ULTRA SERIES FUND
485BPOS, 1998-04-17
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     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 17, 1998

                                                       Registration No: 2-87775
                                                                       811-4815
===============================================================================

                       SECURITIES AND EXCHANGE COMMISSION

                              Washington, DC 20549

                                    FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933                     |_|
         Pre-Effective Amendment No.                                        |_|
         Post-Effective Amendment No. 21                                    |X|

                                     and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940             |_|
         Amendment No. 25                                                   |X|


                                ULTRA SERIES FUND
               (Exact Name of Registrant as Specified in Charter)

                     2000 Heritage Way, Waverly, Iowa 50677
               (Address of Principal Executive Offices) (Zip Code)

  Registrant's Telephone Number, including Area Code (319) 352-4090, ext. 2157

                 Name and complete address of agent for service:


                             Barbara L. Secor, Esq.
                       CUNA Mutual Life Insurance Company
                                2000 Heritage Way
                               Waverly, Iowa 50677


It is proposed that this filing will become effective  (check  appropriate box):
         |_| immediately upon filing pursuant to paragraph (b)
         |X| on May 1, 1998, pursuant to paragraph (b)
         |_| 60 days after filing pursuant to paragraph (a)(1)
         |_| on pursuant to paragraph (a)(1)
         |_| 75 days after filing pursuant to paragraph (a)(2)
         |_| on pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

         |_|      this post-effective  amendment designates a new effective date
                  for a previously filed post-effective amendment.

The index to attached  exhibits is found following the signature pages.

================================================================================


<PAGE>


                              CROSS REFERENCE SHEET

Form N-1A Item Number

Part A                Prospectus Caption
1                     Cover Page
2                     FEE TABLES
3                     FINANCIAL HIGHLIGHTS
4a                    THE ULTRA SERIES FUND; INVESTMENT OBJECTIVES
                         AND POLICIES
4b                    SPECIAL INVESTMENT TECHNIQUES,
4c                    INVESTMENT OBJECTIVES AND POLICIES
5                     MANAGEMENT OF THE ULTRA SERIES FUND
5A                    See Annual Report
6                     GENERAL INFORMATION
6h                    OFFER, PURCHASE AND REDEMPTION OF SHARES
7                     OFFER, PURCHASE AND REDEMPTION OF SHARES
8                     OFFER, PURCHASE AND REDEMPTION OF SHARES
9                     N/A

Part B                Statement of Additional Information Caption
10                    Cover Page
11                    TABLE OF CONTENTS
12                    GENERAL INFORMATION
13                    INVESTMENT PRACTICES; INVESTMENT LIMITATIONS;
                         PORTFOLIO TURNOVER
14                    MANAGEMENT OF THE FUND
15                    Substantial Shareholders; Beneficial Owners
16                    THE INVESTMENT ADVISER
17                    DISTRIBUTION PLAN AND AGREEMENT; BROKERAGE
18                    See Prospectus
19                    HOW SECURITIES ARE OFFERED
20                    DIVIDENDS, DISTRIBUTION AND TAXES
21                    HOW SECURITIES ARE OFFERED
22                    CALCULATION OF YIELDS AND TOTAL RETURNS
23                    FINANCIAL STATEMENTS

<PAGE>


   
                                Ultra Series Fund

                                   PROSPECTUS

                                   MAY 1, 1998

The Ultra  Series  Fund is an  investment  company  consisting  of six  separate
investment  portfolios  or funds (each,  a "Fund") each of which has a different
investment  objective(s).  Each  Fund  is  a  diversified,  open-end  management
investment  company,  commonly known as a mutual fund. There can be no assurance
that  the  investment  objective  of  any  Fund  will  be  achieved.  Investment
experience of each Fund will vary. The separate funds are as follows:

                         CAPITAL APPRECIATION STOCK FUND
                          GROWTH AND INCOME STOCK FUND
                                  BALANCED FUND
                                    BOND FUND
                                MONEY MARKET FUND
                               TREASURY 2000 FUND

PLEASE READ THIS PROSPECTUS  CAREFULLY AND KEEP IT FOR FUTURE  REFERENCE.  In it
you will find information that you should know before  investing.  The Statement
of Additional Information, which has been filed with the Securities and Exchange
Commission  and  is  incorporated  herein  by  reference,   contains  additional
information  about the Ultra Series Fund. You may obtain a copy of the Statement
of Additional Information (dated May 1, 1998, as supplemented from time to time)
free of charge by either using the address or telephone  number shown below,  or
from  the  Securities  and  Exchange  Commission's  web  site  on  the  Internet
(http://www.sec.gov).

- --------------------------------------------------------------------------------
The Funds are available to the public only through the purchase of:

     (1)  certain  individual  variable  life  insurance  contracts  or variable
          annuity  contracts;  

     (2)  certain  group  variable  annuity  contracts by qualified  pension and
          retirement plans; or

     (3)  Class C shares of the Ultra Series Fund directly by qualified  pension
          and retirement plans.
    
When used in connection with individual  variable annuity  contracts or variable
life insurance  contracts,  this  Prospectus must be accompanied by prospectuses
for those contracts.  When distributed to qualified pension and retirement plans
or to  participants  of  such  plans,  this  Prospectus  may be  accompanied  by
disclosure  materials relating to such plans which should be read in conjunction
with this Prospectus.
- --------------------------------------------------------------------------------
   
Unlike credit union and bank  accounts,  the value of an investment in the Ultra
Series Fund not  insured.  Shares of the Ultra Series Fund are not a deposit of,
or  guaranteed  by, any bank or credit  union and are not insured by the Federal
Deposit  Insurance  Corporation  or government  agency.  An investment  involves
certain risks including a loss of principal.

An investment in the Money Market Fund is neither  insured nor guaranteed by the
U.S.  Government.  There is no assurance that the Money Market Fund will be able
to maintain a stable net asset value of $1.00 per share.

Neither  the  Securities  and  Exchange  Commission  nor  any  state  securities
commissions  has approved or disapproved of these  securities or passed upon the
adequacy or accuracy of this prospectus. Any representation to the contrary is a
criminal offense.


Distributed by:
CUNA BROKERAGE SERVICES, INC.                                  ULTRA SERIES FUND
2000 Heritage Way                                              2000 Heritage Way
Waverly, IA  50677                                             Waverly, IA 50677
(319) 352-4090                                                    (319) 352-4090
(800) 798-5500                                                    (800) 798-5500
    

<PAGE>

                                TABLE OF CONTENTS
                                                                           PAGE
EXPENSE TABLE..................................................................1

FINANCIAL HIGHLIGHTS...........................................................1

THE ULTRA SERIES FUND..........................................................8

INVESTMENT OBJECTIVES AND POLICIES.............................................8

   Capital Appreciation Stock Fund.............................................9

   Growth and Income Stock Fund................................................9

   Balanced Fund...............................................................9

   Bond Fund..................................................................10

   Money Market Fund..........................................................10

   Treasury 2000 Fund.........................................................12

SPECIAL INVESTMENT TECHNIQUES.................................................12

   Investment Techniques and Instruments Authorized But Not Used..............12

   Repurchase Agreements......................................................12

   Borrowing..................................................................13

   Foreign Securities.........................................................13

   Lower-rated Debt Securities................................................14

MANAGEMENT OF THE ULTRA SERIES FUND...........................................14

   The Trustees...............................................................14

   CUNA Mutual Life Insurance Company.........................................14

   The Investment Adviser.....................................................14

   The Management Agreement...................................................14

OFFER, PURCHASE AND REDEMPTION OF SHARES......................................15

GENERAL INFORMATION...........................................................16

   Shareholder Rights.........................................................16

   Inquiries..................................................................16

   Dividends..................................................................17

   The Ultra Series Fund Performance..........................................17

   Tax Status.................................................................18

   Net Asset Value............................................................18

PREPARING FOR YEAR 2000.......................................................18

APPENDIX A....................................................................19

<PAGE>
<TABLE>
<CAPTION>
   
                                                              EXPENSE TABLE

Fund investors pay various expenses, either directly or indirectly. The Expenses shown are provided to assist you in understanding
the expenses you may pay.
<S>                                                                                                 <C>                <C>   

Shareholder Transaction Expenses                                                                         Class C           Class Z
- --------------------------------                                                                         -------           -------
         Maximum Sales Load Imposed on Purchases (as a percentage of offering price)......................None               None
         Maximum Deferred Sales Load......................................................................None               None
         Maximum Sales Load Imposed on Reinvested Dividends (and other Distributions).....................None               None
         Redemption Fees (as a percentage of amount redeemed, if applicable)..............................None               None
         Exchange Fees....................................................................................None               None

Annual Fund Operating Expenses (as a percentage of average net assets)
- ------------------------------
         Management Fees
                  Money Market Fund.......................................................................0.45%              0.45%
                  Bond Fund...............................................................................0.55%              0.55%
                  Balanced Fund...........................................................................0.70%              0.70%
                  Growth and Income Stock Fund............................................................0.60%              0.60%
                  Capital Appreciation Stock Fund.........................................................0.80%              0.80%
                  Treasury 2000 Fund......................................................................0.45%              0.45%
         12b-1 Fees.......................................................................................0.25%              0.00%
         Other Expenses
                  Money Market Fund.......................................................................0.01%              0.01%
                  Bond Fund...............................................................................0.01%              0.01%
                  Balanced Fund...........................................................................0.01%              0.01%
                  Growth and Income Stock Fund............................................................0.01%              0.01%
                  Capital Appreciation Stock Fund.........................................................0.01%              0.01%
                  Treasury 2000 Fund......................................................................None               None
         Total Fund Operating Expenses
                  Money Market Fund.......................................................................0.71%              0.46%
                  Bond Fund...............................................................................0.81%              0.56%
                  Balanced Fund...........................................................................0.96%              0.71%
                  Growth and Income Stock Fund............................................................0.86%              0.61%
                  Capital Appreciation Stock Fund.........................................................1.06%              0.81%
                  Treasury 2000 Fund......................................................................0.70%              0.45%
</TABLE>
    
                                                              Example

<TABLE>
<CAPTION>
   
You would pay the  following  expenses on a $1,000  investment,  assuming (1) 5% annual return and (2) redemption at the end of each
period:
                                            1 year                  3 years                 5 years                   10 years
                                      Class C    Class Z      Class C    Class Z      Class C     Class Z       Class C    Class Z
                                      -------    -------      -------    -------      -------     -------       -------    -------
<S>                                <C>         <C>         <C>         <C>          <C>         <C>           <C>         <C>
Money Market Fund                       7         5            23         15           40          26              88         58
Bond Fund                               8         6            26         18           45          31             100         70
Balanced Fund                          10         7            31         23           53          40             118         88
Growth and Income Stock Fund            9         6            27         20           48          34             106         76
Capital Appreciation Stock Fund       $11        $8           $34        $26          $58         $45            $129       $100
Treasury 2000 Fund                      7         5            22         14           39          25              87         57
</TABLE>
    
   
You should not consider  these  Expenses as a  representation  of past or future
expenses. Actual expenses may be greater or lesser than those shown.
    
                              FINANCIAL HIGHLIGHTS

   
The  financial  highlights  provided on the  following  pages for the years 1988
through 1997 have been audited by KPMG Peat Marwick,  LLP, independent auditors.
You should read these highlights along with the financial statements and related
notes and the Auditors' Report in the Statement of Additional Information.
    


<PAGE>
<TABLE>
<CAPTION>
                                        CAPITAL APPRECIATION STOCK FUND OF ULTRA SERIES FUND
                                                        Financial Highlights
                                                      Years 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                              .07                 .13                 .14                0.16

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

  Total from Investment Operations                   4.59                2.68                3.05                0.53


  Distributions

   Distributions from Net Investment Income          (.07)               (.13)               (.14)              (0.15)

   Distributions from Realized Capital Gains         (.27)               (.46)               (.37)              (0.41)

  Total Distributions                                (.34)               (.59)               (.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***            .82%               0.65%               0.65%               0.65%

Ratio of Net Investment Income to Average
  Net Assets                                          .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>
  *The Fund began operations January 3, 1994.

 **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
                                                      Years Ended December 31
                                         ---------------------------- GROWTH AND INCOME STOCK FUND ----------------------------
(For a share outstanding throughout 

 the period):                            1997     1996     1995     1994     1993     1992     1991     1990     1989     1988
<S>                                <C>        <C>      <C>     <C>       <C>      <C>      <C>      <C>      <C>      <C>
Net Asset Value, Beginning of          $21.32   $18.20   $15.06   $15.51   $15.49   $15.21   $12.75   $14.13   $12.15   $10.74
  Period
Income from Investment Operations

Net Investment Income                     .31      .34      .37      .32      .29      .32      .33      .44      .33      .31

Net Realized and Unrealized Gain
(Loss) on Investments                    6.36     3.93     4.37     (.04)    1.87      .90     2.95     (.73)    2.61     1.47  

Total from Investment Operations         6.67     4.27     4.74      .28     2.16     1.22     3.29     (.29)    2.94     1.77  


Distributions

Distributions from Net Investment 
  Income                                 (.32)    (.34)   (.37)     (.32)    (.29)    (.32)    (.34)    (.44)    (.38)    (.33) 

Distributions from Realized 
  Capital Gains                          (.47)    (.81)  (1.23)     (.40)   (1.85)    (.62)    (.49)    (.66)    (.58)    (.03) 

Total Distributions                      (.79)   (1.15)  (1.60)     (.73)   (2.14)    (.94)    (.83)   (1.10)    (.96)    (.36) 


Net Asset Value, End of Period         $27.20   $21.32  $18.20    $15.06   $15.51   $15.49   $15.21   $12.75   $14.13   $12.15  


Total Return*                           31.42%   22.02%  31.75%     1.42%   13.77%    7.66%   25.66%   -1.98%   24.37%   16.62% 


Ratio/Supplemental Data

Net Assets, End of Period 
  (000s Omitted)                     $590,135 $232,841 $102,138  $48,913  $32,468  $24,382  $17,101   $9,258   $7,932   $5,337  

Ratio of Expenses to Average 
  Net Assets**                            .61%     .65%    .65%      .65%     .65%     .65%     .65%     .65%     .65%     .65%   

Ratio of Net Investment Income to
  Average Net Assets                     1.39%    1.78%   2.28%     2.19%    1.84%    2.11%    2.58%    3.33%    2.83%    2.75%   

Portfolio Turnover Rate                 20.39%   40.55%  57.80%    45.36%   56.79%   29.67%   27.90%   32.02%   35.55%   26.22%  

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
                                                      Years Ended December 31
                                        ------------------------------------- BALANCED FUND -------------------------------------
(For a share outstanding throughout
  the period): .......................   1997     1996    1995      1994     1993     1992     1991     1990     1989     1988
<S> ................                <C>       <C>      <C>     <C>       <C>      <C>      <C>      <C>      <C>      <C>
Net Asset Value, Beginning of Period   $15.29   $14.63  $12.90    $13.70   $13.54   $13.44   $12.11   $12.59   $11.47   $10.98
  Income from Investment Operations
   Net Investment Income ...........      .62      .58     .55       .52      .50      .55      .62      .74      .61      .60
   Net Realized and Unrealized Gain
    (Loss)on Investments ...........     1.93      .98    2.29      (.56)     .95      .40     1.56     (.29)    1.42      .57

  Total from Investment Operations .     2.55     1.56    2.84      (.04)    1.45      .95     2.18      .46     2.03     1.18

Distributions

 Distributions from Net Investment
    Income .......................       (.63)    (.58)   (.55)     (.51)    (.50)    (.55)    (.63)    (.74)    (.71)    (.68)
 Distributions from Realized
    Capital Gains ................       (.19)    (.32)   (.56)     (.25)    (.79)    (.30)    (.22)    (.20)    (.20)    0.00
          
Total Distributions ..............       (.82)    (.90)  (1.11)     (.76)   (1.29)    (.85)    (.85)    (.94)    (.91)    (.68)
                                                                                                                                 
Net Asset Value, End of Period ...     $17.02   $15.29  $14.63    $12.90   $13.70   $13.54   $13.44   $12.11   $12.59   $11.47

Total Return* ....................      16.87%   10.79%  22.27%    -0.46%   10.47%    6.85%   18.53%    3.75%   18.03%   10.87%

Ratio/Supplemental Data

Net Assets, End of Period
  (000s Omitted) .................    $309,804 $194,725$110,969   $67,468  $54,363  $41,604  $29,539  $19,964  $15,416  $10,271

Ratio of Expenses to Average Net
  Assets** .......................        .68%     .65%    .65%      .65%     .65%     .65%     .65%     .65%     .65%     .65%

Ratio of Net Investment Income to
  Average Net Assets   ...........       3.81%    3.91%   4.03%     4.00%    3.62%    4.10%    4.98%    6.23%    5.97%    6.02%

Portfolio Turnover Rate ..........      21.15%   33.48%  36.68%    28.53%   28.71%   19.23%   13.26%   27.07%   30.64%   11.35%

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
                                                      Years Ended December 31
                                      ----------------------------------------- BOND FUND -----------------------------------------
(For a share outstanding throughout 
   the period):                          1997     1996    1995      1994     1993     1992     1991     1990     1989     1988   
<S>                                 <C>       <C>      <C>     <C>       <C>      <C>      <C>      <C>      <C>      <C>   
Net Asset Value, Beginning of Period   $10.33   $10.63   $9.67    $10.58   $10.32   $10.37    $9.75    $9.93    $9.70    $9.79  
  Income from Investment Operations

   Net Investment Income                  .29      .65     .60       .59      .64      .69      .77      .89      .87      .80   

   Net Realized and Unrealized Gain 
   (Loss)on Investments                   .45     (.28)    .96      (.90)     .28     (.03)     .62     (.18)     .23     (.03)  

  Total from Investment Operations        .74      .37    1.56      (.31)     .92      .66     1.39      .71     1.11      .77   

  Distributions

   Distributions from Net Investment 
      Income                             (.51)    (.64)   (.59)     (.59)    (.65)    (.70)    (.77)    (.89)    (.88)    (.86)  

   Distributions from Realized 
     Capital Gains                       (.02)    (.03)   (.01)     (.01)    (.01)    (.01)    0.00     0.00     0.00     0.00   

  Total Distributions                    (.53)    (.67)   (.60)     (.60)    (.66)    (.71)    (.77)    (.89)    (.88)    (.86)  

Net Asset Value, End of Period         $10.54   $10.33  $10.63     $9.67   $10.58   $10.32   $10.37    $9.75    $9.93    $9.70 

Total Return*                            7.45%    2.86%  16.37%    -3.06%    8.87%    6.47%   14.70%    7.41%   11.74%    8.05% 

Ratio/Supplemental Data

Net Assets, End of Period 
   (000s Omitted)                     $188,840  $26,572 $13,725    $7,867   $6,297   $5,244   $3,975   $3,399   $3,315   $3,401

Ratio of Expenses to Average 
   Net Assets**                           .56%     .65%    .65%      .65%     .65%     .65%     .65%     .65%     .65%     .65%  

Ratio of Net Investment Income to
   Average Net Assets                    6.50%    6.25%   6.08%     6.03%    5.99%    6.83%    7.74%    8.87%    8.63%    8.50%  

Portfolio Turnover Rate                 30.71%   25.67%  14.74%    11.97%   12.23%   13.58%    8.74%   46.09%   24.47%    4.31%  
<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
                                                      Years Ended December 31
                                           -------------------------------- MONEY MARKET FUND --------------------------------
(For a share outstanding throughout 
    the period):                         1997     1996    1995      1994     1993     1992     1991     1990     1989     1988  
<S>                                <C>        <C>      <C>     <C>       <C>      <C>      <C>      <C>      <C>      <C>   
Net Asset Value, Beginning of           $1.00    $1.00   $1.00     $1.00    $1.00    $1.00    $1.00    $1.00    $1.00    $1.00
  Period
  Income from Investment Operations

   Net Investment Income                  .05      .05     .05       .03      .03      .03      .05      .08      .08      .07 

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

  Total from Investment Operations        .05      .05     .05       .03      .03      .03      .05      .08      .08      .07 

  Distributions

   Distributions from Net Investment 
    Income                               (.05)    (.05)   (.05)     (.03)    (.03)    (.03)    (.05)    (.08)    (.08)    (.07)

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

  Total Distributions                    (.05)    (.05)   (.05)     (.03)    (.03)    (.03)    (.05)    (.08)    (.08)    (.07)  

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

Total Return*                            4.75%    5.17%   5.21%     3.34%    2.86%    3.05%    5.36%    7.53%    8.39%    6.91%  

Ratio/Supplemental Data

Net Assets, End of Period 
  (000s Omitted)                       $41,170  $21,011 $11,374    $7,799   $4,749   $5,097   $5,082   $4,794   $4,420   $2,541 

Ratio of Expenses to Average 
   Net Assets**                           .50%     .65%    .65%      .65%     .65%     .65%     .65%     .65%     .65%     .65% 

Ratio of Net Investment Income to 
  Average Net Assets                     5.05%    4.74%   5.17%     3.66%    2.43%    3.05%    5.36%    7.53%    8.39%    6.91% 

Portfolio Turnover Rate                    --       --      --        --       --       --       --       --       --       --  


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%.
<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 0.51%,  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
                                                      Years Ended December 31
                                                  ---------------------------- TREASURY 2000 FUND ----------------------------
(For a share outstanding throughout the period)   1997    1996      1995     1994     1993     1992     1991     1990     1989 
<S>                                        <C>         <C>     <C>       <C>      <C>      <C>      <C>      <C>      <C> 
Net Asset Value, Beginning of Period             $8.64   $8.47     $7.00    $7.53    $6.53    $6.04    $5.02    $4.69    $3.85

  Income from Investment Operations

   Net Investment Income                           .58     .58       .58      .53      .48      .45      .41      .38      .34 

   Net Realized and Unrealized Gain
    (Loss) on Investments                          .02    (.41)      .89    (1.06)     .52      .04      .61     (.05)     .50 

  Total from Investment Operations                 .60     .17      1.47     (.53)    1.00      .49     1.02      .33      .84 

  Distributions

  Distributions from Net Investment Income        0.00    0.00      0.00     0.00     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     0.00     0.00     0.00     0.00 

   Total Distributions                            0.00    0.00      0.00     0.00     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    $6.53    $6.04    $5.02    $4.69

Total Return*                                     6.85%   2.10%    20.99%   -7.12%   15.43%    8.01%   20.37%    7.12%   21.79%

Ratio/Supplemental Data

Net Assets, End of Period (000s Omitted)         $1,701  $1,585    $1,545   $1,272   $1,363   $1,176   $1,084     $987     $834 

Ratio of Expenses to Average Net Assets            .45%    .45%      .45%     .45%     .45%     .45%     .45%     .45%     .45%

Ratio of Net Investment Income to Average
   Net Assets                                     6.56%   7.03%     7.40%    7.50%    6.69%    7.26%    7.76%    8.25%    8.02%

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>


                              THE ULTRA SERIES FUND

   
The Ultra Series Fund was established as a Massachusetts  Business Trust under a
Declaration of Trust dated September 16, 1983. The Ultra Series Fund is a series
fund with six separate  investment  portfolios,  each of which is a diversified,
open-end  management  investment  company,  in effect,  a separate  mutual  fund
("Fund"). The Ultra Series Fund issues a separate series of shares of beneficial
interest for each Fund representing fractional undivided interests in that Fund.
An  investor  in a Fund is entitled  to a pro-rata  share of all  dividends  and
distributions  arising from the net income and capital gains on the  investments
of that Fund. An investor also shares in any losses of that Fund.  The six Funds
are: Capital Appreciation Stock, Growth and Income Stock, Balanced,  Bond, Money
Market,  and Treasury 2000. In the future,  the number of Funds may change.  The
Declaration of Trust permits the Ultra Series Fund to issue an unlimited  number
of shares of each series and to sub-divide the shares of each series into two or
more classes. Currently, each series of shares is divided into Class C and Class
Z shares.  Class C and Class Z shares are identical except for the fact that the
net asset  value of each Class C share  reflects  a  distribution  fee  assessed
against  the  assets  of each  Fund  supporting  Class C  shares  pursuant  to a
distribution  plan adopted in  accordance  with Rule 12b-1 under the  Investment
Company Act of 1940 (the "Act"). (See EXPENSE TABLE.)
    

The Ultra Series Fund offers its shares to separate accounts of CUNA Mutual Life
Insurance  Company (the "Company") or of its "permanent  affiliate," CUNA Mutual
Insurance Society ("CUNA Mutual") and subsidiaries and affiliates of the Company
and CUNA  Mutual  (together,  the "CUNA  Mutual  Group") as well as to  separate
accounts of other unaffiliated life insurance  companies as funding vehicles for
certain individual variable annuity contracts,  group variable annuity contracts
and individual  variable life insurance  contracts.  Most such separate accounts
are each,  like the Ultra Series Fund,  registered as investment  companies with
the Securities and Exchange Commission ("SEC"), and a separate prospectus, which
accompanies  this  Prospectus,  describes  each such  separate  account  and its
related  contract.  Some insurance  company separate  accounts  supporting group
variable  annuity  contracts  sold solely to  qualified  pension and  retirement
plans, however, are not investment companies and are not registered with the SEC
as investment  companies nor are interests in the separate account registered as
securities under the federal securities laws. Although some disclosure documents
relating to such group variable annuity contracts (and/or to the plan purchasing
the  contracts)  may be  provided to the plan  purchasing  the  contracts  or to
participants in such a plan, no prospectus  exists for the contracts.  The Ultra
Series  Fund  also may  offer its  shares  directly  to  qualified  pension  and
retirement  plans.  The Ultra  Series Fund  generally  offers  Class Z shares to
separate  accounts of CUNA Mutual  Group  insurance  companies  and to qualified
pension and retirement  plans of CUNA Mutual Group  companies and offers Class C
shares to separate accounts of insurance  companies and to qualified pension and
retirements  plans that are not  affiliated  with CUNA Mutual  Group.  The Ultra
Series Fund does not offer its shares directly to the general public.

Because  shares  of the  Ultra  Series  Fund are sold to the CUNA  Mutual  Group
separate  accounts,  qualified  retirement plans sponsored by CUNA Mutual Group,
unaffiliated insurance company separate accounts and qualified retirement plans,
it is  possible  that  material  conflicts  could  arise  among and  between the
interests of: (1) variable annuity contract owners (or participants  under group
variable annuity  contracts) and variable life insurance contract owners, or (2)
owners of variable  annuity and variable life insurance  contracts of affiliated
and  unaffiliated  insurance  companies and (3)  participants  in affiliated and
unaffiliated  qualified retirement plans. Such material conflicts could include,
for example,  differences in federal tax treatment of variable annuity contracts
versus  variable  life  insurance  contracts.  The  Ultra  Series  Fund does not
currently  foresee  any  disadvantage  to one  category of  investors  vis-a-vis
another  arising  from the fact  that the Ultra  Series  Fund's  shares  support
different  types of variable  insurance  contracts.  However,  the Ultra  Series
Fund's  Board of Trustees  will  continuously  monitor  events to  identify  any
potential  material  conflicts that may arise between the interests of different
categories or classes of investors and to determine what action,  if any, should
be taken to resolve such conflicts.  Such action may include redeeming shares of
the Ultra Series Fund held by one or more of the separate  accounts or qualified
retirement plans involved in any material irreconcilable conflict.

                       INVESTMENT OBJECTIVES AND POLICIES

Each Fund has one or more investment  objectives and related investment policies
and uses various investment  techniques to pursue these objectives and policies.
There can be no  assurance  that any of the Funds will  achieve  its  investment
objective or objectives.  Investors should not consider any one Fund alone to be
a  complete  investment  program.  All of the Funds are  subject  to the risk of
changing economic conditions, as well as the risk inherent in the ability of the
Fund's  investment  adviser to make changes in the portfolio  composition of the
Fund in anticipation of changes in economic, business, and financial conditions.
As with any security,  a risk of loss is inherent in an investment in the shares
of any of the Funds.

The different types of securities,  investments,  and investment techniques used
by each Fund all have  attendant  risks of varying  degrees.  For example,  with
respect to equity securities,  there can be no assurance of capital appreciation
and there is a  substantial  risk of decline.  With respect to debt  securities,
there  exists the risk that the issuer of a security may not be able to meet its
obligations  on  interest  or  principal  payments  at the time  required by the
instrument. In addition, the value of debt instruments generally rises and falls
inversely with prevailing interest rates.

<PAGE>

Certain types of  investments  and investment  techniques  common to one or more
Funds are  described  in  greater  detail,  including  the risks of each,  under
SPECIAL INVESTMENT  TECHNIQUES in this Prospectus or in INVESTMENT  PRACTICES in
the Statement of Additional  Information.  The Funds are also subject to certain
investment   restrictions  that  are  described  under  the  caption  INVESTMENT
LIMITATIONS in the Statement of Additional Information.

The  investment  objective or objectives of each Fund as well as the  investment
restrictions  of each Fund are  fundamental  and may not be changed  without the
approval of a majority of the votes  attributable to the  outstanding  shares of
that  Fund.  (See   INVESTMENT   LIMITATIONS  in  the  Statement  of  Additional
Information.)  Investment policies are not fundamental and may be changed by the
Ultra  Series  Fund's  Board of  Trustees  without  shareholder  approval.  (See
INVESTMENT  PRACTICES and INVESTMENT  LIMITATIONS in the Statement of Additional
Information.)

Capital Appreciation Stock Fund

The  primary  investment  objective  of the Capital  Appreciation  Stock Fund is
long-term capital growth. Due to its more aggressive focus on capital growth and
lack of emphasis on current income, this Fund will typically  experience greater
variability  of  returns  over time than the Growth and  Income  Stock  Fund.  A
characteristic  common to most  stocks  owned  will be an  attractive  valuation
relative to the expected  level and  certainty of the issuing  company's  future
earnings. Relative to the Growth and Income Stock Fund, the Capital Appreciation
Stock Fund will include some smaller,  less developed issuers and some companies
undergoing more significant  fundamental changes in their markets or operations.
The Fund  will  diversify  its  holdings  among  various  industries  and  among
companies  within those  industries but will often be less  diversified than the
Growth and Income  Stock  Fund.  The  combination  of these  factors  introduces
greater  investment  risk than the Growth and Income  Stock  Fund,  but can also
provide higher long-term returns than the returns typically  available from less
variable investments.  When, in the opinion of management, current cash needs or
market or economic  conditions  warrant,  the Fund may maintain a portion of its
assets in cash or cash  equivalents of the types  permitted for the Money Market
Fund.

   
Consistent  with  applicable  regulatory  requirements,  the Fund may enter into
repurchase  agreements  and  borrow  money.  Also,  the Fund may lend  portfolio
securities,  invest in restricted securities,  invest in foreign securities, and
invest in put and call  options,  stock index futures and related  options.  The
Fund may  invest  up to 25% of total  assets  in  American  Depository  Receipts
("ADRs").  These practices are described in SPECIAL INVESTMENT  TECHNIQUES or in
the Statement of Additional Information.
    

Growth and Income Stock Fund

The  primary  investment  objective  of the  Growth  and  Income  Stock  Fund is
long-term  capital growth,  with income as a secondary  consideration.  The Fund
will focus on stocks of  companies  with  financial  and market  strength  and a
long-term record of performance.  Primarily  through  ownership of a diversified
portfolio of common stocks and securities  convertible  into common stocks,  the
Fund will seek a rate of return in excess of returns  typically  available  from
less variable investment  alternatives.  A characteristic  common to most stocks
owned will be an attractive valuation relative to the issuing company's apparent
strength and earnings  capability.  The Fund will  diversify its holdings  among
various  industries and among companies  within those  industries.  When, in the
opinion  of  management,  current  cash needs or market or  economic  conditions
warrant,  the  Fund  may  maintain  a  portion  of its  assets  in  cash or cash
equivalents of the types permitted for the Money Market Fund.

   
Consistent  with  applicable  regulatory  requirements,  the Fund may enter into
repurchase  agreements  and  borrow  money.  Also,  the Fund may lend  portfolio
securities,  invest in restricted securities,  invest in foreign securities, and
invest in put and call  options,  stock index futures and related  options.  The
Fund may invest up to 25% of total assets in ADRs. These practices are described
in SPECIAL INVESTMENT TECHNIQUES or in the Statement of Additional Information.
    

Balanced Fund

   
The investment  objective of the Balanced Fund is to achieve a high total return
through the  combination of income and capital  appreciation.  Total returns are
expected to be less variable than those of the Capital  Appreciation  Stock Fund
and the Growth and Income Stock Fund but more variable  than the Bond Fund.  The
Balanced  Fund invests in a broadly  diversified  list of  securities  including
common  stocks,  bonds and money market  instruments.  The  percentage of assets
invested  in  equity  securities,  fixed  income  securities  and  money  market
instruments  may vary  somewhat  depending  upon  management's  judgment  of the
relative  attractiveness  of each sector and anticipated cash needs of the Fund.
Generally,  however,  common stocks will  constitute  60% to 40% of Fund's total
assets, bonds will constitute 40% to 60% of Fund's total assets and money market
instruments  may constitute up to 20% of Fund's total assets.  (See Money Market
Fund for description of money market instruments;  see Bond Fund for description
of bonds; see Capital  Appreciation  Stock Fund and Growth and Income Stock Fund
for description of equity securities.)
    

<PAGE>

Debt  securities  invested in by the Fund will be affected by general changes in
interest  rates,  resulting  in  increases  or  decreases  in the value of these
securities.  Market prices of debt  securities  tend to rise when interest rates
fall, and fall when interest rates rise.  Issuers of debt  securities may not be
able to meet their  interest or  principal  payment  obligations  when due.  The
ability of the portfolio to realize  interest  under  repurchase  agreements and
pursuant to loans of the Fund's  securities  is  dependent on the ability of the
seller or borrower, as the case may be, to perform its obligations to the Fund.

   
Consistent  with  applicable  regulatory  requirements,  the Fund may enter into
repurchase  agreements  and  borrow  money.  Also,  the Fund may lend  portfolio
securities,  invest in  restricted  securities,  invest in  foreign  securities,
invest in put and call  options,  financial  futures,  stock  index  futures and
related  options.  The Fund may invest up to 15% of total assets in ADRs.  These
practices are described in the SPECIAL INVESTMENT TECHNIQUES or in the Statement
of Additional Information.
    

Bond Fund

The primary investment objective of the Bond Fund is to generate 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.  To keep current income  relatively  stable and to
limit share price  volatility,  the portfolio will emphasize  investment  grade,
primarily  intermediate  term  securities.  Pursuit of these  objectives  can be
expected  to result  over time in a lower  average  return  than in the  Capital
Appreciation  Stock Fund,  Growth and Income  Stock Fund or Balanced  Fund.  The
assets  of the  Fund  may  also  be held in  cash  or  temporarily  invested  in
short-term  investments  when, in the opinion of management,  current  liquidity
needs or market  or  economic  conditions  warrant.  The Fund may  invest in the
following instruments:

          Corporate   Debt   Securities:   Issued  by   domestic   and   foreign
          corporations.

          U.S.  Government  Debt  Securities:  Issued or  guaranteed by the U.S.
          Government or its agencies or instrumentalities (See Money Market Fund
          for a description of U.S. Government securities).

   
          Foreign Government Debt Securities:  Issued or guaranteed by a foreign
          government  or its agencies or  instrumentalities  and payable in U.S.
          dollars.

          Other Issuer Debt  Securities:  Issued or guaranteed by  corporations,
          banking institutions, and others.

          Lower Rated Debt  Securities:  Issued or  guaranteed  by domestic  and
          foreign corporations and governments not rated within the four highest
          categories  (up to 20% of  assets  and  subject  to the 10%  limit  on
          foreign securities).
    

          Cash or Cash Equivalents:  Of the types permitted for the Money Market
          Fund.

The Bond Fund will be affected by general changes in interest rates resulting in
increases or decreases in the value of the Fund's  securities.  Market prices of
debt  securities  tend to rise when  interest  rates fall and fall when interest
rates rise. Issuers of debt securities may not be able to meet their interest or
principal  payment  obligations  when due.  The  ability  of the Fund to realize
interest  under  repurchase  agreements  and  pursuant  to loans  of the  Fund's
securities  is dependent  on the ability of the seller or borrower,  as the case
may be, to perform its obligation to the Fund.

   
The Bond Fund invests in debt  instruments of the foregoing types that are rated
in the four highest categories by Standard & Poor's  Corporation  ("S&P") and/or
Moody's Investors Service,  Inc. ("Moody's) (i.e.,  investment grade securities)
as  well  as  instruments  that,  although  not  rated  by S&P or  Moody's,  are
considered by the  Investment  Adviser to be of equivalent  investment  quality.
Notwithstanding this, the Bond Fund may invest up to 20% of its total net assets
in corporate or foreign  government  debt  securities  which are not in the four
highest  categories  as  rated  by  Standard  & Poor's  Corporation  or  Moody's
Investors Service, Inc.
    

Consistent  with  applicable  regulatory  requirements,  the Fund may enter into
repurchase  agreements  and  borrow  money.  Also,  the Fund may lend  portfolio
securities,  invest in  restricted  securities,  invest in  foreign  securities,
invest in put and call options,  financial futures,  and related options.  These
practices are described in SPECIAL INVESTMENT  TECHNIQUES or in the Statement of
Additional Information.

Money Market Fund

The investment objective of the Money Market Fund is to seek the highest current
income available from money market instruments  consistent with the preservation
of capital  and  liquidity.  The Fund will  maintain a  dollar-weighted  average
portfolio  maturity  which  does not  exceed  90 days.  The Fund  will  purchase
instruments maturing in twelve months or less from the date of purchase.
The Fund  will  purchase  instruments  that  meet one of the  following  quality
standards:

1.       Securities that at the time of purchase are rated in the highest rating
         category for  short-term  debt  obligations  by at least two nationally
         recognized statistical rating organizations;

2.       Unrated  securities that at the time of purchase the Investment Adviser
         determines  that if they had been  rated  would  have been rated in the
         highest rating category for short-term debt obligations by at least two
         nationally recognized statistical rating organizations; or

3.       Securities  that at the time of issuance were long-term  securities but
         that at the time of purchase have a remaining maturity of less than one
         year  and  whose  issuer  has  received  with  respect  to a  class  of
         short-term  debt  obligations  (or any security within that class) that
         now is  comparable  in priority  and  security  with the security to be
         purchased,  the highest rating category for short-term debt obligations
         from  at   least   two   nationally   recognized   statistical   rating
         organizations.

The Fund may invest in the following  instruments meeting the above maturity and
quality standards:

          U.S. Government  Obligations:  U.S. Government securities include, but
          are not limited to: direct  obligations  of the U.S.  Treasury such as
          U.S. Treasury bills,  notes and bonds, and notes,  bonds, and discount
          notes of U.S. Government  instrumentalities  or agencies,  such as the
          Federal Land Bank, Bank for Cooperatives,  Federal Intermediate Credit
          Bank, Federal Home Loan Bank, Farmers Home  Administration and Federal
          National  Mortgage  Association.  The Fund may  invest  in  securities
          issued or guaranteed by any of the foregoing  entities or by any other
          agency  or  instrumentality  established  or  sponsored  by  the  U.S.
          Government.  Some  obligations  issued  or  guaranteed  by  government
          agencies or instrumentalities of the U.S. Government are backed by the
          full faith and credit of the U.S.  Government,  such as U.S.  Treasury
          bills; others are backed by the right of the issuer to borrow from the
          U.S.   Treasury  or  are  backed  by  the  credit  of  the  agency  or
          instrumentality issuing the obligation. No assurance can be given that
          the  U.S.   Government  would  provide   financial   support  to  U.S.
          Government-sponsored  instrumentalities because it is not obligated to
          do so.

          Commercial Paper:  Corporations issue these unsecured promissory notes
          to finance their short-term credit needs.

          Corporate  Obligations:  Corporations  issue  these bonds and notes to
          finance  long-term  credit  needs.  The Fund only invests in corporate
          obligations which have a maturity when purchased of one year or less.

          Bank  Obligations:  The Fund may invest in the  following  obligations
          issued by banks  subject  to  regulation  by the U.S.  Government  and
          having  total assets of $1 billion or more:  certificates  of deposit,
          time  deposits,  bankers'  acceptances.  The Fund may also  invest  in
          certificates of deposit of savings institutions  regulated by the U.S.
          Government and having total assets of $1 billion or more. The Fund may
          invest in the securities of foreign  branches of U.S.  banks,  such as
          negotiable  certificates of deposit ("Eurodollar CDs"), and may invest
          in foreign  securities.  All such  securities  must be payable in U.S.
          dollars.  U.S. dollar  denominated  obligations of foreign branches of
          U.S.  banks and U.S.  branches of foreign banks are not insured by the
          Federal  Deposit  Insurance   Corporation.   (See  SPECIAL  INVESTMENT
          TECHNIQUES.)

          Certificates of Deposit of Smaller Banks and Savings Institutions: The
          Fund may invest in certificates of deposit issued by banks and savings
          institutions  with total assets of less than $1 billion  provided they
          are fully insured in principal amount, but not as to interest,  by the
          Federal Deposit  Insurance  Corporation,  or the National Credit Union
          Share Insurance  Fund. In determining  whether and to what extent such
          securities  will be acquired by the Fund, the Investment  Adviser will
          consider  factors such as yield,  availability  of a resale market for
          certificates  of  deposit  of  small  institutions,   and  the  effect
          investments  in  these  securities  may  have  on the  Fund's  overall
          liquidity.

Although  the Fund  seeks to  maintain  a Net  Asset  Value of $1 per  share for
purposes of purchases and  redemptions,  there can be no assurance that the Fund
will be able to maintain a stable Net Asset Value of $1 per share. The Fund will
be affected by general  changes in interest  rates  resulting  in  increases  or
decreases in the value of the  obligations  held by the Fund.  The values of the
securities in the portfolio can be expected to vary  inversely to the changes in
prevailing  interest rates. Thus, if interest rates have increased from the time
a security was purchased,  such security, if sold, might be sold at a price less
than its purchase cost. Similarly, if interest rates have declined from the time
a security  was  purchased,  such  security,  if sold,  might be sold at a price
greater than its purchase cost. In either instance,  if the security was held to
maturity,  no loss or gain  would  normally  be  realized  as a result  of these
fluctuations.  Redemptions  of shares could require the sale of investments at a
time when such a sale might not otherwise be desirable. The ability of the other
party to the  transaction  to perform its  obligations to the Fund may determine
whether the Fund will receive the principal invested and the interest due.

Consistent  with  applicable  regulatory  requirements,  the Fund may enter into
repurchase  agreements  and borrow money.  Also,  the Fund may invest in foreign
securities. These practices are described in SPECIAL INVESTMENT TECHNIQUES.

<PAGE>

Treasury 2000 Fund

The  investment  objective  of the  Treasury  2000 Fund is to provide  safety of
capital and a relatively  predictable payout upon portfolio maturity,  primarily
by investing  in Stripped  Treasury  Securities.  Stripped  Treasury  Securities
include U.S.  Treasury debt obligations  originally issued as bearer bonds which
have been stripped of their unmatured interest coupons,  coupons which have been
stripped from U.S.  Treasury  bearer  bonds,  and receipts or  certificates  for
stripped U.S.  Treasury debt obligations.  Stripped  Treasury  Securities do not
receive  any  periodic  payments  of  interest  and are  not  subject  to  early
redemption. The Stripped Treasury Securities held by this Fund mature on (have a
portfolio maturity date of) November 15, 2000.

Unlike most  coupon-bearing  bonds,  Stripped Treasury  Securities are sold at a
substantial  discount  from face value  because the buyer of  Stripped  Treasury
Securities  receives  only the right to receive one future fixed  payment on the
security  and does not receive any rights to periodic  interest  payments on the
security.  While Stripped Treasury Securities  insulate  shareholders from being
unable to invest  interest  payments  received at a rate as high as the yield on
the original security, they also prevent investing the interest at a higher rate
should interest rates raise.

Because  of  their  substantial  discount,   Stripped  Treasury  Securities  are
particularly  susceptible  to wide  fluctuations  in  value  as  interest  rates
increase or decrease. The longer the term to maturity, the more susceptible they
will be to a given change in interest rate levels.  Variable  rates of inflation
and economic growth,  together with the fiscal and monetary  policies adopted to
attempt  to deal with  these and other  economic  problems,  contribute  to wide
fluctuations  in  interest  rates  (and  thus in the  value of  fixed-rate  debt
obligations like these).  Although more volatile,  Stripped Treasury  Securities
avoid reinvestment risk on the increase in value of the security.  Avoiding this
risk is an important  factor in being able to achieve a  relatively  predictable
payout upon portfolio maturity.

In addition to Stripped Treasury  Securities,  the Treasury 2000 Fund may invest
in  coupon-bearing  Treasury  Notes with  maturities  identical  to those of the
Stripped  Treasury  Securities held in the portfolio.  The Treasury Notes may be
purchased to the extent  necessary to maintain  sufficient  cash flow to pay the
Adviser's fees.

On or within 12 months prior to the portfolio maturity date, the securities will
be liquidated.  (See MANAGEMENT OF THE ULTRA SERIES FUND and OFFER, PURCHASE AND
REDEMPTION OF SHARES.) Once the Treasury 2000 Fund has liquidated its portfolio,
additional  Stripped Treasury Securities with a portfolio maturity date selected
at that time may be purchased and the Fund may continue,  with  liquidation  and
subsequent refunding occurring from time to time. Operation of the new portfolio
would be consistent  with the operation of the Treasury 2000  portfolio.  If, at
the time of the  portfolio  maturity date for this Fund, it appears not to be in
the  best  interest  of  the  Fund  to  purchase  additional  Stripped  Treasury
Securities,  the Fund will  distribute  its  assets and cease  operations.  (See
MANAGEMENT  OF THE ULTRA  SERIES  FUND and OFFER,  PURCHASE  AND  REDEMPTION  OF
SHARES.)

Consistent  with  applicable  regulatory  requirements,  the Fund may enter into
repurchase  agreements  and  borrow  money.  Also,  the Fund may lend  portfolio
securities and invest in financial futures and related options.  These practices
are described in SPECIAL INVESTMENT TECHNIQUES or in the Statement of Additional
Information.

                          SPECIAL INVESTMENT TECHNIQUES

Investment Techniques and Instruments Authorized But Not Used

As  described  above,  certain of the Funds may lend  portfolio  securities  and
invest in  restricted  securities,  put and call option  contracts,  stock index
futures  contracts,  financial  futures  contracts,  and  options on stock index
futures  contracts and financial futures contracts in which the Fund can invest.
None of the Funds has employed these practices or invested in these  instruments
during the past year and has no current intention of doing so in the foreseeable
future. Each is described in INVESTMENT PRACTICES in the Statement of Additional
Information.

Repurchase Agreements

Each Fund may enter into repurchase  agreements ("repos") with banks and dealers
in U.S. Government securities.  Under a repurchase agreement, a Fund may acquire
an  underlying  debt  instrument  for a relatively  short  period  subject to an
obligation of the seller to repurchase  and the Fund to resell the instrument at
a fixed price and time, thereby  determining the yield during the Fund's holding
period.   The  yield  during  the  holding   period  is  insulated  from  market
fluctuations.  The yield is not related to the interest  rate on the  underlying
securities.  Under the Act,  repurchase  agreements are considered  loans by the
Fund. The difference between the total amount to be received upon the repurchase
of the  securities  and the price  paid by the Fund upon  their  acquisition  is
accrued  daily  as  interest.  If the  institution  defaults  on the  repurchase
agreement, the Fund will retain possession of the underlying securities.  In the
event of a  default  by an  institution,  the Fund may  incur  certain  costs in
liquidating the collateral, and could also incur a loss if the proceeds realized
upon sale of the  underlying  obligations  are less than the  original  purchase
price. In addition, if bankruptcy  proceedings are commenced with respect to the
seller, realization on the collateral may be delayed or limited and the Fund may
incur  additional  costs.  In such a case,  the Fund  will be  subject  to risks
associated  with changes in the market value of the  collateral  securities.  In
order to limit the risks associated with entry into repurchase  agreements,  the
Trustees  have  adopted  the  following  policies  with  respect  to  repurchase
agreements.  The portfolios will enter into repurchase  agreements only (a) with
the  Ultra  Series  Fund's  custodian  bank,  (b)  with  banks  (other  than the
custodian) having capital (and surplus) of at least $1 billion or (c) with major
brokerage firms which are among the 10 largest government securities dealers and
which have been approved by the Board of Trustees,  upon  recommendation  by the
Ultra Series  Fund's  Investment  Adviser.  The Fund will obtain  collateral  in
proper form having a market value of not less than 100% of the repurchase price.
Such collateral will be U.S. Government obligations as defined under the section
describing the Money Market Fund.

Borrowing

All of the Funds may borrow money but only from banks and only for  temporary or
short-term  purposes.  Temporary or short-term  purposes may include  short-term
(i.e.,  five business  days)  credits for clearing  portfolio  transactions  and
borrowing in order to meet redemption  requests or to finance failed settlements
of portfolio trades. No Fund will borrow for leveraging purposes. Each Fund will
maintain a  continuous  asset  coverage of at least 300% (as defined in the Act)
with  respect  to all of its  borrowings.  Should  the value of a Fund's  assets
decline to below 300% of borrowings,  the Fund may be required to sell portfolio
securities  within  three days to reduce the Fund's  debt and  restore  the 300%
asset  coverage.  Borrowing  involves  interest  costs. A Fund will not purchase
additional securities while its borrowings exceed 5% of its total assets.

Foreign Securities

   
Each of the Funds other than the Treasury  2000 Fund may invest up to 10% of its
total assets in foreign securities.  In addition, the Capital Appreciation Stock
Fund and Growth and Income  Stock Fund may each  invest up to 25% of their total
assets in ADRs while the Balanced  Fund may invest up to 15% of its total assets
in ADRs. For the purposes of these restrictions, ADRs are not considered foreign
securities.
    

Investing  in  foreign  securities  involves  significant  risks  not  typically
associated  with  investing in domestic  securities.  Foreign  securities may be
affected by changes in currency exchange rates,  changes in foreign or U.S. laws
or  restrictions   applicable  to  such  investments  and  in  exchange  control
regulations. Some foreign stock markets have substantially less volume than, for
example,  the New York Stock Exchange and securities of some foreign issuers may
be less  liquid than  securities  of domestic  issuers.  Commissions  and dealer
mark-ups on  transactions  in foreign  securities may be higher than for similar
transactions  in the  United  States.  In  addition,  clearance  and  settlement
procedures  may be different in foreign  countries and, in certain  markets,  on
certain occasions, such procedures have been unable to keep pace with the volume
of   securities   transactions,   thus  making  it  difficult  to  conduct  such
transactions.

Foreign issuers of securities are not generally  subject to uniform  accounting,
auditing and financial  reporting  standards  comparable to those  applicable to
domestic  companies.  There may be less publicly  available  information about a
foreign  issuer than about a domestic one. In addition,  there is generally less
government  regulation  of stock  exchanges,  brokers,  and listed and  unlisted
issuers  in  foreign  countries  than in the United  States.  Furthermore,  with
respect to certain foreign countries,  there is the possibility of expropriation
or  confiscatory  taxation,  imposition  of  withholding  taxes on  dividend  or
interest  payments,  limitations  on the removal of funds or other assets of the
Fund, or political or social instability or diplomatic  developments which could
affect investments in those countries.

   
Investing in foreign government debt securities  involves risks not present when
investing in securities of foreign corporate issuers.  The issuer of the debt or
the  government  authority that controls the repayment of the debt may be unable
or unwilling to repay principal or pay interest when due and holders of the debt
may have limited recourse in the event of such a default.  A sovereign  debtor's
ability or willingness to repay principal or pay interest in a timely manner may
be affected by, among other  factors,  its cash flow,  the extent of its foreign
currency  reserves,  the availability of sufficient foreign exchange on the date
repayment is due, the relative size of the debt service burden to the economy as
whole,  its policy  towards  principal  international  lenders and the political
constraints to which a sovereign debtor may be subject.
    

Many foreign  securities are  represented  by ADRs.  ADRs represent the right to
receive  foreign   securities   deposited  in  a  domestic  bank  or  a  foreign
correspondent  bank.  Prices of ADRs are  quoted in U.S.  dollars,  and ADRs are
traded in the U.S. on exchanges  or  over-the-counter  and are  sponsored by and
issued by domestic  banks.  In general,  there is a large,  liquid market in the
United  States for ADRs  quoted on a national  exchange  or the NASD's  national
market system. The information  available for ADRs is subject to the accounting,
auditing and financial reporting standards of the domestic market or exchange on
which the they are traded,  which  standards  are more uniform and exacting than
those to which many  issuers  of foreign  securities  are  subject.  ADRs do not
eliminate  all of the risk inherent in investing in foreign  securities.  To the
extent that a Fund acquires ADRs through a bank that does not have a contractual
relationship  with the issuer of a foreign  security  underlying  the receipt to
issue and service the receipt,  there may be an increased  possibility  that the
Fund would not become aware of and be able to respond to corporate  actions such
as stock splits or rights  offerings  involving  the foreign  issuer in a timely
manner.  The market  value of ADRs is  dependent  upon the  market  value of the
underlying  securities and  fluctuations in the value of the currencies in which
the underlying security is denominated relative to the U.S. dollar. In addition,
lack of  information  about an issuer of the  underlying  security may result in
inefficiencies  in the  valuation of the related ADR.  However,  by investing in
ADRs rather  than  directly in foreign  securities,  a Fund will avoid  currency
risks during the settlement period for both purchases and sales.

   
Lower-Rated Debt Securities

The Bond Fund may invest in debt  securities  rated lower than the four  highest
rating categories by S&P and/or Moody's.  Such lower-rated  securities generally
carry greater risk of default and are generally  subject to greater market value
fluctuation than debt securities rated in the highest four rating categories. If
held by the Bond Fund in significant  amounts,  such  securities  would increase
financial  risk  and  income  fluctuation.   Lower-rated  debt  securities  have
speculative  characteristics  and  changes  in  economic  conditions  and  other
circumstances  are more  likely  to  weaken  the  capacity  of  issuers  of such
securities to make principal and interest payments than is the case with issuers
of higher rated debt securities.  In some cases, lower-rated debt securities may
be highly speculative, have poor prospects of reaching investment grade standing
or even be in default.  See the  Statement of  Additional  Information  for more
information about lower-rated debt securities.
    

                       MANAGEMENT OF THE ULTRA SERIES FUND

The Trustees

The  overall  responsibility  for the  supervision  of the  affairs of the Ultra
Series  Fund vests in the  Trustees.  CIMCO Inc.  (the  "Investment  Adviser" or
"Adviser") has agreed to handle the day-to-day affairs of the Ultra Series Fund.
The Trustees  meet  periodically  to review the affairs of the Ultra Series Fund
and to establish certain  guidelines which the Investment Adviser is expected to
follow in  implementing  the  investment  objectives  and  policies of the Ultra
Series Fund.

CUNA Mutual Life Insurance Company

The Company is a mutual life insurance company organized under the laws of Iowa,
with its home office at 2000 Heritage Way,  Waverly,  Iowa 50677. The Company is
the transfer agent and the dividend  disbursing agent for the Ultra Series Fund.
The Company owns a one-half interest in CIMCO Inc., the Investment  Adviser.  On
July 1, 1990,  the Company  entered into a permanent  affiliation  with the CUNA
Mutual Insurance  Society,  5910 Mineral Point Road,  Madison,  Wisconsin 53705.
CUNA Mutual Investment Corporation,  5910 Mineral Point Road, Madison, Wisconsin
53705,  is an investment  subsidiary  wholly-owned  by CUNA Mutual.  CUNA Mutual
Investment  Corporation owns a one-half interest in the Investment Adviser. CUNA
Mutual  Investment  Corporation  is the sole owner of CUNA  Brokerage  Services,
Inc., the principal  underwriter for the Ultra Series Fund. Both the Company and
CUNA Mutual are mutual insurance companies owned by their policyholders.

The Investment Adviser

Since the inception of the Ultra Series Fund,  the  Investment  Adviser has been
CIMCO Inc. The  Investment  Adviser was  established  July 6, 1982.  It provides
investment  advice to the Ultra Series Fund,  pension funds,  to the Company and
its  subsidiaries and to CUNA Mutual and its  subsidiaries.  The majority of the
Board of  Directors of the  Investment  Adviser are  independent  of CUNA Mutual
Group. The principal place of business of the Investment Adviser is 5910 Mineral
Point Road, Madison, WI 53705.

The Investment Adviser, pursuant to a Management Agreement,  provides investment
advice for each Fund and provides or arranges for the provision of substantially
all other services required by the Ultra Series Fund through service  agreements
with affiliated and unaffiliated  service  providers.  Such services include all
administrative,  accounting  and  legal  services  as  well as the  services  of
custodians,  transfer agents and dividend disbursing agents. There are, however,
certain expenses that the Ultra Series Fund pays for itself under the Management
Agreement.  These are: fees of the independent Trustees, fees of the independent
auditors,  interest on borrowings by a Fund, any taxes that a Fund must pay, and
any  extraordinary  expenses  incurred  by a Fund or Funds  not in the  ordinary
course of business.  As full  compensation for these services,  the Ultra Series
Fund pays the  Investment  Adviser  a  unitary  fee  computed  at an  annualized
percentage  rate of the average  value of the daily net assets of each series as
set forth in the table below:

<PAGE>

                              Management Fee Table

Series                                              Management Fee
- ------                                              --------------
Capital Appreciation Stock                          0.80 %
Growth & Income Stock                               0.60 %
Balanced                                            0.70 %
Bond                                                0.55 %
Money Market                                        0.45 %
Treasury 2000                                       0.45 %

   
The Ultra Series Fund anticipates that under the Management Agreement, each Fund
will  incur  expenses,   other  than  the  above   management   fees,  equal  to
approximately .01% of its average daily net assets for the remainder of the 1998
fiscal year.
    


                    OFFER, PURCHASE AND REDEMPTION OF SHARES

Pursuant to a Distribution  Agreement,  CUNA Brokerage Services,  Inc. serves as
principal  underwriter for the Ultra Series Fund. CUNA Brokerage Services,  Inc.
has its  principal  place of  business  at 5910  Mineral  Point  Road,  Madison,
Wisconsin 53705.

   
Currently,  each  series of shares is  divided  into Class C and Class Z shares.
Class C and Class Z shares are identical  except for the fact that the net asset
value of each Class C share  reflects a  distribution  fee assessed  against the
assets of each Fund supporting  Class C shares  pursuant to a distribution  plan
(the  "Distribution  Plan"),  described  below,  adopted in accordance with Rule
12b-1 under the Act.  (See also  EXPENSE  TABLE.) Both Classes of each series of
shares of the Ultra  Series Fund are sold in a  continuous  offering.  The Ultra
Series Fund generally offers Class Z shares to separate  accounts of CUNA Mutual
Group insurance  companies and to qualified pension and retirement plans of CUNA
Mutual  Group  companies  and  offers  Class C shares to  separate  accounts  of
insurance  companies and to qualified  pension and retirement plans that are not
affiliated  with CUNA Mutual  Group.  Where either Class of shares is offered to
insurance  company  separate  accounts,  such separate  accounts  support either
variable annuity  contracts or variable life insurance  contracts.  Net purchase
payments  under  such  contracts  are  placed in one of the  subaccounts  of the
separate accounts and assets of each such subaccount are invested in shares of a
Fund of the Ultra Series Fund corresponding to that subaccount.
    

The CUNA Mutual Group  affiliated  separate  accounts and  qualified  pension or
retirement  plans purchase and redeem Class Z shares of the Ultra Series Fund at
net asset value  without  sales or redemption  charges.  Unaffiliated  insurance
company separate accounts and qualified pension or retirement plans purchase and
redeem Class C shares of the Ultra Series Fund at net asset value  without sales
or  redemption  charges  but may be subject to an  additional  distribution  fee
pursuant to the Distribution Plan.

   
On each  day on which a Fund's  net  asset  value  is  calculated,  the  Company
transmits  to the Ultra Series Fund any orders to purchase or redeem the various
Classes and series of shares based on purchase payments,  redemption (surrender)
requests, and transfer requests from owners of variable annuity or variable life
insurance contracts, or annuitants and beneficiaries under such contracts,  that
have been  processed on that day. The Company  purchases  and redeems  shares of
each Fund at that  Fund's net asset value per share  calculated  as of that same
day although such  purchases and  redemptions  may be executed the next morning.
Other insurance  companies  having separate  accounts making  investments in the
Ultra Series Fund follow substantially  identical procedures.  Qualified pension
and retirement  plans may purchase and redeem shares on a similar basis pursuant
to procedures  agreed upon by the Ultra Series Fund,  CUNA  Brokerage  Services,
Inc. and the plan.
    

Owners of individual  variable  annuity  contracts  and variable life  insurance
contracts  should refer to the separate  prospectuses  for such  contracts for a
more detailed description of the procedures whereby a contract owner, annuitant,
or  beneficiary  under such  contracts  may  allocate  his or her  interest in a
separate  account to a subaccount using one of the series of shares of the Ultra
Series  Fund as an  underlying  investment  medium.  Participants  in  qualified
pension or retirement  plans should refer to  appropriate  plan  documents for a
more detailed  description  of the  procedures  whereby they may allocate  their
interest  in the plan to a  subaccount  using one of the series of shares of the
Ultra Series Fund as an underlying investment medium.

Treasury 2000 Fund Only: The Ultra Series Fund anticipates  demand for shares in
the Treasury  2000 Fund to decrease as the portfolio  maturity date  approaches.
Also,  as the  Maturity  Date  approaches,  it may not be  possible  to purchase
additional  Stripped Treasury Securities with a portfolio maturity date which is
the same as the Stripped Treasury Securities in the Fund. Accordingly, the Ultra
Series Fund reserves the right to stop selling  shares in the Treasury 2000 Fund
at any time that the Trustees decide further sale of shares in the Treasury 2000
Fund is not in the best  interest of the Fund.  On or within 12 months  prior to
maturity of the portfolio the securities  will be  liquidated,  and the proceeds
(after  deductions for accrued but unpaid fees, taxes and governmental and other
charges) will be automatically  reinvested at the current Net Asset Value in the
Money Market Fund, unless an owner of a variable contract directs otherwise.  No
charge will be made for  reinvestment of these  proceeds.  No later than 45 days
before the  portfolio  maturity  date,  the Ultra  Series Fund will mail to each
owner of a variable contract with an interest in the Treasury 2000 Fund a Notice
of  Impending  Maturity.  The notice  will state that on the date the  portfolio
matures,  the proceeds  allocable to each owner of a variable  contract  will be
automatically  reinvested  in the  Money  Market  Fund in  accordance  with  the
procedures  set out above.  Proceeds  will be  reinvested in another Fund if the
Ultra Series Fund receives a written request 5 days before portfolio maturity.

The  Distribution  Plan: The Ultra Series Fund has adopted a  Distribution  Plan
pursuant  to Rule  12b-1 of the Act  under  which the Ultra  Series  Fund  bears
certain  expenses   relating  to  the  distribution  of  Class  C  shares.   The
Distribution  Plan  provides  for the Ultra  Series  Fund to pay CUNA  Brokerage
Services,  Inc. a distribution  fee equal,  on an annual basis,  to 0.25% of the
average  daily  net  assets  of each Fund  attributable  to Class C shares.  The
distribution  fee is calculated  and accrued daily and paid quarterly or at such
other  intervals  as the Ultra  Series Fund and CUNA  Brokerage  Services,  Inc.
agree. The distribution fee is paid solely out of each Fund's assets  supporting
Class C shares.  This means that the net asset value of Class C shares  reflects
the daily  accrual of the fee but that the net asset  value of Class Z shares is
not affected by the  distribution  fee and no  distribution  fee is supported by
assets of any Fund representing Class Z shares.

Under the Distribution Plan, CUNA Brokerage  Services,  Inc. receives the entire
amount  of the  distribution  fee and may  spend  any  amount of the fee that it
considers  appropriate  to finance any activity  that is  primarily  intended to
result in the sale of Class C shares.  CUNA  Brokerage  Services,  Inc. does not
have to spend all of the  distribution fee and can spend more than the amount of
the fee to finance activities  intended to result in the sale of Class C shares.
If CUNA Brokerage  Services,  Inc. spends less than the entire amount of the fee
in any period,  it may keep the amounts not spent.  If CUNA Brokerage  Services,
Inc. spends more than the amount of the fee in any period, The Ultra Series Fund
will not reimburse CUNA Brokerage Services, Inc. for the difference.

Activities  primarily  intended to result in the sale of Class C shares include,
among others:  (a) compensation to employees of CUNA Brokerage  Services,  Inc.;
(b) compensation to and expenses,  including overhead and telephone expenses, of
CUNA Brokerage  Services,  Inc.,  other selected  broker-dealers,  and insurance
companies who engage in or support  activities  primarily  intended to result in
the  sale of  Class C  shares;  (c)  the  costs  of  printing  and  distributing
prospectuses,  statements  of  additional  information  and annual  and  interim
reports of the Ultra Series Fund for prospective  Class C shareholders;  (d) the
costs of preparing,  printing and distributing  sales literature and advertising
materials  attributable  to  Class  C  shares;  (e)  expenses  relating  to  the
formulation  and   implementation   of  marketing   strategies  and  promotional
activities  relating  to Class C  shares  such as  direct  mail  promotions  and
television, radio, newspaper, magazine and other mass media advertising; and (f)
the costs of obtaining  such  information,  analyses and reports with respect to
marketing and promotional  activities and investor  accounts as The Ultra Series
Fund may, from time to time, deem advisable.

                               GENERAL INFORMATION

Shareholder Rights

Pursuant to current  interpretations of the Act, the Company will solicit voting
instructions  from  owners  of  variable  annuity  or  variable  life  insurance
contracts  issued by it with respect to any matters that are presented to a vote
of shareholders.  Insurance  companies not affiliated with the CUNA Mutual Group
will generally follow similar  procedures.  On any matter submitted to a vote of
shareholders,  all shares of the Ultra  Series Fund then issued and  outstanding
and entitled to vote shall be voted in the aggregate and not by series or Class,
except for matters  concerning only a series or Class.  Certain matters approved
by a vote of the  shareholders  of the Ultra Series Fund may not be binding on a
series or Class whose  shareholders  have not approved such matter.  This is the
case if the  matter  affects  interests  of that  series or Class  which are not
identical with the interests of all other series and Classes such as a change in
investment  policy,  approval of the Investment  Adviser or a material change in
the  Distribution  Plan  and  failure  by  the  holders  of a  majority  of  the
outstanding  voting securities of the series or Class to approve the matter. The
holder of each share of each  series or Class of stock of the Ultra  Series Fund
shall be  entitled  to one vote for each full  dollar  of net asset  value and a
fractional vote for each fractional  dollar of net asset value attributed to the
shareholder.

The Ultra  Series Fund is not required to hold annual  meetings of  shareholders
and  does  not  plan  to do so.  The  Trustees  may  call  special  meetings  of
shareholders for action by shareholder vote as may be required by the Act or the
Declaration  of Trust.  The Trustees  have the power to alter the number and the
terms of office of the Trustees,  and may lengthen their own terms or make their
terms of unlimited  duration and appoint their  successors,  provided  always at
least a majority of the Trustees  have been elected by the  shareholders  of the
Ultra Series Fund.  The  Declaration  of Trust  provides that  shareholders  can
remove  Trustees  by a vote of  two-thirds  of the  outstanding  shares  and the
Declaration of Trust sets out procedures to be followed.

Inquiries

Any  inquiries  regarding  the Ultra  Series  Fund  should be  directed  to CUNA
Brokerage Services, Inc., 2000 Heritage Way, Waverly, Iowa 50677, (800) 798-5500
or (319) 352-4090.

<PAGE>

Dividends

All dividends  (except those from the Treasury 2000 Fund) are distributed to the
separate  accounts for variable  products and  qualified  pension or  retirement
plans  and then  automatically  reinvested  in the  Ultra  Series  Fund  shares.
Dividends  from the Money  Market  Fund will be  declared  daily and  reinvested
monthly in  additional  full and  fractional  shares of the Money  Market  Fund.
Dividends of ordinary  income from the Capital  Appreciation  Stock,  Growth and
Income  Stock,  Balanced,  and  Bond  Funds,  will be  declared  and  reinvested
quarterly in additional  full and  fractional  shares,  and dividends of capital
gains from these  Funds will be declared  and  reinvested  at least  annually in
additional full and fractional  shares.  In no event will capital gain dividends
be declared and paid more frequently than allowed under SEC rules. Annually, the
Treasury 2000 Fund will declare a consent dividend for income tax purposes.

The Ultra Series Fund Performance

The Ultra  Series Fund may  distribute  sales  literature  showing  total return
performance.  Total return  calculations are based on historical results and are
not intended to indicate  future  performance.  Total return will vary over time
depending on market conditions, assets owned and operating expenses. Information
about the performance of the Ultra Series Fund is contained in the annual report
to shareholders  which may be obtained  without charge from the address shown on
the first page of this Prospectus.

   
Total return  figures  distributed by the Ultra Series Fund will show the change
in value of an  investment  in the Ultra  Series Fund from the  beginning of the
measuring period to the end of the measuring  period.  All dividends and capital
gains are assumed to be immediately  reinvested.  Average annual total return is
calculated  by  determining   the  growth  or  decline  in  value  of  a  $1,000
hypothetical  investment over a stated period and then  calculating the annually
compounded percentage rate that would have produced the same ending value if the
rate of growth or decline in value had been constant  during the entire  period.
The  actual  rate of growth or  decline  varies  over  time,  rather  than being
constant,  so actual  year-to-year  performance will be different from "average"
annual return.  The Ultra Series Fund will show average annual total returns for
1, 3, 5 and 10 year periods (or, if shorter, the period since inception) and may
show actual and average total returns for other  periods.  The Ultra Series Fund
may also show  cumulative  return,  computed by dividing the value at the end of
the period by the value at the beginning of the period.  Cumulative total return
may be shown either as a  percentage  change or as a dollar  value.  Performance
data may be shown in the form of graphs, charts, tables and numerical examples.
    

The Ultra Series Fund may also distribute sales literature showing yield figures
for its Money Market Fund.  Yield figures are based on  historical  earnings and
are not intended to indicate future  performance.  The yield of the Money Market
Fund refers to the income generated by an investment in the Fund over the stated
seven-day period. This income is then annualized,  that is, the amount of income
generated by the  investment  during that week is assumed to be  generated  each
week over a 365-day period and is shown as a percentage of the  investment.  The
effective yield is calculated similarly but, when annualized,  the income earned
is  assumed  to be  reinvested  or  "compounded."  The  effective  yield will be
slightly higher than the yield because of the effect of assumed reinvestment.

The Ultra  Series  Fund may  distribute  sales  literature  comparing  its total
returns to standard  industry  measures,  for example,  the Dow Jones Industrial
Average,  one or more of the Standard & Poor's or Frank  Russell  Company  stock
indexes,  one or more of the Lehman  Brothers bond indexes,  the consumer  price
index, and data published by Lipper Analytical Services,  Morningstar, Inc., and
Ibbotson  Associates.  The Dow  Jones  Industrial  Average  (DJIA)  is a  market
value-weighted,  unmanaged index of 30 large industrial stocks traded on the New
York Stock  Exchange.  The Standard and Poor's and Frank  Russell  Company stock
indexes are  unmanaged,  market value  weighted  indexes of various  industrial,
transportation,  utility  and  financial  companies,  grouped  by size of market
capitalization,  valuation  characteristics  (i.e.  growth  or  value)  or other
attributes. The Lehman Brothers bond indexes represent unmanaged groups of fixed
income   securities  of  various   issuers  and  terms  to  maturity  which  are
representative  of bond  market  performance.  The  consumer  price  index  is a
statistical  measure of changes  in the prices of goods and  services  over time
published by the U.S. Bureau of Labor Statistics. Lipper Analytical Services and
Morningstar,  Inc. are independent  services that monitor  performance of mutual
funds and  insurance  company  separate  accounts.  Lipper  Performance  Summary
Averages  represent  the average  annual total return of all the funds (within a
specified  investment  category)  that  are  covered  by the  Lipper  Analytical
Services Variable  Insurance  Products  Performance  Analysis Service.  Ibbotson
Associates  annually updates "Stocks,  Bonds,  Bills and Inflation" (SBBI) which
compares  historical  investment returns and trends over specified  periods.  To
show how different  types of  investments  have performed over time, a chart has
been included as Appendix A.

The  volatility  of each Fund may be compared to the  volatility of the relevant
market as a whole.  "Beta" is a measure of the sensitivity of a particular asset
or a particular Fund relative to the marketplace in which it is traded. The beta
of the  market  is 1.0 which  serves  as a  benchmark  to  assess  other  assets
including  the six Funds within the Ultra Series Fund.  Beta is a measure of the
degree to which the  return on the asset or the Fund moved  relative  to how the
return of the relevant  market  moved.  A number that is both  positive and less
than 1.0 means that the asset or Fund moved in the same  direction as the market
but to a smaller degree.  In other words, a beta of less than 1.0 indicates less
volatility (less investment risk) than the market.

Standard  deviation  measures the volatility of actual periodic returns around a
trendline  of  average  returns.  For  example,  a  portfolio  that  grew over a
five-year  period at an  average  annual  total  return  of 10% with a  standard
deviation of 15% would be much more  volatile  (would  involve  more  investment
risk) than a portfolio  that grew at an average annual total return of 8% with a
standard  deviation of 5%. The latter  portfolio might meet the investment needs
of a risk averse investor better than the former portfolio.

Tax Status

The Ultra  Series Fund intends to qualify as a  "regulated  investment  company"
under  Subchapter  M of the  Internal  Revenue  Code of 1986,  as  amended  (the
"Code").  The Ultra Series Fund expects to distribute  all of its net investment
income and net realized capital gains to its shareholders (the separate accounts
and qualified plans) to avoid imposition of an Ultra Series Fund-level income or
excise tax. The Ultra  Series Fund will inform its  shareholders  (the  separate
accounts  and  qualified  plans) of the amount and nature of all  distributions.
Each Fund is treated as a separate  entity for federal income tax purposes,  and
therefore,  the investments  and results of the Funds are determined  separately
for  purposes of  determining  whether  the Ultra  Series  Fund  qualifies  as a
"regulated  investment  company" and for purposes of determining  net investment
income or loss and net realized capital gain or loss. Additional tax information
appears in the Statement of Additional Information.

Under the Code, no tax is imposed on an insurance company with respect to income
of a qualifying  separate  account  properly  allocable to the value of eligible
variable  annuity or variable  life  insurance  contracts.  Please  refer to the
appropriate tax disclosure in the prospectuses related to a separate account and
to its related  variable  annuity or variable life  insurance  contract for more
information on the taxation of life insurance companies,  separate accounts,  as
well as the tax  treatment  of variable  annuity  and  variable  life  insurance
contracts and the holders thereof.

Each Fund  intends to comply with the  diversification  requirements  of section
817(h) of the Code and the regulations  thereunder.  These  requirements  are in
addition to the diversification  requirements imposed on each Fund by Subchapter
M and the Act.  These  requirements  place certain  limitations on the assets of
each separate account that may be invested in the securities of a single issuer.
Because section 817(h) and the regulations  thereunder  treat each Fund's assets
as assets of the  related  separate  account,  these  limitations  apply to each
Fund's assets that may be invested in the securities of a single issuer. Failure
of a Fund to satisfy the section 817(h) requirements would result in taxation of
the separate accounts, the insurance company, the variable annuity contracts and
variable life insurance contracts,  and tax consequences to the holders thereof,
other than as described in the respective variable contract prospectuses.

Net Asset Value

Funds'  shares are sold and  redeemed  at a price equal to the shares' Net Asset
Value with no sales or other  charges.  Net Asset Value is  determined by adding
the total current values of each Fund's securities, cash, receivables, and other
assets  and then  subtracting  all  liabilities.  Net  Asset  Value per share is
calculated on each  Valuation Day at the earlier of 3:00 p.m.  Central  Standard
Time or the close of the New York Stock Exchange.

   
A Valuation  Day is any day the New York Stock  Exchange  is open for  business,
except  for  Company  holidays,  including  Thanksgiving,  Christmas,  the final
scheduled workday preceding Christmas,  New Year's Day and Independence Day. The
holiday  will be  observed  on the day itself  for those days which fall  Monday
through  Friday,  the day  immediately  preceding for those days which fall on a
Saturday,  and the day  immediately  following  for those  days  which fall on a
Sunday.  Federal securities regulations will be followed in case of an emergency
which makes  valuation  extremely  difficult,  for  example,  fire,  blizzard or
tornado.
    

Funds'  shares  will be  purchased  and  redeemed  at the Net Asset  Value  next
determined after receipt of a sales order or request for redemption. The Capital
Appreciation Stock, Growth and Income Stock,  Balanced,  Bond, and Treasury 2000
Funds  will  value  their  assets  based on market  value if such a value can be
established.  If  not,  a good  faith  determination  will  be made by or at the
direction of the Trustees.  Short-term  investments having maturities of 60 days
or less will be valued at amortized  cost.  The Money Market Fund will value its
portfolio  assets using the  amortized  cost method.  This method is designed to
stabilize  the Net Asset Value at $1.00 per share.  More  information  about the
calculation of Net Asset Value is in the Statement of Additional Information.

   
                             PREPARING FOR YEAR 2000

Like all financial  service  providers,  the Company and its affiliates  utilize
systems that may be affected by Year 2000  transition  issues,  and they rely on
service providers,  including  administrators and investment managers, that also
may be affected.  The Company and its affiliates have developed,  and are in the
process of  implementing,  a Year 2000 transition  plan, and are confirming that
its service providers are also so engaged.  The resources that are being devoted
to this  effort are  substantial.  It is  difficult  to predict  with  precision
whether the negative impact on the Company or its affiliates. However, as of the
date of this  prospectus,  it is not  anticipated  that Owners  will  experience
negative  effects  on  their  investment,  or  on  their  services  provided  in
connection therewith,  as a result of Year 2000 transition  implementation.  The
Company and its affiliates  currently anticipate that their systems will be Year
2000 compliant on or about December 31, 1998, but there can be no assurance that
the Company will be successful, or that interaction with other service providers
will not impair the Company's or its affiliates' services at that time.
    
                                   APPENDIX A

   
The chart  depicts  the  growth of a dollar  invested  in common  stocks,  small
company  stocks,  long-term  government  bonds,  Treasury  bills and an index of
inflation  over the  period  from  the end of 1925 to the end of  1997.  Results
assume  reinvestment  of  dividends  on stocks or coupons on bonds and no taxes.
Transaction costs are not accounted for except in the small stock index starting
in  1982.  The  chart  was  prepared  to show  changes  in the  market  value of
securities,  not returns on variable life and annuity contracts.  The chart does
not reflect  any of the charges  made at the  separate  account  level or at the
mutual fund level of a variable contract.
    

The chart  shows how stocks,  bonds and bills have  performed  in the past.  The
chart illustrates the basic relationship between risk and return. Treasury bills
had the least investment risk and the lowest investment  return.  Stocks had the
most  investment  risk and the  highest  investment  return.  The  common  stock
performance  shown is based on the Standard and Poor's 500 stock index, a market
value  weighted  index of  industrial,  financial,  utility  and  transportation
stocks.  The chart is a historical record of the past. It is not a projection of
future return.


At this place,  the document shows a graphic  representation  of the information
set forth above.

   
Used with  permission.  (C) 1998 Ibbotson  Associates,  Inc. Al rights reserved.
[Certain  portions of this work were derived from copyrighted  works of Roger G.
Ibbotson and Rex Sinquefield.]
    
<PAGE>
                       STATEMENT OF ADDITIONAL INFORMATION

                                ULTRA SERIES FUND
                                2000 Heritage Way
                               Waverly, Iowa 50677
                                 (319) 352-4090


THIS IS NOT A PROSPECTUS.  THIS  STATEMENT OF ADDITIONAL  INFORMATION  SHOULD BE
READ IN  CONJUNCTION  WITH THE  PROSPECTUS  FOR THE ULTRA  SERIES  FUND WHICH IS
REFERRED TO HEREIN.


   
THE PROSPECTUS  CONCISELY  SETS FORTH  INFORMATION  THAT A PROSPECTIVE  INVESTOR
SHOULD KNOW BEFORE INVESTING.  FOR A COPY OF THE PROSPECTUS,  DATED MAY 1, 1998,
CALL OR WRITE CUNA BROKERAGE  SERVICES,  INC., 2000 HERITAGE WAY, WAVERLY,  IOWA
50677, (319) 352-4090, (800) 798-5500.


                                   MAY 1, 1998
    


<PAGE>


                             TABLE OF CONTENTS                             PAGE


GENERAL INFORMATION...........................................................1

INVESTMENT PRACTICES..........................................................1

Lending Portfolio Securities..................................................1
Restricted Securities.........................................................1
Foreign Securities............................................................2
Put and Call Options..........................................................2
Financial Futures and Related Options.........................................3
Stock Index Futures and Related Options.......................................4
Bond Fund Practices...........................................................4

INVESTMENT LIMITATIONS........................................................5

PORTFOLIO TURNOVER............................................................6

LOWER-RATED DEBT SECURITIES...................................................6

MANAGEMENT OF THE FUND........................................................7

Officers and Trustees.........................................................7
Trustees Compensation.........................................................8
Substantial Shareholders......................................................8
Beneficial Owners.............................................................8

THE INVESTMENT ADVISER........................................................9

EXPENSES OF THE FUND.........................................................11

DISTRIBUTION PLAN AND AGREEMENT..............................................10

CUSTODIAN....................................................................11

INDEPENDENT AUDITORS.........................................................11

BROKERAGE....................................................................11

HOW SECURITIES ARE OFFERED...................................................12

Distributor..................................................................12
Transfer Agent...............................................................12

NET ASSET VALUE OF SHARES....................................................12

Money Market Fund............................................................12
Capital Appreciation Stock, Growth and Income Stock, Balanced, Bond, 
  and Treasury 2000 Funds....................................................13

DIVIDENDS, DISTRIBUTIONS AND TAXES...........................................13

Options and Futures Transactions.............................................15
Straddles....................................................................15

CALCULATION OF YIELDS AND TOTAL RETURNS......................................16

Money Market Fund Yields.....................................................15
Other Fund Yields............................................................16
Average Annual Total Returns.................................................17
Other Total Returns..........................................................17

DESCRIPTION OF BOND RATINGS (AS PUBLISHED BY THE RATING SERVICES)............18

DESCRIPTION OF COMMERCIAL PAPER RATINGS (AS PUBLISHED BY THE RATING SERVICES)19

FINANCIAL STATEMENTS.........................................................19

<PAGE>

                               GENERAL INFORMATION

The Ultra  Series  Fund is an  investment  company  consisting  of six  separate
investment  portfolios  or funds (each,  a "Fund") each of which has a different
investment  objective(s).  Each  Fund  is  a  diversified,  open-end  management
investment company,  commonly known as a mutual fund. The six Funds are: Capital
Appreciation Stock, Growth and Income Stock,  Balanced,  Bond, Money Market, and
Treasury  2000.  The  Ultra  Series  Fund was  organized  under  the laws of the
Commonwealth  of  Massachusetts  on September 16, 1983,  and is a  Massachusetts
Business Trust. Under  Massachusetts law,  shareholders of a business trust may,
under  certain  circumstances,  be held  personally  liable as partners  for the
obligations  of the Ultra  Series Fund.  The  Declaration  of Trust  contains an
express disclaimer of shareholder liability for acts or obligations of the Ultra
Series  Fund  and  requires  that  notice  of such  disclaimer  be given in each
instrument entered into or executed by the Ultra Series Fund. The Declaration of
Trust provides for indemnification out of the Ultra Series Fund property for any
shareholder held personally liable for the obligations of the Ultra Series Fund.
Thus,  the  risk  of a  shareholder  incurring  financial  loss  on  account  of
shareholder liability is limited to circumstances in which the Ultra Series Fund
itself would be unable to meet its obligations.

                              INVESTMENT PRACTICES

The Ultra Series Fund Prospectus describes the investment objective and policies
of each of the six  Funds.  The  following  information  is  provided  for those
investors wishing to have more comprehensive  information than that contained in
the Prospectus.  Within the past year, no Fund has employed any of the following
practices: lending of portfolio securities,  investing in restricted securities,
investing in foreign securities,  investing in options, financial futures, stock
index futures and related options.  No Fund has a current intention of employing
these practices in the foreseeable future.

If the Ultra Series Fund enters into futures  contracts or call options thereon,
reverse repurchase agreements,  firm commitment agreements or standby commitment
agreements,  the  Ultra  Series  Fund  will  obtain  approval  from the Board of
Trustees to  establish a  segregated  account  with the  custodian  of the Ultra
Series Fund. The segregated  account will hold liquid assets such as cash,  U.S.
government  assets  and high  grade  debt  obligations.  The  cash  value of the
segregated  account  will be not less  than  the  market  value  of the  futures
contracts  and  call  options  thereon,  reverse  repurchase  agreements,   firm
commitment agreements and standby commitment agreements.

Lending Portfolio Securities

All Funds,  except the Money Market Fund,  may lend portfolio  securities.  Such
loans  will be made  only  in  accordance  with  guidelines  established  by the
Trustees and on the request of broker-dealers or institutional  investors deemed
qualified,  and only when the borrower agrees to maintain cash or U.S.  Treasury
bills as  collateral  with the Fund  equal at all times to at least  100% of the
value of the securities. The Fund will continue to receive interest or dividends
on the securities loaned and will, at the same time, earn an agreed-upon  amount
of interest  on the  collateral  which will be  invested  in readily  marketable
short-term  obligations of high quality.  The Fund will retain the right to call
the loaned  securities and intends to call loaned voting securities if important
shareholder meetings are imminent. Such security loans will not be made if, as a
result,  the  aggregate  of such  loans  exceeds  30% of the value of the Fund's
assets. The Fund may terminate such loans at any time. While there may be delays
in recovery of loaned securities or even a loss of rights in collateral supplied
should the borrower fail financially, loans will be made only to firms deemed by
the  Investment  Adviser to be in good standing and will not be made unless,  in
the judgment of the Investment Adviser, the consideration to be earned from such
loans would justify the risk.

Restricted Securities

   
Each Fund, except the Money Market and Treasury 2000 Funds, may invest up to 10%
of their total assets in restricted securities. Securities regulations limit the
resale of  restricted  securities  which  have  been  acquired  through  private
placement  transactions,  directly  from the  issuer or from  security  holders,
generally  at  higher  yields  or on terms  more  favorable  to  investors  than
comparable publicly traded securities. Privately placed securities are often not
readily  marketable  and  ordinarily  can be sold only in  privately  negotiated
transactions  to a limited  number of  purchasers  or in public  offerings  made
pursuant to an effective  registration  statement  under the  Securities  Act of
1933.  Private  or  public  sales of such  securities  by the  Fund may  involve
significant delays and expense.  Private sales require  negotiations with one or
more  purchasers and generally  produce less  favorable  prices than the sale of
comparable unrestricted securities.  Public sales generally involve the time and
expense  of  preparing  and  processing  a  registration   statement  under  the
Securities Act of 1933 and may involve the payment of underwriting  commissions;
accordingly,  the  proceeds  may be less  than  the  proceeds  from  the sale of
securities of the same class which are freely marketable.  Restricted securities
in each Fund will be valued at fair value as  determined  in good faith by or at
the direction of the Trustees for purposes of  determining  the Fund's Net Asset
Value. Such securities,  when possible, will be valued on a comparative basis to
securities with similar characteristics for which market prices are available.
    

<PAGE>

Foreign Securities

   
All Funds,  except the  Treasury  2000 Fund,  may invest in foreign  securities.
Investment in foreign issuers involves  investment risks that are different,  in
some  respects,  from an investment  in U.S.  domestic  issuers.  Such risks may
include  foreign  political  and  economic   developments.   Publicly  available
information  concerning  issuers  located  outside the United  States may not be
comparable  in scope  or  depth of  analysis  to that  generally  available  for
publicly  held U.S.  issuers.  Accounting  and auditing  practices and financial
reporting  requirements  may vary  significantly  from  country to  country  and
generally  are  not  comparable  to  those  applicable  to  publicly  held  U.S.
corporations.  In the event of default,  debt obligations of foreign issuers may
be  difficult  to enforce.  The  Investment  Adviser  will make every  effort to
analyze potential investments in foreign issuers on the same basis as the rating
services analyze  domestic issuers but because public  information is not always
comparable  to that  available  on domestic  issuers,  this may not be possible.
Therefore,  while  the  Investment  Adviser  will  make  every  effort to select
investments in foreign securities on the same basis relative to quality and risk
as its investments in domestic securities,  this may not always be possible.  No
Fund will invest more than 10% of its total assets in foreign  securities.  ADRs
are not considered  foreign  securities for this purpose.  However,  the Capital
Appreciation Stock Fund and Growth and Income Stock Fund may invest up to 25% of
assets,  and the  Balanced  Fund may  invest  up to 10% of  assets  in  American
Depository Receipts.
    

Put and Call Options

All Funds,  except the Money Market Fund,  may engage in the purchase,  sale and
writing of put and call options that are traded on U.S.  exchanges and boards of
trade. A call option is a contract  (generally  having a duration of nine months
or less)  pursuant  to which the  purchaser  of the call  option in return for a
premium  paid,  has the right to buy the security or instrument  underlying  the
option at a specified  exercise price at any time during the term of the option.
The writer of the call option,  who receives  the premium,  has the  obligation,
upon exercise of the option,  to deliver the  underlying  security or instrument
against payment of the exercise price during the option period.  A put option is
a similar contract which gives the purchaser of the put option,  in return for a
premium,  the right to sell the underlying security or instrument at a specified
price  during the term of the option.  The writer of the put,  who  receives the
premium,  has the obligation to buy the underlying security or instrument,  upon
exercise, at the exercise price during the option period.

The  writing  of a call  option is  "covered"  if the Fund  owns the  underlying
security  or  instrument  covered by the call or has an absolute  and  immediate
right  to  acquire  that  security  or  instrument   without   additional   cash
consideration (or for additional cash consideration held in a segregated account
by its custodian) upon conversion or exchange of other securities or instruments
held in its portfolio.  The writing of a call option is also covered if the Fund
holds a call on an  equivalent  amount of the same security or instrument as the
call written where the exercise  price of the call held is equal to or less than
the exercise price of the call written or greater than the exercise price of the
call written if the difference is maintained by the Fund in cash, U.S.  Treasury
bills or other high grade  short-term  obligations in a segregated  account with
its  custodian.  The writing of a put option is "covered" if the Fund  maintains
cash,  U.S.  Treasury bills or other high grade  short-term  obligations  with a
value equal to the exercise price in a segregated account with its custodian, or
else holds a put on an  equivalent  amount of the same security or instrument as
the put written where the exercise  price of the put held is equal to or greater
than the exercise price of the put written. The premium paid by the purchaser of
an option will reflect,  among other things,  the  relationship  of the exercise
price  to the  market  price  and  volatility  of  the  underlying  security  or
instrument,  the remaining term of the option,  supply and demand,  and interest
rates.

If the writer of an option wishes to terminate his  obligation,  he may effect a
"closing purchase  transaction." This is accomplished by buying an option of the
same kind as the option previously  written.  The effect of the purchase is that
the writer's position will be canceled by the clearing  corporation.  However, a
writer may not effect a closing purchase  transaction after it has been notified
of the  exercise of an option.  Likewise,  an  investor  who is the holder of an
option may  liquidate  his position by effecting a "closing  sale  transaction."
This is  accomplished  by  selling  an  option  of the same  kind as the  option
previously purchased.  There is no guarantee that either a closing purchase or a
closing sale transaction can be effected.

Effecting a closing transaction in the case of a written call option will permit
the Fund to write another call option on the  underlying  security or instrument
with either a different  exercise  price or  expiration  date or both, or in the
case of a written put option will permit the Fund to write another put option to
the extent  that the  exercise  price  thereof is secured by  deposited  cash or
short-term  securities.  Also,  effecting a closing  transaction will permit the
cash or proceeds  from the  concurrent  sale of any  securities  or  instruments
subject to the option to be used for other Fund investments. If the Fund desires
to sell a particular  security or instrument  from its portfolio on which it has
written  a call  option,  it will  effect  a  closing  transaction  prior  to or
concurrent with the sale of the security or instrument.

The Fund  may  write  put and call  options  only if they are  covered,  and the
options must remain covered so long as a Fund is obligated as a writer.

<PAGE>

An option position may be closed out only on an exchange or board of trade which
provides a secondary  market for an option of the same kind.  Although  the Fund
will  generally  purchase or write only those options for which there appears to
be an active  secondary  market,  there is no assurance that a liquid  secondary
market on an exchange or board of trade will exist for any particular option, or
at any particular  time, and for some options no secondary market on an exchange
or board of trade may exist.  In such event it might not be  possible  to effect
closing transactions in particular options,  with the result that the Fund would
have to  exercise  its  options in order to realize  any profit and would  incur
brokerage  commissions upon the exercise of call options and upon the subsequent
disposition  of  underlying  securities  or  instruments  acquired  through  the
exercise  of call  options or upon the  purchase  of  underlying  securities  or
instruments  for the  exercise of put  options.  If the Fund,  as a covered call
option writer, is unable to effect a closing purchase transaction in a secondary
market, it will not be able to sell the underlying  security or instrument until
the option  expires or it delivers the  underlying  security or instrument  upon
exercise.

The use of put and call  options is  restricted  to no more than twenty  percent
(20%) of the net assets in the Fund using such option.

Financial Futures and Related Options

The  Balanced,  Bond,  and  Treasury  2000 Funds may engage in  transactions  in
financial  futures  contracts or related  options,  but only as a hedge  against
changes in the values of securities held in the Fund's portfolio  resulting from
market conditions or which it intends to purchase and where the transactions are
economically  appropriate  to the  reduction  of risks  inherent  in the ongoing
management  of the Fund.  A Fund may not purchase or sell  financial  futures or
purchase related options if, immediately thereafter,  more than one-third of its
net  assets  would be  hedged.  In  addition,  a Fund may not  purchase  or sell
financial futures or purchase related options if,  immediately  thereafter,  the
sum of the amount of margin  deposits on the Fund's existing  futures  positions
and  premiums  paid for related  options  would  exceed five percent (5%) of the
market value of the Fund's total assets.

Unlike when a Fund  purchases or sells a security,  no price is paid or received
by the Fund upon the purchase or sale of a futures contract. Initially, the Fund
will be required  to deposit  with the  custodian  under the name of the futures
commission  merchant an amount of cash or U.S. Treasury bills,  known as initial
margin.  The nature of initial margin in futures  transactions is different from
that of margin in securities transactions in that a futures contract margin does
not involve  the  borrowing  of funds by a customer to finance the  transaction.
Rather,  the  initial  margin is in the nature of a  performance  bond or a good
faith deposit on a contract  which is returned to the Fund upon  termination  of
the Fund's contract  assuming all contractual  obligations  have been satisfied.
Subsequent payments, called "variation margin," to or from the custodian will be
made on a daily basis as the price of the  underlying  securities or instruments
fluctuates  making the long and short positions in the futures  contract more or
less  valuable,  a process  known as "mark to the  market." At any time prior to
expiration of the futures contract,  the Fund may elect to close the position by
taking an opposite  position which will operate to terminate the Fund's position
in the futures contract. A final determination of variation margin is then made,
additional  cash is required to be paid by or released to the Fund, and the Fund
realizes a loss or a gain.

There are several  risks in  connection  with the use of financial  futures as a
hedging  device.  One risk arises because of the imperfect  correlation  between
movements in the price of the futures  contracts  and  movements in the price of
the securities or instruments  which are the subject of the hedge.  The price of
the futures contract may move more than or less than the price of the securities
or  instruments  being hedged.  If the price of the futures  contract moves less
than the price of the  securities  or  instruments  which are the subject of the
hedge, the hedge will not be fully effective but, if the price of the securities
or  instruments  being hedged has moved in an  unfavorable  direction,  the Fund
would be in a better  position than if it had not hedged at all. If the price of
the securities being hedged has moved in a favorable  direction,  this advantage
will be partially  offset by the futures.  If the price of the futures  contract
moves more than the price of the  securities or  instruments  being hedged,  the
Fund will experience  either a loss or a gain on the futures contract which will
not be  completely  offset  by  movements  in the  price  of the  securities  or
instruments.  To compensate  for the imperfect  correlation  of movements in the
price of  securities or  instruments  being hedged and movements in the price of
the futures contracts, the Fund may buy or sell financial futures contracts in a
greater  dollar amount than the dollar amount of securities  being hedged if the
historical volatility of the prices of such securities has been greater than the
historical volatility of the futures. Conversely, the Fund may buy or sell fewer
financial  futures  contracts if the  historical  volatility of the price of the
securities being hedged is less than the historical volatility of the futures.

The financial impact of any use of financial  futures is subject to movements in
interest rates. For example,  if the Fund is hedged against the possibility of a
rise in  interest  rates,  adversely  affecting  the value of bonds  held in its
portfolio,  and bond prices increase instead,  the Fund will lose part or all of
the benefit of the increased  value of its bonds which it has hedged  because it
will have  offsetting  losses in its futures  positions.  In  addition,  in such
situations, if the Fund has insufficient cash, it may have to sell securities to
meet daily variation margin  requirements.  Such sales of securities may be, but
will not  necessarily  be, at increased  prices which reflect the rising market.
The Fund may have to sell securities at a time when it may be disadvantageous to
do so.

<PAGE>

Stock Index Futures and Related Options

   
The Capital  Appreciation Stock, Growth and Income Stock, and Balanced Funds may
engage in transactions in stock index futures contracts or related options,  but
only as a hedge against changes  resulting from market  conditions in the values
of securities held in the Fund's portfolio or which the Fund intends to purchase
and where the  transactions  are  economically  appropriate  to the reduction of
risks inherent in the ongoing management of the Fund. A Fund may not purchase or
sell stock index futures or purchase related options if, immediately thereafter,
more than one-third of its net assets would be hedged.  In addition,  a Fund may
not  purchase  or sell stock  index  futures or  purchase  related  options  if,
immediately  thereafter,  the sum of the amount of margin deposits on the Fund's
existing  futures  positions and premiums paid for related  options would exceed
twenty percent (20%) of net assets.
    

Unlike when a Fund  purchases or sells a security,  no price is paid or received
by the Fund upon the purchase or sale of a futures contract. Initially, the Fund
will be required  to deposit  with the  custodian  under the name of the futures
commission  merchant an amount of cash or U.S.  Treasury  bills known as initial
margin.  The nature of initial margin in futures  transactions is different from
that of margin in security transactions in that futures contract margin does not
involve  the  borrowing  of funds by a  customer  to finance  the  transactions.
Rather,  the initial margin is in the nature of a performance bond or good faith
deposit on the contract  which is returned to the Fund upon  termination  of the
futures  contract  assuming all  contractual  obligations  have been  satisfied.
Subsequent payments,  called "variation margin," to or from the custodian,  will
be made on a daily basis as the price of the underlying  stock index  fluctuates
making  the  long and  short  positions  in the  futures  contract  more or less
valuable,  a  process  known  as  "mark to the  market."  At any  time  prior to
expiration of the futures contract,  the Fund may elect to close the position by
taking an opposite  position which will operate to terminate the Fund's position
in the futures contract. A final determination of variation margin is then made,
additional  cash is required to be paid by or released to the Fund, and the Fund
realizes a loss or a gain.

There are several risks in  connection  with the use of stock index futures as a
hedging  device.  One risk arises because of the imperfect  correlation  between
movements in the price of the stock index futures  contract and movements in the
price of the  securities  which are the  subject of the hedge.  The price of the
stock index  future may move more than or less than the price of the  securities
being hedged.  If the price of the stock index futures  contract moves less than
the price of the securities  which are the subject of the hedge,  the hedge will
not be fully  effective  but, if the price of the  securities  being  hedged has
moved in an unfavorable  direction,  the Fund would be in a better position than
if it had not hedged at all.  If the price of the  securities  being  hedged has
moved in a favorable  direction,  this advantage will be partially offset by the
futures contract. If the price of the futures contract moves more than the price
of the stock,  the Fund will  experience  either a loss or a gain on the futures
contract  which will not be  completely  offset by movements in the price of the
securities  which are the subject of the hedge.  To compensate for the imperfect
correlation  of movements in the price of securities  being hedged and movements
in the price of the stock  index  futures,  the Fund may buy or sell stock index
futures  contracts  in a  greater  dollar  amount  than  the  dollar  amount  of
securities  being  hedged if the  historical  volatility  of the  prices of such
securities  has  been  greater  than the  historical  volatility  of the  index.
Conversely,  the Fund may buy or sell fewer stock index futures contracts if the
historical  volatility of the price of the securities  being hedged is less than
the historical volatility of the stock index.

The  financial  impact of any use of stock index futures is subject to movements
in the direction of the market. For example,  if the Fund has hedged against the
possibility of a decline in the market  adversely  affecting  stocks held in its
portfolio and stock prices increase  instead,  the Fund will lose part or all of
the benefit of the increased  value of its stocks which it has hedged because it
will have  offsetting  losses in its futures  positions.  In  addition,  in such
situations, if the Fund has insufficient cash, it may have to sell securities to
meet daily variation margin  requirements.  Such sales of securities may be, but
will not  necessarily  be, at increased  prices which reflect the rising market.
The Fund may have to sell securities at a time when it may be disadvantageous to
do so.

Compared to the use of stock  index  futures,  the  purchase of options on stock
index futures involves less potential risk because the maximum amount at risk is
the premium paid for the options (plus transaction costs). However, there may be
circumstances  when the use of an option on a stock index future would result in
a loss when the use of a stock index future would not,  such as when there is no
movement in the level of the index.

Bond Fund Practices

   
The Bond Fund will  emphasize  investment  grade,  primarily  intermediate  term
securities. If an investment grade security is downgraded by the rating agencies
or  otherwise  falls  below  the  investment  quality  standards  stated  in the
Prospectus,  management will retain that instrument only if management  believes
it is in the best  interest  of the Fund.  The Fund may invest  more than twenty
percent (20%) of total assets in corporate debt securities  which are not in the
four highest  ratings by Standard and Poor's  Corporation  or Moody's  Investors
Service,  Inc. The Fund may also invest in debt  options,  interest rate futures
contracts, and options on interest rate futures contracts.
    

The Fund may  utilize  interest  rate  futures and options to manage the risk of
fluctuating  interest rates.  These  instruments will be used to control risk or
obtain additional income and not with a view toward  speculation.  The Fund will
invest only in futures and options which are traded on U.S.  exchanges or boards
of trade.

In the fixed income securities market, purchases of some issues are occasionally
made under firm (forward) commitment  agreements.  Purchases of securities under
such  agreements  can involve  risk of loss due to changes in the market rate of
interest  between the commitment  date and the  settlement  date. As a matter of
operating  policy,  the Fund  will  not  commit  itself  to  forward  commitment
agreements  in an amount in excess of 25% of net  assets  and will not engage in
such  agreements  for  leveraging  purposes.  For  purposes of this  limitation,
forward  commitment  agreements are defined as those  agreements  involving more
than five business days between the commitment date and the settlement date.


                             INVESTMENT LIMITATIONS

The Ultra  Series Fund has  adopted  the  following  restrictions  and  policies
relating  to the  investment  of assets and the  activities  of each  Fund.  The
policies in this  INVESTMENT  LIMITATION  section are fundamental and may not be
changed  for a Fund  without  the  approval  of the holders of a majority of the
outstanding  votes of that Fund (which for this purpose and under the Investment
Company  Act of 1940 (the  "Act")  means the lesser of (i)  sixty-seven  percent
(67%) of the outstanding votes  attributable to shares  represented at a meeting
at which more than fifty percent (50%) of the outstanding votes  attributable to
shares are  represented or (ii) more than fifty percent (50%) of the outstanding
votes  attributable  to shares).  None of the Funds within the Ultra Series Fund
may:

1.       Borrow  money in excess of  one-third  of the value of its total assets
         taken at market value  (including  the amount  borrowed)  and then only
         from  banks as a  temporary  measure  for  extraordinary  or  emergency
         purposes.  This borrowing provision is not for investment leverage, but
         solely to facilitate  management of a Fund by enabling the Fund to meet
         redemption requests where the liquidation of an investment is deemed to
         be  inconvenient  or  disadvantageous.  Monies used to pay  interest on
         borrowed  funds will not be available for  investment.  A Fund will not
         make additional investments while it has borrowings outstanding.

2.       Underwrite securities of other issuers,  except that a Fund may acquire
         portfolio  securities under circumstances  where, if the securities are
         later  publicly  offered or sold by the Fund, it may be deemed to be an
         underwriter for purposes of the Securities Act of 1933.

3.       Invest over  twenty-five  percent  (25%) of assets  taken at its market
         value in any one industry.  Securities issued or guaranteed by the U.S.
         Government,  its agencies or instrumentalities,  or instruments secured
         by these money market instruments, such as repurchase agreements, shall
         not be considered investments in any one industry for purposes of these
         rules.  Telephone,  gas,  and  electric  utility  industries  shall  be
         considered separate industries.

4.       Purchase  or sell  commodities,  commodity  contracts  (except  futures
         contracts),  foreign  exchange or real estate,  including  interests in
         real  estate   investment  trusts  whose  securities  are  not  readily
         marketable  or  invest  in oil,  gas or other  mineral  development  or
         exploration  programs.  (This  does  not  prohibit  investment  in  the
         securities of corporations which own interests in commodities,  foreign
         exchange,  real  estate or oil,  gas or other  mineral  development  or
         exploration programs.)

5.       Invest more than five percent (5%) of the value of the assets of a Fund
         in securities of any one issuer,  except in the case of the  securities
         issued  or  guaranteed  by  the  U.S.   Government,   its  agencies  or
         instrumentalities.

6.       Invest in securities of a company for the purpose of exercising control
         or management.

7.       Invest  in  securities  issued  by  any  other  registered   investment
         companies in excess of five percent (5%) of total assets, nor in excess
         of three percent (3%) of the assets of the acquired investment company.
         Not more than ten percent  (10%) of total  assets taken at market value
         will be invested in such securities.

8.       Purchase or sell real  estate,  except a Fund may  purchase  securities
         which are issued by companies  which invest in real estate or interests
         therein.

9.       Issue senior securities as defined in the Act, except insofar as a Fund
         may be  deemed  to have  issued  a senior  security  by  reason  of (a)
         entering  into  any  repurchase  agreement;   (b)  borrowing  money  in
         accordance with  restrictions  described above;  (c) lending  portfolio
         securities;  (d)  purchasing  securities  on a  when-issued  or delayed
         delivery basis; or (e) accommodating short sales. If the asset coverage
         falls below three  hundred  percent  (300%),  when taking into  account
         items (a) through (e), a Fund may be required to liquidate  investments
         to be in compliance with the Act.

10.      Lend  portfolio  securities  in excess of thirty  percent  (30%) of the
         value of its total assets.  Any loans of portfolio  securities  will be
         made  according to guidelines  established  by the Trustees,  including
         maintenance  of  collateral of the borrower at least equal at all times
         to the current market value of the securities loaned.

11.      Invest in illiquid assets (which include repurchase  agreements that do
         not mature within seven (7) days, non-negotiable time deposits maturing
         in over seven (7) days, restricted securities, and other securities for
         which  there is no ready  market) in an amount in excess of ten percent
         (10%) of the value of its total assets.

12.      Make  loans  (the  acquisition  of bonds,  debentures,  notes and other
         securities  as permitted by the  investment  objectives of a Fund shall
         not be  deemed  to be the  making  of  loans)  except  that a Fund  may
         purchase  securities  subject to repurchase  agreements  under policies
         established by the Trustees.

13.      Invest in foreign securities in excess of ten percent (10%) of the
         value of its total assets.

Except for the  limitations  on borrowing  from banks,  if the above  percentage
restrictions  are  adhered to at the time of  investment,  a later  increase  or
decrease in such  percentage  resulting from a change in values of securities or
amount of net assets will not be  considered a violation of any of the foregoing
restrictions.

The Money Market Fund may not write put or call options,  purchase  common stock
or other equity  securities or purchase  securities on margin or sell short. The
Capital  Appreciation  Stock,  Growth  and Income  Stock,  Balanced,  Bond,  and
Treasury  2000  Funds may not  purchase  securities  on  margin  or sell  short.
However,  each Fund may obtain such  short-term  credits as may be necessary for
the clearance of  transactions  and may make margin  payments in connection with
transactions  in futures  and related  options as  permitted  by its  investment
policies.

                               PORTFOLIO TURNOVER

While the Money Market Fund is not subject to specific restrictions on portfolio
turnover, it generally does not seek profits by short-term trading.  However, it
may dispose of a portfolio  security  prior to its  maturity  where  disposition
seems  advisable  because of a revised credit  evaluation of the issuer or other
considerations. Because money market instruments have short maturities, the Fund
expects to have a high portfolio turnover,  but since brokerage  commissions are
not customarily charged on money market instruments,  a high turnover should not
affect Net Asset Value or net investment income.

   
The Capital  Appreciation  Stock, Growth and Income Stock,  Balanced,  Bond, and
Treasury  2000 Funds will trade  whenever,  in  management's  view,  changes are
appropriate to achieve the stated  investment  objectives.  Management  does not
anticipate that unusual portfolio  turnover will be required and intends to keep
such turnover to moderate  levels  consistent  with the objectives of each Fund.
Although  management  makes  no  assurances,  it is  expected  that  the  annual
portfolio  turnover rate will be generally less than 100%.  This would mean that
normally less than 100% of the securities  held by the Fund would be replaced in
any one year (excluding  turnover of securities having a maturity of one year or
less). The portfolio  turnover rate for the fiscal year ended December 31, 1996,
for each Fund is as  follows:  Capital  Appreciation  Stock,  49.8%;  Growth and
Income Stock, 40.6%; Balanced, 33.5% (Stocks, 23.2%; Bonds, 10.3%); Bond, 25.7%;
and Treasury 2000,  0.0%. The portfolio  turnover rate for the fiscal year ended
December 31, 1997,  for each Fund was as follows:  Capital  Appreciation  Stock,
17.06%; Growth and Income Stock, 20.39%; Balanced, 21.15% (Stocks, 8.67%; Bonds,
12.48%); Bond, 30.71%; and Treasury 2000, 0.0%.

                           LOWER-RATED DEBT SECURITIES

Corporate  debt  securities  which are not  within the four  highest  ratings by
Standard & Poor's Corporation or Moody's Investors Service,  Inc.  ("lower-rated
debt  securities") may have speculative  characteristics  and adverse changes in
economic conditions or other circumstances are more likely to lead to a weakened
capacity to make  principal and interest  payments  than higher grade  corporate
debt securities.
    

Lower rated securities involve higher risks, in that they are especially subject
to adverse changes in general economic conditions and in the industries in which
the issuers are engaged,  to changes in the  financial  condition of the issuers
and to price fluctuations in response to changes in interest rates. Accordingly,
the returns on lower rated debt  securities  will  fluctuate  over time.  During
periods of economic downturn or rising interest rates,  highly leveraged issuers
may experience  financial  stress which could adversely  affect their ability to
make payments of principal and interest and increase the possibility of default.

   
In addition,  lower-rated debt securities may have a limited secondary market in
which to  dispose  of or from which to obtain  valuations  of these  securities.
Therefore, any valuation of these securities may be more subjective than valuing
securities for which there is a more established secondary market. Also, adverse
publicity  and  investor  perceptions,  whether  or  not  based  on  fundamental
analysis, may decrease the value and liquidity of these securities.

Achievement  of the  investment  objective of a Fund that invests in lower-rated
debt  securities  may be  more  dependent  on the  Investment  Adviser's  credit
analysis than a Fund which invests exclusively in  investment-grade  securities.
While ratings are, therefore, important in the securities selection process, the
Investment  Adviser does not rely totally on ratings  assigned to corporate debt
obligations  by  commercial   rating  firms.  For  more  information  about  the
characteristics  of the  various  rating  categories,  see  DESCRIPTION  OF BOND
RATINGS. 

Subsequent  to its  purchase,  a rating  of an issue of debt  securities  may be
reduced below the minimum rating required for purchase.  The Investment  Adviser
will consider such an event when deciding whether a Fund should continue to hold
that security. The Funds are not required to dispose of securities after ratings
have dropped below such minimum rating.
    
                             MANAGEMENT OF THE FUND

Officers and Trustees
<TABLE>
<CAPTION>
Name and Address                    Position(s) Held with Fund          Principal Occupation(s) For
                                                                        the Past 5 Years
<S>                               <C>                                <C>    
Michael S. Daubs*                   President                           CIMCO Inc.
5910 Mineral Point Road             1983 - Present                      President
Madison, WI 53705                   Trustee                             1982 - Present
                                    1997 - Present
                                                                        CUNA Mutual Life Insurance Company
                                                                        Chief Investment Officer
                                                                        1973 - Present

                                                                        CUNA Mutual Insurance Society
                                                                        Chief Investment Officer
                                                                        1990 - Present

Lawrence R. Halverson*              Vice President                      CIMCO Inc.
5910 Mineral Point Road             1987 - Present                      Senior Vice President
Madison, WI  53705                  Secretary                           1996 - Present
                                    1992 - Present                      Vice President
                                    Trustee                             1987 - 1996
                                    1997 - Present                      Secretary
                                                                        1992 - Present

                                                                        CUNA Brokerage Services, Inc.
                                                                        President
                                                                        1996 - Present

Robert M. Buckingham*               Chief Financial Officer and         CUNA Mutual Life Insurance Company
2000 Heritage Way                   Assistant Secretary                 Vice President and Valuation Actuary
Waverly, IA 50677                   1993-Present                        1991-Present

Michael G. Joneson*                 Chief Accounting Officer,           CUNA Mutual Life Insurance Company
2000 Heritage Way                   Treasurer, and Assistant            Vice President - Controller, Treasurer
Waverly, IA 50677                   Secretary                           1986-Present
                                    1992-Present

Gwendolyn M. Boeke                  Trustee                             Evangelical Lutheran Church in America
2000 Heritage Way                   1988 - Present                      Area Representative - Iowa
Waverly, IA  50677                                                      1990 - Present

Alfred L. Disrud                    Trustee                             Planned Giving Services
2000 Heritage Way                   1987 - Present                      Waverly, Iowa 50677
Waverly, IA  50677                                                      Owner
                                                                        1986 - Present
<PAGE>

Keith S. Noah                       Trustee                             Noah & Smith
2000 Heritage Way                   1984 - Present                      Charles City, Iowa 50616
Waverly, IA  50677                                                      Partner
                                                                        1948 - Present

Thomas C. Watt                      Trustee                             MidAmerican Energy Company
2000 Heritage Way                   1986 - Present                      Waterloo, Iowa  50704
Waverly, IA  50677                                                      Manager - Business Initiatives
                                                                        1997 - Present

                                                                        MidAmerican Energy Company
                                                                        Waterloo, Iowa  50704
                                                                        District Manager
                                                                        1995 - 1997

                                                                        Midwest Power Systems, Inc.
                                                                        Waterloo, Iowa  50704
                                                                        Division Manager
                                                                        1992 - 1995

*An interested person within the meaning of the Act.
</TABLE>

Trustees Compensation

   
Names of Trustees                  Aggregate Compensation For All Investment 
                                           Companies Managed by CIMCO

Gwendolyn M.Boeke                                 $4,500
Michael S. Daubs*                                 $    0
Alfred L. Disrud                                  $4,500
Lawrence R. Halverson*                            $    0
Keith S. Noah                                     $4,500
Thomas C. Watt                                    $4,500
    
* Uncompensated Interested Trustee

   
Trustees and officers of the Ultra Series Fund do not receive any benefits  from
the Ultra Series Fund upon  retirement nor does the Ultra Series Fund accrue any
expense for pension or  retirement  benefits.  All  Trustees and officers of the
Ultra  Series Fund also serve as  trustees  or  officers  of the MEMBERS  Mutual
Funds,  an  open-end  management  investment  company  that  is  managed  by the
Investment Adviser.
    

Substantial Shareholders

   
CUNA Mutual Life Insurance Company (the "Company")  established the Ultra Series
Fund as an investment  vehicle  underlying the separate  accounts of the Company
which issue variable contracts.  As of May 1, 1998, the separate accounts of the
Company were the only  shareholders of the Ultra Series Fund.  Voting rights are
described  in the Ultra  Series  Fund  Prospectus  in the  GENERAL  INFORMATION,
Shareholder Rights section.
    

Beneficial Owners

   
As of May 1, 1997,  except for the Company's initial capital  contribution,  the
beneficial  owners of the Ultra Series Fund are policyowners and contract owners
of the Company.  As of April 1, 1998,  the directors and officers as a group own
less than one percent (1%). In addition to its own  beneficial  interest in each
Fund, the Company holds legal title on behalf of the  beneficiaries  of employee
benefit plans held within the Company separate accounts not registered  pursuant
to an exemption from the  registration  provisions of the securities acts. As of
April 1, 1998, the following  persons had a beneficial  interest  exceeding five
percent (5%):
    

                                                                   Percentage of
     Fund            Beneficial Owner              Holdings          Net Assets

   
Treasury 2000   CUNA Mutual Life Insurance Company
                2000 Heritage Way                 $546,036.73          31.64%
                Waverly, IA  50677
    


                             THE INVESTMENT ADVISER

The Management  Agreement  ("Agreement")  requires that the  Investment  Adviser
provide continuous  professional investment management of the investments of the
Ultra Series Fund,  including  establishing an investment program complying with
the  investment  objectives,  policies  and  restrictions  of  each  Series.  In
addition,  the Adviser has agreed to provide,  or arrange to have provided,  all
services to each Series of the Ultra Series Fund,  including  but not limited to
legal and  accounting  services,  mailing  and  printing  services,  custody and
transfer agent services,  etc. The Investment Adviser is CIMCO Inc. The Company,
and CUNA  Mutual  Investment  Corporation  each own a one-half  interest  in the
Investment  Adviser.  CUNA  Mutual  Insurance  Society is the sole owner of CUNA
Mutual Investment  Corporation.  CUNA Mutual Investment  Corporation is the sole
owner  of  CUNA  Brokerage  Services,  Inc.,  the  principal  underwriter.   The
Investment Adviser and the Ultra Series Fund have servicing  agreements with the
Company  and with CUNA  Mutual  Insurance  Society.  The Company and CUNA Mutual
Insurance  Society  entered into a permanent  affiliation  July 1, 1990.  At the
current  time,  all of the  directors of the Company are also  directors of CUNA
Mutual  Insurance  Society  and many of the  senior  executive  officers  of the
Company hold similar positions with CUNA Mutual Insurance Society.

The Investment Adviser, pursuant to a Management Agreement,  provides investment
advice for each Fund and provides or arranges for the provision of substantially
all other services required by the Ultra Series Fund through services agreements
with affiliated and unaffiliated  service  providers.  Such services include all
administrative,  accounting  and  legal  services  as  well as the  services  of
custodians,  transfer agents and dividend disbursing agents. There are, however,
certain expenses that The Ultra Series Fund pays for itself under the Management
Agreement.  These are: fees of the independent Trustees, fees of the independent
auditors,  interest on borrowings by a Fund, any taxes that a Fund must pay, and
any  extraordinary  expenses  incurred  by a Fund or Funds  not in the  ordinary
course of business. As full compensation for its services, the Ultra Series Fund
pays the Investment  Adviser a unitary fee computed at an annualized  percentage
rate of the average value of the daily net assets of each series as set forth in
the table below:

                              Management Fee Table


Series                                  Management Fee

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

   
Under the  Investment  Advisory  Agreement  effective  prior to May 1, 1997, the
total fee paid to the  Investment  Adviser  during the year ended  December  31,
1995, was $1,003,650.  The fees were allocated to the Funds as follows: $103,513
to Capital Appreciation Stock,  $357,783 to Growth and Income Stock, $436,723 to
Balanced, $51,283 to Bond, $48,171 to Money Market, and $6,177 to Treasury 2000.
The total fee paid to the Investment  Adviser during the year ended December 31,
1996, was $2,094,152.  The fees were allocated to the Funds as follows: $335,246
to Capital Appreciation Stock,  $804,430 to Growth and Income Stock, $759,395 to
Balanced,  $100,076  to Bond,  $87,984 to Money  Market,  and $7,021 to Treasury
2000.  The  total  fee paid to the  Investment  Adviser  during  the year  ended
December  31,  1997,  was  $5,320,543.  The fees were  allocated to the Funds as
follows:  $1,194,672  to Capital  Appreciation  Stock,  $2,108,616 to Growth and
Income  Stock,  $1,627,496  to  Balanced,  $248,008  to Bond,  $134,513 to Money
Market, and $7,238 to Treasury 2000.
    

The Investment Adviser makes the investment decisions and is responsible for the
investment and reinvestment of assets; performs research,  statistical analysis,
and continuous supervision of the Fund's investment portfolio;  furnishes office
space for the Ultra  Series  Fund;  provides  the  Ultra  Series  Fund with such
accounting data concerning the investment activities of the Ultra Series Fund as
is required to be prepared and files all periodic  financial reports and returns
required to be filed with the Securities and Exchange Commission ("SEC") and any
other regulatory agency;  continuously  monitors  compliance by the Ultra Series
Fund in its investment activities with the requirements of the Act and the rules
promulgated pursuant thereto; and renders to the Ultra Series Fund such periodic
and  special  reports as may be  reasonably  requested  with  respect to matters
relating to the duties of the Investment Adviser.

CIMCO  employs a team approach in the  management of all the Funds.  Lawrence R.
Halverson,  CFA  (Chartered  Financial  Analyst),  is  co-manager of the Capital
Appreciation Stock Fund, Growth and Income Stock Fund, Balanced Fund, Bond Fund,
and Treasury  2000 Fund.  Since  December 1, 1987, he has been employed with the
Investment  Adviser and is now Vice  President and Secretary of the Ultra Series
Fund, and Senior Vice President and Secretary of the Investment Adviser. Annette
E. Hellmer, CFA is co-manager of the Capital Appreciation Stock Fund, Growth and
Income Stock Fund,  and Balanced  Fund.  She has been employed by the Investment
Adviser  since  August 1, 1996.  Joseph L.  Gogola,  CFA, is  co-manager  of the
Balanced  Fund,  Bond Fund,  and Treasury 2000 Fund. He has been employed by the
Investment  Adviser  since  January  1,  1992,  and  had  been  employed  in the
Investment  Department  of CUNA Mutual for several  years prior to that date. In
addition  to work on behalf of the Ultra  Series  Fund,  each  manager  performs
advisory  services for other clients of the Investment  Adviser.  The Management
Agreement


   
The  Investment  Adviser  employs a team  approach in the  management of all the
Funds.  Lawrence R. Halverson,  CFA (Chartered Financial Analyst), is co-manager
of the Capital  Appreciation Stock Fund, Growth and Income Stock Fund,  Balanced
Fund,  Bond Fund,  and Treasury 2000 Fund.  Since  December 1, 1987, he has been
employed with the Investment  Adviser and is now Vice President and Secretary of
the Ultra Series Fund, and Senior Vice President and Secretary of the Investment
Adviser. Annette E. Hellmer, CFA is co-manager of the Capital Appreciation Stock
Fund,  Growth and Income Stock Fund, and Balanced Fund. She has been employed by
the  Investment  Adviser  since August 1, 1996.  Daniel E. Julie,  CPA,  CFA, is
co-manager of the Capital Appreciation Stock Fund, Growth and Income Stock Fund,
and Balanced Fund. He has been employed by the Investment  Adviser since June 1,
1993.  Jeffrey B. Pantages,  CFA, is co-manager of the Balanced Fund, Bond Fund,
and Treasury  2000 Fund. He has been  employed by the  Investment  Adviser since
March 23, 1998, prior to which he was Chief Investments  Officer of the Security
Benefit  Group  since 1992.  In  addition to work on behalf of the Ultra  Series
Fund,  each  manager  performs  advisory  services  for  other  clients  of  the
Investment Adviser

Effective  January 1, 1992, the Adviser  contracted  with the Company to perform
some of these  services  on  behalf  of the Ultra  Series  Fund in return  for a
portion of the  investment  advisory fee. In 1995, the Adviser paid $217,034 for
those services.  In 1996, the Adviser paid $447,362 for those services. In 1997,
the Adviser  paid  $223,220 for those  services.  Effective  July 17, 1993,  the
Adviser contracted with CUNA Mutual Insurance Society to perform cash management
and investment  accounting services on behalf of the Ultra Series Fund in return
for a portion of the  investment  advisory fee. In 1995, the Adviser paid $9,487
for those  services.  In 1996, the Adviser paid $19,711 for those  services.  In
1997, the Adviser paid $16,404 for those services.
    

On January 16, 1997,  the  Management  Agreement was approved by the  beneficial
owners of the  Ultra  Series  Fund  after  approval  and  recommendation  by the
Trustees of the Ultra Series Fund,  including a majority of Trustees who are not
parties to the Management  Agreement or interested  persons to any such party as
defined in the Act, on October 29, 1996. The Management Agreement, unless sooner
terminated,  shall  continue  until two  years  from the  effective  date of the
Management Agreement and thereafter shall continue  automatically for periods of
one calendar year so long as such continuance is specifically  approved at least
annually (a) by the Trustees or by a vote of a majority of the outstanding votes
attributable  to the shares of the Class  representing  an interest in the Fund;
and (b) by a vote of a majority  of those  Trustees  who are not  parties to the
Management  Agreement or interested persons of any such party, cast in person at
a meeting  called  for the  purpose  of voting on such  approval,  provided  the
Management  Agreement  may be  terminated  as to any Fund or to all Funds by the
Ultra Series Fund at any time, without the payment of any penalty,  by vote of a
majority  of  the  Trustees  or by a  majority  vote  of the  outstanding  votes
attributable to the shares of the applicable  Fund or by the Investment  Adviser
on sixty (60) days written notice to the other party.  The Management  Agreement
will terminate automatically in the event of its assignment.

The  Management  Agreement  provides  that the  Investment  Adviser shall not be
liable to the Ultra Series Fund or any  shareholder for anything done or omitted
by it, or for any losses that may be sustained in the purchase,  holding or sale
of any security,  except for an act or omission  involving willful  misfeasance,
bad faith, gross negligence, or reckless disregard of the duties imposed upon it
by the Management Agreement.

The directors and principal officers of the Investment Adviser are as follows:


Joyce A. Harris                         Director and Chair
James C. Hickman                        Director
Michael B. Kitchen                      Director
Michael S. Daubs                        Director and President
George A. Nelson                        Director and Vice Chair
Lawrence R. Halverson                   Senior Vice  President
                                         and Secretary
Daniel J. Larson                        Vice President
Thomas J. Merfeld                       Vice President
   
Janice C. Doyle                         Assistant Secretary
    

                              EXPENSES OF THE FUND

The Capital  Appreciation  Stock, Growth and Income Stock,  Balanced,  Bond, and
Money Market Funds are currently  obligated to pay to the Investment Adviser the
Management Fee set forth in Management Fee Table above. As part of its services,
the  Investment  Adviser  has agreed to  provide  or  arrange to have  provided,
administrative  services to each Fund. Currently,  the Company is providing some
of these services on behalf of the Investment Adviser.

Prior to May 1, 1997, expenses which exceeded .65% of the average value of daily
net  assets of such Fund were  being  absorbed  by the  Company  pursuant  to an
Expense  Reimbursement  Agreement between the Company and the Ultra Series Fund.
For the year ended December 31, 1995, the Company  absorbed  $96,817 of ordinary
business expense. This expense was allocated among the Funds as follows: $22,806
was allocated to Capital  Appreciation  Stock,  $28,817 to the Growth and Income
Stock, $33,518 to Balanced,  $3,971 to Bond, and $7,705 to Money Market. For the
year ended December 31, 1996, no expenses were absorbed by the Company.

                        DISTRIBUTION PLAN AND AGREEMENT

As described in the Prospectus, the Board of Trustees has adopted a Distribution
Plan for the Fund  under  Rule  12b-1 of the Act to  compensate  CUNA  Brokerage
Services, Inc. for certain services and to pay expenses of the Ultra Series Fund
incurred in connection with the offering of Class C Fund shares.

The Distribution  Plan was initially  approved on October 29, 1996, by the Board
of Trustees of the Ultra Series Fund, including all disinterested  Trustees. The
Plan takes effect May 1, 1997, and continues in effect from year to year only so
long  as such  continuance  is  approved  at  least  annually  by the  Trustees,
including a majority of the Trustees who are not  interested,  as defined by the
Act, and who have no direct or indirect  financial  interest in the operation of
the Plan or agreements related to it.

Any amendment which would materially  increase the amount which the Ultra Series
Fund may expend under the Plan requires approval by holders of a majority of the
outstanding  shares of the Ultra Series Fund. Any agreement  related to the Plan
may be terminated at any time,  upon sixty (60) days written notice to the other
party, by a vote of a majority of the  disinterested  Trustees,  or by vote of a
majority  of the  Trust's  outstanding  voting  securities.  In the  event of an
assignment, the Plan terminates automatically. As long as the Plan is in effect,
the selection and nomination of the  disinterested  Trustees of the Ultra Series
Fund are committed to the discretion of the disinterested Trustees.

                                    CUSTODIAN

   
State Street Bank and Trust Company is the current  custodian for the securities
and cash of the Ultra Series Fund. The custodian holds for the Ultra Series Fund
all  securities  and cash owned by the Ultra Series  Fund,  and receives for the
Ultra  Series Fund all  payments of income,  payments  of  principal  or capital
distributions  with respect to securities  owned by the Ultra Series Fund. Also,
the custodian  receives  payment for the shares issued by the Ultra Series Fund.
The custodian releases and delivers securities and cash upon proper instructions
from  the  Ultra  Series  Fund.  Pursuant  to and in  furtherance  of a  Custody
Agreement with the custodian,  the Ultra Series Fund uses automated instructions
and a cash data entry  system to  transfer  monies to and from the Ultra  Series
Fund's account at the custodian.
    


                              INDEPENDENT AUDITORS

The  financial  statements  have  been  included  herein  and  elsewhere  in the
Registration  Statement in reliance upon the reports of KPMG Peat Marwick,  LLP,
Des Moines, Iowa,  independent auditors,  and upon the authority of said firm as
experts in accounting and auditing.

                                    BROKERAGE

It is the  policy  of the  Ultra  Series  Fund,  in  effecting  transactions  in
portfolio  securities,  to seek best  execution of orders at the most  favorable
prices. The determination of what may constitute best execution and price in the
execution  of a  securities  transaction  by  a  broker  involves  a  number  of
considerations,  including without  limitation,  the overall direct net economic
result  (involving  both price paid or received  and any  commissions  and other
costs paid), the efficiency with which the transaction is effected,  the ability
to  effect  the  transaction  at all  where  a  large  block  is  involved,  the
availability  of the  broker to stand  ready to  execute  potentially  difficult
transactions  in the future and the  financial  strength  and  stability  of the
broker.  Such  considerations  are  judgmental  and are weighed by management in
determining the overall reasonableness of brokerage commissions paid.

   
Subject to the foregoing, a factor in the selection of brokers is the receipt of
research  services,   analyses  and  reports  concerning  issuers,   industries,
securities,  economic  factors  and trends  and other  statistical  and  factual
information.  Any such research and other  statistical  and factual  information
provided  by  brokers  to the Ultra  Series  Fund or the  Investment  Adviser is
considered  to be in  addition  to and not in lieu of  services  required  to be
performed by the  Investment  Adviser  under its contract  with the Ultra Series
Fund.  Research  obtained on behalf of the Ultra  Series Fund may be used by the
Investment  Adviser in connection with other clients of the Investment  Adviser.
Conversely, research received from placement of brokerage for other accounts may
be used by the  Investment  Adviser in managing  investments of the Ultra Series
Fund.  Therefore,  the correlation of the cost of research to individual clients
of the Adviser,  including the Ultra Series Fund, is  indeterminable  and cannot
practically  be  allocated  among  the  Ultra  Series  Fund  and the  Investment
Adviser's other clients.  Consistent  with the above,  the Ultra Series Fund may
effect  principal  transactions  with a broker-dealer  that furnishes  brokerage
and/or research services, or designate any such broker-dealer to receive selling
commissions,   discounts  or  other  allowances,  or  otherwise  deal  with  any
broker-dealer,   in   connection   with  the   acquisition   of   securities  in
underwritings.  Accordingly,  the net prices or commission  rates charged by any
such  broker-dealer  may be greater than the amount another firm might charge if
the management of the Ultra Series Fund determines in good faith that the amount
of such net prices and commissions is reasonable in relation to the value of the
services and research  information  provided by such  broker-dealer to the Ultra
Series Fund. For the year ended December 31, 1995,  Capital  Appreciation  Stock
Fund paid $76,931, Growth and Income Stock Fund paid $169,671, and Balanced Fund
paid  $100,693 in brokerage  fees.  There were no  brokerage  fees paid by Bond,
Money Market,  or Treasury 2000 Funds in 1995.  For the year ended  December 31,
1996, Capital Appreciation Stock Fund paid $171,251, Growth and Income Fund paid
$336,331  and  Balanced  Fund paid  $150,550 in  brokerage  fees.  There were no
brokerage fees paid by Bond,  Money Market,  or Treasury 2000 Funds in 1996. For
the year ended December 31, 1997, Capital Appreciation Stock Fund paid $186,338,
Growth and Income Fund paid $352,096 and Balanced Fund paid $92,415 in brokerage
fees. There were no brokerage fees paid by Bond, Money Market,  or Treasury 2000
Funds in 1997.
    

The  Ultra  Series  Fund  expects  that  purchases  and  sales of  money  market
instruments usually will be principal transactions. Money market instruments are
normally  purchased  directly from the issuer or from an  underwriter  or market
maker for the securities.  There usually will be no brokerage  commissions  paid
for such purchases.  Purchases from  underwriters  will include the underwriting
commission or concession  and  purchases  from dealers  serving as market makers
will include the spread between the bid and asked price.  Where transactions are
made in the  over-the-counter  market,  the Ultra Series Fund will deal with the
primary  market  makers  unless  equal or more  favorable  prices are  otherwise
obtainable.

Where advantageous,  the Ultra Series Fund may participate with other clients of
the  Investment  Adviser in  "bunching  of trades"  wherein one purchase or sale
transaction  representing  several  different  client  accounts is placed with a
broker. The Investment  Adviser has established  various policies and procedures
that assure equitable treatment of all accounts.

The policy with  respect to  brokerage  is and will be reviewed by the  Trustees
from time to time. Because of the possibility of further regulatory developments
affecting  the  securities  exchanges  and brokerage  practices  generally,  the
foregoing practices may be changed, modified or eliminated.

                           HOW SECURITIES ARE OFFERED

Distributor

As described  in the  Prospectus,  the Ultra Series Fund does not deal  directly
with the  public.  Shares of the Ultra  Series  Fund are  currently  issued  and
redeemed through the distributor,  pursuant to a Distribution  Agreement between
the Ultra Series Fund and the  distributor.  The principal  place of business of
CUNA Brokerage  Services,  Inc. is 5910 Mineral Point Road,  Madison,  Wisconsin
53705. The distributor is owned by CUNA Mutual  Investment  Corporation which in
turn is owned by CUNA  Mutual  Insurance  Society.  The  Company and CUNA Mutual
Insurance Society entered into an agreement of permanent  affiliation on July 1,
1990.  Shares of the Ultra Series Fund are  purchased  and redeemed at Net Asset
Value.  The  Distribution  Agreement  provides that the distributor will use its
best efforts to render  services to the Ultra Series Fund, but in the absence of
willful  misfeasance,  bad faith,  gross negligence or reckless disregard of its
obligations,  it will not be liable to the Ultra Series Fund or any  shareholder
for any error of  judgment  or mistake of law or any act or  omission or for any
losses sustained by the Ultra Series Fund or its shareholders.

Transfer Agent

The  Company,  an  affiliated  person,  acts  as  transfer  agent  and  dividend
disbursing agent for the Ultra Series Fund.

                            NET ASSET VALUE OF SHARES

Net Asset Value per share is calculated  each  Valuation Day. Net Asset Value is
determined  by  dividing  each  Fund's  total net assets by the number of shares
outstanding  at the time of  calculation.  Total net  assets are  determined  by
adding the total current value of portfolio securities,  cash, receivables,  and
other assets and  subtracting  liabilities.  Shares will be sold and redeemed at
the Net Asset  Value next  determined  after  receipt of the  purchase  order or
request for redemption.

The Net Asset Value of a share issued by the Capital  Appreciation Stock, Growth
and  Income  Stock,  Balanced,  and Bond Funds was  initially  set at $10.00 per
share.  The Net  Asset  Value of a share  issued by the  Money  Market  Fund was
initially  set at $1.00 per share.  (See Money Market Fund below.) The Net Asset
Value of a share of the Treasury 2000 Fund was initially set at $3.62 per share.

Money Market Fund

The  Trustees  have  determined  that the best method  currently  available  for
determining the Net Asset Value is the amortized cost method.  The Trustees will
utilize this method  pursuant to Rule 2a-7 of the Act. The use of this valuation
method will be continuously  reviewed and the Trustees will make such changes as
may be necessary to assure that assets are valued  fairly as  determined  by the
Trustees in good  faith.  Rule 2a-7  obligates  the  Trustees,  as part of their
responsibility  within the  overall  duty of care owed to the  shareholders,  to
establish  procedures  reasonably  designed,  taking into account current market
conditions and the investment  objectives,  to stabilize the Net Asset Value per
share as computed for the purpose of  distribution  and  redemption at $1.00 per
share. The Trustees'  procedures include periodically  monitoring,  as they deem
appropriate  and at such  intervals as are reasonable in light of current market
conditions,  the relationship between the amortized cost value per share and the
Net Asset Value per share based upon available market  quotations.  The Trustees
will consider  what steps should be taken,  if any, in the event of a difference
of more than 1/2 of one percent (1%)  between the two.  The  Trustees  will take
such steps as they consider appropriate, (e.g., redemption in kind or shortening
the average  portfolio  maturity)  to minimize  any  material  dilution or other
unfair  results  which might arise from  differences  between the two.  The Rule
requires that the Fund limit its  investments to instruments  which the Trustees
determine  will  present  minimal  credit risks and which are of high quality as
determined by a major rating agency,  or, in the case of any instrument  that is
not so rated, of comparable quality as determined by the Trustees. It also calls
for the Fund to maintain a dollar weighted average portfolio  maturity (not more
than 90 days)  appropriate  to its  objective of  maintaining a stable Net Asset
Value of $1.00 per share and  precludes  the purchase of any  instrument  with a
remaining  maturity of more than 397 days. Should the disposition of a portfolio
security result in a dollar weighted average portfolio  maturity of more than 90
days,  the Fund will invest its available  cash in such manner as to reduce such
maturity to 90 days or less as soon as reasonably practicable.

It is the normal practice of the Fund to hold portfolio  securities to maturity.
Therefore,  unless a sale or other  disposition  of a security  is  mandated  by
redemption  requirements  or other  extraordinary  circumstances,  the Fund will
realize  the par value of the  security.  Under  the  amortized  cost  method of
valuation  traditionally  employed by institutions for valuation of money market
instruments,  neither  the  amount of daily  income  nor the Net Asset  Value is
affected by any unrealized appreciation or depreciation. In periods of declining
interest  rates,  the  indicated  daily yield on shares the Fund has computed by
dividing  the  annualized  daily  income by the Net Asset  Value will tend to be
higher than if the  valuation  were based upon market prices and  estimates.  In
periods of rising interest  rates,  the indicated daily yield on shares the Fund
has computed by dividing the annualized daily income by the Net Asset Value will
tend to be lower  than if the  valuation  were  based  upon  market  prices  and
estimates.

Capital  Appreciation  Stock,  Growth  and Income  Stock,  Balanced,  Bond,  and
Treasury 2000 Funds

Common stocks that are traded on an established exchange or over-the-counter are
valued  on the  basis of  market  price as of the end of the  Valuation  Period,
provided  that a market  quotation  is readily  available.  Otherwise,  they are
valued at fair value as  determined  in good faith by or at the direction of the
Trustees.

Stripped  Treasury   Securities,   long-term  straight  debt  obligations,   and
non-convertible  preferred  stocks are valued  using  readily  available  market
quotations,  if available.  When exchange quotations are used, the latest quoted
sale price is used. If an over-the-counter quotation is used, the last bid price
will normally be used. If readily available market quotations are not available,
these securities are valued at market value as determined in good faith by or at
the direction of the Trustees.  Readily  available market quotations will not be
deemed available if an exchange quotation exists for a debt security,  preferred
stock, or security  convertible  into common stock,  but it does not reflect the
true value of the Fund's holdings because sales have occurred infrequently,  the
market for the security is thin, or the size of the reported trade is considered
not comparable to the Fund's institutional size holdings. When readily available
market  quotations are not available,  the Fund will use an independent  pricing
service which provides valuations for normal institutional size trading units of
such  securities.  Such a service may utilize a matrix  system  which takes into
account appropriate factors such as institutional size trading in similar groups
of securities,  yield,  quality,  coupon rate, maturity,  type of issue, trading
characteristics  and  other  market  data  in  determining   valuations.   These
valuations are reviewed by the  Investment  Adviser.  If the Investment  Adviser
believes that evaluation  still does not represent a fair value, it will present
for approval of the Trustees  such other  valuation  as the  Investment  Adviser
considers to represent a fair value. The specific pricing service or services to
be used will be presented for approval of the Trustees.

Short-term  instruments  having  maturities  of sixty  (60) days or less will be
valued at amortized cost. Short-term  instruments having maturities of more than
sixty  (60) days will be valued  at  market  values or values  based on  current
interest rates.

Options,  stock index futures,  interest rate futures, and related options which
are traded on U.S.  exchanges or boards of trade are valued at the closing price
as of the close of the New York Stock Exchange.

The Investment Adviser,  at the direction of the Trustees,  values the following
at prices it deems in good faith to be fair:

1.   Securities (including restricted  securities) for which complete quotations
     are not readily available, and

2.   Listed  securities if, in the opinion of the Investment  Adviser,  the last
     sale  price  does  not  reflect  the  current  market  value  or if no sale
     occurred, and

3.   Other assets.

                       DIVIDENDS, DISTRIBUTIONS AND TAXES

The Ultra  Series  Fund has  qualified  and  intends to continue to qualify as a
"regulated  investment  company" under Subchapter M of the Internal Revenue Code
of 1986, as amended (the "Code"). Each Fund will be treated as a separate entity
for federal income tax purposes, and, therefore,  the investments and results of
each Fund is determined  separately for purposes of determining whether the Fund
qualifies as a "regulated  investment  company" and for purposes of  determining
the Fund's net  ordinary  income (or loss) and net  realized  capital  gains (or
losses).  To qualify for treatment as a "regulated  investment  company," a Fund
must, among other things, meet the diversification  requirements of Subchapter M
of the Code,  derive in each taxable year at least ninety  percent  (90%) of its
gross  income  from  dividends,  interest  and  gains  from  the  sale or  other
disposition of securities and derive less than thirty percent (30%) of its gross
income in each taxable year from the gains  (without  deduction for losses) from
the sale or other  disposition of securities held for less than three months. It
is the  intention  of the Ultra  Series  Fund to meet  these  requirements  with
respect to each Fund in order to qualify as a regulated investment company.

In order for a Fund to be treated as a conduit and avoid the  imposition  of any
Fund-level  income  or excise  tax,  the Fund must  distribute  at least  ninety
percent (90%) of its net investment  income. Net investment income of each Fund,
other than the Money Market  Fund,  will consist of all payments of dividends or
interest  received  by such  Fund  less  the  estimated  expenses  of such  Fund
(including fees payable to the Investment Adviser). Net investment income of the
Money  Market Fund (from the last  determination  thereof)  consists of interest
accrued  and/or  discount  earned  less  the  estimated  expenses  of that  Fund
applicable to that dividend period.  Net investment  income of the Treasury 2000
Fund includes accrued original issue discount.

It is the intention of the Ultra Series Fund to distribute  substantially all of
the net investment  income, if any, of each Fund thereby avoiding the imposition
of any Fund-level income or excise tax as follows:

(i)  Dividends  on the Money Market Fund will be declared  daily and  reinvested
     monthly in additional full and fractional shares of the Money Market Fund.

(ii) Dividends of ordinary income from the Capital  Appreciation  Stock,  Growth
     and Income Stock,  Balanced, and Bond Funds will be declared and reinvested
     quarterly in additional full and fractional shares of the respective Fund.

(iii)All net  realized  short-term  and  long-term  capital  gains of the  Ultra
     Series Fund, if any, will be declared and  distributed  at least  annually,
     but in any event,  no more  frequently than allowed under SEC rules, to the
     shareholders of each Fund to which such gains are attributable.

(iv) Dividends on the Treasury 2000 Fund cannot be paid to its shareholders (the
     Separate  Accounts) during the taxable year since no cash will be available
     for  distribution  until the  securities  are sold or  mature.  The Fund is
     treated  as if it paid a  dividend  of a certain  amount  without  actually
     paying the dividend if the shareholder  consents to the treatment ("consent
     dividend"). The Separate Accounts will file a consent on Form 972 each year
     to include in gross income,  as a taxable dividend for that year, an amount
     computed  to be  sufficient  to  enable  the Fund to meet the  distribution
     requirements necessary for the Fund to be treated as a conduit and taxed as
     a regulated investment company.

Because there will be no periodic  payment of interest on the Stripped  Treasury
Securities  held by the Treasury  2000 Fund,  shareholders  (i.e.,  the separate
accounts or qualified plans) will be requested  periodically to sign consents to
have a certain  portion of the accrued amount of discount  treated as dividends.
Currently the separate  accounts are the only  shareholders of the Treasury 2000
Fund;  it  is  anticipated   that  any  taxable  income  will  be  offset  by  a
corresponding deduction for an increase in reserves.



<PAGE>


Options and Futures Transactions

The tax  consequences of options  transactions  entered into by a Fund will vary
depending  on the  nature of the  underlying  security,  whether  the  option is
written or  purchased  and  finally,  whether the  "straddle"  rules,  discussed
separately below,  apply to the transaction.  When a Fund writes a call or a put
option on an equity or  convertible  debt  security,  the  treatment for federal
income  tax  purposes  of the  premium  that it  receives  will,  subject to the
straddle rules, depend on whether the option is exercised. If the option expires
unexercised, or if the Fund enters into a closing purchase transaction, the Fund
will  realize a gain (or loss if the cost of the  closing  purchase  transaction
exceeds the amount of the premium) without regard to any unrealized gain or loss
on the  underlying  security.  Any such gain or loss will be short-term  capital
gain or loss,  except that any loss on a  "qualified"  covered call stock option
that is not treated as part of a straddle  may be treated as  long-term  capital
loss. If a call option written by a Fund is exercised, the Fund will recognize a
capital gain or loss from the sale of the  underlying  security,  and will treat
the  premium as  additional  sales  proceeds.  Whether  the gain or loss will be
long-term  or  short-term  will depend on the holding  period of the  underlying
security.  If a put  option  written by a Fund is  exercised,  the amount of the
premium will reduce the tax basis of the security that the Fund then purchases.

If a put or call option that a Fund has  purchased  on an equity or  convertible
debt security expires unexercised, the Fund will realize a capital loss equal to
the cost of the option.  If the Fund enters into a closing sale transaction with
respect to the option,  it will  realize a capital  gain or loss  (depending  on
whether the proceeds from the closing  transaction  are greater or less than the
cost of the option).  The gain or loss will be short-term or long-term depending
on the Fund's  holding  period in the option.  If the Fund  exercises such a put
option,  it will realize a short-term  gain or loss (long-term if the Fund holds
the underlying security for more than one year before it purchases the put) from
the sale of the underlying  security measured by the sales proceeds decreased by
the premium paid. If the Fund exercises such a call option, the premium paid for
the option will be added to the tax basis of the security purchased.

One or more Funds may invest in Section 1256  contracts.  Section 1256 contracts
generally   include  options  on  nonconvertible   debt  securities   (including
securities of U.S. Government agencies or  instrumentalities),  options on stock
indexes,  futures  contracts,  options on futures  contracts and certain foreign
currency  contracts.  Options on foreign currency,  futures contracts on foreign
currency,  and options on foreign  currency futures will qualify as Section 1256
contracts  if the  options or futures are traded on or subject to the rules of a
qualified board or exchange.  In general, gain or loss on Section 1256 contracts
will be  treated  as 60%  long-term  and  40%  short-term  capital  gain or loss
("60/40"),  regardless of the period of time  particular  positions are actually
held by a Fund. In addition,  any Section 1256 contracts held at the end of each
taxable  year (and on October 31 of each year for  purposes of  determining  the
amount of capital gain net income that a Fund must distribute to avoid liability
for the 4% excise  tax) are "marked to market"  with the result that  unrealized
gains or losses are treated as though they were realized and the resulting  gain
or loss is treated as 60/40 gain or loss. This deemed realization does not cause
a disposition for purposes of the "short-short" rule.

Straddles

Hedging transactions  undertaken by a Fund may result in "straddles" for federal
income tax purposes.  Straddles are defined to include "offsetting positions" in
actively-traded personal property. Under current law, it is not clear under what
circumstances  one  investment  made by a Fund,  such as an  option  or  futures
contract,  would be treated as "offsetting"  another investment also held by the
Fund, such as the underlying  security (or vice versa) and,  therefore,  whether
the Fund  would be  treated  as having  entered  into a  straddle.  In  general,
investment positions may be "offsetting" if there is a substantial diminution in
the risk of loss from  holding  one  position  by reason of holding  one or more
other positions (although certain "qualified" covered call stock options written
by a Fund may be treated as not creating a straddle).

To the extent that the straddle rules apply to positions  established by a Fund,
losses  realized  by the Fund  may be  either  deferred  or  recharacterized  as
long-term  losses,  and long-term gains realized by the Fund may be converted to
short-term gains.

Each Fund may make one or more of the elections  available  under the Code which
are applicable to straddles.  If a Fund makes any of the elections,  the amount,
character,  and timing of the  recognition  of gains or losses from the affected
straddle  positions  will be determined  under rules that vary  according to the
election(s) made. The rules applicable under certain of the elections operate to
accelerate  the  recognition  of gains or  losses  from  the  affected  straddle
positions.

Because  application  of the straddle rules may affect the character of gains or
losses,  defer losses and/or  accelerate the recognition of gains or losses from
the  affected  straddle  positions,  the  amount  which must be  distributed  to
shareholders,  and which will be taxed to  shareholders  as  ordinary  income or
long-term capital gain, may be increased or decreased  substantially as compared
to a Fund that did not engage in such hedging transactions.



<PAGE>


                    CALCULATION OF YIELDS AND TOTAL RETURNS

From time to time, the Ultra Series Fund may disclose yields, total returns, and
other performance  data. Such performance data will be computed,  or accompanied
by  performance  data computed in accordance  with the standards  defined by the
SEC.  The Ultra Series Fund will not  disclose  performance  of the Ultra Series
Fund in separate  account sales  literature or advertising  without also showing
performance at the separate account level.

Money Market Fund Yields

From time to time,  sales  literature may quote the current  annualized yield of
the Money  Market  Fund for a seven-day  period in a manner  which does not take
into  consideration  any  realized or  unrealized  gains or losses on  portfolio
securities.

This  current  annualized  yield  is  computed  by  determining  the net  change
(exclusive of realized gains and losses on the sale of securities and unrealized
appreciation  and  depreciation) at the end of the seven-day period in the value
of a  hypothetical  account  having a balance of 1 share at the beginning of the
period,  dividing  such  net  change  in  account  value  by  the  value  of the
hypothetical account at the beginning of the period to determine the base period
return,  and  annualizing  this quotient on a 365-day  basis.  The net change in
value  reflects  net  income  from the  Fund  attributable  to the  hypothetical
account. Current yield is calculated according to the following formula:

         Current Yield   =((NCS  -   ES)/UV)   X (365/7)

Where:

     NCS  = the net change in the value of the Money Market Fund  (exclusive  of
          realized  gains or losses  on the sale of  securities  and  unrealized
          appreciation and depreciation)  for the seven-day period  attributable
          to a hypothetical account having a balance of 1 share.

     ES   = per share expenses  attributable to the hypothetical account for the
          seven-day period.

     UV   = the share value for the first day of the seven-day period.

     Effective yield = (1 + ((NCS-ES)/UV)) 365/7 - 1

Where:

     NCS  = the net change in the value of the Money Market Fund  (exclusive  of
          realized  gains or losses  on the sale of  securities  and  unrealized
          appreciation and depreciation)  for the seven-day period  attributable
          to a hypothetical account having a balance of 1 share.

     ES   = per share expenses  attributable to the hypothetical account for the
          seven-day period.

     UV   = the share value for the first day of the seven-day period.

The  current  and  effective  yields on amounts  held in the Money  Market  Fund
normally  fluctuate on a daily basis.  Therefore,  the  disclosed  yield for any
given past period is not an  indication  or  representation  of future yields or
rates of return.  The Money Market Fund's actual yield is affected by changes in
interest rates on money market securities, average portfolio maturity, the types
and quality of  portfolio  securities  held and  operating  expenses.  Yields on
amounts held in the Money Market Fund may also be  presented  for periods  other
than a seven-day period.

Other Fund Yields

From time to time,  sales  literature may quote the current  annualized yield of
one or more of the Funds  (except the Money Market Fund) for 30-day or one-month
periods.  The annualized  yield of a Fund refers to income generated by the Fund
during a 30-day or one-month  period and is assumed to be generated  each period
over a 12-month period.

The yield is computed by: 1) dividing the net investment  income of the Fund for
the period;  by 2) the maximum  offering  price per share on the last day of the
period times the daily average number of shares  outstanding for the period;  by
3) compounding  that yield for a six-month  period;  and by 4) multiplying  that
result by 2. The  30-day  or  one-month  yield is  calculated  according  to the
following formula:

     Yield = 2 X (((NI - ES)/(U X UV)) + 1)6 - 1)

Where:

     NI   =  net  income  of  the  Fund  for  the  30-day  or  one-month  period
          attributable to the Fund's shares.

     ES   = expenses of the Fund for the 30-day or one-month period.

     U    = the average number of shares outstanding.

     UV   = the share value at the close (highest) of the last day in the 30-day
          or one-month period.

The yield normally fluctuates over time. Therefore,  the disclosed yield for any
given past period is not an  indication  or  representation  of future yields or
rates of return.  A Fund's  actual yield is affected by the types and quality of
portfolio securities held and operating expenses.

Average Annual Total Returns

From time to time,  sales literature may also quote average annual total returns
for one or more of the Funds for various periods of time.

When a Fund has been in  operation  for 1, 5, and 10  years,  respectively,  the
average  annual total return for these periods will be provided.  Average annual
total  returns  for  other  periods  of time  may,  from  time to time,  also be
disclosed.

Standard  average annual total returns  represent the average annual  compounded
rates of  return  that  would  equate  an  initial  investment  of $1,000 to the
redemption  value of that  investment as of the last day of each of the periods.
The ending date for each period for which total return  quotations  are provided
will  be  for  the  most  recent  month  or  calendar  quarter-end  practicable,
considering  the type of the  communication  and the media  through  which it is
communicated.

The total return is calculated according to the following formula:

          TR   = ((ERV/P)1/N) - 1

Where:

          TR   = the  average  annual  total  return  net of any Fund  recurring
               charges.

          ERV  = the ending redeemable value of the hypothetical  account at the
               end of the period.

          P    = a hypothetical initial payment of $1,000.

          N    = the number of years in the period.

Such average annual total return information for the Funds is as follows:


                              For the             For the            For the
                              1-year              5-year             10-year
                              period              period             period
                              ended               ended              ended
Fund                          12/31/97            12/31/97           12/31/97

Capital Appreciation            31.57%             N/A               21.83%*
Growth and Income               31.42%            19.51%             16.71%
Balanced                        16.87%            11.73%             11.58%
Bond                             7.45%             6.30%              7.95%
Treasury 2000                    6.86%             7.19%             10.36%

* Capital Appreciation Fund returns are from inception, January 3, 1994.

Other Total Returns

From time to time, sales  literature may also disclose  cumulative total returns
in conjunction with the standard  formats  described above. The cumulative total
returns will be calculated using the following formula:

     CTR  = (ERV/P) - 1

Where:

     CTR  = The cumulative  total return net of any Fund  recurring  charges for
          the period.

     ERV  = The ending  redeemable value of the  hypothetical  investment at the
          end of the period.

     P    = A hypothetical single payment of $1,000.

        DESCRIPTION OF BOND RATINGS (AS PUBLISHED BY THE RATING SERVICES)

Moody's Investors Service, Inc.

Aaa--Bonds which are rated Aaa are judged to be of the best quality.  They carry
the smallest  degree of investment  risk and are generally  referred to as "gilt
edge." Interest payments are protected by a large or by an exceptionally  stable
margin and principal is secure. While the various protective elements are likely
to change,  such changes as can be  visualized  are most  unlikely to impair the
fundamentally strong position of such issues.

Aa--Bonds  which are rated Aa are judged to be of high quality by all standards.
Together with the Aaa group they comprise what are generally known as high grade
bonds.  They are rated lower than the best bonds  because  margins of protection
may not be as large as in Aaa securities or  fluctuation of protective  elements
may be of greater  amplitude or there may be other  elements  present which make
the long-term  risks appear  somewhat  larger than in Aaa  securities.  A--Bonds
which are rated A possess many  favorable  investment  attributes  and are to be
considered  as upper  medium  grade  obligations.  Factors  giving  security  to
principal  and interest  are  considered  adequate,  but elements may be present
which suggest a susceptibility to impairment some time in the future.

Baa--Bonds which are rated Baa are considered as medium grade obligations, i.e.,
they are neither  highly  protected nor poorly  secured.  Interest  payments and
principal  security  appear  adequate  for the present,  but certain  protective
elements may be lacking or may be  characteristically  unreliable over any great
length of time. Such bonds lack outstanding investment  characteristics,  and in
fact, have speculative characteristics as well.

Ba--Bonds which are rated Ba and below are judged to have speculative  elements;
their future  cannot be  considered  as well  secured.  Often the  protection of
interest  and  principal  payments  may be very  moderate  and  thereby not well
safeguarded  during  both good and bad times  over the  future.  Uncertainty  of
position characterizes bonds in this class.

B--Bonds  which are rated B  generally  lack  characteristics  of the  desirable
investment.  Assurance of interest and principal  payments or of  maintenance of
other terms of the contract over any long period of time may be small.

Caa--Bonds  which are  rated  Caa are a poor  standing.  Such  issues  may be in
default or there may be present  elements of danger with respect to principal or
interest.

Ca--Bonds  which are rated Ca represent  obligations  which are speculative in a
high degree. Such issues are often in default or have other marked shortcomings.

Note:  Moody's  applies  numerical  modifiers 1, 2, and 3 in each generic rating
classification  from Aa  through B in its  corporate  bond  rating  system.  The
modifier 1 indicates  that the security  ranks in the higher end of this generic
rating category;  the modifier 2 indicates a mid-range ranking; and the modifier
3  indicates  that  the  issue  ranks in the  lower  end of its  generic  rating
category.

Standard & Poor's Corporation

AAA--Debt  rated AAA has the  highest  rating  assigned  by  Standard  & Poor's.
Capacity to pay interest and repay principal is extremely strong.

AA--Debt rated AA has a very strong capacity to pay interest and repay principal
and differs from the highest rated issues only in small degree.

A--Debt  rated A has a strong  capacity  to pay  interest  and  repay  principal
although it is somewhat more  susceptible  to the adverse  effects of changes in
circumstances and economic conditions than debt in higher rated categories.

BBB--Debt  rated BBB is regarded as having an adequate  capacity to pay interest
and  repay  principal.   Whereas  it  normally  exhibits   adequate   protection
parameters,  adverse  economic  conditions  or changing  circumstances  are more
likely to lead to a weakened  capacity to pay interest and repay  principal  for
debt in this category than for debt in higher rated categories.

BB--B--CCC--CC--Bonds  rated  BB, B, CCC and CC are  regarded,  on  balance,  as
predominantly  speculative with respect to the issuer's capacity to pay interest
and repay principal in accordance with the terms of the obligation. BB indicates
the lowest degree of speculation and CC the highest degree of speculation. While
such bonds will likely have some quality and protective  characteristics,  these
are  outweighed  by large  uncertainties  or major  risk  exposures  to  adverse
conditions.

Note:  Standard & Poor's  applies the  modifiers  of (+) or (-) in each  generic
rating classification from "AA" through "B" in its corporate bond rating system.
The plus  sign  indicates  that the  security  ranks in the  higher  end of this
generic rating category;  the lack of a modifier  indicates a mid-range ranking;
and the  minus  sign  indicates  that the  issue  ranks in the  lower end of its
generic rating category.

DESCRIPTION OF COMMERCIAL  PAPER  RATINGS(AS  PUBLISHED BY THE RATING  SERVICES)
Moody's Investors Service, Inc.

Moody's  employs the following three  designations,  all judged to be investment
grade, to indicate the relative repayment capacity of rated issuers:

Prime-1 Highest Quality

Prime-2 Higher Quality

Prime-3 High Quality

If an issuer  represents to Moody's that its commercial  paper  obligations  are
supported  by the credit of another  entity or entities,  Moody's,  in assigning
ratings to such  issuers,  evaluates  the  financial  strength of the  indicated
affiliated   corporations,   commercial  banks,  insurance  companies,   foreign
governments  or other  entities,  but only as one  factor  in the  total  rating
assessment.

Standard & Poor's Corporation

A brief  description  of the  applicable  Standard & Poor's  rating  symbols for
investment grade commercial paper and their meanings follows:

A.   Issues  assigned  this  highest  rating are regarded as having the greatest
     capacity for timely  payment.  Issues in this category are delineated  with
     the numbers 1, 2, and 3 to indicate the relative degree of safety.

     A-1. This designation  indicates that the degree of safety regarding timely
          payment is either overwhelming or very strong. Those issues determined
          to possess overwhelming safety  characteristics will be denoted with a
          plus (+) sign designation.

     A-2. Capacity for timely payment on issues with this designation is strong.
          However,  the  relative  degree of safety is not as high as for issues
          designated "A-1."

     A-3. Issues  carrying this  designation  have a  satisfactory  capacity for
          timely  payment.  They are,  however,  somewhat more vulnerable to the
          adverse effects of changes in circumstances than obligations  carrying
          the higher designations.

                              FINANCIAL STATEMENTS

Data from the most recent annual report begins on the next page.
<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.

*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
                                                                   ========
<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>


                                     PART C
                                OTHER INFORMATION

Item 24.  Financial Statements and Exhibits

(a)        (1) Financial statements included in Part A:

               Financial Highlights

          (2)  Financial Statements included in Part B:

   
               Audited  financial  statements  as of  and  for  the  year  ended
               December  31,  1997:   Statements  of  Assets  and   Liabilities*
               Investments in Securities*  Statements of Operations*  Statements
               of Changes in Net Assets (for the two-year  period ended December
               31, 1997)* Notes to Financial  Statements  Independent  Auditors'
               Report
    

               *Separate  statements  are  prepared  for each  Fund of the Ultra
               Series Fund.

               There are no financial statements included in Part C.

(b)      Exhibits:

          (1)  Amended and Restated Declaration of Trust. Incorporated herein by
               reference to post-effective amendment number 19 to this Form N-1A
               registration   statement   (File  No.  2-87775)  filed  with  the
               Commission on February 28, 1997.

          (2)  Amended and Restated Bylaws.  Incorporated herein by reference to
               post-effective amendment number 19 to this Form N-1A registration
               statement  (File  No.  2-87775)  filed  with  the  Commission  on
               February 28, 1997.

          (3)  Not Applicable

          (4)  Not Applicable

          (5)  A.  Management  Agreement  effective  May 1,  1997.  Incorporated
               herein by reference to post-effective amendment number 19 to this
               Form N-1A  registration  statement  (File No. 2-87775) filed with
               the Commission on February 28, 1997.

               B. Servicing Agreement between Century Life of America (now known
               as CUNA Mutual Life  Insurance  Company)  and Century  Investment
               Management  Co.  (now known as CIMCO Inc.)  effective  October 1,
               1994.   Incorporated   herein  by  reference  to   post-effective
               amendment  number  19 to this Form  N-1A  registration  statement
               (File No.  2-87775)  filed with the  Commission  on February  28,
               1997.

               C. Servicing Agreement between Century Investment  Management Co.
               (now  known as CIMCO  Inc.)  and CUNA  Mutual  Insurance  Society
               effective  July 17,  1993.  Incorporated  herein by  reference to
               post-effective amendment number 19 to this Form N-1A registration
               statement  (File  No.  2-87775)  filed  with  the  Commission  on
               February 28, 1997.


          (6)  Distribution   Agreement  between  Ultra  Series  Fund  and  CUNA
               Brokerage   Services,   Inc.   effective   December   29,   1993.
               Incorporated  herein by  reference  to  post-effective  amendment
               number  19 to this  Form N-1A  registration  statement  (File No.
               2-87775) filed with the Commission on February 28, 1997.

          (7)  Not Applicable

          (8)  A.  Custodian  Agreement  with United States Trust Company of New
               York dated June 24, 1993. Assumed by Chase Manhattan on September
               2,  1995.  Incorporated  herein by  reference  to  post-effective
               amendment  number  19 to this Form  N-1A  registration  statement
               (File No.  2-87775)  filed with the  Commission  on February  28,
               1997.

               B. Cash Data Entry  Agreement  with United  States Trust  Company
               dated June 24, 1993.  Assumed by Chase  Manhattan on September 2,
               1995.   Incorporated   herein  by  reference  to   post-effective
               amendment  number  19 to this Form  N-1A  registration  statement
               (File No.  2-87775)  filed with the  Commission  on February  28,
               1997.

   
               C. Custodian  Agreement with State Street Bank and Trust Company.
               Incorporated  herein by  reference  to  post-effective  amendment
               number  20 to this  Form N-1A  registration  statement  (File No.
               2-87775) filed with the Commission on April 22, 1997.
    

          (9)  Not Applicable

          (10) Opinion  of  Counsel.   Incorporated   herein  by   reference  to
               post-effective amendment number 19 to this Form N-1A registration
               statement  (File  No.  2-87775)  filed  with  the  Commission  on
               February 28, 1997.

          (11) A. Consent of KPMG Peat Marwick LLP

          (12) Not Applicable

          (13) A.  Termination  Agreement  dated  December  31, 1993  concerning
               Agreement  Governing   Contribution  dated  September  30,  1983.
               Incorporated  herein by  reference  to  post-effective  amendment
               number  19 to this  Form N-1A  registration  statement  (File No.
               2-87775) filed with the Commission on February 28, 1997.

               Agreement   Governing   Contribution.   Incorporated   herein  by
               reference to post-effective amendment number 19 to this Form N-1A
               registration   statement   (File  No.  2-87775)  filed  with  the
               Commission on February 28, 1997.

               B.  Termination  Agreement  dated  December  31, 1993  concerning
               Agreement Governing Contribution dated May 31, 1988. Incorporated
               herein by reference to post-effective amendment number 19 to this
               Form N-1A  registration  statement  (File No. 2-87775) filed with
               the Commission on February 28, 1997.

               Agreement   Governing   Contribution.   Incorporated   herein  by
               reference to post-effective amendment number 19 to this Form N-1A
               registration   statement   (File  No.  2-87775)  filed  with  the
               Commission on February 28, 1997.

               C. Termination of Expense  Reimbursement  Agreement dated January
               16, 1997, effective May 1, 1997. Incorporated herein by reference
               to   post-effective   amendment  number  19  to  this  Form  N-1A
               registration   statement   (File  No.  2-87775)  filed  with  the
               Commission on February 28, 1997.

   
               D.  Expense  Reimbursement  Agreement.   Incorporated  herein  by
               reference to post-effective amendment number 19 to this Form N-1A
               registration   statement   (File  No.  2-87775)  filed  with  the
               Commission on February 28, 1997.
    
          (14) Not Applicable

          (15) Plan of Distribution  dated May 1, 1997.  Incorporated  herein by
               reference to post-effective amendment number 19 to this Form N-1A
               registration   statement   (File  No.  2-87775)  filed  with  the
               Commission on February 28, 1997.

          (16) Schedule  for  Computation.  Incorporated  herein by reference to
               post-effective amendment number 19 to this Form N-1A registration
               statement  (File  No.  2-87775)  filed  with  the  Commission  on
               February 28, 1997.

          (17) Financial Data Schedules.

          (18) Multi-Class   Plans.   Incorporated   herein  by   reference   to
               post-effective amendment number 19 to this Form N-1A registration
               statement  (File  No.  2-87775)  filed  with  the  Commission  on
               February 28, 1997.

          (19) Powers of Attorney.

Item 25.  Persons Controlled by or Under Common Control with Registrant

The shares of the Ultra Series Fund are currently  sold to separate  accounts of
CUNA Mutual Life  Insurance  Company.  See Part A MANAGEMENT OF THE ULTRA SERIES
FUND, CUNA Mutual Life Insurance Company and Part B THE INVESTMENT ADVISER for a
description of related parties.

CUNA  Mutual  Life  Insurance  Company is a mutual  life  insurance  company and
therefore is  controlled  by its  contractowners.  Various  companies  and other
entities  are  controlled  by CUNA  Mutual  Life  Insurance  Company and various
companies  may be  considered  to be under common  control with CUNA Mutual Life
Insurance Company. Such other companies and entities, together with the identity
of their controlling persons (where applicable),  are set forth in the following
organization  charts.  In  addition,  by virtue  of an  Agreement  of  Permanent
Affiliation with CUNA Mutual Insurance Society ("CUNA Mutual"), the Ultra Series
Fund could be considered to be an affiliated  person or an affiliated  person of
an affiliated person of CUNA Mutual.  Likewise,  CUNA Mutual and its affiliates,
together with the identity of their controlling persons (where applicable),  are
set forth on the following organization charts.

                 See organization charts on the following pages.


<PAGE>


                       CUNA Mutual Life Insurance Company

                  ORGANIZATIONAL CHART AS OF DECEMBER 31, 1997

CUNA Mutual Life Insurance Company
         An Iowa mutual life insurance company
         Fiscal Year End:  December 31
         CUNA Mutual Life Insurance  Company is the controlling  company for the
         following subsidiaries:

         1.       Red Fox Motor Hotel Corporation
                  An Iowa Business Act Corporation.
                  100% ownership by CUNA Mutual Life Insurance Company
                  Business:  Operation of Red Fox Inn, a motel
                  Classes of Stock:  Common only
                  Authorized Shares:  1,000 nonpar
                  Issued Shares:  242.7821
                  Capital Structure:
                           Stated capital:  $242,782
                           Add. paid-in:  $0
                           Ret. earn:  ($14,447)
                           Total Equity:  $257,229
                  Sole Shareholder:  CUNA Mutual Life Insurance Company
                  Fiscal Year End:  December 31

         2.       CIMCO Inc.
                  An Iowa Business Act Corporation
                  50% ownership by CUNA Mutual Life Insurance Company
                  50% ownership by CUNA Mutual Investment Corporation
                  Business:  Registered Investment Advisor
                  Classes of Stock:  Non-assessable
                  Authorized Shares:  500,000 nonpar
                  Issued Shares:  100
                  Capital Structure:
                           Stated capital:  $10,000
                           Add. paid-in:  $520,000
                           Ret. earn.:  $435,660
                           Total Equity:  $965,660
                  Equal Shareholders:  CUNA Mutual Life Insurance Company & 
                                       CUNA Mutual Investment Corporation
                  Fiscal Year End:  December 31
                  CIMCO Inc. is the investment adviser of:

                  a.       The Ultra Series Fund
                           A Massachusetts Business Trust
                           Domiciled in Iowa
                           Business:  Open-end diversified management investment
                                     company offered through insurance contracts
                           Shareholders:  Three  separate  accounts of CUNA 
                           Mutual Life Insurance Company hold legal title for 
                           the benefit of policyowners.
                           Principal Underwriter:  CUNA Brokerage Services, Inc.
                           Fiscal Year End:  December 31

         3.       Plan America Program, Inc.
                  A Maine Business Act Corporation
                  100% ownership by CUNA Mutual Life Insurance Company
                  Business:  Quasi-public corporation, operating an insurance 
                             business
                  Classes of Stock:  Voting common only
                  Authorized Shares:  5,000 of $1.00 par
                  Issued Shares:  100
                  Capital Structure:
                           Stated capital:  $500
                  Sole Shareholder:  CUNA Mutual Life Insurance Company
                  Fiscal Year End:  December 31

                          CUNA Mutual Insurance Society

                              ORGANIZATIONAL CHART
                             AS OF DECEMBER 31, 1997

CUNA Mutual Insurance Society
         Business:  Life Health & Disability Insurance
         May 20, 1935*
         State of domicile:  Wisconsin
         CUNA Mutual  Insurance  Society,  either  directly or indirectly is the
         controlling company of the following wholly-owned subsidiaries:


         1.       CUNA Mutual Investment Corporation
                  Business:  Holding Company
                  September 15, 1972*
                  State of domicile:  Wisconsin
                  CUNA  Mutual  Investment  Corporation  is  the  owner  of  the
                  following subsidiaries:

                  a.       CUMIS Insurance Society, Inc.
                           Business:  Corporate Property/Casualty
                           May 23, 1960*
                           State of domicile:  Wisconsin
                           CUMIS Insurance Society, Inc. is the 100% owner of 
                           the following subsidiary:

                           Credit Union Mutual Insurance Society New Zealand Ltd
                           Business:  Fidelity Bond Coverages
                           November 1, 1990*
                           State of domicile:  Wisconsin

                  b.       CUMIS General Insurance Company
                           Business:  Individual Property/Casualty
                           January 1, 1983*
                           State of domicile:  Michigan

                  c.       CUNA Brokerage Services, Inc.
                           Business:  Brokerage
                           July 19, 1985*
                           State of domicile:  Wisconsin

                  d.       CUNA Mutual General Agency of Texas, Inc.
                           Business:  Managing General Agent
                           August 14, 1991*
                           State of domicile: Texas

                  e.       MEMBERS Life Insurance Company
                           Business:  Credit Disability/Life/Health
                           February 27, 1976*
                           State of domicile:  Wisconsin
                           Formerly CUMIS Life & CUDIS

                  f.       International Commons, Inc.
                           Business:  Special Events
                           January 13, 1981*
                           State of domicile:  Wisconsin

                  g.       CUNA Mortgage Corporation
                           Business:  Mortgage Servicing
                           November 20, 1978*
                           State of domicile:  Wisconsin

                  h.       Investors Equity Insurance Company, Inc.
                           Business:  Private Mortgage Insurance
                           April 14, 1994*
                           State of Domicile:  California

                  i.       CUNA Mutual Insurance Agency, Inc.
                           Business:  Leasing/Brokerage
                           March 1, 1974*
                           State of domicile:  Wisconsin
                           Formerly CMCI Corporation

                           CUNA Mutual Insurance Agency, Inc. is the 100% owner 
                           of the following subsidiaries:

                           (1)   CM Field Services, Inc.
                                 Business:  Serves Agency Field Staff
                                 January 26, 1994*
                                 State of domicile:  Wisconsin

                           (2)   CUNA Mutual Insurance Agency of Alabama, Inc.
                                 Business:  Property & Casualty Agency
                                 May 27, 1993*
                                 State of domicile:  Alabama

                           (3)   CUNA Mutual Insurance Agency of New Mexico, Inc
                                 Business:  Brokerage of Corporate & Personal 
                                  Lines
                                 June 10, 1993*
                                 State of domicile:  New Mexico

                           (4)   CUNA Mutual Insurance Agency of Hawaii, Inc.
                                 Business:  Property & Casualty Agency
                                 June 10, 1993*
                                 State of domicile:  Hawaii

                           (5)   CUNA Mutual Casualty Insurance Agency of 
                                  Mississippi, Inc.
                                 Business:  Property & Casualty Agency
                                 June 24, 1993*
                                 State of domicile:  Mississippi

                           (6)   CUNA Mutual Insurance Agency of Kentucky, Inc.
                                 Business:  Brokerage of Corporate & Personal
                                  Lines
                                 October 5, 1994*
                                 State of domicile:  Kentucky

                           (7)   CUNA Mutual Insurance Agency of Massachusetts, 
                                  Inc.
                                 Business:  Brokerage of Corporate & Personal 
                                  Lines
                                 January 27, 1995*
                                 State of domicile:  Massachusetts

         2.       C.U.I.B.S. Pty. Ltd.
                  Business:  Brokerage
                  February 18, 1981*
                  Country of domicile:  Australia

*Dates shown are dates of acquisition, control or organization.


CUNA  Mutual  Insurance  Society,  either  directly  or  through a  wholly-owned
subsidiary, has a partial ownership interest in the following:

1.     C. U. Family Insurance Services, Inc./Colorado
       50% ownership by CUNA Mutual Insurance Agency, Inc.
       50% ownership by Colleague Services Corporation
       September 1, 1981

2.     C. U. Insurance Services, Inc./Oregon
       50% ownership by CUNA Mutual Insurance Agency, Inc.
       50% ownership by Oregon Credit Union League
       December 27, 1989

3.     CUFIS of New York, Inc.
       50% ownership by CUNA Mutual Insurance Agency,  Inc. 50% ownership by CUC
       Services, Inc.
       March 28, 1991

4.     The CUMIS Group Limited
       63.5% ownership by CUNA Mutual Insurance Society (as of 12-31-97)

5.     CIMCO Inc. (CIMCO)
       50% ownership by CUNA Mutual Investment Corporation 50% ownership by CUNA
       Mutual Life Insurance Company January 1, 1992

6.     Cooperative  Savings and Credit  Unions  Insurance  Society  "Benefit" SA
       (Poland) 70.9% ownership by CUNA Mutual Insurance Society 15.3% ownership
       by CUMIS Insurance Society, Inc. 13.8% ownership by Foundation for Polish
       Credit Unions September 1, 1992

7.     GWARANT, Ltd.
       50%  ownership  by  CUNA  Mutual  Insurance   Society  50%  ownership  by
       Foundation for Polish Credit Unions February 18, 1994

8.     CUNA Mutual Insurance Agency of Ohio, Inc.
       1% of value owned by Michael Corcoran (CUNA Mutual Employee) subject to a
       voting  trust  agreement,  Michael B. Kitchen as Voting  Trustee.  99% of
       value  owned  by  CUNA  Mutual  Insurance   Agency,   Inc.  Due  to  Ohio
       regulations,  CUNA Mutual Insurance Agency, Inc. holds no voting stock in
       this corporation.
       June 14, 1993

9.     Security Management Company, Ltd. (Hungary)
       90% ownership by CUNA Mutual Insurance Society
       10% ownership by:  Federation of Savings Cooperatives
       Savings Cooperative of Szoreg
       Savings Cooperative of Szekkutas (collectively Hungarian Associates)
       September 5, 1992

10.    CMG Mortgage Insurance Company
       55% ownership by CUNA Mutual Investment  Corporation 45% ownership by PMI
       Mortgage Insurance Co.
       April 14, 1994


Limited Liability Companies

1.     "Sofia LTD." (Ukraine)
       99.96% CUNA Mutual Insurance Society
       .04% CUMIS Insurance Society, Inc.
       March 6, 1996

       a.      `FORTRESS' (Ukraine)
               80% "Sofia LTD."
               19% The Ukrainian National Association of Savings and Credit 
                    Unions
               1% Service Center by UNASCU
               September 25, 1996

2.     CUNA  Mortgage   Assistance,   L.L.C.   50%  interest  by  CUNA  Mortgage
       Corporation 50% interest by CUNA Service Group, Inc.
       November 7, 1995


Stock Corporation - CUNA Mutual Group owns less than 50%

1.     Cooperators  Life  Assurance   Society  Limited   (Jamaica)  CUNA  Mutual
       Insurance  Society owns 122,500  shares Jamaica Co-op Credit Union League
       owns 127,500 shares (NOTE:  Awaiting authority to write business) May 10,
       1990

2.     CUNA Caribbean Insurance Society Limited (Trinidad and Tobago, W.I.)
       47.96% ownership by CUNA Mutual Insurance Society
       July 4, 1985

3.     CU Interchange Group, Inc.
       Owned by CUNA  Mutual  Investment  Corporation,  CUNA  Service  Group and
       various  state  league  organizations  December  15,  1993 - CUNA  Mutual
       Investment Corporation purchased 100 shares stock

4.     CUNA Service Group, Inc.
       April 22, 1974 - CUNA Mutual Insurance Society purchased 200.71 shares

5.     "Benevita LKS" (Russia)
       49% CUNA Mutual Insurance Society
       51% League of Credit Unions
       December 7, 1995

6.     Credit Union Service Corporation
       Owned  by CUNA  Mutual  Investment  Corporation,  Credit  Union  National
       Association, Inc. and 18 state league organizations March 29, 1996 - CUNA
       Mutual Investment Corporation purchased 1,300,000 shares of stock


Partnerships

   
1.     LeaSo Partners, a California partnership
       CUNA Mutual Insurance Society - 50% Partner
       California Credit Union League - 50% Partner
       December 29, 1981

2.     CM CUSO Limited Partnership, a Washington Partnership
       CUMIS Insurance Society, Inc. - General Partner
       Credit Unions in Washington - Limited Partners
       June 14, 1993
    


Affiliated (Nonstock)

1.     NARCUP, Inc.
       August 8, 1978

2.     CUNA Mutual Group Foundation, Inc.
       July 5, 1967

3.     CUNA Mutual Life Insurance Company
       July 1, 1990

4.     Aseguradora  Solidaria de Colombia  (formerly  Seguros  UCONAL  Limitada)
       17.2% membership by CUNA Mutual Insurance Society July 2, 1985


Item 26.  Number of Holders of Securities
                                                     Number of Shareholders
Fund                                                 as of March 31, 1998

   
Capital Appreciation Stock                                    10
Growth and Income Stock                                       10
Balanced                                                      10
Bond                                                          10
Money Market                                                  10
Treasury 2000                                                 10
    

Item 27.  Indemnification

Each officer,  Trustee or agent of the Ultra Series Fund shall be indemnified by
the Ultra Series Fund to the full extent permitted under the General Laws of the
State of  Massachusetts  and the  Investment  Company  Act of 1940,  as amended,
except  that such  indemnity  shall not  protect  any such  person  against  any
liability  to the Ultra  Series  Fund or any  shareholder  thereof to which such
person would otherwise be subject by reason of willful  misfeasance,  bad faith,
gross negligence or reckless  disregard of the duties involved in the conduct of
his office ("disabling conduct"). Indemnification shall be made when (1) a final
decision  on the  merits  is made by a court  or  other  body  before  whom  the
proceeding  was  brought,  that the person to be  indemnified  was not liable by
reason of  disabling  conduct  or,  (2) in the  absence  of such a  decision,  a
reasonable  determination,  based upon a review of the facts, that the person to
be indemnified was not liable by reason of disabling conduct, by (a) the vote of
a majority of the quorum of  Trustees  who are not  "interested  persons" of the
Ultra Series Fund as defined in Section  2(a)(19) of the Investment  Company Act
of 1940, or (b) an  independent  legal counsel in a written  opinion.  The Ultra
Series  Fund may,  by vote of a  majority  of a quorum of  Trustees  who are not
interested  persons,  advance  attorneys'  fees or other  expenses  incurred  by
officers, Trustees,  Investment Advisers or principal underwriters, in defending
a  proceeding  upon  the  undertaking  by or  on  behalf  of  the  person  to be
indemnified to repay the advance unless it is ultimately  determined  that he is
entitled to  indemnification.  Such advance  shall be subject to at least one of
the following: (1) the person to be indemnified shall provide a security for his
undertaking,  (2) the Ultra Series Fund shall be insured  against losses arising
by  reason  of  any  lawful  advances,  or (3) a  majority  of a  quorum  of the
disinterested  non-party  Trustees of the Ultra Series Fund,  or an  independent
legal  counsel  in a  written  opinion,  shall  determine,  based on a review of
readily  available facts,  that there is reason to believe that the person to be
indemnified ultimately will be found entitled to indemnification.

Insofar as  indemnification  for liability  arising under the  Securities Act of
1933 may be permitted to  directors,  officers  and  controlling  persons of the
Registrant pursuant to the foregoing  provisions,  or otherwise,  the Registrant
has been advised that, in the opinion of the Securities and Exchange Commission,
such indemnification is against public policy as expressed in the Securities Act
of  1933  and is,  therefore,  unenforceable.  In the  event  that a  claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses  incurred or paid by a director,  officer or  controlling
person of the  registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against  public policy as expressed in the  Securities
Act of 1933 and will be governed by the final adjudication of such issue.

Item 28.  Business and Other Connections of Investment Adviser

The  Investment  Adviser  for the Ultra  Series  Fund is CIMCO  Inc.  See Part A
MANAGEMENT OF THE ULTRA SERIES FUND, The Investment  Adviser for a more complete
description.

      NAME                                POSITION HELD

  Michael S. Daubs                       CIMCO Inc.
                                         President
                                         1982 - Present
                                         Director
                                         1995-Present

                                         CUNA Mutual Life Insurance Company
                                         Chief Investment Officer
                                         1989 - Present

                                         CUNA Mutual Insurance Society
                                         Chief Investment Officer
                                         1990 - Present

  Lawrence R. Halverson                  CIMCO Inc.
                                         Senior Vice President and Secretary
                                         1996 - Present

                                         Vice President and Secretary
                                         1992 - 1996

                                         CUNA Brokerage Services, Inc.
                                         President
                                         1996 - Present

  Joyce A. Harris                        CIMCO Inc.
                                         Director and Chair
                                         1992 - Present

                                         Telco Community Credit Union
                                         President, Chief Executive Officer
                                         1978 - Present

  James C. Hickman                       CIMCO Inc.
                                         Director
                                         1992 - Present

                                         University of Wisconsin
                                         Professor
                                         1972 - Present

  Michael B. Kitchen                     CIMCO Inc.
                                         Director
                                         1995 - Present

                                         CUNA Mutual Life Insurance Company
                                         President and Chief Executive Officer
                                         1995 - Present

                                         CUNA Mutual Insurance Society
                                         President and Chief Executive Officer
                                         1995 - Present

  George A. Nelson                       CIMCO Inc.
                                         Director and Vice  Chair
                                         1992 - Present

                                         Evening Telegram Co. - WISC-TV
                                         Vice President
                                         1982 - Present


Item 29.  Distributor

          a.   CUNA Brokerage Services, Inc., a registered broker-dealer, is the
               principal  Distributor  of the shares of the Ultra  Series  Fund.
               CUNA  Brokerage   Services,   Inc.  does  not  act  as  principal
               underwriter,  depositor or investment  adviser for any investment
               company  other than the  Registrant,  CUNA Mutual  Life  Variable
               Account, and CUNA Mutual Life Variable Annuity Account.

          b.   The officers and directors of CUNA Brokerage  Services,  Inc. are
               as follows:
<TABLE>
<CAPTION>

Name and Principal                        Position with Distributor               Positions and Offices
 Business Address                                                                    with Registrant
<S>                                     <C>                                    <C>
   
Lawrence R. Halverson                     Director                                Vice President and Secretary
5910 Mineral Point Road                   President
Madison, WI 53705
    

Michael G. Joneson                        Director                                Chief Accounting Officer, Treasurer,
2000 Heritage Way                         Treasurer                               and Assistant Secretary
Waverly, IA  50677

   
Marc A. Krasnick                          Director                                None
5910 Mineral Point Road                   Vice President
Madison, WI 53705

John M. Waggoner                          Chief  Officer - Legal                  None
5910 Mineral Point Road
    
Madison, WI  53705

Campbell D. McHugh                        Compliance Officer                      None
5910 Mineral Point Road
Madison, WI  53705

Brian Lasko                               Managing Principal                      None
2000 Heritage Way
Waverly, IA  50677

Sandra K. Steffeney                       Vice President                          None
33320 9th Avenue South
Suite 250
Federal Way, WA  98063-3919

   
John C. Fritsche                          Assistant Vice President                None
2000 Heritage Way
Waverly, IA  50677

Scott Vignovich                           Assistant Vice President                Administration  & Operations  Officer
2000 Heritage Way                                                                 - Broker/Dealer
Waverly, IA  50677

Donna C. Blankenheim                      Assistant Secretary                     None
5910 Mineral Point Road
Madison, WI  53705

Janice C. Doyle                           Assistant Secretary                     None
5910 Mineral Point Road
Madison, WI  53705

Barbara L. Secor                          Assistant Secretary                     None
2000 Heritage Way
Waverly, IA  50677

Jason E. Smith                            Assistant Secretary                     None
5910 Mineral Point Road
Madison, WI  53705

Timothy L. Carlson                        Assistant Treasurer                     None
2000 Heritage Way
Waverly, IA  50677

Michael A. Ullsperger                     Assistant Treasurer                     None
5910 Mineral Point Road
Madison, WI  53705

John W. Wiley                             Associate Compliance Officer            None
5910 Mineral Point Road
Madison, WI  53705

Joanne M. Toay                            Associate Compliance Officer            None
5910 Mineral Point Road
Madison, WI  53705
    
</TABLE>

          c.   There  have been no  commissions  or other  compensation  paid by
               Registrant to the Distributor.

Item 30.  Location of Accounts and Records

The accounts,  books and other documents required to be maintained by Registrant
pursuant to Section  31(a) of the  Investment  Company Act of 1940 and the rules
promulgated  thereunder are maintained by the CUNA Mutual Life Insurance Company
at 2000 Heritage Way,  Waverly,  Iowa 50677 or at CIMCO Inc., 5910 Mineral Point
Road, Madison, Wisconsin 53705 or at CUNA Mutual Insurance Society, 5910 Mineral
Point Road, Madison, Wisconsin 53705.

Item 31.  Management Services

Not Applicable

Item 32.  Undertakings

(a)      Not applicable.

(b)      Not applicable.

(c)      Registrant  undertakes  to furnish each person to whom a prospectus  is
         delivered a copy of the  registrant's  annual  report to  shareholders,
         upon request and without charge.

(d)      The registrant  undertakes,  if requested to do so by the holders of at
         least 10% of the votes represented by its outstanding shares, to call a
         meeting of shareholders  for the purpose of voting upon any question of
         removal of any  Trustee or  Trustees,  and to assist in  communications
         with  shareholders  as  required  by  Section  16(c) of the  Investment
         Company Act of 1940, as amended.



<PAGE>

                                   SIGNATURES

   
As  required by the  Securities  Act of 1933 and the  Investment  Company Act of
1940, the Registrant  certifies that it meets the requirements of Securities Act
Rule 485(b) for effectiveness of this Registration Statement and has caused this
Registration Statement to be signed on its behalf, in the City of Madison, State
of Wisconsin, on the 8th day of April, 1998.
    


                                    ULTRA SERIES FUND



                                    By: /s/ Michael S. Daubs
                                    Michael S. Daubs, President


<PAGE>


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

SIGNATURES AND TITLE                                                   DATE


Gwendolyn M. Boeke*
Gwendolyn M. Boeke, Trustee


Alfred L. Disrud*
Alfred L. Disrud, Trustee


Keith S. Noah*
Keith S. Noah, Trustee


Thomas C. Watt*
Thomas C. Watt, Trustee


/s/  Linda L. Lilledahl                                               04/08/98
Linda L. Lilledahl, Attorney-In-Fact


   
Lawrence R. Halverson*
Lawrence R. Halverson, Trustee


Michael S. Daubs*
Michael S. Daubs, Trustee
    


* Pursuant to Powers of Attorney filed herewith

<PAGE>

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


SIGNATURES AND TITLE                                                   DATE


/s/  Michael S. Daubs                                                04/08/98
Michael S. Daubs, President


/s/  Robert M. Buckingham                                            04/08/98
Robert M. Buckingham, Chief Financial
Officer and Assistant Secretary


/s/  Michael G. Joneson                                              04/08/98
Michael G. Joneson, Chief Accounting
Officer, Treasurer and Assistant Secretary

<PAGE>

                              INDEX TO EXHIBITS TO

                                  FORM N-1A FOR

                                ULTRA SERIES FUND



11.      A.       Consent of KPMG Peat Marwick

17.      Financial Data Schedules

19.      Powers of attorney

<PAGE>

                                   EXHIBIT 11.A.

The Trustees and Shareholders of Ultra Series Fund:

We consent to the use of our report  included herein and to the reference to our
Firm  under  the  heading  "Financial  Highlights"  in  Part A and  "Independent
Auditors" in Part B of Form N-1A Post  Effective  Amendment for the Ultra Series
Fund.


                                                  KPMG Peat Marwick LLP


Des Moines, Iowa
April 17, 1998

<PAGE>

   
                            LIMITED POWER OF ATTORNEY


KNOW ALL PERSONS BY THESE PRESENTS,  that I, the  undersigned,  a Trustee of the
ULTRA SERIES FUND (the "Fund"),  a business trust duly organized  under the laws
of the State of Massachusetts,  do hereby appoint,  authorize, and empower Linda
L. Lilledahl and Gerald T. Conklin,  severally, as my attorney and agent, for me
and in my name as a Trustee of the Fund on behalf of the Fund or otherwise  with
full power to review, execute, deliver and file with the Securities and Exchange
Commission  all  necessary  post-effective  amendments to Form N-1A filed by the
Fund,  Registration No. 2-87775,  as may be required under the Securities Act of
1933, as amended,  and the Investment Company Act of 1940, as amended, and to do
and  perform  each and  every  act that  said  attorney  may deem  necessary  or
advisable to comply with the intent of the aforesaid Acts.

WITNESS my hand and seal this 26th day of February, 1998.


                                                /s/ Gwendolyn M. Boeke
                                                Trustee for Ultra Series Fund
    

<PAGE>

   
                            LIMITED POWER OF ATTORNEY


KNOW ALL PERSONS BY THESE PRESENTS,  that I, the  undersigned,  a Trustee of the
ULTRA SERIES FUND (the "Fund"),  a business trust duly organized  under the laws
of the State of Massachusetts,  do hereby appoint,  authorize, and empower Linda
L. Lilledahl and Gerald T. Conklin,  severally, as my attorney and agent, for me
and in my name as a Trustee of the Fund on behalf of the Fund or otherwise  with
full power to review, execute, deliver and file with the Securities and Exchange
Commission  all  necessary  post-effective  amendments to Form N-1A filed by the
Fund,  Registration No. 2-87775,  as may be required under the Securities Act of
1933, as amended,  and the Investment Company Act of 1940, as amended, and to do
and  perform  each and  every  act that  said  attorney  may deem  necessary  or
advisable to comply with the intent of the aforesaid Acts.

WITNESS my hand and seal this 26th day of February, 1998.


                                                /s/ Michael S. Daubs
                                                Trustee for Ultra Series Fund
    

<PAGE>

   
                            LIMITED POWER OF ATTORNEY


KNOW ALL PERSONS BY THESE PRESENTS,  that I, the  undersigned,  a Trustee of the
ULTRA SERIES FUND (the "Fund"),  a business trust duly organized  under the laws
of the State of Massachusetts,  do hereby appoint,  authorize, and empower Linda
L. Lilledahl and Gerald T. Conklin,  severally, as my attorney and agent, for me
and in my name as a Trustee of the Fund on behalf of the Fund or otherwise  with
full power to review, execute, deliver and file with the Securities and Exchange
Commission  all  necessary  post-effective  amendments to Form N-1A filed by the
Fund,  Registration No. 2-87775,  as may be required under the Securities Act of
1933, as amended,  and the Investment Company Act of 1940, as amended, and to do
and  perform  each and  every  act that  said  attorney  may deem  necessary  or
advisable to comply with the intent of the aforesaid Acts.

WITNESS my hand and seal this 26th day of February, 1998.


                                                /s/ Al Disrud
                                                Trustee for Ultra Series Fund
    

<PAGE>

   
                            LIMITED POWER OF ATTORNEY


KNOW ALL PERSONS BY THESE PRESENTS,  that I, the  undersigned,  a Trustee of the
ULTRA SERIES FUND (the "Fund"),  a business trust duly organized  under the laws
of the State of Massachusetts,  do hereby appoint,  authorize, and empower Linda
L. Lilledahl and Gerald T. Conklin,  severally, as my attorney and agent, for me
and in my name as a Trustee of the Fund on behalf of the Fund or otherwise  with
full power to review, execute, deliver and file with the Securities and Exchange
Commission  all  necessary  post-effective  amendments to Form N-1A filed by the
Fund,  Registration No. 2-87775,  as may be required under the Securities Act of
1933, as amended,  and the Investment Company Act of 1940, as amended, and to do
and  perform  each and  every  act that  said  attorney  may deem  necessary  or
advisable to comply with the intent of the aforesaid Acts.

WITNESS my hand and seal this 26th day of February, 1998.


                                                /s/ L.R. Halverson
                                                Trustee for Ultra Series Fund
    

<PAGE>

   
                            LIMITED POWER OF ATTORNEY



KNOW ALL PERSONS BY THESE PRESENTS,  that I, the  undersigned,  a Trustee of the
ULTRA SERIES FUND (the "Fund"),  a business trust duly organized  under the laws
of the State of Massachusetts,  do hereby appoint,  authorize, and empower Linda
L. Lilledahl and Gerald T. Conklin,  severally, as my attorney and agent, for me
and in my name as a Trustee of the Fund on behalf of the Fund or otherwise  with
full power to review, execute, deliver and file with the Securities and Exchange
Commission  all  necessary  post-effective  amendments to Form N-1A filed by the
Fund,  Registration No. 2-87775,  as may be required under the Securities Act of
1933, as amended,  and the Investment Company Act of 1940, as amended, and to do
and  perform  each and  every  act that  said  attorney  may deem  necessary  or
advisable to comply with the intent of the aforesaid Acts.

WITNESS my hand and seal this 26th day of February, 1998.


                                                /s/ Keith S. Noah
                                                Trustee for Ultra Series Fund
    

<PAGE>

   
                            LIMITED POWER OF ATTORNEY


KNOW ALL PERSONS BY THESE PRESENTS,  that I, the  undersigned,  a Trustee of the
ULTRA SERIES FUND (the "Fund"),  a business trust duly organized  under the laws
of the State of Massachusetts,  do hereby appoint,  authorize, and empower Linda
L. Lilledahl and Gerald T. Conklin,  severally, as my attorney and agent, for me
and in my name as a Trustee of the Fund on behalf of the Fund or otherwise  with
full power to review, execute, deliver and file with the Securities and Exchange
Commission  all  necessary  post-effective  amendments to Form N-1A filed by the
Fund,  Registration No. 2-87775,  as may be required under the Securities Act of
1933, as amended,  and the Investment Company Act of 1940, as amended, and to do
and  perform  each and  every  act that  said  attorney  may deem  necessary  or
advisable to comply with the intent of the aforesaid Acts.

WITNESS my hand and seal this 26th day of February, 1998.


                                                /s/ T.C. Watt
                                                Trustee for Ultra Series Fund
    

<TABLE> <S> <C>

<ARTICLE>                                            6
<SERIES>
   <NUMBER>                   1
   <NAME>                     Growth and Income
       
<S>                             <C>
<PERIOD-TYPE>                        12-MOS
<FISCAL-YEAR-END>                    DEC-31-1997
<PERIOD-START>                       JAN-01-1997
<PERIOD-END>                         DEC-31-1997
<INVESTMENTS-AT-COST>                                461510749
<INVESTMENTS-AT-VALUE>                               584882177
<RECEIVABLES>                                        8709081
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       593591258
<PAYABLE-FOR-SECURITIES>                             3154136
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            301689
<TOTAL-LIABILITIES>                                  3455825
<SENIOR-EQUITY>                                      216928
<PAID-IN-CAPITAL-COMMON>                             466534259
<SHARES-COMMON-STOCK>                                13899526
<SHARES-COMMON-PRIOR>                                21692803
<ACCUMULATED-NII-CURRENT>                            9686
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              3132
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             123371428
<NET-ASSETS>                                         590135433
<DIVIDEND-INCOME>                                    6473882
<INTEREST-INCOME>                                    881021
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       2234280
<NET-INVESTMENT-INCOME>                              5120623
<REALIZED-GAINS-CURRENT>                             94141715
<APPREC-INCREASE-CURRENT>                            84642706
<NET-CHANGE-FROM-OPS>                                99262338
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            639086
<DISTRIBUTIONS-OF-GAINS>                             3084815
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              10269759
<NUMBER-OF-SHARES-REDEEMED>                          77316
<SHARES-REINVESTED>                                  580713
<NET-CHANGE-IN-ASSETS>                               10773156
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                2108616
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      2250571
<AVERAGE-NET-ASSETS>                                 367234033
<PER-SHARE-NAV-BEGIN>                                21.32
<PER-SHARE-NII>                                      .31
<PER-SHARE-GAIN-APPREC>                              6.36
<PER-SHARE-DIVIDEND>                                 (.32)
<PER-SHARE-DISTRIBUTIONS>                            (.47)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  27.2
<EXPENSE-RATIO>                                      .61
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE>                                            6
<SERIES>
   <NUMBER>                   2
   <NAME>                     Balanced Fund
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-START>                                 JAN-01-1997
<PERIOD-END>                                   DEC-31-1997
<INVESTMENTS-AT-COST>                                269135520
<INVESTMENTS-AT-VALUE>                               310239939
<RECEIVABLES>                                        3202483
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       313442422
<PAYABLE-FOR-SECURITIES>                             3450718
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            187992
<TOTAL-LIABILITIES>                                  3638710
<SENIOR-EQUITY>                                      181994
<PAID-IN-CAPITAL-COMMON>                             268447516
<SHARES-COMMON-STOCK>                                18199350
<SHARES-COMMON-PRIOR>                                15322706
<ACCUMULATED-NII-CURRENT>                            49986
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              19797
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             41104419
<NET-ASSETS>                                         309803712
<DIVIDEND-INCOME>                                    1727637
<INTEREST-INCOME>                                    9624772
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       1728393
<NET-INVESTMENT-INCOME>                              9624016
<REALIZED-GAINS-CURRENT>                             29296729
<APPREC-INCREASE-CURRENT>                            25504114
<NET-CHANGE-FROM-OPS>                                38920745
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            9668911
<DISTRIBUTIONS-OF-GAINS>                             3841952
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              4853295
<NUMBER-OF-SHARES-REDEEMED>                          243133
<SHARES-REINVESTED>                                  851766
<NET-CHANGE-IN-ASSETS>                               5461928
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                1627496
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      1741359
<AVERAGE-NET-ASSETS>                                 252633432
<PER-SHARE-NAV-BEGIN>                                15.29
<PER-SHARE-NII>                                      .62
<PER-SHARE-GAIN-APPREC>                              1.93
<PER-SHARE-DIVIDEND>                                 (.63)
<PER-SHARE-DISTRIBUTIONS>                            (.19)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  17.02
<EXPENSE-RATIO>                                      .69
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE>                                            6
<SERIES>
   <NUMBER>                  3 
   <NAME>                    Bond 
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-START>                                 JAN-01-1997
<PERIOD-END>                                   DEC-31-1997
<INVESTMENTS-AT-COST>                                185177448
<INVESTMENTS-AT-VALUE>                               185599118
<RECEIVABLES>                                        3302397
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       188901515
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            61947
<TOTAL-LIABILITIES>                                  61947
<SENIOR-EQUITY>                                      179093
<PAID-IN-CAPITAL-COMMON>                             188176466
<SHARES-COMMON-STOCK>                                17909312
<SHARES-COMMON-PRIOR>                                3467457
<ACCUMULATED-NII-CURRENT>                            62339
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             421670
<NET-ASSETS>                                         188839568
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    3320834
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       262552
<NET-INVESTMENT-INCOME>                              3058282
<REALIZED-GAINS-CURRENT>                             349017
<APPREC-INCREASE-CURRENT>                            326623
<NET-CHANGE-FROM-OPS>                                3407299
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            3013977
<DISTRIBUTIONS-OF-GAINS>                             22394
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              15158727
<NUMBER-OF-SHARES-REDEEMED>                          143139
<SHARES-REINVESTED>                                  320654
<NET-CHANGE-IN-ASSETS>                               15336242
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                248008
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      266915
<AVERAGE-NET-ASSETS>                                 47058610
<PER-SHARE-NAV-BEGIN>                                10.33
<PER-SHARE-NII>                                      .29
<PER-SHARE-GAIN-APPREC>                              .45
<PER-SHARE-DIVIDEND>                                 (.51)
<PER-SHARE-DISTRIBUTIONS>                            (.02)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  1.54
<EXPENSE-RATIO>                                      .57
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE>                                            6
<SERIES>
   <NUMBER>              4     
   <NAME>                Money Market    
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-START>                                 JAN-01-1997
<PERIOD-END>                                   DEC-31-1997
<INVESTMENTS-AT-COST>                                41192527
<INVESTMENTS-AT-VALUE>                               41192527
<RECEIVABLES>                                        8
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       41192535
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            22383
<TOTAL-LIABILITIES>                                  22383
<SENIOR-EQUITY>                                      411702
<PAID-IN-CAPITAL-COMMON>                             40758450
<SHARES-COMMON-STOCK>                                41170152
<SHARES-COMMON-PRIOR>                                29748024
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                         41170152
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    1621455
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       146212
<NET-INVESTMENT-INCOME>                              1475243
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                                1475243
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            1475243
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              57326121
<NUMBER-OF-SHARES-REDEEMED>                          38642199
<SHARES-REINVESTED>                                  1475243
<NET-CHANGE-IN-ASSETS>                               20159165
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                134513
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      150307
<AVERAGE-NET-ASSETS>                                 29208857
<PER-SHARE-NAV-BEGIN>                                1
<PER-SHARE-NII>                                      .05
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            (.05)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  1
<EXPENSE-RATIO>                                      .51
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE>                                            6
<SERIES>
   <NUMBER>             5      
   <NAME>               Treasury 2000 Series     
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-START>                                 JAN-01-1997
<PERIOD-END>                                   DEC-31-1997
<INVESTMENTS-AT-COST>                                1502323
<INVESTMENTS-AT-VALUE>                               1701374
<RECEIVABLES>                                        0
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       1701374
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            697
<TOTAL-LIABILITIES>                                  697
<SENIOR-EQUITY>                                      1841
<PAID-IN-CAPITAL-COMMON>                             1499785
<SHARES-COMMON-STOCK>                                184138
<SHARES-COMMON-PRIOR>                                183351
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             199051
<NET-ASSETS>                                         1700677
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    114238
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       7387
<NET-INVESTMENT-INCOME>                              106851
<REALIZED-GAINS-CURRENT>                             1846
<APPREC-INCREASE-CURRENT>                            1846
<NET-CHANGE-FROM-OPS>                                108697
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              787
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                               787
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                7325
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      7387
<AVERAGE-NET-ASSETS>                                 1627962
<PER-SHARE-NAV-BEGIN>                                8.64
<PER-SHARE-NII>                                      .58
<PER-SHARE-GAIN-APPREC>                              .02
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  9.24
<EXPENSE-RATIO>                                      .45
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE>               6
<SERIES>
   <NUMBER>             6     
   <NAME>               Capital Appreciation Stock     
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-START>                                 JAN-01-1997
<PERIOD-END>                                   DEC-31-1997
<INVESTMENTS-AT-COST>                                404240162
<INVESTMENTS-AT-VALUE>                               458255162
<RECEIVABLES>                                        698677
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       458953839
<PAYABLE-FOR-SECURITIES>                             2526385
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            223219
<TOTAL-LIABILITIES>                                  2759604
<SENIOR-EQUITY>                                      242004
<PAID-IN-CAPITAL-COMMON>                             401929507
<SHARES-COMMON-STOCK>                                24200359
<SHARES-COMMON-PRIOR>                                6759264
<ACCUMULATED-NII-CURRENT>                            7611
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             54015113
<NET-ASSETS>                                         456194235
<DIVIDEND-INCOME>                                    1854993
<INTEREST-INCOME>                                    451972
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       1247731
<NET-INVESTMENT-INCOME>                              1059234
<REALIZED-GAINS-CURRENT>                             46424802
<APPREC-INCREASE-CURRENT>                            40907564
<NET-CHANGE-FROM-OPS>                                47484036
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            1065876
<DISTRIBUTIONS-OF-GAINS>                             5585172
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          17162378
<SHARES-REINVESTED>                                  93915
<NET-CHANGE-IN-ASSETS>                               372632
<ACCUMULATED-NII-PRIOR>                              17441095
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                1194672
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      1256674
<AVERAGE-NET-ASSETS>                                 151353405
<PER-SHARE-NAV-BEGIN>                                14.6
<PER-SHARE-NII>                                      .07
<PER-SHARE-GAIN-APPREC>                              4.52
<PER-SHARE-DIVIDEND>                                 (.07)
<PER-SHARE-DISTRIBUTIONS>                            (.27)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  18.85
<EXPENSE-RATIO>                                      .83
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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