SECURITY INCOME FUND /KS/
497, 1997-04-03
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<PAGE>

Security Funds


PROSPECTUS
February 5, 1997


* Security Income Fund

  - Corporate Bond Series
  - Limited Maturity Bond Series
  - U.S. Government Series
  - Global Aggressive Bond Series
  - High Yield Series

* Security Tax-Exempt Fund

* Security Cash Fund

* Application


[SDI Logo]

<PAGE>

SECURITY FUNDS
PROSPECTUS
================================================================================
                                   PROSPECTUS
                                FEBRUARY 5, 1997
   
                         AS SUPPLEMENTED APRIL 1, 1997
    

SECURITY INCOME FUND
  * CORPORATE BOND SERIES
  * LIMITED MATURITY BOND SERIES
  * U.S. GOVERNMENT SERIES
  * GLOBAL AGGRESSIVE BOND SERIES
  * HIGH YIELD SERIES
SECURITY TAX-EXEMPT FUND
SECURITY CASH FUND
MEMBERS OF THE SECURITY BENEFIT GROUP OF COMPANIES,
700 HARRISON, TOPEKA, KANSAS 66636-0001


     Security Income Fund consists of five diversified series, each of which has
its own  identified  assets,  net asset  values and  investment  objective.  The
investment  objective of the CORPORATE  BOND SERIES  ("Corporate  Bond Fund") is
conservation  of  principal  while  generating   interest  income  by  investing
primarily  in  a  diversified  portfolio  of  investment  grade  corporate  debt
securities.  The  investment  objective  of the  LIMITED  MATURITY  BOND  SERIES
("Limited Maturity Bond Fund") is to seek a high level of income consistent with
moderate price fluctuation by investing primarily in short-and intermediate-term
debt securities.  The investment  objective of the U.S. GOVERNMENT SERIES ("U.S.
Government Fund") is to provide a high level of interest income with security of
principal by investing primarily in securities which are guaranteed or issued by
the U.S. Government, its agencies or instrumentalities. The investment objective
of the GLOBAL AGGRESSIVE BOND SERIES ("Global  Aggressive Bond Fund") is to seek
high current income with capital  appreciation as a secondary  objective through
investment in a combination of foreign and domestic high-yield, lower rated debt
securities. THE FUND INVESTS PRIMARILY (AND MAY INVEST UP TO 100% OF ITS ASSETS)
IN LOWER RATED AND UNRATED  FOREIGN  DEBT  SECURITIES  WHOSE  CREDIT  QUALITY IS
GENERALLY  CONSIDERED THE EQUIVALENT OF U.S. CORPORATE DEBT SECURITIES  COMMONLY
KNOWN AS "JUNK BONDS." INVESTMENTS OF THIS TYPE ARE SUBJECT TO A GREATER RISK OF
A LOSS OF PRINCIPAL AND INTEREST,  INCLUDING THE RISK OF DEFAULT,  AND THEREFORE
SHOULD BE CONSIDERED  SPECULATIVE.  SEE "INVESTMENT METHODS AND RISK FACTORS" ON
PAGE 13.  PURCHASERS SHOULD CAREFULLY ASSESS THE RISKS ASSOCIATED WITH INVESTING
IN THE GLOBAL  AGGRESSIVE BOND FUND. The investment  objective of the HIGH YIELD
SERIES ("High Yield Fund") is to seek high current income.  Capital appreciation
is a secondary  objective.  The Fund seeks to achieve its objective by investing
primarily in a broad range of income producing  securities,  including  domestic
and foreign high-yield,  lower rated debt securities. THE FUND INVESTS PRIMARILY
(AND MAY INVEST UP TO 100% OF ITS ASSETS) IN LOWER RATED BONDS,  COMMONLY  KNOWN
AS "JUNK BONDS," THAT ENTAIL GREATER RISKS,  INCLUDING DEFAULT RISKS, THAN THOSE
FOUND IN HIGHER RATED  SECURITIES.  INVESTORS  SHOULD  CAREFULLY  CONSIDER THESE
RISKS  BEFORE  INVESTING.  SEE  "INVESTMENT  METHODS AND RISK  FACTORS" - "RISKS
ASSOCIATED WITH LOWER RATED DEBT SECURITIES" ON PAGE 21.

     The investment objective of SECURITY TAX-EXEMPT FUND ("Tax-Exempt Fund") is
to obtain as high a level of interest income exempt from federal income taxes as
is consistent with preservation of stockholders'  capital by investing primarily
in debt  securities  which are exempt from federal  income tax.  Except at times
when the Fund is invested  defensively,  at least 80 percent of its total assets
will be invested in  securities  exempt from  federal  income  taxes,  including
alternative minimum tax.

     The investment  objective of SECURITY CASH FUND ("Cash Fund") is to earn as
high a level of current income as is consistent with preservation of capital and
liquidity through investments in money market instruments with maturities of not
longer than thirteen  months.  AN INVESTMENT IN CASH FUND IS NEITHER INSURED NOR
GUARANTEED BY THE U.S.  GOVERNMENT  AND THERE CAN BE NO ASSURANCE THAT CASH FUND
WILL BE ABLE TO MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE.

     This Prospectus  sets forth  concisely the  information  that a prospective
investor  should know about the Funds. It should be read and retained for future
reference.  Certain  additional  information  is  contained  in a  Statement  of
Additional  Information about the Funds,  dated February 5, 1997, which has been
filed with the Securities and Exchange  Commission.  The Statement of Additional
Information,  as it may be  supplemented  from time to time, is  incorporated by
reference in this  Prospectus.  It is available at no charge by writing Security
Distributors,  Inc.,  700 Harrison  Street,  Topeka,  Kansas  66636-0001,  or by
calling (913) 295-3127 or (800) 888-2461.

- --------------------------------------------------------------------------------
THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES  COMMISSION,  NOR HAS THE SECURITIES
AND  EXCHANGE  COMMISSION  OR ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

AN INVESTMENT IN THE FUND INVOLVES RISK, INCLUDING LOSS OF PRINCIPAL, AND IS NOT
A DEPOSIT  OR  OBLIGATION  OF,  OR  GUARANTEED  BY ANY  BANK.  THE FUNDS ARE NOT
FEDERALLY  INSURED BY THE FEDERAL  DEPOSIT  INSURANCE  CORPORATION,  THE FEDERAL
RESERVE BOARD OR ANY OTHER AGENCY.
- --------------------------------------------------------------------------------

<PAGE>

SECURITY FUNDS
CONTENTS
================================================================================

                                                                           Page
Transaction and Operating Expense Table...................................   1
Financial Highlights......................................................   2
Investment Objective and Policies of the Funds............................   4
  Security Income Fund....................................................   4
    Corporate Bond Fund...................................................   4
    Limited Maturity Bond Fund............................................   5
    U.S. Government Fund..................................................   6
    Global Aggressive Bond Fund...........................................   7
    High Yield Fund.......................................................   9
  Security Tax-Exempt Fund................................................  11
  Security Cash Fund......................................................  12
Investment Methods and Risk Factors.......................................  13
Management of the Funds...................................................  22
  Proposed New Advisory Agreements for the Global Aggressive Bond Fund....  23
  Portfolio Management....................................................  23
How to Purchase Shares....................................................  24
  Corporate Bond, Limited Maturity Bond, U.S. Government,
    Global Aggressive Bond, High Yield and Tax-Exempt Funds...............  24
  Alternative Purchase Options............................................  25
  Class A Shares..........................................................  25
  Security Income Fund's Class A Distribution Plan........................  25
  Class B Shares..........................................................  26
  Class B Distribution Plan...............................................  27
  Calculation and Waiver of Contingent Deferred Sales Charges.............  27
  Arrangements with Broker-Dealers and Others.............................  27
  Cash Fund...............................................................  28
Purchases at Net Asset Value..............................................  29
Trading Practices and Brokerage...........................................  29
How to Redeem Shares......................................................  30
  Telephone Redemptions ..................................................  30
Dividends and Taxes.......................................................  31
  Foreign Taxes...........................................................  32
Determination of Net Asset Value..........................................  32
Performance...............................................................  33
Stockholder Services......................................................  34
  Accumulation Plan.......................................................  34
  Systematic Withdrawal Program...........................................  34
  Exchange Privilege......................................................  35
  Exchange by Telephone...................................................  35
  Retirement Plans........................................................  35
General Information.......................................................  36
  Organization............................................................  36
  Stockholder Inquiries...................................................  36
Appendix A................................................................  37
Appendix B................................................................  39
Appendix C................................................................  41
Security Cash Fund Application............................................  43

<PAGE>

SECURITY FUNDS
PROSPECTUS
================================================================================
                     TRANSACTION AND OPERATING EXPENSE TABLE
- --------------------------------------------------------------------------------

SHAREHOLDER TRANSACTION EXPENSES            CORPORATE BOND,
                                         LIMITED MATURITY BOND,
                                            U.S. GOVERNMENT,
                                        GLOBAL AGGRESSIVE BOND,
                                            HIGH YIELD AND
                                           TAX-EXEMPT FUNDS        CASH FUND
                                        ----------------------     ---------
                                        CLASS A       CLASS B(1)
Maximum Sales Load Imposed
     on Purchases (as a percentage
     of offering price)                  4.75%          None        None
Maximum Sales Load Imposed on
     Reinvested Dividends                None           None        None
Deferred Sales Load (as a percentage
     of original purchase price or 
     redemption proceeds,
     whichever is lower)                 None(2)    5% during       None
                                                 the first year,
                                                 decreasing to 0%
                                                 in the sixth and
                                                 following years

<TABLE>
<CAPTION>

                                            CORPORATE    LIMITED         U.S.       GLOBAL        HIGH
                                              BOND       MATURITY    GOVERNMENT   AGGRESSIVE      YIELD      TAX-EXEMPT
                                              FUND       BOND FUND       FUND      BOND FUND      FUND          FUND       CASH
ANNUAL FUND OPERATING EXPENSES            CLASS CLASS   CLASS CLASS  CLASS CLASS  CLASS CLASS  CLASS CLASS  CLASS CLASS    FUND
                                            A     B       A     B      A     B      A     B      A     B      A     B
                                          -------------------------------------------------------------------------------------
<S>                                        <C>   <C>    <C>   <C>    <C>   <C>    <C>   <C>    <C>   <C>    <C>   <C>      <C>
Management Fees (after fee waivers)(3)     0.50% 0.50%  0.00% 0.00%  0.00% 0.00%  0.00% 0.00%  0.00% 0.00%  0.50% 0.50%    0.50%
12b-1 Fees(4)                              0.25% 1.00%  0.25% 1.00%  0.25% 1.00%  0.25% 1.00%  0.25% 1.00%  None  1.00%    None
Other Expenses (after expense              0.27% 0.35%  0.29% 0.62%  0.47% 0.85%  1.75% 1.75%  0.71% 0.71%  0.36% 0.50%    0.50%
   reimbursements)(5)                      ----- -----  ----- -----  ----- -----  ----- -----  ----- -----  ----- -----    -----
Total Fund Operating Expenses (after fee   1.02% 1.85%  0.54% 1.62%  0.72% 1.85%  2.00% 2.75%  0.96% 1.71%  0.86% 2.00%    1.00%
   waivers and expense reimbursements)(6)  ===== =====  ===== =====  ===== =====  ===== =====  ===== =====  ===== =====    =====

EXAMPLE
   You would pay the following   1 Year      $57   $69    $53   $66    $55   $69    $67   $78    $57   $67    $56   $70     $10
   expenses on a $1,000          3 Years      78    88     64    81     69    88    107   115     77    84     74    93      32
   investment, assuming          5 Years     101   120     76   108     86   120                               93   128      55
   (1) 5 percent annual         10 Years     166   217    112   192    133   217                              149   233     122
   return and (2) redemption
   at the end of each time period

EXAMPLE
   You would pay the following   1 Year      $57   $19    $53   $16    $55   $19    $67   $28    $57   $17    $56   $20     $10
   expenses on a $1,000          3 Years      78    58     64    51     69    58    107    85     77    54     74    63      32
   investment, assuming          5 Years     101   100     76    88     86   100                               93   108      55
   (1) 5 percent annual         10 Years     166   217    112   192    133   217                              149   233     122
   return and (2) no
   redemption
</TABLE>

(1)  Class B shares convert tax-free to Class A shares automatically after eight
     years.

(2)  Purchases  of Class A  shares  in  amounts  of  $1,000,000  or more are not
     subject to an initial  sales load;  however,  a contingent  deferred  sales
     charge of 1% is  imposed  in the  event of  redemption  within  one year of
     purchase. See "Class A Shares" on page 25.

(3)  During the fiscal year ended  December 31,  1995,  the  Investment  Manager
     waived certain of the Management  Fees of the Limited  Maturity Bond,  U.S.
     Government,  and Global  Aggressive  Bond Funds and, during the fiscal year
     ending December 31, 1996 will waive the investment advisory fees of Limited
     Maturity  Bond,  Global  Aggressive  Bond,  U.S.  Government and High Yield
     Funds;  absent  such fee  waivers,  "Management  Fees"  would  have been as
     follows:  .5% for each of the  Limited  Maturity  Bond and U.S.  Government
     Funds, .6% for the High Yield Fund and .75% for the Global  Aggressive Bond
     Fund.

(4)  Long-term holders of shares that are subject to an asset-based sales charge
     may pay more than the  equivalent  of the maximum  front-end  sales  charge
     otherwise permitted by NASD Rules.

(5)  The amount of "Other  Expenses"  of Global  Aggressive  Bond and High Yield
     Funds is based on estimated amounts for the fiscal year ending December 31,
     1996.  During the fiscal  year ended  December  31,  1995,  the  Investment
     Manager  reimbursed  certain expenses of the following  Funds;  absent such
     reimbursement,  "Other Expenses" would have been as follows: .29% for Class
     A shares and .69% for Class B shares of Corporate Bond Fund; .47% for Class
     A shares of Limited  Maturity Bond Fund;  1.82% for Class A shares and 2.2%
     for Class B shares  of U.S.  Government  Fund;  2.58% for Class B shares of
     Global  Aggressive Bond Fund;  .95% for Class B shares of Tax-Exempt  Fund;
     and .54% for shares of Cash Fund.

(6)  During the fiscal year ended  December 31,  1995,  the  Investment  Manager
     waived  and/or  reimbursed  certain  expenses of the Funds and,  during the
     fiscal year ending  December  31, 1996 will waive the  investment  advisory
     fees of Limited Maturity Bond, U.S. Government,  Global Aggressive Bond and
     High Yield  Funds;  absent  such  reimbursement  and  waiver,  "Total  Fund
     Operating  Expenses"  would have been as follows:  1.04% for Class A shares
     and  2.19% for Class B shares of  Corporate  Bond  Fund;  1.22% for Class A
     shares and 2.12% for Class B shares of Limited  Maturity  Bond Fund;  2.82%
     for Class A shares  and 3.70% for Class B shares of U.S.  Government  Fund;
     4.33% for Class B shares of Global  Aggressive Bond Fund; 1.56% for Class A
     shares and 2.30% for Class B shares of High Yield  Fund;  2.45% for Class B
     shares of Tax-Exempt Fund; and 1.04% for shares of Cash Fund.

THE ABOVE EXAMPLES SHOULD NOT BE CONSIDERED A  REPRESENTATION  OF PAST OR FUTURE
EXPENSES  AS ACTUAL  EXPENSES  MAY BE GREATER OR LESSER  THAN THOSE  SHOWN.  THE
ASSUMED FIVE PERCENT ANNUAL RETURN IS HYPOTHETICAL  AND SHOULD NOT BE CONSIDERED
A  REPRESENTATION  OF PAST OR FUTURE  ANNUAL  RETURN.  THE ACTUAL  RETURN MAY BE
GREATER OR LESSER THAN THE ASSUMED AMOUNT.

   The  purpose  of the  foregoing  fee  table  is to  assist  the  investor  in
understanding the various costs and expenses that an investor in Corporate Bond,
Limited  Maturity Bond, U.S.  Government,  Global  Aggressive  Bond, High Yield,
Tax-Exempt or Cash Funds will bear directly or  indirectly.  For a more detailed
discussion of the Funds' fees and expenses, see the discussion under "Management
of the Funds," page 22. Information on the Funds' 12b-1 Plans may be found under
the headings  "Security Income Fund's Class A Distribution  Plan" on page 25 and
"Class B Distribution  Plan" on page 26. See "How to Purchase  Shares," page 24,
for more  information  concerning  the sales load.  Also,  see  Appendix C for a
discussion  of "Rights of  Accumulation"  and  "Statement of  Intention,"  which
options  may serve to reduce the  front-end  sales load on  purchase  of Class A
Shares.

- --------------------------------------------------------------------------------
                                       1
<PAGE>

SECURITY FUNDS
FINANCIAL HIGHLIGHTS
================================================================================

   The following financial  highlights for each of the years in the period ended
December 31, 1995, have been audited by Ernst & Young LLP. Such  information for
each of the five years in the period ended December 31, 1995,  should be read in
conjunction with the financial statements of the Funds and the report of Ernst &
Young LLP, the Funds' independent  auditors,  appearing in the December 31, 1995
Annual Report which is incorporated by reference in this Prospectus.  The Funds'
Annual Report also contains additional  information about the performance of the
Funds and may be obtained without charge by calling Security Distributors,  Inc.
at  1-800-888-2461.  The  information  for  each of the  periods  preceding  and
including  the year ended  December  31,  1990,  is not covered by the report of
Ernst & Young LLP.

<TABLE>
<CAPTION>
                            Net
                           gains                                                                       Ratio
          Net             (losses)          Divi-                                                        of      Ratio
         asset            on sec-   Total   dends                                               Net   expenses   of net
         value            urities    from   (from    Distri-                   Net             assets    to      income    Port-
         begin-    Net    (real-    invest-  net     butions  Return          asset            end of   aver-      to      folio
Fiscal   ning    invest-  ized &     ment   invest-   (from     of    Total   value    Total   period    age     average   turn-
 year     of      ment    unreal-   opera-   ment    capital  capi-  distri-  end of  return   (thou-    net       net     over
 end     period  income    ized)    tions   income)   gains)   tal   butions  period    (a)    sands)   assets   assets    rate
- ------------------------------------------------------------------------------------------------------------------------------------

                                     CORPORATE BOND FUND (CLASS A)

<S>     <C>    <C>      <C>      <C>      <C>      <C>       <C>   <C>       <C>     <C>       <C>       <C>     <C>      <C>
1986     $8.40   $.82     $.05     $.87    $(.95)    $---    $---   $(.95)    $8.32   11.0%     $49,025  1.04%   10.09%    77%
1987      8.32    .79     (.48)     .31     (.85)     ---     ---    (.85)     7.78    4.0%      44,093  1.00%    9.73%   127%
1988      7.78    .77     (.292)    .478    (.778)    ---     ---    (.778)    7.48    6.5%      52,296  1.02%   10.04%    83%
1989      7.48    .74     (.031)    .709    (.739)    ---     ---    (.739)    7.45    9.9%      56,184  1.04%    9.83%    57%
1990      7.45    .69     (.232)    .458    (.688)    ---     ---    (.688)    7.22    6.6%      65,962  1.10%    9.42%    87%
1991      7.22    .65      .458    1.108    (.648)    ---     ---    (.648)    7.68   16.1%      85,824  1.03%    8.75%    32%
1992      7.68    .61      .044     .654    (.614)    ---     ---    (.614)    7.72    9.0%     104,492  1.01%    7.97%    61%
1993      7.72    .52      .521    1.041    (.527)   (.424)   ---    (.951)    7.81   13.4%     118,433  1.02%    6.46%   157%
1994      7.81    .49    (1.127)   (.637)   (.493)    ---     ---    (.493)    6.68   (8.3%)     90,593  1.01%    6.91%   204%
1995(d)(h)6.68    .47     0.708    1.178    (.468)    ---     ---    (.468)    7.39   18.2%      93,701  1.02%    6.62%   200%

                                     CORPORATE BOND FUND (CLASS B)

1993(b)  $8.59   $.11    $(.324)  $(.214)  $(.112)  $(.424)  $---   $(.536)   $7.84   (2.5%)     $1,022  1.88%*   5.16%*  164%
1994(c)   7.84    .43    (1.129)   (.699)   (.431)    ---     ---    (.431)    6.71   (9.0%)      3,878  1.85%    6.08%   204%
1995      6.71    .40      .725    1.125    (.405)    ---     ---    (.405)    7.43   17.3%       5,743  1.85%    5.80%   200%
(c)(d)(h)

                                  LIMITED MATURITY BOND FUND (CLASS A)

1995    $10.00   $.62     $.652   $1.272   $(.612)   $---    $---   $(.612)  $10.66   13.0%      $3,322  0.84%*   5.97%*    4%*
(c)(d)(e)

                                  LIMITED MATURITY BOND FUND (CLASS B)

1995    $10.00   $.53     $.664   $1.194   $(.524)   $---    $---   $(.524)  $10.67   12.2%        $752  1.71%*   5.12%*    4%*
(c)(d)(e)

                                     U.S. GOVERNMENT FUND (CLASS A)

1986(c)  $5.32   $.47     $---     $.47    $(.50)    $---    $---   $(.50)    $5.29    9.1%      $2,716  1.00%    9.23%    48%
1987(c)   5.29    .45     (.265)    .185    (.475)    ---     ---    (.475)    5.00    3.7%       4,467  1.00%    8.78%   166%
1988(c)   5.00    .48     (.18)     .30     (.49)     ---     ---    (.49)     4.81    6.2%       4,229  1.00%    9.83%   107%
1989(c)   4.81    .46      .078     .538    (.458)    ---     ---    (.458)    4.89   11.8%       4,551  1.11%    9.46%    52%
1990(c)   4.89    .42      .032     .452    (.412)    ---     ---    (.412)    4.93    9.8%       6,017  1.11%    8.60%    22%
1991(c)   4.93    .40      .248     .648    (.404)    ---    (.004)  (.408)    5.17   13.8%       7,319  1.11%    7.94%    41%
1992(c)   5.17    .37     (.126)    .244    (.366)    ---    (.008)  (.374)    5.04    5.0%       9,364  1.11%    7.22%   157%
1993(c)   5.04    .31      .273     .583    (.310)   (.344)   ---    (.654)    4.97   10.9%      10,098  1.10%    5.90%   153%
1994(c)   4.97    .30     (.621)   (.321)   (.299)    ---     ---    (.299)    4.35   (6.5%)      8,309  1.10%    6.47%   220%
1995      4.35    .30      .620     .920    (.30)     ---     ---    (.30)     4.97   21.9%      10,080  1.11%    6.41%    81%
(c)(d)(h)

                                     U.S. GOVERNMENT FUND (CLASS B)

1993     $5.51   $.04    $(.193)  $(.153)   $(.043) $(.344)  $---   $(.387)   $4.97   (1.4%)       $140  1.61%*   5.54%*  114%
(b)(c)
1994(c)   4.97    .26     (.624)   (.364)    (.256)   ---     ---    (.256)    4.35   (7.4%)        321  1.85%    5.76%   220%
1995      4.35    .26      .625     .885     (.265)   ---     ---    (.265)    4.97   20.9%         582  1.87%    5.69%    81%
(c)(d)(h)

                                 GLOBAL AGGRESSIVE BOND FUND (CLASS A)

1995    $10.00   $.63     $.09     $.72    $(.55)   $(.02)   $---   $(.57)   $10.15    7.3%      $2,968  2.00%*  11.04%*  127%*
(c)(d)(f)

                                 GLOBAL AGGRESSIVE BOND FUND (CLASS B)

1995    $10.00   $.56     $.12     $.68    $(.49)   $(.02)   $---   $(.51)   $10.17    6.9%      $1,440  2.75%*  10.24%*  127%*
(c)(d)(f)

                                       TAX-EXEMPT FUND (CLASS A)

1986(c)  $9.47   $.85     $.55    $1.40    $(.87)    $---    $---   $(.87)   $10.00   15.6%      $8,901  1.00%    8.83%    35%
1987(c)  10.00    .82      .78     1.60     (.82)    (.02)    ---    (.84)    10.76   15.5%      16,297  1.00%    7.79%    23%
1988(c)  10.76    .76     (.656)    .104    (.774)   (.12)    ---    (.894)    9.97    1.3%      17,814  1.00%    7.60%    83%
1989      9.97    .73     (.257)    .473    (.723)    ---     ---    (.723)    9.72    4.9%      19,898   .98%    7.47%    33%
1989(g)   9.72    .61     (.106)    .504    (.624)    ---     ---    (.624)    9.60    4.1%      20,426   .97%*   6.97%*   75%*
1990      9.60    .64     (.072)    .568    (.638)    ---     ---    (.638)    9.53    6.2%      20,566   .96%    6.75%    74%
1991      9.53    .63      .446    1.076    (.636)    ---     ---    (.636)    9.97   11.7%      23,218   .89%    6.55%    38%
1992      9.97    .61      .092     .702    (.612)    ---     ---    (.612)   10.06    7.3%      28,608   .84%    6.07%    91%
1993     10.06    .51      .702    1.212    (.514)   (.388)   ---    (.902)   10.37   11.6%      32,115   .82%    4.92%   118%
1994     10.37    .47    (1.317)   (.847)   (.473)    ---     ---    (.473)    9.05   (8.3%)     24,092   .82%    4.74%    88%
1995      9.05    .48      .891    1.371    (.481)    ---     ---    (.481)    9.94   15.5%      25,026   .86%    5.02%   103%
(c)(d)(h)

</TABLE>
                             See accompanying notes.

- --------------------------------------------------------------------------------
                                       2
<PAGE>

SECURITY FUNDS
FINANCIAL HIGHLIGHTS (CONTINUED)
================================================================================

<TABLE>
<CAPTION>
                            Net
                           gains                                                                       Ratio
          Net             (losses)          Divi-                                                        of      Ratio
         asset            on sec-   Total   dends                                               Net   expenses   of net
         value            urities    from   (from    Distri-                   Net             assets    to      income    Port-
         begin-    Net    (real-    invest-  net     butions  Return          asset            end of   aver-      to      folio
Fiscal   ning    invest-  ized &     ment   invest-   (from     of    Total   value    Total   period    age     average   turn-
 year     of      ment    unreal-   opera-   ment    capital  capi-  distri-  end of  return   (thou-    net       net     over
 end     period  income    ized)    tions   income)   gains)   tal   butions  period    (a)    sands)   assets   assets    rate
- ------------------------------------------------------------------------------------------------------------------------------------

                                       TAX-EXEMPT FUND (CLASS B)

<S>     <C>    <C>      <C>      <C>      <C>      <C>       <C>   <C>       <C>     <C>       <C>       <C>     <C>      <C>
1993(b) $10.88   $.10    $(.128)  $(.02)   $(.094)  $(.38)   $---   $(.48)   $10.37    (.2%)       $106  2.89%*   2.71%*   90%
1994(c)  10.37    .35    (1.321)   (.971)   (.349)    ---     ---    (.349)    9.05   (9.5%)        760  2.00%    3.50%    88%
1995      9.05    .37      .902    1.272    (.372)    ---     ---    (.372)    9.95   14.3%       1,190  2.00%    3.90%   103%
(c)(d)(h)

                                               CASH FUND

1986(c)  $1.00   $.073    $---     $.073   $(.073)   $---    $---   $(.073)   $1.00    7.5%     $47,292  1.00%    7.26%   ---
1987(c)   1.00    .057     ---      .057    (.057)    ---     ---    (.057)    1.00    5.8%      37,773  1.00%    5.68%   ---
1988(c)   1.00    .061     ---      .061    (.061)    ---     ---    (.061)    1.00    6.3%      43,038  1.00%    6.10%   ---
1989(c)   1.00    .070     ---      .070    (.070)    ---     ---    (.070)    1.00    7.3%      46,625  1.00%    7.09%   ---
1989(c)(g)1.00    .069     ---      .069    (.069)    ---     ---    (.069)    1.00    7.1%      54,388  1.00%*   8.26%*  ---
1990(c)   1.00    .073     ---      .073    (.073)    ---     ---    (.073)    1.00    7.6%      65,018  1.00%    7.31%   ---
1991      1.00    .051     ---      .051    (.051)    ---     ---    (.051)    1.00    5.2%      48,843   .96%    5.21%   ---
1992(c)   1.00    .028     ---      .028    (.028)    ---     ---    (.028)    1.00    2.8%      56,694  1.00%    2.75%   ---
1993(c)   1.00    .023     ---      .023    (.023)    ---     ---    (.023)    1.00    2.4%      71,870  1.00%    2.28%   ---
1994      1.00    .033     ---      .033    (.033)    ---     ---    (.033)    1.00    3.4%      58,102   .96%    3.24%   ---
1995(c)(d)1.00    .049     ---      .049    (.049)    ---     ---    (.049)    1.00    5.0%      38,158  1.00%    5.00%   ---
</TABLE>

(a)  Total  return  information  does not reflect  deduction of any sales charge
     imposed at the time of purchase for Class A shares or upon  redemption  for
     Class B shares.

(b)  Class "B" shares were  initially  offered on October 19,  1993.  Percentage
     amounts for the period, except total return, have been annualized.

(c)  Fund expenses were reduced by the Investment Manager during the period, and
     expense ratios absent such reimbursement would have been as follows:

<TABLE>
<CAPTION>
                                      1986      1987      1988    1989        1990     1991      1992      1993     1994     1995
    <S>                    <C>        <C>       <C>       <C>     <C>         <C>      <C>       <C>       <C>      <C>      <C>
    Corporate Bond         Class A     N/A       N/A      N/A      N/A        N/A       N/A       N/A      N/A       N/A      N/A
                           Class B     N/A       N/A      N/A      N/A        N/A       N/A       N/A      N/A      2.00%    2.19%
    U.S. Government        Class A    1.60%     1.80%     1.31%   1.37%       1.34%    1.24%     1.20%     1.20%    1.20%    1.22%
                           Class B     N/A       N/A      N/A      N/A        N/A       N/A       N/A      1.75%    2.91%    3.70%
    Limited Maturity Bond  Class A     N/A       N/A      N/A      N/A        N/A       N/A       N/A      N/A       N/A     1.04%
                           Class B     N/A       N/A      N/A      N/A        N/A       N/A       N/A      N/A       N/A     2.12%
    Global Aggressive Bond Class A     N/A       N/A      N/A      N/A        N/A       N/A       N/A      N/A       N/A     2.42%
                           Class B     N/A       N/A      N/A      N/A        N/A       N/A       N/A      N/A       N/A     3.93%
    Tax-Exempt             Class A    1.62%     1.16%     1.03%    N/A        N/A       N/A       N/A      N/A       N/A     0.86%
                           Class B     N/A       N/A      N/A      N/A        N/A       N/A       N/A      N/A      2.32%    2.45%
    Cash                              1.17%     1.07%     1.04%   1.13%**     1.01%     N/A      1.03%     1.03%     N/A     1.04%
                                                                  1.03%***
</TABLE>

(d) Net  investment  income was  computed  using the  average  month-end  shares
    outstanding throughout the period.

(e) Security Limited Maturity Bond Fund was initially capitalized on January 17,
    1995,  with a net asset value of $10 per share.  Percentage  amounts for the
    period have been annualized, except for total return.

(f) Security Global  Aggressive  Bond Fund was initially  capitalized on June 1,
    1995,  with a net asset value of $10 per share.  Percentage  amounts for the
    period have been annualized, except for total return.

(g) Effective  December 31, 1989,  the fiscal year ends of  Tax-Exempt  and Cash
    Funds  were  changed  from  January 31 and  February  28,  respectively,  to
    December  31. The  information  presented  in the table above for the fiscal
    year ended  December 31 represents 11 months of  performance  for Tax-Exempt
    Fund and 10 months of  performance  for Cash  Fund.  The data for years 1985
    through 1989, are for the fiscal year ended January 31 for  Tax-Exempt  Fund
    and for the fiscal year ended February 28 for Cash Fund.

(h) Expense  ratios were  calculated  without the reduction  for custodian  fees
    earnings  credits.  Expense ratios with such  reductions  would have been as
    follows:

                                                1995
        Corporate Bond            Class A      1.02%
                                  Class B      1.85%
        U.S. Government           Class A      1.10%
                                  Class B      1.85%
        Limited Maturity Bond     Class A      0.81%
                                  Class B      1.65%
        Tax-Exempt                Class A      0.85%
                                  Class B      2.00%

  *Percentage amounts for the period, except total return, have been annualized.

 **This information  represents the expense ratio absent  reimbursements for the
   period February 1, 1989 through December 31, 1989.

***This information  represents the expense ratio absent  reimbursements for the
   fiscal year ended February 28, 1989.

- --------------------------------------------------------------------------------
                                       3
<PAGE>

SECURITY FUNDS
PROSPECTUS
================================================================================

INVESTMENT OBJECTIVES AND POLICIES OF THE FUNDS

     Security  Income,  Tax-Exempt  and  Cash  Funds  are  diversified  open-end
management investment companies,  which were organized as Kansas corporations on
September 9, 1970, July 14, 1981, and March 21, 1980, respectively.  Each of the
Corporate Bond Fund,  Limited Maturity Bond Fund, U.S.  Government Fund,  Global
Aggressive  Bond Fund and High Yield Fund,  series of Security  Income Fund, and
Security Tax-Exempt Fund and Cash Fund  (collectively,  "the Funds") has its own
investment  objective and policies which are described below.  There, of course,
can be no assurance  that such  investment  objectives  will be achieved.  While
there is no present intention to do so, the investment objective and policies of
each Fund may be  changed by the Board of  Directors  of the Funds  without  the
approval of stockholders.  However,  stockholders  will be given 30 days written
notice  of any  such  change.  If a  change  in  investment  objective  is made,
stockholders should consider whether the Fund remains an appropriate  investment
in light of their then current financial position and needs.

     Each of the Funds is also subject to certain investment policy limitations,
which may not be changed without stockholder approval.  Among these limitations,
some of the more  important  ones are that each Fund will not invest more than 5
percent  of the  value  of its  assets  in any one  issuer  other  than the U.S.
Government or its  instrumentalities  (for each of Cash,  Global Aggressive Bond
and High Yield Funds, this limitation applies only with respect to 75 percent of
the value of its total assets), purchase more than 10 percent of the outstanding
voting  securities  of any one  issuer or invest 25 percent or more of its total
assets in any one industry.  The full text of the investment policy  limitations
of each Fund is set forth in the Funds' Statement of Additional Information.

     Each of the Funds may borrow  money from banks as a  temporary  measure for
emergency purposes or to facilitate redemption requests. See "Investment Methods
and  Risk  Factors"  for  a  discussion  of  borrowing.  Pending  investment  in
securities  or to meet  potential  redemptions,  each of the Funds may invest in
certificates of deposit,  bank demand accounts,  repurchase  agreements and high
quality money market instruments.

SECURITY INCOME FUND

     Security Income Fund ("Income Fund") consists of five  diversified  series,
each of  which  represents  a  different  investment  objective  and has its own
identified assets and net asset values. The investment  objective of each series
is described below.

CORPORATE BOND FUND

     The  investment  objective  of Corporate  Bond Fund is to preserve  capital
while generating interest income. In pursuing its investment objective, the Fund
will invest in a broad range of debt securities, including (i) securities issued
by U.S. and Canadian  corporations;  (ii) securities issued or guaranteed by the
U.S. Government or any of its agencies or instrumentalities,  including Treasury
bills, certificates of indebtedness, notes and bonds; (iii) securities issued or
guaranteed  by the  Dominion of Canada or  provinces  thereof;  (iv)  securities
issued by foreign governments, their agencies and instrumentalities, and foreign
corporations, provided that such securities are denominated in U.S. dollars; (v)
higher  yielding,  high  risk debt  securities  (commonly  referred  to as "junk
bonds");  (vi) certificates of deposit issued by a U.S. branch of a foreign bank
("Yankee CDs"); and (vii) investment grade mortgage backed securities  ("MBSs").
Under normal circumstances,  at least 65 percent of the Fund's total assets will
be invested in corporate  debt  securities  which at the time of issuance have a
maturity greater than one year.

     Corporate  Bond Fund will invest  primarily  in corporate  debt  securities
rated Baa or higher by Moody's  Investors  Service,  Inc.  ("Moody's") or BBB or
higher by Standard & Poor's Corporation  ("S&P") at the time of purchase,  or if
unrated,  of equivalent  quality as determined by the  Investment  Manager.  See
Appendix A to this  Prospectus  for a  description  of corporate  bond  ratings.
Included in such  securities  may be  convertible  bonds or bonds with  warrants
attached  which  are rated at least  Baa or BBB at the time of  purchase,  or if
unrated,  of  equivalent  quality as  determined by the  Investment  Manager.  A
"convertible  bond"  is a  bond,  debenture  or  preferred  share  which  may be
exchanged by the owner for common stock or another security, usually of the same
company, in accordance with the terms of the issue. A "warrant" confers upon its
holder the right to purchase an amount of  securities  at a particular  time and
price.  Securities  rated  Baa  by  Moody's  or  BBB  by  S&P  have  speculative
characteristics.  See "Investment  Methods and Risk Factors" for a discussion of
the risks associated with such securities.

     Corporate Bond Fund may invest up to 25 percent of its net assets in higher
yielding  debt  securities in the lower rating  (higher risk)  categories of the
recognized  rating  services  (commonly  referred  to  as  "junk  bonds").  Such
securities include securities rated Ba or lower by Moody's or BB or lower by S&P
and are regarded as predominantly

- --------------------------------------------------------------------------------
No  dealer,  salesperson,  or  other  person  has  been  authorized  to give any
information or to make any  representations,  other than those contained in this
Prospectus and in the Statement of Additional Information in connection with the
offer  contained  in  this  Prospectus,  and,  if  given  or  made,  such  other
information or representations must not be relied upon as having been authorized
by the Funds, the Investment Manager, or the Distributor.
- --------------------------------------------------------------------------------
                                       4
<PAGE>

SECURITY FUNDS
PROSPECTUS
================================================================================

speculative  with  respect to the  ability of the issuer to meet  principal  and
interest  payments.  The Fund will not invest in junk  bonds  which are rated in
default at the time of purchase. See "Investment Methods and Risk Factors" for a
discussion of the risks associated with investing in such securities.

     The Fund may purchase  securities  which are  obligations of, or guaranteed
by, the Dominion of Canada or provinces  thereof and debt  securities  issued by
Canadian  corporations.  Canadian securities will not be purchased if subject to
the foreign interest equalization tax and unless payable in U.S. dollars.

     The Fund may invest in Yankee CDs which are  certificates of deposit issued
by a U.S. branch of a foreign bank  denominated in U.S.  dollars and held in the
U.S. Yankee CDs are subject to somewhat different risks than are the obligations
of domestic banks. The Fund also may invest in debt securities issued by foreign
governments,  their  agencies and  instrumentalities  and foreign  corporations,
provided  that such  securities  are  denominated  in U.S.  dollars.  The Fund's
investment in foreign securities, including Canadian securities, will not exceed
25 percent of the Fund's net assets.  See "Investment  Methods and Risk Factors"
for a discussion of the risks associated with investing in foreign securities.

     The Fund may invest in investment grade mortgage backed securities  (MBSs),
including  mortgage   pass-through   securities  and   collateralized   mortgage
obligations  (CMOs).  The Fund may  invest up to 10 percent of its net assets in
securities known as "inverse floating  obligations,"  "residual interest bonds,"
or  "interest-only"  (IO) or  "principal-only"  (PO) bonds, the market values of
which  generally  will be more volatile than the market values of most MBSs. The
Fund will hold less than 25 percent of its net assets in MBSs.  For a discussion
of MBSs and the risks associated with such securities,  see "Investment  Methods
and Risk Factors."

     Corporate Bond Fund may purchase  securities on a "when-issued" or "delayed
delivery"  basis in  excess of  customary  settlement  periods  for the types of
security involved. For a discussion of such securities,  see "Investment Methods
and Risk Factors." It is anticipated  that  securities  invested in by this Fund
will be held by the Fund on an  average  from one and a half to three  years and
that the average weighted  maturity of the Fund's portfolio will range from 5 to
15 years under normal circumstances.

LIMITED MATURITY BOND FUND

     The  investment  objective of the Limited  Maturity  Bond Fund is to seek a
high level of income  consistent  with moderate  price  fluctuation by investing
primarily in short- and intermediate-term bonds. As used herein the term "short-
and  intermediate-term  bonds"  is used to  describe  any debt  security  with a
maturity of 15 years or less.  In pursuing its  investment  objective,  the Fund
will invest in a broad range of debt securities, including (i) securities issued
by U.S. and Canadian  corporations;  (ii) securities issued or guaranteed by the
U.S. Government or any of its agencies or instrumentalities,  including Treasury
bills, certificates of indebtedness, notes and bonds; (iii) securities issued or
guaranteed  by, the Dominion of Canada or  provinces  thereof;  (iv)  securities
issued by foreign governments, their agencies and instrumentalities, and foreign
corporations, provided that such securities are denominated in U.S. dollars; (v)
higher  yielding,  high  risk debt  securities  (commonly  referred  to as "junk
bonds");  (vi) certificates of deposit issued by a U.S. branch of a foreign bank
("Yankee CDs"); (vii) investment grade mortgage backed securities ("MBSs");  and
(viii)  investment grade  asset-backed  securities.  High yield debt securities,
Yankee CDs, MBSs and  asset-backed  securities  are described in further  detail
under  "Investment  Methods and Risk Factors." Under normal  circumstances,  the
Fund will invest at least 65 percent of the value of its total  assets in short-
and intermediate-term  bonds. It is anticipated that the dollar weighted average
maturity  of the Fund's  portfolio  will  range from 2 to 10 years.  It will not
exceed 10 years.

     Limited  Maturity Bond Fund will invest  primarily in debt securities rated
Baa or higher by Moody's or BBB or higher by S&P at the time of purchase,  or if
unrated,  of equivalent  quality as determined by the  Investment  Manager.  See
Appendix A to this  Prospectus  for a  description  of corporate  bond  ratings.
Included in such  securities  may be  convertible  bonds or bonds with  warrants
attached  which  are rated at least  Baa or BBB at the time of  purchase,  or if
unrated,  of  equivalent  quality as  determined by the  Investment  Manager.  A
"convertible  bond"  is a  bond,  debenture  or  preferred  share  which  may be
exchanged,  by the owner, for common stock or another  security,  usually of the
same company,  in accordance  with the terms of the issue.  A "warrant"  confers
upon its holder the right to purchase an amount of  securities  at a  particular
time and price.  Securities  rated Baa by Moody's or BBB by S&P have speculative
characteristics as described under "Investment  Methods and Risk  Factors"--"Baa
or BBB Securities."

     The Fund may invest in higher  yielding debt securities in the lower rating
(higher risk) categories of the recognized rating services (commonly referred to
as "junk  bonds");  however,  the Fund will not hold more than 25 percent of its
net assets in junk bonds. This includes  securities rated Ba or lower by Moody's
or BB or lower  by S&P,  and  such  securities  are  regarded  as  predominantly
speculative  with  respect to the  ability of the issuer to meet  principal  and
interest  payments.  The Fund will not invest in junk  bonds  which are rated in
default at the time of purchase. See "Investment Methods and Risk Factors" for a
discussion of the risks associated with investing in such securities.

   For the period January 17, 1995 (date of inception) to December 31, 1995, the
dollar  weighted  average of Limited

- --------------------------------------------------------------------------------
                                       5
<PAGE>

SECURITY FUNDS
PROSPECTUS
================================================================================

Maturity Bond Fund's  holdings  (excluding  equities)  had the following  credit
quality characteristics.

                                                      PERCENT OF
INVESTMENT                                            NET ASSETS
U.S. Government and
   Government Agency Securities.......................    29.0%
Cash and other Assets, Less Liabilities...............     7.4%
Rated Fixed Income Securities
   AA.................................................     7.9%
   A..................................................    43.1%
   Baa/BBB............................................     8.5%
   Ba/BB..............................................     4.1%
   B..................................................       0%
   Caa/CCC............................................       0%
                                                            ---
                                                           100%

The  foregoing  table is intended  solely to provide  disclosure  about  Limited
Maturity Bond Fund's asset  composition for the period January 17, 1995 (date of
inception) to December 31, 1995. The asset composition after this may or may not
be approximately the same as shown above.

     The Fund may purchase  securities  which are  obligations of, or guaranteed
by, the Dominion of Canada or provinces  thereof and debt  securities  issued by
Canadian  corporations.  Canadian securities will not be purchased if subject to
the foreign interest equalization tax and unless payable in U.S.
currency.

     The Fund may invest in Yankee CDs which are  certificates of deposit issued
by a U.S. branch of a foreign bank  denominated in U.S.  dollars and held in the
United States.  Yankee CDs are subject to somewhat  different risks than are the
obligations  of  domestic  banks.  The Fund may also  invest in debt  securities
issued by foreign governments, their agencies and instrumentalities, and foreign
corporations, provided that such securities are denominated in U.S. dollars. The
Fund's investment in foreign securities, including Canadian securities, will not
exceed 25  percent  of the  Fund's net  assets.  For a  discussion  of the risks
associated with foreign securities, see "Investment Methods and Risk Factors."

     The  Fund  may  invest  in  U.S.  Government  securities.  U.S.  Government
securities include bills,  certificates of indebtedness,  notes and bonds issued
by the Treasury or by agencies or instrumentalities of the U.S. Government.  For
a discussion of the varying levels of guarantee associated with particular types
of U.S.  Government  Securities,  see  "Investment  Methods and Risk Factors" --
"U.S. Government Securities."

     Limited  Maturity  Bond  Fund  may  acquire  certain  securities  that  are
restricted as to disposition  under the federal  securities laws,  provided that
such  securities  are eligible for resale to qualified  institutional  investors
pursuant  to Rule 144A  under the  Securities  Act of 1933,  and  subject to the
Fund's  policy  that not more than 15 percent  of the Fund's net assets  will be
invested in illiquid  assets.  See  "Investment  Methods and Risk Factors" for a
discussion of Rule 144A Securities.

     The Fund may invest in investment grade mortgage backed securities  (MBSs),
including  mortgage   pass-through   securities  and   collateralized   mortgage
obligations  (CMOs).  The Fund may  invest up to 10 percent of its net assets in
securities known as "inverse floating  obligations,"  "residual interest bonds,"
and "interest-only" (IO) and  "principal-only"  (PO) bonds, the market values of
which will  generally be more volatile than the market values of most MBSs.  The
Fund will hold less than 25 percent of its net  assets in MBSs,  including  CMOs
and mortgage  pass-through  securities.  For a discussion  of MBSs and the risks
associated with such securities, see "Investment Methods and Risk Factors."

     The Fund may also invest in  investment  grade  "asset-backed  securities."
These include secured debt instruments  backed by automobile loans,  credit card
loans, home equity loans,  manufactured housing loans and other types of secured
loans  providing  the  source  of  both  principal  and  interest.  Asset-backed
securities are subject to risks similar to those discussed with respect to MBSs.
See "Investment Methods and Risk Factors."

     Limited  Maturity Bond Fund may purchase  securities on a "when-issued"  or
"delayed delivery" basis in excess of customary  settlement periods for the type
of security involved. See "Investment Methods and Risk Factors."

     From time to time, Limited Maturity Bond Fund may invest part or all of its
assets in commercial notes or money market instruments.

U.S. GOVERNMENT FUND

     The investment  objective of the U.S.  Government Fund is to provide a high
level of interest  income with  security of principal by investing  primarily in
U.S.  Government   securities.   U.S.   Government   securities  include  bills,
certificates  of  indebtedness,  notes and bonds  issued by the  Treasury  or by
agencies   or   instrumentalities   of  the  U.S.   Government.   Under   normal
circumstances,  the Fund  will  invest at least 80  percent  of the value of its
total assets in U.S.  Government  securities.  For a  discussion  of the varying
levels  of  guarantee  associated  with  particular  types  of  U.S.  Government
Securities,  see  "Investment  Methods and Risk  Practices"  --"U.S.  Government
Securities."

     From time to time the  portfolio  of the U.S.  Government  Fund may consist
primarily of Government National Mortgage Association ("GNMA") certificates,  or
"Ginnie Maes," which are mortgage-backed  securities representing part ownership
of a pool of mortgage loans on which timely payment of interest and principal is
guaranteed  by GNMA  and  backed  by the  full  faith  and  credit  of the  U.S.
Government.  These loans, issued by lenders such as mortgage bankers, commercial
banks and  savings  and loan

- --------------------------------------------------------------------------------
                                       6
<PAGE>

SECURITY FUNDS
PROSPECTUS
================================================================================

associations,  are  either  insured by the  Federal  Housing  Administration  or
guaranteed by the Veterans' Administration.  A "pool" or group of such mortgages
is assembled and, after being approved by GNMA, is offered to investors  through
securities  dealers.  Once approved by GNMA,  the timely payment of interest and
principal on each  mortgage is  guaranteed  by GNMA and backed by the full faith
and credit of the U.S. Government.  Ginnie Mae certificates differ from bonds in
that  principal is paid back  monthly by the borrower  over the term of the loan
rather than  returned in a lump sum at  maturity.  Ginnie Mae  certificates  are
called "pass through"  securities  because both interest and principal  payments
(including  prepayments)  are passed  through to the holder of the  certificate.
Upon receipt,  principal payments generally will be used to purchase  additional
Ginnie Mae certificates or other U.S. Government  securities.  Although the Fund
invests in  securities  guaranteed  by GNMA and  backed by the U.S.  Government,
neither the value of the Fund's  portfolio  nor the value or yield of its shares
is so guaranteed. The Fund may, for defensive purposes,  temporarily invest part
or all of its  assets  in  money  market  instruments,  including  deposits  and
bankers'  acceptances  in  depository  institutions  insured  by the  FDIC,  and
short-term  U.S.  Government  and  agency  securities.  If  the  deposits  in  a
depository  institution are not fully insured by the FDIC, the Fund will analyze
the credit quality of the issuing  institution  prior to making any such deposit
and will retain a record of that analysis.

     The potential for appreciation in GNMAs,  which might otherwise be expected
to occur as a result of a decline in interest  rates,  may be limited or negated
by increased principal prepayments of the underlying  mortgages.  Prepayments of
GNMA  certificates  occur with increasing  frequency when mortgage rates decline
because,  among  other  reasons,  mortgagors  may be  able  to  refinance  their
outstanding   mortgages  at  lower  interest  rates  or  prepay  their  existing
mortgages.  Such  prepayments  would then be reinvested by the Fund at the lower
current interest rates.

     While mortgages  underlying GNMA  certificates have a stated maturity of up
to 30  years,  it has been the  experience  of the  mortgage  industry  that the
average life of comparable  mortgages,  owing to prepayments,  refinancings  and
payments from foreclosures, is considerably less. Yield tables utilize a 12 year
average  life  assumption  for GNMA  pools of 26-30  year  mortgages,  and GNMAs
continue to be traded based on this  assumption.  Recently it has been  observed
that mortgage pools issued at high interest rates have  experienced  accelerated
prepayment  rates as interest  rates  declined,  which would result in a shorter
average life than 12 years.

     The Fund may invest in other mortgage backed securities (MBSs) as discussed
under  "Investment  Methods and Risk Factors" -- "Mortgage Backed Securities and
Collateralized  Mortgage Obligations." MBSs include certain securities issued by
the United States government or one of its agencies or  instrumentalities,  such
as GNMAs, and securities issued by private issuers. The Fund may not invest more
than 20  percent  of the value of its total  assets  in MBSs  issued by  private
issuers.

     The Fund will  attempt to maximize  the return on its  portfolio  by taking
advantage of market developments and yield disparities, which may include use of
the following strategies:

   1.  Shortening  the average  maturity of its portfolio in  anticipation  of a
       rise in interest rates so as to minimize depreciation of principal;

   2.  Lengthening  the average  maturity of its portfolio in  anticipation of a
       decline in interest rates so as to maximize appreciation of principal;

   3.  Selling one type of U.S.  Government  obligation  and buying another when
       disparities arise in the relative values of each; and

   4.  Changing from one U.S.  Government  obligation to an essentially  similar
       U.S. Government obligation when their respective yields are distorted due
       to market factors.

     These strategies may result in increases or decreases in the Fund's current
income  available for distribution to Fund  stockholders,  and the Fund may hold
obligations  which sell at moderate to  substantial  premiums or discounts  from
face value. It is anticipated  that securities  invested in by this Fund will be
held by the Fund on the average from one to three years.

GLOBAL AGGRESSIVE BOND FUND

     The  Global  Aggressive  Bond Fund seeks to provide  high  current  income.
Capital appreciation is a secondary objective. As used herein the term "bond" is
used to describe any type of debt security.  Under normal circumstances the Fund
will invest at least 65 percent of its total assets in bonds as defined  herein.
The Fund under normal  circumstances seeks its investment objective of providing
a high level of current income by investing substantially all of its assets in a
portfolio of debt securities of issuers in three separate  investment areas: (i)
the United States; (ii) developed foreign countries; and (iii) emerging markets.
The Fund may also  invest up to 50 percent  of its assets in certain  derivative
instruments.  See "Investment  Methods and Risk Factors" for a discussion of the
risks  associated  with  investing in derivative  instruments.  The Fund selects
particular  debt  securities in each sector based on their  relative  investment
merits.  Within each area, the Fund selects debt securities from those issued by
governments,  their agencies and  instrumentalities;  central banks;  commercial
banks and other corporate entities. Debt securities in which the Fund may invest
consist of bonds, notes, debentures and other similar instruments.  The Fund may
invest up to 100 percent of its total assets in U.S. and

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                                       7
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SECURITY FUNDS
PROSPECTUS
================================================================================

foreign debt securities and other fixed income  securities  that, at the time of
purchase,  are rated below  investment  grade ("high yield  securities" or "junk
bonds"), which involve a high degree of risk and are predominantly  speculative.
The Fund may also  invest in  securities  that are in  default  as to payment of
principal and/or interest. A description of debt ratings is included as Appendix
A to this Prospectus. See "Investment Methods and Risk Factors" for a discussion
of the risks associated with investing in junk bonds.  Many emerging market debt
securities  are not rated by United States  rating  agencies such as Moody's and
S&P.  The Fund's  ability  to achieve  its  investment  objectives  is thus more
dependent on the  manager's  credit  analysis than would be the case if the Fund
were to invest in higher quality bonds. INVESTORS SHOULD PURCHASE SHARES ONLY AS
A SUPPLEMENT TO AN OVERALL  INVESTMENT  PROGRAM AND ONLY IF WILLING TO UNDERTAKE
THE RISKS INVOLVED.

     For the period June 1, 1995 (date of inception)  to December 31, 1995,  the
dollar weighted  average of Global  Aggressive  Bond Fund's holdings  (excluding
equities) had the following credit quality characteristics.

                                                      PERCENT OF
INVESTMENT                                            NET ASSETS
U.S. Government and
   Government Agency Securities.......................       0%
Cash and other Assets, Less Liabilities...............     2.4%
Rated Fixed Income Securities
   AAA................................................     5.1%
   AA.................................................     7.9%
   A..................................................    14.8%
   Baa/BBB............................................    21.7%
   Ba/BB..............................................    17.9%
   B..................................................    13.8%
   Caa/CCC............................................       0%
Unrated Securities Comparable in Quality to
   A..................................................     6.4%
   Baa/BBB............................................     2.2%
   Ba/BB..............................................       0%
   B..................................................     7.8%
   Caa/CCC............................................       0%
                                                            ---
                                                           100%

The  foregoing  table is  intended  solely to provide  disclosure  about  Global
Aggressive  Bond Fund's asset  composition  for the period June 1, 1995 (date of
inception) to December 31, 1995. The asset composition after this may or may not
be approximately the same as shown above.

     EMERGING  MARKETS.   "Emerging  markets"  will  consist  of  all  countries
determined  by the  World  Bank or the  United  Nations  to have  developing  or
emerging  economies  and markets.  Currently,  investing in many of the emerging
countries and emerging  markets is not feasible or may involve  political risks.
Accordingly,  Lexington  Management  Corporation,  the Sub-Adviser to the Global
Aggressive  Bond  Fund  (the  "Sub-Adviser"),   currently  intends  to  consider
investments only in those countries in which it believes  investing is feasible.
The list of acceptable  countries  will be reviewed by the  Sub-Adviser  and MFR
Advisers,  Inc.  ("MFR") and  approved by the Board of  Directors  on a periodic
basis and any  additions or deletions  with respect to such list will be made in
accordance  with changing  economic and political  circumstances  involving such
countries.  An issuer in an  emerging  market  is an  entity:  (i) for which the
principal  securities  trading market is an emerging  market,  as defined above;
(ii) that (alone or on a  consolidated  basis) derives 50 percent or more of its
total revenue from either goods  produced,  sales made or services  performed in
emerging  markets;  or (iii)  organized  under the laws of, and with a principal
office in, an emerging market.

     The Fund's investments in emerging market securities consist  substantially
of high yield,  lower-rated  debt  securities  of foreign  corporations,  "Brady
Bonds"  and  other   sovereign  debt   securities   issued  by  emerging  market
governments.  The Fund may invest in debt  securities of emerging market issuers
without  regard to  ratings.  Currently,  the  substantial  majority of emerging
market debt securities are considered to have a credit quality below  investment
grade. The Fund may invest in bank loan  participations  and assignments,  which
are fixed and floating rate loans arranged through private  negotiations between
foreign  entities.  The Fund may also invest up to 5 percent of its total assets
in zero coupon  securities.  See the  discussion of sovereign  debt  securities,
Brady Bonds,  loan  participations  and assignments  and zero coupon  securities
under "Investment Methods and Risk Factors."

     TEMPORARY  INVESTMENTS.  The Fund  intends  to retain  the  flexibility  to
respond promptly to changes in market and economic conditions.  Accordingly,  in
the interest of preserving  shareholders' capital and consistent with the Fund's
investment objectives,  the Sub-Adviser and MFR may employ a temporary defensive
investment strategy if they determine such a strategy to be warranted.  Pursuant
to such a defensive strategy,  the Fund temporarily may hold cash (U.S. dollars,
foreign  currencies  or  multinational  currency  units) and/or invest up to 100
percent  of  its  assets  in  high  quality  debt  securities  or  money  market
instruments  of  U.S.  or  foreign  issuers,  and  most  or all  of  the  Fund's
investments  may be made in the United States and  denominated in U.S.  dollars.
For debt  obligations  other than  commercial  paper,  this includes  securities
rated,  at the time of  purchase,  at least  AA by S&P or Aa by  Moody's,  or if
unrated,  determined to be of comparable  quality by the Sub-Adviser or MFR. For
commercial  paper, this includes  securities rated, at the time of purchase,  at
least A-2 by S&P or Prime-2  by  Moody's,  or if  unrated,  determined  to be of
comparable  quality  by the  Sub-Adviser  or MFR.  It is  impossible  to predict
whether, when or for how long the Fund will employ defensive strategies.  To the
extent the Fund adopts a temporary

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                                       8
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SECURITY FUNDS
PROSPECTUS
================================================================================

defensive  investment posture, it will not be invested so as to achieve directly
its investment objectives. In addition,  pending investment of proceeds from new
sales of Fund shares or to meet ordinary daily cash needs,  the Fund temporarily
may hold cash (U.S. dollars, foreign currencies or multinational currency units)
and may invest any  portion of its assets in high  quality  foreign or  domestic
money  market  instruments.  The Fund may from time to time  invest in shares of
other  investment  companies as  discussed  under  "Investment  Methods and Risk
Factors," below.

     INVESTMENT TECHNIQUE.  The Fund invests in debt obligations allocated among
diverse markets and denominated in various  currencies,  including U.S. dollars,
or in multinational currency units such as European Currency Units. The Fund may
purchase  securities that are issued by the government or a company or financial
institution of one country but  denominated  in the currency of another  country
(or a multinational  currency unit). The Fund is designed for investors who wish
to accept the risks entailed in such investments, which are different from those
associated with a portfolio  consisting  entirely of securities of U.S.  issuers
denominated in U.S.  dollars.  See  "Investment  Methods and Risk Factors" for a
discussion  of the risks  associated  with  securities  denominated  in  foreign
currencies.

     The  Sub-Adviser  and MFR will seek to  allocate  the assets of the Fund in
securities  of issuers in  countries  and in  currency  denominations  where the
combination of fixed income market returns, the price appreciation  potential of
fixed  income  securities  and currency  exchange  rate  movements  will present
opportunities  primarily  for high current  income and  secondarily  for capital
appreciation. In so doing, the Sub-Adviser and MFR intend to take full advantage
of the different yield, risk and return  characteristics  that investment in the
fixed income  markets of  different  countries  can provide for U.S.  investors.
Fundamental  economic  strength,  credit  quality and currency and interest rate
trends  will be the  principal  determinants  of the  emphasis  given to various
country, geographic and industry sectors within the Fund. Securities held by the
Fund may be invested in without  limitation as to maturity.  The Sub-Adviser and
MFR evaluate  currencies on the basis of fundamental  economic  criteria  (e.g.,
relative  inflation and interest rate levels and trends,  growth rate forecasts,
balance of payments  status and  economic  policies)  as well as  technical  and
political  data. If the currency in which a security is denominated  appreciates
against  the U.S.  dollar,  the  dollar  value of the  security  will  increase.
Conversely,  if the exchange rate of the foreign currency  declines,  the dollar
value of the security will decrease. The Fund may seek to protect itself against
such negative  currency  movements  through the use of sophisticated  investment
techniques  although the Fund is not committed to using such  techniques and may
be fully exposed to changes in currency exchange rates. See "Investment  Methods
and Risk Factors" for a discussion of such techniques.

     The Fund may purchase  securities on a "when-issued" basis and may purchase
or sell  securities  on a "forward  commitment"  basis in order to hedge against
anticipated  changes  in  interest  rates  and  prices.  See the  discussion  of
when-issued and forward commitment securities under "Investment Methods and Risk
Factors."  The Fund may enter into  repurchase  agreements,  reverse  repurchase
agreements and "dollar rolls" which are discussed under "Investment  Methods and
Risk Factors."

HIGH YIELD FUND

     The  investment  objective  of the High Yield Fund is to seek high  current
income.   Capital   appreciation   is  a  secondary   objective.   Under  normal
circumstances,  the  Fund  will  seek  its  investment  objective  by  investing
primarily in a broad range of income producing securities,  including (i) higher
yielding,  higher risk, debt securities  (commonly referred to as "junk bonds");
(ii) preferred stock;  (iii)  securities  issued by foreign  governments,  their
agencies and  instrumentalities,  and foreign  corporations,  provided that such
securities are  denominated in U.S.  dollars;  (iv)  mortgage-backed  securities
("MBSs"); (v) asset-backed  securities;  (vi) securities issued or guaranteed by
the U.S.  Government  or any of its  agencies  or  instrumentalities,  including
Treasury bills, certificates of indebtedness,  notes and bonds; (vii) securities
issued or guaranteed by, the Dominion of Canada or provinces thereof; and (viii)
zero coupon securities.  The Fund may also invest up to 35 percent of its assets
in common stocks  (which may include  ADRs),  warrants and rights.  Under normal
circumstances,  at least 65 percent of the Fund's  total assets will be invested
in high-yielding, high risk debt securities.

     High  Yield  Fund  may  invest  up to 100  percent  of its  assets  in debt
securities  that,  at the time of  purchase,  are rated below  investment  grade
("high yield  securities" or "junk bonds"),  which involve a high degree of risk
and are predominantly  speculative. A description of debt ratings is included as
Appendix A to this Prospectus.  See "Investment  Methods and Risk Factors" for a
discussion of the risks associated with investing in junk bonds. Included in the
debt securities which the High Yield Fund may purchase are convertible bonds, or
bonds with warrants  attached.  A "convertible  bond" is a bond,  debenture,  or
preferred  share which may be exchanged by the owner for common stock or another
security,  usually  of the same  company,  in  accordance  with the terms of the
issue.  A "warrant"  confers  upon the holder the right to purchase an amount of
securities  at a particular  time and price.  See  "Investment  Methods and Risk
Factors" for a discussion of the risks associated with such securities.

   For the period August 5, 1996 (date of  inception) to December 31, 1996,  the
dollar weighted average of High

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                                       9
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SECURITY FUNDS
PROSPECTUS
================================================================================

Yield Fund's  holdings  (excluding  equities) had the following  credit  quality
characteristics.

                                                      PERCENT OF
INVESTMENT                                            NET ASSETS
U.S. Government Securities............................       0%
Cash and other Assets, Less Liabilities...............    11.4%
Rated Fixed Income Securities
   Ba/BB..............................................    38.2%
   B..................................................    49.4%
   D..................................................     1.0%
                                                          -----
                                                         100.0%

The foregoing  table is intended solely to provide  disclosure  about High Yield
Fund's asset  composition  for the period  August 5, 1996 (date of inception) to
December  31,  1996.  The  asset  composition  after  this  may  or  may  not be
approximately the same as shown above.

     The Fund may purchase  securities  which are  obligations of, or guaranteed
by, the Dominion of Canada or provinces  thereof and debt  securities  issued by
Canadian  corporations.  Canadian securities will not be purchased if subject to
the foreign interest  equalization tax and unless payable in U.S.  dollars.  The
Fund may also invest in debt securities issued by foreign governments (including
Brady Bonds),  their  agencies and  instrumentalities  and foreign  corporations
(including those in emerging markets),  provided such securities are denominated
in U.S. dollars. The Fund's investment in foreign securities, excluding Canadian
securities, will not exceed 25 percent of the Fund's net assets. See "Investment
Method and Risk Factors" for a discussion of the risks associated with investing
in foreign securities, Brady Bonds and emerging markets.

     The Fund may invest in MBSs, including mortgage pass-through securities and
collateralized  mortgage  obligations (CMO's). The Fund may invest in securities
known as "inverse floating obligations," "residual interest bonds," or "interest
only" (IO) or "principal  only" (PO) bonds, the market values of which generally
will be more volatile  that the market  values of most MBSs.  This is due to the
fact that such  instruments  are more  sensitive to interest rate changes and to
the rate of principal  prepayments  than are most other MBSs. The Fund will hold
less than 25 percent of its net assets in MBSs. For a discussion of MBSs and the
risks  associated  with  such  securities,  see  "Investment  Methods  and  Risk
Factors."

     The Fund may also invest in asset-backed securities.  These include secured
debt  instruments  backed by automobile  loans,  credit card loans,  home equity
loans, manufactured housing loans and other types of secured loans providing the
source of both  principal and interest  payments.  Asset-backed  securities  are
subject  to  risks  similar  to  those  discussed  with  respect  to  MBSs.  See
"Investment Methods and Risk Factors."

     The  Fund  may  invest  in  U.S.  Government  securities.  U.S.  Government
securities include bills,  certificates of indebtedness,  notes and bonds issued
by the Treasury or by agencies or instrumentalities of the U.S. Government.  For
a discussion of the varying levels of guarantee associated with particular types
of U.S. Government Securities, see "Investment Methods and Risk Factors" - "U.S.
Government Securities."

     The Fund may invest in zero  coupon  securities  which are debt  securities
that pay no cash income but are sold at  substantial  discounts  from their face
value.  Certain  zero coupon  securities  also provide for the  commencement  of
regular interest  payments at a deferred date. See "Investment  Methods and Risk
Factors" for a discussion of zero coupon securities.

     The High Yield Fund may acquire  certain  securities that are restricted as
to disposition under federal securities laws,  including securities eligible for
resale to  qualified  institutional  investors  pursuant  to Rule 144A under the
Securities  Act of 1933,  subject  to the  Fund's  policy  that not more than 10
percent of the Fund's  net assets  will be  invested  in  illiquid  assets.  See
"Investment Methods and Risk Factors" for a discussion of restricted securities.

     The High Yield Fund may purchase  securities  on "when  issued" or "delayed
delivery"  basis in  excess  of  customary  settlement  periods  for the type of
security  involved.  The Fund may also purchase or sell securities on a "forward
commitment"  basis  and  may  enter  into  "repurchase   agreements,"   "reverse
repurchase  agreements" and "roll transactions." The Fund may lend securities to
broker-dealers,  other  institutions or other persons to earn additional income.
The value of loaned securities may not exceed 33 1/3 percent of the Fund's total
assets. In addition,  the Fund may purchase loans, loan participations and other
types of direct  indebtedness.  See "Investment  Methods and Risk Factors" for a
discussion of the risks associated with these investment practices.

     The Fund may  enter  into  futures  contracts  (a type of  derivative)  (or
options thereon) to hedge all or a portion of its portfolio,  as a hedge against
changes in  prevailing  levels of  interest  rates or as an  efficient  means of
adjusting  its  exposure  to the  bond  market.  The Fund  will not use  futures
contracts  for  leveraging  purposes.  The Fund will  limit  its use of  futures
contracts so that initial margin deposits or premiums on such contracts used for
non-hedging  purposes  will not equal more than 5 percent of the Funds net asset
value.  The Fund may  purchase  call and put options and write such options on a
"covered"  basis. The Fund may also enter into interest rate and index swaps and
purchase or sell related caps, floors and collars. The aggregate market value of
the Fund's portfolio  securities covering call or put options will not exceed 25
percent of the Fund's net assets.  See the  discussion of "Options,  Futures and
Forward  Currency

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                                       10
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SECURITY FUNDS
PROSPECTUS
================================================================================

Transactions," and "Swaps,  Caps, Floors and Collars" under "Investment  Methods
and Risk Factors."

     From time to time, the High Yield Fund may invest part or all of its assets
in U.S. Government securities,  commercial notes or money market instruments. It
is anticipated that the dollar weighted average maturity of the Fund's portfolio
will range from 5 to 15 years under normal circumstances.

SECURITY TAX-EXEMPT FUND

     The investment objective of Tax-Exempt Fund is to obtain as high a level of
interest  income  exempt  from  federal  income  taxes  as  is  consistent  with
preservation of stockholders'  capital.  Tax-Exempt Fund attempts to achieve its
objective by investing  primarily in debt  securities,  the interest on which is
exempt from federal income taxes,  including the alternative  minimum tax. Under
normal  circumstances,  at least 80 percent  of the  Fund's  net assets  will be
invested in such tax-exempt securities.

     The securities in which the Fund invests include debt obligations issued by
or on behalf of the states,  territories  and  possessions of the United States,
the  District  of  Columbia,   and  their  political   subdivisions,   agencies,
authorities and instrumentalities, including multi-state agencies or authorities
(and may include certain private activity bonds the interest on which is subject
to the alternative  minimum tax). These securities are referred to as "municipal
securities"  and are  described  in  more  detail  in the  Funds'  Statement  of
Additional Information.

     The Fund's investments in municipal securities are limited to securities of
"investment  grade" quality,  that is,  securities rated within the four highest
rating  categories of Moody's (Aaa, Aa, A, Baa) or S&P (AAA, AA, A, BBB), except
that the Fund may purchase unrated municipal securities (i) where the securities
are  guaranteed as to principal and interest by the full faith and credit of the
U.S. Government or are short-term  municipal securities (those having a maturity
of less than one year) of issuers having  outstanding at the time of purchase an
issue of municipal bonds having one of the four highest ratings,  or (ii) where,
in the opinion of the Investment Manager,  the unrated municipal  securities are
comparable  in  quality  to those  within  the four  highest  ratings.  However,
Tax-Exempt  Fund will not purchase an unrated  municipal  security (other than a
security  described in (i) above) if, after such purchase,  more than 20 percent
of the  Fund's  total  assets  would  be  invested  in  such  unrated  municipal
securities.

     With respect to rated securities,  there is no percentage limitation on the
amount of the Fund's  assets  which may be  invested  in  securities  within any
particular rating  classification,  but the Fund anticipates that it will invest
no more than 25 percent of its total assets in  securities  rated Baa by Moody's
or BBB by  Standard & Poor's.  A  description  of the  ratings is  contained  in
Appendix B to this Prospectus.  Such securities have speculative characteristics
as discussed under "Investment Methods and Risk Factors."

     If the Fund holds a  security  whose  rating  drops  below Baa or BBB,  the
Investment  Manager will reevaluate the credit risk presented by the security in
light of current market conditions and determine whether to retain or dispose of
such security.  The Fund will not retain securities rated below Baa or BBB in an
amount that exceeds 5 percent of its net assets.

     Tax-Exempt  Fund  invests  primarily  in  municipal  bonds with  maturities
greater than one year. It is expected that the Fund's average portfolio maturity
under normal circumstances will be in the 15- to 25-year range.  Tax-Exempt Fund
also will invest for various  purposes in short-term  (maturity equal to or less
than one year)  securities  which, to the extent  practicable will be short-term
municipal securities.  Short-term investments may be made, pending investment of
funds in municipal  bonds,  in order to maintain  liquidity,  to meet redemption
requests,  or to maintain a temporary  "defensive"  investment position when, in
the opinion of the  Investment  Manager,  it is advisable to do so on account of
current or anticipated market conditions.  Except when in a temporary  defensive
position,  investments in short-term  municipal  securities  will represent less
than 20 percent of the Fund's total assets.

     From time to time,  on a  temporary  basis,  Tax-Exempt  Fund may invest in
fixed income obligations on which the interest is subject to federal income tax.
Except when the Fund is in a temporary "defensive"  investment position, it will
not  purchase a taxable  security  if, as a result,  more than 20 percent of its
total  assets  would be invested in taxable  securities.  This  limitation  is a
fundamental policy of Tax-Exempt Fund, and may not be changed without a majority
vote of the Fund's outstanding shares. Temporary taxable investments of the Fund
may consist of  obligations  issued or guaranteed by the U.S.  Government or its
agencies or  instrumentalities,  commercial paper rated A-1 by S&P or Prime-1 by
Moody's,  corporate  obligations rated AAA or AA by S&P or Aaa or Aa by Moody's,
certificates  of deposit or bankers'  acceptances  of domestic  banks or thrifts
with at least $2 billion in assets, or repurchase  agreements with such banks or
with broker-dealers.

     Tax-exempt interest on private activity bonds and exempt-interest dividends
attributable  to private  activity bonds generally are treated as tax preference
items for purposes of the alternative minimum tax. The Fund may purchase private
activity bonds, such as industrial  development  bonds, when other bonds are not
available and when the yield  differential  between  private  activity bonds and
other municipal bonds justifies their purchase.

     From time to time,  Tax-Exempt Fund may purchase municipal  securities on a
when-issued or delayed  delivery  basis.  The Fund does not believe that its net
asset value or income will be  adversely  affected by its  purchase of

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                                       11
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SECURITY FUNDS
PROSPECTUS
================================================================================

municipal  securities on a when-issued or delayed  delivery  basis.  For further
information  regarding when-issued  purchases,  see "Investment Methods and Risk
Factors" and the Funds' Statement of Additional Information.

     Tax-Exempt Fund may also purchase from banks or  broker/dealers,  municipal
securities  together with the right to resell the securities to the seller at an
agreed-upon  price or yield within a specified period prior to the maturity date
of the  securities.  Such a right to resell is commonly  known as a "put" and is
also referred to as a "stand-by commitment" on the part of the seller. The price
which  Tax-Exempt Fund pays for the municipal  securities with puts generally is
higher than the price which otherwise would be paid for the municipal securities
alone. The Fund uses puts for liquidity purposes in order to permit it to remain
more fully invested in municipal  securities than would otherwise be the case by
providing a ready market for certain municipal securities in its portfolio at an
acceptable  price.  The put generally is for a shorter term than the maturity of
the  municipal  security and does not restrict in any way the Fund's  ability to
dispose of (or  retain)  the  municipal  security.  In order to ensure  that the
interest on municipal  securities  subject to puts is tax-exempt to the Fund, it
will limit its use of puts in accordance with current interpretations or rulings
of the  Internal  Revenue  Service.  Because it is  difficult  to  evaluate  the
likelihood  of  exercise  or the  potential  benefit  of a  put,  puts  will  be
determined  to have a "value"  of zero,  regardless  of  whether  any  direct or
indirect  consideration was paid. There is a risk that the seller of the put may
not be able to  repurchase  the security  upon exercise of the put by Tax-Exempt
Fund. For further information regarding puts and stand-by  commitments,  see the
Funds' Statement of Additional Information.

SECURITY CASH FUND

     The investment objective of Cash Fund is to seek as high a level of current
income as is consistent with  preservation  of capital and liquidity.  Cash Fund
will  attempt to achieve its  objective  by investing at least 95 percent of its
total assets, measured at the time of investment,  in a diversified portfolio of
highest  quality  money  market  instruments.  Cash Fund may also invest up to 5
percent of its total assets, measured at the time of investment, in money market
instruments that are in the  second-highest  rating category for short-term debt
obligations.  Money market  instruments  in which the Fund may invest consist of
the following:

     U.S.  Government  Securities --  Obligations  issued or  guaranteed  (as to
principal or interest) by the United States  Government or its agencies (such as
the Small Business  Administration and Government National Mortgage Association)
or  instrumentalities  (such as Federal  Home Loan Banks and Federal Land Banks)
and instruments fully collateralized with such obligations.

     Bank  Obligations -- Obligations of banks or savings and loan  associations
that are members of the Federal  Deposit  Insurance  Corporation and instruments
fully collateralized with such obligations.

     Corporate  Obligations -- Commercial paper issued by corporations and rated
Prime-1 or Prime-2 by  Moody's  or A-1 or A-2 by S&P,  or other  corporate  debt
instruments  rated Aaa or Aa or better by Moody's or AAA or AA or better by S&P,
subject to the  limitations on investment in  instruments in the  second-highest
rating category, discussed below.

     Cash  Fund  may  invest  only  in  U.S.  dollar  denominated  money  market
instruments  that present minimal credit risk and, with respect to 95 percent of
its total assets,  measured at the time of  investment,  that are of the highest
quality.  The  Investment  Manager will  determine  whether a security  presents
minimal credit risk under procedures  adopted by Cash Fund's Board of Directors.
A security will be considered to be highest  quality (1) if rated in the highest
category,  (e.g., Aaa or Prime-1 by Moody's or AAA or A-1 by S&P) by (i) any two
nationally  recognized  statistical rating organizations  ("NRSROs") or, (ii) if
rated by only one NRSRO,  by that NRSRO,  and whose  acquisition  is approved or
ratified  by the  Board  of  Directors;  (2) if  issued  by an  issuer  that has
short-term debt obligations of comparable maturity,  priority,  and security and
that are rated in the highest rating  category by (i) any two NRSROs or, (ii) if
rated by only one NRSRO,  by that NRSRO,  and whose  acquisition  is approved or
ratified  by the  Board of  Directors;  or (3) an  unrated  security  that is of
comparable quality to a security in the highest rating category as determined by
the  Investment  Manager  and whose  acquisition  is approved or ratified by the
Board of Directors.  With respect to 5 percent of its total assets,  measured at
the time of  investment,  Cash Fund may also invest in money market  instruments
that are in the  second-highest  rating category for short-term debt obligations
(e.g.,  rated Aa or Prime 2 by  Moody's  or AA or A-2 by  S&P).  A money  market
instrument will be considered to be in the second-highest  rating category under
the criteria  described  above with respect to  investments  considered  highest
quality,  as applied to instruments in the second-highest  rating category.  See
Appendix  A to this  Prospectus  for a  description  of the  principal  types of
securities  and  instruments  in  which  Cash  Fund  will  invest  as  well as a
description of the above mentioned ratings.

     Cash Fund may not invest more than 5 percent of its total assets,  measured
at the time of  investment,  in the securities of any one issuer that are of the
highest  quality or more than the  greater  of 1 percent of its total  assets or
$1,000,000,  measured at the time of investment, in securities of any one issuer
that are in the  second-highest  rating category,  except that these limitations
shall not apply to U.S. Government securities. The Fund may exceed the 5 percent
limitation for up to three business days after the purchase of the securities of
any one  issuer  that are of the

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highest  quality,  provided that the Fund has  outstanding  at any time not more
than one such investment.  In the event that an instrument acquired by Cash Fund
ceases  to be of the  quality  that is  eligible  for the Fund,  the Fund  shall
promptly  dispose of the  instrument  in an orderly  manner  unless the Board of
Directors determines that this would not be in the best interests of the Fund.

     Cash Fund will invest in money  market  instruments  of varying  maturities
(but no longer  than  thirteen  months)  in an effort to earn as high a level of
current income as is consistent with preservation of capital and liquidity. Cash
Fund intends to maintain a dollar-weighted  average maturity in its portfolio of
not more than 90 days.  The Fund seeks to  maintain a stable net asset  value of
$1.00 per share,  although  there can be no assurance that it will be able to do
so.

     Cash Fund may acquire one or more of the types of  securities  listed above
subject to  repurchase  agreement.  Not more than 10 percent of the Fund's total
assets may be invested in illiquid assets,  which include repurchase  agreements
with maturities of over seven days.  Cash Fund may invest in instruments  having
rates of interest that are adjusted periodically according to a specified market
rate for such investments ("Variable Rate Instruments").  The interest rate on a
Variable  Rate  Instrument  is  ordinarily  determined  by reference to, or is a
percentage  of, an objective  standard such as a bank's prime rate or the 91-day
U.S. Treasury Bill rate. Generally, the changes in the interest rate on Variable
Rate Instruments  reduce the fluctuation in the market value of such securities.
Accordingly,  as interest rates decrease or increase,  the potential for capital
appreciation or depreciation is less than for fixed-rate obligations.  Cash Fund
determines  the maturity of Variable Rate  Instruments  in accordance  with Rule
2a-7 under the Investment  Company Act of 1940 which allows the Fund to consider
the maturity date of such  instruments to be the period remaining until the next
readjustment  of the interest  rate rather than the maturity date on the face of
the instrument.

     Cash  Fund  may  acquire  certain  securities  that  are  restricted  as to
disposition under the federal securities laws, provided that such securities are
eligible for resale to qualified  institutional  investors pursuant to Rule 144A
under the Securities Act of 1933, and subject to the Fund's policy that not more
than 10 percent of the Fund's total assets will be invested in illiquid  assets.
See  "Investment  Methods  and  Risk  Factors"  for a  discussion  of Rule  144A
Securities.

INVESTMENT METHODS AND RISK FACTORS

     Some of the risk factors  related to certain  securities,  instruments  and
techniques  that may be used by one or more of the  Funds are  described  in the
"Investment  Objective  and  Policies"  section  of this  Prospectus  and in the
"Investment   Objectives  and  Policies"  and  "Investment  Policy  Limitations"
sections of the Funds' Statement of Additional  Information.  The following is a
description of certain  additional risk factors  related to various  securities,
instruments  and  techniques.  The risks so described  only apply to those Funds
which may invest in such securities and instruments or use such techniques. Also
included  is a  general  description  of  some  of the  investment  instruments,
techniques  and  methods  which  may be used by one or  more of the  Funds.  The
methods described only apply to those Funds which may use such methods.

INVESTMENT VEHICLES

     BAA OR BBB  SECURITIES  -- Certain of the Funds may invest in medium  grade
debt securities  (debt securities rated Baa by Moody's or BBB by S&P at the time
of  purchase,  or if  unrated,  of  equivalent  quality  as  determined  by  the
Investment  Manager).  Baa  securities  are  considered  to  be  "medium  grade"
obligations  by  Moody's  and BBB is the  lowest  classification  which is still
considered an  "investment  grade" rating by S&P.  Bonds rated Baa by Moody's or
BBB by S&P have  speculative  characteristics  and may be more  susceptible than
higher grade bonds to adverse economic conditions or other adverse circumstances
which may result in a weakened capacity to make principal and interest payments.
Corporate Bond,  Limited  Maturity Bond,  Global  Aggressive Bond and High Yield
Funds may invest in higher yield debt  securities  in the lower  rating  (higher
risk)  categories of the recognized  rating  services  (commonly  referred to as
"junk bonds").  See Appendix A to this Prospectus for a complete  description of
corporate  bond  ratings  and  see  "Risks   Associated  with  Lower-Rated  Debt
Securities (Junk Bonds)."

     U.S.  GOVERNMENT  SECURITIES  --  Each  of the  Funds  may  invest  in U.S.
Government  securities  which include  obligations  issued or guaranteed  (as to
principal and interest) by the United States Government or its agencies (such as
the Small  Business  Administration,  the Federal  Housing  Administration,  and
Government National Mortgage Association), or instrumentalities (such as Federal
Home Loan Banks and Federal Land Banks),  and instruments  fully  collateralized
with such  obligations  such as  repurchase  agreements.  Some  U.S.  Government
securities,  such as Treasury  bills and bonds,  are supported by the full faith
and credit of the U.S. Treasury; others are supported by the right of the issuer
to borrow  from the  Treasury;  others,  such as those of the  Federal  National
Mortgage Association,  are supported by the discretionary  authority of the U.S.
Government to purchase the agency's obligations;  still others, such as those of
the Student Loan Marketing Association,  are supported only by the credit of the
instrumentality.  Government  National Mortgage  Association (GNMA) certificates
are mortgage-backed securities representing part ownership of a pool of mortgage
loans on which timely  payment of interest and  principal is  guaranteed

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

by the full faith and credit of the U.S.  Government.  Although U.S.  Government
securities   are   guaranteed   by  the  U.S.   Government,   its   agencies  or
instrumentalities, shares of the Funds are not so guaranteed in any way.

     SHARES OF OTHER INVESTMENT COMPANIES -- The Global Aggressive Bond Fund may
invest in shares of other investment companies. A Fund's investment in shares of
other investment  companies may not exceed immediately after purchase 10 percent
of the Fund's total assets and no more than 5 percent of its total assets may be
invested in the shares of any one investment  company.  Investment in the shares
of other  investment  companies has the effect of requiring  shareholders to pay
the operating expenses of two mutual funds.

     CONVERTIBLE  SECURITIES  AND WARRANTS -- Certain of the Funds may invest in
debt or preferred equity securities  convertible into or exchangeable for equity
securities.  Traditionally,   convertible  securities  have  paid  dividends  or
interest  at rates  higher  than  common  stocks but lower than  non-convertible
securities.  They generally  participate in the  appreciation or depreciation of
the underlying stock into which they are convertible, but to a lesser degree. In
recent years,  convertibles  have been  developed  which combine higher or lower
current  income with options and other  features.  Warrants are options to buy a
stated number of shares of common stock at a specified price any time during the
life of the warrants (generally two or more years).

     MORTGAGE  BACKED  SECURITIES  AND  COLLATERALIZED  MORTGAGE  OBLIGATIONS --
Certain of the Funds may invest in mortgage-backed  securities (MBSs), including
mortgage pass through securities and collateralized mortgage obligations (CMOs).
MBSs  include  certain  securities  issued or  guaranteed  by the United  States
government or one of its agencies or  instrumentalities,  such as the Government
National Mortgage  Association  (GNMA),  Federal National  Mortgage  Association
(FNMA), or Federal Home Loan Mortgage Corporation (FHLMC);  securities issued by
private  issuers  that  represent  an  interest  in  or  are  collateralized  by
mortgage-backed securities issued or guaranteed by the U.S. government or one of
its agencies or instrumentalities; and securities issued by private issuers that
represent an interest in or are  collateralized  by mortgage  loans.  A mortgage
pass through  security is a pro rata  interest in a pool of mortgages  where the
cash flow  generated  from the  mortgage  collateral  is passed  through  to the
security holder.  CMOs are obligations  fully  collateralized  by a portfolio of
mortgages  or  mortgage-related  securities.  Certain of the Funds may invest in
securities known as "inverse floating  obligations,"  "residual interest bonds,"
and "interest only" (IO) and "principal  only" (PO) bonds,  the market values of
which will  generally be more  volatile  than the market values of most MBSs. An
inverse  floating  obligation  is a derivative  adjustable  rate  security  with
interest  rates that  adjust or vary  inversely  to  changes in market  interest
rates.  The term  "residual  interest"  bond is used generally to describe those
instruments  in collateral  pools,  such as CMOs,  which receive any excess cash
flow  generated by the pool once all other  bondholders  and expenses  have been
paid. IOs and POs are created by separating the interest and principal  payments
generated  by  a  pool  of  mortgage-backed  bonds  to  create  two  classes  of
securities.  Generally,  one class receives interest only payments (IOs) and the
other  class  principal  only  payments  (POs).  MBSs have been  referred  to as
"derivatives" because the performance of MBSs is dependent upon and derived from
underlying securities.

     Investment in MBSs poses several risks,  including  prepayment,  market and
credit  risks.  PREPAYMENT  RISK  reflects the chance that  borrowers may prepay
their mortgages faster than expected, thereby affecting the investment's average
life and  perhaps  its  yield.  Borrowers  are most  likely  to  exercise  their
prepayment  options  at a time  when  it is  least  advantageous  to  investors,
generally  prepaying  mortgages as interest rates fall, and slowing  payments as
interest rates rise.  Certain classes of CMOs may have priority over others with
respect to the receipt of  prepayments  on the mortgages and the Fund may invest
in CMOs which are subject to greater risk of  prepayment.  MARKET RISK  reflects
the chance that the price of the security may fluctuate  over time. The price of
MBSs may be particularly  sensitive to prevailing  interest rates, the length of
time the security is expected to be outstanding  and the liquidity of the issue.
In a period of  unstable  interest  rates,  there may be  decreased  demand  for
certain types of MBSs,  and a fund invested in such  securities  wishing to sell
them may find it difficult to find a buyer, which may in turn decrease the price
at which they may be sold. CREDIT RISK reflects the chance that the Fund may not
receive all or part of its principal  because the issuer or credit  enhancer has
defaulted  on its  obligations.  Obligations  issued by U.S.  Government-related
entities are guaranteed by the agency or instrumentality, and some, such as GNMA
certificates,  are supported by the full faith and credit of the U.S.  Treasury;
others are  supported  by the right of the issuer to borrow  from the  Treasury;
others, such as those of the FNMA, are supported by the discretionary  authority
of the U.S. Government to purchase the agency's  obligations;  still others, are
supported only by the credit of the instrumentality.  Although securities issued
by U.S.  Government-related  agencies are guaranteed by the U.S. Government, its
agencies or  instrumentalities,  shares of the Fund are not so guaranteed in any
way. The performance of private label MBSs, issued by private  institutions,  is
based on the financial health of those institutions.

     ASSET-BACKED  SECURITIES  --  Certain  of the  Funds  may  also  invest  in
"asset-backed  securities."  These include  secured debt  instruments  backed by
automobile  loans,  credit card loans, home equity loans,  manufactured  housing
loans and other types of secured loans  providing  the source

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of both  principal and interest.  Asset-backed  securities  are subject to risks
similar to those discussed above with respect to MBSs.

     WHEN-ISSUED AND FORWARD  COMMITMENT  SECURITIES -- Certain of the Funds may
purchase securities on a "when-issued" basis and may purchase or sell securities
on a "forward commitment" basis in order to hedge against anticipated changes in
interest  rates and prices.  The price,  which is  generally  expressed in yield
terms, is fixed at the time the commitment is made, but delivery and payment for
the securities  take place at a later date.  When-issued  securities and forward
commitments  may be sold prior to the settlement  date, but the Funds will enter
into  when-issued  and forward  commitments  only with the intention of actually
receiving or delivering the securities, as the case may be. No income accrues on
securities  which have been purchased  pursuant to a forward  commitment or on a
when-issued basis prior to delivery of the securities. If a Fund disposes of the
right to acquire a when-issued  security prior to its acquisition or disposes of
its right to  deliver or receive  against a forward  commitment,  it may incur a
gain or loss. At the time a Fund enters into a transaction  on a when-issued  or
forward  commitment  basis,  a segregated  account  consisting of cash or liquid
securities  equal  to  the  value  of  the  when-issued  or  forward  commitment
securities  will be established  and  maintained  with its custodian and will be
marked to market daily. There is a risk that the securities may not be delivered
and that the Fund may incur a loss.

     RESTRICTED  SECURITIES  (RULE 144A  SECURITIES) -- Certain of the Funds may
invest in restricted  securities  which are securities that are restricted as to
disposition under the federal securities laws, provided that such securities are
eligible for resale to qualified  institutional  investors pursuant to Rule 144A
under the Securities Act of 1933.

     The Global Aggressive Bond Fund and High Yield Fund may purchase restricted
securities,  including  securities  that are not eligible for resale pursuant to
Rule 144A.  These Funds may acquire such securities  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.  However,  the restrictions on resale of such securities may
make it  difficult  for the  Fund to  dispose  of such  securities  at the  time
considered  most  advantageous,  and/or may involve  expenses  that would not be
incurred in the sale of securities that were freely marketable. Risks associated
with restricted  securities include the potential  obligation to pay all or part
of the registration expenses in order to sell certain restricted  securities.  A
considerable  period of time may elapse between the time of the decision to sell
a security  and the time the Fund may be permitted to sell it under an effective
registration statement. If, during a period, adverse conditions were to develop,
the Fund might obtain a less favorable  price than prevailing when it decided to
sell.

     The  Funds'  Board  of  Directors  is   responsible   for   developing  and
establishing  guidelines and procedures  for  determining  the liquidity of Rule
144A securities. As permitted by Rule 144A, the Board of Directors has delegated
this  responsibility  to the  Investment  Manager.  In making the  determination
regarding the liquidity of Rule 144A  securities,  the  Investment  Manager will
consider  trading  markets for the  specific  security  taking into  account the
unregistered nature of a Rule 144A security. In addition, the Investment Manager
may consider:  (1) the frequency of trades and quotes; (2) the number of dealers
and potential purchasers;  (3) dealer undertakings to make a market; and (4) the
nature of the security and of the market place trades (e.g.,  the time needed to
dispose of the security,  the method of  soliciting  offers and the mechanics of
transfer). Investing in Rule 144A securities could have the effect of increasing
the amount of a Fund's assets invested in illiquid securities to the extent that
qualified  institutional buyers become  uninterested,  for a time, in purchasing
these securities.

     SOVEREIGN  DEBT.  The Global  Aggressive  Bond Fund may invest in sovereign
debt securities of emerging market governments,  including Brady Bonds. The High
Yield Fund may also invest in such  securities  provided they are denominated in
U.S.  dollars.  Sovereign debt  securities  are those issued by emerging  market
governments  that are traded in the markets of developed  countries or groups of
developed  countries.  Investments in such securities involve special risks. The
issuer of the debt or the governmental authorities that control the repayment of
the debt may be unable or unwilling to repay  principal or interest  when due in
accordance  with the terms of such debt.  Periods of  economic  uncertainty  may
result in the  volatility  of market prices of sovereign  debt,  and in turn the
Fund's net asset  value,  to a greater  extent than the  volatility  inherent in
domestic fixed income securities. A sovereign debtor's willingness or ability to
repay  principal  and pay interest in a timely  manner may be affected by, among
other factors, its cash flow situation,  the extent of its foreign reserves, the
availability  of sufficient  foreign  exchange on the date a payment is due, the
relative  size of the  debt  service  burden  to the  economy  as a  whole,  the
sovereign  debtor's  policy  toward  principal  international  lenders  and  the
political  constraints  to which a  sovereign  debtor may be  subject.  Emerging
market governments could default on their sovereign debt. Such sovereign debtors
also may be  dependent  on  expected  disbursements  from  foreign  governments,
multilateral agencies and other entities abroad to reduce principal and interest
arrearages  on their  debt.  The  commitment  on the part of these  governments,
agencies and others to make such disbursements may be conditioned on a sovereign
debtor's  implementation of economic reforms and/or economic performance and the
timely service of

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

such  debtor's  obligations.  Failure to implement  such  reforms,  achieve such
levels of economic  performance  or repay  principal  or interest  when due, may
result in the  cancellation of such third parties'  commitments to lend funds to
the  sovereign  debtor,  which may  further  impair  such  debtor's  ability  or
willingness to timely service its debt.

     The occurrence of political, social or diplomatic changes in one or more of
the  countries   issuing  sovereign  debt  could  adversely  affect  the  Fund's
investments.  Emerging  markets are faced with social and  political  issues and
some of them have  experienced  high rates of inflation in recent years and have
extensive  internal debt. Among other effects,  high inflation and internal debt
service  requirements  may adversely  affect the cost and availability of future
domestic  sovereign  borrowing to finance  governmental  programs,  and may have
other adverse social, political and economic consequences.  Political changes or
a deterioration  of a country's  domestic economy or balance of trade may affect
the  willingness  of countries to service  their  sovereign  debt.  Although the
Investment  Manager,  in the case of the High Yield Fund or the  Sub-Adviser and
MFR, in the case of the Global  Aggressive Bond Fund, intend to manage the Funds
in a manner that will  minimize  the  exposure  to such  risks,  there can be no
assurance that adverse  political changes will not cause a Fund to suffer a loss
of interest or principal on any of its holdings.

     In recent years,  some of the emerging market countries in which the Global
Aggressive  Bond  Fund  expects  to  invest  have  encountered  difficulties  in
servicing  their  sovereign  debt  obligations.  Some of  these  countries  have
withheld  payments  of  interest  and/or  principal  of  sovereign  debt.  These
difficulties   have  also  led  to  agreements  to  restructure   external  debt
obligations -- in particular,  commercial bank loans,  typically by rescheduling
principal payments, reducing interest rates and extending new credits to finance
interest  payments on existing debt. In the future,  holders of emerging  market
sovereign   debt   securities   may  be  requested  to  participate  in  similar
rescheduling  of such debt.  Certain  emerging  market  countries  are among the
largest debtors to commercial  banks and foreign  governments.  At times certain
emerging market countries have declared a moratorium on the payment of principal
and  interest on external  debt;  such a  moratorium  is  currently in effect in
certain emerging market countries.  There is no bankruptcy proceeding by which a
creditor  may  collect in whole or in part  sovereign  debt on which an emerging
market government has defaulted.

     The ability of emerging market governments to make timely payments on their
sovereign  debt  securities is likely to be  influenced  strongly by a country's
balance  of trade and its  access to trade and other  international  credits.  A
country whose exports are concentrated in a few commodities  could be vulnerable
to a decline  in the  international  prices of one or more of such  commodities.
Increased  protectionism on the part of a country's  trading partners could also
adversely  affect its  exports.  Such events  could  diminish a country's  trade
account  surplus,  if any. To the extent that a country receives payment for its
exports in  currencies  other  than hard  currencies,  its  ability to make hard
currency payments could be affected.

     Investors  should also be aware that certain  sovereign debt instruments in
which a Fund may invest  involve  great risk.  As noted  above,  sovereign  debt
obligations issued by emerging market governments generally are deemed to be the
equivalent in terms of quality to  securities  rated below  investment  grade by
Moody's and S&P. Such securities are regarded as predominantly  speculative with
respect  to the  issuer's  capacity  to pay  interest  and  repay  principal  in
accordance  with the terms of the obligations and involve major risk exposure to
adverse  conditions.  Some of such securities,  with respect to which the issuer
currently  may not be  paying  interest  or may be in  payment  default,  may be
comparable  to  securities  rated D by S&P or C by  Moody's.  The  Fund may have
difficulty  disposing of and valuing certain sovereign debt obligations  because
there may be a limited trading market for such  securities.  Because there is no
liquid secondary market for many of these securities,  the Fund anticipates that
such  securities  could  be  sold  only  to  a  limited  number  of  dealers  or
institutional investors. Certain sovereign debt securities may be illiquid.

     BRADY BONDS.  Certain of the Funds may invest in "Brady  Bonds,"  which are
debt  restructurings  that  provide for the exchange of cash and loans for newly
issued  bonds.  Brady  Bonds are  securities  created  through  the  exchange of
existing  commercial  bank  loans to public  and  private  entities  in  certain
emerging  markets for new bonds in connection  with debt  restructuring  under a
debt  restructuring  plan  introduced by former U.S.  Secretary of the Treasury,
Nicholas F. Brady.  Brady Bonds recently have been issued by the  governments of
Argentina,  Brazil,  Bulgaria,  Costa Rica, Dominican Republic,  Jordan, Mexico,
Nigeria,  The  Philippines,  Uruguay,  Venezuela,  Ecuador  and  Poland  and are
expected to be issued by other emerging  market  countries.  Approximately  $150
billion  in  principal  amount  of Brady  Bonds has been  issued  to date.  Fund
investors  should recognize that Brady Bonds have been issued only recently and,
accordingly,   do  not  have  a  long  payment  history.   Brady  Bonds  may  be
collateralized or uncollateralized,  are issued in various currencies (primarily
the U.S.  dollar)  and are  actively  traded in the  secondary  market for Latin
American debt.  The Salomon  Brothers Brady Bond Index provides a benchmark that
can be used to compare  returns of emerging  market  Brady Bonds with returns in
other bond markets, e.g., the U.S. bond market.

     The  Global  Aggressive  Bond Fund may invest in either  collateralized  or
uncollateralized  Brady  Bonds in  various  currencies.  The High Yield Fund may
invest only in collateralized  Brady Bonds,  denominated in U.S.  dollars.

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SECURITY FUNDS
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================================================================================

U.S. dollar-denominated, collateralized Brady Bonds, which may be fixed rate par
bonds  or  floating  rate  discount  bonds,  are  collateralized  in  full as to
principal by U.S.  Treasury  zero coupon  bonds having the same  maturity as the
bonds.  Interest payments on such bonds generally are  collateralized by cash or
securities  in an amount that,  in the case of fixed rate bonds,  is equal to at
least one year of rolling  interest  payments  or, in the case of floating  rate
bonds, initially is equal to at least one year's rolling interest payments based
on the applicable interest rate at the time and is adjusted at regular intervals
thereafter.

     LOAN  PARTICIPATIONS  AND ASSIGNMENTS.  The Global Aggressive Bond Fund and
the High  Yield  Fund may  invest in fixed and  floating  rate  loans  ("Loans")
arranged through private  negotiations between a corporate or foreign entity and
one  or  more  financial  institutions  ("Lenders").   The  majority  of  Global
Aggressive Bond Fund's  investments in Loans in emerging  markets is expected to
be in the form of participations in Loans  ("Participations") and assignments of
portions of Loans from third parties  ("Assignments").  Participations typically
will result in the Fund having a contractual  relationship only with the Lender,
not with the  borrower.  The Fund  will have the right to  receive  payments  of
principal,  interest  and any fees to which it is entitled  only from the Lender
selling the  Participation  and only upon  receipt by the Lender of the payments
from the  borrower.  In  connection  with  purchasing  Participations,  the Fund
generally  will have no right to enforce  compliance  by the  borrower  with the
terms of the loan  agreement  relating to the Loan ("Loan  Agreement"),  nor any
rights of set-off  against the borrower,  and the Fund may not directly  benefit
from  any  collateral  supporting  the  Loan  in  which  it  has  purchased  the
Participation.  As a result,  the Fund will  assume the credit  risk of both the
borrower and the Lender that is selling the Participation.

     In the event of the insolvency of the Lender selling a  Participation,  the
Fund may be treated as a general creditor of the Lender and may not benefit from
any  set-off  between  the  Lender  and the  borrower.  The  Fund  will  acquire
Participations  only if the  Lender  interpositioned  between  the  Fund and the
borrower is determined by the Investment  Manager, in the case of the High Yield
Fund, or Sub-Adviser and MFR, in the case of the Global Aggressive Bond Fund, to
be creditworthy. When the Fund purchases Assignments from Lenders, the Fund will
acquire  direct  rights  against  the  borrower  on  the  Loan.  However,  since
Assignments  are  arranged  through  private   negotiations   between  potential
assignees and assignors,  the rights and obligations acquired by the Fund as the
purchaser of an Assignment may differ from, and be more limited than, those held
by the assigning Lender.

     The Fund may have difficulty  disposing of Assignments and  Participations.
The liquidity of such securities is limited and the Fund  anticipates  that such
securities  could be sold only to a limited number of  institutional  investors.
The lack of a liquid  secondary market could have an adverse impact on the value
of  such  securities  and  on  the  Fund's  ability  to  dispose  of  particular
Assignments or Participations  when necessary to meet the Fund's liquidity needs
or in response to a specific  economic  event,  such as a  deterioration  in the
creditworthiness  of the  borrower.  The lack of a liquid  secondary  market for
Assignments and  Participations  also may make it more difficult for the fund to
assign a value to those  securities for purposes of valuing the Fund's portfolio
and calculating its net asset value.

     ZERO COUPON  SECURITIES -- Global  Aggressive Bond Fund and High Yield Fund
may invest in certain zero coupon  securities that are "stripped" U.S.  Treasury
notes and  bonds.  These  Funds  also may  invest in zero  coupon and other deep
discount  securities  issued by foreign  governments  and  domestic  and foreign
corporations,   including  certain  Brady  Bonds  and  other  foreign  debt  and
payment-in-kind  securities.  Zero coupon  securities pay no interest to holders
prior to maturity,  and  payment-in-kind  securities pay interest in the form of
additional securities. However, a portion of the original issue discount on zero
coupon  securities  and the  "interest" on  payment-in-kind  securities  will be
included in the investing  Fund's income.  Accordingly,  for the Fund to qualify
for tax treatment as a regulated  investment  company and to avoid certain taxes
(see  "Taxes"  in the  Statement  of  Additional  Information),  the Fund may be
required to  distribute  an amount that is greater than the total amount of cash
it  actually  receives.  These  distributions  must be made from the Fund's cash
assets or, if necessary, from the proceeds of sales of portfolio securities. The
Fund will not be able to purchase  additional  income-producing  securities with
cash used to make such  distributions  and its current income  ultimately may be
reduced as a result. Zero coupon and payment-in-kind securities usually trade at
a deep  discount  from  their  face or par value and will be  subject to greater
fluctuations  of market value in response to changing  interest  rates than debt
obligations of comparable maturities that make current distributions of interest
in cash.

     REPURCHASE AGREEMENTS,  REVERSE REPURCHASE AGREEMENTS AND ROLL TRANSACTIONS
- -- Each of the Funds may enter into repurchase agreements. Repurchase agreements
are  transactions  in which the  purchaser  buys a debt  security from a bank or
recognized securities dealer and simultaneously  commits to resell that security
to the bank or dealer at an agreed upon price,  date and market rate of interest
unrelated to the coupon rate or maturity of the purchased  security.  Repurchase
agreements  are  considered  to be  loans  which  must be  fully  collateralized
including  interest  earned thereon during the entire term of the agreement.  If
the  institution  defaults  on the  repurchase  agreement,  the Fund will retain
possession of the underlying securities. If bankruptcy proceedings are commenced
with

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

respect to the seller,  realization on the collateral by the Fund may be delayed
or limited and the Fund may incur additional  costs. In such case, the Fund will
be subject to risks  associated  with changes in market value of the  collateral
securities. The Fund intends to enter into repurchase agreements only with banks
and broker/dealers believed to present minimal credit risks.

     The Global Aggressive Bond Fund and the High Yield Fund may also enter into
reverse  repurchase  agreements  with the same  parties with whom they may enter
into repurchase  agreements.  Under a reverse repurchase agreement, a Fund would
sell securities and agree to repurchase  them at a particular  price at a future
date.  Reverse  repurchase  agreements involve the risk that the market value of
the securities retained in lieu of sale by a Fund may decline below the price of
the securities  the Fund has sold but is obligated to  repurchase.  In the event
the  buyer  of  securities  under  a  reverse  repurchase  agreement  files  for
bankruptcy  or becomes  insolvent,  such buyer or its  trustee or  receiver  may
receive  an  extension  of time to  determine  whether  to  enforce  the  Fund's
obligation to repurchase the  securities,  and the Fund's use of the proceeds of
the reverse  repurchase  agreement may  effectively  be restricted  pending such
decision.

     The Global Aggressive Bond Fund and the High Yield Fund also may enter into
"dollar rolls," in which the Fund sells fixed income  securities for delivery in
the current  month and  simultaneously  contracts  to  repurchase  substantially
similar (same type, coupon and maturity)  securities on a specified future date.
During the roll period,  the Fund would forego  principal  and interest  paid on
such  securities.  The Fund would be compensated  by the difference  between the
current sales price and the forward price for the future purchase, as well as by
the interest  earned on the cash proceeds of the initial sale.  See  "Investment
Objectives and Policies" in the Statement of Additional Information.

INVESTMENT METHODS

     BORROWING  -- Each of the Funds may borrow  money from banks as a temporary
measure for emergency purposes, or to facilitate redemption requests.

     From time to time,  it may be  advantageous  for the Funds to borrow  money
rather than sell  existing  portfolio  positions  to meet  redemption  requests.
Accordingly, the Funds may borrow from banks and the Global Aggressive Bond Fund
and the High Yield Fund may borrow  through  reverse  repurchase  agreements and
"roll"  transactions,  in connection with meeting requests for the redemption of
Fund shares.  High Yield Fund may borrow up to 33 1/3 percent;  Limited Maturity
Bond,  Tax-Exempt  and Cash Funds may each borrow up to 10 percent and Corporate
Bond, U.S.  Government and Global  Aggressive Bond Funds may each borrow up to 5
percent of total Fund  assets.  To the extent that a Fund  purchases  securities
while it has outstanding borrowings,  it is using leverage, i.e., using borrowed
funds for  investment.  Leveraging will exaggerate the effect on net asset value
of any  increase or decrease in the market  value of a Fund's  portfolio.  Money
borrowed for leveraging will be subject to interest costs that may or may not be
recovered  by  appreciation  of the  securities  purchased;  in  certain  cases,
interest  costs may exceed the return  received on the securities  purchased.  A
Fund also may be required to maintain  minimum  average  balances in  connection
with such  borrowing or to pay a  commitment  or other fee to maintain a line of
credit;  either of these  requirements would increase the cost of borrowing over
the stated  interest  rate.  It is not  expected  that Cash Fund would  purchase
securities while it had borrowings outstanding.

     OPTIONS, FUTURES AND FORWARD CURRENCY TRANSACTIONS -- In seeking to protect
against  interest  rate  changes and  currency  exchange  rate  changes that are
adverse to its present or prospective positions, certain of the Funds may employ
certain  risk  management  practices  involving  the  use  of  forward  currency
contracts  and  options  contracts,  futures  contracts  and  options on futures
contracts on U.S. and foreign  government  securities and currencies.  The Funds
also may enter into interest rate, currency and index swaps and purchase or sell
related caps, floors and collars. The Fund's investment in derivative securities
will be utilized for hedging purposes and not for speculation. See "Swaps, Caps,
Floors and Collars" below. See also "Derivative  Instruments:  Options,  Futures
and Forward  Currency  Strategies"  in the Statement of Additional  Information.
There can be no assurance that a Fund's risk management  practices will succeed.
Only a limited market, if any,  currently exists for forward currency  contracts
and options and futures  instruments  relating to  currencies  of most  emerging
markets,  to  securities  denominated  in such  currencies  or to  securities of
issuers  domiciled or principally  engaged in business in such emerging markets.
To the extent  that such a market  does not  exist,  the Fund may not be able to
effectively hedge its investment in such emerging markets.

     To attempt to hedge  against  adverse  movements in exchange  rates between
currencies,  certain  Funds may enter into forward  currency  contracts  for the
purchase  or sale of a  specified  currency at a  specified  future  date.  Such
contracts  may involve the  purchase or sale of a foreign  currency  against the
U.S.  dollar or may involve two  foreign  currencies.  Such Funds may enter into
forward currency contracts either with respect to specific  transactions or with
respect to its portfolio positions.  For example, when a Fund anticipates making
a purchase or sale of a security,  it may enter into a forward currency contract
in  order  to set the rate  (either  relative  to the  U.S.  dollar  or  another
currency) at which a currency  exchange  transaction  related to the purchase or
sale will be made.  Further,  when it is anticipated that a particular  currency
may decline compared

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                                       18
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SECURITY FUNDS
PROSPECTUS
================================================================================

to the U.S.  dollar  or  another  currency,  the Fund may  enter  into a forward
contract to sell the  currency  expected to decline in an amount up to the value
of the portfolio securities held by the Fund denominated in a foreign currency.

     In addition, certain Funds may purchase put and call options and write such
options  on a  "covered"  basis on  securities  that are  traded  on  recognized
securities exchanges and  over-the-counter  ("OTC") markets. The Fund will cause
its custodian to segregate cash or liquid  securities  having a value sufficient
to meet the Fund's  obligations under the option.  The Funds also may enter into
interest  rate futures  contracts and purchase and write options to buy and sell
such  futures  contracts,  to the  extent  permitted  under  regulations  of the
Commodities Futures Trading Commission ("CFTC"). The Funds will not employ these
practices for  speculation;  however,  these practices may result in the loss of
principal  under  certain  conditions.  In addition,  certain  provisions of the
Internal Revenue Code of 1986, as amended ("Code"),  limit the extent to which a
Fund may enter into forward  contracts or futures contracts or engage in options
transactions.  See "Taxes" in the Statement of Additional  Information.  Certain
Funds also may purchase put or call options or futures  contracts on  currencies
for the same purposes as it may use forward currency contracts.

     A  Fund's  use  of  forward  currency  contracts  or  options  and  futures
transactions thereon,  involve certain investment risks and transaction costs to
which it might not otherwise be subject.  These risks  include:  an inability to
predict movements in exchange rates;  imperfect correlation between movements in
exchange  rates and  movements  in the  currency  hedged;  and the fact that the
skills  needed to  effectively  hedge  against  the  Fund's  currency  risks are
different  from those needed to select the  securities  in which a Fund invests.
The Fund also may conduct its foreign currency  exchange  transactions on a spot
(i.e.,  cash) basis at the spot rate prevailing in the foreign currency exchange
market.

     SWAPS,  CAPS,  FLOORS AND COLLARS -- Certain  Funds may enter into interest
rate, index and currency swaps, and the purchase or sale of related caps, floors
and  collars.  The Fund  expects to enter into these  transactions  primarily to
preserve  a return  or spread  on a  particular  investment  or  portion  of its
portfolio,  to protect against currency fluctuations as a technique for managing
the  portfolio's  duration (i.e.,  the price  sensitivity to changes in interest
rates) or to protect  against any increase in the price of  securities  the Fund
anticipates  purchasing  at  a  later  date.  The  Funds  intend  to  use  these
transactions  as hedges and not as  speculative  investments,  and will not sell
interest rate caps or floors if it does not own securities or other  instruments
providing the income the Fund may be obligated to pay.

     Interest  rate swaps involve the exchange by the Fund with another party of
their  respective  commitments  to pay or  receive  interest  (for  example,  an
exchange of floating  rate payments for fixed rate  payments)  with respect to a
notional  amount of principal.  A currency swap is an agreement to exchange cash
flows on a notional  amount  based on  changes  in the  values of the  reference
indices.

     The  purchase of a cap  entitles  the  purchaser  to receive  payments on a
notional  principal  amount from the party  selling the cap to the extent that a
specified  index  exceeds a  predetermined  interest  rate.  The  purchase of an
interest  rate floor  entitles the  purchaser to receive  payments on a notional
principal amount from the party selling the floor to the extent that a specified
index  falls  below a  predetermined  interest  rate or  amount.  A collar  is a
combination  of a cap and a floor  that  preserves  a  certain  return  within a
predetermined range of interest rates or values.

     AMERICAN  DEPOSITARY  RECEIPTS  (ADRS) -- The High Yield Fund may invest in
sponsored ADRs. ADRs are  dollar-denominated  receipts issued  generally by U.S.
banks and  which  represent  the  deposit  with the bank of a foreign  company's
securities.  ADRs are publicly  traded on exchanges or  over-the-counter  in the
United  States.  Investors  should  consider  carefully  the  substantial  risks
involved in investing  in  securities  issued by  companies of foreign  nations,
which are in addition to the usual risks inherent in domestic  investments.  See
"Foreign Investment Risks," below.

     LENDING OF PORTFOLIO  SECURITIES  -- Certain  Funds may lend  securities to
broker-dealers,  institutional  investors,  or other persons to earn income. The
principal  risk  is the  potential  insolvency  of the  broker-dealer  or  other
borrower.  In this event,  the Fund could  experience  delays in recovering  its
securities and possibly capital losses. Any loan will be continuously secured by
collateral  at least equal to the value of the  security  loaned.  Such  lending
could result in delays in receiving additional  collateral or in the recovery of
the securities or possible loss of rights in the collateral  should the borrower
fail financially.

RISK FACTORS

     GENERAL  RISK  FACTORS  -- Each  Fund's  net asset  value  will  fluctuate,
reflecting  fluctuations in the market value of its portfolio  positions and, if
applicable, its net currency exposure. The value of fixed income securities held
by the Funds generally  fluctuates  inversely with interest rate  movements.  In
other words,  bond prices  generally  fall as interest  rates rise and generally
rise as interest rates fall.  Longer term bonds held by the Funds are subject to
greater interest rate risk. There is no assurance that any Fund will achieve its
investment objective.

     FOREIGN INVESTMENT RISK -- Investment in foreign securities  involves risks
and  considerations  not  present in  domestic  investments.  Foreign  companies
generally  are  not  subject  to  uniform  accounting,  auditing  and  financial
reporting standards,  practices and requirements  comparable

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

to those  applicable  to U.S.  companies.  The  securities  of non-U.S.  issuers
generally are not registered  with the SEC, nor are the issuers  thereof usually
subject  to the SEC's  reporting  requirements.  Accordingly,  there may be less
publicly  available  information  about foreign  securities  and issuers than is
available with respect to U.S. securities and issuers. A Fund's income and gains
from  foreign  issuers may be subject to non-U.S.  withholding  or other  taxes,
thereby  reducing  their  income and gains.  In  addition,  with respect to some
foreign  countries,  there is the  increased  possibility  of  expropriation  or
confiscatory  taxation,  limitations  on the removal of funds or other assets of
the Fund,  political or social  instability,  or diplomatic  developments  which
could  affect  the  investments  of  the  Fund  in  those  countries.  Moreover,
individual  foreign  economies may differ favorably or unfavorably from the U.S.
economy in such respects as growth of gross national product, rate of inflation,
rate of savings and capital reinvestment,  resource self-sufficiency and balance
of payments positions.

     CURRENCY RISK -- Since the Global  Aggressive  Bond Fund  normally  invests
substantially  in  securities  denominated  in  currencies  other  than the U.S.
dollar, and since it may hold foreign  currencies,  the value of such securities
will be affected  favorably or  unfavorably by exchange  control  regulations or
changes in the exchange  rates  between  such  currencies  and the U.S.  dollar.
Changes  in  currency  exchange  rates  will  influence  the value of the Fund's
shares,  and also may affect the value of dividends  and interest  earned by the
Fund and  gains  and  losses  realized  by the Fund.  Currencies  generally  are
evaluated  on  the  basis  of  fundamental  economic  criteria  (e.g.,  relative
inflation and interest rate levels and trends, growth rate forecasts, balance of
payments status and economic  policies) as well as technical and political data.
The exchange rates between the U.S.  dollar and other  currencies are determined
by supply and demand in the currency exchange markets, the international balance
of  payments,  governmental  intervention,  speculation  and other  economic and
political conditions.

     If the currency in which a security is denominated  appreciates against the
U.S.  dollar,  the dollar value of the security  will  increase.  Conversely,  a
decline in the exchange rate of the currency would adversely affect the value of
the security expressed in U.S. dollars.

     RISKS  ASSOCIATED  WITH  INVESTMENT  IN EMERGING  MARKETS -- Certain of the
Funds may invest in emerging  markets.  Because of the special risks  associated
with  investing  in  emerging  markets,  an  investment  in a Fund  making  such
investments should be considered speculative.  Investors are strongly advised to
consider carefully the special risks involved in emerging markets,  which are in
addition to the usual risks of investing in developed foreign markets around the
world.  Investing  in emerging  markets  involves  risks  relating to  potential
political   economic   instability   within  such   markets  and  the  risks  of
expropriation,  nationalization,  confiscation  of assets  and  property  or the
imposition of restrictions on foreign  investment and on repatriation of capital
invested.  In  the  event  of  such  expropriation,   nationalization  or  other
confiscation in any emerging market,  the Fund could lose its entire  investment
in that market. Many emerging market countries have experienced substantial, and
in some periods extremely high, rates of inflation for many years. Inflation and
rapid fluctuations in inflation rates have had and may continue to have negative
effects on the  economies  and  securities  markets of certain  emerging  market
countries.  Economies in emerging markets  generally are dependent  heavily upon
international trade and, accordingly,  have been and may continue to be affected
adversely by trade barriers,  exchange controls, managed adjustments in relative
currency values and other  protectionist  measures  imposed or negotiated by the
countries with which they trade. These economies also have been and may continue
to be affected adversely by economic conditions in the countries with which they
trade.

     The securities  markets of emerging  countries are  substantially  smaller,
less developed, less liquid and more volatile than the securities markets of the
United States and other more  developed  countries.  Disclosure  and  regulatory
standards in many  respects  are less  stringent  than in the United  States and
other  major  markets.  There  also  may be a  lower  level  of  monitoring  and
regulation  of emerging  securities  markets and the  activities of investors in
such  markets,  and  enforcement  of  existing  regulations  has been  extremely
limited.  Investments may also be made in former communist countries. There is a
possibility that these countries may revert to communism. In addition, brokerage
commissions,  custodial  services  and other  costs  relating to  investment  in
foreign  markets  generally  are  more  expensive  than  in the  United  States,
particularly  with respect to emerging  markets.  Such  markets  have  different
settlement and clearance  procedures.  In certain  markets there have been times
when  settlements  have been  unable to keep pace with the volume of  securities
transactions, making it difficult to conduct such transactions. The inability of
a Fund to make intended  securities  purchases due to settlement  problems could
cause it to forego attractive investment opportunities.  Inability to dispose of
a portfolio security caused by settlement problems could result either in losses
to a Fund due to subsequent declines in value of the portfolio security or, if a
Fund has entered into a contract to sell the security,  could result in possible
liability to the purchaser.

     The risk also exists that an emergency  situation  may arise in one or more
emerging  markets as a result of which trading of securities may cease or may be
substantially  curtailed  and prices for a Fund's  portfolio  securities in such
markets may not be readily  available.  Section  22(e) of the

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

1940 Act permits a registered  investment  company to suspend  redemption of its
shares for any period  during which an emergency  exists,  as  determined by the
SEC. Accordingly,  when a Fund believes that appropriate  circumstances warrant,
it will promptly apply to the SEC for a determination  that an emergency  exists
within  the  meaning  of  Section  22(e)  of the 1940  Act.  During  the  period
commencing from a Fund's identification of such conditions until the date of SEC
action,  the  portfolio  securities  of a Fund in the  affected  markets will be
valued at fair value as  determined  in good faith by or under the  direction of
the Fund's Board of Directors.

     RISKS  ASSOCIATED WITH  LOWER-RATED DEBT SECURITIES (JUNK BONDS) -- Certain
of the Funds may invest in higher  yielding debt  securities in the lower rating
(higher risk) categories of the recognized rating services (commonly referred to
as "junk  bonds").  Debt rated BB, B, CCC, CC and C by S&P and rated Ba, B, Caa,
Ca and C by Moody's, is 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.  For S&P, BB indicates the lowest
degree of speculation and C the highest degree of speculation.  For Moody's,  Ba
indicates  the  lowest  degree  of  speculation  and C  the  highest  degree  of
speculation.  While  such debt will  likely  have some  quality  and  protective
characteristics,  these are  outweighed  by large  uncertainties  or major  risk
exposures  to adverse  conditions.  Similarly,  debt rated Ba or BB and below is
regarded by the relevant rating agency as  speculative.  Debt rated C by Moody's
or S&P is the lowest  quality  debt that is not in default  as to  principal  or
interest  and such  issues so rated can be  regarded  as having  extremely  poor
prospects of ever attaining any real  investment  standing.  Such securities are
also  generally  considered  to be subject to greater  risk than higher  quality
securities with regard to a deterioration  of general economic  conditions.  The
Global  Aggressive Bond Fund may invest in debt securities  rated below C, which
are in default  as to  principal  and/or  interest.  Ratings of debt  securities
represent  the rating  agency's  opinion  regarding  their quality and are not a
guarantee  of  quality.  Rating  agencies  attempt  to  evaluate  the  safety of
principal and interest payments and do not evaluate the risks of fluctuations in
market value.  Also,  rating  agencies may fail to make timely changes in credit
quality in response to subsequent  events, so that an issuer's current financial
condition may be better or worse than a rating indicates.

     The  market  value  of  lower  quality  debt  securities  tend  to  reflect
individual developments of the issuer to a greater extent than do higher quality
securities,  which react  primarily  to  fluctuations  in the  general  level of
interest  rates.  In addition,  lower  quality debt  securities  tend to be more
sensitive to economic  conditions and generally  have more volatile  prices than
higher quality securities.  Issuers of lower quality securities are often highly
leveraged  and may not  have  available  to them  more  traditional  methods  of
financing.  For example,  during an economic  downturn or a sustained  period of
rising interest rates,  highly leveraged issuers of lower quality securities may
experience  financial  stress.  During such  periods,  such issuers may not have
sufficient  revenues to meet their interest  payment  obligations.  The issuer's
ability  to service  its debt  obligations  may also be  adversely  affected  by
specific  developments  affecting the issuer,  such as the issuer's inability to
meet specific  projected  business forecasts or the unavailability of additional
financing.  Similarly,  certain  emerging  market  governments  that issue lower
quality  debt  securities  are among the largest  debtors to  commercial  banks,
foreign  governments and supranational  organizations such as the World Bank and
may not be able or willing to make principal and/or interest  repayments as they
come due. The risk of loss due to default by the issuer is significantly greater
for the  holders  of  lower  quality  securities  because  such  securities  are
generally unsecured and are often subordinated to other creditors of the issuer.

     Lower quality debt securities of corporate issuers  frequently have call or
buy-back  features  which  would  permit  an issuer  to call or  repurchase  the
security from the Fund. If an issuer  exercises these  provisions in a declining
interest  rate market,  the Fund may have to replace the  security  with a lower
yielding security,  resulting in a decreased return for investors.  In addition,
the Fund may have difficulty disposing of lower quality securities because there
may be a thin trading  market for such  securities.  There may be no established
retail secondary market for many of these  securities,  and the Fund anticipates
that  such  securities  could be sold only to a limited  number  of  dealers  or
institutional  investors. The lack of a liquid secondary market also may have an
adverse  impact  on  market  prices  of such  instruments  and may  make it more
difficult  for the Fund to obtain  accurate  market  quotations  for purposes of
valuing the securities in the portfolio of the Fund.

     Adverse  publicity  and  investor  perceptions,  whether  or not  based  on
fundamental  analysis,  may also  decrease  the  values and  liquidity  of lower
quality securities,  especially in a thinly traded market. The Global Aggressive
Bond Fund and the High Yield Fund also may acquire lower quality debt securities
during an initial  underwriting  or may acquire  lower  quality debt  securities
which are sold without  registration  under  applicable  securities  laws.  Such
securities involve special considerations and risks.

     Factors  having  an  adverse  effect  on the  market  value of lower  rated
securities or their equivalents  purchased by the Fund will adversely impact net
asset value of the Fund.  See "Risk  Factors"  in the  Statement  of  Additional
Information.  In addition  to the  foregoing,  such  factors  may  include:  (i)
potential adverse publicity;  (ii) heightened sensitivity to general economic or
political  conditions;  and (iii) the likely  adverse impact of a major economic
recession.  The Fund

- --------------------------------------------------------------------------------
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also may incur additional expenses to the extent it is required to seek recovery
upon a  default  in the  payment  of  principal  or  interest  on its  portfolio
holdings,  and the  Fund may  have  limited  legal  recourse  in the  event of a
default.  Debt securities  issued by governments in emerging  markets can differ
from debt obligations  issued by private entities in that remedies from defaults
generally must be pursued in the courts of the defaulting government,  and legal
recourse is therefore somewhat diminished.  Political conditions,  in terms of a
government's willingness to meet the terms of its debt obligations,  also are of
considerable  significance.  There  can be no  assurance  that  the  holders  of
commercial bank debt may not contest  payments to the holders of debt securities
issued  by  governments  in  emerging  markets  in the event of  default  by the
governments under commercial bank loan agreements.

     The  Investment  Manager and,  with respect to the Global  Aggressive  Bond
Fund, the Sub-Adviser  and MFR, will attempt to minimize the  speculative  risks
associated with investments in lower quality  securities through credit analyses
and  by  carefully  monitoring  current  trends  in  interest  rates,  political
developments and other factors.  Nonetheless,  investors should carefully review
the  investment  objectives and policies of the Funds and consider their ability
to assume the  investment  risks  involved  before  making an  investment in the
Funds.

MANAGEMENT OF THE FUNDS

     The management of the Funds' business and affairs is the  responsibility of
the  Board of  Directors.  Security  Management  Company,  LLC (the  "Investment
Manager"), 700 Harrison Street, Topeka, Kansas, is responsible for selection and
management of the Funds'  portfolio  investments.  The  Investment  Manager is a
limited  liability  company which is ultimately  controlled by Security  Benefit
Life Insurance  Company, a mutual life insurance company with over $15.5 billion
of insurance in force. The Investment Manager also acts as investment adviser to
Security Equity, Growth and Income, and Ultra Funds and SBL Fund. The Investment
Manager currently manages approximately $3.5 billion in assets.

     The Investment  Manager has engaged Lexington  Management  Corporation (the
"Sub-Adviser"),  Park 80 West Plaza Two,  Saddle  Brook,  New Jersey  07663,  to
provide certain investment advisory services to Global Aggressive Bond Fund. The
Sub-Adviser is a  wholly-owned  subsidiary of Lexington  Global Asset  Managers,
Inc., a Delaware  corporation  with offices at Park 80 West,  Plaza Two,  Saddle
Brook, New Jersey 07663. Descendants of Lunsford Richardson, Sr., their spouses,
trusts  and  other  related  entities  have a  majority  voting  control  of the
outstanding shares of Lexington Global Asset Managers,  Inc. The Sub-Adviser was
established in 1938 and currently manages over $3.8 billion in assets.

     The Sub-Adviser has entered into a sub-advisory contract with MFR Advisors,
Inc.,  ("MFR"),  One World Financial Center,  200 Liberty Street,  New York, New
York 10281,  under which MFR will provide the Global  Aggressive  Bond Fund with
investment and economic research services.  MFR currently acts as Sub-Adviser to
the Lexington  Ramirez  Global  Income Fund and also serves as an  institutional
manager for private clients. MFR is a subsidiary of Maria Fiorini Ramirez,  Inc.
("Ramirez"),  which was established in August of 1992 to provide global economic
consulting,  investment  advisory  and  broker-dealer  services.  Ramirez is the
successor firm to Maria Ramirez Capital  Consultants,  Inc.  ("MRCC").  MRCC was
formed  in  April  1990 as a  subsidiary  of  John  Hancock  Freedom  Securities
Corporation and offered in-depth economic consulting services to clients.

     Subject to the  supervision and direction of the Funds' Board of Directors,
the Investment  Manager,  and, with respect to Global  Aggressive Bond Fund, the
Sub-Adviser  and MFR,  manage the Fund portfolios in accordance with each Fund's
stated investment objective and policies and make all investment decisions.  The
Investment Manager has agreed that total annual expenses of the respective Funds
(including  for any fiscal year,  the  management  fee, but excluding  interest,
taxes,  brokerage  commissions,  extraordinary expenses and Class B distribution
fees) shall not for the Corporate Bond, Limited Maturity Bond, U.S.  Government,
Global  Aggressive  Bond and High Yield Funds exceed the level of expenses which
the Funds are permitted to bear under the most  restrictive  expense  limitation
imposed by any state in which shares of the Fund are then qualified for sale and
shall not for  Tax-Exempt  and Cash  Funds  exceed one  percent  of each  Fund's
average net assets for the year. The  Investment  Manager will  contribute  such
funds to the Funds or waive such portion of its compensation as may be necessary
to insure that such total annual expenses do not exceed any such limitation.  As
compensation for its management services,  the Investment Manager receives on an
annual  basis,  .5 percent of the average  daily net assets of  Corporate  Bond,
Limited Maturity Bond, U.S. Government, Tax-Exempt and Cash Funds; .6 percent of
the  average  daily net  assets of the High  Yield  Fund and .75  percent of the
average  daily net assets of Global  Aggressive  Bond Fund,  computed on a daily
basis and payable  monthly.  As  compensation  for the services  provided to the
Global Aggressive Bond Fund, the Investment Manager pays the Sub-Adviser,  on an
annual basis, a fee equal to .35 percent of the average daily net assets of such
Fund,  calculated daily and payable monthly.  For the services  provided by MFR,
MFR  receives  from the  Sub-Adviser,  on an  annual  basis,  a fee equal to .15
percent

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of the average daily net assets of the Global  Aggressive Bond Fund,  calculated
daily and payable monthly.

     The Investment Manager also acts as the administrative agent for the Funds,
and as such performs administrative  functions, and the bookkeeping,  accounting
and pricing  functions for the Funds.  For this service the  Investment  Manager
receives  on an annual  basis,  a fee of .09  percent of the  average  daily net
assets of Corporate Bond, Limited Maturity Bond, U.S. Government, High Yield and
Tax-Exempt  Funds and .045  percent of the average  daily net assets of Cash and
Global  Aggressive Bond Funds,  calculated  daily and payable  monthly.  For the
identified  administrative  services the Investment Manager also receives,  with
respect to the Global  Aggressive  Bond Fund, an annual fee equal to the greater
of .10  percent of its average net assets or (i) $30,000 in the year ended April
29, 1996;  (ii) $45,000 in the year ending  April 29,  1997;  and (iii)  $60,000
thereafter.  The Investment Manager also acts as the transfer agent and dividend
disbursing  agent for the Funds.  The  Investment  Manager has  arranged for the
Sub-Adviser to provide certain administrative services to Global Aggressive Bond
Fund including  performing certain accounting and pricing functions.  The Funds'
expenses  include  fees paid to the  Investment  Manager as well as  expenses of
brokerage   commissions,   interest,   taxes,  Class  B  distribution  fees  and
extraordinary expenses approved by the Board of Directors of the Funds.

     For the year ended December 31, 1995, the total  expenses,  as a percentage
of average net assets,  were 1.02 percent for Class A and 1.85 percent for Class
B shares of Corporate  Bond Fund;  1.11 percent for Class A and 1.87 percent for
Class B shares of U.S. Government Fund; .86 percent for Class A and 2.00 percent
for Class B shares of Tax-Exempt  Fund;  and 1.00 percent for Cash Fund. For the
period  January 17, 1995 (date of inception) to December 31, 1995 and the period
June 1, 1995 (date of inception) to December 31, 1995,  the total  expenses were
 .84  percent  for Class A shares and 1.71  percent for Class B shares of Limited
Maturity  Bond Fund and 2.00  percent  for Class A shares and 2.75  percent  for
Class B shares of Global Aggressive Bond Fund, respectively. Expense information
is not yet  available  for the High  Yield  Fund as it did not begin  operations
until August of 1996.

   
PROPOSED NEW ADVISORY AGREEMENTS FOR THE GLOBAL AGGRESSIVE BOND FUND

     The Board of  Directors  of  Security  Income Fund has  approved  (i) a new
investment  advisory  agreement between MFR Advisors,  Inc. ("MFR") and Security
Income Fund and (ii) a new  sub-advisory  agreement  between  MFR and  Lexington
Management  Corporation  ("Lexington").  MFR and  Lexington  currently  serve as
sub-advisers of the Global Aggressive Bond Fund. The new agreements  provide for
MFR and  Lexington to provide  investment  advisory and  sub-advisory  services,
respectively,  to the Global Aggressive Bond Fund.  Security Management Company,
LLC (the "Investment  Manager") which currently serves as investment  adviser to
Global Aggressive Bond Fund proposed the new advisory agreements to the Board of
Directors.  The Board of  Directors,  including a majority of the  disinterested
directors of the Fund, approved the agreements at a meeting of the Board held on
February  7,  1997.  The  stockholders  will vote on  approval  of the  proposed
investment  advisory  and  sub-advisory  agreements  at  a  special  meeting  of
stockholders  to be held April 28,  1997.  If the  stockholders  approve the new
investment  advisory and  sub-advisory  agreements,  the  existing  advisory and
sub-advisory  agreements will terminate  effective May 1, 1997, and the proposed
agreements  will be in effect on that date.  The terms of the new  advisory  and
sub-advisory  agreements are identical in all material  respects to the existing
agreements,  including the  investment  management fee payable by the Fund under
the agreements.

     Security  Benefit Life  Insurance  Company  ("SBL"),  parent company of the
Investment Manager, is negotiating with Maria Fiorini Ramirez, Inc. ("Ramirez"),
which owns 100 percent of the outstanding  common stock of MFR, to acquire stock
rights  that would  enable SBL to  acquire  up to 100  percent of the  ownership
interest in MFR upon the exercise of those  rights.  Maria Fiorini  Ramirez,  an
individual, owns 100 percent of the common stock of Ramirez.

     See "Management of the Funds" above for more information about the existing
investment advisory and sub-advisory agreements.
    

PORTFOLIO MANAGEMENT

     Corporate  Bond,  Limited  Maturity  Bond,  U.S.  Government,  High  Yield,
Tax-Exempt  and Cash  Funds  will be  managed  by the Fixed  Income  Team of the
Investment Manager consisting of John Cleland, Chief Investment Strategist, Jane
Tedder, Tom Swank, Steve Bowser, Barb Davison,  Greg Hamilton and Elaine Miller.
Greg  Hamilton,  Second  Vice  President  of the  Investment  Manager,  has  had
day-to-day responsibility for managing Corporate Bond, Limited Maturity Bond and
Tax-Exempt Funds since January 1996. Steve Bowser,  Assistant Vice President and
Portfolio Manager of the Investment Manager,  has had day-to-day  responsibility
for managing U.S.  Government Fund since 1995. Tom Swank,  Second Vice President
and  Portfolio   Manager  for  the  Investment   Manager,   has  had  day-to-day
responsibility for managing the High Yield Fund since its inception in 1996.

     Mr.  Hamilton has been in the investment  field since 1983. He received his
Bachelor of Arts degree in Business from Washburn  University in 1984.  Prior to
joining  Security  Management  Company  in  January  of 1993,  he was First Vice
President,  Treasurer and Portfolio  Manager with Mercantile  National Bank, Los
Angeles,  California,  from  1990 to 1993.

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From 1986 to 1990, he was Managing  Director of Consulting  Services for Sendero
Corporation,  Scottsdale, Arizona. Prior to Sendero Corporation, he was employed
as Fixed Income Research  Analyst at Peoples Heritage Savings and Loan from 1983
to 1986.

     Mr.  Bowser  joined the  Investment  Manager in 1992.  Prior to joining the
Investment  Manager,  he was Assistant Vice President and Portfolio Manager with
the Federal  Home Loan Bank of Topeka from 1989 to 1992.  He was employed at the
Federal  Reserve  Bank of Kansas City in 1988 and began his career with the Farm
Credit  System  from 1982 to 1987,  serving as a Senior  Financial  Analyst  and
Assistant Controller. He graduated with a Bachelor of Science degree from Kansas
State University in 1982.

     Tom Swank has over ten years of experience in the investment field. He is a
Chartered Financial Analyst. Prior to joining the Investment Manager in 1992, he
was an  Investment  Underwriter  and Portfolio  Manager for U.S. West  Financial
Services,  Inc. from 1986 to 1992. From 1984 to 1986, he was a Commercial Credit
Officer for United Bank of Denver.  From 1982 to 1984, he was employed as a Bank
Holding  Company  examiner for the Federal  Reserve Bank of Kansas City - Denver
Branch.  Mr. Swank  graduated  from Miami  University in Ohio with a Bachelor of
Science degree in finance in 1982 and earned a Master of Business Administration
degree from the University of Colorado.

     Global Aggressive Bond Fund is managed by an investment  management team of
the  Sub-Adviser  and MFR. Denis P. Jamison and Maria Fiorini  Ramirez have been
the lead managers since the Fund's inception in June 1995.

     Mr. Jamison, C.F.A., Senior Vice President,  Director Fixed Income Strategy
of the Sub-Adviser,  is responsible for fixed-income portfolio management. He is
a member of the New York Society of Security Analysts. Mr. Jamison has more than
20 years  investment  experience.  Prior to joining the Sub-Adviser in 1981, Mr.
Jamison spent nine years at Arnold Bernhard & Company, an investment  counseling
and  financial  services  organization.  At  Bernhard,  he was a Vice  President
supervising the security analyst staff and managing investment portfolios. He is
a specialist in  government,  corporate and municipal  bonds.  Mr.  Jamison is a
graduate of the City College of New York with a B.A. in Economics.

     Maria Fiorini Ramirez,  President and Chief Executive Officer of MFR, began
her career as a credit  analyst  with  American  Express  International  Banking
Corporation  in 1968.  In 1972,  she moved to Banco  Nazionale  De Lavoro in New
York. The following year, she started a ten year association with Merrill Lynch,
serving as Vice President and Senior Money Market  Economist.  She joined Becker
Paribas in 1984 as Vice  President  and Senior  Money  Market  Economist  before
joining Drexel Burnham  Lambert that same year as First Vice President and Money
Market Economist.  She was promoted to Managing Director of Drexel in 1986. From
April 1990 to August 1992,  Ms.  Ramirez was the President  and Chief  Executive
Officer of Maria Ramirez Capital Consultants, Inc., a subsidiary of John Hancock
Freedom Securities Corporation.  Ms. Ramirez established MFR in August 1992. She
is known in  international  financial,  banking  and  economic  circles  for her
assessment  of the  interaction  between  global  economic  policy and political
trends and their effect on  investments.  Ms.  Ramirez  holds a B.A. in Business
Administration/ Economics from Pace University.

HOW TO PURCHASE SHARES

     As discussed below,  shares of Corporate Bond,  Limited Maturity Bond, U.S.
Government,  Global  Aggressive  Bond,  High Yield and  Tax-Exempt  Funds may be
purchased with either a front-end or contingent deferred sales charge. Shares of
Cash Fund are  offered  by the Fund  without a sales  charge.  Each of the Funds
reserves  the right to  withdraw  all or any part of the  offering  made by this
prospectus and to reject purchase orders.
     As a convenience to investors and to save operating expenses,  the Funds do
not issue  certificates  for Fund  shares  except  upon  written  request by the
stockholder.

CORPORATE BOND, LIMITED MATURITY BOND, U.S. GOVERNMENT,  GLOBAL AGGRESSIVE BOND,
HIGH YIELD AND TAX-EXEMPT FUNDS

     Security Distributors, Inc. (the "Distributor"),  a wholly-owned subsidiary
of Security  Benefit Group,  Inc., is principal  underwriter for Corporate Bond,
Limited Maturity Bond, U.S.  Government,  Global Aggressive Bond, High Yield and
Tax-Exempt  Funds.  Shares of these Funds may be  purchased  through  authorized
investment  dealers.  In addition,  banks and other financial  institutions that
have an agreement with the  Distributor may make shares of these Funds available
to their  customers.  The minimum  initial  purchase must be $100 and subsequent
purchases  must be $100 unless made  through an  Accumulation  Plan which allows
subsequent purchases of $20.

     Orders for the purchase of shares of Corporate Bond, Limited Maturity Bond,
U.S. Government, Global Aggressive Bond, High Yield and Tax-Exempt Funds will be
confirmed  at an  offering  price  equal to the net asset  value per share  next
determined  after  receipt  of the  order  in  proper  form  by the  Distributor
(generally as of the close of the Exchange on that day) plus the sales charge in
the case of Class A shares.  Orders  received by dealers or other firms prior to
the close of the Exchange and received by the Distributor  prior to the close of
its business day will be  confirmed  at the offering  price  effective as of the
close of the Exchange on that day.

     Orders for shares received by  broker/dealers  prior to that day's close of
trading on the New York Stock Exchange and  transmitted to the Fund prior to its
close of  business  that day will  receive the  offering  price equal to the net
asset value per share  computed  at the close of trading on the

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SECURITY FUNDS
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Exchange on the same day plus, in the case of Class A shares,  the sales charge.
Orders  received  by  broker/dealers  after that  day's  close of trading on the
Exchange and  transmitted to the Fund prior to the close of business on the next
business day will receive the next business day's offering price.

ALTERNATIVE PURCHASE OPTIONS

     Corporate Bond, Limited Maturity Bond, U.S.  Government,  Global Aggressive
Bond, High Yield and Tax-Exempt Funds offer two classes of shares:

     CLASS A SHARES -  FRONT-END  LOAD  OPTION.  Class A shares  are sold with a
sales charge at the time of purchase.  Class A shares are not subject to a sales
charge  when  they  are  redeemed  (except  that  shares  sold in an  amount  of
$1,000,000  or more  without a  front-end  sales  charge  will be  subject  to a
contingent  deferred sales charge for one year.) See Appendix C on page 41 for a
discussion of possible reductions in the front-end sales charge.

     CLASS B SHARES - BACK-END  LOAD  OPTION.  Class B shares are sold without a
sales charge at the time of purchase, but are subject to a deferred sales charge
if they are redeemed  within five years of the date of purchase.  Class B shares
will automatically  convert tax-free to Class A shares at the end of eight years
after purchase.

     The decision as to which class is more beneficial to an investor depends on
the amount and intended length of the investment. Investors who would rather pay
the entire cost of distribution at the time of investment, rather than spreading
such cost over  time,  might  consider  Class A shares.  Other  investors  might
consider  Class B shares,  in which case 100  percent of the  purchase  price is
invested  immediately,  depending on the amount of the purchase and the intended
length of investment. The Funds will not normally accept any purchase of Class B
shares in the amount of $250,000 or more.

     Dealers or others receive  different  levels of  compensation  depending on
which class of shares they sell.

CLASS A SHARES

     Class A shares of Corporate Bond,  Limited Maturity Bond, U.S.  Government,
Global Aggressive Bond, High Yield and Tax-Exempt Funds are offered at net asset
value plus an initial sales charge as follows:

                                                 SALES CHARGE
                                 --------------------------------------------
  Amount of                       Applicable     Percentage of    Percentage
 Purchases at                    Percentage of    Net Amount      Reallowable
Offering Price                   Offering Price    Invested       to Dealers
- ------------------------------------------------------------------------------
Less than $50,000                    4.75%          4.99%            4.00%
$50,000 but less than $100,000       3.75%          3.90%            3.00%
$100,000 but less than $250,000      2.75%          2.83%            2.20%
$250,000 but less than $1,000,000    1.75%          1.78%            1.40%
$1,000,000 and over                  None           None          (See below)
- ------------------------------------------------------------------------------

     Purchases of Class A shares of the Corporate Bond,  Limited  Maturity Bond,
U.S.  Government,  Global  Aggressive  Bond, High Yield and Tax-Exempt  Funds in
amounts  of  $1,000,000  or more are made at net asset  value  (without  a sales
charge), but are subject to a contingent deferred sales charge of one percent in
the event of redemption within one year following purchase.  For a discussion of
the contingent  deferred sales charge, see "Calculation and Waiver of Contingent
Deferred Sales Charges" on page 27.

     The  Distributor  will pay a  commission  to dealers on such  purchases  of
$1,000,000 or more as follows: 1.00 percent on sales up to $5,000,000,  plus .50
percent on sales of $5,000,000 or more up to $10,000,000  and .10 percent on any
amount of $10,000,000 or more.

     The  Investment  Manager may, at its expense,  pay a service fee to dealers
who satisfy certain criteria  established by the Investment Manager from time to
time relating to the volume of their sales of Class A shares of Tax-Exempt  Fund
and certain other Security Funds during prior periods and certain other factors,
including  providing  certain  services to their clients who are stockholders of
such Funds.  Such services  include  assisting  stockholders in changing account
options  or  enrolling  in  specific  plans,  and  providing  stockholders  with
information regarding the Funds and related developments.

     Currently,  service fees are paid on the aggregate value of accounts opened
after July 31, 1990, in Security Tax-Exempt,  Equity, Asset Allocation,  Global,
Ultra and Growth and Income Funds at the following  annual rates: .25 percent of
aggregate  net asset value for amounts of $100,000  but less than $5 million and
 .30 percent for amounts of $5,000,000 or more.

SECURITY INCOME FUND'S CLASS A DISTRIBUTION PLAN

     In addition to the sales charge deducted from Class A shares at the time of
purchase, each of Corporate Bond, Limited Maturity Bond, U.S. Government, Global
Aggressive  Bond and High Yield Funds is authorized,  under a Distribution  Plan
pursuant  to Rule 12b-1 under the  Investment  Company Act of 1940 (the "Class A
Distribution Plan"), to use its assets to finance certain activities relating to
the  distribution of its shares to investors.  This Plan permits  payments to be
made by these Funds to the Distributor,  to finance various activities  relating
to the  distribution  of their

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Class A shares to  investors,  including,  but not  limited  to, the  payment of
compensation  (including incentive  compensation to securities dealers and other
financial institutions and organizations) to obtain various distribution-related
and/or administrative services for the Funds.

     Under the Class A  Distribution  Plan,  a  monthly  payment  is made to the
Distributor  in an amount  computed  at an  annual  rate of .25  percent  of the
average daily net asset value of Corporate  Bond,  Limited  Maturity Bond,  U.S.
Government,  Global  Aggressive  Bond and High Yield Funds' Class A shares.  The
distribution  fee is  charged to each Fund in  proportion  to the  relative  net
assets of their Class A shares.  The distribution  fees collected may be used by
Corporate Bond, Limited Maturity Bond, U.S.  Government,  Global Aggressive Bond
and High Yield Funds to finance joint distribution activities, for example joint
advertisements,  and the costs of such joint  activities will be allocated among
the Funds on a fair and equitable basis,  including on the basis of the relative
net assets of their Class A shares.

     The Class A Distribution  Plan authorizes  payment by the Class A shares of
these Funds of the cost of preparing, printing and distributing prospectuses and
Statements  of  Additional   Information   to   prospective   investors  and  of
implementing and operating the Plan.

     In addition,  compensation  to  securities  dealers and others is paid from
distribution  fees at an annual  rate of .25  percent of the  average  daily net
asset value of Class A shares sold by such dealers and remaining  outstanding on
the Fund's books to obtain certain administrative  services for the Funds' Class
A  stockholders.  The  services  include,  among other  things,  processing  new
stockholder   account   applications  and  serving  as  the  primary  source  of
information to customers in answering  questions  concerning the Funds and their
transactions  with the Funds.  The  Distributor is also  authorized to engage in
advertising,  the  preparation and  distribution  of sales  literature and other
promotional  activities on behalf of Corporate Bond, Limited Maturity Bond, U.S.
Government,  Global  Aggressive  Bond and High Yield  Funds.  Other  promotional
activities which may be financed  pursuant to the Plan include (i) informational
meetings  concerning  these Funds for registered  representatives  interested in
selling  shares of the Funds and (ii)  bonuses or  incentives  offered to all or
specified  dealers on the basis of sales of a specified minimum dollar amount of
Class A shares of these Funds by the registered representatives employed by such
dealer(s).  The expenses  associated with the foregoing  activities will include
travel expenses,  including lodging.  Additional  information may be obtained by
referring to the Funds' Statement of Additional Information.

     Corporate Bond, Limited Maturity Bond, U.S.  Government,  Global Aggressive
Bond and High Yield Funds' Class A  Distribution  Plan may be  terminated at any
time by vote of the directors of Income Fund, who are not interested  persons of
the Fund as defined in the 1940 Act or by vote of a majority of the  outstanding
Class A shares.  In the event the Class A Distribution Plan is terminated by the
Funds' Class A stockholders or the Board of Directors,  the payments made to the
Distributor  pursuant  to the  Plan up to that  time  would be  retained  by the
Distributor.  Any  expenses  incurred  by the  Distributor  in  excess  of those
payments would be absorbed by the Distributor.

CLASS B SHARES

     Class B shares of Corporate Bond,  Limited Maturity Bond, U.S.  Government,
Global Aggressive Bond, High Yield and Tax-Exempt Funds are offered at net asset
value, without an initial sales charge. With certain exceptions, these Funds may
impose a deferred sales charge on Class B shares  redeemed  within five years of
the date of purchase.  No deferred  sales charge is imposed on amounts  redeemed
thereafter.  If  imposed,  the  deferred  sales  charge  is  deducted  from  the
redemption proceeds otherwise payable.  The deferred sales charge is retained by
the Distributor.

     Whether a contingent deferred sales charge is imposed and the amount of the
charge will depend on the number of years since the stockholder  made a purchase
payment  from  which an amount is being  redeemed,  according  to the  following
schedule:

      YEAR SINCE         CONTINGENT DEFERRED
   PURCHASE WAS MADE         SALES CHARGE
      First                      5%
      Second                     4%
      Third                      3%
      Fourth                     3%
      Fifth                      2%
      Sixth and following        0%

     Class B  shares  (except  shares  purchased  through  the  reinvestment  of
dividends  and other  distributions  paid with  respect to Class B shares)  will
automatically  convert on the eighth  anniversary  of the date such  shares were
purchased to Class A shares which are subject to a lower  distribution fee. This
automatic  conversion of Class B shares will take place without  imposition of a
front-end  sales  charge  or  exchange  fee.   (Conversion  of  Class  B  shares
represented  by  stock  certificates  will  require  the  return  of  the  stock
certificates  to  the  Investment   Manager.)  All  shares   purchased   through
reinvestment of dividends and other  distributions  paid with respect to Class B
shares  ("reinvestment  shares")  will be  considered  to be held in a  separate
subaccount.  Each  time  any  Class  B  shares  (other  than  those  held in the
subaccount)  convert to Class A shares,  a pro rata portion of the  reinvestment
shares  held in the  subaccount  will also  convert  to Class A shares.  Class B
shares so converted  will no longer be subject to the higher  expenses  borne by

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Class B shares.  Because the net asset value per share of the Class A shares may
be  higher or lower  than that of the Class B shares at the time of  conversion,
although the dollar value will be the same,  a  stockholder  may receive more or
less Class A shares than the number of Class B shares  converted.  Under current
law, it is the Funds'  opinion  that such a  conversion  will not  constitute  a
taxable event under federal  income tax law. In the event that this ceases to be
the  case,  the  Board of  Directors  will  consider  what  action,  if any,  is
appropriate and in the best interests of the Class B stockholders.

CLASS B DISTRIBUTION PLAN

     Each of Corporate  Bond,  Limited  Maturity Bond, U.S.  Government,  Global
Aggressive  Bond,  High Yield and  Tax-Exempt  Funds  bears some of the costs of
selling its Class B shares under a Distribution Plan adopted with respect to its
Class B shares  ("Class B Distribution  Plan")  pursuant to Rule 12b-1 under the
Investment  Company Act of 1940 ("1940  Act").  Each  Fund's Plan  provides  for
payments at an annual rate of 1.00 percent of the average  daily net asset value
of its Class B shares.  Amounts  paid by the  Funds  are  currently  used to pay
dealers and other firms that make Class B shares  available  to their  customers
(1) a commission at the time of purchase  normally  equal to 4.00 percent of the
value of each  share  sold and (2) a service  fee  payable  for the first  year,
initially,  and for each year thereafter,  quarterly,  in an amount equal to .25
percent  annually of the average daily net asset value of Class B shares sold by
such  dealers  and other  firms and  remaining  outstanding  on the books of the
Funds.

     NASD  Rules  limit  the  aggregate  amount  that  each of the Funds may pay
annually  in  distribution  costs  for the sale of its  Class B  shares  to 6.25
percent of gross sales of Class B shares since the inception of the Distribution
Plan,  plus interest at the prime rate plus one percent on such amount (less any
contingent   deferred  sales  charges  paid  by  Class  B  stockholders  to  the
Distributor).  The  Distributor  intends,  but is not obligated,  to continue to
apply or accrue  distribution  charges  incurred in connection  with the Class B
Distribution Plan which exceed current annual payments  permitted to be received
by the Distributor from the Funds. The Distributor  intends to seek full payment
of such  charges from the Fund  (together  with annual  interest  thereon at the
prime  rate plus one  percent)  at such time in the future as, and to the extent
that, payment thereof by the Funds would be within permitted limits.

     Each Fund's Class B Distribution Plan may be terminated at any time by vote
of its  directors who are not  interested  persons of the Fund as defined in the
1940 Act or by vote of a  majority  of the  outstanding  Class B shares.  In the
event the Class B Distribution Plan is terminated by the Class B stockholders or
the Funds' Board of Directors,  the payments made to the Distributor pursuant to
the Plan up to that time would be  retained  by the  Distributor.  Any  expenses
incurred by the Distributor in excess of those payments would be absorbed by the
Distributor.  The Funds make no  payments in  connection  with the sale of their
Class B shares other than the distribution fee paid to the Distributor.

CALCULATION AND WAIVER OF CONTINGENT DEFERRED SALES CHARGES

     Any contingent  deferred  sales charge  imposed upon  redemption of Class A
shares  (purchased  in an amount of  $1,000,000 or more) and Class B shares is a
percentage  of the lesser of (1) the net asset  value of the shares  redeemed or
(2) the net cost of such shares. No contingent  deferred sales charge is imposed
upon redemption of amounts derived from (1) increases in the value above the net
cost of such  shares due to  increases  in the net asset  value per share of the
Fund; (2) shares acquired  through  reinvestment of income dividends and capital
gain distributions;  or (3) Class A shares (purchased in an amount of $1,000,000
or more)  held for more than one year or Class B shares  held for more than five
years.  Upon  request  for  redemption,  shares not  subject  to the  contingent
deferred  sales  charge  will be  redeemed  first.  Thereafter,  shares held the
longest will be the first to be redeemed.

     The contingent  deferred sales charge is waived: (1) following the death of
a stockholder  if  redemption is made within one year after death;  (2) upon the
disability  (as defined in Section  72(m)(7) of the Internal  Revenue Code) of a
stockholder  prior to age 65 if  redemption  is made  within  one year after the
disability,  provided such disability  occurred after the stockholder opened the
account; (3) in connection with required minimum distributions in the case of an
IRA,  SAR-SEP or Keogh or any other  retirement  plan  qualified  under  section
401(a),  401(k) or 403(b) of the Code; and (4) in the case of distributions from
retirement  plans  qualified  under  section  401(a) or  401(k) of the  Internal
Revenue  Code due to (i)  returns  of excess  contributions  to the  plan,  (ii)
retirement of a participant in the plan,  (iii) a loan from the plan  (repayment
of loans,  however,  will  constitute  new sales for purposes of  assessing  the
contingent deferred sales charge, (iv) "financial  hardship" of a participant in
the  plan,   as  that  term  is   defined   in   Treasury   Regulation   section
1.401(k)1(d)(2),  as amended from time to time, (v) termination of employment of
a participant in the plan, (vi) any other permissible withdrawal under the terms
of the plan.  The  contingent  deferred  sales charge will also be waived in the
case of  redemptions  of Class B shares of the Funds  pursuant  to a  systematic
withdrawal program. See "Systematic Withdrawal Program," page 34 for details.

ARRANGEMENTS WITH BROKER-DEALERS AND OTHERS

     The Distributor,  from time to time, will provide promotional incentives or
pay a bonus to certain dealers

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whose  representatives  have sold or are expected to sell significant amounts of
the Corporate Bond,  Limited Maturity Bond, U.S.  Government,  Global Aggressive
Bond, High Yield and Tax-Exempt  Funds and/or certain other Funds managed by the
Investment  Manager.  Such  promotional  incentives  will  include  payment  for
attendance  (including  travel and lodging  expenses) by  qualifying  registered
representatives  (and  members of their  families)  at sales  seminars at luxury
resorts  within or outside the United  States.  Bonus  compensation  may include
reallowance  of the entire  sales charge and may also  include,  with respect to
Class A shares,  an amount  which  exceeds the entire  sales  charge  and,  with
respect to Class B shares, an amount which exceeds the maximum  commission.  The
Distributor, or the Investment Manager, may also provide financial assistance to
certain dealers in connection with  conferences,  sales or training programs for
their employees,  seminars for the public, advertising,  sales campaigns, and/or
shareholder  services and programs regarding one or more of the funds managed by
the Investment Manager.  Certain of the promotional incentives or bonuses may be
financed by payments to the Distributor  under a Rule 12b-1  Distribution  Plan.
The payment of promotional  incentives  and/or bonuses will not change the price
an investor  will pay for shares or the amount that the Funds will  receive from
such sale. No compensation will be offered to the extent it is prohibited by the
laws of any state or self-regulatory agency, such as the National Association of
Securities  Dealers,  Inc.  ("NASD").  A Dealer to whom substantially the entire
sales charge on Class A shares is reallowed may be deemed to be an "underwriter"
under federal securities laws.

     The Distributor also may pay banks and other financial  services firms that
facilitate  transactions  in shares of the Funds for their clients a transaction
fee up to the level of the  payments  made  allowable to dealers for the sale of
such  shares as  described  above.  Banks  currently  are  prohibited  under the
Glass-Steagall Act from providing certain underwriting or distribution services.
If banking firms were prohibited from acting in any capacity or providing any of
the  described  services,  the Funds' Board of  Directors  would  consider  what
action, if any, would be appropriate.

     In  addition,  state  securities  laws on this  issue may  differ  from the
interpretations  of  federal  law  expressed  herein  and  banks  and  financial
institutions may be required to register as dealers pursuant to state law.

     The Investment Manager or Distributor also may pay a marketing allowance to
dealers who meet  certain  eligibility  criteria.  This  allowance  is paid with
reference to new sales of shares of Corporate Bond,  Limited Maturity Bond, U.S.
Government,  Global  Aggressive  Bond,  High  Yield  and  Tax-Exempt  Funds in a
calendar  year. To be eligible for this  allowance in any given year, the dealer
must sell a minimum  of  $2,000,000  of Class A and Class B shares  during  that
year.  The  marketing  allowance  ranges  from .15  percent  to .75  percent  of
aggregate  new sales  depending  upon the volume of shares sold.  See the Funds'
Statement of  Additional  Information  for more detailed  information  about the
marketing allowance.

CASH FUND

     Shares of Cash Fund are offered at net asset value next determined after an
order is  accepted.  There is no sales  charge  or  load.  The  minimum  initial
investment in Cash Fund is $100 for each account.  Subsequent investments may be
made in any amount of $20 or more. Cash Fund purchases may be made in any of the
following ways:

1.   BY MAIL

     (a) A check or negotiable bank draft should be sent to:
         Security Cash Fund
         P.O. Box 2548
         Topeka, Kansas 66601

     (b) Make check or draft payable to "SECURITY CASH FUND."

     (c) For initial investment include a completed investment application found
         on page 43 of this prospectus.

2.   BY WIRE

     (a) Call the Fund to advise  of the  investment.  The Fund  will  supply an
         account  number  at the  time of the  initial  investment  and  provide
         instructions for having your bank wire federal funds.

     (b) Wire federal funds to:
         Bank IV of Topeka
         Security Distributors, Inc.
         Topeka, Kansas 66603
         Include investor's name and the Cash Fund account number.

     (c) For initial investment,  send a completed investment application to the
         Fund at the above address.

3.   THROUGH BROKER/DEALERS

     Investors  may,  if they  wish,  invest in Cash Fund by  purchasing  shares
through  registered  broker/dealers.  Such  broker/dealers who process orders on
behalf of their customers may charge a fee for their services.  Investments made
directly without the assistance of a broker/dealer are without charge.

     Since Cash Fund invests in money market  securities which require immediate
payment in federal funds,  monies  received from the sales of its shares must be
monies held by a commercial bank and be on deposit at one of the Federal Reserve
Banks.  A record date for each  stockholder's  investment  is  established  each
business day and used to distribute  the following  day's  dividend.  If federal
funds are received prior to 2:00 p.m. (Central time) the investment will be made
on that day and the investor will receive the following day's dividend.  Federal
funds  received  after 2:00 p.m. on any business day will not be invested  until
the following  business day. The Fund will not be responsible  for

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any delays in the wire  transfer  system.  All checks  are  accepted  subject to
collection at full face value in United States funds and must be drawn in United
States dollars on a United States bank.

     The  Investment  Manager may, at its expense,  pay a service fee to dealers
who satisfy certain criteria  established by the Investment Manager from time to
time relating to the volume of their sales of Cash Fund during prior periods and
certain other factors, including providing certain services to their clients who
are stockholders of the Fund. Currently,  service fees are paid on the aggregate
value of Cash Fund accounts opened after July 31, 1990, at the following  annual
rate:  .25 percent of  aggregate  net asset value for amounts of  $1,000,000  or
more.

PURCHASES AT NET ASSET VALUE

     Class A  shares  of  Corporate  Bond,  Limited  Maturity  Bond  Fund,  U.S.
Government,  Global  Aggressive  Bond,  High Yield and  Tax-Exempt  Funds may be
purchased at net asset value by (1)  directors,  officers  and  employees of the
Funds, the Funds'  Investment  Manager or Distributor;  directors,  officers and
employees  of Security  Benefit  Life  Insurance  Company and its  subsidiaries;
agents licensed with Security Benefit Life Insurance  Company;  spouses or minor
children of any such  agents;  as well as the  following  relatives  of any such
directors,  officers and employees (and their spouses):  spouses,  grandparents,
parents, children,  grandchildren,  siblings, nieces and nephews; (2) any trust,
pension,  profit  sharing  or  other  benefit  plan  established  by  any of the
foregoing  corporations for persons  described above; (3) retirement plans where
third party  administrators of such plans have entered into certain arrangements
with the  Distributor or its  affiliates  provided that no commission is paid to
dealers;  and (4) officers,  directors,  partners or registered  representatives
(and their  spouses and minor  children)  of  broker/dealers  who have a selling
agreement with the Distributor.  Such sales are made upon the written  assurance
of the purchaser that the purchase is made for investment  purposes and that the
securities  will not be  transferred  or resold  except  through  redemption  or
repurchase by or on behalf of the Funds.

     Class A shares of Corporate Bond,  Limited Maturity Bond, U.S.  Government,
Global Aggressive Bond, High Yield and Tax-Exempt Funds may also be purchased at
net  asset  value  when  the  purchase  is made on the  recommendation  of (i) a
registered  investment  adviser,  trustee  or  financial  intermediary  who  has
authority  to make  investment  decisions on behalf of the  investor;  or (ii) a
certified  financial  planner or  registered  broker-dealer  who either  charges
periodic fees to its customers for financial  planning,  investment  advisory or
asset  management  services,  or provides such  services in connection  with the
establishment of an investment  account for which a comprehensive  "wrap fee" is
imposed. The Distributor must be notified when a purchase is made that qualifies
under this provision.

TRADING PRACTICES AND BROKERAGE

     The portfolio  turnover rate for the Corporate  Bond,  U.S.  Government and
Tax-Exempt Funds, respectively, for the fiscal year ended December 31, 1995, was
as  follows:  Corporate  Bond  Fund - 200  percent;  U.S.  Government  Fund - 81
percent;  and Tax-Exempt Fund - 103 percent.  The annualized  portfolio turnover
rate for the Limited Maturity Bond Fund for the period January 17, 1995 (date of
inception)  to December 31, 1995,  and the Global  Aggressive  Bond Fund for the
period June 1, 1995 (date of  inception)  to December 31, 1995,  was as follows:
Limited  Maturity Bond - 4 percent;  and Global  Aggressive  Bond - 127 percent.
Portfolio  turnover  information is not yet available for the High Yield Fund as
it did not begin operations until August of 1996. The Corporate Bond and Limited
Maturity Bond Funds'  portfolio  turnover rate  generally is expected to be less
than 100 percent,  and that of the U.S.  Government and Global  Aggressive  Bond
Funds may exceed  100  percent,  but is not  expected  to do so.  The  portfolio
turnover rate for the High Yield Fund may exceed 100 percent but it is generally
not expected to exceed 150 percent. Higher portfolio turnover subjects a fund to
increased  brokerage costs and may, in some cases, have adverse tax effects on a
fund or its stockholders.

     Cash Fund is expected  to have a high  portfolio  turnover  rate due to the
short maturities of its portfolio securities;  this should not, however,  affect
the  Fund's  income or net  asset  value  since  brokerage  commissions  are not
normally  paid  in  connection  with  the  purchase  or  sale  of  money  market
instruments.

     Transactions  in portfolio  securities are effected in the manner deemed to
be in the best  interests  of each  Fund.  In  selecting  a broker  or dealer to
execute  a  specific  transaction,  all  relevant  factors  will be  considered.
Portfolio  transactions  may be  directed  to  brokers  who  furnish  investment
information or research services to the Investment Manager or who sell shares of
the Funds.  The Investment  Manager may,  consistent with the NASD Rules of Fair
Practice, consider sales of shares of the Fund in the selection of a broker.

     Securities held by the Funds may also be held by other investment  advisory
clients of the Investment Manager,  including other investment companies, and by
the Investment Manager's parent company, Security Benefit Life Insurance Company
("SBL").  Purchases  or  sales of the same  security  occurring  on the same day
(which may include  orders from SBL) may be aggregated  and executed as a single
transaction,  subject  to the  Investment  Manager's  obligation  to  seek  best
execution.  Aggregated  purchases or

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sales  are  generally  effected  at an  average  price  and on a pro rata  basis
(transaction costs will also be shared on a pro rata basis) in proportion to the
amounts desired to be purchased or sold. See the Funds'  Statement of Additional
Information for a more detailed description of aggregated transactions.

HOW TO REDEEM SHARES

     A  stockholder  may redeem  shares at the net asset  value next  determined
after the time when such shares are tendered for redemption.

     Shares will be redeemed on request of the  stockholder  in proper  order to
the Funds' Investment Manager, Security Management Company, LLC, which serves as
the Funds'  transfer  agent. A request is made in proper order by submitting the
following items to the Investment Manager:  (1) a written request for redemption
signed by all registered owners exactly as the account is registered,  including
fiduciary  titles,  if any,  and  specifying  the account  number and the dollar
amount or number of shares to be redeemed;  (2) a guarantee of all signatures on
the written request or on the share certificate or accompanying stock power; (3)
any share certificates issued for any of the shares to be redeemed;  and (4) any
additional  documents  which  may be  required  by the  Investment  Manager  for
redemption by corporations or other  organizations,  executors,  administrators,
trustees,  custodians  or the like.  Transfers of shares are subject to the same
requirements.  The signature guarantee must be provided by an eligible guarantor
institution,  such as a bank, broker, credit union, national securities exchange
or savings association. A signature guarantee is not required for redemptions of
$10,000 or less,  requested by and payable to all  stockholders of record for an
account,  to be sent to the address of record.  The Investment  Manager reserves
the right to reject any signature  guarantee  pursuant to its written procedures
which may be revised in the future.  To avoid delay in  redemption  or transfer,
stockholders  having questions should contact the Investment  Manager by calling
1-800-888-2461, extension 3127.

     The  redemption  price  will be the net  asset  value  of the  shares  next
computed  after the  redemption  request  in  proper  order is  received  by the
Investment  Manager.  In  addition,  stockholders  of Cash Fund will receive any
undistributed  dividends,  including  any  dividend  declared  on the day of the
redemption.  Payment  of the  amount  due on  redemption,  less  any  applicable
deferred sales charge,  will be made by check, or by wire at the sole discretion
of the  Investment  Manager,  within seven days after receipt of the  redemption
request in proper order. If a wire transfer is requested, the Investment Manager
must be provided with the name and address of the stockholder's  bank as well as
the account number to which payment is to be wired. Checks will be mailed to the
stockholder's registered address (or as otherwise directed).  Remittance by wire
(to a commercial bank account in the same name(s) as the shares are registered),
by certified or cashier's check, or by express mail, if requested,  will be at a
charge of $15, which will be deducted from the redemption proceeds.

     Cash Fund offers  redemption by check and Corporate Bond,  Limited Maturity
Bond, U.S.  Government and Tax-Exempt Funds offer redemption by check on Class A
shares  only.  The  Global  Aggressive  Bond Fund and the High Yield Fund do not
offer  checkwriting  privileges.  If blank checks are  requested on the Checking
Privilege Request Form, the Fund will make a supply  available.  Such checks for
Corporate Bond, Limited Maturity Bond, U.S.  Government and Tax-Exempt Funds may
be drawn  payable  to the order of any payee (not to cash) in any amount of $250
or more, if the account  value is $1,000 or more.  Such checks for Cash Fund may
be drawn in any amount of $100 or more.  When a check is  presented  to the Fund
for payment,  it will redeem  sufficient full and fractional shares to cover the
check.  Such  shares will be  redeemed  at the price next  calculated  following
receipt of any check which does not exceed the value of the  account.  The price
of  Fund  shares  fluctuates  from  day-to-day  and  the  price  at the  time of
redemption,  by check  or  otherwise,  may be less  than  the  amount  invested.
Redemption by check is not available if any shares are held in certificate  form
or if shares  being  redeemed  have not been on the Fund's books for at least 15
days.  The  availability  of  checkwriting  privileges  may  encourage  multiple
redemptions on an account.  Whenever multiple  redemptions occur, the difficulty
of monitoring the shareholder's cost basis in his or her investment increases.

     In addition to the foregoing  redemption  procedures,  the Funds repurchase
shares from  broker/dealers  at the price determined as of the close of business
on the day such  offer is  confirmed.  Dealers  may charge a  commission  on the
repurchase of shares.

     At  various  times,  requests  may be made to redeem  shares for which good
payment has not yet been received.  Accordingly,  payment of redemption proceeds
may be  delayed  until  such time as good  payment  has been  collected  for the
purchase  of the  shares  in  question,  which  may take up to 15 days  from the
purchase date.

     Requests  may also be made to  redeem  shares in an  account  for which the
stockholder's  tax  identification  number has not been provided.  To the extent
permitted by law, the  redemption  proceeds from such an account will be reduced
by $50 to reimburse for the penalty imposed by the Internal  Revenue Service for
failure to report the tax identification number.

TELEPHONE REDEMPTIONS

     Stockholders may redeem  uncertificated  shares in amounts up to $10,000 by
telephone  request,  provided that the  stockholder  has completed the Telephone
Redemption  section of the application or a Telephone  Redemption form

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which may be obtained from the Investment  Manager.  The proceeds of a telephone
redemption will be sent to the stockholder at his or her address as set forth in
the  application  or in a  subsequent  written  authorization  with a  signature
guarantee.  Once  authorization has been received by the Investment  Manager,  a
stockholder may redeem shares by calling the Funds at (800) 888-2461,  extension
3127, on weekdays (except holidays) between the hours of 7:00 a.m. and 6:00 p.m.
Central time.  Redemption  requests received by telephone after the close of the
New York Stock  Exchange  (normally 3 p.m.  Central  time) will be treated as if
received  on the next  business  day. A  stockholder  who  authorizes  telephone
redemptions  authorizes the Investment  Manager to act upon the  instructions of
any person  identifying  themselves  as the owner of the  account or the owner's
broker.  The  Investment  Manager has  established  procedures  to confirm  that
instructions  communicated  by telephone  are genuine and will be liable for any
losses due to fraudulent or unauthorized instructions if it fails to comply with
its  procedures.  The Investment  Manager's  procedures  require that any person
requesting a telephone  redemption  provide the account  registration and number
and the  owner's  tax  identification  number,  and  such  instructions  must be
received on a recorded line. Neither the Fund, the Investment  Manager,  nor the
Distributor shall be liable for any loss, liability, cost or expense arising out
of any telephone  redemption  request,  provided the Investment Manager complied
with its procedures.  Thus, a stockholder who authorizes  telephone  redemptions
may  bear  the risk of loss  from a  fraudulent  or  unauthorized  request.  The
telephone redemption privilege may be changed or discontinued at any time by the
Investment Manager or the Funds.

     During  periods  of  severe  market  or  economic   conditions,   telephone
redemptions  may  be  difficult  to  implement  and  stockholders   should  make
redemptions by mail as described in "How to Redeem Shares" on page 29.

DIVIDENDS AND TAXES

     It is the policy of Corporate Bond, Limited Maturity Bond, U.S. Government,
High Yield and  Tax-Exempt  Funds to pay dividends  from net  investment  income
monthly  and for the  Global  Aggressive  Bond  Fund to pay  dividends  from net
investment  income  quarterly.  It is the  policy  of  Corporate  Bond,  Limited
Maturity  Bond,  U.S.  Government,   Global  Aggressive  Bond,  High  Yield  and
Tax-Exempt Funds to distribute  realized capital gains (if any) in excess of any
capital losses and capital loss carryovers,  at least once a year. Because Class
A shares of Corporate  Bond,  Limited  Maturity Bond,  U.S.  Government,  Global
Aggressive  Bond,  High  Yield and  Tax-Exempt  Funds  bear most of the costs of
distribution of such shares through  payment of a front-end sales charge,  while
Class B shares of these Funds bear such costs through a higher distribution fee,
expenses  attributable  to Class B shares,  generally,  will be higher  and as a
result,  income distributions paid by these Funds with respect to Class B shares
generally will be lower than those paid with respect to Class A shares. Any such
dividend payment or capital gains  distribution will result in a decrease of the
net asset value of the shares in an amount equal to the payment or distribution.
All dividends and distributions are automatically reinvested on the payable date
in shares of the Funds at net asset value as of the record  date  (reduced by an
amount  equal  to the  amount  of  the  dividend  or  distribution)  unless  the
Investment  Manager is previously  notified in writing by the  stockholder  that
such dividends or  distributions  are to be received in cash. A stockholder  may
also request that such dividends or distributions  be directly  deposited to the
stockholder's  bank  account.  Dividends or  distributions  paid with respect to
Class A shares and received in cash may,  within 30 days of the payment date, be
reinvested without a sales charge.

     Each of Corporate  Bond,  Limited  Maturity Bond, U.S.  Government,  Global
Aggressive  Bond and High Yield Funds (series of Income Fund),  is to be treated
separately in determining the amounts of income and capital gains distributions.
For this  purpose,  each series will reflect  only the income and gains,  net of
losses, of that series.

     Certain requirements relating to the qualification of a Fund as a regulated
investment  company  may limit the extent to which a Fund will be able to engage
in certain  investment  practices,  including  transactions in options,  futures
contracts,   forwards,   swaps  and  other   types  of   derivative   securities
transactions.  In  addition,  if a Fund were  unable  to  dispose  of  portfolio
securities due to settlement  problems relating to foreign investments or due to
the holding of illiquid securities, the Fund's ability to qualify as a regulated
investment company might be affected.

     Cash Fund's policy is to declare  daily  dividends of all of its net income
each day the Fund is open for  business,  increased or decreased by any realized
capital  gains  or  losses.   Such  dividends  are  automatically   credited  to
stockholder  accounts.  Unless  stockholders  elect to receive  cash,  they will
receive such  dividends in  additional  shares on the last  business day of each
month at the net asset  value on that  date.  If cash  payment of  dividends  is
desired,  investors may so indicate in the appropriate  section of the Cash Fund
application  and  checks  will be mailed  within  five  business  days after the
beginning  of the  month.  Confirmation  of  Cash  Fund  dividends  will be sent
quarterly,  and confirmations of purchases and redemptions will be sent monthly.
The  amount  of  dividends  may  fluctuate  from  day to day.  If on any day net
realized or unrealized losses on portfolio  securities exceed Cash Fund's income
for that day and results in a decline of net asset value per share below  $1.00,
the  dividend  for that day will be omitted  until the net asset value per share
subsequently returns to $1.00 per share.

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SECURITY FUNDS
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================================================================================

     The Funds will not pay dividends or  distributions of less than $25 in cash
but will automatically reinvest them.

     Each of the Funds  intends to qualify as a "regulated  investment  company"
under the  Internal  Revenue  Code.  Such  qualification  generally  removes the
liability for federal  income taxes from the Fund,  and makes federal income tax
upon  income and  capital  gains  generated  by a Fund's  investments,  the sole
responsibility of its stockholders provided the Fund continues to so qualify and
distributes  all of its net investment  income and net realized  capital gain to
its stockholders. Furthermore, the Funds generally will not be subject to excise
taxes imposed on certain regulated  investment companies provided that each Fund
distributes 98 percent of its ordinary  income and 98 percent of its net capital
gain income each year.

     Tax-Exempt  Fund intends to qualify to pay "exempt  interest  dividends" to
its stockholders.  Tax-Exempt Fund will be so qualified if, at the close of each
quarter  of its  taxable  year,  at least 50  percent  of the value of its total
assets  consists of  securities  on which the interest  payments are exempt from
federal  tax. To the extent that  Tax-Exempt  Fund's  dividends  distributed  to
stockholders  are derived from  earnings on interest  income exempt from federal
tax and are designated as "exempt-interest  dividends" by the Fund, they will be
excludable  from a  stockholder's  gross income for federal income tax purposes.
The Fund will  inform  stockholders  annually  as to the  portion of that year's
distributions  from the Fund which constituted  "exempt-interest  dividends." To
the extent that  Tax-Exempt  Fund's  dividends  are derived from interest on its
temporary taxable  investments or from an excess of net short-term  capital gain
over net long-term capital loss, they are considered taxable ordinary income for
federal   income  tax   purposes.   Such   dividends  do  not  qualify  for  the
dividends-received deduction for corporations. Distributions by Tax-Exempt Fund,
if any,  of net  long-term  capital  gains in excess of net  short-term  capital
losses from the sale of  securities  are taxable to  stockholders  as  long-term
capital gain  regardless  of the length of time the  stockholder  has owned Fund
shares. Furthermore, a loss realized by a stockholder on the redemption, sale or
exchange  of shares of  Tax-Exempt  Fund with  respect to which  exempt-interest
dividends  have been paid will be disallowed to the extent of the amount of such
exempt-interest  dividends if such shares have been held by the  stockholder for
six months or less.

     Distributions of net investment income and realized net short-term  capital
gain  by  Corporate  Bond,  Limited  Maturity  Bond,  U.S.  Government,   Global
Aggressive  Bond,  High Yield and Cash  Funds are  taxable  to  stockholders  as
ordinary  income  whether  received in cash or reinvested in additional  shares.
Distributions  (designated  by  Corporate  Bond,  Limited  Maturity  Bond,  U.S.
Government,  Global  Aggressive  Bond and High  Yield  Funds  as  "capital  gain
dividends")  of the excess,  if any,  of net  long-term  capital  gains over net
short-term  capital losses are taxable to stockholders as long-term capital gain
regardless of how long a stockholder  has held the Fund's shares and  regardless
of whether received in cash or reinvested in additional shares.  Since Cash Fund
normally will not invest in securities  having a maturity of more than one year,
it should not realize any long-term capital gains or losses.

     At  December  31,  1995,   Corporate  Bond,  Limited  Maturity  Bond,  U.S.
Government,  Global  Aggressive  Bond and Tax-Exempt  Funds,  respectively,  had
accumulated  net  realized  losses  on sales  of  investments  in the  following
amounts: $11,009,916, $23,055, $1,161,323, $2,410 and $1,534,211.

     Certain dividends  declared in October,  November or December of a calendar
year are taxable to  stockholders as though received on December 31 of that year
if paid to stockholders during January of the following calendar year.

     Advice  as  to  each  year's  taxable  dividends  and   distributions,   if
applicable,  will be mailed  on or  before  January  31 of the  following  year.
Stockholders  should  consult  their tax  adviser  to  determine  the  effect of
federal,  state and local tax  consequences  to them from an  investment  in the
Funds.

     The Funds are  required by law to withhold 31 percent of taxable  dividends
and  distributions  (including  redemption  proceeds) to stockholders who do not
furnish their correct taxpayer  identification numbers, or are otherwise subject
to the backup withholding provisions of the Internal Revenue Code.

FOREIGN TAXES

     Investment  income and gains received from sources within foreign countries
may be subject to foreign  income and other taxes.  In this regard,  withholding
tax rates in countries  with which the United  States does not have a tax treaty
are often as high as 30 percent or more.  The United States has entered into tax
treaties  with many  foreign  countries  which  entitle  certain  investors to a
reduced tax rate  (generally ten to fifteen  percent) or to exemptions from tax.
If  applicable,  the Funds will  operate so as to qualify  for such  reduced tax
rates or tax exemptions whenever possible.  While stockholders of the Funds will
indirectly bear the cost of any foreign tax  withholding,  they will not be able
to claim foreign tax credit or deduction for taxes paid by the Funds.

DETERMINATION OF NET ASSET VALUE

     The net asset value per share of each Fund is determined as of the close of
regular  trading hours on the New York Stock Exchange  (normally 3 p.m.  Central
time) on each day that the Exchange is open for trading.  The

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

determination is made by dividing the value of the portfolio  securities of each
Fund  plus any cash or other  assets,  less all  liabilities,  by the  number of
shares outstanding of the Fund.

     Securities which are listed or traded on a national securities exchange are
valued at the last sale price.  If there are no sales on a particular  day, then
the securities are valued at the last bid price.  All other securities for which
market  quotations  are  readily  available  are valued on the basis of the last
current bid price.  If there is no bid price or if the bid price is deemed to be
unsatisfactory by the Board of Directors or by the Investment Manager,  then the
securities  are  valued in good faith by such  method as the Board of  Directors
determines will reflect the fair market value.

     Valuations  of Tax-Exempt  Fund's  municipal  securities  are supplied by a
pricing service approved by the Board of Directors.  Valuations furnished by the
pricing service are based upon appraisals from recognized  municipal  securities
dealers derived from information  concerning market transactions and quotations.
Securities  for which market  quotations  are not readily  available  (which are
expected to constitute the majority of Tax-Exempt  Fund's portfolio  securities)
are valued by the pricing service  considering  such factors as yields or prices
of municipal bonds of comparable quality,  type of issue,  coupon,  maturity and
rating, indications as to value from dealers, and general market conditions. The
Fund's officers,  under the general supervision of its Board of Directors,  will
regularly  review  procedures  used by, and valuations  provided by, the pricing
service.

     U.S. Government Fund values U.S. Government  securities at market value, if
available.  If  market  quotations  are  not  available,  the  Fund  will  value
securities,  other than securities with 60 days or less to maturity as discussed
below, at fair prices based on market quotations for securities of similar type,
yield, quality and duration.

     The  securities  held by Cash Fund are valued on the basis of the amortized
cost valuation  technique which does not take into account  unrealized  gains or
losses. The amortized cost valuation technique involves valuing an instrument at
its cost and  thereafter  assuming a constant  amortization  to  maturity of any
discount or premium,  regardless of the impact of fluctuating  interest rates on
the market value of the instrument.  A similar procedure may be used for valuing
securities  held by the U.S.  Government and Tax-Exempt  Funds having 60 days or
less remaining to maturity, with the value of the security on the 61st day being
used rather than cost.

     Because  the  expenses  of  distribution  are  borne by  Class A shares  of
Corporate Bond, Limited Maturity Bond, U.S. Government,  Global Aggressive Bond,
High Yield and Tax-Exempt  Funds through a front-end sales charge and by Class B
shares  of  such  Funds  through  an  ongoing  distribution  fee,  the  expenses
attributable  to each class of shares will differ,  resulting  in different  net
asset values. The net asset value of Class B shares will generally be lower than
the net  asset  value of Class A shares  as a  result  of the  distribution  fee
charged to Class B shares. It is expected, however, that the net asset value per
share will tend to converge  immediately  after the payment of  dividends  which
will  differ in amount for Class A and B shares by  approximately  the amount of
the different distribution expenses attributable to Class A and B shares.

PERFORMANCE

     The  Funds  may,   from  time  to  time,   include   performance   data  in
advertisements  or  reports  to  stockholders  or  prospective  investors.  Such
performance  data may  include  quotations  of  "yield"  for each of the  Funds,
"effective yield" for Cash Fund,  "taxable-equivalent yield" for Tax-Exempt Fund
and "average  annual total  return" and  "aggregate  total return" for Corporate
Bond, Limited Maturity Bond, U.S. Government, Global Aggressive Bond, High Yield
and Tax-Exempt Funds.

     For Cash Fund,  yield is calculated by measuring the income  generated by a
hypothetical investment in the Fund over a seven-day period. This income is then
annualized  by assuming that the amount of income  generated  over the seven-day
period is generated each week over a 52-week period and is shown as a percentage
of the investment.

     Cash  Fund's  effective  yield  will  be  calculated  similarly  but,  when
annualized,  income  earned  by an  investment  in the  Fund  is  assumed  to be
reinvested.  The effective  yield will be slightly higher than the yield because
of the compounding effect of this assumed reinvestment.

     With respect to Corporate Bond,  Limited  Maturity Bond,  U.S.  Government,
Global Aggressive Bond, High Yield and Tax-Exempt  Funds,  yield is based on the
investment  income per share earned during a particular 30-day period (including
dividends  and  interest),   less  expenses  accrued  during  the  period  ("net
investment income"),  and will be computed by dividing net investment income per
share by the  maximum  public  offering  price  per share on the last day of the
period.

     Tax-Exempt Fund's  taxable-equivalent yield begins with that portion of the
Fund's yield which is tax-exempt (determined using the same general formula used
to calculate  yield),  which is then adjusted by an amount necessary to give the
taxable yield  equivalent to the  tax-exempt  yield at a stated income tax rate,
and added to that portion of the Fund's yield, if any, which is not tax-exempt.

     Average  annual  total  return  will be  expressed  in terms of the average
annual compounded rate of return of a hypothetical investment in Corporate Bond,
Limited Maturity Bond, U.S.  Government,  Global  Aggressive Bond, High Yield or
Tax-Exempt  Fund over periods of one,  five and ten years (up to the life of the
Fund).  Such average  annual total return  figures will reflect the deduction of
the

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SECURITY FUNDS
PROSPECTUS
================================================================================

maximum  sales  charge and a  proportional  share of Fund  expenses on an annual
basis, and will assume that all dividends and  distributions are reinvested when
paid.

     Aggregate  total  return will be  calculated  for any  specified  period by
assuming a hypothetical  investment in Corporate  Bond,  Limited  Maturity Bond,
U.S.  Government,  Global  Aggressive Bond, High Yield or Tax-Exempt Fund on the
date of the  commencement  of the period and  assuming  that all  dividends  and
distributions  are  reinvested  when paid.  The net  increase or decrease in the
value of the investment  over the period will be divided by its beginning  value
to arrive at aggregate total return.

     In addition,  total return may also be calculated  for several  consecutive
one-year  periods,  expressing  the total  return as a  percentage  increase  or
decrease  in the value of the  investment  for each year  relative to the ending
value for the  previous  year.  Corporate  Bond,  Limited  Maturity  Bond,  U.S.
Government,  Global  Aggressive  Bond, High Yield and Tax-Exempt  Funds may from
time to  time  quote  total  return  that  does  not  reflect  deduction  of any
applicable  sales charge,  which charges,  if reflected,  would reduce the total
return quoted.

     Quotations of  performance  reflect only the  performance of a hypothetical
investment in a Fund during the particular time period on which the calculations
are based.  Such  quotations  for the Funds will vary based on changes in market
conditions  and the level of the Fund's  expenses,  and no reported  performance
figure should be considered an indication of  performance  which may be expected
in the future.

     In connection  with  communicating  performance  to current or  prospective
stockholders,  the Funds also may compare  these figures to the  performance  of
other mutual  funds  tracked by mutual fund rating  services or other  unmanaged
indexes which may assume  reinvestment of dividends but generally do not reflect
deductions for administrative and management costs and expenses. Corporate Bond,
Limited Maturity Bond, U.S.  Government,  Global Aggressive Bond, High Yield and
Tax-Exempt  Funds  will  include  performance  data for both Class A and Class B
shares of the Funds in any advertisement or report including performance data of
the Fund.

     For  a  more  detailed   description  of  the  methods  used  to  calculate
performance, see the Funds' Statement of Additional Information.

STOCKHOLDER SERVICES

ACCUMULATION PLAN

     An investor in Corporate  Bond,  Limited  Maturity Bond,  U.S.  Government,
Global  Aggressive  Bond,  High Yield or  Tax-Exempt  Fund may choose to begin a
voluntary  Accumulation  Plan.  This  allows for an initial  investment  of $100
minimum and subsequent  investments of $20 minimum at any time. An  Accumulation
Plan involves no obligation  to make periodic  investments  and is terminable at
will.

     Payments are made by sending a check to the  Distributor  who (acting as an
agent for the dealer) will purchase whole and  fractional  Fund shares as of the
close of business  on such day as the payment is  received.  The  investor  will
receive a confirmation and statement after each investment. Investors may choose
to use  "Secur-O-Matic"  (automatic  bank  draft) to make their Fund  purchases.
There is no additional charge for choosing to use Secur-O-Matic.  An application
may be obtained by writing Security Distributors,  Inc., 700 SW Harrison Street,
Topeka,  Kansas  66636-0001  or by calling  (913)  295-3127  or (800)  888-2461,
extension 3127.

SYSTEMATIC WITHDRAWAL PROGRAM

     Stockholders  who  wish to  receive  regular  payments  of $25 or more  may
establish a Systematic Withdrawal Program.  Liquidation in this manner will only
be  allowed  if  shares  with a  current  offering  price of  $5,000 or more are
deposited  with  the  Investment  Manager,  which  will  act as  agent  for  the
stockholder under the program.  Payments are available on a monthly,  quarterly,
semiannual  or annual  basis.  Shares are  liquidated  at net asset  value.  The
stockholder will receive a confirmation following each transaction.  The program
may be terminated on written notice,  or it will terminate  automatically if all
shares are liquidated or withdrawn from the account.

     A stockholder may establish a Systematic Withdrawal Program with respect to
Class B shares  without the  imposition of any  applicable  contingent  deferred
sales charge,  provided  that such  withdrawals  do not in any 12-month  period,
beginning on the date the Program is established, exceed 10 percent of the value
of the account on that date ("Free  Systematic  Withdrawals").  Free  Systematic
Withdrawals are not available if a Program  established  with respect to Class B
shares  provides  for  withdrawals  in excess of 10  percent of the value of the
account in any  Program  year and,  as a result,  all  withdrawals  under such a
Program would be subject to any  applicable  contingent  deferred  sales charge.
Free  Systematic  Withdrawals  will be made first by redeeming those shares that
are not subject to the  contingent  deferred  sales charge and then by redeeming
shares held the longest.  The contingent  deferred sales charge  applicable to a
redemption of Class B shares  requested  while Free  Systematic  Withdrawals are
being made will be  calculated  as described  under  "Calculation  and Waiver of
Contingent Deferred Sales Charges," page 27. A Systematic Withdrawal form may be
obtained from the Funds.

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EXCHANGE PRIVILEGE

     Stockholders  who own  shares of the Funds may  exchange  those  shares for
shares of another of the Funds,  Security  Growth and  Income,  Equity,  Global,
Asset  Allocation  or Ultra  Funds.  Exchanges  may be made only in those states
where shares of the fund into which an exchange is to be made are  qualified for
sale. No service fee is presently imposed on such an exchange. Class A and Class
B  shares  of the  Funds  may be  exchanged  for  Class A and  Class  B  shares,
respectively,  of another fund or for shares of Cash Fund, which offers a single
class of  shares.  Any  applicable  contingent  deferred  sales  charge  will be
calculated  from the date of the  initial  purchase  without  regard to the time
shares were held in Cash Fund.

     For tax  purposes,  an exchange  is a sale of shares  which may result in a
taxable gain or loss. Special rules may apply to determine the amount of gain or
loss on an exchange occurring within ninety days after the exchanged shares were
acquired.

     Exchanges of Class A shares from  Corporate  Bond,  Limited  Maturity Bond,
U.S.  Government,  Global  Aggressive  Bond, High Yield and Tax-Exempt Funds are
made at net asset value without a front-end  sales charge if (1) the shares have
been owned for not less than 90 consecutive days prior to the exchange,  (2) the
shares were  acquired  pursuant to a prior  exchange  from a Security Fund which
assessed  a sales  charge  on the  original  purchase,  or (3) the  shares  were
acquired  as a  result  of  the  reinvestment  of  dividends  or  capital  gains
distributions. Exchanges of Class A shares from Corporate Bond, Limited Maturity
Bond, U.S. Government,  Global Aggressive Bond, High Yield and Tax-Exempt Funds,
other than those  described  above,  are made at net asset  value plus the sales
charge  described in the prospectus of the other  Security Fund being  acquired,
less the sales  charge paid on the shares of these Funds at the time of original
purchase.

     Because  Cash  Fund  does  not  impose  a sales  charge  or  commission  in
connection  with sales of its shares,  any exchange of Cash Fund shares acquired
through  direct  purchase  or  reinvestment  of  dividends  will be based on the
respective  net asset  values of the shares  involved and a sales charge will be
imposed equal to the sales charge that would be charged such  stockholder  if he
or she were purchasing for cash.

     Stockholders should contact the Fund before requesting an exchange in order
to  ascertain  whether  any sales  charges  are  applicable  to the shares to be
exchanged.  In effecting the exchanges of Fund shares,  the  Investment  Manager
will first cause to be exchanged  those shares which would not be subject to any
sales charges.

     Exchanges  are  made  upon  receipt  of  a  properly   completed   Exchange
Authorization form. This privilege may be changed or discontinued at any time at
the  discretion  of  the  management  of the  Funds  upon  60  days'  notice  to
stockholders.  A current  prospectus  of the fund into which an exchange is made
will be given to each stockholder exercising this privilege.

EXCHANGE BY TELEPHONE

     To  exchange  shares  by  telephone,  a  stockholder  must  hold  shares in
non-certificate  form and must  either have  completed  the  Telephone  Exchange
section of the application or a Telephone Transfer  Authorization form which may
be obtained from the Investment Manager. Once authorization has been received by
the  Investment  Manager,  a  stockholder  may  exchange  shares by telephone by
calling  the  Funds at (800)  888-2461,  extension  3127,  on  weekdays  (except
holidays)  between the hours of 7:00 a.m. and 6:00 p.m.  Central time.  Exchange
requests  received by telephone  after the close of the New York Stock  Exchange
(normally  3 p.m.  Central  time)  will be treated  as if  received  on the next
business day.

     A stockholder who authorizes  telephone exchanges authorizes the Investment
Manager to act upon the  instructions  of any person by  telephone  to  exchange
shares between any identically  registered accounts with the Funds listed above.
The Investment  Manager has established  procedures to confirm that instructions
communicated  by telephone  are genuine and will be liable for any losses due to
fraudulent  or  unauthorized  instructions  if  it  fails  to  comply  with  its
procedures.   The  Investment  Manager's  procedures  require  that  any  person
requesting an exchange by telephone provide the account  registration and number
and the owner's tax identification number and such instructions must be received
on a recorded line. Neither the Fund, the Investment Manager nor the Distributor
will be liable  for any loss,  liability,  cost or  expense  arising  out of any
request,  including any  fraudulent  request,  provided the  Investment  Manager
complied with its  procedures.  Thus, a  stockholder  who  authorizes  telephone
exchanges may bear the risk of loss from a fraudulent or unauthorized request.

     In periods of severe market or economic conditions,  the telephone exchange
of shares may be difficult to implement and  stockholders  should make exchanges
by writing to Security  Distributors,  Inc., 700 Harrison Street, Topeka, Kansas
66636-0001.  The telephone  exchange privilege may be changed or discontinued at
any time at the discretion of the management of the Funds.

RETIREMENT PLANS

     The Funds have available  tax-qualified  retirement  plans for individuals,
prototype  plans for the  self-employed,  pension and profit  sharing  plans for
corporations  and custodial  accounts for employees of public school systems and
organizations  meeting the  requirements  of Section  501(c)(3)  of the Internal
Revenue Code.  Further  information  concerning  these plans is contained in the
Funds' Statement of Additional Information.

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GENERAL INFORMATION

ORGANIZATION

     The Articles of  Incorporation  of Income and Tax-Exempt  Funds provide for
the issuance of an  indefinite  number of shares of capital stock in one or more
classes or series,  and the Articles of  Incorporation  of Cash Fund provide for
the issuance of an  indefinite  number of shares of capital stock in one or more
series.

     Income Fund has authorized capital stock of $1.00 par value. Its shares are
currently  issued in five series,  Corporate  Bond Fund,  Limited  Maturity Bond
Fund, Global Aggressive Bond Fund, U.S. Government Fund and High Yield Fund. The
shares of each series  represent a pro rata beneficial  interest in that series'
net assets and in the earnings and profits or losses derived from the investment
of such assets.

     Tax-Exempt and Cash Funds have authorized  capital stock of $0.10 par value
per share.

     Each of the Corporate Bond, Limited Maturity Bond, U.S. Government,  Global
Aggressive Bond, High Yield and Tax-Exempt Funds currently issues two classes of
shares  which  participate  proportionately  based on their  relative  net asset
values in dividends and  distributions  and have equal voting,  liquidation  and
other rights except that (i) expenses  related to the distribution of each class
of shares or other  expenses  that the Board of Directors may designate as class
expenses from time to time,  are borne solely by each class;  (ii) each class of
shares has exclusive voting rights with respect to any Distribution Plan adopted
for that class;  (iii) each class has different  exchange  privileges;  and (iv)
each class has a different designation.

     When  issued  and paid  for,  each  Fund's  shares  will be fully  paid and
nonassessable  by the Funds.  Shares may be exchanged  as described  above under
"Exchange Privilege," but will have no other preference, conversion, exchange or
preemptive rights.  Shares are transferable,  redeemable and assignable and have
cumulative voting privileges for the election of directors.

     On certain matters,  such as the election of directors,  all shares of each
series of Income Fund vote  together,  with each share having one vote. On other
matters affecting a particular series,  such as the Investment Advisory Contract
or the fundamental investment policies,  only shares of that series are entitled
to vote,  and a  majority  vote of the  shares of that  series is  required  for
approval of the proposal.

     The Funds do not generally hold annual meetings of stockholders and will do
so only when required by law.  Stockholders  may remove directors from office by
votes  cast in person or by proxy at a meeting of  stockholders.  Such a meeting
will be called at the  written  request of the holders of 10 percent of a Fund's
outstanding shares.

     Although  each Fund  offers only its own  shares,  it is possible  one Fund
might become liable for any misstatement, inaccuracy or incomplete disclosure in
this prospectus  relating to another of the Funds. The Board of Directors of the
Funds  has  considered  this  risk  and  has  approved  the  use  of a  combined
prospectus.

STOCKHOLDER INQUIRIES

     Stockholders who have questions  concerning their account or wish to obtain
additional  information  may  write to the  Security  Funds  at 700 SW  Harrison
Street,  Topeka,  Kansas  66636-0001,  or call (913) 295-3127 or 1-800-888-2461,
extension 3127.

- --------------------------------------------------------------------------------
                                       36
<PAGE>

SECURITY FUNDS
PROSPECTUS                                                            APPENDIX A
================================================================================

APPENDIX A

DESCRIPTION OF SHORT-TERM INSTRUMENTS

     The types of  instruments  that will  form the  major  part of Cash  Fund's
investments are described below:

     U.S. GOVERNMENT SECURITIES.  Federal agency securities are debt obligations
which principally result from lending programs of the U.S.  Government.  Housing
and agriculture have traditionally  been the principal  beneficiaries of federal
credit  programs,  and agencies  involved in providing credit to agriculture and
housing account for the bulk of the outstanding agency securities.

     Some U.S.  Government  securities,  such as Treasury  bills and bonds,  are
supported  by the full  faith  and  credit  of the  U.S.  Treasury;  others  are
supported by the right of the issuer to borrow from the Treasury;  others,  such
as those of the Federal  National  Mortgage  Association,  are  supported by the
discretionary  authority  of  the  U.S.  Government  to  purchase  the  agency's
obligations;   still  others  such  as  those  of  the  Student  Loan  Marketing
Association, are supported only by the credit of the instrumentality.

     U.S.  Treasury  bills are issued  with  maturities  of any period up to one
year. Three-month bills are currently offered by the Treasury on a 13-week cycle
and are  auctioned  each week by the  Treasury.  Bills are issued in bearer form
only and are sold only on a  discount  basis,  and the  difference  between  the
purchase  price and the  maturity  value (or the  resale  price if they are sold
before maturity) constitutes the interest income for the investor.

     CERTIFICATES OF DEPOSIT.  A certificate of deposit is a negotiable  receipt
issued by a bank or savings and loan  association in exchange for the deposit of
funds. The issuer agrees to pay the amount deposited plus interest to the bearer
of the receipt on the date specified on the certificate.

     COMMERCIAL  PAPER.  Commercial  paper is  generally  defined  as  unsecured
short-term  notes  issued in bearer form by large  well-known  corporations  and
finance companies.  Maturities on commercial paper range from a few days to nine
months. Commercial paper is also sold on a discount basis.

     BANKER'S  ACCEPTANCES.  A  banker's  acceptance  generally  arises  from  a
short-term credit  arrangement  designed to enable businesses to obtain funds to
finance commercial transactions.  Generally, an acceptance is a time draft drawn
on a bank by an exporter  or an  importer to obtain a stated  amount of funds to
pay for specific  merchandise.  The draft is then  "accepted" by a bank that, in
effect,  unconditionally  guarantees to pay the face value of the  instrument on
its maturity date.

DESCRIPTION OF COMMERCIAL PAPER RATINGS

     A Prime rating is the highest  commercial  paper rating assigned by Moody's
Investors Service, Inc. ("Moody's"). Issuers rated Prime are further referred to
by use of numbers 1, 2 and 3 to denote  relative  strength  within this  highest
classification. Among the factors considered by Moody's in assigning ratings are
the  following:  (1)  evaluation of the  management of the issuer;  (2) economic
evaluation  of  the  issuer's   industry  or  industries  and  an  appraisal  of
speculative type risks which may be inherent in certain areas; (3) evaluation of
the issuer's  products in relation to competition and customer  acceptance;  (4)
liquidity;  (5) amount and quality of long-term debt; (6) trend of earnings over
a period of ten  years;  (7)  financial  strength  of a parent  company  and the
relationships  which exist with the issuer; and (8) recognition by management of
obligations  which may be  present  or may arise as a result of public  interest
questions and preparations to meet such obligations.

     Commercial paper rated "A" by Standard & Poor's Corporation ("S&P") has the
highest  rating and is  regarded  as having  the  greatest  capacity  for timely
payment.  Commercial  paper rated A-1 by S&P has the following  characteristics:
(1)  liquidity  ratios are  adequate to meet cash  requirements;  (2)  long-term
senior  debt is rated "A" or  better;  (3) the issuer has access to at least two
additional  channels  of  borrowing;  (4) basic  earnings  and cash flow have an
upward trend with allowance made for unusual circumstances;  (5) typically,  the
issuer's  industry  is well  established  and the issuer  has a strong  position
within the  industry;  and (6) the  reliability  and quality of  management  are
unquestioned.  Relative  strength  or weakness  of the above  factors  determine
whether the issuer's commercial paper is rated A-1, A-2 or A-3.

DESCRIPTION OF CORPORATE BOND RATINGS

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

- --------------------------------------------------------------------------------
                                       37
<PAGE>

SECURITY FUNDS
PROSPECTUS                                                APPENDIX A (CONTINUED)
================================================================================

which make the long-term risks appear somewhat larger than in Aaa securities.

     A -- Bonds which are rated A possess many favorable  investment  attributes
and are to be  considered  as upper medium  grade  obligations.  Factors  giving
security to principal and interest are considered adequate,  but elements may be
present which suggest a susceptibility to impairment sometime in the future.

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

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

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

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

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

     C -- Bonds  which  are rated C are the  lowest  rated  class of bonds,  and
issues so rated can be  regarded  as having  extremely  poor  prospects  of ever
attaining any real investment standing.

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

STANDARD & POOR'S CORPORATION

     AAA -- Bonds  rated AAA have the  highest  rating  assigned  by  Standard &
Poor's to a debt  obligation.  Capacity to pay interest  and repay  principal is
extremely strong.

     AA -- Bonds rated AA have a very strong  capacity to pay interest and repay
principal and differ from the highest rated issues only in small degree.

     A --  Bonds  rated A have a  strong  capacity  to pay  interest  and  repay
principal  although they are somewhat more susceptible to the adverse effects of
changes in  circumstances  and  economic  conditions  than bonds in higher rated
categories.

     BBB -- Bonds rated BBB are  regarded as having an adequate  capacity to pay
interest and repay principal.  Whereas they normally exhibit 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
bonds in this category than for bonds 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  obligations.  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.

     C -- The rating C is  reserved  for income  bonds in which no  interest  is
being  paid.  D -- Debt rated D is in default  and  payment of  interest  and/or
repayment of principal is in arrears.

     NOTE:  Standard  & Poor's  ratings  from AA to CCC may be  modified  by the
addition  of a plus or minus  sign to show  relative  standing  within the major
categories.

- --------------------------------------------------------------------------------
                                       38
<PAGE>

SECURITY FUNDS
PROSPECTUS                                                           APPENDIX B
================================================================================

APPENDIX B

DESCRIPTION OF MUNICIPAL BOND RATINGS

     The  following  are summaries of the ratings used by Moody's and Standard &
Poor's applicable to permitted investments of Tax-Exempt Fund:

MOODY'S INVESTORS SERVICE, INC.*

     AAA --  Municipal  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 --  Municipal  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 -- Municipal  bonds which are rated A possess many  favorable  investment
attributes and are to be considered as upper medium grade  obligations.  Factors
giving security to principal and interest are considered adequate,  but elements
may be present which  suggest a  susceptibility  to  impairment  sometime in the
future.

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

     NOTE: Moody's applies numerical modifiers 1, 2 and 3 in each generic rating
classification  from  Aa  through  B in its  corporate  bond  ratings.  Although
Industrial Revenue Bonds and Environmental  Control Revenue Bonds are tax-exempt
issues,  they are included in the corporate bond rating  system.  The modifier 1
indicates  that the  security  ranks in the  higher  end of its  generic  rating
category. The modifier 2 indicates a mid-range ranking, and modifier 3 indicates
that the issue ranks in the lower end of its generic  rating  category.  Moody's
does not apply numerical  modifiers other than Aa1, A1 and Baa1 in its municipal
bond rating system,  which offer the maximum  security  within the Aa, A and Baa
groups, respectively.

STANDARD & POOR'S CORPORATION**

     AAA --  Municipal  bonds  rated AAA are  highest  grade  obligations.  They
possess the ultimate degree of protection as to principal and interest.

     AA -- Municipal bonds rated AA also qualify as high grade obligations,  and
in the majority of instances differ from AAA issues only in small degree.

     A -- Municipal bonds rated A are regarded as upper medium grade.  They have
considerable  investment strength but are not entirely free from adverse effects
of changes in economic and trade conditions.
Interest and principal are regarded as safe.

     BBB -- Bonds rated BBB are  regarded as having an adequate  capacity to pay
principal  and  interest.  Whereas they  normally  exhibit  adequate  protection
parameters,  adverse  economic  conditions  or changing  circumstances  are more
likely to lead to a weakened capacity to pay principal and interest for bonds in
this category than for bonds in the A category.

     NOTE:  Standard  & Poor's  ratings  from AA to CCC may be  modified  by the
addition  of a plus or minus  sign to show  relative  standing  within the major
categories.

RATINGS OF SHORT-TERM SECURITIES

MOODY'S INVESTORS SERVICE

     The following ratings apply to short-term municipal notes and loans:

     MIG 1 -- Loans bearing this  designation are of the best quality,  enjoying
strong  protection  from  established  cash  flows for their  servicing  or from
established and broadbased access to the market for refinancing, or both.

     MIG 2 -- Loans bearing this designation are of high quality with margins of
protection ample although not so large as in the preceding group.

     The following ratings apply to both commercial paper and municipal paper:

     PRIME-1:  Issuers  receiving  this  rating  have a  superior  capacity  for
repayment of short-term promissory obligations.

     PRIME-2: Issuers receiving this rating have a strong capacity for repayment
of short-term promissory obligations.

STANDARD & POOR'S CORPORATION

     The following ratings apply to short-term municipal notes:

     AAA: This is the highest  rating  assigned by S&P to a debt  obligation and
indicates an extremely strong capacity to repay principal and pay interest.

     AA: Notes rated AA have a very strong  capacity to repay  principal and pay
interest and differ from AAA issues only in small degree.

     The following ratings apply both to commercial paper and municipal paper:

     A-1: This designation  indicates that the degree of safety regarding timely
payment is very strong.

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

- --------------------------------------------------------------------------------
                                       39
<PAGE>

SECURITY FUNDS
PROSPECTUS                                                APPENDIX B (CONTINUED)
================================================================================

* Moody's Investors Service,  Inc. rates bonds of issuers which have $600,000 or
more  of  debt,  except  bonds  of  educational  institutions,   projects  under
construction,  enterprises without  established  earnings records and situations
where current financial data is unavailable.

** Standard & Poor's Corporation rates all governmental bodies having $1,000,000
or more of debt outstanding unless adequate information is not available.

- --------------------------------------------------------------------------------
                                       40
<PAGE>

SECURITY FUNDS
PROSPECTUS                                                           APPENDIX C
================================================================================

APPENDIX C

REDUCED SALES CHARGES
CLASS A SHARES

     Initial  sales  charges  may  be  reduced  or  eliminated  for  persons  or
organizations  purchasing Class A shares of the Corporate Bond, Limited Maturity
Bond, U.S.  Government,  Global Aggressive Bond, High Yield and Tax-Exempt Funds
alone or in combination with Class A shares of certain other Security Funds.

     For purposes of  qualifying  for reduced  sales  charges on purchases  made
pursuant to Rights of Accumulation or a Statement of Intention (also referred to
as a "Letter of Intent"),  the term "Purchaser"  includes the following persons:
an individual;  an  individual,  his or her spouse and children under the age of
21; a trustee or other  fiduciary of a single  trust estate or single  fiduciary
account  established  for their  benefit;  an  organization  exempt from federal
income tax under  Section  501(c)(3) or (13) of the Internal  Revenue Code; or a
pension,  profit-sharing or other employee benefit plan whether or not qualified
under Section 401 of the Internal Revenue Code.

RIGHTS OF ACCUMULATION

     To reduce sales  charges on purchases of Class A shares of Corporate  Bond,
Limited Maturity Bond, U.S.  Government,  Global  Aggressive Bond, High Yield or
Tax-Exempt Fund, a Purchaser may combine all previous purchases of the Fund with
a contemplated  current  purchase and receive the reduced  applicable  front end
sales  charge.  The  Distributor  must be notified when a sale takes place which
might qualify for the reduced charge on the basis of previous purchases.

     Rights of accumulation  also apply to purchases  representing a combination
of the Class A shares of Corporate Bond, Limited Maturity Bond, U.S. Government,
Global  Aggressive  Bond,  High Yield,  Tax-Exempt,  Growth and Income,  Equity,
Global,  Asset Allocation or Ultra Fund in those states where shares of the Fund
being purchased are qualified for sale.

STATEMENT OF INTENTION

     A Purchaser of Corporate  Bond,  Limited  Maturity Bond,  U.S.  Government,
Global  Aggressive  Bond,  High  Yield or  Tax-Exempt  Fund may choose to sign a
Statement  of Intention  within 90 days after the first  purchase to be included
thereunder,  which will cover future purchases of Class A shares of those Funds,
Security Equity, Global, Asset Allocation,  Growth and Income or Ultra Fund. The
amount of these future  purchases  shall be specified  and must be made within a
13-month  period (or  36-month  period for  purchases  of $1 million or more) to
become eligible for the reduced  front-end sales charge applicable to the actual
amount purchased under the statement.  Five percent (5%) of the amount specified
in the Statement of Intention  will be held in escrow shares until the Statement
is  completed  or  terminated.  These  shares may be redeemed by the Fund if the
Purchaser is required to pay additional sales charges. Any dividends paid by the
Fund will be payable with respect to escrow shares. The Purchaser bears the risk
that the escrow shares may decrease in value.

     A  Statement  of  Intention  may be revised  during the  13-month  (or,  if
applicable,  36-month)  period.  Additional shares received from reinvestment of
income  dividends  and capital  gains  distributions  are  included in the total
amount used to determine reduced sales charges.

REINSTATEMENT PRIVILEGE

     Stockholders  who redeem  their Class A shares of Corporate  Bond,  Limited
Maturity Bond, U.S. Government, Global Aggressive Bond, High Yield or Tax-Exempt
Fund have a one-time  privilege  (1) to reinstate  their  accounts by purchasing
shares  without  a  sales  charge  up to the  dollar  amount  of the  redemption
proceeds;  or (2) to the extent the redeemed shares would have been eligible for
the exchange  privilege,  to purchase  shares of another of the Funds,  Security
Growth and Income,  Equity,  Global, Asset Allocation,  or Ultra Fund, without a
sales charge up to the dollar  amount of the  redemption  proceeds.  To exercise
this privilege,  a stockholder  must provide written notice and the amount to be
reinvested to the Fund within 30 days after the redemption request.

     The  reinstatement  or  exchange  will be made at the net asset  value next
determined after the reinvestment is received by the Fund.

- --------------------------------------------------------------------------------
                                       41
<PAGE>

                       THIS PAGE LEFT BLANK INTENTIONALLY
- --------------------------------------------------------------------------------
                                       42
<PAGE>

SECURITY FUNDS
SECURITY CASH FUND APPLICATION
================================================================================

For IRA/KEOGH/Corporate Plans, complete this Application along with other plan
documents.
MAIL APPLICATION TO: Security Cash Fund, P.O. Box 2548, Topeka, KS 66601
- --------------------------------------------------------------------------------
INITIAL INVESTMENT (CHECK ONE BOX)
[ ] Enclosed is my check for $               made payable to Security Cash Fund.
                              --------------
[ ] On                 I/we wired $                through
       ---------------             ---------------         ---------------------
            Date                                               Name of Bank

MINIMUM $100
                              for Fund account number
- -----------------------------                          -------------------------
  City            State

SUBSEQUENT INVESTMENTS OF $20 CAN BE MADE AT ANY TIME

When investing by wire, call the Fund to advise of the investment. The Fund will
supply a control number for initial investment. Wire federal funds to Bank IV of
Topeka, Trust Department, Topeka, Kansas.
          Attn:
               ----------------------------------------------------------
                      (Include investor's name and account number)
- --------------------------------------------------------------------------------
DIVIDENDS (CHECK ONE BOX)

[ ] Reinvest automatically all daily dividends and other distributions.
[ ] Cash payment of all dividends each month and send proceeds to investor.
- --------------------------------------------------------------------------------
CHECKING ACCOUNT PRIVILEGE

[ ] Please send a  supply  of checks permitting  me/us to redeem  shares in this
    account by  writing  checks  for $100 or more made  payable  to any  person.
    COMPLETE  SIGNATURE CARD ON REVERSE SIDE.  Allow three weeks for delivery of
    check supply.
- --------------------------------------------------------------------------------
SPECIAL OPTIONS (CHECK APPLICABLE BOXES)

[ ] Telephone Exchange
[ ] Telephone Redemption

By  checking  the  applicable  boxes and  signing  this  Application,  Applicant
authorizes  the  Investment  Manager  to honor  any  telephone  request  for the
exchange  and/or  redemption  of Fund shares  (maximum  telephone  redemption is
$10,000),  subject to the terms of the Fund's prospectus. The Investment Manager
has established reasonable procedures to confirm that instructions  communicated
by telephone  are genuine and may be liable for any losses due to  fraudulent or
unauthorized  instructions  if it  fails to  comply  with  its  procedures.  The
procedures require that any person requesting a telephone redemption or exchange
provide the  account  registration  and number and  owner's  tax  identification
number and such request must be received on a recorded line.

THE  AUTHORIZATION ON REVERSE SIDE FOR CORPORATION,  PARTNERSHIP,  TRUST,  ETC.,
MUST BE COMPLETED AND RETURNED WITH THIS FORM.
- --------------------------------------------------------------------------------
[ ] Systematic Withdrawal Program (Minimum account $5,000)
    Beginning                        , 19        , you are hereby authorized and
              -----------------------     -------
    instructed to send a check for $
                                    -----------------------
    (minimum $25) drawn on approximately [ ] 11th day [ ] 26th day of the month.
    Draw payment [ ]monthly [ ]quarterly [ ]semianually [ ]annually
- --------------------------------------------------------------------------------
ACCOUNT REGISTRATION (PLEASE PRINT)

[ ] Individual
[ ] Corporate
[ ] Non-Profit
[ ] Profit-Sharing

- ----------------------------------------------  --------------------------------
First             Middle               Last     Owner's Taxpayer Identification
                                                No. or Social Security No.
- ----------------------------------------------
First             Middle               Last
                                                Industry Type
- ----------------------------------------------                ------------------
Name of Corporation, Trust, Partnership, etc.       (Farming, Mgf., Sales, etc.)
                                                Telephone
                                                Business (   )
- ----------------------------------------------                 -----------------
Street Address

                                                Home     (   )
- ----------------------------------------------                 -----------------
City              State                Zip
If address is outside U.S. please indicate if U.S. Citizen [ ] Yes [ ] No
- --------------------------------------------------------------------------------
TAX WITHHOLDING

TAXPAYER  IDENTIFICATION  CERTIFICATION:  Under the penalties of perjury,  I (1)
certify  that  the  number  provided  on  this  form  is  my  correct   taxpayer
identification  number  and (2),* that I am not  subject  to backup  withholding
either because I have not been notified that I am subject to backup  withholding
as a result of a failure to report all  interest or  dividends,  or the Internal
Revenue  Service  has  notified  me  that  I am  no  longer  subject  to  backup
withholding.

*The owner must strike out the language  certifying that they are not subject to
backup  withholding  due to  notified  underreporting  IF THE  INTERNAL  REVENUE
SERVICE NOTIFIED THEM THAT THEY ARE SUBJECT TO BACKUP WITHHOLDING, and they have
not  received  notice from the service  advising  that  backup  withholding  has
terminated.
- --------------------------------------------------------------------------------
SIGNATURE(S) OF APPLICANTS

The Internal  Revenue  Service does not require your consent to any provision of
this document other than the certifications to avoid backup withholding.


- -------------------------------------------  -----------------------------------
Owner                                        Joint Owner

- -------------------------------------------  -----------------------------------
Corporate Officer, Trustee, etc.             Title
Date                                         In case of joint ownership, both
    ---------------------------------------  must sign. If no form of ownership
                                             is designated, then it will be
INVESTMENT DEALER                            assumed the ownership is "as
                                             joint tenants, with right of
- -------------------------------------------  survivorship, and not as tenants
Name of Firm                                 in common."

- -------------------------------------------  -----------------------------------
Street                                       Dealer Authorized

- -------------------------------------------  -----------------------------------
City            State                Zip     Account Representative

- --------------------------------------------------------------------------------
                                       43
<PAGE>

SECURITY FUNDS
SECURITY CASH FUND APPLICATION (CONTINUED)
================================================================================

Checking Account Privilege - If you have elected this option, the following card
must be completed. This card is similar to one which must be signed when opening
any checking  account.  All joint owners named in the account  registration must
sign this card.  Names  must be signed  exactly  as they  appear in the  account
registration.  All  persons  eligible  to sign  checks for  corporate  accounts,
partnerships, trusts, etc. must sign this card.
- --------------------------------------------------------------------------------
The payment of funds on the  conditions  set forth below and on the reverse side
is authorized by the  signature(s)  appearing on the  signature  card.  Security
Management Company, LLC, the Fund's Transfer Agent, is hereby appointed agent by
the  person(s)  signing this card and will cause the Fund to redeem a sufficient
number of shares from the account to cover checks  presented for payment without
requiring signature  guarantees.  The Fund and its agents will not be liable for
any loss,  expense or cost arising out of check  redemptions or checks  returned
without  payment.  SHARES  OUTSTANDING IN THE ACCOUNT FOR LESS THAN 15 DAYS WILL
NOT BE LIQUIDATED TO PAY CHECKS  PRESENTED  UNLESS THE TRANSFER AGENT IS ASSURED
THAT GOOD  PAYMENT HAS BEEN  COLLECTED  THROUGH  NORMAL  BANKING  CHANNELS.  The
Transfer  Agent has the right not to honor checks that are for less than $100 or
checks in an amount  exceeding the value of the account at the time the check is
presented  for  payment.  This  privilege  is subject to the  provisions  of the
current  prospectus of the Fund as amended from time to time. This agreement may
be modified or  terminated  at any time by the Fund or the  Transfer  Agent upon
notification mailed to the shareholder's address of record.
- --------------------------------------------------------------------------------
SECURITY CASH FUND SIGNATURE CARD
- --------------------------------------------------------------------------------

                                     -------------------------------------------
                                     Account Number
Authorized Signatures:

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
[ ] Check here if two signatures are required on checks
[ ] Check here if only one signature required on checks.

In signing this card each signatory  agrees to be subject to the customary rules
and regulations  governing  checking accounts and to the conditions set forth on
the reverse side. If the Checking  Account  Privilege is  established  after the
opening of the account,  or if any change is made in the above information,  all
signatures will have to be guaranteed.
- --------------------------------------------------------------------------------

                          AUTHORIZATION FOR REDEMPTION

CORPORATE RESOLUTION

I,                                        , duly elected and acting Secretary of
   ---------------------------------------
                                                                 , a corporation
- -----------------------------------------------------------------
organized and existing under the laws of
                                         --------------------------------------,
certify  that  the  following  resolution  is a true  and  correct  copy  of the
resolution  adopted by the Board of  Directors  at its regular  meeting  held on
                                              , which resolution is currently in
- ----------------------------------------------
full force and effect:

RESOLVED,  That the below named  individual(s)  of this  corporation  are hereby
authorized  to give notice,  instructions,  complete  necessary  forms,  execute
withdrawals,  and to transact any other business necessary on this corporation's
account invested in shares of Security Cash Fund.  FURTHER  RESOLVED,  That this
corporation assumes entire  responsibility for, and agrees to indemnify and hold
harmless  Security  Cash Fund  and/or its  agents  against  any and all  claims,
liabilities,  damages,  actions,  charges and expense sustained by action of the
below named individual(s).

- ---------------------------------------  ---------------------------------------
(Print or type) Name and Title           Signature(s)

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

- --------------------------------------------------------------------------------
IN WITNESS WHEREOF, I hereunto set my
hand and the seal of this corporation
this        day of             , 19
     ------        ------------    ----.
(CORPORATE SEAL)                         SECRETARY
                                                   -----------------------------
- --------------------------------------------------------------------------------
AUTHORIZATION FOR PARTNERSHIP, TRUST, OR RETIREMENT PLAN

We,  the  undersigned,  being the  principal  partners  or the  trustees  of the

- --------------------------------------------------------------------------------
                          (Partnership or Trust/Plan)
hereby state that we are  authorized to invest the assets of the  partnership or
trust/plan     in     Security     Cash    Fund.     We    also    agree    that

- --------------------------------------------------------------------------------
or -----------------------------------------------------------------------------

have individual authority to purchase, sell, assign, and transfer securities and
to sign checks issuable by the partnership or the trust/plan redeeming shares of
the Fund. We further state that this  individual  authority shall continue to be
honored until revoked by written notice from either of us and is received by the
Transfer   Agent   (Security   Management   Company,   LLC).   By  signing  this
authorization,  we agree that Security Cash Fund,  Security  Management Company,
LLC, and Security  Distributors,  Inc.,  shall be indemnified  and held harmless
from any loss,  damage,  cost or claim  that may arise  from any  authorized  or
unauthorized  use of the assets or checks of the  partnership  or  trust/plan in
connection with the holdings of the Fund.

- ---------------------------------------  ---------------------------------------
Print or type name                       Signature(s)
- --------------------------------------------------------------------------------
                                         SIGNATURE GUARANTEED BY

- --------------------------------------------------------------------------------
                                       44
<PAGE>

SECURITY FUNDS
APPLICATION

1. ACCOUNT  REGISTRATION  (THE OWNER(S) MUST COMPLETE SECTION 10  "CERTIFICATION
AND SIGNATURE" TO ESTABLISH AN ACCOUNT.)

I hereby authorize the establishment of the account marked below and acknowledge
receipt   of  the   Fund's   current   prospectus.   Check   is   enclosed   for
$                   (minimum $100)  payable  to  SECURITY DISTRIBUTORS, INC.  as
 ------------------
an initial  investment.  I am of legal age in the state of my residence and wish
to  purchase  shares  of the Fund  indicated  below.  By the  execution  of this
application,  the undersigned represents and warrants that the investor has full
right,  power and authority to make this  investment and the undersigned is duly
authorized to sign this application and to purchase or redeem shares of the Fund
on behalf of the  investor.  No stock  certificate  is to be issued  unless I so
request.  See the prospectus for information  about an  Accumulation  Plan which
allows a minimum investment of $100 and subsequent investments of $20.

- -------------------------------------------------------------
Owner/Custodian/Trustee Name (Print)

- -------------------------------------------------------------
Social Security Number                          Date of Birth

- -------------------------------------------------------------
Joint Owner/Minor Name (Print) [ ] Check if UGMA/UTMA Account

- -------------------------------------------------------------
Social Security Number                          Date of Birth

2. ADDRESS AND TELEPHONE NUMBER

- ------------------------------   -----------------------------------------------
Street Address                   Daytime Telephone
(for first individual)

- ------------------------------   Citizenship [ ] U.S.  [ ] Other
City, State, Zip Code                                           ----------------
                                                                Indicate Country

3. INITIAL INVESTMENT

CLASS OF SHARES (MUST SELECT ONE ONLY) ( ) A SHARES ( ) B SHARES (IF NO CLASS IS
SELECTED, PURCHASE(S) WILL BE MADE OF A SHARES)

<TABLE>
<S>                            <C>         <C>                                  <C>
SECURITY EQUITY FUND           $           SECURITY LIMITED MATURITY BOND FUND  $
                                ------                                           ------
SECURITY GLOBAL FUND           $           SECURITY U.S. GOVERNMENT FUND        $
                                ------                                           ------
SECURITY ASSET ALLOCATION FUND $           SECURITY GLOBAL AGGRESSIVE BOND FUND $
                                ------                                           ------
SECURITY GROWTH & INCOME FUND  $           SECURITY HIGH YIELD FUND             $
                                ------                                           ------
SECURITY ULTRA FUND            $           SECURITY TAX-EXEMPT FUND             $
                                ------                                           ------
SECURITY CASH FUND             $           SECURITY SOCIAL AWARENESS FUND       $
                                ------                                           ------
SECURITY CORPORATE BOND FUND   $
                                ------
</TABLE>

4. DIVIDEND OPTION (CHECK ONE ONLY)

(If no option is selected,  distributions  will be reinvested into the Fund that
pays them.)

[ ] Reinvest all dividends and capital gains
[ ] Reinvest only capital gains and pay dividends in cash
[ ] Cash payment of dividends and capital gains
[ ] Invest dividends and capital gains into another Security Fund account
(must be same  class of  shares;  if new  account,  number  will be  assigned)
Fund Name                                      Account Number
          ------------------------------------                ------------------

[ ] Send distributions to third party below

Account No. (if applicable)
                            ----------------------------------------------------
Name
     ---------------------------------------------------------------------------
Address
        ------------------------------------------------------------------------

5. SYSTEMATIC WITHDRAWAL PROGRAM (FOR ACCOUNTS OF $5,000 OR MORE)

You are hereby authorized to send a check(s) beginning:
    Month                  Day [ ] 11th or [ ] 26th 19
          ----------------                            ----
    (if no date is selected withdrawal will be made on the 26th)

Payable: [ ] monthly [ ] quarterly [ ] semi-annually [ ] annually

Fund Name                               Fund Name
          -----------------------------           ------------------------------

Account No. (if known)                  Account No. (if known)
                       ----------------                          ---------------
(if 3 or more funds, please send written instructions)

Level Payment $         ($25 minimum)   Level Payment $         ($25 minimum)
               --------                                --------
Variable Payment based on fixed number  Variable Payment based on fixed number
of shares or a percentage of account    of shares or a percentage of account
value ($25 minimum)                     value ($25 minimum)
Number of shares:             or        Number of shares:             or
                  -----------                             -----------
Percentage of account value:            Percentage of account value:
                             ---------                               ---------

Note:  For  Class B  shares,  annual  withdrawals  in  excess of 10% of value of
account at time program is established  may be subject to a contingent  deferred
sales charge.

Complete this section only if you want check payable and sent to another address
(please print):

Name                              Signature(s) of all registered owners required
     ----------------------------

Address                           Individual Signature
        -------------------------                      -------------------------

City, State, Zip Code             Joint Owner Signature
                     ------------                       ------------------------

6. SECUR-O-MATIC[Registration Mark] BANK DRAFT PLAN

I wish to make investments  directly from my checking account.  (Please attach a
voided check to this application.)

Fund Name                    Account Number (if known)         Amount  $
          ------------------                           -------          -------

Fund Name                    Account Number (if known)         Amount  $
          ------------------                           -------          -------

Date: [ ] 7th Day of Month [ ] 14th Day of Month [ ] 21st Day of Month
      [ ] 28th Day of Month
      (if no date is selected investment will be made on the 21st)

Mode: [] Monthly ($20 minimum) [] Bi-Monthly ($40 minimum)
      [] Quarterly ($50 minimum) [] Semiannually ($100 minimum)
      [] Annually ($200 minimum)

You should notify your bank that you are going to use this service to ensure
they accept preauthorized electronic drafts.

                              (continued on back)
<PAGE>

7. RIGHTS OF ACCUMULATION

I own shares in other  Security  Funds which may entitle this purchase to have a
reduced sales charge under the provisions in the Fund Prospectus.

- --------------------------------  ---------------------------  -----------------
Current Account Registration      Fund Name                    Account Number(s)

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

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

8. STATEMENT OF INTENTION

[ ] Please check here if you wish to receive a Statement of Intention. This form
allows you to  purchase  shares at reduced  sales  charges if you plan to invest
more than: (Please check one) [ ] $50,000 [ ] $100,000 [ ] $250,000 [ ] $500,000
[ ]  $1,000,000  in  installments  during  the next 13  months  (36  months  for
purchases  of  $1  million  or  more).  See  the  current  prospectus  for  more
information.

9. TELEPHONE EXCHANGE AND REDEMPTION PRIVILEGE

If you would  like to have  telephone  exchange  and/or  redemption  privileges,
please mark one or more of the boxes below:

   Yes, I want [ ] telephone exchange [ ] telephone redemption privileges.

By checking the applicable  box(es) and signing this Application,  you authorize
the Investment  Manager to honor any telephone  request for the exchange  and/or
redemption of Fund shares (maximum telephone redemption is $10,000),  subject to
the  terms  of the Fund  prospectus.  The  Investment  Manager  has  established
reasonable procedures to confirm that instructions communicated by telephone are
genuine  and may be liable  for any  losses due to  fraudulent  or  unauthorized
instructions if it fails to comply with its procedures.  The procedures  require
that any person  requesting  a  telephone  redemption  or  exchange  provide the
account  registration and number and owner's tax identification  number and such
request must be received on a recorded  line.  Neither the Fund,  the Investment
Manager  nor the  Underwriter  will be liable for any loss,  liability,  cost or
expense  arising out of any  telephone  request,  provided  that the  Investment
Manager  complied with its procedures.  Thus, a stockholder may bear the risk of
loss from a fraudulent or unauthorized request.

10. CERTIFICATION AND SIGNATURE

                     TAX IDENTIFICATION NUMBER CERTIFICATION

UNDER PENALTIES OF PERJURY I CERTIFY THAT:

1. The number shown on this form is my correct  taxpayer  identification  number
   (or I am waiting for a number to be issued to me); and

2. I am not subject to backup withholding  because:  (a) I am exempt from backup
   withholding,  or (b) I have not been notified by the Internal Revenue Service
   (IRS)  that I am subject  to backup  withholding  as a result of a failure to
   report all interest or dividends, or (c) the IRS has notified me that I am no
   longer subject to backup withholding.

The Internal  Revenue  Service does not require your consent to any provision of
this  document   other  than  the   certifications   required  to  avoid  backup
withholding.

- --------------------------------------------------------------------------------
Signature of Owner                                      Date

- --------------------------------------------------------------------------------
Signature of Joint Owner                                Date

In case of joint ownership, both must sign. If no form of ownership is indicated
then it will be  assumed  the  ownership  is as "joint  tenants,  with  right of
survivorship" and not as "tenants in common."

CERTIFICATION INSTRUCTIONS - You must cross out item (2) to the left if you have
been  notified  by IRS that you are  currently  subject  to  backup  withholding
because of underreporting interest or dividends on your tax return.

11. INVESTMENT DEALER

I (we)  agree  to act as  dealer  under  this  account  in  accordance  with the
provisions of the Dealer  Agreement and appoint Security  Distributors,  Inc. to
act as my (our) agent pursuant  thereto.  I (we) represent that the  appropriate
prospectus was delivered to the above indicated owner(s).

- --------------------------------------------------------------------------------
Name of Firm (Print)

- --------------------------------------------------------------------------------
Business Address

- --------------------------------------------------------------------------------
City, State, Zip Code

- --------------------------------------------------------------------------------
Signature of Authorized Dealer

- -----------------------------------------------------   ------------------------
Representative's Name                                   Account Executive Number

- --------------------------------------------------------------------------------
Business Address

- --------------------------------------------------------------------------------
City, State, Zip Code

- --------------------------------------------------------------------------------
Representative's Telephone Number

 SEND COMPLETED APPLICATION TO SECURITY DISTRIBUTORS, INC., 700 SW HARRISON ST.,
                              TOPEKA, KS 66636-0001
                           1-800-888-2461, EXT. 3127


                            Attach Voided Check Here
         (Check must be preprinted with the bank account registration)

<PAGE>

[SDI LOGO}

700 SW Harrison St.
Topeka, KS 66636-0001
(913) 295-3127
(800) 888-2461



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