ULTRA SERIES FUND
N-30D, 1998-02-19
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Dear Investor:

With the major stock  indexes up 25% to 30% or more,  and long term bond indexes
up 10% to 15%,  1997 was another truly  exceptional  year for investors in U. S.
securities.  And, as you will see in the  following  pages of this  report,  the
Ultra Series Funds participated nicely in these very favorable markets.

It was also an exceptional  year for U. S. investors  exposed to emerging market
stocks,  which lost 35% on average in the non-Japan  Pacific Basin  markets,  or
even to Asian bonds, which returned negative 3% on average in 1997.

All this has been very  unsettling for U. S.  investors,  making it increasingly
difficult  to not "fold their hand,  but to stay in the game." What might the U.
S. investing game provide in 1998?

The only  certainty  is more  volatility.  But,  we  should  also see  continued
resilience. And we just might see the economy play a wild card that could change
the game significantly.

Although  most of Wall  Street  and the  financial  media  are  focusing  on the
increasing  uncertainty of worldwide  economic  growth rates and U. S. corporate
earnings levels,  the financial  markets may be more impacted in 1998 by another
factor  -- a change  to a new stage of the  inflation  cycle.  After 17 years of
slowing inflation in this country, it was approaching zero. Most forecasters had
been  expecting  a bounce  back to modestly  higher  inflation  rates due to our
continuing economic strength amid increasingly strained resources,  fueled by an
expanding money supply.

The Asian problems changed that expectation.  The bursting of the Asian economic
bubble suddenly dashed both the hopes of continued  strong U. S. economic growth
and the fears of rekindling U. S.  inflation.  Although we concur that the Asian
problems  should  have a  moderating  effect  on the  level  of U.  S.  economic
activity,  we think the impact will be modest. The more significant impact could
well be on our inflation rates.

The economic  troubles in Asia hasten the "exporting of deflation" to the United
States.  As prices on Asian  manufactured  goods  plummet,  pricing and currency
pressures  spread  world  wide.  This  could  well  lead to a dip  into  overall
deflation -- actual declines in overall price levels -- in the United States.

This  deflationary  situation  could  actually aid key segments of the amazingly
resilient U. S. economy,  leading to expanding  domestic and European  sales and
sustained profit margins due to lower manufacturing costs. The relative fortunes
of U. S. companies would show increasing  divergence,  however,  as some benefit
from lower  costs and others  suffer  from  shrinking  pricing  power and higher
costs.

U.S.  bonds and most stocks  would do quite well in this "mixed  overall  growth
with modest deflation"  environment.  And,  investors  worldwide would recognize
even more  than in the past  that the U. S.  offers  the  strongest  investments
available.  This  buying  interest,  on top of that of our own baby  boomers and
Gen-Xers,  could add another few  percentage  points to 1998's  returns on U. S.
securities.  The result: A  never-seen-before  fourth consecutive year of double
digit returns.

There  are  other  possibilities,  of  course.  Situations  in  which we stay in
disinflation,  or soon return to modest inflation, have occurred much more often
in our nation's  history.  And, the possibility of a broadening  recession still
lingers, which would hurt most stocks and low-quality bonds.

At times like this, it is especially  important  that  investors  employ all the
techniques available to assure good long term results. Be sure your expectations
are rational as to volatility  and long term returns.  Be sure your target asset
allocation reflects your current situation,  and be sure to maintain that target
allocation  by  at  least  annually   reallocating   investments  from  recently
outperforming areas to lagging categories.  And finally, be sure to "spread your
bets" by using  diversified  investments  like the Ultra Series Funds.  Narrowly
focused  mutual funds and large  concentrations  of specific  securities  can be
harmful to a portfolio  in any market.  They can be  particularly  hazardous  at
potential turning points like we are seeing in 1998.

We greatly  appreciate the opportunity to work along side you and your financial
management  professional in pursuing the fulfillment of your long term financial
goals.

Sincerely,

/s/ Lawrence R. Halverson

Lawrence R. Halverson, CFA
Senior Vice President
<PAGE>


              CAPITAL APPRECIATION STOCK FUND OF ULTRA SERIES FUND
               COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT

At this place, the shareholder report shows a graphic  representation of how the
Capital  Appreciation  Stock Fund  compared  to Several  indexes.  Ten  thousand
invested  on the  inception  date of January 3, 1994,  would have the  following
value as of December  31, 1997.  

     Capital Appreciation Stock Fund1 .................$22,027
     S&P 500 Stock Index ...............................22,840
     Lipper Average2 ...................................18,561
     Consumer Price Index ..............................11,071

The scale on this chart is different  from the scale on the other charts in this
report because the fund's inception date is January 3, 1994.

- --------------------------------------------------------------------------------
               Average Annual Total Return Through December 31, 1997
- --------------------------------------------------------------------------------
- ----------------------------------- ------------ ------------ ------------------
                                        One         Five       Since Inception
                                        Year        Years          of Fund
- ----------------------------------- ------------ ------------ ------------------
- ----------------------------------- ------------ ------------ ------------------
Capital Appreciation Stock Fund3        31.57%         N/A           21.83%
S&P 500 Stock Index                     33.35%         N/A           21.79%
Lipper Average2                         21.45%         N/A           22.89%
Consumer Price Index                     1.90%         N/A            3.45%
- ----------------------------------- ------------ ------------ ------------------

                                                            
TEN LARGEST HOLDINGS (% of Portfolio)
Owens Illinois, Inc.............. 3.8%    Wang Laboratories, Inc....... 2.6%
U.S. West Media Group............ 3.5%    Safeway, Inc................. 2.5%
EMC Corp......................... 3.1%    Mutual Risk Management Ltd... 2.4%
Airtouch Communications, Inc..... 3.1%    Interim Services, Inc........ 2.3%
Travelers Group, Inc............. 3.1%    Cox Communications, Inc...... 2.2%

At this place,  the shareholder  report contains a pie chart showing a portfolio
mix of 3.2% in foreign investments, 4.6% in short-term investments, and 92.2%
in common stocks.

1    Capital  Appreciation  Stock Fund returns on the graph are from  inception,
     January 3, 1994.

2    Lipper  Performance  Summary Average for Capital  Appreciation  Stock Funds
     represents the average  annual total return of all the  underlying  Capital
     Appreciation  Stock Funds in Lipper Analytical  Services Variable Insurance
     Products Performance Analysis Service.

3    Fund  returns are  calculated  after mutual fund level  expenses  have been
     subtracted,  as described in the prospectus.  Market indexes are not actual
     investment alternatives; the returns shown reflect just the income from and
     changes  in value of the  securities  in the index and do not  reflect  any
     deduction for the transaction costs, bid/asked spreads,  management fees or
     operating  expenses that would be incurred in an actual  indexed or managed
     fund.

Figures for more than one year reflect a steady  compounded rate. Actual returns
fluctuated  year  by  year.   Because  principal  value  and  investment  return
fluctuate,  there may be a gain or loss on withdrawal.  Past  performance is not
predictive of future results. This material must be preceded or accompanied by a
current prospectus. Current prospectuses are mailed to existing policyholders.
<PAGE>


                   Management's Discussion of 1997 Performance
                         Capital Appreciation Stock Fund

Investment  Objective:  Seeks a high  level of  long-term  growth of  capital by
investing in common stocks,  including those of smaller  companies and companies
undergoing significant change.

Management's  Discussion:  The U.S. stock market turned in its third consecutive
year of 20%+ gains, led by large capitalization stocks. The Capital Appreciation
Stock  Fund's  investment  approach  of staying  invested in  reasonably  valued
companies  across the small,  middle and large  capitalization  segments  of the
equity market caused the Fund's return to  significantly  outperform the average
of funds with the same investment objective. It also significantly  outperformed
the small  capitalization  indexes and  performed  generally in line with middle
capitalization  indexes,  but slightly  lagged the pure "big cap" market indexes
such as the S&P 500:

    USF Capital Appreciation Stock Fund                                    31.6%

    Lipper Average of Capital Appreciation Funds                           21.5%

    Russell 2000 Index (Small capitalization stocks)                       22.2%
    Standard & Poor's Mid Cap 400 Index (Middle capitalization stocks)     32.2%
    Russell 1000 Index (Large capitalization stocks)                       32.4%
    Standard & Poor's 500 Index (Large capitalization stocks)              33.4%

Results in 1997 benefited from strong  performance in the cable TV stocks,  with
exceptional  returns generated by Cox  Communications and U.S. West Media Group.
Investor interest in the cable group increased dramatically as the companies saw
early success launching new products such as high-speed cable modems and digital
set-top   boxes.   The  Fund  also  benefited  from  a  strong  showing  in  the
communications services sector.  Portfolio holdings in this area gained over 60%
during the year,  led by a 66% gain in Telefonos de Mexico ADRs and a 64% return
from  Airtouch   Communications.   Many  stocks  within  this  sector   appeared
attractively valued during 1997, and we have maintained an overweighted position
in our portfolios. In fact, both Airtouch Communications and Telefonos de Mexico
ADRs  have  been  among the  Fund's  ten  largest  holdings.  After  the  strong
performance  of this group in 1997, we have been taking profits and are reducing
our exposure to this sector. Other strong performers in our Capital Appreciation
Fund include  Owens-Illinois,  a manufacturer of packaging products, and Safeway
Stores, a supermarket operator.

Two  negative  influences  on  performance  during  1997 were our  underweighted
position in the financial sector and the  underperformance  of our capital goods
stocks.  Financial  stocks were among the best  performing  groups in the market
last year,  gaining over 60%. Our  underweighting in this area modestly tempered
our portfolio performance. Our capital goods stocks significantly underperformed
that sector of the index. Much of the negative impact was due to our position in
Waste Management, a restructuring story which suffered a setback as it continued
to struggle with earnings and management transition issues. An additional factor
which had a negative  impact on Fund results was our slightly larger than normal
cash position. While we do not try to "time the market" by actively raising cash
during periods of strong market  performance,  cash levels occasionally build to
levels beyond what is generally needed for liquidity reasons.  This reflects the
increased  difficulty  in finding  stocks  that meet our  valuation  and quality
criteria when overall valuation levels are at the high-end of historical ranges.
While this cash build is temporary, it does have the effect of dampening overall
portfolio returns during strong markets like we had during 1997.

We  believe  that the  health  care and  consumer  staples  sectors  offer  many
attractive  investment  opportunities in today's market.  We are overweighted in
these  sectors  in the  Capital  Appreciation  Fund  relative  to the  S&P  500.
Conversely,  we are underweighted in the consumer cyclical and utilities sectors
as we believe that most of the stocks within those sectors are fairly valued, if
not over-valued.  Such differences from the S&P do not represent broad judgments
about the relative  outlooks  for the various  sectors,  but merely  reflect the
types of stocks that we are finding most attractive.  We let our "stock picking"
dictate the exposures of the portfolios,  but only within  reasonable  limits to
ensure that our portfolios remain well diversified across all sectors. After the
recent strong performance of the larger  capitalization  tiers of the market, we
are  also  finding  that  many  mid-  and  small-capitalization   stocks  appear
relatively more attractive. As a result, we have been increasing our exposure to
lower market capitalization tiers.

Overall, 1997 proved to be another stellar year for the U.S. stock market. After
three consecutive years of over-20% returns, it seems unrealistic to expect this
pace to  continue.  However,  we are  still  able to  find  attractively  valued
investment  opportunities  in domestic  stocks,  and we believe  that  long-term
investors will benefit from investing in common  stocks,  particularly  those of
the type we include in the Capital Appreciation Stock Fund.

Annette E. Hellmer, CFA   Daniel E. Julie, CFA, CPA   Lawrence R. Halverson, CFA
Investment Officer        Investment Officer          Senior Vice President
CIMCO Inc.                CIMCO Inc.                  CIMCO Inc.
<PAGE>


                GROWTH AND INCOME STOCK FUND OF ULTRA SERIES FUND
               COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT

At this place, the shareholder report shows a graphic  representation of how the
Growth and Income Stock Fund compared to several  indexes.  Ten thousand dollars
invested  on the  inception  date of January 3, 1985,  would have the  following
value as of December 31, 1997.

     Growth and Income Stock Fund  ....................$46,887
     S&P 500 Stock Index ...............................52,448
     Lipper Average1 ...................................44,154
     Consumer Price Index ..............................13,989


- --------------------------------------------------------------------------------
             Average Annual Total Return Through December 31, 1997
- --------------------------------------------------------------------------------
- ---------------------------------   -----------  ------------  ------------
                                     One Year     Five Years    Ten Years
- ---------------------------------   -----------  ------------  ------------
- ---------------------------------   -----------  ------------  ------------  
Growth and Income  Stock  Fund2        31.42%      19.51%        16.71% 
S&P 500 Stock Index                    33.35%      20.23%        18.04%  
Lipper  Average1                       27.20%      17.35%        16.01%    
Consumer Price Index                    1.90%       2.60%         3.41%
- ---------------------------------   -----------  ------------  ------------

TEN LARGEST HOLDINGS (% of Portfolio)
Int'l Business Machines Corp. ... 2.9%    EMC Corp. ....................... 2.6%
Allstate Corporation............. 2.8%    The Dow Chemical Company ........ 2.6%
Bristol-Myers Squibb Co.......... 2.7%    American Home Products Corp. .... 2.5%
Nabisco-Holdings ................ 2.7%    Wal-Mart Stores, Inc............. 2.4%
U.S. West Media Group............ 2.7%    Aetna Life & Casualty Co. ....... 2.3%

At this place,  the shareholder  report contains a pie chart showing a portfolio
mix of 2.8% in  foreign  stocks,  4.9% in  short-term  investments,  and 92.3 in
common stocks.

1    The Lipper  Performance  Summary  Average for Growth and Income Stock Funds
     represents the average annual total return of all the underlying Growth and
     Income  Stock  Funds  in  Lipper  Analytical  Services  Variable  Insurance
     Products Performance Analysis Service.

2    Fund  returns are  calculated  after mutual fund level  expenses  have been
     subtracted,  as described in the prospectus.  Market indexes are not actual
     investment alternatives; the returns shown reflect just the income from and
     changes  in value of the  securities  in the index and do not  reflect  any
     deduction for the transaction costs, bid/asked spreads,  management fees or
     operating  expenses that would be incurred in an actual  indexed or managed
     fund.

Figures for more than one year reflect a steady  compounded rate. Actual returns
fluctuated  year  by  year.   Because  principal  value  and  investment  return
fluctuate,  there may be a gain or loss on withdrawal.  Past  performance is not
predictive of future results. This material must be preceded or accompanied by a
current prospectus. Current prospectuses are mailed to existing policyholders.
<PAGE>


                   Management's Discussion of 1997 Performance
                          Growth and Income Stock Fund

Investment  Objective:  Seeks  long term  growth of  capital,  with  income as a
secondary  consideration,  by investing  primarily in common stocks of companies
with financial and market strengths and long term records of performance.

Management's  Discussion:  The U.S.  stock  market's  unprecedented  bull market
continued  through 1997.  But, it isn't the strong  returns that most  investors
will remember, it will be the now infamous phrases: Irrational Exuberance, Asian
Contagion, and Deflation. The market struggled through the volatility created by
these  concerns,   however,  with  the  advance  led  primarily  by  large-  and
mid-capitalization  stocks.  The  Growth  and  Income  Stock  Fund's  investment
philosophy keeps the fund invested in reasonably  valued stocks of mostly larger
companies  across all major economic  sectors.  The fund targets  companies that
have strong competitive positions, attractive relative valuations, and catalysts
to  drive  positive  fundamental  changes.  This  approach  allowed  the fund to
significantly   outperform  the  average  of  similar  funds  in  1997,  and  to
approximate the returns of representative market indexes:

      USF Growth and Income Stock Fund                                  31.4%

      Lipper Average of Growth and Income Funds                         27.2%

      Russell 2000 Index (Small capitalization stocks)                  22.2%
      Standard & Poor's 400 Index (Middle capitalization stocks)        32.2%
      Russell 1000 Index (Large capitalization stocks)                  32.4%
      Standard & Poor's 500 Index (Large capitalization stocks)         33.4%

The  Fund's  performance  relative  to market  indexes  benefited  from a modest
overweighted  position and strong  performance  in the  technology  sector.  The
Fund's technology holdings returned 44.6% during 1997 as compared to a return of
25.2% for the S&P 500's  technology  sector.  A significant  contributor to this
performance was EMC Corp. As the leader in enterprise  storage  systems,  it was
able to  capitalize  on the  increasing  need for storage in networked  systems.
Other technology  performance  contributors were Computer Associates,  a leading
software solutions company, and Texas Instruments, a leader in the production of
digital signal processors.

The Fund also benefited from a solid  performance  from the finance sector which
returned  60.6% during 1997 as compared to the S&P's  finance  sector  return of
48.9%.  This  relative  performance  was  offset  slightly  by an  underweighted
position in the sector during the period.  A key  contributor  here was Allstate
Corp,  which  delivered  strong  earnings  growth  due  to  reduced  catastrophe
exposures and improved loss ratios in the auto business. The bull market was the
driving  force  behind  the  strong  results  posted by Morgan  Dean  Witter and
Salomon,  Inc. Other strong contributors to the Fund's performance  included the
cable stocks.  The investment  market had shunned this group as satellite TV was
coming on stream,  but the underlying  values of the companies were rediscovered
during  1997,  allowing  US West Media  Group and Cox  Communications  stocks to
provide  returns in excess of 55%.  Also, the wireless  communications  industry
continued  its  tremendous  growth in 1997.  Airtouch  Communications  was a key
holding of the Fund and returned 64% for the period.

The  weakest  performing  sectors  for the Fund in 1997 were  capital  goods and
healthcare.  A key capital goods holding for the Fund was Waste Management Inc.,
a restructuring  story which suffered a setback as it continued to struggle with
earnings and management transition issues. The slightly overweighted  healthcare
sector underperformed because several of the drug stocks that drove the market's
performance  were not  viable  candidates  for the  fund  due to  their  already
inflated  valuations.  The  healthcare  sector was also harmed by medical  costs
increasing faster than revenues, thereby pressuring margins in the HMO sector.

The Growth and Income Fund enters 1998 with overweighted  positions  relative to
the S&P 500 in the consumer  staples,  healthcare  and technology  sectors.  The
consumer  cyclical,  finance  and  capital  goods  sectors  carry  underweighted
positions  with the remaining  sectors at  approximately  market  weights.  Such
differences from the S&P do not represent  overall  judgments about the relative
outlooks for the various sectors, but merely reflect the types of stocks that we
are finding most attractive. We let our "stock picking" dictate the exposures of
the portfolios,  but only within reasonable limits to ensure that our portfolios
remain well diversified across all sectors.

The strong  performance  of the  financial  markets over the past several  years
should  not be  extrapolated  indefinitely  into the  future.  But,  we  caution
investors  against trying to time a market  setback.  Although the world markets
have been extremely volatile,  the broad global economic  fundamentals are still
quite conducive to moderate economic  expansion.  Long term investors should not
let volatility or next year's batch of infamous  phrases disrupt their long term
asset accumulation programs, but should maintain their diversified portfolios of
reasonably  priced,  quality  securities  like  those we seek to  provide in the
Growth and Income Stock Fund.

Annette E. Hellmer, CFA   Daniel E. Julie, CFA, CPA   Lawrence R. Halverson, CFA
Investment Officer        Investment Officer          Senior Vice President
CIMCO Inc.                CIMCO Inc.                  CIMCO Inc.
<PAGE>


                       BALANCED FUND OF ULTRA SERIES FUND
               COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT

At this place, the shareholder report shows a graphic  representation of how the
Balanced  Fund  compared  to  several  indexes.  Ten  thousand  invested  on the
inception date of January 3, 1985 would have the following  value as of December
31, 1997.

     Balanced Fund ....................................$29,934
     Synthetic Index1 ..................................32,039
     Lipper Average2 ...................................31,345
     Consumer Price Index ..............................13,989


- --------------------------------------------------------------------------------
             Average Annual Total Return Through December 31, 1997
- --------------------------------------------------------------------------------
- ---------------------------------   -----------  ------------  ------------
                                     One Year     Five Years    Ten Years
- ---------------------------------   -----------  ------------  ------------
- ---------------------------------   -----------  ------------  ------------  
Balanced Fund3                         16.87%        11.73%       11.58%  
Synthetic Index                        18.57%        12.41%       12.35% 
Lipper  Average2                       18.75%        12.60%       12.10% 
Consumer Price Index                    1.90%         2.60%        3.41%  
- ---------------------------------   -----------  ------------  ------------

At this place,  the shareholder  report contains a pie chart showing a portfolio
mix of 0.2% Non-U.S.  corporate bonds, 3.8% Non-U.S.  government & agency bonds,
6.9% short-term investments, 17.1% U.S. corporate bonds, 24.2 % U.S. goverment &
agency bonds, and 47.8% common stocks.

1    The  Synthetic  Index  represents  the average  annual  total  returns of a
     portfolio which was annually readjusted to 45% Standard and Poor's 500, 40%
     Lehman  Intermediate  Government/Corporate  Index,  and 15% 90-Day Treasury
     Bills.

2    The Lipper  Performance  Summary Average for Balanced Funds  represents the
     average annual total return of all the underlying  Balanced Funds in Lipper
     Analytical  Services  Variable  Insurance  Products   Performance  Analysis
     Service.

3    Fund  returns are  calculated  after mutual fund level  expenses  have been
     subtracted,  as described in the prospectus.  Market indexes are not actual
     investment alternatives; the returns shown reflect just the income from and
     changes  in value of the  securities  in the index and do not  reflect  any
     deduction for the transaction costs, bid/asked spreads,  management fees or
     operating  expenses that would be incurred in an actual  indexed or managed
     fund.

Figures for more than one year reflect a steady  compounded rate. Actual returns
fluctuated  year  by  year.   Because  principal  value  and  investment  return
fluctuate,  there may be a gain or loss on withdrawal.  Past  performance is not
predictive of future results. This material must be preceded or accompanied by a
current prospectus. Current prospectuses are mailed to existing policyholders.
<PAGE>


                   Management's Discussion of 1997 Performance
                                  Balanced Fund

Investment  Objective:  Seeks a high total  return  through the  combination  of
income and capital growth by investing in common stocks of the type owned in the
Growth and Income and Capital  Appreciation Stock Funds, bonds of the type owned
in the Bond Fund and money  market  instruments  of the type  owned in the Money
Market Fund.

Management's  Discussion:  The U.  S.  stock  market  provided  another  year of
exceptional returns in 1997, while erratic but generally declining interest rate
levels allowed bond returns to also modestly  exceed their  long-term  averages.
The  Balanced  Fund's  conservative  portfolio  management  approach  of staying
invested in a diversified portfolio of reasonably valued stocks, bonds and money
market instruments allowed it to advance nicely in 1997, but at a slightly lower
rate than representative market indexes and the average of similar funds:

         USF Balanced Fund                                  16.9%

         Synthetic Index*                                   18.6%

         Lipper Average of Balanced Funds                   18.8%

          *   45%   Standard   &   Poor's   500,    40%   Lehman    Intermediate
          Government/Corporate Index and 15% 90-day U. S. Treasury bills.

The key  operating  factors  causing a difference  between the  Balanced  Fund's
return  and that of the  synthetic  index  were Fund  expenses,  which  averaged
approximately .68% of Fund assets in 1997, and transaction costs. Market indexes
are not actual  investment  funds and do not bear either expenses or transaction
costs.

In addition,  although the markets represented in the synthetic index (described
in the footnote  above) better  represent  the types of securities  owned in the
Balanced  Fund than any other single stock and bond  indexes,  the Balanced Fund
generally invests in some stocks of smaller capitalization  companies than those
represented in the Standard & Poor's 500, and it invests a smaller proportion of
its assets in U. S. Treasury bonds than  represented in the Lehman  Intermediate
Government/Corporate  Index. These differences  typically provide higher returns
to the Fund,  but that was not the case in 1997's  "large cap" stock  market and
"flight  to  quality"  bond  market  environment.  Management's  discussions  of
performance of the Bond, Growth and Income Stock and Capital  Appreciation Stock
Funds provide descriptions of the various portfolio management  activities which
were  employed in these funds as well as in the Balanced  Fund,  explaining  the
major sources of positive and negative variances in Fund performance relative to
the indexes.

The  difference  between the Balanced  Fund's 1997  performance  and that of the
average  balanced fund in the Lipper universe was primarily  attributable to the
long-standing   difference  in  the  mix  of  stocks,  bonds  and  money  market
investments.  The average  balanced fund has a greater  proportion of its assets
invested  in  stocks  and less in bonds and  money  markets  than does the Ultra
Series Balanced Fund. This reflects the more aggressive  management style of the
average fund, or the more  conservative  structure of the Ultra Series  Balanced
Fund.  This  difference  has resulted in somewhat  lower total returns in recent
years  for the  Balanced  Fund,  but it has also  very  favorably  impacted  the
Balanced  Fund's  stability of returns,  a common  measure of  investment  risk.
According to Morningstar, the Balanced Fund's historic risk level is only 47% of
that of the average balanced fund, putting it among the most conservative 10% of
such  funds.  This  substantial  reduction  in risk makes the  Balanced  Fund an
attractive  investment  for many  conservative  investors.  More  risk  tolerant
Balanced Fund investors may want to direct a portion of their investments to one
or more of the Ultra  Series stock  funds.  This blend may well provide  greater
stability  as well as higher  returns  for the overall  portfolio  than might be
obtained from the average balanced fund.

With the exceptional stock market returns and slightly above average bond market
returns,  1997 was another year of well above average overall  investment market
performance.  One  should  not  expect  returns  of this  magnitude  to  persist
indefinitely.   Nor,   however,   should  investors   abandon   long-term  asset
accumulation  programs in expectation of a marker  setback.  We see no reason to
expect a negative  change in the long-term  performance of stocks and bonds and,
therefore, see more risk to the long-term investor in "sitting on the sidelines"
than in  "remaining  in the game" by  accumulating  a  diversified  portfolio of
quality,  reasonably  priced  securities  like  those we seek to  provide in the
Balanced Fund.

Annette E. Hellmer, CFA   Joe Gogola, CFA             Lawrence R. Halverson, CFA
Investment Officer        Senior Investment Officer   Senior Vice President
CIMCO Inc.                CIMCO Inc.                  CIMCO Inc.
<PAGE>


                         BOND FUND OF ULTRA SERIES FUND
               COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT


At this place, the shareholder report shows a graphic  representation of how the
Bond Fund compared to several  indexes.  Ten thousand  invested on the inception
date of January 3, 1985, would have the following value as of December 31, 1997.

     Bond Fund  .......................................$21,497
     Lehman Brothers Intermediate
          Government/Corporate Bond Index...............22,275
     Lipper Average1 ...................................19,124
     Consumer Price Index ..............................13,989

- --------------------------------------------------------------------------------
               Average Annual Total Return Through December 31, 1997
- --------------------------------------------------------------------------------
- ----------------------------------- ------------ ------------ ------------------
                                        One         Five             Ten
                                        Year        Years           Years
- ----------------------------------- ------------ ------------ ----------------
- ----------------------------------- ------------ ------------ ----------------

Bond Fund2                              7.45%         6.30%          7.95%
Lehman Brothers Intermediate
   Govt./Corporate Bond Index           7.87%         6.66%          8.34%
Lipper Average1                         6.32%         5.27%          6.70%
Consumer Price Index                    1.90%         2.60%          3.41%
- ----------------------------------- ------------ ------------ ----------------

At this place,  the shareholder  report contains a pie chart showing a portfolio
mix of 3.3%  Non-U.S.  corporate  bonds,  6.0%  Non-U.S.  government & agency
bonds, 7.7% short-term  investments,  26.5% U.S.  government & agency bonds, and
56.5% U.S. corporate bonds.

1    The Lipper Performance  Summary average for  Short/Intermediate  Investment
     Grade  Funds  represents  the  average  annual  total  return  of  all  the
     underlying  Short/Intermediate  Investment Grade Funds in Lipper Analytical
     Services Variable Insurance Products Performance Analysis Service.

2    Fund  returns are  calculated  after mutual fund level  expenses  have been
     subtracted,  as described in the prospectus.  Market indexes are not actual
     investment alternatives; the returns shown reflect just the income from and
     changes  in value of the  securities  in the index and do not  reflect  any
     deduction for the transaction costs, bid/asked spreads,  management fees or
     operating  expenses that would be incurred in an actual  indexed or managed
     fund.

Figures for more than one year reflect a steady  compounded rate. Actual returns
fluctuated  year  by  year.   Because  principal  value  and  investment  return
fluctuate,  there may be a gain or loss on withdrawal.  Past  performance is not
predictive of future results. This material must be preceded or accompanied by a
current prospectus. Current prospectuses are mailed to existing policyholders.
<PAGE>


                   Management's Discussion of 1997 Performance
                                    Bond Fund

Investment Objective:  Seeks a high level of current income, consistent with the
prudent  limitation  of  investment  risk,  through  investment in a diversified
portfolio of fixed income securities with maturities of up to 30 years. The fund
emphasizes intermediate-term securities.

Management's  Discussion:  The bond market reflected an erratic rise and fall in
interest rates through most of the first three  quarters of 1997,  which allowed
bonds to earn their  underlying  coupon  income with  virtually no net change in
bond prices. By mid-September,  however, the Asian economic crisis began to rock
financial markets across the globe. Then, on October 27, it caused the Dow Jones
Industrials stock index to plummet 554 points, the largest single-day point loss
in history.  Other equity markets around the world experienced  similar or worse
shocks.

During this chaotic period,  the U. S. government bond sector  outperformed  all
others as investors  worldwide  sought the safety of the most stable  government
and strongest  economy and currency in the world. U. S. corporate  bonds,  which
provide a yield  advantage  over the higher quality  Treasuries,  only partially
benefited  from this global  "flight to quality."  They did not  experience  the
degree of price gains that Treasuries did,  offsetting their yield advantage and
causing them to underperform Treasuries. The Bond Fund's conservative investment
approach   of   broad    portfolio    diversity    emphasizing    good   quality
intermediate-term,  corporate issues held the Fund's  performance  below that of
similar funds which make greater use of lower quality,  higher  yielding  bonds,
but  generally in line with Lehman  Brothers  Intermediate  Government/Corporate
Index.

     USF Bond Fund                                                        7.5%

     Lipper Average of Short/Intermediate-Term Investment Grade Funds     6.3%

     Lehman Brothers Intermediate Government/Corporate Index              7.9%
     Lehman Brothers Aggregate Index                                      9.7%
     Lehman Brothers Government/Corporate Index                           9.8%

The difference between the Bond Fund's return and that of the intermediate index
reflects  Fund  expenses,  which  averaged  approximately  .58% annually of Fund
assets,  and transaction  costs.  Market indexes are not actual investment funds
and do not incur expenses or transaction costs.

To enhance  the  fund's  interest  income  yield  relative  to the  indexes,  it
generally carries a significantly  smaller  component of government  securities,
and recently  added modest  allocations  to interest only strips,  international
dollar-denominated  bonds, less marketable corporate and asset-backed securities
and below investment  grade issues.  The late-1997 flight to quality resulted in
corporate and  international  bonds  underperforming.  The accompanying  drop in
market  interest rate levels caused  interest only holdings to decline in price,
as expected from such a hedge position,  offsetting their  significantly  higher
current  yield.  The  Fund's  return  lagged  the longer  term  Lehman  Brothers
Aggregate and  Government/Corporate  Indexes due to the Fund's shorter  duration
and significantly smaller exposure to U. S. government securities.

Although recent bond market returns appear modest relative to the  exceptionally
high U. S. stock market  returns,  both the stock and the bond markets  actually
outperformed  their  long-term  averages  in 1997.  We  encourage  investors  to
maintain  realistic  expectations  for long term investment  returns,  and to be
prepared for continued  volatility and occasional  severe market setbacks.  But,
any such setbacks  should be viewed as normal  occurrences,  not something  that
must be avoided for a long-term investment program to succeed. A greater risk to
the investor's future  performance is "sitting on the sidelines" or following an
undiversified  investment  program,  rather  than  continuing  to  accumulate  a
diversified portfolio of quality and value-priced  securities including those of
the type held in Bond Fund.

As 1998 unfolds,  we will continue to seek to provide in the Bond Fund the price
stability  with good returns that  investors have realized in the past. The Fund
will maintain its "A" average quality rating and its intermediate-term portfolio
duration, but as noted above, we are utilizing some new investment categories to
increase the portfolio yield. This effort employs CIMCO's internally  developed,
computer-based  portfolio  optimization  model,  which allows us to  efficiently
evaluate various bond allocations  over multiple  projected  interest rate paths
using  historically  based  covariances and expected rates of return for each of
several categories of bonds. We expect this new tool to be a valuable supplement
to the experience- and knowledge-based judgement we have used over the years and
will continue to use to manage this  conservative  bond  portfolio for long term
investors.

Joseph L. Gogola, CFA                     Lawrence R. Halverson, CFA
Senior Investment Officer                 Senior Vice President
CIMCO Inc.                                CIMCO Inc.
<PAGE>


                     TREASURY 2000 FUND OF ULTRA SERIES FUND
               COMPARISON OF CHANGE IN VALUE OF $10,000 INVESTMENT

At this place, the shareholder report shows a graphic  representation of how the
Treasury 2000 Fund compared to several indexes. Ten thousand dollars invested on
the  inception  date of July 28,  1988,  would  have the  following  value as of
December 31, 1997.

     Treasury 2000 Fund1 ..............................$25,514
     Lipper Average2 ...................................26,381
     Lehman Brothers Intermediate Treasury Bond Index...21,758
     Consumer Price Index ..............................13,989


- --------------------------------------------------------------------------------
               Average Annual Total Return Through December 31, 1997
- --------------------------------------------------------------------------------
- ----------------------------------- ------------ ------------ ------------------
                                        One         Five       Since Inception
                                        Year        Years         of Fund
- ----------------------------------- ------------ ------------ ----------------
- ----------------------------------- ------------ ------------ ----------------
Treasury  2000 Fund3                    6.86%        7.19%          10.36%  
Lehman  Brothers Intermediate  
  Treasury Bond Index                   7.69%        6.38%           8.10% 
Lipper  Average2                        9.58%        8.64%          10.86%
Consumer Price Index                    1.90%        2.60%           3.63%
- ----------------------------------- ------------ ------------ ----------------

1    Treasury 2000 Fund returns on the graph are from inception, July 28, 1988.

2    The Lipper Performance Summary Average for Target Maturity Funds represents
     the average annual total return of all the underlying Target Maturity Funds
     in Lipper  Analytical  Services  Variable  Insurance  Products  Performance
     Analysis  Service.  The  Lipper  Performance  Summary  Average  for  Target
     Maturity Funds covers the period from January 1, 1988 to December 31, 1997.
     This is not  exactly  the same time frame as the  Treasury  2000 Fund which
     began on July 29, 1988.

3    Fund  returns are  calculated  after mutual fund level  expenses  have been
     subtracted,  as described in the prospectus.  Market indexes are not actual
     investment alternatives; the returns shown reflect just the income from and
     changes  in value of the  securities  in the index and do not  reflect  any
     deduction for the transaction costs, bid/asked spreads,  management fees or
     operating  expenses that would be incurred in an actual  indexed or managed
     fund.

Figures for more than one year reflect a steady  compounded rate. Actual returns
fluctuated  year  by  year.   Because  principal  value  and  investment  return
fluctuate,  there may be a gain or loss on withdrawal.  Past  performance is not
predictive of future results. This material must be preceded or accompanied by a
current prospectus. Current prospectuses are mailed to existing policyholders.
<PAGE>


                   Management's Discussion of 1997 Performance
                               Treasury 2000 Fund

Investment  Objective:  Seeks  safety of capital  and a  relatively  predictable
payout upon  Portfolio  Maturity,  primarily by  investing in Stripped  Treasury
Securities.

Management's  Discussion:  The bond market reflected an erratic rise and fall in
interest   rates  through  most  of  the  first  three   quarters  of  1997.  By
mid-September,  however,  the  Asian  economic  crisis  began to rock  financial
markets  across the globe,  leading to a broad  "flight to quality" by investors
worldwide.  This  drove  up the  prices  of the  highest  quality,  most  liquid
securities available, leading to significant out-performance by U. S. government
securities  relative to most other  categories of U. S. and foreign  bonds.  The
Treasury 2000 Fund's  portfolio  approach of remaining  invested  exclusively in
U.S.  Treasury  Strips or similar  coupon  securities  with a  maturity  date of
November 15, 2000 produced a very attractive  return for such  short-term,  high
quality investments:

     USF Treasury 2000 Fund                                      6.9%

     Lipper Average of Target Maturity Funds                     8.7%

     Lehman Intermediate Treasury Bond Index                     7.7%

The Fund's shorter  duration (2.80 versus 3.05 for the Index) during a period of
falling  interest rates reduced the Fund's return relative to that of the index.
Similarly,  the average target maturity fund in the Lipper universe had a longer
duration, producing a somewhat higher return for this peer group average.

Also influencing the Fund return relative to the market index was Fund expenses,
which  amounted to .45% annually of Fund assets.  Market  indexes are not actual
investment funds and do not bear either expenses or transaction costs.

Between now and the November  15, 2000,  maturity  and  distribution  date,  the
Fund's returns will reflect changes in market interest rate levels,  but will be
primarily  impacted by the appreciation of the Fund's  investment  securities to
their face value at maturity.

The  performance  of  financial  assets  like those in the Fund was  slightly in
excess of their long-term averages.  We see no reason why the future performance
of the broad bond market will not be in line with the long-term  average return.
Therefore,  investors should be careful not expect too much of their investments
in the  future,  nor to put  their  portfolios'  future  performance  at risk by
"sitting on the sidelines" or by following an undiversified  investment program.
We  strongly  encourage  all long  term  investors  to  continue  to  accumulate
diversified  portfolios of quality and value-priced  securities  including where
appropriate those of the type in the Treasury 2000 Fund.

Joseph L. Gogola, CFA                   Lawrence R. Halverson, CFA
Senior Investment Officer               Senior Vice President
CIMCO Inc.                              CIMCO Inc.
<PAGE>
<TABLE>
<CAPTION>


                                                                        ULTRA SERIES FUND
                                                              Statement of Assets and Liabilities
                                                                      December 31, 1997


                                                 Capital      Growth and                                    Money       Treasury
                                              Appreciation      Income         Balanced       Bond         Market         2000
Assets:                                        Stock Fund     Stock Fund         Fund         Fund          Fund          Fund
                                               ----------     ----------         ----         ----          ----          ----
<S>                                       <C>            <C>            <C>            <C>            <C>           <C>
Investments in securities, at value,
   (note 2)-see accompanying schedule
   (cost $404,240,049)                      $458,255,162   $         --   $         --   $         --   $        --   $        --
   (cost $461,510,749)                                --    584,882,177             --             --            --            --
   (cost $269,135,520)                                --             --    310,239,939             --            --            --
   (cost $185,177,448)                                --             --             --    185,599,118            --            --
   (cost $41,192,527)                                 --             --             --             --    41,192,527            --
   (cost $1,502,323)                                  --             --             --             --            --     1,701,374
  Receivable for securities sold                 304,594      7,556,707        812,914             --            --            --
  Accrued interest receivable                        240            328      2,152,172      3,302,397             8            --
  Accrued dividends receivable                   393,843      1,152,046        237,397             --            --            --
                                             -----------    -----------    -----------     ----------    ----------    ----------
    Total assets                             458,953,839    593,591,258    313,442,422    188,901,515    41,192,535     1,701,374
                                             -----------    -----------    -----------     ----------    ----------    ----------

Liabilities:
  Payable for securities purchased             2,526,385      3,154,136      3,450,718             --            --            --
  Dividends payable                                   --             --             --             --         5,562            --
  Accrued expenses                               233,219        301,689        187,992         61,947        16,821           697
                                             -----------    -----------    -----------    -----------    ----------    ----------
    Total liabilities                          2,759,604      3,455,825      3,638,710         61,947        22,383           697
                                             -----------    -----------    -----------    -----------    ----------    ----------
Net assets applicable to outstanding
capital stock                               $456,194,235   $590,135,433   $309,803,712   $188,839,568   $41,170,152    $1,700,677
                                             ===========    ===========    ===========    ===========    ==========    ==========

Represented by:
  Capital stock, par value $.01                 $242,004       $216,928       $181,994       $179,093      $411,702        $1,841
  Additional paid-in capital                 401,977,352    466,547,077    268,464,496    188,176,466    40,758,450     1,499,785
  Undistributed net investment income                 --             --         49,986         62,339            --            --
  Undistributed net realized gain (loss)
   on investments                                (40,234)            --          2,817             --            --            --
  Unrealized appreciation (depreciation)
   on investments                             54,015,113    123,371,428     41,104,419        421,670            --       199,051
                                             -----------    -----------    -----------    -----------    ----------    ----------

Total net assets - representing net assets
applicable to outstanding capital stock     $456,194,235   $590,135,433   $309,803,712   $188,839,568   $41,170,152    $1,700,677
                                             ===========    ===========    ===========    ===========    ==========    ==========
Number of Class Z Shares issued and
outstanding (note 5)                          24,200,359     21,692,803     18,199,350     17,909,312    41,170,152       184,138
                                             ===========    ===========    ===========    ===========    ==========    ==========
Net asset value per share of outstanding
capital stock (note 2)                            $18.85         $27.20         $17.02         $10.54         $1.00         $9.24
                                             ===========    ===========    ===========    ===========    ==========    ==========

See accompanying notes to financial statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                   CAPITAL APPRECIATION STOCK FUND OF ULTRA SERIES FUND
                                                                 Investments in Securities
                                                                     December 31, 1997


CAPITAL APPRECIATION STOCK                         % Net        Quality    Annualized     Maturity            Par
FUND INVESTMENTS:                                 Assets        Rating*       Yield         Date            Amount            Value
                                                  ------        -------       -----         ----            ------            -----
<S>                                            <C>        <C>           <C>          <C>              <C>            <C>
Short-Term Investments:
Commercial Paper/Savings:                          5.1%
  Anheuser Busch Companies                                      A-1/P-1       5.85%      Jan 08, 1998    $3,000,000       $2,996,646
  Coca-Cola Company                                            A-1+/P-1       5.83%      Jan 13, 1998     3,000,000        2,994,280
  Consolidated Natural Gas                                     A-1+/P-1       6.30%      Jan 07, 1998     2,000,000        1,997,933
  Ford Motor Credit Corporation                                 A-1/P-1       5.73%      Jan 05, 1998     2,000,000        1,998,758
  Ford Motor Credit Corporation                                 A-1/P-1       6.06%      Jan 06, 1998     3,500,000        3,497,098
  General Electric Capital Corporation                         A-1+/P-1       5.98%      Jan 15, 1998     2,000,000        1,995,434
  Merrily Lynch Capital Markets                                A-1+/P-1       5.97%      Jan 20, 1998     3,000,000        2,990,737
  Merrily Lynch Capital Markets                                A-1+/P-1       5.97%      Jan 12, 1998     1,000,000          998,106
  Merrily Lynch Capital Markets                                A-1+/P-1       5.68%      Jan 02, 1998     2,000,000        1,999,667
  State Street Bank & Trust                                                   5.25%                       1,644,775        1,644,775
                                                                                                                          ----------

     TOTAL SHORT-TERM INVESTMENTS,
     AT COST                                                                                                             $23,113,434
                                                                                                                          ----------

                                                   % Net
Long-Term Investments:                            Assets                                                    Shares            Value
Common Stocks:                                     95.4%

Foreign Issues:                                    3.2%
  Glaxo Wellcome PLC - ADR                                                                                  101,800       $4,873,675
  Telefonos deMexico SP ADR - Cl L                                                                          174,000        9,754,875
                                                                                                                           ---------
     Foreign Issues total                                                                                                 14,628,550

Building Materials:                                1.9%
  Raychem Corporation                                                                                       195,500        8,418,719

Forest Products/Paper:                             2.3%
  Georgia-Pacific Corporation                                                                                72,100        4,380,075
  Georgia-Pacific (Timber Grp)***                                                                            55,500        1,259,156
  Willamette Industries Inc.                                                                                155,900        5,018,031

                                                                                                                           ---------
     Forest Products/Paper total                                                                                          10,657,262

Insurance:                                         6.9%
  Aetna Inc.                                                                                                137,400        9,695,288
  Allstate Corporation                                                                                       85,882        7,804,526
  Travelers Group, Inc.                                                                                     258,999       13,953,571

                                                                                                                           ---------
     Insurance total                                                                                                      31,453,385

Banks:                                             2.3%
  Banc One Corporation                                                                                      101,200        5,496,425
  Bankers Trust New York Corporation                                                                         45,200        5,082,175

                                                                                                                           ---------
     Banks total                                                                                                          10,578,600

Investment Banking/Brokerage:                      7.1%
  A. G. Edwards, Inc.                                                                                       214,300        8,518,425
  Everest Reinsurance Holdings, Inc.                                                                        179,650        7,410,563
  Morgan Stanley, Dean Witter, Discover and Co.                                                              91,200        5,392,200
  Mutual Risk Management Ltd.                                                                               366,464       10,971,016

                                                                                                                           ---------
     Investment Banking/Brokerage total                                                                                   32,292,204

Drugs/Health Care:                                 6.8%
  ALZA Corporaton                                                                                           153,900        4,895,944
  Biogen, Inc.***                                                                                            72,200        2,626,275
  Bristol-Myers Squibb Company                                                                               54,800        5,185,450
  Centocor, Inc.***                                                                                         114,400        3,803,800
  Crescendo Pharmaceuticals Corporation***                                                                    6,260           72,381
  MedPartners, Inc.***                                                                                      175,659        3,930,370
  Pharmacia & Upjohn, Inc.                                                                                  152,000        5,567,000
  United Healthcare Corporation                                                                              99,400        4,938,938

                                                                                                                           ---------
     Drugs/Health Care total                                                                                              31,020,158
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                  CAPITAL APPRECIATION STOCK FUND OF ULTRA SERIES FUND
                                                          Investments in Securities (Continued)
                                                                    December 31, 1997


CAPITAL APPRECIATION STOCK                         % Net
FUND INVESTMENTS, CONTINUED:                      Assets                                                    Shares            Value
<S>                                            <C>                                                       <C>            <C>   
Hospital Management/Supplies:                      0.8%
  Columbia/HCA Healthcare Corporation                                                                       123,700       $3,664,613
                                                                                                                           ---------

Retail - Discount:                                 1.7%
  The TJX Companies, Inc.                                                                                   134,100        4,609,688
  Wal-Mart Stores, Inc.                                                                                      78,700        3,103,731
                                                                                                                           ---------
     Retail-Discount total                                                                                                 7,713,419

Retail - Department:                               2.0%
  Dayton Hudson Corporation                                                                                 136,900        9,240,750
                                                                                                                           ---------

Retail - Drug:                                     1.9%
  Rite Aid Corporation                                                                                      145,800        8,556,638
                                                                                                                           ---------

Retail-Grocery:                                    2.6%
  Safeway Inc.***                                                                                           183,800       11,625,350
                                                                                                                           ---------

Media:                                             3.2%
  Cognizant Corporation                                                                                     121,300        5,405,431
  PRIMEDIA Inc.***                                                                                          720,600        9,097,575
                                                                                                                           ---------
     Media total                                                                                                          14,503,006

Foods - Products & Service:                        5.2%
  General Mills, Inc.                                                                                        56,050        4,014,581
  Nabisco Holdings Corporation - Class A                                                                    194,100        9,401,719
  Sara Lee Corporation                                                                                       74,400        4,189,650
  Tyson Foods, Inc. - Class A                                                                               303,800        6,227,900
                                                                                                                           ---------
     Foods - Products & Service total                                                                                     23,833,850

Apparel/Textile:                                   1.1%
  Nine West Group, Inc.***                                                                                  188,400        4,886,625
                                                                                                                           ---------

Office Equipment/Computers:                       10.0%
  3Com Corporation***                                                                                       154,900        5,411,819
  EMC Corporation***                                                                                        519,300       14,248,294
  Gateway 2000, Inc.***                                                                                     159,700        5,210,213
  International Business Machines Corporation                                                                59,350        6,205,784
  Seagate Technology, Inc.***                                                                               151,700       2,920,225
  Wang Laboratories, Inc.***                                                                                526,250      11,643,281
                                                                                                                           ---------
     Office Equipment/Computers total                                                                                     45,639,616

Electronics-Semiconductors:                        1.9%
  Dallas Semiconductor Corporation                                                                          142,700        5,815,025
  Micron Technology, Inc.***                                                                                104,450        2,715,700
                                                                                                                           ---------
     Electronics-Semiconductors total                                                                                      8,530,725

Electronics:                                       1.2%
  Texas Instruments Incorporated                                                                            124,800        5,616,000
                                                                                                                           ---------

Pollution Control:                                 1.1%
  Waste Management, Inc.                                                                                    174,600        4,801,500
                                                                                                                           ---------

Oil/Oil Service:                                   6.2%
  Occidental Petroleum Corporation                                                                          296,550        8,692,622
  Unocal Corporation                                                                                        172,050        6,677,691
  USX-Marathon Group                                                                                        277,200        9,355,500
  The Williams Companies, Inc.                                                                              123,400        3,501,475
                                                                                                                           ---------
     Oil/Oil Service total                                                                                                28,227,288

Containers:                                        3.8%
  Owens-Illinois, Inc.***                                                                                   455,600       17,284,325
                                                                                                                          ----------

</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                  CAPITAL APPRECIATION STOCK FUND OF ULTRA SERIES FUND
                                                          Investments in Securities (Continued)
                                                                    December 31, 1997


CAPITAL APPRECIATION STOCK                         % Net
FUND INVESTMENTS, CONTINUED:                      Assets                                                     Shares           Value
<S>                                            <C>                                                       <C>           <C>     
Chemicals:                                         3.5%
  The Dow Chemical Company                                                                                   48,000       $4,872,000
  Kerr-Mcgee Corporation                                                                                      77,300       4,894,056
  Praxair Inc                                                                                                134,500       6,052,500
                                                                                                                           ---------
     Chemicals total                                                                                                      15,818,556

Transportation:                                    2.6%
  Delta Air Lines, Inc.                                                                                       31,350       3,730,650
  Federal Express Corporation***                                                                              75,800       4,628,538
  Midwest Express Holdings, Inc.***                                                                           92,450       3,588,215
                                                                                                                           ---------
     Transportation total                                                                                                 11,947,403

Telecommunications:                                8.8%
  AirTouch Communications, Inc.***                                                                           343,550      14,278,796
  Cox Communications, Inc.***                                                                                246,800       9,887,425
  U.S. WEST Media Group***                                                                                   546,500      15,780,188
                                                                                                                           ---------
     Telecommunications total                                                                                             39,946,409

Utilities-Telephone:                               2.2%
  Ameritech Corporation                                                                                       61,400       4,942,700
  Bell Atlantic Corporation                                                                                   54,650       4,973,150
                                                                                                                           ---------
     Utilities-Telephone total                                                                                             9,915,850

Utilities-Electric:                                0.7%
  PG& E Corporation                                                                                          108,450       3,300,947
                                                                                                                           ---------

Diversified Companies:                             2.3%
  Rockwell International Corporation                                                                          90,725       4,740,381
  Sonat, Inc.                                                                                                126,200       5,773,650
                                                                                                                           ---------
     Diversified Companies total                                                                                          10,514,031

Miscellaneous:                                     2.3%
  Interim Services, Inc.***                                                                                  406,800      10,525,950
                                                                                                                           ---------

     TOTAL COMMON STOCKS
     (COST: $381,126,615)                                                                                               $435,141,728
                                                                                                                         -----------

     TOTAL INVESTMENTS, CAPITAL APPRECIATION
     STOCK FUND (COST:$404,240,049)**                                                                                   $458,255,162
                                                                                                                         ===========


See accompanying notes to investments in securities.
<FN>
     *Moody's/Standard  & Poors' quality  ratings  (unaudited).  See the current
Prospectus and Statement of Additional Information for a complete description of
these ratings.

  **At December 31, 1997, the cost of securities for federal income tax purposes
was  $404,280,283.  The aggregate  unrealized  appreciation  and depreciation of
investments in securities based on this cost were:
  Gross unrealized appreciation.................................... $62,867,872
  Gross unrealized depreciation...................................   (8,892,995)
                                                                     ----------
  Net unrealized appreciation...................................... $53,974,878
                                                                     ==========
Tax cost and appreciation  differ from the financial statement by $40,234 due to
timing of dividend distributions.

***This Security is not income producing.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>

                                                                 1
                                         GROWTH AND INCOME STOCK FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


GROWTH AND INCOME STOCK                      % Net        Quality      Annualized       Maturity             Par
FUND INVESTMENTS:                           Assets        Rating*         Yield           Date             Amount            Value
                                            ------        -------         -----           ----             ------            -----
<S>                                    <C>             <C>            <C>          <C>               <C>             <C>

Short-Term Investments:
Commercial Paper/Savings:                    4.7%
  Anheuser Busch Companies                                A-1/P-1         5.85%       Jan 08, 1998      $3,000,000      $2,996,646
  Associate Corp NA                                       A-1+/P-1        5.68%       Jan 06, 1998       1,500,000       1,498,848
  Associate Corp NA                                       A-1+/P-1        5.83%       Jan 05, 1998       3,500,000       3,497,779
  BellSouth Telecomm Inc                                  A-1+/P-1        5.28%       Jan 13, 1998       2,000,000       1,996,250
  BellSouth Telecomm Inc                                  A-1+/P-1        6.04%       Jan 05, 1998       2,244,000       2,242,516
  Ford Motor Credit Company                               A-1/P-1         5.83%       Feb 02, 1998       2,500,000       2,487,378
  Ford Motor Credit Company                               A-1/P-1         5.94%       Jan 06, 1998       2,756,000       2,753,761
  General Electric Capital Corp                           A-1+/P-1        5.73%       Jan 12, 1998       1,000,000         998,292
  General Electric Capital Corp                           A-1+/P-1        5.74%       Jan 14, 1998       1,000,000         997,978
  General Electric Capital Corp                           A-1+/P-1        5.86%       Jan 14, 1998       2,000,000       1,995,869
  Merrill Lynch & Co Inc                                  A-1+/P-1        5.79%       Feb 02, 1998       1,000,000         994,996
  Merrill Lynch & Co Inc                                  A-1+/P-1        5.86%       Jan 16, 1998       3,000,000       2,992,850
  State Street Bank & Trust                                               5.25%                          2,250,069       2,250,070
                                                                                                                        ----------
     TOTAL COMMERCIAL PAPER/
     SAVINGS, AT COST                                                                                                  $27,703,233
                                                                                                                        ----------

Quasi-Government/Government Sponsored:       0.2%
  Federal Home Loan Discount Notes                        AAA             5.76%       Feb 19, 1998      $1,055,000      $1,046,930
                                                                                                                         ---------

                                             % Net
Long-Term Investments:                      Assets                                                         Shares            Value
Common Stocks:                              94.2%

Foreign Issues:                              2.8%
  Glaxo Wellcome PLC - ADR                                                                                 201,350      $9,639,631
  Philips Electronics N.V.                                                                                 113,700       6,878,850
                                                                                                                         ---------
     Foreign Issues total                                                                                               16,518,481

Forest Products/Paper:                       2.7%
  Georgia-Pacific Corporation                                                                               94,300       5,728,725
  Georgia-Pacific (Timber Grp)***                                                                           78,100       1,771,894
  Kimberly-Clark Corporation                                                                               173,900       8,575,444
                                                                                                                         ---------
     Forest Products/Paper total                                                                                        16,076,063

Insurance:                                   8.3%
  Aetna Inc.                                                                                               192,700      13,597,393
  Allstate Corporation                                                                                     183,684      16,692,283
  Everest Reinsurance Holdings, Inc.                                                                       142,350       5,871,937
  Travelers Group, Inc.                                                                                    242,724      13,076,755
                                                                                                                         ---------
     Insurance total                                                                                                    49,238,368

Banks:                                       3.7%
  Banc One Corporation                                                                                     233,100      12,660,244
  Bankers Trust New York Corporation                                                                        81,100       9,118,681
                                                                                                                         ---------
     Banks total                                                                                                        21,778,925

Investment Banking/Brokerage:                2.4%
  A. G. Edwards, Inc.                                                                                      153,050       6,083,738
  Morgan Stanley, Dean Witter, Discover
     and Co.                                                                                               133,000       7,863,625
                                                                                                                         ---------
     Investment Banking/Brokerage total                                                                                 13,947,363

Drugs/Health Care:                           7.8%
  American Home Products Corporation                                                                       192,100      14,695,650
  Bristol-Myers Squibb Company                                                                             170,400      16,124,100
  Pharmacia and Upjohn, Inc.                                                                               139,200       5,098,200
  Tenet Healthcare Corporation                                                                             300,300       9,947,438
                                                                                                                         ---------
     Drugs/Health Care total                                                                                            45,865,388

Retail - Department:                         1.6%
  Sears, Roebuck & Co.                                                                                     205,300       9,289,825
                                                                                                                         ---------

</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                         GROWTH AND INCOME STOCK FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


GROWTH AND INCOME STOCK                         % Net
FUND INVESTMENTS, CONTINUED:                    Assets                                                     Shares          Value
<S>                                          <C>                                                    <C>             <C>
Retail - Discount:                              2.4%
  Wal-Mart Stores, Inc.                                                                                    354,200     $13,968,763
                                                                                                                         ---------

Retail - Drug:                                  1.2%
  CVS Corporation                                                                                          112,653       7,216,833
                                                                                                                         ---------

Retail - Grocery:                               0.6%
  American Stores Company                                                                                  158,000       3,248,875
                                                                                                                         ---------

Media:                                          1.3%
  Cox Communications, Inc.***                                                                              192,300       7,704,019
                                                                                                                         ---------

Foods - Products & Service:                     7.6%
  General Mills, Inc.                                                                                      141,200      10,113,450
  Nabisco Holdings Corporation-Class A                                                                     325,800      15,780,937
  Sara Lee Corporation                                                                                     200,700      11,301,918
  Tyson Foods, Inc. - Class A                                                                              382,725       7,845,863
                                                                                                                         ---------
     Foods - Products & Service total                                                                                   45,042,168

Auto-Related:                                   1.7%
  Echlin Inc.                                                                                              147,300       5,330,419
  General Motors Corporation                                                                                81,150       4,919,719
                                                                                                                         ---------
     Auto-Related total                                                                                                 10,250,138

Office Equipment/Computers:                     8.9%
  Computer Associates International, Inc.                                                                  252,000      13,324,500
  EMC Corporation***                                                                                       554,100      15,203,118
  Hewlett-Packard Company                                                                                  110,400       6,900,000
  International Business Machines Corporation                                                              165,400      17,294,638
                                                                                                                         ---------
     Office Equipment/Computers total                                                                                   52,722,256

Electronics:                                    2.9%
  Motorola, Inc.                                                                                           122,300       6,978,744
  Texas Instruments Incorporated                                                                           219,400       9,873,000
                                                                                                                         ---------
     Electronics total                                                                                                  16,851,744

Aerospace/Defense:                              1.4%
  United Technologies Corporation                                                                          114,500       8,337,031
                                                                                                                         ---------

Pollution Control:                              1.1%
  Waste Management, Inc.                                                                                   240,550       6,615,125
                                                                                                                         ---------

Oil/Oil Service:                                8.9%
  Amoco Corporation                                                                                         61,800       5,260,725
  Exxon Corporation                                                                                        141,200       8,639,675
  Occidental Petroleum Corporation                                                                         221,750       6,500,047
  Texaco, Inc.                                                                                             103,600       5,633,250
  Unocal Corporation                                                                                       198,750       7,713,984
  USX-Marathon Group                                                                                       281,650       9,505,688
  The Williams Companies, Inc.                                                                             325,800       9,244,575
                                                                                                                         ---------
     Oil/Oil Service total                                                                                              52,497,944

Containers:                                     3.5%
  Crown Cork & Seal Company, Inc.                                                                          180,000       9,022,500
  Owens-Illinois, Inc.***                                                                                  309,500      11,741,656
                                                                                                                         ---------
     Containers total                                                                                                   20,764,156

Chemicals:                                      4.4%
  Dexter Corporation                                                                                       246,700      10,654,356
  The Dow Chemical Company                                                                                 148,750      15,098,125
                                                                                                                         ---------
     Chemicals total                                                                                                    25,752,481

</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                         GROWTH AND INCOME STOCK FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


GROWTH AND INCOME STOCK                      % Net
FUND INVESTMENTS, CONTINUED:                Assets                                                         Shares            Value
<S>                                    <C>                                                           <C>           <C>
Transportation:                              1.0%
  Delta Air Lines, Inc.                                                                                     48,950      $5,825,050
                                                                                                                         ---------

Railroad Equipment:                          1.8%
  Burlington Northern Santa Fe 
    Corporation                                                                                             56,400       5,241,675
  Norfolk Southern Corporation                                                                             182,200       5,614,038
                                                                                                                         ---------
     Railroad Equipment total                                                                                           10,855,713

Telecommunications:                          6.8%
  AirTouch Communications, Inc.***                                                                         207,100       8,607,594
  Harris Corporation                                                                                       159,800       7,330,825
  Sprint Corporation                                                                                       145,500       8,529,937
  U.S. WEST Media Group                                                                                    545,200      15,742,650
                                                                                                                         ---------
     Telecommunications  total                                                                                          40,211,006

Utilities-Telephone:                         4.1%
  Ameritech Corporation                                                                                    112,950       9,092,475
  Bell Atlantic Corporation                                                                                 85,850       7,812,350
  GTE Corporation                                                                                          142,450       7,443,013
                                                                                                                         ---------
     Utilities-Telephone total                                                                                          24,347,838

Utilities-Electric:                          2.5%
  Duke Energy Company                                                                                       75,100       4,158,663
  Northern States Power Company                                                                             61,000       3,553,250
  PG&E Corporation                                                                                         232,300       7,070,631
                                                                                                                         ---------
     Utilities-Electric total                                                                                           14,782,544

Diversified Companies:                       2.8%
  Rockwell International Corporation                                                                       177,880       9,294,230
  General Signal Corporation                                                                               169,000       7,129,688
                                                                                                                         ---------
     Diversified Companies total                                                                                        16,423,918

     TOTAL COMMON STOCKS
     (COST: $432,760,587)                                                                                             $556,132,014
                                                                                                                       -----------

     TOTAL INVESTMENTS, GROWTH AND
     INCOME STOCK FUND 
         (COST: $461,510,749)**                                                                                       $584,882,177
                                                                                                                       ===========

See accompanying notes to investments in securities.
<FN>
     *Moody's/Standard  & Poors' quality  ratings  (unaudited).  See the current
Prospectus and Statement of Additional Information for a complete description of
these ratings.

  **At December 31, 1997, the cost of securities for federal income tax purposes
was  $461,510,749.  The aggregate  unrealized  appreciation  and depreciation of
investments in securities based on this cost were:
     Gross unrealized appreciation................................$131,689,818
     Gross unrealized depreciation............  ....................(8,318,391)
                                                                   -----------
     Net unrealized appreciation..................................$123,371,427
                                                                   ===========

***This Security is not income producing.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                 BALANCED FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


                                                       % Net   Quality   Annualized     Maturity          Par  
BALANCED FUND INVESTMENTS:                            Assets   Rating*      Yield         Date          Amount         Value
                                                      ------   -------      -----         ----          ------         -----
Short-Term Investments:
<S>                                                <C>       <C>         <C>        <C>            <C>          <C>
Commercial Paper/Savings:                              7.2%
  Associate Corp of North America                              A-1+/P-1     5.82%     Jan 27, 1998   $1,500,000   $1,493,847
  CIT Group Holdings                                           A-1/P-1      5.71%     Feb 03, 1998    2,000,000    1,989,825
  Ford Motor Credit Corporation                                A-1/P-1      5.99%     Jan 05, 1998    4,000,000    3,994,184
  General Electric Capital Corporation                         A-1+/P-1     5.81%     Jan 22, 1998    5,000,000    4,987,228
  Interstate Power                                             A-1/P-1      6.01%     Jan 29, 1998    2,000,000    1,990,822
  Merrill Lynch & Co., Inc                                     A-1+/P-1     5.82%     Feb 27, 1998    4,000,000    3,985,653
  Walt Disney Company                                          A-1/P-1      5.70%     Jan 02, 1998    2,000,000    1,999,690
  State Street Bank & Trust                                                 5.25%                     1,710,242    1,710,243
                                                                                                                  ----------
     TOTAL COMMERCIAL PAPER/
     SAVINGS, AT COST                                                                                            $22,151,492
                                                                                                                  ----------

                                                       % Net   Quality     Coupon       Maturity          Par
U.S. Government & Agency Bonds:                       Assets   Rating*      Rate          Date          Amount         Value
                                                      ------   -------      ----          ----          ------         -----
Government Guaranteed:                                 7.1%
  Government National Mortgage Assn.-97-8 PK****               AAA          7.500     Apr 16, 2026   $5,170,266   $1,625,263
  U.S. Treasury Notes                                          AAA          8.500     Feb 15, 2000      500,000      527,969
  U.S. Treasury Notes                                          AAA          7.500     Nov 15, 2001    1,000,000    1,060,938
  U.S. Treasury Notes                                          AAA          7.875     Apr 15, 1998    1,000,000    1,007,188
  U.S. Treasury Notes                                          AAA          5.500     Apr 15, 2000      500,000      498,282
  U.S. Treasury Notes                                          AAA          7.125     Sep 30, 1999      900,000      921,657
  U.S. Treasury Notes                                          AAA          5.875     Feb 15, 2004      950,000      958,907
  U.S. Treasury Notes                                          AAA          5.750     Aug 15, 2003      800,000      801,000
  U.S. Treasury Notes                                          AAA          6.500     May 15, 2005    1,100,000    1,147,094
  U.S. Treasury Notes                                          AAA          6.500     Aug 15, 2005      700,000      730,626
  U.S. Treasury Notes                                          AAA          5.875     Nov 15, 2005    7,350,000    7,391,351
  U.S. Treasury Notes                                          AAA          6.250     Feb 15, 2007    5,000,000    5,162,505
                                                                                                                  ----------
     TOTAL GOVERNMENT GUARANTEED
     (COST: $21,704,168)                                                                                         $21,832,780
                                                                                                                  ----------

Quasi-Government/Government Sponsored:                17.1%
  Federal Home Loan Bank-CPI Floating Rate                     AAA          5.421     Feb 20, 2007   $5,000,000   $4,778,950
  Federal Home Loan Mortgage Corp. 1455 HA                     AAA          7.900     Jun 15, 2021    3,344,000    3,641,338
  Federal Home Loan Mortgage Corp. 1378 H                      AAA         10.000     Jan 15, 2021    2,250,000    2,561,834
  Federal Home Loan Mortgage Corp.-GNMA 4-B                    AAA          6.500     Nov 25, 2002    4,500,000    4,526,046
  Federal Home Loan Mortgage Corp.                             AAA          6.440     Jan 28, 2000      250,000      253,059
  Federal Home Loan Mortgage Corp.-1992 PH****                 AAA          7.000     Sep 15, 2027    2,000,000      818,550
  Federal Home Loan Mortgage Corp.-1978 AD                     AAA          7.000     Apr 15, 2025    2,045,655    2,042,049
  FNMA Pass Through Cert.                                      AAA          8.000     Feb 01, 2002       68,685       70,371
  Federal National Mortgage Assn.-89-82 G                      AAA          8.400     Nov 25, 2019    1,600,000    1,690,117
  Federal National Mortgage Assn.-Strip 282-2****              AAA          7.000     Sep 01, 2025    7,513,262    2,239,118
  Federal National Mortgage Assn.-97-59 J****                  AAA          8.000     July 18, 2027   8,000,000    2,806,840
  Federal National Mortgage Assn.-97-29 PL****                 AAA          7.500     Aug 18, 2026    8,000,000    3,249,384
  Federal National Mortgage Assn.-93-62 D                      AAA          7.000     Jun 25, 2021    4,000,000    4,027,788
  Federal National Mortgage Assn.-96-M6  G                     AAA          7.750     Sep 17, 2023    4,000,000    4,222,520
  Federal National Mortgage Assn.-91-137 H                     AAA          7.000     Oct 25, 2021    4,000,000    4,052,332
  Federal National Mortgage Assn.-G93-8 PG                     AAA          6.500     July 25, 2018   2,000,000    2,000,620
  Federal National Mortgage Assn.-97-48 C                      AAA          6.500     July 18, 2027   3,572,274    3,545,665
  Federal National Mortgage Assn.-97-57 PT****                 AAA          8.000     Mar 18, 2024    8,000,000    2,256,976
  Federal Home Loan Mortgage Corp.-Strip 183 IO****            AAA          7.000     Apr 01, 2027    7,805,793    2,357,857
  Federal National Mortgage Assn.-Strip 272-2****              AAA          7.500     July 01, 2026   7,278,272    1,865,021
                                                                                                                   ----------
     TOTAL QUASI-GOVERNMENT/GOVERNMENT
     SPONSORED (COST: $53,322,686)                                                                                $53,006,435
                                                                                                                   ----------

Non-U.S. Government Bonds:

Sovereign Issues:                                      3.8%
  Argentina Global Bond                                        BA-3/BB      8.375     Dec 20, 2003   $4,250,000   $4,048,125
  Brazil - Global                                              B-1/BB-      8.875     Nov 05, 2001    2,500,000    2,475,000
  Columbia, Republic                                           BAA-3/BBB-   7.250     Feb 23, 2004    3,000,000    2,845,956
  Ministry of Finance - Russia                                 Ba-2/BB-    10.000     Jun 26, 2007    2,500,000    2,322,500
                                                                                                                  ----------
     TOTAL SOVEREIGN ISSUES (COST: $12,238,117)                                                                  $11,691,581
                                                                                                                  ----------
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                 BALANCED FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BALANCED FUND INVESTMENTS,                             % Net    Quality     Coupon     Maturity        Par
CONTINUED:                                            Assets    Rating*      Rate        Date         Amount        Value
                                                      ------    -------      ----        ----         ------        -----
<S>                                              <C>        <C>          <C>        <C>            <C>          <C>
U.S Corporate Bonds:                                  17.3%

Building Materials:                                    0.1%
  Stanley Works                                                A-2/A        7.375     Dec 15, 2002     $250,000     $263,287
                                                                                                                    --------

Drug/Health Care:                                      0.7%
  Abbott Laboratories, Inc.                                    AA-1/AAA     6.800     May 15, 2005      500,000      522,142
  American Home Products, Corp.                                A-2/A        7.700     Feb 15, 2000    1,050,000    1,083,818
  Bergen Brunswig                                              BAA-1/A-     7.250     Jun 01, 2005      500,000      522,049
  Bergen Brunswig                                              BAA-1/A-     7.375     Jan 15, 2003      113,000      117,995
                                                                                                                   ---------
     Drug/Health Care total                                                                                        2,246,004

Electronics:                                           0.4%
  Motorola Inc                                                 AA-3/AA      6.500     Sep 01, 2025       50,000       52,134
  Raytheon Co.                                                 BAA-1/BBB    6.500     Jul 15, 2005      530,000      533,380
  Texas Instruments, Inc.                                      A-3/A        9.000     Mar 15, 2001      500,000      541,729
                                                                                                                   ---------
     Electronics total                                                                                             1,127,243

Forest Products/Paper:                                 1.3%
  Champion International Corp.                                 BAA-1/BBB    9.875     Jun 01, 2000      250,000      270,506
  Champion International Corp.                                 BAA-1/BBB    7.100     Sep 01, 2005    1,570,000    1,628,640
  International Paper                                          A-3/A-       7.875     Aug 01, 2006      500,000      545,132
  Kimberly Clark Corp.                                         AA-2/AA      9.000     Aug 01, 2000      750,000      803,219
  Weyerhaeuser Company                                         A-2/A        8.375     Feb 15, 2007      800,000      911,958
                                                                                                                   ---------
     Forest Products/Paper total                                                                                   4,159,455

Hospital Management/Supplies:                          0.3%
  Baxter International, Inc.                                   A-3/A        7.625     Nov 15, 2002      250,000      263,861
  Columbia/HCA Healthcare Corporation                          BAA-2/BBB    6.910     Jun 15, 2005      700,000      684,779
                                                                                                                   ---------
     Hospital Management/Supplies total                                                                              948,640

Insurance/Casualty:                                    0.5%
  Equitable Life Assoc                                         A-2/A        6.950     Dec 01, 2005    1,050,000    1,070,702
  Lincoln National Corp.                                       A-2/A        7.250     May 15, 2005      500,000      519,633
                                                                                                                   ---------
     Insurance/Casualty total                                                                                      1,590,335

Investment Banking/Brokerage:                          2.0%
  Donaldson, Lufkin Jenrette, Inc.                             A-3/A-       6.875     Nov 01, 2005      300,000      304,588
  Donaldson, Lufkin Jenrette, Inc.                             A-3/A-       5.625     Feb 15, 2016      520,000      513,985
  Merrill Lynch & Co., Inc.                                    AA-3/AA-     6.250     Jan 15, 2006      650,000      639,939
  Merrill Lynch & Co., Inc.                                    AA-3/AA-     7.000     Mar 15, 2006    1,000,000    1,030,348
  Paine Webber Group                                           BAA-1/BBB+   6.750     Feb 01, 2006    1,000,000    1,004,972
  Salomon Inc.                                                 A-2/A        7.125     Aug 01, 1999    1,000,000    1,015,580
  Salomon Inc.                                                 A-2/A        7.200     Feb 01, 2004    1,500,000    1,553,409
                                                                                                                   ---------
     Investment Banking/Brokerage total                                                                            6,062,821

Finance Co. - Consumer Loan:                           0.5%
  American General Finance                                     A-2/A+       7.125     Dec 01, 1999      500,000      509,439
  Household Finance Co.                                        A-2/A        7.125     Sep 01,2005       500,000      517,997
  Norwest Financial Inc.                                       AA-3/AA-     7.875     Feb 15, 2002      500,000      530,507
                                                                                                                   ---------
     Finance Co. - Consumer Loan total                                                                             1,557,943

Mortgage Related Securities:                           0.5%
  Prudential Home Funding                                      AAA          6.050     Apr 25, 2024    1,500,000    1,398,930
                                                                                                                   ---------

Media:                                                 0.3%
  Cox Communications                                           BAA-2/A-     6.875     Jun 15, 2005      500,000      512,917
  McGraw-Hill, Inc.                                            A-1          9.430     Sep 01, 2000      250,000      269,239
                                                                                                                   ---------
     Media total                                                                                                     782,156

Publishing-News:                                       0.2%
  Knight Ridder, Inc.                                          A-3/A        8.500     Sep 01, 2001      500,000      518,935
                                                                                                                   ---------

</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                 BALANCED FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BALANCED FUND INVESTMENTS,                   % Net        Quality        Coupon         Maturity             Par
CONTINUED:                                  Assets        Rating*         Rate            Date              Amount           Value
                                            ------        -------         ----            ----              ------           -----
<S>                                     <C>           <C>             <C>          <C>                 <C>            <C>
Retail-Department:                           0.2%
  Dayton Hudson Corp.                                     BAA-1/BBB+      9.750       Nov 01, 1998        $500,000        $514,127
                                                                                                                         ---------

Beverage/Confect/Tobacco:                    0.1%
  Pepsico Inc.                                            A-1/A           6.125       Jan 15, 1998         250,000         250,648
                                                                                                                         ---------

Auto-Related:                                1.3%
  Borg-Warner Automotive                                  BAA-2/BBB+      7.000       Nov 01, 2006       1,150,000       1,187,162
  Ford Motor Company                                      A-1/A           7.500       Nov 15, 1999         500,000         512,553
  Ford Motor Company                                      A-1/A           7.250       Oct 01, 2008       2,000,000       2,127,636
  General Motors Corporation                              A-3/A-          7.000       Jun 15, 2003         300,000         310,726
                                                                                                                         ---------
     Auto-Related total                                                                                                  4,138,077

Hotel & Motel:                               0.4%
  Marriott International, Inc.                            BAA-1/BBB+      7.125       Jun 01, 2007       1,050,000       1,095,304
                                                                                                                         ---------

Electric Household Appliances:               0.1%
  Maytag Corporation                                      BAA-1/BBB+      9.750       May 15, 2002         250,000         282,138
                                                                                                                         ---------

Finance-Diversified:                         1.7%
  Associate Corp of N America                             AA-3/AA-        5.250       Sep 01, 1998          40,000          39,822
  Dow Capital B.V.                                        A-1/A           7.125       Jan 15, 2003         250,000         259,379
  Ford Motor Credit                                       A-1/A           6.125       Jan 09, 2006       1,000,000         978,051
  General Motors Acceptance Corp                          A-3/A-          6.450       Apr 15, 1999       2,900,000       2,912,882
  U.S. West Capital Funding                               BAA-1/BBB+      6.750       Oct 01, 2005       1,000,000       1,008,534
                                                                                                                         ---------
     Finance-Diversified total                                                                                           5,198,668

Engineering/Construction Services:           0.3%
  Foster Wheeler Corp.                                    BAA-2/BBB       6.750       Nov 15, 2005       1,020,000       1,025,204
                                                                                                                         ---------

Machinery/Tools:                             0.4%
  Giddings & Lewis                                        BA-1            7.500       Oct 01, 2005         500,000         521,974
  Ingersoll Rand Company                                  A-3/A-          6.480       Jun 01. 2025         700,000         719,376
                                                                                                                         ---------
     Machinery/Tools total                                                                                               1,241,350

Office Equipment/Computers:                  0.1%
  Xerox Corporation                                       A-2/A           7.150       Aug 01, 2004         300,000         314,215
                                                                                                                         ---------

Oil/Oil Service:                             0.5%
  Enron Corp.                                             BAA-2/BBB+      7.625       Sep 10, 2004         500,000         530,464
  Mobil Corporation                                       AA-2/AA         8.375       Feb 12, 2001         500,000         532,500
  Union Oil California                                    BAA-1/BBB+      7.200       May 15, 2005         500,000         522,040
                                                                                                                         ---------
     Oil/Oil Service total                                                                                               1,585,004

Chemicals:                                   0.4%
  PPG Industries, Inc.                                    A-1/A           6.875       Aug 01, 2005         500,000         521,446
  Union Carbide Corporation                               BAA-2/BBB       6.790       Jun 01, 2025         700,000         725,847
                                                                                                                         ---------
     Chemicals total                                                                                                     1,247,293

Specialty Chemicals:                         0.2%
  Praxair, Inc.                                           A-3/BBB+        6.850       Jun 15, 2005         500,000         515,597
                                                                                                                         ---------

Transportation:                              2.4%
  American Airlines                                       A-3/BBB         8.040       Sep 16, 2011       1,000,000       1,077,780
  Burlington Northern Inc.                                BAA-2/BBB       7.400       May 15, 1999         500,000         508,761
  Delta Air Lines                                         BAA-1/BBB       8.540       Jan 02, 2007       1,478,492       1,592,826
  Federal Express                                         A-3/BBB+        7.850       Jan 30, 2015         983,319       1,071,346
  Federal Express                                         A-3/BBB+        7.890       Sep 23, 2008         500,000         533,535
  Golden State Petroleum Transport Corp.                  AA-2            8.040       Feb 01, 2019       2,000,000       2,143,428
  United Airlines                                         Baa-1/BBB       9.020       Apr 19, 2012         462,541         534,813
                                                                                                                         ---------
     Transportation total                                                                                                7,462,489
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                 BALANCED FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BALANCED FUND INVESTMENTS,                   % Net        Quality        Coupon         Maturity             Par
CONTINUED:                                  Assets        Rating*         Rate            Date              Amount           Value
                                            ------        -------         ----            ----              ------           -----
<S>                                      <C>           <C>            <C>          <C>               <C>             <C>
Aerospace/Defense:                           0.6%
  Lockheed Martin                                         A-3/BBB+        6.850       May 15, 2001      $1,250,000      $1,270,875
  Rockwell International Corp.                            A-1/AA+         7.625       Feb 17, 1998         500,000         500,961
                                                                                                                         ---------
     Aerospace/Defense total                                                                                             1,771,836

Utilities-Telephone:                         0.6%
  Alltel Corporation                                      A-2/A+          7.250       Apr 01, 2004         500,000         523,121
  BellSouth Telecommunications, Inc.                      AAA/AAA         6.500       Jun 15, 2005         350,000         357,087
  GTE-California                                          AA-3/AA-        6.250       Jan 15, 1998         250,000         250,026
  GTE Corporation                                         BAA-1/A         9.100       Jun 01, 2003         500,000         562,578
  Northwestern Bell Telephone Co.                         AA-3/A          9.500       May 01, 2000         250,000         268,769
                                                                                                                         ---------
     Utilities-Telephone total                                                                                           1,961,581

Utilities-Electric:                          1.0%
  Consolidated Edison of New York, Inc.                   A-1/A+          6.250       Apr 01, 1998         300,000         300,222
  Midwest Power Systems                                   A-2/AA-         7.125       Feb 01, 2003         250,000         260,116
  Pacific Gas & Electric Co.                              A-1/AA-         6.250       Aug 01, 2003         300,000         300,604
  Pacificorp                                              A-2/A           6.750       Apr 01, 2005         500,000         510,954
  System Energy Resources                                 BAA-3/BBB-      7.625       Apr 01, 1999       1,100,000       1,119,790
  Wisconsin Public Service, Inc.                          AA-2/AA+        7.300       Oct 01, 2002         500,000         525,360
                                                                                                                         ---------
     Utilities-Electric total                                                                                            3,017,046

Utilities-Natural Gas Pipeline:              0.1%
  Burlington Resources Inc.                               A-3/A-          9.625       Jun 15, 2000         250,000         269,712
  Southern Cal Gas Co                                     A-1/AA-         5.250       Mar 01, 1998          20,000          19,981
                                                                                                                         ---------
     Utilities-Natural Gas Pipeline total                                                                                  289,693

Diversified Companies:                       0.1%
  Whitman Corporation                                     BAA-2/BBB+      7.500       Feb 01, 2003         300,000         315,538
                                                                                                                         ---------

     TOTAL U.S. CORPORATE BONDS,
     AT COST: ($50,975,878)                                                                                            $52,881,547
                                                                                                                        ----------

NON - U.S. CORPORATE BONDS:                  0.2%

  Shell Canada, Ltd.                                      AA-2/AA         8.875       Jan 14, 2001        $500,000        $539,125

     TOTAL NON - U.S. CORPORATE BONDS,
     AT COST: ($505,991)                                                                                                  $539,125
                                                                                                                         ---------


                                             % Net
                                            Assets                                                         Shares            Value
Common Stocks:                               47.8%

Foreign Issues:                              1.7%
  Glaxo Wellcome PLC - ADR                                                                                  38,150      $1,826,431
  Philips Electronics N.V.                                                                                  18,500       1,119,250
  Telefonos deMexico  SP ADR Cl L                                                                           39,000       2,186,438
                                                                                                                         ---------
     Foreign Issues total                                                                                                5,132,119

Building Materials:                          0.9%
  Raychem Corporation                                                                                       62,600       2,695,713
                                                                                                                         ---------

Forest Products/Paper:                       1.1%
  Georgia-Pacific Corporation                                                                               26,400       1,603,800
  Georgia-Pacific (Timber Grp)***                                                                           19,800         449,213
  Willamette Industries, Inc.                                                                               44,500       1,432,344
                                                                                                                         ---------
     Forest Products/Paper total                                                                                         3,485,357


</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                 BALANCED FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BALANCED FUND INVESTMENTS,                   % Net
CONTINUED:                                  Assets                                                         Shares            Value
<S>                                      <C>                                                          <C>            <C>
Insurance:                                   3.9%
  Aetna Inc.                                                                                                43,400      $3,062,413
  Allstate Corporation                                                                                      41,557       3,776,492
  Everest Reinsurance Holdings, Inc.                                                                        38,500       1,588,125
  Travelers Group, Inc.                                                                                     68,986       3,716,621
                                                                                                                         ---------
     Insurance total                                                                                                    12,143,651

Banks:                                       1.4%
  Banc One Corporation                                                                                      42,300       2,297,419
  Bankers Trust New York Corporation                                                                        17,800       2,001,388
                                                                                                                         ---------
     Banks total                                                                                                         4,298,807

Investment Banking/Brokerage:                1.3%
  A. G. Edwards, Inc.                                                                                       54,600       2,170,350
  Morgan Stanley, Dean Witter, Discover
     and Co.                                                                                                29,400       1,738,275
                                                                                                                         ---------
     Investment Banking/Brokerage total                                                                                  3,908,625

Drugs/Health Care:                           4.0%
  American Home Products Corporation                                                                        45,700       3,496,050
  Bristol-Myers Squibb Company                                                                              40,200       3,803,925
  Centocor, Inc.***                                                                                         30,200       1,004,150
  MedPartners, Inc.***                                                                                      39,188         876,832
  Pharmacia & Upjohn, Inc.                                                                                  42,700       1,563,888
  United Healthcare Corp.                                                                                   32,300       1,604,906
                                                                                                                         ---------
     Drugs/Health Care total                                                                                            12,349,751

Hospital Management/Supplies:                0.6%
  Columbia/HCA Healthcare Corporation                                                                       58,450       1,731,581
                                                                                                                         ---------

Retail-Deptarment:                           1.3%
  Dayton Hudson Corporation                                                                                 30,400       2,052,000
  Sears, Roebuck & Co.                                                                                      45,700       2,067,925
                                                                                                                         ---------
     Retail-Deptarment  total                                                                                            4,119,925

Retail - Discount:                           0.8%
  Wal-Mart Stores, Inc.                                                                                     66,200       2,610,763
                                                                                                                         ---------

Retail - Drug:                               0.8%
  CVS Corporation                                                                                           37,126       2,378,384
                                                                                                                         ---------

Retail - Grocery:                            0.7%
  Safeway Inc.***                                                                                           36,300       2,295,975
                                                                                                                         ---------

Media:                                       2.0%
  Cognizant Corporation                                                                                     31,300       1,394,806
  Cox Communications, Inc.***                                                                               66,700       2,672,169
  PRIMEDIA Inc.***                                                                                         171,500       2,165,188
                                                                                                                         ---------
     Media total                                                                                                         6,232,163

Foods-Food Products:                         3.4%
  General Mills, Inc.                                                                                       31,400       2,249,025
  Nabisco Holdings Corp. - Class A                                                                          88,200       4,272,188
  Sara Lee Corp.                                                                                            34,800       1,959,675
  Tyson Foods, Inc. - Class A                                                                              104,625       2,144,813
                                                                                                                         ---------
     Foods-Food Products total                                                                                          10,625,701

Auto-Related:                                0.4%
  General Motors Corporation                                                                                21,600       1,309,500
                                                                                                                         ---------

Apparel/Textile:                             0.4%
  Nine West Group, Inc.***                                                                                  42,900       1,112,719
                                                                                                                         ---------

</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                 BALANCED FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BALANCED FUND INVESTMENTS,                   % Net
CONTINUED:                                  Assets                                                         Shares            Value
<S>                                      <C>                                                            <C>          <C>
Office Equipment/Computers:                  4.8%
  EMC Corporation***                                                                                       127,800      $3,506,513
  Gateway 2000, Inc.***                                                                                     47,200       1,539,900
  International Business Machines 
      Corporation                                                                                           41,600       4,349,800
  Seagate Technology, Inc.***                                                                               24,200         465,850
  3Com Corporation***                                                                                       67,600       2,361,775
  Wang Laboratories, Inc.***                                                                               112,500       2,489,063
                                                                                                                         ---------
     Office Equipment/Computers total                                                                                   14,712,901

Electronics:                                 1.9%
  Hewlett-Packard Company                                                                                   25,000       1,562,500
  Micron Technology Inc.***                                                                                 37,450         973,700
  Motorola, Inc.                                                                                            27,600       1,574,925
  Texas Instruments Incorporated                                                                            40,000       1,800,000
                                                                                                                         ---------
     Electronics total                                                                                                   5,911,125

Pollution Control:                           0.5%
  Waste Management, Inc.                                                                                    60,000       1,650,000
                                                                                                                         ---------

Oil/Oil Service:                             4.0%
  Amoco Corporation                                                                                         16,450       1,400,306
  Exxon Corporation                                                                                         32,000       1,958,000
  Occidental Petroleum Corporation                                                                          56,600       1,659,088
  Unocal Corporation                                                                                        86,200       3,345,638
  USX-Marathon Group                                                                                        72,400       2,443,500
  Williams Companies                                                                                        51,200       1,452,800
                                                                                                                         ---------
     Oil/Oil Service total                                                                                              12,259,332

Containers:                                  1.3%
  Owens-Illinois, Inc.***                                                                                  108,500       4,116,219
                                                                                                                         ---------

Chemicals:                                   1.6%
 The Dow Chemical Company                                                                                   20,900       2,121,350
  Kerr-Mcgee Corporation                                                                                    19,200       1,215,600
  Praxair Inc                                                                                               37,000       1,665,000
                                                                                                                         ---------
     Chemicals total                                                                                                     5,001,950

Transportation:                              1.0%
  Delta Air Lines, Inc.                                                                                     10,500       1,249,500
  Federal Express Corp***                                                                                   30,700       1,874,619
                                                                                                                         ---------
     Transportation total                                                                                                3,124,119

Railroad Equipment:                          0.5%
  Norfolk Southern Corporation                                                                              44,900       1,383,481
                                                                                                                         ---------
Telecommunications:                          1.5%
  U.S. WEST Media Group***                                                                                 159,100       4,594,013
                                                                                                                         ---------

Utilities-Telephone:                         3.5%
  AirTouch Communications, Inc.***                                                                          95,850       3,983,766
  Ameritech Corporation                                                                                     26,500       2,133,250
  Bell Atlantic Corporation                                                                                 25,000       2,275,000
  GTE Corporation                                                                                           44,100       2,304,225
                                                                                                                         ---------
     Utilities-Telephone total                                                                                          10,696,241

Utilities-Electric:                          1.0%
  Northern States Power Company                                                                             29,100       1,695,075
  PG&E Company                                                                                              48,050       1,462,522
                                                                                                                         ---------
     Utilities-Electric total                                                                                            3,157,597

</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                 BALANCED FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BALANCED FUND INVESTMENTS,                   % Net
CONTINUED:                                  Assets                                                         Shares            Value
<S>                                      <C>                                                            <C>          <C>
Diversified Companies:                       1.1%
  Rockwell International Corporation                                                                        32,500      $1,698,125
  United Technologies                                                                                       21,800       1,587,313
                                                                                                                         ---------
     Diversified Companies total                                                                                         3,285,438

Miscellaneous:                               0.6%
  Interim Services, Inc***                                                                                  70,100       1,813,839
                                                                                                                         ---------

     TOTAL COMMON STOCKS,
     AT COST: ($108,237,189)                                                                                          $148,136,979
                                                                                                                       -----------

     TOTAL INVESTMENTS, BALANCED FUND
     AT COST: ($269,135,520)**                                                                                        $310,239,939
                                                                                                                       ===========

See accompanying notes to investments in securities.
<FN>
       *Moody's/Standard & Poors' quality ratings  (unaudited).  See the current
Prospectus and Statement of Additional Information for a complete description of
these ratings.

    **At  December  31,  1997,  the cost of  securities  for federal  income tax
purposes  was   $269,135,520.   The  aggregate   unrealized   appreciation   and
depreciation of investments in securities based on this cost were:
 Gross unrealized appreciation.....................................$45,550,324
 Gross unrealized depreciation......................................(4,445,906)
                                                                     ---------
 Net unrealized appreciation.......................................$41,104,418
                                                                    ==========

  ***This security is not income producing.

****This security  provides a claim on the interest  component of the underlying
mortgages,  but not on their principal  component.  That is, the security's cash
flows  depend on the amount of principal  outstanding  at the payment  date.  If
prepayments on the underlying  mortgages are higher than expected,  the yield on
the security may be adversely affected.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                   BOND FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


                                             % Net        Quality      Annualized       Maturity             Par
BOND FUND INVESTMENTS:                      Assets        Rating*         Yield           Date             Amount            Value
                                            ------        -------         -----           ----             ------            -----
<S>                                      <C>           <C>            <C>          <C>               <C>             <C>
Short-Term Investments:
Government Guaranteed - U.S.:                4.2%
  U.S. Treasury Bill                                      AAA             5.45%       Feb 12, 1998      $8,000,000      $7,950,230
Commercial Paper/Savings:                    1.8%
  Ford Motor Credit Company                               A-1/P-1         6.11%       Jan 02, 1998      $1,000,000        $999,832
  General Electric Capital Corp                           A-1+/P-1        6.54%       Jan 02, 1998         300,000         299,946
  Merrill Lynch & Co Inc                                  A-1+/P-1        6.09%       Jan 02, 1998       2,000,000       1,999,667
  State Street Bank & Trust                                               5.25%                             14,035          14,035
                                                                                                                         ---------
     Total Commercial Paper/Savings                                                                                      3,313,480
                                                                                                                         ---------
     TOTAL SHORT-TERM INVESTMENTS,
     AT COST                                                                                                           $11,263,710
                                                                                                                        ----------
                                             % Net        Quality        Coupon         Maturity             Par
                                            Assets        Rating*         Rate            Date             Amount            Value
U.S. Government & Agency Bonds:              26.5%
Government Guaranteed:                       12.1%
  Government National Mortgage Assn
      - 97-8 PK***                                        AAA             7.500       Apr 16, 2026      $2,000,000        $628,696
  Government National Mortgage
      Association                                         AAA             8.000       Aug 15, 2006          70,203          73,742
  Private Export Funding                                  AAA             5.650       Mar 15, 2003         275,000         273,448
  U.S. Treasury Note                                      AAA             5.750       Aug 15, 2003       5,300,000       5,306,630
  U.S. Treasury Note                                      AAA             5.875       Nov 15, 2005       4,150,000       4,173,348
  U.S. Treasury Note                                      AAA             7.875       Nov 15, 1999       2,000,000       2,077,502
  U.S. Treasury Note                                      AAA             8.000       Aug 15, 1999       1,000,000       1,035,938
  U.S. Treasury                                           AAA             7.500       May 15, 2002       1,000,000       1,068,126
  U.S. Treasury                                           AAA             6.250       Feb 15, 2007       3,000,000       3,097,503
  U.S. Treasury                                           AAA             6.125       Aug 15, 2007       5,000,000       5,140,630
                                                                                                                         ---------
     Government Guaranteed total
     (COST: $22,857,527)                                                                                               $22,875,563
                                                                                                                        ----------
Quasi-Government/Government Sponsored:       14.4%
  Federal Home Loan Bank                                  AAA             5.490       Feb 01, 2001        $200,000        $197,831
  Federal Home Loan Bank                                  AAA             7.020       Jul 06, 1999         100,000         101,781
  Federal Home Loan Bank                                  AAA             7.020       Jul 06, 1999         100,000         104,383
  Federal Home Loan Bank
          -CPI Floating Rate                              AAA             5.421       Feb 20, 2007       2,000,000       1,911,580
  FHLMC Pass Through Cert.                                AAA             8.500       Apr 01, 2001           6,329           6,479
  FHLMC Pass Through Cert.                                AAA             8.500       May 01, 2001          15,807          16,182
  FHLMC Pass Through Cert.                                AAA             8.000       May 01, 2007          31,668          32,819
  Federal Home Loan Mortgage Corp.                        AAA             6.440       Jan 28, 2000         150,000         151,836
  Federal Home Loan Mortgage Corp. 
     1455 HA                                              AAA             7.900       Jun 15, 2021         836,000         910,335
  Federal Home Loan Mortgage Corp.
     1378 H                                               AAA            10.000       Jan 15, 2021         750,000         853,945
  Federal Home Loan Mortgage Corp.
     -GNMA 4 B                                            AAA             6.500       Nov 25, 2002       1,174,000       1,180,795
  Federal Home Loan Mortgage Corp.
     -1506 I                                              AAA             6.750       May 15, 2008       2,000,000       2,033,588
  Federal Home Loan Mortgage Corp.
     - 1539 PM                                            AAA             6.500       Jun 15, 2008       2,000,000       2,004,120
  Federal Home Loan Mortgage Corp.
     - 1510 F                                             AAA             6.900       Mar 15, 2013       2,000,000       2,057,536
  Federal Home Loan Mortgage Corp.
     - 1948 IA***                                         AAA             7.500       Mar 15, 2027         561,391         209,399
  Federal Home Loan Mortgage Corp.
     - 1992 PH***                                         AAA             7.000       Sep 15, 2027       4,000,000       1,637,100
  Federal Home Loan Mortgage Corp.
     - 1978 AD                                            AAA             7.000       Apr 15, 2025       1,000,000         998,237
  Federal Home Loan Mortgage Corp.
     - Strip 183 IO***                                    AAA             7.000       Mar 15, 2027       6,830,069       2,063,125
  Federal Home Loan Mortgage Corp.
     - Strip 282 2***                                     AAA             7.000       Sep 01, 2025       1,878,315         559,779
  Federal National Mortgage Association
      89-82 G                                             AAA             8.400       Nov 25, 2019         400,000         422,529
  Federal National Mortgage Association
      96-M6 G                                             AAA             7.750       Sep 17, 2023       1,000,000       1,055,630
  Federal National Mortgage Association
      93-62 D                                             AAA             7.000       Jun 25, 2021       1,000,000       1,006,947
  Federal National Mortgage Association
      91-137 H                                            AAA             7.000       Oct 25, 2021       1,000,000       1,013,083
  Federal National Mortgage Association
      G93-8 PG                                            AAA             6.500       July 25, 2018      1,000,000       1,000,310
  Federal National Mortgage Association
      - 97-48 C                                           AAA             6.500       July 18, 2027        921,877         915,010
  Federal National Mortgage Association                   AAA             5.450       Oct 10, 2003          10,000           9,738
  Federal National Mortgage Association                   AAA             6.850       Apr 05, 2004          45,000          46,952
  Federal National Mortgage Association
      - 97-59 J***                                        AAA             8.000       July 18, 2027      4,000,000       1,403,420
  Federal National Mortgage Association
      - 97-29 PL***                                       AAA             7.500       Aug 18, 2026       4,000,000       1,624,692
  Federal National Mortgage Association
      - 97-57 PT***                                       AAA             8.000       Mar 18, 2024       4,000,000       1,128,488
  Federal National Mortgage Association
      - Strip 272 2***                                    AAA             7.500       Jul 01, 2026       1,819,568         466,255
                                                                                                                         ---------
     Quasi-Government/Government Sponsored total
     (COST: ($27,336,863)                                                                                              $27,123,904
                                                                                                                        ----------
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                   BOND FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BOND FUND INVESTMENTS,                       % Net        Quality        Coupon         Maturity             Par
CONTINUED:                                  Assets        Rating*         Rate            Date             Amount            Value
                                            ------        -------         ----            ----             ------            -----
<S>                                      <C>           <C>            <C>          <C>               <C>             <C>
Non - U.S. Government Bonds:                 6.1%
Canadian Provincials:                        4.2%
  Hydro Quebec                                            A-1             8.400       Jan 15, 2022      $1,000,000      $1,181,620
  New Brunswick, Prov                                     A-1             6.750       Aug 15, 2013       2,000,000       2,075,880
  Nova Scotia Prov of                                     A-3             9.735       Jul 15, 2002       1,000,000       1,125,920
  Ontario, Province of                                    AA-3            7.750       Jun 04, 2002       1,000,000       1,064,450
  Quebec Province of                                      A-2             9.125       Mar 01, 2000         250,000         265,208
  Saskatchewan Province of                                A-3             7.125       Mar 15, 2008       2,000,000       2,134,260
                                                                                                                         ---------
     Canadian Provincials total                                                                                          7,847,338

Sovereign Issues:                            1.9%
  Argentina Global Bond                                   BA-3/BB         8.375       Dec 20, 2003         750,000         714,375
  Brazil - Global                                         B-1/BB-         8.875       Nov 05, 2001         500,000         495,000
  Columbia, Republic                                      BAA-3/BBB-      7.250       Feb 23, 2004       2,000,000       1,897,304
  Ministry of Finance - Russia                            BA-2/BB-       10.000       Jun 26, 2007         500,000         464,500
                                                                                                                         ---------
     Sovereign Issues total                                                                                              3,571,179

     TOTAL NON - U.S. GOVERNMENT BONDS
     (COST: $11,496,772)                                                                                               $11,418,517
                                                                                                                        ----------

U.S. Corporate Bonds:                        56.5%
Forest Products/Paper:                       5.6%
  Boise Cascade Corp.                                     BAA-3/BBB-      9.450       Nov 01, 2009        $500,000        $609,403
  Boise Cascade Corp.                                     BAA-3/BBB-      9.875       Feb 15, 2001         500,000         517,909
  Champion International Corp.                            BAA-1/BBB       9.875       Jun 01, 2000         100,000         108,202
  Champion International Corp.                            BAA-1/BBB       7.100       Sep 01, 2005       3,750,000       3,890,063
  Champion International Corp.                            BAA-1/BBB       6.400       Feb 15, 2026       2,000,000       2,021,222
  Chesapeake Corp.                                        BAA-3/BBB       7.200       Mar 15, 2005       1,000,000       1,033,652
  International Paper                                     A-3/A-          7.875       Aug 01, 2006       1,000,000       1,090,264
  Kimberly-Clark Corp.                                    AA-2/AA         9.000       Aug 01, 2000         600,000         642,575
  Scott Paper-Defeased                                    NR             10.000       Mar 01, 2002         500,000         570,887
                                                                                                                         ---------
     Forest Products/Paper total                                                                                        10,484,176

Investment Banking/Brokerage:                9.5%
  Bear Stearns                                            A-2/A           6.750       Apr 15, 2003       1,000,000       1,012,050
  Dean Witter Discover                                    A-1/A+          6.750       Oct 15, 2013       2,500,000       2,499,783
  Dean Witter Discover                                    A-1/A+          6.300       Jan 15, 2006       1,000,000         983,941
  Donaldson, Lufkin, Jenrette, Inc.                       A-3/A-          6.875       Nov 01, 2005         700,000         710,706
  Donaldson, Lufkin, Jenrette, Inc.                       A-3/A-          5.625       Feb 15, 2016       2,480,000       2,451,311
  Lehman Brothers Holdings                                BAA-1/A         7.125       Sep 15, 2003       1,000,000       1,027,365
  Lehman Brothers Holdings                                BAA-1/A         6.306       Sep 10, 2001       1,000,000         998,551
  Merrill Lynch & Co.,  Inc.                              AA-3/AA-        6.250       Jan 15, 2006         350,000         344,583
  Paine Webber Group                                      BAA-1/BBB+      6.750       Feb 01, 2006         700,000         703,480
  Paine Webber Inc.                                       BAA-1/BBB+      7.875       Feb 15, 2003       1,000,000       1,058,878
  Salomon Inc.                                            A-2/A           7.125       Aug 01, 1999         500,000         507,790
  Salomon Inc.                                            A-2/A           7.200       Feb 01, 2004       3,500,000       3,624,621
  Salomon Inc.                                            A-2/A           7.500       Feb 01, 2003       2,000,000       2,098,524
                                                                                                                         ---------
     Investment Banking/Brokerage total                                                                                 18,021,583

Finance Co. - Consumer Loans:                1.0%
  Household Finance Co.                                   A-2/A           7.125       Sep 01, 2005       1,735,000       1,797,450
                                                                                                                         ---------

Finance/Insurance:                           0.4%
  Equitable Life Assurance                                A-2/A           6.950       Dec 01, 2005         792,000         807,615
                                                                                                                         ---------

Finance - Diversified:                       2.5%
  Ameritech Capital                                       AA-3/AA+        7.500       Apr 01, 2005       2,000,000       2,147,254
  Dow Capital                                             A-1/A           7.125       Jan 15, 2003         900,000         933,765
  General Motors Acceptance Corporation                   A-3             6.450       Apr 15, 1999       1,045,000       1,049,642
  U.S. West Capital Funding                               BAA-1/BBB+      6.750       Oct 01, 2005         500,000         504,267
                                                                                                                         ---------
     Finance - Diversified total                                                                                         4,634,928


</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                   BOND FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BOND FUND INVESTMENTS,                       % Net        Quality        Coupon         Maturity             Par
CONTINUED:                                  Assets        Rating*         Rate            Date             Amount            Value
                                            ------        -------         ----            ----             ------            -----
<S>                                      <C>           <C>            <C>          <C>               <C>             <C>
Mortgage Related Securities:                 0.2%
  Prudential Home Funding                                 AAA             6.050       Apr 25, 2024        $500,000        $466,310
                                                                                                                         ---------

Drugs/Health Care:                           0.3%
  American Home Products                                  A-2/A           7.700       Feb 15, 2000         530,000         547,070
                                                                                                                         ---------

Hospital Management/Supplies                 0.2%
  Columbia/HCA Healthcare Corporation                     BAA-2/BBB       6.910       Jun 15, 2005         300,000         293,477
                                                                                                                         ---------

Media:                                       0.1%
  McGraw-Hill, Inc.                                       A-1             9.430       Sep  1, 2000         100,000         107,695
                                                                                                                         ---------

Publishing-News:                             0.3%
  Knight Ridder                                           A-3/A           8.500       Sep 01, 2001         530,000         550,071
                                                                                                                         ---------

Beverage/Confect/Tobacco:                    0.3%
  J Seagram & Sons                                        A-2/A           9.650       Aug 15, 2018         500,000         657,175
                                                                                                                         ---------

Retail-Department:                           0.3%
  Dayton Hudson Corp.                                     BAA-1/BBB+      9.750       Nov 01, 1998         250,000         257,063
  Dayton Hudson Corp.                                     BAA-1/BBB+      7.250       Sep 01, 2004         310,000         323,014
                                                                                                                         ---------
     Retail-Department total                                                                                               580,077

Auto-Related:                                2.7%
  Ford Motor Co.                                          A-1/A           7.500       Nov 15, 1999       1,500,000       1,537,658
  Ford Motor Co.                                          A-1/A           7.250       Oct 01, 2008       1,000,000       1,063,818
  Ford Motor Co.                                          A-1/A           8.875       Apr 01, 2006         500,000         577,576
  General Motors Corp.                                    A-3/A-          7.000       Jun 15, 2003         745,000         771,635
  Hertz Corp                                              A-3/BBB+        9.000       Nov 01, 2009       1,000,000       1,226,303
                                                                                                                         ---------
     Auto-Related total                                                                                                  5,176,990

Hotel & Motel:                               0.3%
  Marriott International, Inc.                            BAA-1/BBB+      7.125       Jun 01, 2007         500,000         521,573
                                                                                                                         ---------

Electronics:                                 2.0%
  Motorola Inc.                                           AA-3/AA         6.500       Sep 01, 2025       1,975,000       2,059,275
  Xerox Corporation                                       A-2/A           7.150       Aug 01, 2004       1,700,000       1,780,553
                                                                                                                         ---------
     Electronics total                                                                                                   3,839,828

Aerospace/Defense:                           0.9%
  Lockheed Martin                                         A-3/BBB+        6.850       May 15, 2001         750,000         762,525
  Lockheed Corp                                           A-3/BBB+        9.375       Oct 15, 1999         500,000         527,410
  Raytheon Co.                                            BAA-1/BBB       6.500       Jul 15, 2005         500,000         503,189
                                                                                                                         ---------
     Aerospace/Defense total                                                                                             1,793,124

Electric Household Appliance:                0.4%
  Maytag Corporation                                      BAA-1/BBB+      9.750       May 15, 2002         600,000         677,132
                                                                                                                         ---------

Engineering/Construction Services:           0.9%
  Foster Wheeler Corp.                                    BAA-2/BBB       6.750       Nov 15, 2005       1,710,000       1,718,723
                                                                                                                         ---------

Machine Tools:                               1.5%
  Giddings & Lewis                                        BA-1            7.500       Oct 01, 2005       2,500,000       2,609,870
  Ingersoll Rand Company                                  A-3/A-          6.480       Jun 01, 2025         300,000         308,304
                                                                                                                         ---------
     Machine Tools total                                                                                                 2,918,174


</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                   BOND FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BOND FUND INVESTMENTS,                       % Net        Quality        Coupon         Maturity             Par
CONTINUED:                                  Assets        Rating*         Rate            Date             Amount            Value
                                            ------        -------         ----            ----             ------            -----
<S>                                      <C>           <C>            <C>          <C>               <C>             <C>
Oil/Oil Service:                             4.7%
  Baroid Corp                                             AA-3/A          8.000       Apr 15, 2003         $58,000         $62,645
  Coastal Corp                                            BAA-3/BBB-     10.250       Oct 15, 2004       1,000,000       1,201,620
  Enron Corp.                                             BAA-2/BBB+      7.625       Sep 10, 2004       1,500,000       1,591,392
  Enron Corp.                                             BAA-2/BBB+      6.875       Oct 15, 2007       1,500,000       1,526,691
  Lyondell Petrochem                                      BAA-3/BBB-     10.000       Jun 01, 1999         500,000         524,766
  Occidental Peto Bond                                    BAA-2/BBB       9.250       Aug 01, 2019       1,000,000       1,276,388
  Union Oil Co. of California                             BAA-1/BBB+      7.200       May 15, 2005       1,400,000       1,461,712
  Union Oil Co. of California                             BAA-1/BBB+      9.125       Feb 15, 2006       1,000,000       1,169,650
                                                                                                                         ---------
     Oil/Oil Service total                                                                                               8,814,864

Containers:                                  0.5%
  Bemis Co., Inc.                                         A-2/A           6.700       Jul 01, 2005       1,010,000       1,028,088
                                                                                                                         ---------

Chemicals:                                   1.8%
  Union Carbide Corporation                               BAA-2/BBB       6.790       Jun 01, 2025       3,300,000       3,421,849
                                                                                                                         ---------

Transportation:                              7.1%
  American Airlines                                       A-3/BBB         8.040       Sep 16, 2011       2,000,000       2,155,560
  Burlington Northern, Inc.                               BAA-2/BBB       7.400       May 15, 1999         200,000         203,504
  CSX Corp                                                BAA-2/BBB       9.000       Aug 15, 2006       1,800,000       2,086,528
  Delta Air Lines                                         BAA-1/BBB       8.540       Jan 02, 2007         292,674         315,307
  Federal Express                                         A-3/BBB+        7.850       Jan 30, 2015       3,441,617       3,749,711
  Golden State Petroleum Transport                        Ba1/BBB-        8.040       Feb 01, 2019       4,000,000       4,286,856
  Southwest Airlines                                      A-1/A           8.700       Jul 01, 2011          19,455          22,374
  United Airlines                                         Baa-1/BBB       9.020       Apr 19, 2012         462,541         534,813
                                                                                                                         ---------
     Transportation total                                                                                               13,354,653

Railroad Equipment:                          0.2%
  Union Pacific RR                                        Aa-3/A          6.540       Jul 01, 2015         434,739         438,674
                                                                                                                         ---------

Utilities-Telephone:                         4.7%
  BellSouth Telecommunications, Inc.                      AAA/AAA         6.500       Jun 15, 2005         150,000         153,037
  BellSouth Telecommunications, Inc.                      AAA/AAA         6.250       May 15, 2003       1,500,000       1,513,880
  Carolina T&T                                            AA-3/A+         5.750       Aug 15, 2000       1,000,000         992,849
  GTE Corporation                                         BAA-1/A         9.100       Jun 01, 2003       1,000,000       1,125,155
  GTE Corporation                                         BAA-1/A         9.375       Dec 01, 2000         500,000         541,604
  GTE North, Inc.                                         A-1/AA-         6.000       Jan 15, 2004       4,000,000       3,956,208
  Northwestern Bell Telephone Co.                         AA-3/A          9.500       May 01, 2000         600,000         645,044
  Pacific NW Bell Telephone                               AA-3/A          4.375       Sep 01, 2002          35,000          32,503
                                                                                                                         ---------
     Utilities-Telephone total                                                                                           8,960,280

Utilities-Electric:                          5.4%
  Cincinnati Gas & Electric                               A-3/A-          5.800       Feb 15, 1999       1,000,000         997,403
  Commonwealth Edison                                     BAA-2/BBB       7.000       Jul 01, 2005       1,000,000       1,024,427
  Consolidated Edison of New York                         A-1/A+          6.250       Apr 01, 1998         200,000         200,148
  Florida Power                                           A-1             6.720       Jul 01, 2005       2,000,000       2,033,606
  Midwest Power Systems                                   A-2/AA-         7.125       Feb 01, 2003         150,000         156,069
  Niagara Mohawk Power                                    BA-3/BB+        9.250       Oct 01, 2001         500,000         538,008
  Pacificorp                                              A-2/A           6.750       Apr 01, 2005         250,000         255,477
  System Energy Resourses                                 BAA-3/BBB-      7.625       Apr 01, 1999         762,000         775,709
  Wisconsin Power & Light                                 AA-2/AA         7.600       Jul 01, 2005       2,000,000       2,145,968
  Wisconsin Public Service, Inc.                          AA-2/AA+        7.300       Oct 01, 2002       2,000,000       2,101,438
                                                                                                                         ---------
     Utilities-Electric total                                                                                           10,228,253

Utilities-Natural Gas Pipeline:              2.6%
  Burlington Resources, Inc.                              A-3/A-          9.625       Jun 15, 2000         100,000         107,885
  Consolidated Natural Gas                                A-1/AA-         5.875       Oct 01, 1998          50,000          50,014
  El Paso Natural Gas                                     Baa-2/BBB       9.450       Sep 01, 1999         500,000         525,357
  Michigan Consolidated Gas                               A-2/A           8.000       May 01, 2002       2,000,000       2,133,026
  Michigan Consolidated Gas                               A-2/A           5.750       May 01, 2001       1,000,000         989,266
  Southwestern Energy                                     BAA-2/BBB+      6.700       Dec 01, 2005       1,000,000       1,016,697
                                                                                                                         ---------
     Utilities-Natural Gas Pipeline total                                                                                4,822,245
</TABLE>
<PAGE>
<TABLE>
<CAPTION>

                                                   BOND FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


BOND FUND INVESTMENTS,                       % Net        Quality        Coupon         Maturity             Par
CONTINUED:                                  Assets        Rating*         Rate            Date             Amount            Value
                                            ------        -------         ----            ----             ------            -----
<S>                                      <C>           <C>            <C>          <C>               <C>             <C>
Diversified Companies:                       0.1%
  Whitman Corporation                                     BAA-2/BBB+      7.500       Feb 01, 2003         100,000         105,178
                                                                                                                         ---------

     TOTAL U.S. CORPORATE BONDS
     (COST: $106,058,517)                                                                                             $106,767,256
                                                                                                                       -----------

Non - U.S. Corporate Bonds:                  3.3%
  BHP Finance, Inc.                                       A-2/A           6.420       Mar 01, 2026      $2,000,000      $1,998,054
  Falconbridge Ltd.                                       BAA-2/BBB+      7.350       Nov 01, 2006       2,000,000       2,104,272
  Hanson Overseas                                         A-3/A-          6.750       Sep 15, 2005       2,000,000       2,047,842
                                                                                                                         ---------
     TOTAL NON -  U.S. CORPORATE BONDS
     (COST: $6,164,058)                                                                                                 $6,150,168
                                                                                                                         ---------

     TOTAL INVESTMENTS, BOND SERIES
     (COST: $185,177,448)**                                                                                           $185,599,118
                                                                                                                       ===========

See accompanying notes to investments in securities.
<FN>
    *Moody's/Standard  & Poors'  quality  ratings  (unaudited).  See the current
Prospectus and Statement of Additional Information for a complete description of
these ratings.

  **At December 31, 1997, the cost of securities for federal income tax purposes
was  $185,177,448.  The aggregate  unrealized  appreciation  and depreciation of
investments in securities based on this cost were:

Gross unrealized appreciation.................................$1,093,246
Gross unrealized depreciation...................................(671,576)
                                                                --------
Net unrealized depreciation.................................... $421,670
                                                                ========

***This  security  provides a claim on the interest  component of the underlying
mortgages,  but not on their principal  component.  That is, the security's cash
flows  depend on the amount of principal  outstanding  at the payment  date.  If
prepayments on the underlying  mortgages are higher than expected,  the yield on
the security may be adversely affected.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                               MONEY MARKET FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


                                             % Net        Quality      Annualized       Maturity             Par
MONEY MARKET FUND INVESTMENTS:              Assets        Rating*         Yield           Date             Amount            Value
                                            ------        -------         -----           ----             ------            -----
<S>                                      <C>           <C>            <C>          <C>               <C>             <C>
Short-Term Investments:
Commercial Paper/Savings:                    68.0%
  Anheuser Busch Companies                                A-1/P-1         5.76%       Jan 22, 1998       $2,100,000      $2,093,092
  Associates Corp NA                                      A-1+/P-1        5.88%       Jan 29, 1998       2,000,000       1,991,071
  Bell South Telecom Inc.                                 A-1+/P-1        5.28%       Jan 13, 1998       2,000,000       1,996,250
  Caterpillar Inc                                         A-1/P-1         5.78%       Feb 17, 1998       2,000,000       1,991,148
  CIT Group Holdings                                      A-1/P-1         5.71%       Feb 03, 1998       2,000,000       1,989,825
  Coca-Cola Co.                                           A-1+/P-1        5.65%       Feb 02 ,1998       2,100,000       2,089,733
  Consolidated Natural Gas                                A-1+/P-1        6.30%       Jan 07, 1998         369,000         368,619
  Ford Motor Credit Company                               A-1/P-1         5.82%       Feb 10, 1998       2,000,000       1,987,415
  General Electric Capital Corporation                    A-1+/P-1        5.75%       Jan 06, 1998       2,100,000       2,098,362
  General Mills                                           A-1/P-1         5.74%       Jan 02, 1998       1,350,000       1,349,789
  Interstate Power Co.                                    A-1/P-1         5.90%       Jan 26, 1998       1,000,000         995,993
  Interstate Power Co.                                    A-1/P-1         5.88%       Jan 27, 1998       1,000,000         995,847
  John Deere Capital Credit                               A-1/P-1         5.78%       Jan 23, 1998       2,000,000       1,993,107
  Madison Gas & Electric                                  A-1+/P-1        5.88%       Jan 12, 1998       1,000,000         998,237
  Merrill Lynch & Co Inc                                  A-1+/P-1        5.72%       Jan 08, 1998         900,000         900,000
  Morgan Stanley, Dean Witter, Discover
      and Co.                                             A-1/P-1         5.76%       Jan 22, 1998       1,200,000       1,196,080
  Northern Illinois Gas Co                                A-1+/P-1        5.85%       Jan 23, 1998       1,800,000       1,793,675
  Walt Disney Company                                     A-1/P-1         5.63%       Jan 02, 1998       1,100,000       1,099,832
  State Street Bank & Trust                                               5.25%                             56,342          56,342
                                                                                                                        ----------
     TOTAL COMMERCIAL PAPER/
     SAVINGS, AT COST                                                                                                  $27,984,417
                                                                                                                        ----------

Quasi-Government/Government Sponsored:       21.5%
  Federal Home Loan Discount Notes                                        5.78%       Jan 02, 1998      $1,500,000      $1,498,115
  Federal Home Loan Discount Notes                                        5.65%       Jan 12, 1998       2,805,000       2,800,165
  FNMA Discount Notes                                                     5.86%       Jan 20, 1998       2,321,000       2,316,600
  FNMA Discount Notes                                                     5.62%       Jan 16, 1998       1,055,000       1,052,613
  Federal Farm Credit Discount Notes                                      5.62%       Jan 21, 1998       1,200,000       1,196,340
                                                                                                                        ----------
     TOTAL QUASI-GOVERNMENT/GOVERNMENT
     SPONSORED, AT COST                                                                                                 $8,863,833
                                                                                                                        ----------

Government Guaranteed:                       10.6%
  U. S. Treasury Bill                                                     4.97%       Feb 05, 1998      $4,450,000      $4,344,277
                                                                                                                        ----------

     TOTAL INVESTMENTS, MONEY MARKET
     FUND, AT COST                                                                                                     $41,192,527
                                                                                                                        ==========

See accompanying notes to investments in securities.
<FN>
*Moody's/Standard  &  Poors'  quality  ratings  (unaudited).   See  the  current
Prospectus and Statement of Additional Information for a complete description of
these ratings.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                              TREASURY 2000 FUND OF ULTRA SERIES FUND
                                               Investments in Securities (Continued)
                                                         December 31, 1997


                                                   % of            Interest         Maturity          Principal
TREASURY 2000 FUND INVESTMENTS:                 Net Assets           Rate             Date             Amount              Value
                                                ----------           ----             ----             ------              -----
<S>                                       <C>                   <C>             <C>              <C>                <C>      
Government Guaranteed - U.S.:
   U.S. Treasury Strip (Cost $1,502,323)*         100.0%             9.69%         Nov 15, 2000     $2,000,000         $1,701,374
                                                                                                                        =========
</TABLE>
See accompanying notes to investments in securities.

Notes to investments in securities:
Interest rates on and stripped Treasury Securities represent annualized yield to
maturity at date of purchase.  Values of investment securities are determined as
described in Note 2 of the financial statements.
[FN]
*At December 31, 1997,  the cost of securities  for federal  income tax purposes
was  $1,502,323.  The aggregate  unrealized  appreciation  and  depreciation  of
investments in securities based on this cost were:
Gross unrealized appreciation..................................... $199,050
Gross unrealized depreciation................................            --
                                                                   --------
Net unrealized appreciation....................................... $199,050
                                                                   ========
</FN>
<PAGE>
<TABLE>
<CAPTION>


                                                         ULTRA SERIES FUND
                                                      Statement of Operations
                                                    Year Ended December 31, 1997



                                            Capital      Growth and                                       Money        Treasury
                                         Appreciation   Income Stock     Balanced          Bond          Market          2000
                                          Stock Fund        Fund           Fund            Fund           Fund           Fund
Investment income (note 2):
<S>                                 <C>            <C>             <C>            <C>             <C>               <C>
  Interest income                         $451,972       $881,021      $9,624,772     $3,320,834     $1,621,455        $114,238

  Dividend income                        1,854,993      6,473,882       1,727,637             --             --              --
                                        ----------     ----------      ----------      ---------      ---------        --------
    Total income                         2,306,965      7,354,903      11,352,409      3,320,834      1,621,455         114,238
                                        ----------     ----------      ----------      ---------      ---------        --------
Expenses (note 4):

  Advisory fees                          1,194,672      2,108,616       1,627,496        248,008        134,513              --

  Advisory/Administrative fees                  --             --              --             --             --           7,325

  Accounting and custodian fees             18,100         37,708          30,955          6,462          5,387              --

  Trustees' fees                             2,203          5,276           4,030            641            493              23

  Registration fees                         19,125         45,350          36,131          5,394          4,550              --

  Legal fees                                 4,858         11,521           9,179          1,370          1,156              --

  Audit fees                                 5,711         13,634          10,888          1,654          1,351              39

  Printing and mailing fees                  8,245         19,550          15,576          2,325          1,962              --

  Other expenses                             3,760          8,916           7,104          1,061            895              --
                                        ----------     ----------      ----------      ---------      ---------        --------
  Expenses before reimbursement          1,256,674      2,250,571       1,741,359        266,915        150,307           7,387
  Reimbursable expenses from
  CUNA Mutual Life Insurance Company        (8,943)       (16,291)        (12,966)        (4,363)        (4,095)             --
                                        ----------     ----------      ----------      ---------      ---------        --------
    Total net expenses                   1,247,731      2,234,280       1,728,393        262,552        146,212           7,387
                                        ----------     ----------      ----------      ---------      ---------        --------
   Net investment income                 1,059,234      5,120,623       9,624,016      3,058,282      1,475,243         106,851
                                        ----------     ----------      ----------      ---------      ---------        --------
</TABLE>
Realized and unrealized gain (loss) on investments (notes 2 and 3):
<TABLE>
<CAPTION>

  Realized gain (loss) on security transactions:
<S>                                 <C>            <C>             <C>            <C>             <C>               <C>

   Proceeds from sale of securities 
    and principal pay downs             29,124,058     76,016,996      56,037,257     15,142,309      4,961,839              --

   Cost of securities sold             (23,606,820)   (66,517,987)    (52,244,642)   (15,119,915)    (4,961,839)             --
                                        ----------     ----------      ----------      ---------      ---------        --------
   Net realized gain (loss) on 
    security transactions                5,517,238      9,499,009       3,792,615         22,394             --              --

  Net change in unrealized 
   appreciation or depreciation 
   on investments                       40,907,564     84,642,706      25,504,114        326,623             --           1,846
                                        ----------     ----------      ----------      ---------      ---------        --------
  Net gain (loss) on investments        46,424,802     94,141,715      29,296,729        349,017             --           1,846
                                        ----------     ----------      ----------      ---------      ---------        --------


  Net increase in net assets
   resulting from operations           $47,484,036    $99,262,338     $38,920,745     $3,407,299     $1,475,243        $108,697
                                        ==========     ==========      ==========      =========      =========        ========


See accompanying notes to financial statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                         ULTRA SERIES FUND
                                                 Statement of Changes in Net Assets
                                               Years Ended December 31, 1997 and 1996



                                                   CAPITAL APPRECIATION               GROWTH AND INCOME
                                                        STOCK FUND                       STOCK FUND              BALANCED FUND
Operations:                                       1997           1996           1997          1996            1997          1996
                                                  ----           ----           ----          ----            ----          ---- 
<S>                                     <C>              <C>           <C>            <C>            <C>             <C>
  Net investment income                      $1,059,234       $646,279     $5,120,623     $2,863,311     $9,624,016     $5,922,093

  Net realized gain (loss) on security
   transaction                                5,517,238      3,152,749      9,499,009      5,656,957      3,792,615      4,268,803

  Net change in unrealized appreciation
   or depreciation on investments            40,907,564      9,688,795     84,642,706     26,520,015     25,504,114      6,612,755
                                            -----------     ----------    -----------    -----------    -----------    -----------
   Change in net assets from
    operations                               47,484,036     13,487,823     99,262,338     35,040,283     38,920,745     16,803,651
                                            -----------     ----------    -----------    -----------    -----------    -----------


Distributions to shareholders:

  From net investment income                 (1,065,876)      (639,086)    (5,180,495)    (2,804,744)    (9,668,911)    (5,850,662)

  From realized gains on investments         (5,541,711)    (3,084,815)    (9,518,672)    (5,675,210)    (3,841,952)    (4,393,033)

  Return of capital                             (43,461)            --       (118,470)            --             --             --
                                             -----------     ----------    -----------    -----------    -----------    -----------
   Change in net assets from
    distributions                            (6,651,048)    (3,723,901)   (14,817,637)    (8,479,954)   (13,510,863)   (10,243,695)
                                             -----------     ----------    -----------    -----------    -----------    -----------

Class Z Share transactions (note 5):

  Proceeds from sale of shares              311,778,406     48,543,686    260,073,329     99,870,808     80,187,804     70,374,669

  Net asset value of shares issued in
   reinvestment of distributions              6,651,048      3,723,901     14,817,637      8,479,954     13,510,863     10,243,695
                                            -----------     ----------    -----------    -----------    -----------    -----------
                                            318,429,454     52,267,587    274,890,966    108,350,762     93,698,667     80,618,364

  Cost of shares repurchased                 (1,742,040)    (1,475,008)    (2,041,007)    (4,208,480)    (4,029,711)    (3,422,404)
                                            -----------     ----------    -----------    -----------    -----------    -----------
   Change in net assets derived from
    capital share transactions              316,687,414     50,792,579    272,849,959    104,142,282     89,668,956     77,195,960
                                            -----------     ----------    -----------    -----------    -----------    -----------
Increase in net assets                      357,520,402     60,556,501    357,294,660    130,702,611    115,078,838     83,755,916

Net assets:

  Beginning of year                          98,673,833     38,117,332    232,840,773    102,138,162    194,724,874    110,968,958
                                            -----------     ----------    -----------    -----------    -----------    -----------
  End of year                              $456,194,235    $98,673,833   $590,135,433   $232,840,773   $309,803,712   $194,724,874
                                            ===========     ==========    ===========    ===========    ===========    ===========
Undistributed net investment
  income included in net assets                      --        $14,253             --        $69,558        $49,986        $94,881
                                            ===========     ==========    ===========    ===========    ===========    ===========


See accompanying notes to financial statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                         ULTRA SERIES FUND
                                           Statement of Changes in Net Assets (Continued)
                                               Years Ended December 31, 1997 and 1996



                                                 BOND FUND                    MONEY MARKET FUND               TREASURY 2000 FUND
Operations:                                   1997           1996           1997          1996            1997          1996
                                              ----           ----           ----          ----            ----          ---- 
<S>                                     <C>           <C>            <C>             <C>            <C>            <C>
  Net investment income                    $3,058,282     $1,251,976     $1,475,243       $836,930       $106,851       $107,928

  Net realized gain (loss) on security
   transactions                                22,394         49,716             --             --             --             --

  Net change in unrealized appreciation
   or depreciation on investments             326,623       (477,126)            --             --          1,846        (75,534)
                                           ----------     ----------     ----------     ----------     ----------     ----------
   Change in net assets from
    operations                              3,407,299        824,566      1,475,243        836,930        108,697         32,394
                                          -----------     ----------     ----------     ----------     ----------     ----------
Distributions to shareholders:

  From net investment income               (3,013,977)    (1,238,292)    (1,475,243)      (836,930)            --             --

  From realized gains on investments          (22,394)       (49,716)            --             --             --             --

  Return of capital                                --             --             --             --             --             --
                                          -----------     ----------     ----------     ----------     ----------     ----------
   Change in net assets from
    distributions                          (3,036,371)    (1,288,008)    (1,475,243)      (836,930)            --             --
                                          -----------     ----------     ----------     ----------     ----------     ----------
Class Z Share transactions (note 5):

  Proceeds from sale of shares            160,361,652     13,819,369     57,328,276     32,934,173          7,239          7,020

  Net asset value of shares issued in
   reinvestment of distributions            3,036,371      1,288,008      1,473,088        835,642             --             --
                                          -----------     ----------     ----------     ----------     ----------     ----------
                                          163,398,023     15,107,377     58,801,364     33,769,815          7,239          7,020

  Cost of shares repurchased               (1,501,306)    (1,796,780)   (38,642,199)   (24,132,957)            --             --
                                          -----------     ----------     ----------     ----------     ----------     ----------


   Change in net assets derived from
    capital share transactions            161,896,717     13,310,597     20,159,165      9,636,858          7,239          7,020
                                          -----------     ----------     ----------     ----------     ----------     ----------
Increase (decrease) in net assets         162,267,645    12,847,155      20,159,165      9,636,858        115,936         39,414

Net assets:

  Beginning of year                        26,571,923     13,724,768     21,010,987     11,374,129      1,584,741      1,545,327
                                          -----------     ----------     ----------     ----------     ----------     ----------
  End of year                            $188,839,568    $26,571,923    $41,170,152    $21,010,987     $1,700,677     $1,584,741
                                          ===========     ==========     ==========     ==========     ==========     ==========

Undistributed net investment
  income included in net assets               $62,339        $18,034             --             --             --             --
                                          ===========     ==========     ==========     ==========     ==========     ==========


See accompanying notes to financial statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                        CAPITAL APPRECIATION STOCK FUND OF ULTRA SERIES FUND
                                                        Financial Highlights
                                                       Year Ended December 31



                                                ------------------------- CAPITAL APPRECIATION STOCK FUND -------------------------
(For a share outstanding throughout the period):   1997              1996             1995              1994
                                                   ----              ----             ----              ----
<S>                                         <C>               <C>               <C>               <C>    
Net Asset Value, Beginning of Period             $14.60            $12.51            $9.97            $10.00
                                                 ------            ------           ------            ------

  Income from Investment Operations

   Net Investment Income                           0.07              0.13             0.14              0.16

   Net Realized and Unrealized Gain (Loss)
    on Investments                                 4.52              2.55             2.91              0.37
                                                 ------            ------           ------            ------

  Total from Investment Operations                 4.59              2.68             3.05              0.53
                                                -------------------------------------------------------------

  Distributions

   Distributions from Net Investment Income       (0.07)            (0.13)           (0.14)            (0.15)

   Distributions from Realized Capital Gains      (0.27)            (0.46)           (0.37)            (0.41)
                                                 ------            ------           ------            ------

  Total Distributions                             (0.34)            (0.59)           (0.51)            (0.56)
                                                -------------------------------------------------------------

Net Asset Value, End of Period                   $18.85            $14.60           $12.51             $9.97
====================================================================================================================================

Total Return*                                    31.57%            21.44%           30.75%             5.44%
====================================================================================================================================

Ratio/Supplemental Data

Net Assets, End of Period (000s Omitted)        $456,194           $98,674          $38,117            $9,449

Ratio of Expenses to Average Net Assets**          0.82%             0.65%            0.65%             0.65%

Ratio of Net Investment Income to Average
  Net Assets                                       0.70%             0.96%            1.37%             1.55%

Portfolio Turnover Rate                           17.06%            49.77%           61.32%            65.81%

Average Commission Rate                            $0.06             $0.06            $0.06
====================================================================================================================================
<FN>
  *These  returns  are after all  charges  at the  mutual  fund  level have been
   subtracted. These returns are higher than the returns at the separate account
   level  because  charges  made at the  separate  account  level  have not been
   subtracted.

** During the periods  shown,  prior to May 1, 1997,  CUNA Mutual Life Insurance
   Company and its affiliates  absorbed  certain  expenses under the terms of an
   Expense Reimbursement Agreement between the Ultra Series Fund and CUNA Mutual
   Life Insurance Company. If the Expense  Reimbursement  Agreement had not been
   in effect and if the full expenses  allowable  under the Investment  Advisory
   Agreement  between the Ultra Series Fund and the Investment  Adviser had been
   charged,  the  resulting  ratio of expenses to average net assets  would have
   been  0.83%,  0.66%,  0.75%,  and  0.85%,  for 1997,  1996,  1995,  and 1994,
   respectively.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                         GROWTH AND INCOME STOCK FUND OF ULTRA SERIES FUND
                                                        Financial Highlights
                                                       Year Ended December 31



                                                ------------------------- GROWTH AND INCOME STOCK FUND ---------------------------
(For a share outstanding throughout the period):   1997              1996             1995              1994             1993
                                                   ----              ----             ----              ----             ----     
<S>                                         <C>               <C>               <C>               <C>             <C>
Net Asset Value, Beginning of Period             $21.32            $18.20           $15.06            $15.51           $15.49
                                                 ------            ------           ------            ------            ------

Income from Investment Operations

Net Investment Income                              0.31              0.34             0.37              0.32             0.29

Net Realized and Unrealized Gain (Loss)
on Investments                                     6.36              3.93             4.37             (0.04)            1.87
                                                  -----             -----            -----             -----             -----

Total from Investment Operations                   6.67              4.27             4.74              0.28             2.16
                                               -----------------------------------------------------------------------------------

  Distributions

   Distributions from Net Investment Income       (0.32)            (0.34)           (0.37)            (0.32)           (0.29)

   Distributions from Realized Capital Gains      (0.47)            (0.81)           (1.23)            (0.40)           (1.85)
                                                  -----             -----            -----             -----             -----

  Total Distributions                             (0.79)            (1.15)           (1.60)            (0.73)           (2.14)
                                               -----------------------------------------------------------------------------------

Net Asset Value, End of Period                   $27.20            $21.32           $18.20            $15.06           $15.51
====================================================================================================================================

Total Return*                                    31.42%            22.02%           31.75%             1.42%            13.77%
====================================================================================================================================

Ratio/Supplemental Data

Net Assets, End of Period (000s Omitted)        $590,135          $232,841         $102,138           $48,913           $32,468

Ratio of Expenses to Average Net Assets**          0.61%             0.65%            0.65%             0.65%            0.65%

Ratio of Net Investment Income to Average
  Net Assets                                       1.39%             1.78%            2.28%             2.19%            1.84%

Portfolio Turnover Rate                           20.39%            40.55%           57.80%            45.36%           56.79%

Average Commission Rate                            $0.06             $0.06            $0.06
====================================================================================================================================
<FN>

  *These  returns  are after all  charges  at the  mutual  fund  level have been
   subtracted. These returns are higher than the returns at the separate account
   level  because  charges  made at the  separate  account  level  have not been
   subtracted.

** During the periods  shown,  prior to May 1, 1997,  CUNA Mutual Life Insurance
   Company and its affiliates  absorbed  certain  expenses under the terms of an
   Expense Reimbursement Agreement between the Ultra Series Fund and CUNA Mutual
   Life Insurance Company. If the Expense  Reimbursement  Agreement had not been
   in effect and if the full expenses  allowable  under the Investment  Advisory
   Agreement  between the Ultra Series Fund and the Investment  Adviser had been
   charged,  the  resulting  ratio of expenses to average net assets  would have
   been 0.61%,  0.65%,  0.69%, 0.70%, and 0.73%, for 1997, 1996, 1995, 1994, and
   1993, respectively.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                 BALANCED FUND OF ULTRA SERIES FUND
                                                        Financial Highlights
                                                       Year Ended December 31



                                                -------------------------------- BALANCED FUND ------------------------------
(For a share outstanding throughout the period):   1997              1996             1995              1994             1993
                                                   ----              ----             ----              ----             ----
<S>                                         <C>               <C>               <C>               <C>              <C> 

Net Asset Value, Beginning of Period             $15.29            $14.63           $12.90            $13.70           $13.54
                                                 ------            ------           ------            ------            -----

  Income from Investment Operations

   Net Investment Income                           0.62              0.58             0.55              0.52             0.50

   Net Realized and Unrealized Gain (Loss)
    on Investments                                 1.93              0.98             2.29             (0.56)            0.95
                                                  -----             -----            -----             -----             ----

  Total from Investment Operations                 2.55              1.56             2.84             (0.04)            1.45
                                               ------------------------------------------------------------------------------

  Distributions

   Distributions from Net Investment Income       (0.63)            (0.58)           (0.55)            (0.51)           (0.50)

   Distributions from Realized Capital Gains      (0.19)            (0.32)           (0.56)            (0.25)           (0.79)
                                                  -----             -----            -----             -----             -----

  Total Distributions                             (0.82)            (0.90)           (1.11)            (0.76)           (1.29)
                                               -------------------------------------------------------------------------------------

Net Asset Value, End of Period                   $17.02            $15.29           $14.63            $12.90           $13.70
====================================================================================================================================

Total Return*                                    16.87%            10.79%           22.27%            -0.46%            10.47%
====================================================================================================================================

Ratio/Supplemental Data

Net Assets, End of Period (000s Omitted)        $309,804          $194,725         $110,969           $67,468           $54,363

Ratio of Expenses to Average Net Assets**          0.68%             0.65%            0.65%             0.65%            0.65%

Ratio of Net Investment Income to Average
  Net Assets                                       3.81%             3.91%            4.03%             4.00%            3.62%

Portfolio Turnover Rate                           21.15%            33.48%           36.68%            28.53%           28.71%

Average Commission Rate                            $0.06             $0.06            $0.06
====================================================================================================================================
<FN>

  *These  returns  are after all  charges  at the  mutual  fund  level have been
   subtracted. These returns are higher than the returns at the separate account
   level  because  charges  made at the  separate  account  level  have not been
   subtracted.

** During the periods  shown,  prior to May 1, 1997,  CUNA Mutual Life Insurance
   Company and its affiliates  absorbed  certain  expenses under the terms of an
   Expense Reimbursement Agreement between the Ultra Series Fund and CUNA Mutual
   Life Insurance Company. If the Expense  Reimbursement  Agreement had not been
   in effect and if the full expenses  allowable  under the Investment  Advisory
   Agreement  between the Ultra Series Fund and the Investment  Adviser had been
   charged,  the  resulting  ratio of expenses to average net assets  would have
   been 0.69%,  0.65%,  0.68%, 0.70%, and 0.74%, for 1997, 1996, 1995, 1994, and
   1993, respectively.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                                   BOND FUND OF ULTRA SERIES FUND
                                                        Financial Highlights
                                                       Year Ended December 31



                                                ------------------------------ BOND FUND ------------------------------------
(For a share outstanding throughout the period):   1997              1996             1995              1994             1993
                                                   ----              ----             ----              ----             ----
<S>                                         <C>               <C>               <C>               <C>              <C> 
Net Asset Value, Beginning of Period             $10.33            $10.63            $9.67            $10.58           $10.32
                                                 ------            ------           ------            ------            -----
  Income from Investment Operations

   Net Investment Income                           0.29              0.65             0.60              0.59             0.64

   Net Realized and Unrealized Gain (Loss)
    on Investments                                 0.45             (0.28)            0.96             (0.90)            0.28
                                                  -----             -----            -----             -----             ----

  Total from Investment Operations                 0.74              0.37             1.56             (0.31)            0.92
                                                -----------------------------------------------------------------------------

  Distributions

   Distributions from Net Investment Income       (0.51)            (0.64)           (0.59)            (0.59)           (0.65)

   Distributions from Realized Capital Gains      (0.02)            (0.03)           (0.01)            (0.01)           (0.01)
                                                  -----             -----            -----             -----             -----

  Total Distributions                             (0.53)            (0.67)           (0.60)            (0.60)           (0.66)
                                                ------------------------------------------------------------------------------

Net Asset Value, End of Period                   $10.54            $10.33           $10.63             $9.67           $10.58
- ------------------------------------------------------------------------------------------------------------------------------------

Total Return*                                     7.45%             2.86%           16.37%            -3.06%             8.87%
====================================================================================================================================

Ratio/Supplemental Data

Net Assets, End of Period (000s Omitted)        $188,840           $26,572          $13,725            $7,867            $6,297

Ratio of Expenses to Average Net Assets**          0.56%             0.65%             0.65%            0.65%             0.65%

Ratio of Net Investment Income to Average
  Net Assets                                       6.50%             6.25%             6.08%            6.03%             5.99%

Portfolio Turnover Rate                           30.71%            25.67%            14.74%           11.97%            12.23%
====================================================================================================================================
<FN>

  *These  returns  are after all  charges  at the  mutual  fund  level have been
   subtracted. These returns are higher than the returns at the separate account
   level  because  charges  made at the  separate  account  level  have not been
   subtracted.

** During the periods  shown,  prior to May 1, 1997,  CUNA Mutual Life Insurance
   Company and its affiliates  absorbed  certain  expenses under the terms of an
   Expense Reimbursement Agreement between the Ultra Series Fund and CUNA Mutual
   Life Insurance Company. If the Expense  Reimbursement  Agreement had not been
   in effect and if the full expenses  allowable  under the Investment  Advisory
   Agreement  between the Ultra Series Fund and the Investment  Adviser had been
   charged,  the  resulting  ratio of expenses to average net assets  would have
   been 0.57%,  0.67%,  0.68%, 0.70%, and 0.75%, for 1997, 1996, 1995, 1994, and
   1993, respectively.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                               MONEY MARKET FUND OF ULTRA SERIES FUND
                                                        Financial Highlights
                                                       Year Ended December 31



                                                ------------------------------ MONEY MARKET FUND ----------------------------
(For a share outstanding throughout the period):   1997              1996             1995              1994             1993
                                                   ----              ----             ----              ----             ----
<S>                                         <C>               <C>               <C>               <C>               <C> 
Net Asset Value, Beginning of Period              $1.00             $1.00            $1.00             $1.00            $1.00
                                                  -----             -----            -----             -----             ----
  Income from Investment Operations

   Net Investment Income                           0.05              0.05             0.05              0.03             0.03

   Net Realized and Unrealized Gain (Loss)
    on Investments                                 0.00              0.00             0.00              0.00             0.00
                                                  -----             -----            -----             -----             ----

  Total from Investment Operations                 0.05              0.05             0.05              0.03             0.03
                                                -----------------------------------------------------------------------------

  Distributions

   Distributions from Net Investment Income       (0.05)            (0.05)           (0.05)            (0.03)           (0.03)

   Distributions from Realized Capital Gains      (0.00)            (0.00)           (0.00)             0.00             0.00
                                                  -----             -----            -----             -----             -----

  Total Distributions                             (0.05)            (0.05)           (0.05)            (0.03)           (0.03)
                                                ------------------------------------------------------------------------------

Net Asset Value, End of Period                    $1.00             $1.00            $1.00             $1.00            $1.00
====================================================================================================================================

Total Return*                                     4.75%             5.17%            5.21%             3.34%             2.86%
====================================================================================================================================

Ratio/Supplemental Data

Net Assets, End of Period (000s Omitted)        $41,170           $21,011          $11,374            $7,799            $4,749

Ratio of Expenses to Average Net Assets**         0.50%             0.65%            0.65%             0.65%             0.65%

Ratio of Net Investment Income to Average
  Net Assets                                      5.05%             4.74%            5.17%             3.66%             2.43%

Portfolio Turnover Rate                             --                --               --                --                --
====================================================================================================================================
<FN>
For the Money  Market Fund,  the  "seven-day  average"  yield for the seven days
ended December 31, 1997, was 4.96% and the "effective" yield for that period was
5.09%.

  *These  returns  are after all  charges  at the  mutual  fund  level have been
   subtracted. These returns are higher than the returns at the separate account
   level  because  charges  made at the  separate  account  level  have not been
   subtracted.

** During the periods  shown,  prior to May 1, 1997,  CUNA Mutual Life Insurance
   Company and its affiliates  absorbed  certain  expenses under the terms of an
   Expense Reimbursement Agreement between the Ultra Series Fund and CUNA Mutual
   Life Insurance Company. If the Expense  Reimbursement  Agreement had not been
   in effect and if the full expenses  allowable  under the Investment  Advisory
   Agreement  between the Ultra Series Fund and the Investment  Adviser had been
   charged,  the  resulting  ratio of expenses to average net assets  would have
   been 0.51%,  0.67%,  0.73%,  0.78%, and 0.77% for 1997, 1996, 1995, 1994, and
   1993, respectively.
</FN>
</TABLE>
<PAGE>
<TABLE>
<CAPTION>


                                              TREASURY 2000 FUND OF ULTRA SERIES FUND
                                                        Financial Highlights
                                                       Year Ended December 31



                                                ------------------------------- TREASURY 2000 FUND ---------------------------
(For a share outstanding throughout the period)    1997              1996             1995              1994             1993
                                                   ----              ----             ----              ----             ----
<S>                                         <C>               <C>               <C>               <C>              <C> 
Net Asset Value, Beginning of Period              $8.64             $8.47            $7.00             $7.53            $6.53
                                                  -----             -----            -----             -----             ----

  Income from Investment Operations

   Net Investment Income                           0.58              0.58             0.58              0.53             0.48

   Net Realized and Unrealized Gain (Loss)
    on Investments                                 0.02             (0.41)            0.89             (1.06)            0.52
                                                  -----             -----            -----             -----             ----

  Total from Investment Operations                 0.60              0.17             1.47             (0.53)            1.00
                                                -----------------------------------------------------------------------------

  Distributions

   Distributions from Net Investment Income        0.00              0.00             0.00              0.00             0.00

   Distributions from Realized Capital Gains       0.00              0.00             0.00              0.00             0.00
                                                  -----             -----            -----             -----             ----

  Total Distributions                              0.00              0.00             0.00              0.00             0.00
                                                -----------------------------------------------------------------------------

Net Asset Value, End of Period                    $9.24             $8.64            $8.47             $7.00            $7.53
====================================================================================================================================

Total Return*                                     6.85%             2.10%           20.99%            -7.12%            15.43%
====================================================================================================================================

Ratio/Supplemental Data

Net Assets, End of Period (000s Omitted)         $1,701            $1,585           $1,545            $1,272            $1,363

Ratio of Expenses to Average Net Assets           0.45%             0.45%            0.45%             0.45%             0.45%

Ratio of Net Investment Income to Average
  Net Assets                                      6.56%             7.03%            7.40%             7.50%             6.69%

Portfolio Turnover Rate                             --                --               --                --                --
====================================================================================================================================
<FN>
  *These  returns  are after all  charges  at the  mutual  fund  level have been
   subtracted. These returns are higher than the returns at the separate account
   level  because  charges  made at the  separate  account  level  have not been
   subtracted.
</FN>
</TABLE>
<PAGE>


                                ULTRA SERIES FUND
                          Notes to Financial Statements

(1)  Description of the Fund

     The Ultra Series Fund (the "Fund"),  a  Massachusetts  Business  Trust,  is
     registered  under the Investment  Company Act of 1940 (the "1940 Act"),  as
     amended, as a diversified, open-end management investment company. The Fund
     is a series fund with six investment  portfolios  (the "funds"),  each with
     different investment  objectives and policies and each having available two
     separate  classes of common stock with a par value of $.01 per share.  Fund
     shares are sold and  redeemed  at a price  equal to the  shares'  net asset
     value  (note  2(b)).  The  assets of each fund are held  separate  from the
     assets of the other funds.

     Effective  May 1, 1997,  the shares of each fund were  divided into Class Z
     and Class C Shares.  Class Z Shares are  offered to all  insurance  company
     separate  accounts issued by, and all qualified  retirement plans sponsored
     by, CUNA Mutual Life  Insurance  Company or its  affiliates  ("CUNA  Mutual
     Life").  Class C Shares  are  offered to  separate  accounts  of  insurance
     companies other than CUNA Mutual Life, and to qualified retirement plans of
     companies not affiliated with the Fund or CUNA Mutual Life. Both classes of
     shares are  identical  in all respects  except that:  Class C Shares may be
     subject to a  distribution  fee (note 4);  each  class will have  exclusive
     voting rights with respect to matters that affect just that class; and each
     class will bear a  different  name or  designation.  All income  earned and
     expenses  incurred  by the  Fund  are  borne  on a  pro-rata  basis by each
     outstanding  share of each  class  based on the daily  net  asset  value of
     shares of that class.  As of December 31, 1997, no Class C Shares have been
     issued.


(2)  Significant Accounting Policies

     (a) Valuation of Investment Securities

         Value of  securities,  including  call  options,  which  are  traded on
         exchanges are valued at the last sales price on the principal  exchange
         as of the close of the New York  Stock  Exchange  or 3:00 p.m.  Central
         Standard  Time,  whichever is earlier,  on the day the  securities  are
         being valued.  Securities not traded on a stock exchange on a given day
         or traded  over-the-counter  are valued using a procedure determined in
         good faith to  represent  a fair value and which is  authorized  by the
         Board of  Trustees.  Pursuant  to Rule 2A-7 of the 1940 Act,  all money
         market  instruments in the Money Market Fund are valued on an amortized
         cost basis.  Money Market  Instruments in the other funds are valued on
         an amortized cost basis if there are less than 60 days to maturity.

     (b) Share Valuation and Dividends to Shareholders

         The net asset value of the shares of each fund is determined on a daily
         basis based on the  valuation of the net assets of the funds divided by
         the number of shares of the fund outstanding.  Expenses,  including the
         investment  advisory,  advisory/administrative,  and distribution  fees
         (note 4), are accrued daily and reduce the net asset value per share.

         Dividends  on the Money  Market  Fund will be declared  and  reinvested
         daily in  additional  full and  fractional  shares of the Money  Market
         Fund.  Dividends of ordinary income from the Capital Appreciation Stock
         Fund,  Growth and Income Stock Fund,  Bond Fund, and Balanced Fund will
         be declared and reinvested  quarterly in additional full and fractional
         shares of the respective funds. All net realized capital gains of these
         funds, if any, will be declared and reinvested at least  annually.  The
         Treasury 2000 Fund will utilize an annual  consent  dividend  procedure
         which provides the fund with the deduction for dividends constructively
         paid to shareholders.

     (c) Federal Income and Excise Taxes

         The Fund intends to distribute  all of its taxable income and to comply
         with the other  requirements of the Internal Revenue Code applicable to
         regulated investment companies. Accordingly, no provision for income or
         excise taxes is required.  Net investment income and net realized gains
         (losses)  for the funds may  differ  for  financial  statement  and tax
         purposes.  The character of distributions made during the year from net
         investment  income or net realized gains may differ from their ultimate
         characterization  for federal  income tax  purposes.  Also,  due to the
         timing of dividend distributions,  the fiscal year in which amounts are
         distributed  may differ from the year that the income or realized gains
         (losses)  were  recorded  by  the  funds.  In  addition,   the  Capital
         Appreciation  Stock Fund,  the Growth and Income  Stock  Fund,  and the
         Balanced Fund paid consent  dividends,  whereby  $91,306,  $131,287 and
         $16,980,  respectively,  of its  realized  gains were  treated as being
         distributed to their shareholders and reinvested in that fund.



<PAGE>


     (d) Security Transactions and Investment Income

         Security  transactions  are recorded on the trade date basis.  Realized
         gains  and  losses  from  security  transactions  are  reported  on the
         identified cost basis. Interest,  including amortization of premium and
         discount,  is accrued  daily and  dividend  income is  recorded  on the
         ex-dividend date.

     (e) Use of Estimates

         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  and
         liabilities and disclosure of contingent  assets and liabilities at the
         date of the financial  statements and the reported  amounts of increase
         and decrease in net assets from  operations  during the period.  Actual
         results could differ from those estimates.

(3)  Purchase and Sales of Investment Securities

     The cost of  securities  purchased and the proceeds  from  securities  sold
     (including maturities, excluding short-term securities for all funds except
     Money Market) for each fund during the year ended  December 31, 1997,  were
     as follows:
<TABLE>
<CAPTION>

                                             Capital       Growth and                                      Money       Treasury
                                          Appreciation    Income Stock       Balanced        Bond         Market         2000
                                           Stock Fund         Fund             Fund          Fund          Fund          Fund
<S>                                <C>              <C>             <C>            <C>            <C>             <C>

Total costs of securities purchased   $323,217,798     $315,654,405    $138,509,972   $163,798,811   $208,359,230    $      --
                                       ===========      ===========     ===========    ===========    ===========     ========
Total proceeds received on security
sales and principal paydowns           $29,124,058      $76,016,996     $56,037,257    $15,142,309   $189,689,839    $      --
                                        ==========      ===========     ===========     ==========    ===========     ========
</TABLE>


(4)  Transactions with Affiliates

     Fees and Expenses

     The Fund has entered into an investment  advisory agreement with CIMCO Inc.
     (the  "Investment  Adviser"),  an affiliated  company.  For the  four-month
     period  ended April 30,  1997,  the  Investment  Adviser  received  monthly
     advisory  or  advisory/  administrative  fees,  based on average  daily net
     assets, at an annual rate of .5 percent of the Capital  Appreciation Stock,
     Growth and Income  Stock,  Balanced,  Bond and Money  Market  Funds and .45
     percent of the Treasury 2000 Fund. On May 1, 1997, a new advisory agreement
     with the Investment  Advisor  changed this fee structure and provides for a
     different fee for each portfolio  within the Fund. The fees,  paid monthly,
     are  calculated  as a percentage  of the average  daily net assets for each
     portfolio at the following annual rates:

              Capital Appreciation Stock             0.80%
              Balanced                               0.70%
              Growth and Income Stock                0.60%
              Bond                                   0.55%
              Money Market                           0.45%
              Treasury 2000                          0.45%

     Under the new unitary fee structure,  the Investment Adviser is responsible
     for providing or obtaining  services and paying certain expenses  including
     custodian  fees,  transfer agent fees,  pricing  costs,  and accounting and
     legal fees as indicated in the investment advisory agreement.

     In addition  to the unitary  investment  advisor  fee,  each fund also pays
     certain expenses including trustees fees, brokerage commissions,  interest
     expense, audit fees, and other extraordinary expenses.

     For the four-month period ended April 30, 1997, the Investment  Adviser was
     required  to  reimburse  the funds  for the  amount,  if any,  by which the
     aggregate expenses of any fund (including the Investment Adviser's fee, but
     excluding  brokerage  commissions,   interest,   taxes,  and  extraordinary
     expenses) in any calendar  year exceed 2.0 percent of the average daily net
     assets of the funds. In addition, for the four-month period ended April 30,
     1997,  CUNA Mutual Life has  voluntarily  agreed to  reimburse  the Capital
     Appreciation Stock, Growth and Income Stock, Balance, Bond and Money Market
     Funds for ordinary  business expenses in excess of .65 percent (of which .5
     percent is the advisory  fee and .15 percent is general and  administrative
     expenses)  of the average  daily net assets of these funds.  Also,  for the
     four-month  period ended April 30, 1997, the Investment  Advisor has agreed
     to assume  responsibility  for  providing all  administrative  services and
     paying all  ordinary  business  expenses  of the  Treasury  2000 Fund which
     exceed .45  percent  (all of which is the  advisory/administrative  fee) of
     average  daily net  assets.  Currently,  CUNA  Mutual  Life and CUNA Mutual
     Insurance  Society,  affiliated  companies,  are  providing  administrative
     services on behalf of the Investment Advisor.
<PAGE>


     During the year ended  December  31,  1997,  CUNA Mutual  Life  voluntarily
     reimbursed expenses for each of the funds in the following amounts:

           Capital Appreciation Stock Fund..........   $ 8,943
           Bond Fund ................................  $ 4,363
           Growth and Income Stock Fund..............  $16,291
           Money Market Fund ........................  $ 4,095
           Balanced Fund.............................  $12,966


     All capital shares  outstanding at December 31, 1997, are owned by separate
investment accounts of CUNA Mutual Life.

     Certain officers and directors of the Fund are also officers of CUNA Mutual
     Life or CIMCO Inc. During the twelve-month  period ended December 31, 1997,
     the Fund made no direct payments to its officers and paid trustees' fees of
     approximately $12,675 to its unaffiliated trustees.

     Distribution Plan

     All shares are distributed through CUNA Brokerage Service, Inc.("CBS"), and
     affiliated company, or other registered  broker-dealers  authorized by CBS.
     Class C Shares  may also be  subject  to an  asset-based  distribution  fee
     pursuant to Rule 12b-1 under the 1940 Act, equal to not more than 0.25%, on
     an annual  basis,  of the  average  value of the  daily net  assets of each
     series of the Fund attributable to Class C Shares on an annual basis.


(5)  Share Activity

     Transactions  in Class Z Shares of each fund for the years  ended  December
31, 1997 and 1996, were as follows:
<TABLE>
<CAPTION>

                                            Capital        Growth and                                     Money        Treasury
                                         Appreciation     Income Stock      Balanced         Bond        Market          2000
                                          Stock Fund          Fund            Fund           Fund         Fund           Fund
<S>                                    <C>             <C>             <C>            <C>           <C>              <C>

Shares outstanding at December 31, 1995    3,046,550       5,611,047       7,585,243      1,291,279    11,374,129        182,546

Shares sold, including reinvestment
       of dividends                        3,818,030       5,524,047       5,380,713      1,453,110    33,769,815            805

Shares repurchased                          (105,316)       (215,447)       (228,534)      (171,319)  (24,132,957)            --
                                           ---------       ---------       ---------      ---------    ----------        -------
Shares outstanding at December 31, 1996    6,759,264      10,919,647      12,737,422      2,573,070    21,010,987        183,351

Shares sold, including reinvestment
       of dividends                       17,535,010      10,850,472       5,705,061     15,479,381    58,801,364            787

Shares repurchased                           (93,915)        (77,316)       (243,133)      (143,139)  (38,642,199)            --
                                          ----------      ----------       ---------      ---------    ----------        -------
Shares outstanding at December 31, 1997   24,200,359      21,692,803      18,199,350     17,909,312    41,170,152        184,138
                                          ----------      ----------      ----------     ----------    ----------        -------

</TABLE>
<PAGE>


                                ULTRA SERIES FUND
                          INDEPENDENT AUDITORS' REPORT


The Trustees and Shareholders
Ultra Series Fund:

We have  audited  the  statements  of  assets  and  liabilities,  including  the
schedules of investments in securities,  of the Capital Appreciation Stock Fund,
Growth and Income Stock Fund,  Balanced Fund, Bond Fund,  Money Market Fund, and
Treasury  2000 Fund of the Ultra Series Fund as of December  31,  1997,  and the
related  statements of  operations  for the year then ended,  the  statements of
changes in net assets for each of the years in the  two-year  period then ended,
and financial  highlights for each of the years in the five-year (four years for
Capital  Appreciation Stock Fund) 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  information  are free of material  misstatement.  An audit  includes
examining,  on a test basis,  evidence supporting the amounts and disclosures in
the financial  statements.  Investment securities held in custody were confirmed
to us by the custodian.  As to securities  purchased or sold but not received or
delivered,  we requested  confirmation from brokers,  and where replies were not
received,  we carried  out other  appropriate  audit  procedures.  An audit also
includes assessing the accounting principles used and significant estimates made
by  management,   as  well  as  evaluating  the  overall   financial   statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

In our opinion,  the financial  statements and financial  highlights referred to
above present fairly, in all material  respects,  the financial  position of the
Capital  Appreciation  Stock Fund, Growth and Income Stock Fund,  Balanced Fund,
Bond Fund, Money Market Fund, and Treasury 2000 Fund of the Ultra Series Fund as
of December 31, 1997,  the results of their  operations for the year then ended,
the  changes in their net  assets  for each of the years in the  two-year-period
then ended, and the financial  highlights for each of the years in the five-year
(four years for Capital Appreciation Stock Fund) period then ended in conformity
with generally accepted accounting principles.


                                        KPMG Peat Marwick LLP

Des Moines, Iowa
February 6, 1998


<PAGE>


                                ULTRA SERIES FUND
                              Officers and Trustees


OFFICERS                   

Michael S. Daubs, President
Lawrence R. Halverson, Vice President/Secretary   
Donald E. Heltner, Vice President
Michael G. Joneson, Chief Accounting Officer, Treasurer and Assistant Secretary
Robert M. Buckingham, Chief Financial Officer/Assistant Secretary

BOARD OF TRUSTEES

Gwendolyn M. Boeke
Alfred L. Disrud
Kevin T. Lentz
Keith S. Noah
Thomas C. Watt


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