SECURITY INCOME FUND /KS/
497, 2000-04-14
Previous: INVESTMENT TRUST, 497J, 2000-04-14
Next: SHERWIN WILLIAMS CO, 8-K, 2000-04-14




<PAGE>
              CORPORATE BOND FUND AND LIMITED MATURITY BOND FUND OF
                              SECURITY INCOME FUND
                             700 SW HARRISON STREET
                                TOPEKA, KS 66636
                                 (800) 888-2461

                                                                   April 3, 2000

Dear Shareholder:

Your Board of  Directors  has called a special  meeting of  Shareholders  of the
Corporate Bond Fund and Limited  Maturity Bond Fund of Security  Income Fund, to
be held at 9:30 a.m.,  local  time,  on April 26,  2000,  at the  offices of the
Funds, Security Benefit Group Building,  700 SW Harrison Street,  Topeka, Kansas
66636.

The Board of Directors of Security Income Fund has approved a reorganization  of
each of the  Corporate  Bond  Fund and  Limited  Maturity  Bond  Fund,  into the
Diversified  Income Fund of Security  Income Fund,  which is managed by Security
Management  Company,  LLC and is part of the Security Group of Mutual Funds (the
"Reorganization").  The  Diversified  Income  Fund of  Security  Income Fund has
investment objectives and policies that are similar in many respects to those of
the Corporate Bond Fund and Limited  Maturity Bond Fund of Security Income Fund.
The  Reorganization  is expected to result in operating  expenses that are lower
for shareholders.

You are asked to vote to  approve  a Plan of  Reorganization.  The  accompanying
document  describes  the  proposed  transaction  and  compares  the policies and
expenses of each of the Funds for your evaluation.

After  careful  consideration,  the Board of Directors  of Security  Income Fund
unanimously  approved this  proposal with respect to each of its Corporate  Bond
Fund and Limited Maturity Bond Fund and recommended that shareholders of each of
those Funds vote "FOR" the proposal.

A Proxy  Statement/Prospectus  that describes the Reorganization is enclosed. We
urge you to vote your shares by completing  and returning the enclosed  proxy in
the  envelope  provided,  or vote by Internet  or  telephone,  at your  earliest
convenience.

YOUR VOTE IS IMPORTANT  REGARDLESS  OF THE NUMBER OF SHARES YOU OWN. IN ORDER TO
AVOID THE ADDED  COST OF  FOLLOW-UP  SOLICITATIONS  AND  POSSIBLE  ADJOURNMENTS,
PLEASE TAKE A FEW MINUTES TO READ THE PROXY  STATEMENT/PROSPECTUS  AND CAST YOUR
VOTE. IT IS IMPORTANT THAT YOUR VOTE BE RECEIVED NO LATER THAN APRIL 25, 2000.

The Funds are using Shareholder Communications Corporation, a professional proxy
solicitation firm, to assist  shareholders in the voting process. As the date of
the meeting approaches, if we have not already heard from you, you may receive a
telephone  call from  Shareholder  Communications  Corporation  reminding you to
exercise your right to vote.

We appreciate  your  participation  and prompt response in this matter and thank
you for your continued support.

                                                                Sincerely,


                                                                James R. Schmank
                                                                President
<PAGE>
              Corporate Bond Fund and Limited Maturity Bond Fund of
                              Security Income Fund
                             700 SW Harrison Street
                                Topeka, KS 66636
                                 (800) 888-2461


                  NOTICE OF SPECIAL MEETINGS OF SHAREHOLDERS OF
               CORPORATE BOND FUND AND LIMITED MATURITY BOND FUND
                             OF SECURITY INCOME FUND
                          TO BE HELD ON APRIL 26, 2000


To the Shareholders:

Special  meetings of  Shareholders  of the  Corporate  Bond Fund and the Limited
Maturity  Bond Fund of  Security  Income  Fund will be held on April 26, 2000 at
9:30 a.m., local time, at the Security  Benefit Group Building,  700 SW Harrison
Street, Topeka, Kansas 66636.

The  purposes  of the  special  meeting of the  Corporate  Bond Fund of Security
Income Fund are as follows:

1.  To approve a Plan of Reorganization  providing for the acquisition of all of
    the assets and  liabilities  of the Corporate  Bond Fund by the  Diversified
    Income  Fund of Security  Income  Fund solely in exchange  for shares of the
    Diversified  Income  Fund,  followed  by  the  complete  liquidation  of the
    Corporate Bond Fund; and

2.  To  transact  such other  business as may  properly  come before the special
    meeting of Shareholders or any adjournments thereof.

The  purposes  of the  special  meeting  of the  Limited  Maturity  Bond Fund of
Security Income Fund are as follows:

1.  To approve a Plan of Reorganization  providing for the acquisition of all of
    the  assets  and  liabilities  of the  Limited  Maturity  Bond  Fund  by the
    Diversified  Income  Fund of Security  Income  Fund  solely in exchange  for
    shares of the Diversified Income Fund, followed by the complete  liquidation
    of the Limited Maturity Bond Fund; and

2.  To  transact  such other  business as may  properly  come before the special
    meeting of Shareholders or any adjournment thereof.

Shareholders  of  record at the  close of  business  on  February  28,  2000 are
entitled to notice of, and to vote at, their respective meetings. Your attention
is called to the accompanying Proxy Statement/Prospectus.  Regardless of whether
you plan to attend your meeting,  PLEASE COMPLETE,  SIGN AND RETURN PROMPTLY THE
ENCLOSED  PROXY CARD OR VOTE BY  TELEPHONE  OR INTERNET so that a quorum will be
present and a maximum number of shares may be voted.  If you are present at your
meeting, you may change your vote, if desired, at that time.

                                              By Order of the Board of Directors


                                              Amy J. Lee
                                              Secretary

April 3, 2000
<PAGE>
                                TABLE OF CONTENTS


INTRODUCTION...............................................................    3
SUMMARY....................................................................    4
   The Proposed Reorganization.............................................    4
   Purchase, Redemption, and Exchange Information..........................    5
   Federal Income Tax Consequences of the Reorganization...................    5
COMPARISON OF RISKS INVOLVED IN INVESTING IN THE FUNDS.....................    5
INVESTMENT OBJECTIVES AND POLICIES.........................................    6
   Comparison of Objectives and Primary Investment Strategies..............    6
   Comparison of Portfolio Characteristics.................................    8
   Relative Performance....................................................    8
   Comparisons of Securities and Investment Techniques.....................    9
COMPARISON OF FEES AND EXPENSES............................................   12
   Operating Expenses......................................................   12
   General Information.....................................................   14
ADDITIONAL INFORMATION ABOUT DIVERSIFIED INCOME FUND.......................   14
   Investment Manager......................................................   14
   Investment Personnel....................................................   14
   Performance of Diversified Income Fund..................................   15
INFORMATION ABOUT THE REORGANIZATION.......................................   16
   The Reorganization Plan.................................................   16
   Reasons for the Reorganization..........................................   16
   Board Consideration.....................................................   17
   Tax Considerations......................................................   17
   Expenses of the Reorganization..........................................   17
ADDITIONAL INFORMATION ABOUT THE FUNDS.....................................   17
   Form of Organization....................................................   17
   Dividends and Other Distributions.......................................   18
GENERAL INFORMATION ABOUT THE PROXY STATEMENT..............................   18
   Solicitation of Proxies.................................................   18
   Voting Rights...........................................................   18
   Other Matters to Come Before the Special Meeting........................   19
   Shareholder Proposals...................................................   19
   Reports to Shareholders.................................................   19
MORE INFORMATION REGARDING THE FUNDS.......................................   20
APPENDIX A.................................................................   30
APPENDIX B.................................................................   39
APPENDIX C.................................................................   40
<PAGE>
                           PROXY STATEMENT/PROSPECTUS
                              SECURITY INCOME FUND
                             700 SW HARRISON STREET
                              TOPEKA, KANSAS 66636
                                 (800) 888-2461

                 SPECIAL MEETINGS OF SHAREHOLDERS TO BE HELD ON
                                 APRIL 26, 2000

               CORPORATE BOND FUND AND LIMITED MATURITY BOND FUND
                             OF SECURITY INCOME FUND
                       relating to the reorganization into
            DIVERSIFIED INCOME FUND (FORMERLY "U.S. GOVERNMENT FUND")
               OF SECURITY INCOME FUND(COLLECTIVELY, THE "FUNDS")


INTRODUCTION

This Proxy Statement/Prospectus provides you with information about the proposed
transactions.  The  transactions  involve the  transfer of all of the assets and
liabilities of Corporate Bond Fund  ("Corporate Bond Fund") and Limited Maturity
Bond  Fund   ("Limited   Maturity  Bond  Fund")  to   Diversified   Income  Fund
("Diversified Income Fund") (formerly "U.S. Government Fund") of Security Income
Fund,  an  open-end  investment  company,  solely  in  exchange  for  shares  of
Diversified Income Fund (the  "Reorganization").  The Corporate Bond Fund and/or
Limited  Maturity  Bond Fund would then  distribute  to you your  portion of the
shares of Diversified Income Fund it received in the Reorganization.  The result
would be a liquidation  of Corporate  Bond Fund and Limited  Maturity Bond Fund.
You would  receive  shares of the  Diversified  Income Fund having an  aggregate
value equal to the aggregate  value of the shares of Corporate  Bond Fund and/or
Limited  Maturity  Bond  Fund  held by you as of the  close of  business  on the
business day preceding the closing of the Reorganization. You are being asked to
vote on the Plan of  Reorganization  through which these  transactions  would be
accomplished.

Because you, as a shareholder  of Corporate  Bond Fund and/or  Limited  Maturity
Bond Fund are being  asked to  approve a  transaction  that will  result in your
holding shares of Diversified Income Fund, this Proxy Statement also serves as a
Prospectus for Diversified Income Fund.

This Proxy  Statement/Prospectus,  which you should retain for future reference,
contains  important  information about  Diversified  Income Fund that you should
know before  investing.  A Statement of  Additional  Information  dated April 3,
2000, containing additional  information about the Reorganization has been filed
with the SEC and is available,  without charge, by calling (800) 888-2461. For a
more detailed discussion of the investment  objectives,  policies,  restrictions
and risks of each of the Funds,  see the Prospectus  (the "Security  Income Fund
Prospectus")  and the Statement of Additional  Information for each of the Funds
dated April 30,  1999,  as  supplemented  November 1, 1999 and February 7, 2000,
which may be obtained,  without charge,  by calling (800) 888-2461.  Each of the
Funds also  provides  periodic  reports  to its  shareholders,  which  highlight
certain important information about the Funds,  including investment results and
financial information.  The annual report for the Funds dated December 31, 1999,
is included herewith and is incorporated herein by reference.

You may also obtain  proxy  materials,  reports and other  information  filed by
Diversified Income Fund from the SEC's Public Reference Room (1-800-SEC-0330) or
from the SEC's internet website at www.sec.gov.

THE  SECURITIES AND EXCHANGE  COMMISSION  HAS NOT APPROVED OR DISAPPROVED  THESE
SECURITIES,  OR DETERMINED THAT THIS PROXY  STATEMENT/PROSPECTUS  IS TRUTHFUL OR
COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

DATE:  APRIL 3, 2000
<PAGE>
SUMMARY

You should read this entire Proxy Statement/Prospectus carefully. For additional
information, you should consult the Security Income Fund Prospectus and the Plan
of Reorganization, which is attached hereto as Appendix A.

THE PROPOSED  REORGANIZATION  -- On February 4, 2000,  the Board of Directors of
Security  Income  Fund  approved  with  respect  to each of the  Funds a Plan of
Reorganization  (the  "Reorganization  Plan").  Subject to approval of Corporate
Bond Fund shareholders, the Reorganization Plan provides for:

o  the  transfer  of all of the  assets of  Corporate  Bond Fund to  Diversified
   Income Fund, in exchange for shares of Diversified Income Fund;

o  the  assumption  by  Diversified  Income  Fund of all of the  liabilities  of
   Corporate Bond Fund;

o  the distribution of shares of the Diversified Income Fund to the shareholders
   of Corporate Bond Fund; and

o  complete liquidation of Corporate Bond Fund.

Subject  to  approval  of  Limited   Maturity   Bond  Fund   shareholders,   the
Reorganization Plan provides for:

o  the  transfer  of all  of  the  assets  of  Limited  Maturity  Bond  Fund  to
   Diversified Income Fund, in exchange for shares of Diversified Income Fund;

o  the  assumption  by  Diversified  Income  Fund of all of the  liabilities  of
   Limited Maturity Bond;

o  the distribution of shares of the Diversified Income Fund to the shareholders
   of Limited Maturity Bond Fund; and

o  complete liquidation of Limited Maturity Bond Fund.

The  Reorganization  is expected to be effective upon the opening of business on
May 1, 2000, or on a later date as the parties may agree (the  "Closing").  As a
result of the Reorganization,  each shareholder of Class A and Class B shares of
Corporate Bond Fund and Limited Maturity Bond Fund would become a shareholder of
the same class of shares of  Diversified  Income Fund.  Each  shareholder  would
hold, immediately after the Closing,  shares of each class of Diversified Income
Fund having an  aggregate  value equal to the  aggregate  value of the shares of
that same class of shares of Corporate  Bond Fund and/or  Limited  Maturity Bond
Fund held by that  shareholder  as of the close of business on the  business day
preceding the Closing.

The  Reorganization  is intended  to  eliminate  duplication  of costs and other
inefficiencies  arising from having  three  substantially  similar  mutual funds
within the same group of funds,  as well as to assist in achieving  economies of
scale.  Shareholders in Corporate Bond and Limited  Maturity Bond Funds (as well
as  those  in  Diversified  Income  Fund)  are  expected  to  benefit  from  the
elimination of this  duplication and from the larger asset base that will result
from the Reorganization.

Approval of the Reorganization  Plan with respect to each of Corporate Bond Fund
and Limited  Maturity Bond Fund requires the  affirmative  vote of a majority of
the outstanding  shares of that Fund. In the event that the shareholders of only
one  of  the  Corporate  Bond  and  Limited  Maturity  Bond  Funds  approve  the
Reorganization,   that   particular   Fund  whose   shareholders   approved  the
Reorganization  would be reorganized into Diversified  Income Fund. The Fund not
approving the Reorganization would continue to operate as a separate entity.

AFTER  CAREFUL  CONSIDERATION,  THE BOARD OF DIRECTORS  OF SECURITY  INCOME FUND
UNANIMOUSLY APPROVED THE PROPOSED REORGANIZATION.  THE BOARD RECOMMENDS THAT YOU
VOTE "FOR" THE PROPOSED REORGANIZATION.

In considering whether to approve the Reorganization, you should note that:

o  Corporate Bond Fund and Limited Maturity Bond Fund have investment objectives
   and policies that are similar in many respects to the  investment  objectives
   and  policies  of  Diversified  Income  Fund.  Corporate  Bond Fund  seeks to
   preserve capital while generating income.  Limited Maturity Bond Fund seeks a
   high level of income consistent with moderate price fluctuation.  Diversified
   Income Fund seeks to provide a high level of interest income with security of
   principal.  Each of the Funds  invests  primarily  in  investment  grade debt
   securities.

o  The proposed  Reorganization  offers actual or potential  reductions in total
   operating expenses for shareholders of each of the Funds. This chart compares
   the  current  operating  expenses,  management  fees,  and  distribution  and
   shareholder service fees of the Funds.

- --------------------------------------------------------------------------------
                          MANAGEMENT     DISTRIBUTION AND
                           FEES(1)         SERVICE FEES       OTHER EXPENSES(2)
- --------------------------------------------------------------------------------
Class of Shares.......   All Classes    Class A    Class B    Class A    Class B
Corporate Bond........      0.50%        0.25%      1.00%      0.35%      0.65%
Limited Maturity Bond.      0.50%        0.25%      1.00%      0.52%      0.91%
Diversified Income....      0.35%(3)     0.25%      1.00%      0.62%      0.86%
- --------------------------------------------------------------------------------
(1)  During the year ended December 31, 1999, Security  Management Company,  LLC
     ("Security  Management"),  the investment adviser for each Fund, waived its
     management fee for Limited  Maturity Bond and Diversified  Income Funds and
     reimbursed  certain  operating  expenses  for  Class B  shares  of  Limited
     Maturity  Bond and  Diversified  Income  Fund and  Class A and B shares  of
     Corporate Bond Fund. As a result,  the after waiver or reimbursement  total
     expense  ratios  for  the  Corporate  Bond,   Limited   Maturity  Bond  and
     Diversified  Income Funds,  respectively,  were 1.09%,  0.77% and 0.87% for
     Class A shares and 1.85%, 1.85% and 1.85% for Class B shares.
(2)  Other  Expenses are  expressed as a ratio of expenses to average  daily net
     assets  ("expense  ratio") based on the one-year  period ended December 31,
     1999.
(3)  Effective  February 4, 2000, the management fee for Diversified Income Fund
     was reduced from 0.50% to 0.35%.
(4)  Fees are expressed as an annual rate of average daily net assets.
- --------------------------------------------------------------------------------

This chart shows an estimate of the likely  expenses  after the  Reorganization.
Combining the Funds should lower expenses because of economies of scale realized
from a larger asset base.

- --------------------------------------------------------------------------------
                             MANAGEMENT    DISTRIBUTION AND
                                FEES         SERVICE FEES       OTHER EXPENSES
- --------------------------------------------------------------------------------
Class of Shares ..........   All Classes   Class A   Class B   Class A   Class B
PRO FORMA - Diversified
Income including
Corporate Bond and
Limited Maturity Bond ....      0.35%       0.25%     1.00%     0.40%     0.40%
- --------------------------------------------------------------------------------

o  A voluntary  expense  waiver  arrangement is in place for each of the Limited
   Maturity Bond and Diversified Income Funds,  under which Security  Management
   waives its management fee. The expense waiver  arrangement is described below
   under the table "Annual Fund Operating  Expenses." The current expense waiver
   arrangement  for the Funds may be  terminated  by Security  Management at any
   time.

o  Security  Management  also  reimburses  expenses  of the Funds on a voluntary
   basis.  The expense  reimbursement  arrangement is described  below under the
   table "Annual Fund Operating Expenses." For the year ended December 31, 1999,
   Security  Management  reimbursed certain operating expenses of Class B shares
   of  Diversified  Income  and  Limited  Maturity  Bond Funds and Class A and B
   shares of Corporate Bond Fund. The current expense reimbursement  arrangement
   for the Funds may be terminated by Security Management at any time.

o  The current sales load structure for the each of the Funds is identical.  See
   the "Comparison of Fees and Expenses," page 12.

For  further  information  on fees and  expenses,  see  "Comparison  of Fees and
Expenses."

o  The Funds have the same investment manager, Security Management Company, LLC,
   700 SW Harrison Street, Topeka, Kansas. The Portfolio Manager for Diversified
   Income Fund is co-manager of the other Funds.

PURCHASE,  REDEMPTION, AND EXCHANGE INFORMATION -- The purchase,  redemption and
exchange  provisions  and  privileges for the Funds are the same. For additional
information on purchase,  redemption and exchange  procedures see "Comparison of
Fees and Expenses," page 12 and "More Information Regarding the Funds," page 20.

FEDERAL INCOME TAX CONSEQUENCES OF THE  REORGANIZATION  -- The Funds expect that
the  Reorganization  will be  considered  a tax-free  reorganization  within the
meaning of section  368(a)(1) of the Internal  Revenue Code of 1986,  as amended
(the  "Code").  As such you will not  recognize  gain or loss as a result of the
Reorganization. See "Information About The Reorganization - Tax Considerations."

COMPARISON OF RISKS INVOLVED IN INVESTING IN THE FUNDS

Because the Funds have similar investment objectives and policies,  the risks of
an investment in the Funds are substantially  similar.  The principal risk of an
investment  in one of the Funds is  fluctuation  in the net  asset  value of the
Fund's shares. Market conditions, investment policies, portfolio management, and
other factors affect such fluctuations.

Each Fund is subject to risks  associated  with  investing  in debt  securities,
including changes in interest rates,  credit risks,  prepayment risks, and risks
of mortgage-backed  securities,  foreign securities,  restricted  securities and
high yield securities as described below.

o  Investments in fixed-income  securities are subject to the  possibility  that
   interest rates could rise,  causing the value of the Funds'  securities,  and
   share  price,  to  decline.  Longer  term  bonds  and zero  coupon  bonds are
   generally  more sensitive to interest rate changes than  shorter-term  bonds.
   Generally, the longer the average maturity of the bonds in a Fund, the more a
   Fund's  share price will  fluctuate  in response  to interest  rate  changes.
   Accordingly,  Diversified Income Fund may be exposed to interest rate risk to
   a greater degree than Limited Maturity Bond Fund, as Diversified  Income Fund
   typically is expected to invest in debt securities with longer durations than
   the securities in which Limited Maturity Bond Fund typically invests. For the
   same reason,  Corporate  Bond Fund may be exposed to interest  rate risk to a
   greater degree than Diversified Income Fund.

o  It is possible  that some issuers of  fixed-income  securities  will not make
   payments  on  fixed  income  securities  held by a Fund,  or  there  could be
   defaults on repurchase  agreements held by a Fund. Also, an issuer may suffer
   adverse changes in financial condition that could lower the credit quality of
   a security, leading to greater volatility in the price of the security and in
   shares of a Fund.  A change in the  quality  rating of a bond can  affect the
   bond's liquidity and make it more difficult for the Fund to sell.

o  Each of the Funds may invest in mortgage-backed  securities,  and Diversified
   Income Fund may invest in asset-backed securities,  each of which can be paid
   off  early if the  borrowers  on the  underlying  obligations  pay off  their
   mortgages  sooner than  scheduled.  The issuers of securities  may be able to
   prepay  principal  due on the  securities,  particularly  during  periods  of
   declining  interest  rates.  Securities  subject to prepayment risk generally
   offer less potential for gains when interest  rates decline,  and may offer a
   greater  potential  for loss when interest  rates rise.  In addition,  rising
   interest rates may cause prepayments to occur at a slower than expected rate,
   thereby  effectively  lengthening the maturity of the security and making the
   security more sensitive to interest rate changes.  Prepayment risk is a major
   risk of mortgage-backed securities. Diversified Income Fund may be exposed to
   the risks of investing in  mortgage-backed  and asset-backed  securities to a
   greater degree than the other Funds,  as its  investments in such  securities
   are not subject to the same limitations  applicable to the Corporate Bond and
   Limited Maturity Bond Funds.

o  Mortgage-backed  securities  make  payments  that are part  interest and part
   return  of  principal.  These  payments  may vary  based on the rate at which
   homeowners pay off their loans. When a homeowner makes a prepayment, the Fund
   receives a larger portion of its principal  investment back, which means that
   there will be a decrease in monthly interest payments.  Some  mortgage-backed
   securities may have structures that make their reaction to interest rates and
   other factors difficult to predict, making their prices very volatile.

o  Diversified  Income  Fund may invest in total  return swap  agreements  which
   entail both  interest  rate risk and credit risk.  There is a risk,  based on
   movements of interest  rates in the future,  that  payments  made by the Fund
   under a swap agreement will be greater than the payments it received.  Credit
   risk arises from the possibility that the counterparty  will default.  If the
   counterparty  defaults,  the  Fund's  loss will  consist of the net amount of
   contractual interest payments that the Fund has not yet received.

o  Each Fund may invest in dollar-denominated foreign securities. Investments in
   foreign   securities   may  involve  risks  in  addition  to  those  of  U.S.
   investments, including increased political and economic risk.

o  Each Fund may invest in  securities  that are  restricted  as to  disposition
   under the federal  securities laws.  Since restricted  securities may be sold
   only in  privately  negotiated  transactions  or in a  public  offering  with
   respect to which a  registration  statement is in effect under the Securities
   Act,  their sale may entail  substantial  delays and the  liquidity  of these
   securities may be limited.

o  Each Fund may invest in higher  yielding,  high risk debt  securities.  These
   investments may present  additional risk because they may be less liquid than
   investment grade bonds. In addition, the price of high yield securities tends
   to be more  susceptible  to interest  rate  changes and to real or  perceived
   adverse economic and competitive industry  conditions.  High yield securities
   are subject to more credit risk than higher quality securities.

INVESTMENT OBJECTIVES AND POLICIES

COMPARISON OF OBJECTIVES  AND PRIMARY  INVESTMENT  STRATEGIES -- The  investment
objectives,  policies and restrictions of the Funds are similar,  although there
are certain  differences.  There can be no assurance  that any Fund will achieve
its stated objective.

INVESTMENT OBJECTIVE. The Funds have similar investment objectives and policies.

o  Corporate Bond Fund seeks to preserve capital while generating income.

o  Limited  Maturity  Bond Fund  seeks a high  level of income  consistent  with
   moderate price fluctuations.

o  Diversified Income Fund seeks to provide a high level of interest income with
   security of principal.

PRIMARY INVESTMENT STRATEGIES.

o  Each Fund primarily  invests in investment grade debt securities,  I.E. those
   which are rated BBB or higher  by  Standard  & Poor's  Corporation  or Baa or
   higher by Moody's Investors Service.

o  For each Fund, Security  Management,  the Funds' adviser,  uses a "bottom-up"
   approach in selecting asset classes and individual  securities for the Fund's
   portfolio.   A  bottom-up  approach  means  that  Security  Management  looks
   primarily  at  individual  issuers  against  the  context of  broader  market
   factors. When analyzing individual issuers,  Security Management may consider
   relative earnings growth, profitability trends, financial strength, valuation
   analysis and strength of management.  Security Management also considers cash
   flow, an issuer's position in its market, capital structure, general economic
   factors, and market conditions.

o  In  selecting  securities  for each Fund,  Security  Management  compares the
   credit  risk  and  yield  of a  security  to the  credit  risk  and  yield of
   securities of the same or another asset class, for example,  a corporate debt
   security versus a mortgage-backed security.

DIVERSIFIED INCOME FUND.

o  Generally,  Diversified  Income  Fund  invests  primarily  in  a  diversified
   portfolio of  investment  grade debt  securities.  Such debt  securities  are
   primarily domestic securities but may also include dollar denominated foreign
   securities.

o  Diversified  Income Fund seeks to diversify its holdings  among asset classes
   and  individual  securities.  Some of the asset classes in which the Fund may
   invest include  investment grade corporate debt  securities,  high yield debt
   securities  (also known as "junk bonds"),  investment  grade  mortgage-backed
   securities,   investment  grade  asset-backed  securities,   U.S.  Government
   securities and total return swap agreements.

CORPORATE BOND FUND.

o  Under  normal  conditions,   Corporate  Bond  Fund  invests  primarily  in  a
   diversified  portfolio of investment grade corporate debt  securities.  Under
   normal  circumstances,  Corporate  Bond Fund  holds at least 65% of its total
   assets in  corporate  debt  securities  which have at the time of  issuance a
   maturity  greater  than one year.  Such  securities  are  primarily  domestic
   securities but may also include dollar denominated foreign securities.

o  Corporate  Bond Fund seeks to diversify its holdings  among asset classes and
   individual securities. Some of the asset classes in which the Fund may invest
   include   investment  grade  corporate  debt  securities,   high  yield  debt
   securities (also known as "junk bonds"), mortgage-backed securities, and U.S.
   Government securities.

LIMITED MATURITY BOND FUND.

o  Under normal conditions,  Limited Maturity Bond Fund invests in a broad range
   of debt  securities  with  maturities  of 15  years  or  less.  Under  normal
   circumstances,  Limited  Maturity  Bond Fund  holds at least 65% of its total
   assets in short- to  intermediate-term  bonds  (those with  maturities  of 15
   years or less).  Such  securities are primarily  domestic  securities but may
   also include dollar denominated foreign securities.

o  Limited  Maturity  Bond Fund seeks to  diversify  its  holdings  among  asset
   classes and  individual  securities.  Some of the asset  classes in which the
   Fund may invest include  investment  grade  corporate debt  securities,  high
   yield  debt  securities   (also  known  as  "junk  bonds"),   mortgage-backed
   securities, and U.S. Government securities.

DURATION/MATURITY.

o  Diversified  Income  Fund  is  expected  to  have a  dollar-weighted  average
   duration of 4 to 10 years.

o  Corporate Bond Fund is expected to have a  dollar-weighted  average  maturity
   between 5 and 15 years.

o  Limited Maturity Bond Fund's dollar-weighted  average maturity is expected to
   be between 2 and 10 years.

Following the  Reorganization and in the ordinary course of business as a mutual
fund, certain holdings of the Corporate Bond Fund and Limited Maturity Bond Fund
that were  transferred  to the  Diversified  Income Fund in connection  with the
Reorganization  may be sold.  Such sales may result in  increased  transactional
costs for  Diversified  Income Fund,  and the  realization  of taxable  gains or
losses.

COMPARISON OF PORTFOLIO  CHARACTERISTICS -- The following tables compare certain
characteristics of the portfolios of the Funds as of December 31, 1999:

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------
                                                                DIVERSIFIED       CORPORATE      LIMITED MATURITY
                                                                INCOME FUND*      BOND FUND          BOND FUND
- -----------------------------------------------------------------------------------------------------------------
<S>                                                             <C>              <C>                <C>
Net Assets                                                      $15,078,186      $58,614,431        $6,895,312
- -----------------------------------------------------------------------------------------------------------------
Number of Holdings                                                   35               97                97
- -----------------------------------------------------------------------------------------------------------------
Average Credit Quality                                              AAA               A                 A+
- -----------------------------------------------------------------------------------------------------------------
Portfolio Turnover Rate (12 months ended 12/31/99)                  65%              36%                31%
- -----------------------------------------------------------------------------------------------------------------
As a percentage of net assets:
o  Treasury bonds, bills and notes                                  4.3%             7.8%                0
o  Mortgage-Related Securities                                     43.0%            27.8%              19.8%
o  U.S. Gov. Securities not backed by full faith and credit        49.4%             2.1%               3.0%
o  Corporate Debt                                                    0              61.0%              75.7%
o  Others Assets and Liabilities, net                               3.3%             1.3%               1.5%
- -----------------------------------------------------------------------------------------------------------------
</TABLE>


                     TOP 10 HOLDINGS (AS A % OF NET ASSETS)

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------
DIVERSIFIED INCOME FUND*       CORPORATE BOND FUND            LIMITED MATURITY BOND FUND
- -----------------------------------------------------------------------------------------
<S>                    <C>     <C>                    <C>     <C>                    <C>
FNMA 6.5% due 2004     6.6%    U.S. treasury note     2.8%    FNMA 6.5% due 2004     3.6%
                               5.75% due 2003
- -----------------------------------------------------------------------------------------
GNMA 7.5% due 2029     6.5%    GNMA 7.5% due 2029     2.6%    FNMA 6.25% due 2004    3.5%
- -----------------------------------------------------------------------------------------
Fed. Home Loan Mort.   6.4%    Chase Commercial       2.5%    Province of Quebec     2.3%
Note 6.63% due 2009            Mort. Secs. Corp               8.63% due 2005
- -----------------------------------------------------------------------------------------
GNMA 6.5% due 2028     4.7%    FNMA 6.38%             2.4%    Vastar Resources       2.3%
                                                              8.75% due 2005
- -----------------------------------------------------------------------------------------
GNMA 7% due 2026       4.4%    S I Financing Trust    2.1%    Household Finance      2.2%
                               9.5% due 2026                  Corp. 8% due 2004
- -----------------------------------------------------------------------------------------
U.S. treasury bond     4.3%    HUD 6.93% due 2013     2.1%    Int'l Lease Finance    2.2%
8.75% due 2008                                                Corp. 8.25% due 2000
- -----------------------------------------------------------------------------------------
Financing Corp.        4.1%    Panamerican Beverage   2.0%    GNMA 7% due 2028       2.2%
9.65% due 2018                 8.13% due 2003
- -----------------------------------------------------------------------------------------
FNMA 7.4% due 2004     4.1%    United Airlines        1.9%    Consol. Edison Co.     2.2%
                               11.21% due 2014                6.63% due 2002
- -----------------------------------------------------------------------------------------
FNMA 7.875% due 2024   3.5%    Anhueser Busch 7.1%    1.9%    Sears Roebuck          2.1%
                               due 2007                       Acceptance 6.41%
                                                              due 2001
- -----------------------------------------------------------------------------------------
GNMA 7.5% due 2034     3.4%    Abbey National PLC     1.9%    Freddie Mac 5.75%      2.1%
                               6.69% due 2005                 due 2003
- -----------------------------------------------------------------------------------------
</TABLE>

*The  Board of  Directors  of  Security  Income  Fund  approved  a change in the
 investment  policies of Diversified  Income Fund,  effective  February 4, 2000.
 Prior to that  change,  the Fund had a policy of  investing at least 80% of its
 total assets in U.S. Government  securities.  The Fund may now invest in a more
 diversified portfolio of debt securities,  including investment grade corporate
 debt  securities,  high yield debt  securities  (also  known as "junk  bonds"),
 investment grade  mortgage-backed  securities,  investment  grade  asset-backed
 securities, U.S. Government securities and total return swap agreements.

RELATIVE  PERFORMANCE -- The following table shows, for each calendar year since
1990,  the average  annual  total  return for (a) Class A shares of  Diversified
Income Fund,  (b) Class A shares of Corporate  Bond Fund,  (c) Class A shares of
Limited  Maturity Bond Fund, (d) the Lehman Brothers  Aggregate Bond Index,  (e)
the Lehman  Brothers  Government Bond Index,  (f) the Lehman Brothers  Corporate
Bond Index, and (g) the Lehman Brothers  Intermediate Term Corporate Bond Index.
Performance  of the Funds in the table below does not reflect the  deduction  of
sales loads. The Lehman Brothers Indexes have an inherent performance  advantage
over the  Funds,  since an index  has no cash in its  portfolio,  and  incurs no
operating  expenses.  An investor  cannot  invest in an index.  Total  return is
calculated assuming reinvestment of all dividends and capital gain distributions
at net asset value and excluding the deduction of any sales charges.

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                         LEHMAN BROTHERS
                                                LIMITED      -----------------------------------------------------------------------
CALENDAR YEAR/    DIVERSIFIED     CORPORATE     MATURITY       AGGREGATE      GOVERNMENT       CORPORATE        INTERMEDIATE TERM
 PERIOD ENDED    INCOME FUND(1)   BOND FUND   BOND FUND(2)   BOND INDEX(3)   BOND INDEX(4)   BOND INDEX(5)   CORPORATE BOND INDEX(6)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                  <C>            <C>          <C>            <C>             <C>             <C>                  <C>
   12/31/90           9.8%           6.6%         N/A            8.95%           8.72%           7.06%                7.62%
   12/31/91          13.8%          16.1%         N/A           16.00%          15.33%          18.52%               16.61%
   12/31/92           5.0%           9.0%         N/A            7.40%           7.23%           8.69%                8.19%
   12/31/93          10.9%          13.4%         N/A            9.75%          10.66%          12.17%               11.13%
   12/31/94          -6.5%          -8.3%         N/A           -2.92%          -3.37%          -3.92%               -2.65%
   12/31/95          21.9%          18.2%        13.0%          18.48%          18.33%          22.24%               19.01%
   12/31/96           1.3%          -0.5%         2.1%           3.61%           2.77%           3.28%                3.98%
   12/31/97           9.2%           9.7%         9.0%           9.68%           9.58%          10.23%                8.38%
   12/31/98           9.1%           7.6%         7.5%           8.67%           9.85%           8.59%                8.30%
   12/31/99          -3.6%          -3.7%        -1.8%          -0.83%          -2.25%          -1.94%                0.16%
- ------------------------------------------------------------------------------------------------------------------------------------
<FN>
(1)  Prior to February 4, 2000, the  Diversified  Income Fund was named the "U.S.  Government  Fund" and,  under normal  conditions,
     invested at least 80% of the value of its total assets in U.S. Government securities.

(2)  From the Limited Maturity Bond Fund's inception on November 7, 1995.

(3)  The Lehman Brothers Aggregate Bond Index is comprised of debt securities which include U.S.  Government  securities,  corporate
     debt securities, asset-backed securities, mortgage-backed securities and total return swaps.

(4)  The Lehman Brothers  Government Bond Index is comprised of public obligations of the U.S. Treasury with maturities of more than
     one year and publicly issued debt of U.S. Government Agencies.

(5)  The Lehman  Brothers  Corporate  Bond Index is comprised of publicly  issued U.S.  corporate and Yankee  debentures and secured
     notes.

(6)  The Lehman Brothers Intermediate Term Corporate Bond Index is a subset of the Lehman Brothers Corporate Bond Index comprised of
     securities of shorter maturities.
</FN>
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

COMPARISON OF SECURITIES AND INVESTMENT TECHNIQUES -- The following is a summary
of the types of  securities  in which the Funds may  invest and  strategies  the
Funds  may  employ  in  pursuit  of  their  investment  objectives.  As with any
security,  an investment in a Fund's shares  involves  certain risks,  including
loss of principal. The Funds are subject to varying degrees of financial, market
and credit risk.  An  investment  in the Funds is not a deposit of a bank and is
not insured by the Federal Deposit Insurance Corporation or any other government
agency.

CONVERTIBLE  SECURITIES.  Each  Fund  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.

FOREIGN SECURITIES.  Each Fund may invest up to 25% of its net assets in foreign
securities  denominated in U.S. dollars.  Foreign investments  increase a Fund's
diversification  and may enhance  return,  but they also  involve  some  special
risks,  such as exposure to  potentially  adverse  local  political and economic
developments; nationalization and exchange controls; potentially lower liquidity
and  higher   volatility;   and  possible   problems  arising  from  accounting,
disclosure, settlement and regulatory practices that differ from U.S. standards.
These risks are heightened for investments in developing countries.

ASSET-BACKED  SECURITIES.  Each of Corporate Bond Fund and Limited Maturity Bond
Fund may invest up to 15% of its total assets, and Diversified Income Series may
invest without limit, in investment grade asset-backed securities. An underlying
pool of assets, such as credit card receivables,  automobile loans, or corporate
loans or bonds back these bonds and provides the interest and principal payments
to  investors.  On  occasion,  the  pool  of  assets  may  also  include  a swap
obligation,  which is used to change the cash flows on the underlying assets. As
an  example,  a swap may be used to allow  floating  rate assets to back a fixed
rate  obligation.  Credit  quality  depends  primarily  on  the  quality  of the
underlying assets, the level of credit support,  if any, provided by the issuer,
and the credit quality of the swap  counterparty,  if any. The underlying assets
(i.e.,  loans) are subject to  prepayments,  which can  shorten the  securities'
weighted average life and may lower their return.  The value of these securities
also may change because of actual or perceived  changes in the  creditworthiness
of the originator,  the servicing  agent,  the financial  institution  providing
credit support, or swap counterparty.

MORTGAGE-BACKED  SECURITIES.  Each of Corporate  Bond Fund and Limited  Maturity
Bond Fund may invest up to 35% of its total assets,  and Diversified Income Fund
may invest without limit, in a variety of mortgage-backed  securities.  Mortgage
lenders pool  individual home mortgages with similar  characteristics  to back a
certificate or bond, which is sold to investors such as the Funds.  Interest and
principal payments  generated by the underlying  mortgages are passed through to
the investors.  The three largest issuers of these securities are the Government
National Mortgage  Association (GNMA), the Federal National Mortgage Association
(Fannie Mae) and the Federal Home Loan Mortgage  Corporation (Freddie Mac). GNMA
certificates  are backed by the full  faith and  credit of the U.S.  Government,
while  others,  such as  Fannie  Mae and  Freddie  Mac  certificates,  are  only
supported by the ability to borrow from the U.S.  Treasury or supported  only by
the credit of the agency.  Private mortgage bankers and other  institutions also
issue  mortgage-backed  securities.  Mortgage-backed  securities  are subject to
scheduled and  unscheduled  principal  payments as homeowners pay down or prepay
their  mortgages.  As these payments are received,  they must be reinvested when
interest  rates may be higher or lower than on the original  mortgage  security.
Therefore,  these  securities are not an effective means of locking in long-term
interest  rates.  In addition,  when interest  rates fall,  the pace of mortgage
prepayments  picks up.  These  refinanced  mortgages  are paid off at face value
(par),  causing a loss for any investor who may have purchased the security at a
price above par. In such an  environment,  this risk limits the potential  price
appreciation  of these  securities and can negatively  affect a Fund's net asset
value. When rates rise, the prices of mortgage-backed securities can be expected
to decline,  although  historically  these securities have  experienced  smaller
price declines than comparable  quality bonds. In addition,  when rates rise and
prepayments slow, the effective duration of mortgage-backed  securities extends,
resulting in increased volatility.

Additional  mortgage-backed  securities  in which the Funds may  invest  include
COLLATERALIZED  MORTGAGE  OBLIGATIONS  (CMOs) and stripped mortgage  securities.
CMOs are debt  securities  that  are  fully  collateralized  by a  portfolio  of
mortgages or  mortgage-backed  securities.  All interest and principal  payments
from the underlying mortgages are passed through to the CMOs in such a way as to
create,  in most  cases,  more  definite  maturities  than is the case  with the
underlying  mortgages.  CMOs may pay fixed or variable  rates of  interest,  and
certain  CMOs  have  priority  over  others  with  respect  to  the  receipt  of
prepayments.  Stripped  mortgage  securities  (a type of  potentially  high-risk
derivative)  are created by  separating  the  interest  and  principal  payments
generated by a pool of mortgage-backed  securities or a CMO to create additional
classes of  securities.  Generally,  one class  receives only interest  payments
(IOs)  and  another  receives  principal  payments  (POs).   Unlike  with  other
mortgage-backed  securities  and POs, the value of IOs tends to move in the same
direction as interest  rates.  The fund can use IOs as a hedge  against  falling
prepayment  rates (interest rates are rising) and/or a bear market  environment.
POs can be used as a hedge against rising  prepayment  rates (interest rates are
falling) and/or a bull market environment.  IOs and POs are acutely sensitive to
interest  rate  changes  and to the rate of  principal  prepayments.  A rapid or
unexpected  increase in prepayments can severely depress the price of IOs, while
a rapid or unexpected decrease in prepayments could have the same effect on POs.
These  securities  are very volatile in price and may have lower  liquidity than
most  other  mortgage-backed  securities.  Certain  non-stripped  CMOs  may also
exhibit these  qualities,  especially  those that pay variable rates of interest
that adjust inversely with, and more rapidly than, short-term interest rates. In
addition,  if interest  rates rise rapidly and  prepayment  rates slow more than
expected, certain CMOs, in addition to losing value, can exhibit characteristics
of  longer-term  securities  and become more  volatile.  There is no guarantee a
Fund's  investment in CMOs,  IOs, or POs will be successful,  and a Fund's total
return could be adversely  affected as a result.  Each Fund may invest up to 10%
of its net  assets  in IOs,  POs,  inverse  floating  obligations  and  residual
interest bonds.

RESTRICTED  SECURITIES.  Each Fund may invest in restricted  securities that are
eligible  for  resale  under  Rule  144A of the  Securities  Act of 1933.  These
securities   are  sold  directly  to  a  small  number  of  investors,   usually
institutions.  Unlike public offerings, restricted securities are not registered
with the SEC. Although restricted securities which are eligible for resale under
Rule 144A may be readily  sold to  qualified  buyers,  there may not always be a
market for them and their sale may  involve  substantial  delays and  additional
costs. In addition,  the Funds may invest in restricted  securities that are not
eligible for resale under Rule 144A. Because there is no active market for these
types of securities,  selling a security that is not a Rule 144A security may be
difficult  and/or may involve expenses that would not be incurred in the sale of
securities that were freely marketable.

LOWER-RATED  DEBT  SECURITIES.  Each 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").  The total return and yield of
junk bonds can be expected to fluctuate  more than the total return and yield of
higher-quality  bonds.  Junk bonds  (those  rated below BBB or in  default)  are
regarded as predominantly  speculative  with respect to the issuer's  continuing
ability to meet  principal  and  interest  payments.  Successful  investment  in
lower-medium-  and  low-quality  bonds involves  greater  investment risk and is
highly dependent on Security  Management's credit analysis.  A real or perceived
economic  downturn or higher  interest rates could cause a decline in high-yield
bond prices by lessening  the ability of issuers to make  principal and interest
payments.  These bonds are often thinly traded and can be more difficult to sell
and value accurately than high-quality bonds. Because objective pricing data may
be less available, judgment may play a greater role in the valuation process. In
addition,  the entire  junk bond  market can  experience  sudden and sharp price
swings due to a variety of factors,  including  changes in  economic  forecasts,
stock  market  activity,   large  or  sustained  sales  by  major  investors,  a
high-profile default, or just a change in the market's psychology.  This type of
volatility  is usually  associated  more with stocks  than bonds,  but junk bond
investors should be prepared for it.

U.S. GOVERNMENT  SECURITIES.  Each Fund may invest in U.S. Government securities
and  Diversified  Income  Fund will  invest  at least  35% of its net  assets in
securities  issued  by  the  U.S.  or  Canadian  Governments.   U.S.  Government
securities  include  direct  obligations  of the  U.S.  Treasury  (such  as U.S.
Treasury bills,  notes and bonds) and  obligations  issued or guaranteed by U.S.
Government  agencies  or  instrumentalities.  While U.S.  Government  securities
provide  substantial  protection  against  credit  risk,  they  do  not  protect
investors  against price  declines in the  securities  due to changing  interest
rates. Additionally,  obligations of some U.S. Government agencies, such as FNMA
and FHLMC,  are not backed by the full faith and credit of the U.S.  Government,
and are subject to somewhat  greater credit risk than direct  obligations of the
U.S. Treasury.

ILLIQUID  SECURITIES.  Each  Fund  may  invest  up to 15% of its net  assets  in
illiquid securities, which do not include restricted securities that are readily
marketable.  Generally,  a  security  is  considered  illiquid  if it  cannot be
disposed of within seven days at approximately the value at which it is carried.
Illiquidity  might  prevent the sale of the  security at a time when the adviser
might wish to sell, and these securities could have the effect of decreasing the
overall  level  of a  Fund's  liquidity.  Further,  the  lack of an  established
secondary market may make it more difficult to value illiquid securities.

SWAPS, CAPS, FLOORS AND COLLARS. Diversified Income Fund may enter into interest
rate,  total  return and index swaps.  Diversified  Income Fund would enter into
these  transactions  primarily  to  preserve a return or spread on a  particular
investment  or  portion  of  its  portfolio  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. To the extent the  Diversified  Income
Fund enters into these types of  transactions,  it will be done to hedge and not
as a  speculative  investment,  and the Fund 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 on a notional  amount of principal.  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.

FUTURES AND OPTIONS.  Diversified Income Fund may utilize futures contracts. The
Diversified  Income Fund may also utilize  options on futures,  and may purchase
call and put  options  and write  call and put  options  on a  "covered"  basis.
Futures (a type of potentially high-risk derivative) are often used to manage or
hedge  risk  because  they  enable the  investor  to buy or sell an asset in the
future at an agreed-upon price.  Options (another type of potentially  high-risk
derivative)  give the  investor  the right  (where the  investor  purchases  the
options),  or the obligation (where the investor writes (sells) the options), to
buy or sell an asset at a predetermined price in the future. Futures and options
contracts may be bought or sold for any number of reasons,  including: to manage
exposure to changes in interest rates and bond prices;  as an efficient means of
adjusting  overall exposure to certain markets;  in an effort to enhance income;
to protect the value of portfolio securities;  and to adjust portfolio duration.
The Diversified Income Fund may purchase, sell, or write call and put options on
securities and financial  indices.  Futures contracts and options may not always
be  successful  hedges;  their prices can be highly  volatile.  Using them could
lower the Fund's total return,  and the  potential  loss from the use of futures
can exceed the Fund's initial investment in such contracts.

WHEN-ISSUED SECURITIES AND FORWARD COMMITMENT CONTRACTS.  Each Fund may purchase
and  sell  securities  on a "when  issued,"  "forward  commitment"  or  "delayed
delivery"  basis.  The  price  of these  securities  is fixed at the time of the
commitment  to buy,  but  delivery  and  payment  can take place a month or more
later.  During the  interim  period,  the  market  value of the  securities  can
fluctuate,  and no interest  accrues to the purchaser.  At the time of delivery,
the value of the securities may be more or less than the purchase or sale price.
When a Fund  purchases  securities  on this  basis,  there  is a risk  that  the
securities may not be delivered and that the Fund may incur a loss.

BORROWING.  Each Fund may borrow  money from banks as a  temporary  measure  for
emergency purposes,  to facilitate  redemption  requests,  or for other purposes
consistent with the Fund's investment objective and program. Such borrowings may
be  collateralized  with  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 the 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.

COMPARISON OF FEES AND EXPENSES

The  following  describes and compares the fees and expenses that you may pay if
you buy and hold shares of the Funds.  It is expected  that  combining the Funds
would allow shareholders to realize economies of scale. For further  information
on the fees and  expenses of  Diversified  Income  Fund,  see "More  Information
Regarding the Funds," page 20.

OPERATING  EXPENSES  -- The  total  fund  operating  expenses  of each  class of
Corporate  Bond Fund,  expressed  as a ratio of  expenses  to average  daily net
assets ("expense ratio"),  before taking into account the expense  reimbursement
arrangement,  currently are lower than the expenses of the corresponding classes
of Diversified  Income Fund. The expense ratio of each class of Limited Maturity
Bond Fund,  before taking into account the management  fee waiver,  currently is
higher than that of the corresponding classes of Diversified Income Fund.

o  After a  voluntary  management  fee waiver by  Security  Management,  the net
   expense ratio for the Class A shares of Diversified  Income Fund for the year
   ended  December 31, 1999,  was lower by 0.22% than that of the Class A shares
   of the  Corporate  Bond Fund and was higher by 0.10% than that of the Class A
   shares of the Limited Maturity Bond Fund.

o  After a  voluntary  management  fee waiver by  Security  Management,  the net
   expense ratio for the Class B shares of Diversified  Income Fund for the year
   ended December 31, 1999 was the same as the net expense ratio for the Class B
   shares of Corporate Bond Fund and Limited Maturity Bond Fund.

o  The  management  fee for the  Diversified  Income  Fund  was the  same as the
   management  fee for  Corporate  Bond and Limited  Maturity Bond Funds for the
   year ended December 31, 1999.  Effective February 4, 2000, the management fee
   for the  Diversified  Income Fund was 0.15% lower than that of Corporate Bond
   and Limited Maturity Bond Funds.

o  The fees for  distribution and shareholder  servicing for Diversified  Income
   Fund are the same as Corporate Bond and Limited Maturity Bond Funds.

It is expected that combining the Funds will adjust the operating  expense ratio
to a lower level than the  operating  expense ratio of any of the Funds prior to
the  Reorganization.  For more information,  see estimated PRO FORMA expenses in
the table, "Annual Fund Operating Expenses."

An expense  waiver  arrangement  is in place for Limited  Maturity Bond Fund and
Diversified  Income Fund, under which Security  Management waives its management
fee for each such Fund. The expense waiver  arrangement is described below under
the  table  "Annual  Fund  Operating   Expenses."  The  current  expense  waiver
arrangement for Limited  Maturity Bond Fund and  Diversified  Income Fund may be
terminated at any time by Security Management.

An  expense  reimbursement  arrangement  is in place for the Funds  under  which
Security  Management  reimburses  certain  operating  expenses of the Funds on a
voluntary basis. The expense reimbursement  arrangement is described below under
the table "Annual Fund Operating  Expenses." The current  expense  reimbursement
arrangement may be terminated at any time by Security Management.

The current expenses of each Fund and estimated PRO FORMA expenses giving effect
to the proposed  Reorganization  are shown in the table below.  Expenses for the
Funds are based on the operating  expenses  incurred for the year ended December
31, 1999,  except that the management fee for  Diversified  Income Fund is based
upon the fee in effect as of February 4, 2000.  PRO FORMA fees and expenses show
estimated  fees and expenses of  Diversified  Income Fund after giving effect to
the proposed  Reorganization.  PRO FORMA numbers are estimated in good faith and
are hypothetical.

<TABLE>
- ---------------------------------------------------------------------------------------------------------------
ANNUAL FUND OPERATING EXPENSES
(expenses that are deducted from Fund assets, shown as a ratio of expenses to average daily net assets)(1)
- ---------------------------------------------------------------------------------------------------------------
<CAPTION>
                                                                DISTRIBUTION AND                    TOTAL FUND
                                              MANAGEMENT     SHAREHOLDER SERVICING      OTHER        OPERATING
                                                 FEES           (12B-1) FEES(2)        EXPENSES     EXPENSES(3)
<S>                                             <C>                  <C>                <C>            <C>
CLASS A

Diversified Income Fund .....................   0.35%                0.25%              0.62%          1.22%
Corporate Bond Fund .........................   0.50%                0.25%              0.35%          1.10%
Limited Maturity Bond Fund ..................   0.50%                0.25%              0.52%          1.27%
PRO FORMA - Diversified Income including
Corporate Bond and Limited Maturity Bond ....   0.35%                0.25%              0.40%          1.00%

CLASS B

Diversified Income Fund .....................   0.35%                1.00%              0.86%          2.21%
Corporate Bond Fund .........................   0.50%                1.00%              0.65%          2.15%
Limited Maturity Bond Fund ..................   0.50%                1.00%              0.91%          2.41%
PRO FORMA - Diversified Income including
Corporate Bond and Limited Maturity Bond ....   0.35%                1.00%              0.40%          1.75%
- ---------------------------------------------------------------------------------------------------------------
<FN>
(1)  Expenses are shown for each Fund, and on a pro forma basis,  based upon expenses incurred by each Fund for
     the 12 months ended December 31, 1999, except that the management fee for Diversified Income Fund is based
     upon the fee in effect as of February 4, 2000.  Effective on that date, the Board of Directors of Security
     Income Fund approved an amendment to the investment  advisory agreement with Security Management to reduce
     the management fee for Diversified Income Fund from 0.50% to 0.35%.

(2)  As a result of  distribution  (Rule  12b-1)  fees,  a long term  investor  may pay more than the  economic
     equivalent  of the maximum  sales charge  allowed by the Rules of the National  Association  of Securities
     Dealers, Inc. (NASD).

(3)  Each Fund's total  annual  operating  expenses  for the most recent  fiscal year were less than the amount
     shown, because of voluntary fee waivers and/or reimbursements by Security Management.  Security Management
     has  waived  its  management  fee for  Limited  Maturity  Bond Fund and  Diversified  Income  Fund and has
     reimbursed  certain  operating  expenses of Class B shares of Limited  Maturity Bond Fund and  Diversified
     Income Fund and Class A and B shares of Corporate Bond Fund. After the waiver, the management fee would be
     0.00% and the total  fund  operating  expenses  would be 0.77% for Class A and 1.85% for Class B shares of
     Limited  Maturity  Bond Fund and  would be 0.87%  for Class A and 1.85% for Class B shares of  Diversified
     Income Fund. After the expense reimbursement, the total fund operating expenses would be 1.09% for Class A
     shares and 1.85% for Class B shares of  Corporate  Bond Fund.  The fee  waiver and  expense  reimbursement
     arrangements are voluntary and not contractual  commitments,  and can be terminated by Security Management
     at any time.
</FN>
- ---------------------------------------------------------------------------------------------------------------
</TABLE>

EXAMPLE.

This  example is intended to help you compare the cost of investing in the Funds
and in the  combined  Funds on a PRO FORMA basis.  The example  assumes that you
invest $10,000 in each Fund and in the surviving  Fund after the  Reorganization
for the time periods indicated. For each Fund, expenses prior to a voluntary fee
waiver or reimbursement by Security  Management are presented.  The Example also
assumes  that  your  investment  has a 5% return  each year and that the  Fund's
operating  expenses  remain the same.  The 5% return is an assumption and is not
intended  to  portray  past or  future  investment  results.  Based on the above
assumptions, you would pay the following expenses if you redeemed your shares at
the end of such period shown; your actual costs may be higher or lower.

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                   1 YEAR                3 YEARS                5 YEARS               10 YEARS*
                                             ------------------     ------------------     ------------------     ------------------
                                             CLASS A    CLASS B     CLASS A    CLASS B     CLASS A    CLASS B     CLASS A    CLASS B
<S>                                           <C>        <C>         <C>       <C>         <C>        <C>         <C>        <C>
Corporate Bond Fund ......................    $582       $718        $808      $  973      $1,052     $1,354      $1,752     $2,212
Limited Maturity Bond Fund ...............     598        744         859       1,051       1,139      1,485       1,936      2,459
Diversified Income Fund ..................     593        724         844         991       1,113      1,385       1,882      2,290
PRO FORMA - Diversified Income including
Corporate Bond and Limited Maturity Bond..     572        678         778         851       1,001      1,149       1,641      1,864
- ------------------------------------------------------------------------------------------------------------------------------------
<FN>
*The ten year  calculations  for Class B shares  assume  conversion of the Class B shares to Class A shares at the end of the eighth
 year following the date of purchase.
</FN>
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

You would pay the following expenses if you did not redeem your shares:

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                   1 YEAR                3 YEARS                5 YEARS               10 YEARS*
                                             ------------------     ------------------     ------------------     ------------------
                                             CLASS A    CLASS B     CLASS A    CLASS B     CLASS A    CLASS B     CLASS A    CLASS B
<S>                                           <C>        <C>         <C>        <C>        <C>        <C>         <C>        <C>
Corporate Bond Fund ......................    $582       $218        $808       $673       $1,052     $1,154      $1,752     $2,212
Limited Maturity Bond Fund ...............     598        244         859        751        1,139      1,285       1,936      2,459
Diversified Income Fund ..................     593        224         844        691        1,113      1,185       1,882      2,290
PRO FORMA - Diversified Income including
Corporate Bond and Limited Maturity Bond..     572        178         778        551        1,001        949       1,641      1,864
- ------------------------------------------------------------------------------------------------------------------------------------
<FN>
*The ten year  calculations  for Class B shares  assume  conversion of the Class B shares to Class A shares at the end of the eighth
 year following the date of purchase.
</FN>
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

GENERAL  INFORMATION  -- Class A and Class B shares of  Diversified  Income Fund
issued to a shareholder in connection with the Reorganization will be subject to
the  same  contingent   deferred  sales  charge,  if  any,   applicable  to  the
corresponding  shares of Corporate Bond Fund and Limited Maturity Bond Fund held
by that shareholder immediately prior to the Reorganization.

In addition,  the period that the shareholder held shares of Corporate Bond Fund
and  Limited  Maturity  Bond Fund would be  included  in the  holding  period of
Diversified  Income  Fund  shares for  purposes of  calculating  any  contingent
deferred  sales  charge.  Similarly,  Class B shares of Corporate  Bond Fund and
Limited  Maturity  Bond Fund  issued to a  shareholder  in  connection  with the
Reorganization  will  convert to Class A shares  eight years after the date that
the  corresponding  Class B shares of Corporate  Bond Fund and Limited  Maturity
Bond Fund were purchased by the shareholder.  Purchases of shares of Diversified
Income Fund after the Reorganization will be subject to the sales load structure
described in the table below for Diversified Income Fund. This is the same sales
load  structure  that is currently in effect for Corporate Bond Fund and Limited
Maturity Bond Fund.

- --------------------------------------------------------------------------------
TRANSACTION FEES ON NEW INVESTMENTS (fees paid directly from your investment)
- --------------------------------------------------------------------------------
                                                          CLASS A     CLASS B(1)
Maximum sales charge (load) imposed on purchases
(as a percentage of offering price) ...................    4.75%        None

Maximum deferred sales charge (load)
(as a percentage of the lower of
original purchase price or redemption proceeds) .......   None(2)      5.00%(3)
- --------------------------------------------------------------------------------
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 deferred sales charge of 1% is imposed
   in the event of redemption within one year of purchase.

3  The deferred  sales charge is 5% during the first year,  4% during the second
   year,  3%  during  the  third and  fourth  years  and 2% in the  fifth  year,
   decreasing to 0% in the sixth and following years.
- --------------------------------------------------------------------------------

None of the Funds has any  redemption  fees,  exchange  fees or sales charges on
reinvested dividends.

ADDITIONAL INFORMATION ABOUT DIVERSIFIED INCOME FUND

INVESTMENT MANAGER -- Security Management,  each Fund's investment manager, is a
Kansas limited liability company.  On December 31, 1999, the aggregate assets of
all of the mutual funds under the investment  management of Security  Management
were approximately $6.3 billion.  Security Management has overall responsibility
for the management of the Funds.  Security  Income Fund and Security  Management
have entered into an agreement  that  requires  Security  Management  to provide
investment advisory,  statistical and research services to the Funds,  supervise
and arrange for the purchase and sale of securities on behalf of the Funds,  and
provide  for the  maintenance  and  compilation  of  records  pertaining  to the
investment  advisory  function.  The agreement  with Security  Management can be
canceled by the Board of Directors of Security  Income Fund upon 60 days written
notice.  Investment  management  fees are  computed  and accrued  daily and paid
monthly.

INVESTMENT  PERSONNEL -- The following  individuals have  responsibility for the
day-to-day management of the Funds:

o  Steve Bowser,  Vice President and Portfolio  Manager of Security  Management,
   has managed the  Diversified  Income Fund's  portfolio since 1995. Mr. Bowser
   has also  co-managed the Corporate  Bond Fund and Limited  Maturity Bond Fund
   portfolios  since June 1997. Mr. Bowser joined  Security  Management in 1992.
   Prior to joining  Security  Management,  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.  He is a
   Chartered Financial Analyst.

o  David  Eshnaur,  Second  Vice  President  and  Portfolio  Manager of Security
   Management,  has co-managed the Corporate Bond Fund and Limited Maturity Bond
   Fund  portfolios  since June 1997.  Mr.  Eshnaur  has 15 years of  investment
   experience.  Prior to  joining  Security  Management  in 1997,  he  worked at
   Waddell  & Reed in the  positions  of  Assistant  Vice  President,  Assistant
   Portfolio   Manager,   Senior   Analyst,   Industry   Analyst   and   Account
   Administrator.  Mr.  Eshnaur  earned a bachelor  of arts  degree in  Business
   Administration  from Coe  College  and an M.B.A.  degree in Finance  from the
   University of Missouri - Kansas City.

PERFORMANCE  OF  DIVERSIFIED  INCOME FUND -- The bar chart and table shown below
provide an indication of the risks of investing in the  Diversified  Income Fund
by showing  (on a calendar  year basis)  changes in  Diversified  Income  Fund's
annual total return from year to year and by showing (on a calendar  year basis)
how  Diversified  Income Fund's average annual returns for one year,  five years
and ten years  compare to those of  abroad-based  securities  market  index--the
Lehman  Brothers  Government  Bond Index.  The  information in the bar chart and
table reflects the Fund's  performance  prior to its recent change of investment
policies.  The  information in the bar chart is based on the  performance of the
Class A shares of  Diversified  Income  Fund,  although  the bar chart  does not
reflect  the  deduction  of the sales  load on Class A shares.  If the bar chart
included the sales load, returns would be less than those shown. The Fund's past
performance is not an indication of how the Fund will perform in the future.

                  [BAR GRAPH PLOTTED FROM DATA IN TABLE BELOW]

1990     1991    1992     1993    1994     1995    1996    1997    1998    1999
- ----     ----    ----     ----    ----     ----    ----    ----    ----    ----
9.80%   13.80%   5.00%   10.90%  -6.50%   21.86%   1.26%   9.19%   9.09%  -3.60%

*During the period shown in the chart, the Fund's best quarterly performance was
 7.34% for the  quarter  ended June 30,  1995,  and the Fund's  worst  quarterly
 performance was -3.92% for the quarter ended March 31, 1994.

The table below shows the average  annual total  returns of  Diversified  Income
Fund if you  average  out  actual  performance  over  various  lengths  of time,
compared to the Lehman Brothers  Government  Bond Index, an unmanaged  index. An
index has an inherent  performance  advantage over the  Diversified  Income Fund
since it has no cash in its  portfolio,  imposes no sales  charges and incurs no
operating  expenses.  An  investor  cannot  invest  directly  in an  index.  The
Diversified  Income  Fund's  performance  reflected  in the  table  assumes  the
deduction of the maximum sales charge in all cases.

<TABLE>
- --------------------------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS for the periods ended December 31, 1999
- --------------------------------------------------------------------------------------------------
<CAPTION>
                                                                                   SINCE INCEPTION
                                                                                     OF CLASS B
                                               1 YEAR     5 YEARS     10 YEARS       (10/19/93)
<S>                                            <C>         <C>         <C>              <C>
Diversified Income, Class A(1) .............   -8.23%      6.17%       6.35%             ---
Diversified Income, Class B(2) .............   -9.36%      5.79%        ---             3.20%
Lehman Brothers Government Bond Index(3) ...   -2.15%      7.60%       7.66%            5.38%
- --------------------------------------------------------------------------------------------------
<FN>
(1)  Reflects deduction of sales charge of 4.75%.

(2)  Reflects  deduction  of a  deferred  sales  charge of 5% for the 1-year and 2% for the 5-year
     returns.

(3)  The Lehman  Brothers  Government  Bond Index is comprised of public  obligations  of the U.S.
     Treasury with  maturities of more than one year and publicly  issued debt of U.S.  Government
     Agencies.
</FN>
- --------------------------------------------------------------------------------------------------
</TABLE>

The table below shows the  non-standardized  performance of  Diversified  Income
Fund, which does not reflect  deduction of sales charges.  If sales charges were
reflected,  the performance  figures would be lower than those shown. The Fund's
past  performance  is not an  indication  of how the Fund  will  perform  in the
future.

- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS for the periods ended December 31, 1999
- --------------------------------------------------------------------------------
                                                                 SINCE INCEPTION
                                                                   OF CLASS B
                                1 YEAR    5 YEARS    10 YEARS      (10/19/93)
Diversified Income, Class A     -3.60%     7.22%      6.86%            ---
Diversified Income, Class B     -4.59%     6.10%       ---            3.20%
- --------------------------------------------------------------------------------

Additional information about Diversified Income Fund is included in the section,
"More Information Regarding the Funds," page 20.

INFORMATION ABOUT THE REORGANIZATION

THE REORGANIZATION  PLAN -- The Reorganization Plan provides for the transfer of
all of the assets and  liabilities  of each of  Corporate  Bond Fund and Limited
Maturity Bond Fund to Diversified Income Fund solely in exchange for Class A and
Class B shares of  Diversified  Income  Fund.  Each of  Corporate  Bond Fund and
Limited Maturity Bond Fund will distribute the shares of Diversified Income Fund
received in the exchange to its  shareholders,  and then Corporate Bond Fund and
Limited Maturity Bond Fund will be liquidated.

After the  Reorganization,  each  shareholder of Corporate Bond Fund and Limited
Maturity  Bond  Fund  will own  shares  in  Diversified  Income  Fund  having an
aggregate value equal to the aggregate value of each respective  class of shares
of Corporate Bond Fund and Limited  Maturity Bond Fund held by that  shareholder
as of the  close  of  business  on  the  business  day  preceding  the  Closing.
Shareholders of Class A and B shares of Corporate Bond Fund and Limited Maturity
Bond Fund will receive shares of the corresponding  class of Diversified  Income
Fund. In the interest of economy and convenience,  shares of Diversified  Income
Fund generally will not be represented by physical certificates.

Until the Closing, shareholders of Corporate Bond Fund and Limited Maturity Bond
Fund  will  continue  to be able to redeem  their  shares.  Redemption  requests
received  after  the  Closing  will  be  treated  as  requests  received  by the
Diversified  Income  Fund  for the  redemption  of its  shares  received  by the
shareholder in the Reorganization.

The  obligations  of the Funds  under the  Reorganization  Plan are  subject  to
various  conditions,  including  approval  of the  shareholders  of  each of the
Corporate Bond Fund and Limited Maturity Bond Fund. The Reorganization Plan also
requires that the Funds take, or cause to be taken, all actions, and do or cause
to be done, all things reasonably  necessary,  proper or advisable to consummate
and make effective the transactions contemplated by the Reorganization Plan. The
Reorganization  Plan may be terminated by mutual  agreement of the parties or on
certain other grounds. For a complete description of the terms and conditions of
the Reorganization, see the Reorganization Plan at Appendix A.

REASONS FOR THE REORGANIZATION -- The Funds have similar investment  objectives,
strategies  and  risks  and are  relatively  small in asset  size.  Because  the
Corporate Bond Fund and Limited  Maturity Bond Fund may invest in  substantially
the  same  types of  securities  as  Diversified  Income  Fund,  the  Funds  are
duplicative in the same group of funds. In addition,  the  reorganization  would
create  a  larger  Fund,  which  should  benefit  shareholders  of the  Funds by
spreading costs across a larger, combined asset base. Also, a larger fund offers
the  benefit of a more  diversified  portfolio  of  securities  and may  improve
trading efficiency.  Based upon these considerations,  the Board of Directors of
Security Income Fund determined that the Funds should be reorganized.

The proposed  Reorganization was presented to the Board of Directors of Security
Income Fund for  consideration  and approval at a meeting held February 4, 2000.
For the reasons  discussed below, the Directors,  including all of the Directors
who are not  "interested  persons" (as defined in the Investment  Company Act of
1940) of Security Income Fund, determined that the interests of the shareholders
of the  respective  Funds  would  not be  diluted  as a result  of the  proposed
Reorganization,  and that the proposed  Reorganization was in the best interests
of each of the Funds and its shareholders.

The  Reorganization  would allow shareholders of Corporate Bond Fund and Limited
Maturity  Bond  Fund to  continue  to  participate  in a  professionally-managed
portfolio which invests primarily in investment grade debt securities.  As Class
A and Class B shareholders of Diversified  Income Fund, these shareholders would
continue to be able to exchange  into other mutual funds in the larger  Security
Group of  Mutual  Funds  that  offer  the same  class of  shares  in which  such
shareholder  is  currently  invested.  A list of the current  Security  Group of
Mutual Funds, and their available classes, is attached as Appendix B.

BOARD  CONSIDERATION  -- The Board of  Directors  of Security  Income  Fund,  in
recommending the proposed transaction, considered a number of factors, including
the following:

1.  expense ratios and information regarding fees and expenses of Corporate Bond
    Fund, Limited Maturity Bond Fund and Diversified Income Fund;

2.  estimates  that show that combining the Funds should result in lower expense
    ratios because of economies of scale;

3.  elimination  of  duplication  of costs and  inefficiencies  of having  three
    similar funds;

4.  the  Reorganization  would not dilute the  interests  of the Funds'  current
    shareholders;

5.  the relative investment  performance and risks of Diversified Income Fund as
    compared to Corporate Bond Fund and Limited Maturity Bond Fund;

6.  the similarity of Diversified Income Fund's investment objectives,  policies
    and  restrictions to those of Corporate Bond Fund and Limited  Maturity Bond
    Fund and the fact that the Funds are duplicative within the overall group of
    funds;

7.  the tax-free nature of the Reorganization to Corporate Bond Fund and Limited
    Maturity Bond Fund and their shareholders.

THE BOARD OF DIRECTORS OF SECURITY INCOME FUND  RECOMMENDS THAT  SHAREHOLDERS OF
THE CORPORATE BOND FUND AND LIMITED  MATURITY BOND FUND,  RESPECTIVELY,  APPROVE
THE REORGANIZATION.

TAX  CONSIDERATIONS  -- The  Reorganization  is  intended to qualify for Federal
income  tax  purposes  as a tax-free  reorganization  under  Section  368 of the
Internal Revenue Code of 1986, as amended (the "Code"). Accordingly, pursuant to
this treatment, neither the Corporate Bond Fund, Limited Maturity Bond Fund, nor
their respective  shareholders,  nor the Diversified  Income Fund is expected to
recognize any gain or loss for federal income tax purposes from the transactions
contemplated  by the  Reorganization  Plan. As a condition to the closing of the
Reorganization,  the Funds will  receive an opinion from the law firm of Dechert
Price & Rhoads to the effect that the Reorganization  will qualify as a tax-free
reorganization  for Federal  income tax purposes.  That opinion will be based in
part upon  certain  assumptions  and upon  certain  representations  made by the
Funds.

Immediately  prior to the  Reorganization,  each of the Corporate  Bond Fund and
Limited Maturity Bond Fund will pay a dividend or dividends which, together with
all previous dividends, will have the effect of distributing to their respective
shareholders  all of the Corporate Bond Fund's and Limited  Maturity Bond Fund's
investment  company  taxable  income for taxable years ending on or prior to the
Reorganization (computed without regard to any deduction for dividends paid) and
all of its net capital  gains,  if any,  realized in taxable  years ending on or
prior to the  Reorganization  (after  reduction for any  available  capital loss
carryforward).  Such  dividends  will be included  in the taxable  income of the
Corporate Bond Fund's and Limited Maturity Bond Fund's shareholders.

As of December  31,  1999,  Corporate  Bond Fund had  accumulated  capital  loss
carryforwards  in the amount of  approximately  $12,374,110 and Limited Maturity
Bond Fund in the  amount of  approximately  $10,661.  After the  Reorganization,
these losses will be available to Diversified  Income Fund to offset its capital
gains,  although the amount of these losses which may offset  Diversified Income
Fund's  capital  gains in any  given  year may be  limited.  As a result of this
limitation,  it is possible that Diversified  Income Fund may not be able to use
these losses as rapidly as Corporate  Bond Fund and Limited  Maturity  Bond Fund
might have,  and part of these  losses may not be useable at all. The ability of
Diversified Income Fund to absorb losses in the future depends upon a variety of
factors  that cannot be known in advance,  including  the  existence  of capital
gains against which these losses may be offset. In addition, the benefits of any
capital loss  carryforwards  currently are  available  only to  shareholders  of
Corporate  Bond Fund and Limited  Maturity  Bond Fund,  respectively.  After the
Reorganization,  however,  these  benefits  will  inure  to the  benefit  of all
shareholders of Diversified Income Fund.

EXPENSES OF THE  REORGANIZATION  -- The Funds will bear the expenses relating to
the proposed Reorganization, including but not limited to the costs of the proxy
solicitation, which will be allocated ratably on the basis of their relative net
asset values immediately before Closing.

ADDITIONAL INFORMATION ABOUT THE FUNDS

FORM OF ORGANIZATION -- Each of the Funds is a series of Security Income Fund, a
Kansas  corporation.  Security  Income Fund is governed by a Board of Directors,
which consists of six directors.

DIVIDENDS  AND  OTHER  DISTRIBUTIONS  --  Each  Fund  pays  dividends  from  net
investment income on a monthly basis, and distributes net capital gains, if any,
at least annually.  Dividends and  distributions of each Fund are  automatically
reinvested in additional shares of the respective class of that Fund, unless the
shareholder elects to receive distributions in cash.

If the  Reorganization  Plan is approved by  shareholders of Corporate Bond Fund
and Limited Maturity Bond Fund, then as soon as practicable  before the Closing,
each of  Corporate  Bond  Fund  and  Limited  Maturity  Bond  Fund  will pay its
shareholders a cash distribution of all undistributed 2000 net investment income
and undistributed realized net capital gains.

CAPITALIZATION   --  The  following  table  shows  on  an  unaudited  basis  the
capitalization  of each Fund as of December 31, 1999 and on a PRO FORMA basis as
of December 31, 1999, giving effect to the Reorganization:

- --------------------------------------------------------------------------------
                                                       NET ASSET
                                                       VALUE PER       SHARES
                                       NET ASSETS        SHARE       OUTSTANDING
- --------------------------------------------------------------------------------
DIVERSIFIED INCOME FUND
   Class A .........................   $12,722,594       $4.52         2,812,887
   Class B .........................    $2,355,592       $4.51           522,448
CORPORATE BOND FUND
   Class A .........................   $49,476,637       $6.47         7,645,684
   Class B .........................    $9,137,794       $6.51         1,404,036
LIMITED MATURITY BOND FUND
   Class A .........................    $5,570,226       $9.57           581,851
   Class B .........................    $1,325,086       $9.54           138,869
PRO FORMA - DIVERSIFIED INCOME
INCLUDING CORPORATE BOND AND
LIMITED MATURITY BOND FUNDS
   Class A .........................   $67,769,457       $4.52        14,993,243
   Class B .........................   $12,818,472       $4.51         2,842,377
- --------------------------------------------------------------------------------

GENERAL INFORMATION ABOUT THE PROXY STATEMENT

SOLICITATION  OF PROXIES -- Proxies  are being  solicited  at the request of the
Board of Directors of Security  Income  Fund.  Solicitation  of proxies is being
made  primarily  by the  mailing  of this  Notice and Proxy  Statement  with its
enclosures on or about April 4, 2000.  Shareholders  of Corporate  Bond Fund and
Limited  Maturity Bond Fund whose shares are held by nominees,  such as brokers,
can vote their proxies by contacting  their respective  nominee.  In addition to
the  solicitation of proxies by mail,  employees of Security  Management and its
affiliates, without additional compensation, may solicit proxies in person or by
telephone, telegraph, facsimile, or oral communication.  The Funds have retained
Shareholder Communications  Corporation, a professional proxy solicitation firm,
to assist with any necessary solicitation of proxies.  Shareholders of Corporate
Bond Fund and Limited  Maturity Bond Fund may receive a telephone  call from the
professional proxy solicitation firm asking the shareholder to vote.

A shareholder may revoke the accompanying  proxy at any time prior to its use by
filing with Corporate Bond Fund or Limited Maturity Bond Fund, as applicable,  a
written revocation or duly executed proxy bearing a later date. In addition, any
shareholder  who attends the meeting of Corporate Bond Fund or Limited  Maturity
Bond Fund  shareholders,  as  applicable,  in  person  may vote by ballot at the
Meeting,  thereby  canceling any proxy previously  given. The cost of soliciting
proxies will be borne by Security  Management,  which will be  reimbursed by the
Funds. The persons named in the accompanying  proxy will vote as directed by the
proxy,  but in the absence of voting  directions in any proxy that is signed and
returned,  they intend to vote "FOR" the Reorganization proposal and may vote in
their  discretion  with  respect to other  matters not now known to the Board of
Directors  of  Security  Income  Fund that may be  presented  at the  respective
meetings.

VOTING RIGHTS -- Shares of the Funds entitle their holders to one vote per share
as to any matter on which the holder is  entitled to vote,  and each  fractional
share  shall  be  entitled  to a  proportionate  fractional  vote.  Shares  have
cumulative voting rights and no preemptive or subscription rights.

Shareholders  of each of the Corporate  Bond and Limited  Maturity Bond Funds at
the close of business on February 28, 2000 (the "Record  Date") will be entitled
to be present and give  voting  instructions  for the Funds at their  respective
meetings  with respect to their  shares owned as of that Record Date.  As of the
Record Date,  9,128,419.973  shares of the Corporate Bond Fund were  outstanding
and entitled to vote and  692,234.205  shares of the Limited  Maturity Bond Fund
were outstanding and entitled to vote.

Approval of the  Reorganization  with respect to each of Corporate Bond Fund and
Limited  Maturity Bond Fund requires the  affirmative  vote of a majority of the
outstanding  shares of that Fund. In the event that the shareholders of only one
of  the   Corporate   Bond  and  Limited   Maturity   Bond  Funds   approve  the
Reorganization,   that   particular   Fund  whose   shareholders   approved  the
Reorganization  would be reorganized into Diversified  Income Fund. The Fund not
approving the Reorganization would continue to operate as a separate entity.

Each of Corporate Bond Fund and Limited Maturity Bond Fund must have a quorum to
conduct its  business at the meeting.  The holders of a MAJORITY of  outstanding
shares present in person or by proxy shall  constitute a quorum.  In the absence
of a quorum,  a majority of outstanding  shares of either Fund entitled to vote,
in person or by proxy,  may adjourn the meeting from time to time until a quorum
shall be present.  An  adjournment of the meeting for one of the Funds shall not
prevent the other Fund from holding its meeting.

If a shareholder abstains from voting as to any matter, or if a broker returns a
"non-vote" proxy, indicating a lack of authority to vote on a matter, the shares
represented  by the abstention or non-vote will be deemed present at the meeting
for purposes of determining a quorum. However,  abstentions and broker non-votes
will not be deemed  represented at the meeting for purposes of  calculating  the
vote on any matter.  As a result, an abstention or broker non-vote will have the
same effect as a vote  against the  Reorganization.  Prior to the  meeting,  the
Funds  expect that  broker-dealer  firms  holding  their  shares of the Funds in
"street name" for their  customers will request voting  instructions  from their
customers and beneficial owners.

To the knowledge of Security  Income Fund, as of August 31, 1999, no Director of
Security Income Fund owns 1% or more of the outstanding  shares of the Corporate
Bond Fund or Limited  Maturity  Bond Fund,  and the  officers  and  Directors of
Security  Income  Fund  own,  as a  group,  less  than 1% of the  shares  of the
Corporate Bond Fund or Limited Maturity Bond Fund.

Appendix C hereto  lists the  persons  that,  as of  February  28,  2000,  owned
beneficially,  or of record 5% or more of the  outstanding  shares of  Corporate
Bond Fund or Limited Maturity Bond Fund.

OTHER  MATTERS  TO COME  BEFORE  THE  MEETINGS  -- The  Funds do not know of any
matters to be presented at the meetings other than those described in this Proxy
Statement/Prospectus.   If  other  business  should  properly  come  before  the
meetings,  the proxy  holders  will vote thereon in  accordance  with their best
judgment.

SHAREHOLDER  PROPOSALS  -- The Funds are not  required  to hold  regular  annual
meetings and, in order to minimize  their costs,  do not intend to hold meetings
of  shareholders  unless so required by applicable law,  regulation,  regulatory
policy or if otherwise deemed advisable by the Funds'  management.  Therefore it
is not  practicable  to specify a date by which  shareholder  proposals  must be
received in order to be  incorporated  in an  upcoming  proxy  statement  for an
annual meeting or to be submitted to shareholders of the Funds.

INFORMATION  ABOUT THE FUNDS -- Proxy materials,  reports and other  information
filed  by the  Funds  can be  inspected  and  copied  at  the  Public  Reference
Facilities maintained by the SEC at 450 Fifth Street, NW, Washington,  DC 20549;
7 World Trade Center, Suite 1300, New York, New York 10048; and 500 West Madison
Street, Suite 1400, Chicago, Illinois 60661. Copies of such material can also be
obtained  from the Public  Reference  Branch,  Office of  Consumer  Affairs  and
Information Services,  Securities and Exchange Commission,  Washington, DC 20549
at  prescribed  rates.  The SEC  maintains  an Internet  World Wide Web site (at
http://www.sec.gov) which contains other information about the Funds.

REPORTS TO SHAREHOLDERS -- Security  Management will furnish,  without charge, a
copy of the most recent Annual Report regarding the Funds upon request. Requests
for such reports  should be directed to Security  Management  at 700 SW Harrison
Street, Topeka, KS 66636 or at (800) 888-2461.

IN ORDER THAT THE PRESENCE OF A QUORUM AT THE  MEETINGS  MAY BE ASSURED,  PROMPT
EXECUTION  AND RETURN OF THE  ENCLOSED  PROXY IS  REQUESTED.  A  SELF-ADDRESSED,
POSTAGE-PAID ENVELOPE IS ENCLOSED FOR YOUR CONVENIENCE.

                                                           Amy J. Lee, Secretary

April 3, 2000
700 SW Harrison
Topeka, KS 66636
<PAGE>
                      MORE INFORMATION REGARDING THE FUNDS

SHAREHOLDER GUIDE

PURCHASE OPTIONS -- This Proxy Statement/Prospectus  relates to the two separate
classes  of  Diversified  Income  Fund:  Class A and  Class  B,  each  of  which
represents  an identical  interest in the Fund's  investment  portfolio,  but is
offered  with  different  sales  charges  and   distribution  fee  (Rule  12b-1)
arrangements.  As  described  below  and  elsewhere  in  this  Proxy  Statement/
Prospectus,   the  contingent  deferred  sales  load  structure  and  conversion
characteristics  of the  Diversified  Income  Fund  shares  issued to you in the
Reorganization will be the same as those that applied to the Corporate Bond Fund
and/or Limited  Maturity Bond Fund shares held by you  immediately  prior to the
Reorganization,  and the period  that you held the  Corporate  Bond Fund  and/or
Limited  Maturity Bond Fund shares will be included in the holding period of the
Diversified Income Fund shares for purposes of calculating  contingent  deferred
sales  charges and  determining  conversion  rights.  Purchases of the shares of
Diversified  Income Fund after the  Reorganization  will be subject to the sales
load structure and conversion rights discussed below.

The  sales  charges  and  fees for  Class A and  Class B shares  are  shown  and
contrasted in the chart below.

- --------------------------------------------------------------------------------
                                                         CLASS A      CLASS B
- --------------------------------------------------------------------------------
Maximum Initial Sales Charge on Purchases ............   4.75%(1)     None
Contingent Deferred Sales Charge ("CDSC") ............   None(2)      5.00%(3)
Annual Distribution (12b-1) Fee and Service Fee(4) ...   0.25%        1.00%
Automatic Conversion to Class A ......................   N/A          8 Years(5)
- --------------------------------------------------------------------------------
(1)  Imposed upon purchase. Reduced for purchases of $50,000 and more.

(2)  For  investments  of $1 million or more,  a CDSC of 1% may be  assessed  on
     redemptions of shares that were purchased  without an initial sales charge.
     See "Class A shares: Initial Sales Charge Alternative," below.

(3)  Imposed upon  redemption  within 5 years from  purchase.  Fee has scheduled
     reductions after the first year. See "Class B shares: Deferred Sales Charge
     Alternative," below.

(4)  Annual asset-based distribution charge.

(5)  Class B shares of the Diversified Income Fund issued to shareholders of the
     Corporate Bond Fund and/or Limited Maturity Bond Fund in the Reorganization
     will convert to Class A shares in the eighth year from the original date of
     purchase of the Class B shares of the  Corporate  Bond Fund and/or  Limited
     Maturity Bond Fund, as applicable.
- --------------------------------------------------------------------------------

The relative  impact of the initial  sales charges and ongoing  annual  expenses
will depend on the length of time a share is held.

CLASS A SHARES.

INITIAL  SALES CHARGE  ALTERNATIVE.  Class A shares of the Funds are sold at the
net asset value  ("NAV") per share in effect plus a sales charge as described in
the  following  table.  For waivers or  reductions  of the Class A shares  sales
charges,  see "Special  Purchases  without a Sales  Charge" and  "Reduced  Sales
Charges."

- --------------------------------------------------------------------------------
                              AS A % OF       AS A %     DEALERS' REALLOWANCE AS
YOUR INVESTMENT            OFFERING PRICE     OF NAV      A % OF OFFERING PRICE
- --------------------------------------------------------------------------------
Less than $50,000 .........    4.75%          4.99%               4.00%
$50,000 - $99,999 .........    3.75%          3.90%               3.00%
$100,000 - $249,999 .......    2.75%          2.83%               2.20%
$250,000 - $999,999 .......    1.75%          1.78%               1.40%
$1,000,000 or more ........    None           None             (See below)
- --------------------------------------------------------------------------------

There is no initial sales charge on purchases of  $1,000,000  or more.  However,
the Funds'  Distributor  will pay  Authorized  Dealers of record  commissions as
follows:  1.00% on  purchases  of  $1,000,000  up to  $5,000,000,  plus 0.50% on
amounts  above  $5,000,000  up to  $10,000,000,  plus 0.10% for any amount above
$10,000,000. If shares are redeemed within one year of purchase, a CDSC of 1.00%
will be imposed.

REDUCED SALES CHARGES.  An investor may immediately  qualify for a reduced sales
charge  on a  purchase  of Class A  shares  of the  Funds or other  funds in the
Security  Group of Mutual  Funds  which offer Class A shares,  by  completing  a
Statement of  Intention to purchase  Fund  shares.  Executing  the  Statement of
Intention  expresses  an  intention  to invest  during the next 13 months (or 36
months for purchases of $1,000,000 or more) a specified  amount,  which, if made
at one time,  would qualify for a reduced sales charge.  An amount equal to five
percent of the amount specified in the Statement of Intention will be restricted
within your account to cover  additional  sales  charges that may be due if your
actual total investment fails to qualify for the reduced sales charges.  See the
Statement of Additional  Information  for the Funds for details on the Statement
of Intention  option or contact  Security  Management at (800) 888-2461 for more
information.

A sales  charge  may also be  reduced  by  taking  into  account  your  previous
purchases  of Class A shares  of the Funds or any  other  funds in the  Security
Group of Mutual Funds (excluding Security Cash Fund) ("Rights of Accumulation").
The reduced sales charges apply to quantity  purchases  made at one time or on a
cumulative  basis  over any  period of time.  See the  Statement  of  Additional
Information  for the Funds for details or contact  Security  Management at (800)
888-2461 for more information.

SPECIAL PURCHASE WITHOUT A SALES CHARGE.  Class A shares may be purchased at NAV
without a sales charge by certain  individuals and institutions.  For additional
information,  contact Security  Management at (800) 888-2461,  or see the Funds'
Statement of Additional Information.

CLASS B SHARES.

DEFERRED SALES CHARGE ALTERNATIVE.  Class B shares may be purchased at their NAV
per share  without  an initial  sales  charge at the time of  purchase.  Class B
shares that are redeemed within five years of purchase, however, will be subject
to a CDSC as  described in the table that  follows.  Class B shares of the Funds
are  subject to a  distribution  (12b-1)  fee at an annual  rate of 1.00% of the
average  daily net assets of the Class,  which is higher  than the  distribution
fees of Class A  shares.  The  higher  distribution  (12b-1)  fees mean a higher
expense ratio,  so Class B shares pay  correspondingly  lower  dividends and may
have a lower  NAV than  Class A  shares.  In  connection  with  sales of Class B
shares,  the  Distributor  compensates  Authorized  Dealers  at a rate  of 4% of
purchase  payments  subject to a CDSC. The amount of the CDSC is determined as a
percentage  of the  lesser  of the NAV of the  Class  B  shares  at the  time of
original purchase or redemption.  No charge will be imposed for any net increase
in the value of shares purchased during the preceding six years in excess of the
purchase price of such shares or for shares  acquired  either by reinvestment of
net investment  income dividends or capital gain  distributions.  The percentage
used to calculate the CDSC will depend on the number of years since you invested
the dollar amount being redeemed according to the following table:

                -----------------------------------------------
                YEAR OF REDEMPTION AFTER PURCHASE          CDSC
                -----------------------------------------------
                First ..................................    5%
                Second .................................    4%
                Third ..................................    3%
                Fourth .................................    3%
                Fifth ..................................    2%
                Sixth and following ....................    0%
                -----------------------------------------------

Class B shares will automatically  convert into Class A shares eight years after
purchase,  except that Class B shares of the  Diversified  Income Fund issued in
connection  with the  Reorganization  with  respect  to  Class B  shares  of the
Corporate  Bond Fund and/or  Limited  Maturity Bond Fund will convert to Class A
shares eight years after the purchase of the  original  shares of the  Corporate
Bond Fund and/or  Limited  Maturity Bond Fund,  as  applicable.  For  additional
information  on the CDSC and the  conversion  of Class B shares,  see the Funds'
Statement of Additional Information.

WAIVERS  OF CDSC.  The CDSC on Class A and Class B shares  will be waived in the
following cases. In determining whether a CDSC is applicable, it will be assumed
that  shares  held in the  shareholder's  account  that are not  subject to such
charge are redeemed first.

o  Upon the death of the  shareholder if shares are redeemed  within one year of
   the shareholder's death

o  Upon the disability of the shareholder prior to age 65 if shares are redeemed
   within one year of the shareholder  becoming disabled and the shareholder was
   not disabled when the shares were purchased

o  In connection  with required  minimum  distributions  from a retirement  plan
   qualified under Section 401(a), 401(k), 403(b) or 408 of the Internal Revenue
   Code

o  In connection  with  distributions  from  retirement  plans  qualified  under
   Section 401(a) or 401(k) of the Internal Revenue Code for:

   -  returns of excess contributions to the plan

   -  retirement of a participant in the plan

   -  a loan  from the plan  (loan  repayments  are  treated  as new  sales  for
      purposes of the deferred sales charge)

o  Upon the financial  hardship (as defined in regulations  under the Code) of a
   participant in a plan

o  Upon termination of employment of a participant in a plan

o  Upon any other permissible withdrawal under the terms of the plan.

If you think you may be eligible for a CDSC waiver,  contact Security Management
at (800) 888-2461.

REINSTATEMENT PRIVILEGE.  Class A shareholders who have redeemed their shares in
any fund in the Security  Group of Mutual Funds may reinvest  some or all of the
proceeds in the same share class within 30 days without a sales charge.  See the
Statement  of  Additional  Information  for the Funds  for  details  or  contact
Security Management at (800) 888-2461.

RULE 12B-1 PLAN. Each Fund has a distribution  plan pursuant to Rule 12b-1 under
the 1940 Act applicable to each class of shares of the Fund ("Rule 12b-1 Plan").
Under the Rule 12b-1 Plans, the Distributor may receive from each Fund an annual
fee in  connection  with the  offering,  sale and  shareholder  servicing of the
Fund's Class A and Class B shares.

DISTRIBUTION  AND SERVICING FEES. In connection with the  distribution of shares
of the Fund and services rendered to shareholders, the Fund pays the Distributor
servicing  fees and  distribution  fees up to the annual  rates set forth  below
(calculated as a percentage of the Fund's average daily net assets  attributable
to that class):

                 ----------------------------------------------
                             SERVICING FEE     DISTRIBUTION FEE
                 ----------------------------------------------
                 Class A ....    0.25%              None
                 Class B ....    0.25%              0.75%
                 ----------------------------------------------

Fees paid  under the Rule 12b-1  Plan may be used to cover the  expenses  of the
Distributor  from the sale of Class A and Class B shares of the Fund,  including
payments to Authorized  Dealers,  and for shareholder  servicing.  Because these
fees are paid out of the Fund's  assets on an  on-going  basis,  over time these
fees will increase the cost of your investment and may cost you more than paying
other types of sales charges.

Under the Rule 12b-1 Plan, ongoing payments will be made on a quarterly basis to
Authorized  Dealers for  distribution  and  shareholder  servicing  as set forth
below.

                 ----------------------------------------------
                             SERVICING FEE     DISTRIBUTION FEE
                 ----------------------------------------------
                 Class A ....    0.25%              0.00%
                 Class B ....    0.25%              0.00%
                 ----------------------------------------------

OTHER  EXPENSES.  In addition  to the  management  fee and other fees  described
previously, each Fund pays other expenses, such as legal, audit, transfer agency
and custodian fees, proxy solicitation  costs, and the compensation of Directors
who  are not  affiliated  with  Security  Management.  Most  Fund  expenses  are
allocated  proportionately  among  all of the  outstanding  shares  of the Fund.
However,  the Rule  12b-1  Plan  fees  for each  class  of  shares  are  charged
proportionately only to the outstanding shares of that class.

PURCHASING  SHARES  -- The  minimum  initial  investment  in the  Funds is $100.
Subsequent  investments  must be $100 (or $20 under an Accumulation  Plan).  The
Funds and the  Distributor  reserve  the right to reject  any order to  purchase
shares. Purchase and sale requests are executed at the next NAV determined after
the order is received in proper form by the Transfer Agent or the Distributor.

PRICE OF SHARES.  When you buy shares, you pay the NAV plus any applicable sales
charge.  When you sell shares,  you receive the NAV minus any  applicable  CDSC.
Exchange orders are effected at NAV.

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.  For further  information,
contact Security Management at (800) 888-2461.

DETERMINATION  OF NET ASSET VALUE. The NAV per share of each Fund is computed as
of the close of regular trading hours on the New York Stock Exchange (normally 3
p.m.  Central  time) on days when the  Exchange  is open.  The  Exchange is open
Monday through  Friday,  except on observation  of the following  holidays:  New
Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good Friday,  Memorial
Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day.

Each Fund's NAV is generally  based upon the market value of securities  held in
the Fund's  portfolio.  If market  prices are not  available,  the fair value of
securities is determined using procedures  approved by the Board of Directors of
Security Income Fund.

EXCHANGE  PRIVILEGES AND RESTRICTIONS.  Shareholders who own shares of the Funds
may  exchange  those  shares for shares of another of the funds in the  Security
Group of Mutual  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 or sales charge is presently imposed on such an exchange.  Shares of
a particular  class of a Fund may be exchanged only for shares of the same class
of another fund in the Security  Group of Mutual Funds or for shares of Security
Cash Fund,  a money market  fund,  which  offers a single  class of shares.  Any
applicable  CDSC will be imposed upon redemption and 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 of the Funds are made at net asset value  without a
front-end  sales  charge  if:  (1) the  shares  have been  owned for at least 90
consecutive days prior to the exchange, (2) the shares were acquired pursuant to
a prior  exchange  from a 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,  other
than those  described  above,  are made at net asset value plus the sales charge
described in the  prospectus  of the other fund being  acquired,  less the sales
charge paid on the shares of the fund at the time of original purchase.

Shareholders  should contact the Funds 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, Security Management would
first cause to be exchanged  those shares that would not be subject to any sales
charges.  Exchanges  are made upon  receipt  of a  properly  completed  Exchange
Authorization form.

To  exchange   shares  by  telephone,   a   shareholder   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  Security  Management.  The  exchange  privilege,   including
telephone  exchanges,  may be  changed  or  discontinued  at any time by  either
Security Management or the Fund upon 60 days' notice to shareholders.

SELLING  SHARES -- Shares of the  Funds  will be  redeemed  at the NAV (less any
applicable CDSC and/or federal income tax  withholding)  next  determined  after
receipt  of a  redemption  request  in good  form on any day the New York  Stock
Exchange is open for business.  Any share certificates  representing fund shares
sold must be returned with a request to sell the shares.

SYSTEMATIC  WITHDRAWAL  PLAN.  You may  elect  to  receive  monthly,  quarterly,
semi-annual or annual  payments in any fixed amount in excess of $25, as long as
the account has a current value of at least $5,000. For additional  information,
contact  Security  Management at (800) 888-2461,  or see the Funds' Statement of
Additional Information.

PAYMENTS. Payments may be made by check. Redemption proceeds will be sent to the
shareholder(s)  of record at the  address  of record  within  seven  days  after
receipt  of a valid  redemption  request.  For a  charge  of $15  deducted  from
redemption  proceeds,  Security Management will provide a certified or cashier's
check, or send the redemption  proceeds by express mail, upon the  shareholder's
request.

MANAGEMENT OF THE FUND

INVESTMENT MANAGER -- Security Management,  each Fund's investment manager, is a
Kansas limited liability company.  On December 31, 1999, the aggregate assets of
all of the mutual funds under the investment  management of Security  Management
were approximately $6.3 billion.  Security Management has overall responsibility
for the management of the Funds.  Security  Income Fund and Security  Management
have entered into an agreement  that  requires  Security  Management  to provide
investment advisory,  statistical and research services to the Funds,  supervise
and arrange for the purchase and sale of securities on behalf of the Funds,  and
provide  for the  maintenance  and  compilation  of  records  pertaining  to the
investment  advisory  function.  The agreement  with Security  Management can be
canceled by the Board of Directors of Security  Income Fund upon 60 days written
notice.  Investment  management  fees are  computed  and accrued  daily and paid
monthly.  For the year ended December 31, 1999,  Diversified Income Fund did not
pay investment management fees to Security Management, which waived such fees.

PARENT  COMPANY AND  DISTRIBUTOR  -- Security  Management  is  controlled by its
members,  Security  Benefit Life Insurance  Company and Security  Benefit Group,
Inc.  ("SBG").  SBG is an  insurance  and  financial  services  holding  company
wholly-owned by Security  Benefit Life Insurance  Company,  700 Harrison Street,
Topeka,  Kansas 66636-0001.  Security Benefit Life, a life insurance company, is
incorporated under the laws of Kansas.  Security Management is a direct, and the
Distributor,  the Fund's  principal  underwriter,  is an indirect,  wholly owned
subsidiary of Security Benefit Life Insurance Company ("Security Benefit").

ADMINISTRATIVE  AGENT --  Security  Management  also acts as the  administrative
agent  for  the  Fund  and as such  performs  administrative  functions  and the
bookkeeping,  accounting and pricing functions for the Funds. For these services
Security Management receives,  on an annual basis, a fee of 0.09% of the average
net assets of each Fund, calculated daily and payable monthly.

Security  Management  also acts as the  transfer  agent for the Funds.  As such,
Security  Management  performs all shareholder  servicing  functions,  including
transferring record ownership,  processing purchase and redemption transactions,
answering  inquiries,  mailing  shareholder  communications  and  acting  as the
dividend  disbursing agent. For these services,  the Investment Manager receives
an annual  maintenance fee of $8.00 per account,  a fee of $1.00 per shareholder
transaction, and a fee of $1.00 per dividend transaction.

PORTFOLIO  TRANSACTIONS  --  Security  Management  will place  orders to execute
securities  transactions  that are designed to implement each Fund's  investment
objectives and policies.  Security  Management  uses its  reasonable  efforts to
place all purchase and sale  transactions  with brokers and dealers  ("brokers")
that provide  "best  execution" of these  orders.  In placing  purchase and sale
transactions,  Security  Management may consider brokerage and research services
provided by a broker to Security Management or its affiliates,  and the Fund may
pay a commission for effecting a securities transaction that is in excess of the
amount  another broker would have charged if Security  Management  determines in
good faith that the amount of  commission is reasonable in relation to the value
of the brokerage and research services provided by the broker viewed in terms of
either that particular  transaction or the overall  responsibilities of Security
Management  with  respect to all  accounts as to which it  exercises  investment
discretion.  Security  Management may use all, none, or some of such information
and services in  providing  investment  advisory  services to each of the mutual
funds  under  its  management,   including  each  Fund.  In  addition,  Security
Management  also  may  consider  a  broker's  sale of Fund  shares  if  Security
Management  is  satisfied  that the Fund would  receive  best  execution  of the
transaction from that broker.

Securities  held by the  Funds  may  also be held by other  investment  advisory
clients  of  Security  Management,  including  other  investment  companies.  In
addition,  Security Management's parent company, Security Benefit, may also hold
some of the same securities as the Funds. When selecting securities for purchase
or sale for a Fund,  Security  Management  may at the same time be purchasing or
selling the same securities for one or more of such other  accounts.  Subject to
Security Management's obligation to seek best execution, such purchases or sales
may be  executed  simultaneously  or  "bunched."  It is the  policy of  Security
Management not to favor one account over the other.  Any purchase or sale orders
executed  simultaneously  (which may also include orders from Security  Benefit)
are  allocated at the average price and as nearly as  practicable  on a pro rata
basis  (transaction  costs will also generally be shared on a pro rata basis) in
proportion to the amounts  desired to be purchased or sold by each  account.  In
those instances where it is not practical to allocate purchase or sale orders on
a pro  rata  basis,  then the  allocation  will be made on a  rotating  or other
equitable  basis.  While  it is  conceivable  that  in  certain  instances  this
procedure  could  adversely  affect the price or number of shares  involved in a
Fund's transaction,  it is believed that the procedure generally  contributes to
better overall execution of the Funds' portfolio transactions.

DIVIDENDS, DISTRIBUTIONS AND TAXES

DIVIDENDS AND  DISTRIBUTIONS -- Each Fund pays its  shareholders  dividends from
its net investment income monthly, and distributes any net capital gains that it
has  realized,  at least  annually.  Your  dividends and  distributions  will be
reinvested  in shares of the  Fund,  unless  you  instruct  Security  Management
otherwise. There are no fees or sales charges on reinvestments.

FEDERAL TAXES -- Fund dividends and  distributions  are taxable to  shareholders
(unless your investment is in an Individual  Retirement Account ("IRA") or other
tax-advantaged  retirement  account)  whether you  reinvest  your  dividends  or
distributions or take them in cash.

In addition to federal tax,  dividends and distributions may be subject to state
and local  taxes.  If a Fund  declares a dividend  or  distribution  in October,
November or December but pays it in January,  you may be taxed on that  dividend
or  distribution  as if  you  received  it in the  previous  year.  In  general,
dividends and distributions from the Funds are taxable as follows:

- --------------------------------------------------------------------------------
                                                            TAX RATE FOR 28%
TYPE OF DISTRIBUTION         TAX RATE FOR 15% BRACKET       BRACKET OR ABOVE
- --------------------------------------------------------------------------------
Income dividends               Ordinary Income rate       Ordinary Income rate
Short-term capital gains       Ordinary Income rate       Ordinary Income rate
Long-term capital gains                10%                        20%
- --------------------------------------------------------------------------------

A Fund has "short-term  capital gains" when it sells a security within 12 months
after buying it. A Fund has  "long-term  capital gains" when it sells a security
that it has owned for more than 12 months. When a Fund earns interest from bonds
and other debt securities and distributes  these earnings to  shareholders,  the
Fund has  "ordinary  income."  The Funds  expect that their  distributions  will
consist  primarily of ordinary income.  You generally are required to report all
Fund distributions on your federal income tax return.

Tax-deferred  retirement accounts do not generate a tax liability unless you are
taking a distribution or making a withdrawal.

The Funds mail information  concerning the tax status of the  distributions  for
each calendar year on or before January 31 of the following year.

This is a brief  summary of some of the tax laws that affect your  investment in
the Funds.  Please see the Funds'  Statement of Additional  Information and your
tax adviser for further information.
<PAGE>
                FINANCIAL HIGHLIGHTS FOR DIVERSIFIED INCOME FUND,
               CORPORATE BOND FUND AND LIMITED MATURITY BOND FUND
                 FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD


The financial  highlights  table is intended to help you  understand  the Funds'
financial  performance  for their  Class A shares and Class B shares  during the
past five years, or the period since commencement of a Fund. Certain information
reflects  financial  results for a single Fund share.  The total  returns in the
table  represent  the rate that an  investor  would have  earned (or lost) on an
investment in the Fund assuming reinvestment of all dividends and distributions.
This information has been audited by Ernst & Young LLP, whose report, along with
the Funds'  financial  statements,  are included in the annual report,  which is
available upon request.

<TABLE>
- ------------------------------------------------------------------------------------------------------------------------------------
CORPORATE BOND FUND (CLASS A)
- ------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
                                                                          FISCAL YEAR ENDED DECEMBER 31
                                                       --------------------------------------------------------------------
                                                       1999(B)(C)      1998(C)      1997(C)      1996(C)(E)      1995(C)(E)
                                                       ----------      -------      -------      ----------      ----------
PER SHARE DATA
<S>                                                     <C>            <C>          <C>           <C>             <C>
Net asset value beginning of period..................   $ 7.14         $ 7.05       $ 6.87        $ 7.39          $ 6.68

INCOME FROM INVESTMENT OPERATIONS:
Net investment income (loss).........................     0.41           0.43         0.45          0.47            0.47
Net gain (loss) on securities (realized & unrealized)    (0.67)          0.09         0.19         (0.52)           0.71
                                                         -----          -----        -----         -----           -----
Total from investment operations.....................    (0.26)          0.52         0.64         (0.05)           1.18

LESS DISTRIBUTIONS

Dividends (from net investment income)...............    (0.41)         (0.43)       (0.46)        (0.47)          (0.47)
Distributions (from realized gains)..................     ---            ---          ---           ---             ---
                                                         -----          -----        -----         -----           -----
Total distributions..................................    (0.41)         (0.43)       (0.46)        (0.47)          (0.47)
                                                         -----          -----        -----         -----           -----
Net asset value end of period........................   $ 6.47         $ 7.14       $ 7.05        $ 6.87          $ 7.39
                                                         =====          =====        =====         =====           =====
Total return (a).....................................    (3.7)%           7.6%         9.7%        (0.5)%           18.2%

RATIOS/SUPPLEMENTAL DATA
Net assets end of period (thousands).................   $49,477        $53,055      $56,487       $73,360         $93,701
Ratio of expenses to average net assets..............     1.09%          1.06%        1.07%         1.01%           1.02%
Ratio of net investment income
  (loss) to average net assets.......................     6.03%          6.01%        6.50%         6.54%           6.62%
Portfolio turnover rate..............................       36%            64%         120%          292%            200%
</TABLE>

<TABLE>
- ------------------------------------------------------------------------------------------------------------------------------------
CORPORATE BOND FUND (CLASS B)
- ------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
                                                                              FISCAL YEAR ENDED DECEMBER 31
                                                       ----------------------------------------------------------------------------
                                                       1999(B)(C)     1998(B)(C)     1997(B)(C)     1996(B)(C)(E)     1995(B)(C)(E)
                                                       ----------     ----------     ----------     -------------     -------------
PER SHARE DATA
<S>                                                     <C>            <C>            <C>              <C>               <C>
Net asset value beginning of period..................   $ 7.19         $ 7.09         $ 6.90           $ 7.43            $ 6.71

INCOME FROM INVESTMENT OPERATIONS:
Net investment income (loss).........................     0.36           0.37           0.40             0.40              0.40
Net gain (loss) on securities (realized & unrealized)    (0.68)          0.10           0.19            (0.52)             0.73
                                                         -----          -----          -----            -----             -----
Total from investment operations.....................    (0.32)          0.47           0.59            (0.12)             1.13

LESS DISTRIBUTIONS
Dividends (from net investment income)...............    (0.36)         (0.37)         (0.40)           (0.41)            (0.41)
Distributions (from realized gains)..................      ---            ---            ---              ---               ---
                                                         -----          -----          -----            -----             -----
Total distributions..................................    (0.36)         (0.37)         (0.40)           (0.41)            (0.41)
                                                         -----          -----          -----            -----             -----
Net asset value end of period........................   $ 6.51         $ 7.19         $ 7.09           $ 6.90            $ 7.43
                                                         =====          =====          =====            =====             =====
Total return (a).....................................    (4.5)%           6.9%           8.7%           (1.4)%             17.3%

RATIOS/SUPPLEMENTAL DATA
Net assets end of period (thousands).................    $9,138         $7,982         $6,493           $7,303            $5,743
Ratio of expenses to average net assets..............     1.85%          1.85%          1.85%            1.85%             1.85%
Ratio of net investment income
  (loss) to average net assets.......................     5.30%          5.18%          5.72%            5.70%             5.80%
Portfolio turnover rate..............................       36%            64%           120%             292%              200%
</TABLE>

<TABLE>
- ------------------------------------------------------------------------------------------------------------------------------------
LIMITED MATURITY BOND FUND (CLASS A)
- ------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
                                                                              FISCAL PERIOD ENDED DECEMBER 31
                                                       -----------------------------------------------------------------------------
                                                       1999(B)(C)   1998(B)(C)(E)   1997(B)(C)(E)   1996(B)(C)(E)   1995(B)(C)(D)(E)
                                                       ----------   -------------   -------------   -------------   ----------------
PER SHARE DATA
<S>                                                     <C>            <C>             <C>             <C>              <C>
Net asset value beginning of period..................   $10.40         $10.30          $10.14          $10.66           $10.00

INCOME FROM INVESTMENT OPERATIONS:
Net investment income (loss).........................     0.64           0.65            0.72            0.72             0.62
Net gain (loss) on securities (realized & unrealized)    (0.82)          0.10            0.16           (0.51)            0.65
                                                         -----          -----           -----           -----            -----
Total from investment operations.....................    (0.18)          0.75            0.88            0.21             1.27

LESS DISTRIBUTIONS
Dividends (from net investment income)...............    (0.65)         (0.65)          (0.72)          (0.72)           (0.61)
Distributions (from realized gains)..................      ---            ---             ---             ---              ---
Return of capital....................................      ---            ---             ---           (0.01)             ---
                                                         -----          -----           -----           -----            -----
Total distributions..................................    (0.65)         (0.65)          (0.72)          (0.73)           (0.61)
                                                         -----          -----           -----           -----            -----
Net asset value end of period........................   $ 9.57         $10.40          $10.30          $10.14           $10.66
                                                         =====          =====           =====           =====            =====
Total return (a).....................................    (1.8)%           7.5%            9.0%            2.1%            13.0%

RATIOS/SUPPLEMENTAL DATA
Net assets end of period (thousands).................    $5,570         $6,365          $5,490          $4,938           $3,322
Ratio of expenses to average net assets..............     0.77%          0.87%           0.55%           0.90%            0.84%
Ratio of net investment income
  (loss) to average net assets.......................     6.34%          6.30%           7.10%           6.97%            5.97%
Portfolio turnover rate..............................       31%            58%             76%            105%               4%
</TABLE>

<TABLE>
- ------------------------------------------------------------------------------------------------------------------------------------
LIMITED MATURITY BOND FUND (CLASS B)
- ------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
                                                                              FISCAL PERIOD ENDED DECEMBER 31
                                                       -----------------------------------------------------------------------------
                                                       1999(B)(C)   1998(B)(C)(E)   1997(B)(C)(E)   1996(B)(C)(E)   1995(B)(C)(D)(E)
                                                       ----------   -------------   -------------   -------------   ----------------
PER SHARE DATA
<S>                                                     <C>            <C>             <C>             <C>              <C>
Net asset value beginning of period..................   $10.37         $10.27          $10.14          $10.67           $10.00

INCOME FROM INVESTMENT OPERATIONS:
Net investment income (loss).........................     0.53           0.53            0.61            0.63             0.53
Net gain (loss) on securities (realized & unrealized)    (0.82)          0.11            0.14           (0.52)            0.66
                                                         -----          -----           -----           -----            -----
Total from investment operations.....................    (0.29)          0.64            0.75            0.11             1.19

LESS DISTRIBUTIONS
Dividends (from net investment income)...............    (0.54)         (0.54)          (0.62)          (0.63)           (0.52)
Distributions (from realized gains)..................      ---            ---             ---             ---              ---
Return of capital....................................      ---            ---             ---           (0.01)             ---
                                                         -----          -----           -----           -----            -----
Total distributions..................................    (0.54)         (0.54)          (0.62)          (0.64)           (0.52)
                                                         -----          -----           -----           -----            -----
Net asset value end of period........................   $ 9.54         $10.37          $10.27          $10.14           $10.67
                                                                        =====           =====           =====            =====
Total return (a).....................................    (2.9)%           6.4%            7.7%            1.1%            12.2%

RATIOS/SUPPLEMENTAL DATA
Net assets end of period (thousands).................    $1,325         $1,354          $1,054            $761             $752
Ratio of expenses to average net assets..............     1.85%          1.89%           1.50%           1.88%            1.71%
Ratio of net investment income
  (loss) to average net assets.......................     5.27%          5.18%           6.15%           5.99%            5.12%
Portfolio turnover rate..............................       31%            58%             76%            105%               4%
</TABLE>

<TABLE>
- ------------------------------------------------------------------------------------------------------------------------------------
DIVERSIFIED INCOME FUND (CLASS A)
- ------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
                                                                              FISCAL YEAR ENDED DECEMBER 31
                                                       ----------------------------------------------------------------------------
                                                       1999(B)(C)     1998(B)(C)     1997(B)(C)     1996(B)(C)(E)     1995(B)(C)(E)
                                                       ----------     ----------     ----------     -------------     -------------
PER SHARE DATA
<S>                                                     <C>            <C>            <C>              <C>               <C>
Net asset value beginning of period..................   $ 4.96         $ 4.81         $ 4.71           $ 4.97            $ 4.35

INCOME FROM INVESTMENT OPERATIONS:
Net investment income (loss).........................     0.26           0.27           0.32             0.31              0.30
Net gain (loss) on securities (realized & unrealized)    (0.44)          0.16           0.10            (0.26)             0.62
                                                         -----          -----          -----            -----             -----
Total from investment operations.....................    (0.18)          0.43           0.42             0.05              0.92

LESS DISTRIBUTIONS
Dividends (from net investment income)...............    (0.26)         (0.28)         (0.32)           (0.31)            (0.30)
Distributions (from realized gains)..................      ---            ---            ---              ---               ---
                                                         -----          -----          -----            -----             -----
Total distributions..................................    (0.26)         (0.28)         (0.32)           (0.31)            (0.30)
                                                         -----          -----          -----            -----             -----
Net asset value end of period........................   $ 4.52         $ 4.96         $ 4.81           $ 4.71            $ 4.97
                                                         =====          =====          =====            =====             =====
Total return (a).....................................    (3.6)%           9.1%           9.2%             1.3%             21.9%

RATIOS/SUPPLEMENTAL DATA
Net assets end of period (thousands).................   $12,723        $12,644         $7,652           $8,036           $10,080
Ratio of expenses to average net assets..............     0.87%          0.93%          0.60%            0.65%             1.11%
Ratio of net investment income
  (loss) to average net assets.......................     5.58%          5.62%          6.10%            6.44%             6.41%
Portfolio turnover rate..............................       65%            78%            39%              75%               81%
</TABLE>

<TABLE>
- ------------------------------------------------------------------------------------------------------------------------------------
DIVERSIFIED INCOME FUND (CLASS B)
- ------------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
                                                                              FISCAL YEAR ENDED DECEMBER 31
                                                       ----------------------------------------------------------------------------
                                                       1999(B)(C)     1998(B)(C)     1997(B)(C)     1996(B)(C)(E)     1995(B)(C)(E)
                                                       ----------     ----------     ----------     -------------     -------------
PER SHARE DATA
<S>                                                     <C>            <C>            <C>              <C>               <C>
Net asset value beginning of period..................   $ 4.95         $ 4.80         $ 4.71           $ 4.97            $ 4.35

INCOME FROM INVESTMENT OPERATIONS:
Net investment income (loss).........................     0.22           0.22           0.26             0.25              0.26
Net gain (loss) on securities (realized & unrealized)    (0.44)          0.16           0.10            (0.25)             0.63
                                                         -----          -----          -----            -----             -----
Total from investment operations.....................    (0.22)          0.38           0.36            (0.00)             0.89

LESS DISTRIBUTIONS
Dividends (from net investment income)...............    (0.22)         (0.23)         (0.27)           (0.26)            (0.27)
Distributions (from realized gains)..................      ---            ---            ---              ---               ---
                                                         -----          -----          -----            -----             -----
Total distributions..................................    (0.22)         (0.23)         (0.27)           (0.26)            (0.27)
                                                         -----          -----          -----            -----             -----
Net asset value end of period........................   $ 4.51         $ 4.95         $ 4.80           $ 4.71            $ 4.97
                                                         =====          =====          =====            =====             =====
Total return (a).....................................    (4.6)%           8.0%           7.9%          (0.02)%             20.9%

RATIOS/SUPPLEMENTAL DATA
Net assets end of period (thousands).................    $2,356         $3,668         $1,091             $661              $582
Ratio of expenses to average net assets..............     1.85%          1.85%          1.68%            1.86%             1.87%
Ratio of net investment income
  (loss) to average net assets.......................     4.55%          4.66%          5.02%            5.23%             5.69%
Portfolio turnover rate..............................       65%            78%            39%              75%               81%
- ------------------------------------------------------------------------------------------------------------------------------------
</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)  Fund expenses were reduced by the Investment Manager during the period, and
     expense ratios absent such reimbursement would have been as follows:

<TABLE>
<CAPTION>
     -------------------------------------------------------------------------------------------------------------------------------
                                     1995                 1996                 1997                 1998                 1999
                               -----------------    -----------------    -----------------    -----------------    -----------------
                               Class A   Class B    Class A   Class B    Class A   Class B    Class A   Class B    Class A   Class B
     <S>                        <C>       <C>        <C>       <C>        <C>       <C>        <C>       <C>        <C>       <C>
     Corporate Bond .........    N/A      2.19%       N/A      2.05%       N/A      2.10%       N/A      2.32%      1.10%     2.15%
     Diversified Income .....   1.22%     3.70%      1.17%     3.26%      1.06%     2.14%      1.43%     3.03%      1.37%     2.36%
     Limited Maturity Bond ..   1.04%     2.12%      1.40%     2.60%      1.04%     1.99%      1.38%     2.70%      1.27%     2.41%
     -------------------------------------------------------------------------------------------------------------------------------
</TABLE>

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

(d)  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 total return.

(e)  Expense  ratios  including  reimbursements,  were  calculated  without  the
     reduction for custodian fees earnings credits  beginning  February 1, 1995.
     Expense ratios with such reductions would have been as follows:

<TABLE>
<CAPTION>
     ---------------------------------------------------------------------------------------------------------------
                                       1995                   1996                  1997                   1998
                                 -----------------     -----------------     -----------------     -----------------
                                 CLASS A   CLASS B     CLASS A   CLASS B     CLASS A   CLASS B     CLASS A   CLASS B
     <S>                          <C>       <C>         <C>       <C>         <C>       <C>         <C>       <C>
     Corporate Bond ..........    1.02%     1.85%       1.01%     1.85%        ---       ---         ---       ---
     Diversified Income ......    1.10%     1.85%       0.64%     1.85%        ---       ---         ---       ---
     Limited Maturity Bond ...    0.81%     1.65%       0.87%     1.85%       0.51%     1.46%       0.83%     1.85%
     ---------------------------------------------------------------------------------------------------------------
</TABLE>
<PAGE>
                                   APPENDIX A
                         FORM OF PLAN OF REORGANIZATION


THIS  PLAN OF  REORGANIZATION  (the  "Plan")  is  adopted  as of this 4th day of
February, 2000, by Security Income Fund (the "Company") with its principal place
of business at 700 SW Harrison, Topeka, Kansas 66636-0001, on behalf of Security
Diversified  Income  Fund  (formerly,  "Security  U. S.  Government  Fund") (the
"Acquiring  Fund"), a separate series of the Company,  Security Limited Maturity
Bond Fund (an "Acquired  Fund"), a separate series of the Company,  and Security
Corporate Bond Fund (also an "Acquired  Fund"),  another  separate series of the
Company.

This Plan is  intended  to be and is  adopted  as a plan of  reorganization  and
liquidation  within  the  meaning  of Section  368(a)(1)  of the  United  States
Internal Revenue Code of 1986, as amended (the "Code").  The reorganization (the
"Reorganization")  will  consist  of the  transfer  of all of the assets of each
Acquired Fund to the Acquiring  Fund in exchange  solely for Class A and Class B
voting shares ($1.00 par value per share) of the Acquiring Fund (the  "Acquiring
Fund Shares"),  the assumption by the Acquiring Fund of all  liabilities of each
Acquired  Fund,  and  the  distribution  of the  Acquiring  Fund  Shares  to the
shareholders  of each of the  Acquired  Funds in  complete  liquidation  of each
Acquired Fund as provided herein, all upon the terms and conditions  hereinafter
set forth in this Plan.

WHEREAS,  the  Company  is an  open-end,  registered  investment  company of the
management  type and each  Acquired  Fund owns  securities  which  generally are
assets of the character in which the Acquiring Fund is permitted to invest;

WHEREAS,  the Directors of the Company have  determined that the exchange of all
of the assets of each Acquired Fund for Acquiring Fund Shares and the assumption
of all  liabilities  of each Acquired Fund by the Acquiring  Fund is in the best
interests of the Acquiring Fund and its  shareholders  and that the interests of
the existing shareholders of the Acquiring Fund would not be diluted as a result
of this transaction; and

WHEREAS, the Directors of the Company also have determined, with respect to each
Acquired  Fund,  that the exchange of all of the assets of the Acquired Fund for
Acquiring Fund Shares and the assumption of all liabilities of the Acquired Fund
by the  Acquiring  Fund is in the best  interests of the  Acquired  Fund and its
shareholders and that the interests of the existing shareholders of the Acquired
Fund would not be diluted as a result of this transaction;

NOW,  THEREFORE,  the Company, on behalf of the Acquiring Fund and each Acquired
Fund separately, hereby approves the Plan on the following terms and conditions,
such terms and  conditions  applying  in full force to the  Reorganization  with
respect to each Acquired Fund:

 1.  TRANSFER OF ASSETS OF THE ACQUIRED FUND TO THE  ACQUIRING  FUND IN EXCHANGE
     FOR  THE  ACQUIRING  FUND  SHARES,  THE  ASSUMPTION  OF ALL  ACQUIRED  FUND
     LIABILITIES AND THE LIQUIDATION OF THE ACQUIRED FUND

     1.1   Subject  to  the  requisite  approvals  of  the  shareholders  of the
           Acquired Fund and Acquiring  Fund and the other terms and  conditions
           herein  set  forth  and  on the  basis  of  the  representations  and
           warranties  contained  herein,  the Company will  transfer all of the
           Acquired  Fund's  assets,  as set  forth  in  paragraph  1.2,  to the
           Acquiring  Fund, and the Acquiring Fund agrees in exchange  therefor:
           (i) to deliver to the Acquired Fund the number of full and fractional
           Class A and Class B Acquiring Fund Shares  determined by dividing the
           value of the  Acquired  Fund's net assets with respect to each class,
           computed  in the  manner  and as of the time  and  date set  forth in
           paragraph  2.1, by the net asset value of one Acquiring Fund Share of
           the same  class,  computed  in the manner and as of the time and date
           set forth in paragraph 2.2; and (ii) to assume all liabilities of the
           Acquired  Fund.  Such  transactions  shall take place at the  closing
           provided for in paragraph 3.1 (the "Closing").

     1.2   The assets of the Acquired Fund to be acquired by the Acquiring  Fund
           shall  consist  of  all  assets  and  property,   including,  without
           limitation,  all cash, securities,  commodities and futures interests
           and dividends or interests  receivable that are owned by the Acquired
           Fund and any  deferred or prepaid  expenses  shown as an asset on the
           books  of the  Acquired  Fund on the  closing  date  provided  for in
           paragraph 3.1 (the "Closing Date").

     1.3   The  Acquired  Fund  will  endeavor  to  discharge  all of its  known
           liabilities and obligations  prior to the Closing Date. The Acquiring
           Fund shall also assume all of the  liabilities  of the Acquired Fund,
           whether  accrued or  contingent,  known or  unknown,  existing at the
           Valuation  Date.  On or as soon as  practicable  prior to the Closing
           Date, the Acquired Fund will declare and pay to its  shareholders  of
           record  one  or  more  dividends  and/or  other  distributions  that,
           together  with all previous  distributions,  shall have the effect of
           distributing to its  shareholders  (i) all of its investment  company
           taxable income and all of its net realized capital gains, if any, for
           the period from the close of its last  taxable year to the end of the
           business day on the Closing;  and (ii) any  undistributed  investment
           company  taxable  income and net capital  gain from any period to the
           extent not otherwise distributed.

     1.4   Immediately  after the  transfer of assets  provided for in paragraph
           1.1,  the  Acquired  Fund  will  distribute  to the  Acquired  Fund's
           shareholders  of record  with  respect to each  class of its  shares,
           determined  as of  immediately  after  the close of  business  on the
           Closing Date (the "Acquired Fund Shareholders"),  on a pro rata basis
           within  that  class,  the  Acquiring  Fund  Shares of the same  class
           received by the Acquired  Fund  pursuant to  paragraph  1.1, and will
           completely  liquidate.  Such  distribution  and  liquidation  will be
           accomplished,  with  respect  to each  class of the  Acquired  Fund's
           shares, by the transfer of the Acquiring Fund Shares then credited to
           the account of the Acquired Fund on the books of the  Acquiring  Fund
           to open accounts on the share  records of the  Acquiring  Fund in the
           names of the Acquired  Fund  Shareholders.  The  aggregate  net asset
           value of Class A and Class B Acquiring  Fund Shares to be so credited
           to Class A and Class B Acquired Fund Shareholders shall, with respect
           to each  class,  be equal to the  aggregate  net  asset  value of the
           Acquired Fund shares of that same class owned by such shareholders on
           the Closing Date. All issued and  outstanding  shares of the Acquired
           Fund will  simultaneously  be canceled  on the books of the  Acquired
           Fund, although share certificates  representing  interests in Class A
           and Class B shares of the  Acquired  Fund will  represent a number of
           the same class of Acquiring  Fund Shares after the Closing  Date,  as
           determined in accordance  with Section 2.3. The Acquiring  Fund shall
           not issue certificates representing the Class A and Class B Acquiring
           Fund Shares in connection with such exchange.

     1.5   Ownership of Acquiring  Fund Shares will be shown on the books of the
           Acquiring Fund's transfer agent. Shares of the Acquiring Fund will be
           issued in the manner described in the Acquiring  Fund's  then-current
           prospectus and statement of additional information.

     1.6   Any reporting  responsibility of the Acquired Fund including, but not
           limited to, the responsibility for filing of regulatory reports,  tax
           returns,   or  other  documents  with  the  Securities  and  Exchange
           Commission (the "Commission"),  any state securities commission,  and
           any federal,  state or local tax  authorities  or any other  relevant
           regulatory  authority,  is and shall remain the responsibility of the
           Acquired Fund.

 2.  VALUATION

     2.1   The  value  of the  Acquired  Fund's  assets  to be  acquired  by the
           Acquiring Fund hereunder  shall be the value of such assets  computed
           as of  immediately  after the close of business of the New York Stock
           Exchange and after the  declaration  of any  dividends on the Closing
           Date  (such  time and date being  hereinafter  called the  "Valuation
           Date"),  using the  valuation  procedures  set forth in the Company's
           Articles   of   Incorporation,   as   amended   (the   "Articles   of
           Incorporation"),  and the  then-current  prospectus  or  statement of
           additional  information  with  respect  to the  Acquiring  Fund,  and
           valuation procedures established by the Company's Board of Directors.

     2.2   The net asset  value of a Class A and Class B  Acquiring  Fund  Share
           shall be the net asset value per share  computed with respect to that
           class as of  immediately  after the close of business of the New York
           Stock  Exchange  and after the  declaration  of any  dividends on the
           Valuation  Date,  using  the  valuation  procedures  set forth in the
           Company's  Articles of Incorporation and the then-current  prospectus
           or statement of additional  information with respect to the Acquiring
           Fund, and valuation procedures  established by the Company's Board of
           Directors.

     2.3   The  number of the Class A and Class B  Acquiring  Fund  Shares to be
           issued  (including  fractional  shares,  if any) in exchange  for the
           Acquired  Fund's assets shall be determined with respect to each such
           class by  dividing  the value of the net assets  with  respect to the
           Class A and Class B shares of the Acquired  Fund, as the case may be,
           determined  using  the  same  valuation  procedures  referred  to  in
           paragraph  2.1,  by the net asset value of an  Acquiring  Fund Share,
           determined in accordance with paragraph 2.2.

     2.4   All  computations  of  value  shall be made by the  Acquiring  Fund's
           designated record keeping agent.

 3.  CLOSING AND CLOSING DATE

     3.1   The Closing Date shall be April 28,  2000,  or such other date as the
           parties may agree to in writing. All acts taking place at the Closing
           shall be deemed to take place  simultaneously as of immediately after
           the close of business on the Closing Date unless  otherwise agreed to
           by the parties. The close of business on the Closing Date shall be as
           of 4:00 p.m.,  Eastern Time. The Closing shall be held at the offices
           of the  Company or at such other  time  and/or  place as the Board of
           Directors or officers of the Company may designate.

     3.2   The  Company  shall  direct  UMB Bank,  N.A.,  as  custodian  for the
           Acquired  Fund (the  "Custodian"),  to  deliver,  at the  Closing,  a
           certificate  of an authorized  officer  stating that (i) the Acquired
           Fund's portfolio  securities,  cash, and any other assets  ("Assets")
           shall have been delivered in proper form to the Acquiring Fund within
           two  business  days  prior to or on the  Closing  Date,  and (ii) all
           necessary  taxes in  connection  with  the  delivery  of the  Assets,
           including all applicable  federal and state stock transfer stamps, if
           any,  have been paid or  provision  for  payment  has been made.  The
           Acquired Fund's portfolio securities  represented by a certificate or
           other written  instrument  shall be transferred  and delivered by the
           Acquired Fund as of the Closing Date for the account of the Acquiring
           Fund duly  endorsed in proper form for transfer in such  condition as
           to constitute good delivery  thereof.  The Acquired Fund shall direct
           the  Custodian  to  deliver  portfolio   securities  and  instruments
           deposited  with a  securities  depository,  as  defined in Rule 17f-4
           under the Investment Company Act of 1940, as amended (the "1940 Act")
           as of the Closing Date by book entry in accordance with the customary
           practices of such depositories and the custodian for Acquiring Fund.

     3.3   Security Management Company,  LLC, as transfer agent for the Acquired
           Fund (the "Transfer Agent"), shall deliver, on behalf of the Acquired
           Fund, at the Closing a certificate of an authorized  officer  stating
           that its records contain the names and addresses of the Acquired Fund
           Shareholders  and the number and percentage  ownership of outstanding
           Class A and Class B shares owned by each such shareholder immediately
           prior to the Closing.

     3.4   In the  event  that on the  Valuation  Date  (a) the New  York  Stock
           Exchange or another primary  trading market for portfolio  securities
           of the Acquiring Fund or the Acquired Fund shall be closed to trading
           or  trading  thereupon  shall be  restricted,  or (b)  trading or the
           reporting of trading on such Exchange or elsewhere shall be disrupted
           so that,  in the  judgment of the Board of  Directors of the Company,
           accurate  appraisal  of the value of the net assets of the  Acquiring
           Fund or the Acquired Fund is impracticable, the Closing Date shall be
           postponed  until the first  business  day after the day when  trading
           shall have been fully resumed and reporting shall have been restored.

 4.  REPRESENTATIONS AND WARRANTIES

     4.1   The Company, on behalf of the Acquired Fund,  represents and warrants
           to the Acquiring Fund as follows:

           (a)  The Acquired Fund is duly  organized as a series of the Company,
                which is a corporation duly organized and validly existing under
                the laws of the State of Kansas,  with power under the Company's
                Articles  of  Incorporation  to own  all of its  properties  and
                assets  and  to  carry  on  its  business  as  it is  now  being
                conducted;

           (b)  The Company is a registered  investment  company classified as a
                management  company of the open-end type,  and its  registration
                with the Commission as an investment company under the 1940 Act,
                and the  registration  of its shares under the Securities Act of
                1933, as amended ("1933 Act"), are in full force and effect;

           (c)  No consent,  approval,  authorization,  or order of any court or
                governmental  authority is required for the  consummation by the
                Acquired Fund of the transactions  contemplated  herein,  except
                such as have been  obtained  under the 1933 Act, the  Securities
                Exchange  Act of 1934,  as amended (the "1934 Act") and the 1940
                Act, and such as may be required by state securities laws;

           (d)  The current  prospectus and statement of additional  information
                of the  Acquired  Fund  and each  prospectus  and  statement  of
                additional  information  of the  Acquired  Fund used  during the
                three  years  previous  to the  date of this  Plan  conforms  or
                conformed at the time of its use in all material respects to the
                applicable requirements of the 1933 Act and the 1940 Act and the
                rules and regulations of the Commission  thereunder and does not
                or did not at the time of its use include  any untrue  statement
                of a material  fact or omit to state any material  fact required
                to be  stated  therein  or  necessary  to  make  the  statements
                therein,  in light of the  circumstances  under  which they were
                made, not materially misleading;

           (e)  On the  Closing  Date,  the  Acquired  Fund  will  have good and
                marketable title to the Acquired Fund's assets to be transferred
                to the Acquiring  Fund pursuant to paragraph 1.2 and full right,
                power, and authority to sell, assign,  transfer and deliver such
                assets  hereunder free of any liens or other  encumbrances,  and
                upon delivery and payment for such assets,  the  Acquiring  Fund
                will acquire good and marketable  title  thereto,  subject to no
                restrictions  on  the  full  transfer  thereof,  including  such
                restrictions  as might arise  under the 1933 Act,  other than as
                disclosed to the Acquiring Fund;

           (f)  The Acquired Fund is not engaged  currently,  and the execution,
                delivery and performance of this Plan will not result,  in (i) a
                material violation of the Company's Articles of Incorporation or
                By-Laws or of any agreement,  indenture,  instrument,  contract,
                lease or other undertaking to which the Acquired Fund is a party
                or by  which  it is  bound,  or  (ii)  the  acceleration  of any
                obligation,   or  the  imposition  of  any  penalty,  under  any
                agreement, indenture,  instrument,  contract, lease, judgment or
                decree to which the  Acquired  Fund is a party or by which it is
                bound;

           (g)  The Acquired Fund has no material contracts or other commitments
                (other than this Plan) that will be terminated with liability to
                it prior to the Closing Date;

           (h)  Except as otherwise  disclosed in writing to and accepted by the
                Acquiring  Fund, no litigation or  administrative  proceeding or
                investigation  of or before  any court or  governmental  body is
                presently pending or, to its knowledge,  threatened  against the
                Acquired  Fund  or any of its  properties  or  assets  that,  if
                adversely determined,  would materially and adversely affect its
                financial condition or the conduct of its business. The Acquired
                Fund  knows of no facts  which  might  form  the  basis  for the
                institution of such proceedings and is not a party to or subject
                to the provisions of any order,  decree or judgment of any court
                or governmental  body which materially and adversely affects its
                business or its ability to consummate  the  transactions  herein
                contemplated;

           (i)  The   Statement  of  Assets  and   Liabilities,   Statements  of
                Operations   and  Changes  in  Net  Assets,   and   Schedule  of
                Investments  of the Acquired Fund at December 31, 1999 have been
                audited by Ernst & Young,  LLP,  independent  accountants.  Such
                statements are in accordance with generally accepted  accounting
                principles ("GAAP")  consistently  applied,  and such statements
                (copies  of which have been  furnished  to the  Acquiring  Fund)
                present  fairly,  in  all  material   respects,   the  financial
                condition  of the  Acquired  Fund as of such date in  accordance
                with GAAP, and there are no known contingent  liabilities of the
                Acquired  Fund  required to be reflected on the balance sheet or
                in the notes thereto;

           (j)  Since December 31, 1999, there has not been any material adverse
                change  in the  Acquired  Fund's  financial  condition,  assets,
                liabilities  or business,  other than  changes  occurring in the
                ordinary  course of business,  or any incurrence by the Acquired
                Fund of  indebtedness  maturing more than one year from the date
                such indebtedness was incurred, except as otherwise disclosed to
                and  accepted by the  Acquiring  Fund.  For the purposes of this
                subparagraph  (j), a decline in net asset value per share of the
                Acquired  Fund due to declines in market values of securities in
                the Acquired  Fund's  portfolio,  the discharge of Acquired Fund
                liabilities,  or the  redemption  of  Acquired  Fund  shares  by
                shareholders  of  the  Acquired  Fund  shall  not  constitute  a
                material adverse change;

           (k)  On the  Closing  Date,  all  Federal  and other tax  returns and
                reports of the Acquired  Fund required by law to have been filed
                by such date  (including any  extensions)  shall have been filed
                and are or will be correct  in all  material  respects,  and all
                Federal  and other taxes shown as due or required to be shown as
                due on  said  returns  and  reports  shall  have  been  paid  or
                provision shall have been made for the payment  thereof,  and to
                the best of the  Acquired  Fund's  knowledge,  no such return is
                currently  under audit and no assessment  has been asserted with
                respect to such returns;

           (l)  For each taxable year of its  operation  (including  the taxable
                year ending on the Closing Date),  the Acquired Fund has met the
                requirements of Subchapter M of the Code for  qualification as a
                regulated  investment  company  and has elected to be treated as
                such,  has been eligible to and has computed its Federal  income
                tax under Section 852 of the Code, and will have distributed all
                of its  investment  company  taxable income and net capital gain
                (as  defined in the Code) that has  accrued  through the Closing
                Date,  and before the Closing Date will have declared  dividends
                sufficient to distribute all of its investment  company  taxable
                income and net capital gain for the period ending on the Closing
                Date;

           (m)  All issued and outstanding  shares of the Acquired Fund are, and
                on the  Closing  Date  will be,  duly  and  validly  issued  and
                outstanding,  fully paid and  non-assessable  by the Company and
                have been  offered and sold in every  state and the  District of
                Columbia in compliance in all material  respects with applicable
                registration  requirements of the 1933 Act and state  securities
                laws. All of the issued and  outstanding  shares of the Acquired
                Fund will, at the time of Closing, be held by the persons and in
                the amounts set forth in the records of the Transfer  Agent,  on
                behalf of the Acquired  Fund, as provided in paragraph  3.3. The
                Acquired Fund does not have outstanding any options, warrants or
                other rights to  subscribe  for or purchase any of the shares of
                the  Acquired  Fund,  nor  is  there  outstanding  any  security
                convertible into any of the Acquired Fund shares;

           (n)  The  adoption and  performance  of this Plan will have been duly
                authorized prior to the Closing Date by all necessary action, if
                any, on the part of the Directors of the Company,  and,  subject
                to the approval of the  shareholders  of the Acquired Fund, this
                Plan will  constitute  a valid  and  binding  obligation  of the
                Acquired  Fund,   enforceable  in  accordance  with  its  terms,
                subject,   as  to   enforcement,   to  bankruptcy,   insolvency,
                reorganization,   moratorium  and  other  laws  relating  to  or
                affecting creditors' rights and to general equity principles;

           (o)  The  information to be furnished by the Acquired Fund for use in
                registration  statements,  proxy  materials and other  documents
                filed or to be filed with any federal, state or local regulatory
                authority  (including  the National  Association  of  Securities
                Dealers,  Inc.),  which may be necessary in connection  with the
                transactions contemplated hereby, shall be accurate and complete
                in all  material  respects  and  shall  comply  in all  material
                respects with Federal  securities and other laws and regulations
                thereunder applicable thereto.

     4.2   The Company, on behalf of the Acquiring Fund, represents and warrants
           to the Acquired Fund as follows:

           (a)  The Acquiring Fund is duly organized as a series of the Company,
                which is a corporation duly organized and validly existing under
                the laws of the State of Kansas,  with power under the Company's
                Articles  of  Incorporation  to own  all of its  properties  and
                assets  and  to  carry  on  its  business  as  it is  now  being
                conducted;

           (b)  The Company is a registered  investment  company classified as a
                management  company of the open-end type,  and its  registration
                with the Commission as an investment  company under the 1940 Act
                and the registration of its shares under the 1933 Act, including
                the shares of the Acquiring Fund, are in full force and effect;

           (c)  No consent,  approval,  authorization,  or order of any court or
                governmental  authority is required for the  consummation by the
                Acquiring Fund of the transactions  contemplated herein,  except
                such as have been obtained  under the 1933 Act, the 1934 Act and
                the  1940 Act and such as may be  required  by state  securities
                laws;

           (d)  The current  prospectus and statement of additional  information
                of the  Acquiring  Fund and each  prospectus  and  statement  of
                additional  information  of the  Acquiring  Fund used during the
                three  years  previous  to the  date of this  Plan  conforms  or
                conformed at the time of its use in all material respects to the
                applicable requirements of the 1933 Act and the 1940 Act and the
                rules and regulations of the Commission  thereunder and does not
                or did not at the time of its use include  any untrue  statement
                of a material  fact or omit to state any material  fact required
                to be  stated  therein  or  necessary  to  make  the  statements
                therein,  in light of the  circumstances  under  which they were
                made, not materially misleading;

           (e)  On the  Closing  Date,  the  Acquiring  Fund  will have good and
                marketable  title to the Acquiring  Fund's  assets,  free of any
                liens of other encumbrances,  except those liens or encumbrances
                as to which the Acquired Fund has received  notice and necessary
                documentation at or prior to the Closing;

           (f)  The Acquiring Fund is not engaged currently,  and the execution,
                delivery and performance of this Plan will not result,  in (i) a
                material violation of the Company's Articles of Incorporation or
                By-Laws or of any agreement,  indenture,  instrument,  contract,
                lease or other  undertaking  to which  the  Acquiring  Fund is a
                party or by which it is bound,  or (ii) the  acceleration of any
                obligation,   or  the  imposition  of  any  penalty,  under  any
                agreement, indenture,  instrument,  contract, lease, judgment or
                decree to which the Acquiring  Fund is a party or by which it is
                bound;

           (g)  Except as otherwise  disclosed in writing to and accepted by the
                Acquired  Fund, no litigation  or  administrative  proceeding or
                investigation  of or before  any court or  governmental  body is
                presently pending or, to its knowledge,  threatened  against the
                Acquiring  Fund or any of its  properties  or  assets  that,  if
                adversely determined,  would materially and adversely affect its
                financial  condition  or  the  conduct  of  its  business.   The
                Acquiring  Fund knows of no facts which might form the basis for
                the  institution  of such  proceedings  and is not a party to or
                subject to the  provisions  of any order,  decree or judgment of
                any court or  governmental  body which  materially and adversely
                affects  its   business  or  its  ability  to   consummate   the
                transactions herein contemplated;

           (h)  The   Statement  of  Assets  and   Liabilities,   Statements  of
                Operations and Changes in Net Assets and Schedule of Investments
                of the Acquiring  Fund at December 31, 1999 have been audited by
                Ernst & Young LLP, independent accountants.  Such statements are
                in  accordance  with  GAAP   consistently   applied,   and  such
                statements  (copies of which have been furnished to the Acquired
                Fund) present fairly,  in all material  respects,  the financial
                condition of the  Acquiring  Fund as of such date in  accordance
                with GAAP, and there are no known contingent  liabilities of the
                Acquiring  Fund required to be reflected on the balance sheet or
                in the notes thereto;

           (i)  Since December 31, 1999, there has not been any material adverse
                change in the  Acquiring  Fund's  financial  condition,  assets,
                liabilities  or business,  other than  changes  occurring in the
                ordinary course of business,  or any incurrence by the Acquiring
                Fund of  indebtedness  maturing more than one year from the date
                such indebtedness was incurred, except as otherwise disclosed to
                and  accepted  by  the  Acquired  Fund.  For  purposes  of  this
                subparagraph  (i), a decline in net asset value per share of the
                Acquiring Fund due to declines in market values of securities in
                the Acquiring Fund's portfolio,  the discharge of Acquiring Fund
                liabilities,  or the  redemption  of  Acquiring  Fund  Shares by
                shareholders  of the  Acquiring  Fund,  shall not  constitute  a
                material adverse change;

           (j)  On the  Closing  Date,  all  Federal  and other tax  returns and
                reports of the Acquiring Fund required by law to have been filed
                by such date  (including any  extensions)  shall have been filed
                and are or will be correct  in all  material  respects,  and all
                Federal  and other taxes shown as due or required to be shown as
                due on  said  returns  and  reports  shall  have  been  paid  or
                provision shall have been made for the payment  thereof,  and to
                the best of the  Acquiring  Fund's  knowledge  no such return is
                currently  under audit and no assessment  has been asserted with
                respect to such returns;

           (k)  For each taxable year of its  operation,  the Acquiring Fund has
                met  the   requirements   of   Subchapter  M  of  the  Code  for
                qualification as a regulated  investment company and has elected
                to be treated as such, has been eligible to and has computed its
                Federal   income  tax  under  Section  852  of  the  Code,   has
                distributed all of its investment company taxable income and net
                capital  gain (as defined in the Code) for periods  ending prior
                to the  Closing  Date,  and  will  do so for  the  taxable  year
                including the Closing Date;

           (l)  All issued and outstanding Acquiring Fund Shares are, and on the
                Closing Date will be, duly and validly  issued and  outstanding,
                fully  paid and  non-assessable  by the  Company  and have  been
                offered and sold in every state and the  District of Columbia in
                compliance in all material respects with applicable registration
                requirements  of the 1933 Act and  state  securities  laws.  The
                Acquiring Fund does not have  outstanding any options,  warrants
                or other rights to subscribe for or purchase any Acquiring  Fund
                Shares,  nor is there outstanding any security  convertible into
                any Acquiring Fund Shares;

           (m)  The adoption and  performance  of this Plan will have been fully
                authorized prior to the Closing Date by all necessary action, if
                any,  on the part of the  Directors  of the Company on behalf of
                the  Acquiring  Fund and this Plan will  constitute  a valid and
                binding  obligation  of  the  Acquiring  Fund,   enforceable  in
                accordance  with  its  terms,  subject,  as to  enforcement,  to
                bankruptcy,  insolvency,  reorganization,  moratorium  and other
                laws relating to or affecting  creditors'  rights and to general
                equity principles;

           (n)  The Class A and Class B  Acquiring  Fund Shares to be issued and
                delivered to the Acquired  Fund, for the account of the Acquired
                Fund  Shareholders,  pursuant to the terms of this Plan, will on
                the Closing Date have been duly  authorized  and, when so issued
                and delivered,  will be duly and validly  issued  Acquiring Fund
                Shares,  and  will  be  fully  paid  and  non-assessable  by the
                Company;

           (o)  The information to be furnished by the Acquiring Fund for use in
                the registration statements, proxy materials and other documents
                that  may be  necessary  in  connection  with  the  transactions
                contemplated  hereby  shall  be  accurate  and  complete  in all
                material respects and shall comply in all material respects with
                Federal  securities  and other laws and  regulations  applicable
                thereto; and

           (p)  That insofar as it relates to Company or the Acquiring Fund, the
                Registration  Statement  relating to the  Acquiring  Fund Shares
                issuable hereunder, and the proxy materials of the Acquired Fund
                to be included in the Registration Statement,  and any amendment
                or supplement to the foregoing, will, from the effective date of
                the  Registration  Statement  through the date of the meeting of
                shareholders of the Acquired Fund  contemplated  therein (i) not
                contain any untrue statement of a material fact or omit to state
                a material  fact  required to be stated  therein or necessary to
                make the statements therein, in light of the circumstances under
                which such  statements  were  made,  not  materially  misleading
                provided,  however,  that the  representations and warranties in
                this  subparagraph  (p)  shall  not  apply to  statements  in or
                omissions from the Registration  Statement made in reliance upon
                and in  conformity  with  information  that was furnished by the
                Acquired  Fund for use therein,  and (ii) comply in all material
                respects  with the  provisions of the 1933 Act, the 1934 Act and
                the 1940 Act and the rules and regulations thereunder.

 5.  COVENANTS OF THE ACQUIRING FUND AND THE ACQUIRED FUND

     5.1   The  Acquiring  Fund and the  Acquired  Fund  each will  operate  its
           business  in the  ordinary  course  between  the date  hereof and the
           Closing  Date,  it being  understood  that  such  ordinary  course of
           business  will  include  the  declaration  and  payment of  customary
           dividends and  distributions,  and any other distribution that may be
           advisable.

     5.2   To the extent  required by  applicable  law,  the Company will call a
           meeting of the  shareholders  of the Acquired  Fund and the Acquiring
           Fund to consider  and act upon this Plan and to take all other action
           necessary to obtain approval of the transactions contemplated herein.

     5.3   The Acquired  Fund  covenants  that the Class A and Class B Acquiring
           Fund Shares to be issued  hereunder  are not being  acquired  for the
           purpose of making any distribution thereof,  other than in accordance
           with the terms of this Plan.

     5.4   The Acquired  Fund will assist the Acquiring  Fund in obtaining  such
           information as the Acquiring Fund reasonably  requests concerning the
           beneficial ownership of the Acquired Fund shares.

     5.5   Subject to the  provisions of this Plan,  the Acquiring  Fund and the
           Acquired Fund will each take, or cause to be taken,  all action,  and
           do or cause to be done, all things  reasonably  necessary,  proper or
           advisable  to  consummate   and  make   effective  the   transactions
           contemplated by this Plan.

     5.6   As soon as is reasonably  practicable after the Closing, the Acquired
           Fund  will  make  a  liquidating  distribution  to  its  shareholders
           consisting of the Class A and Class B Acquiring Fund Shares  received
           at the Closing.

     5.7   The  Acquiring  Fund  and  the  Acquired  Fund  shall  each  use  its
           reasonable  best efforts to fulfill or obtain the  fulfillment of the
           conditions precedent to effect the transactions  contemplated by this
           Plan as promptly as practicable.

     5.8   The Acquired Fund covenants  that it will,  from time to time, as and
           when reasonably  requested by the Acquiring Fund, execute and deliver
           or cause to be executed and delivered all such  assignments and other
           instruments,  and will take or cause to be taken such further  action
           as the Acquiring Fund may  reasonably  deem necessary or desirable in
           order  to vest in and  confirm  the  Acquiring  Fund's  title  to and
           possession  of all the assets and  otherwise  to carry out the intent
           and purpose of this Plan.

     5.9   The  Acquiring  Fund will use all  reasonable  efforts  to obtain the
           approvals and  authorizations  required by the 1933 Act, the 1940 Act
           and such of the state blue sky or securities laws as may be necessary
           in order to continue its operations after the Closing Date.

 6.  CONDITIONS PRECEDENT TO OBLIGATIONS OF THE ACQUIRED FUND

     The  obligations  of the  Acquired  Fund  to  consummate  the  transactions
     provided for herein shall be subject,  at the Acquired Fund's election,  to
     the  performance  by the  Acquiring  Fund  of  all  the  obligations  to be
     performed by it hereunder on or before the Closing  Date,  and, in addition
     thereto, the following further conditions:

     6.1   All  representations  and  warranties of the  Acquiring  Fund and the
           Company  contained  in this  Plan  shall be true and  correct  in all
           material  respects as of the date  hereof and,  except as they may be
           affected by the  transactions  contemplated  by this Plan,  as of the
           Closing Date,  with the same force and effect as if made on and as of
           the Closing Date;

     6.2   The Company and the  Acquiring  Fund shall have  performed all of the
           covenants  and complied with all of the  provisions  required by this
           Plan  to be  performed  or  complied  with  by the  Company  and  the
           Acquiring Fund on or before the Closing Date; and

     6.3   The  Acquired  Fund and the  Acquiring  Fund shall have agreed on the
           number of full and fractional  Acquiring Fund Shares of each Class to
           be issued in connection with the Reorganization after such number has
           been calculated in accordance with paragraph 1.1.

 7.  CONDITIONS PRECEDENT TO OBLIGATIONS OF THE ACQUIRING FUND

     The obligations of the Acquiring Fund to complete the transactions provided
     for herein  shall be subject,  at the  Acquiring  Fund's  election,  to the
     performance by the Acquired Fund of all of the  obligations to be performed
     by it hereunder on or before the Closing Date and, in addition thereto, the
     following conditions:

     7.1   All  representations  and  warranties of the Company and the Acquired
           Fund contained in this Plan shall be true and correct in all material
           respects as of the date hereof and, except as they may be affected by
           the  transactions  contemplated by this Plan, as of the Closing Date,
           with the same  force and  effect as if made on and as of the  Closing
           Date;

     7.2   The Company and the  Acquired  Fund shall have  performed  all of the
           covenants  and complied with all of the  provisions  required by this
           Plan to be performed or complied  with by the Company or the Acquired
           Fund on or before the Closing Date;

     7.3   The  Acquired  Fund and the  Acquiring  Fund shall have agreed on the
           number of full and fractional  Acquiring Fund Shares of each Class to
           be issued in connection with the Reorganization after such number has
           been calculated in accordance with paragraph 1.1;

     7.4   The  Acquired  Fund shall have  declared and paid a  distribution  or
           distributions  prior to the Closing that,  together with all previous
           distributions,   shall  have  the  effect  of   distributing  to  its
           shareholders (i) all of its investment company taxable income and all
           of its net realized  capital  gains,  if any, for the period from the
           close of its  last  taxable  year to 4:00  p.m.  Eastern  Time on the
           Closing; and (ii) any undistributed investment company taxable income
           and net  realized  capital  gains  from any  period to the extent not
           otherwise already distributed.

 8.  FURTHER  CONDITIONS  PRECEDENT TO OBLIGATIONS OF THE ACQUIRING FUND AND THE
     ACQUIRED FUND

     If any of the  conditions  set forth  below do not  exist on or before  the
     Closing Date with respect to the Acquired Fund or the Acquiring  Fund,  the
     other  party  to  this  Plan  shall,  at its  option,  not be  required  to
     consummate the transactions contemplated by this Plan:

     8.1   The Plan and the  transactions  contemplated  herein  shall have been
           approved  by the  requisite  vote,  if  any,  of the  holders  of the
           outstanding  shares of the Acquired  Fund and the  Acquiring  Fund in
           accordance   with  the  provisions  of  the  Company's   Articles  of
           Incorporation,  By-Laws,  applicable Kansas law and the 1940 Act, and
           certified  copies of the  resolutions  evidencing such approval shall
           have been delivered to the Acquiring Fund.  Notwithstanding  anything
           herein to the contrary,  neither the Acquiring  Fund nor the Acquired
           Fund may waive the conditions set forth in this paragraph 8.1;

     8.2   On the Closing Date,  no action,  suit or other  proceeding  shall be
           pending  or,  to  its  knowledge,  threatened  before  any  court  or
           governmental agency in which it is sought to restrain or prohibit, or
           obtain damages or other relief in connection  with,  this Plan or the
           transactions contemplated herein;

     8.3   All  consents  of other  parties and all other  consents,  orders and
           permits of Federal,  state and local  regulatory  authorities  deemed
           necessary  by the  Acquiring  Fund or the  Acquired  Fund  to  permit
           consummation,   in  all  material   respects,   of  the  transactions
           contemplated hereby shall have been obtained, except where failure to
           obtain any such consent,  order or permit would not involve a risk of
           a  material  adverse  effect  on  the  assets  or  properties  of the
           Acquiring  Fund or the  Acquired  Fund,  provided  that either  party
           hereto may for itself waive any of such conditions;

     8.4   The Registration Statement shall have become effective under the 1933
           Act and no stop orders  suspending  the  effectiveness  thereof shall
           have been issued and, to the best knowledge of the parties hereto, no
           investigation   or  proceeding  for  that  purpose  shall  have  been
           instituted or be pending,  threatened or contemplated  under the 1933
           Act; and

     8.5   Dechert  Price & Rhoads  shall  deliver an opinion  addressed  to the
           Company  substantially  to the effect that, based upon certain facts,
           assumptions,  and  representations,  the transaction  contemplated by
           this Plan shall  constitute  a tax-free  reorganization  for  Federal
           income tax purposes,  unless, based on the circumstances  existing at
           the time of the Closing,  Dechert Price & Rhoads  determines that the
           transaction  contemplated  by this Plan does not qualify as such. The
           delivery of such opinion is conditioned upon receipt by Dechert Price
           &  Rhoads  of  representations  it  shall  request  of  the  Company.
           Notwithstanding  anything herein to the contrary, the Company may not
           waive the condition set forth in this paragraph 8.5.

 9.  BROKERAGE FEES AND EXPENSES

     9.1   The Acquiring  Fund  represents  and warrants to the other that there
           are no  brokers or  finders  entitled  to  receive  any  payments  in
           connection with the transactions provided for herein.

     9.2   The expenses relating to the proposed  Reorganization will be paid by
           the  Acquired  Fund and the  Acquiring  Fund pro rata  based upon the
           relative  net assets of the Funds as of the close of  business on the
           record date for  determining  the  shareholders  of the Acquired Fund
           entitled   to  vote  on  the   Reorganization.   The   costs  of  the
           Reorganization shall include, but not be limited to, costs associated
           with  obtaining any necessary  order of exemption  from the 1940 Act,
           preparation of the Registration Statement,  printing and distributing
           the  Acquiring  Fund's  prospectus  and  the  Acquired  Fund's  proxy
           materials, legal fees, accounting fees, securities registration fees,
           and expenses of holding shareholders'  meetings.  Notwithstanding any
           of the  foregoing,  expenses  will in any  event be paid by the party
           directly  incurring  such  expenses  if and to the  extent  that  the
           payment  by the  other  party of such  expenses  would  result in the
           disqualification  of such party as a "regulated  investment  company"
           within the meaning of Section 851 of the Code.

10.  ENTIRE AGREEMENT; SURVIVAL OF WARRANTIES

     The representations,  warranties and covenants contained in this Plan or in
     any document  delivered  pursuant  hereto or in connection  herewith  shall
     survive the consummation of the transactions  contemplated  hereunder.  The
     covenants to be performed after the Closing shall survive the Closing.

11.  TERMINATION

     This Plan and the  transactions  contemplated  hereby may be terminated and
     abandoned by resolution of the Board of Directors, at any time prior to the
     Closing Date, if  circumstances  should develop that, in the opinion of the
     Board, make proceeding with the Plan inadvisable.

12.  AMENDMENTS

     This Plan may be amended, modified or supplemented in such manner as may be
     set forth in writing by the authorized  officers of the Company;  provided,
     however,  that  following  any  meeting of the  shareholders  called by the
     Acquired Fund pursuant to paragraph 5.2 of this Plan, no such amendment may
     have the effect of changing the  provisions for  determining  the number of
     the Class A or Class B Acquiring  Fund Shares to be issued to the  Acquired
     Fund  Shareholders  under this Plan to the  detriment of such  shareholders
     without their further approval.

13.  HEADINGS; GOVERNING LAW; ASSIGNMENT; LIMITATION OF LIABILITY

     13.1  The Article and  paragraph  headings  contained  in this Plan are for
           reference  purposes  only and shall not affect in any way the meaning
           or interpretation of this Plan.

     13.2  This Plan shall be governed by and construed in  accordance  with the
           laws of the  State of Kansas  without  regard  to its  principles  of
           conflicts of laws.

     13.3  This Plan shall bind and inure to the benefit of the  parties  hereto
           and their  respective  successors  and assigns,  but no assignment or
           transfer  hereof or of any rights or obligations  hereunder  shall be
           made by any party  without  the written  consent of the other  party.
           Nothing herein expressed or implied is intended or shall be construed
           to confer upon or give any person,  firm or  corporation,  other than
           the parties hereto and their respective  successors and assigns,  any
           rights or remedies under or by reason of this Plan.

     13.4  It is expressly agreed that the obligations of the parties  hereunder
           shall  not  be  binding  upon  any of  the  Directors,  shareholders,
           nominees,  officers,  agents, or employees of the Company personally,
           but  shall  bind only  property  of such  party.  The  execution  and
           delivery  by such  officers  shall not be deemed to have been made by
           any of them  individually  or to impose any  liability on any of them
           personally, but shall bind only the property of each party.

IN WITNESS  WHEREOF,  the Board of Directors of the Company has caused this Plan
to be approved on behalf of the Acquiring Fund and the Acquired Funds.

                                         SECURITY INCOME FUND


                                         By:
                                                --------------------------------
                                         Name:
                                         Title:
<PAGE>
                                   APPENDIX B


The  following is a list of the current  funds in the  Security  Group of Mutual
Funds and the classes of shares that are currently offered by each fund:

- --------------------------------------------------------------------------------
FUND                                                             CLASSES OFFERED
- --------------------------------------------------------------------------------
Security Equity Fund..........................................     A, B and C
Security Global Fund..........................................     A, B and C
Security Total Return Fund....................................     A, B and C
Security Mid Cap Value Fund...................................     A, B and C
Security Small Cap Growth Fund................................     A, B and C
Security Enhanced Index Fund..................................     A, B and C
Security International Fund...................................     A, B and C
Security Select 25 Fund.......................................     A, B and C
Security Ultra Fund...........................................     A, B and C
Security Growth and Income Fund...............................     A, B and C
Security Municipal Bond Fund..................................     A and B
Security High Yield Fund......................................     A and B
Security Cash Fund............................................     A
Security Capital Preservation Fund............................     A, B and C
- --------------------------------------------------------------------------------
<PAGE>
                                   APPENDIX C


As of February 28, 2000, the following  persons owned  beneficially or of record
5% or more of the outstanding shares of the Diversified Income Fund:

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------
                                                      % OF DIVERSIFIED      % OF DIVERSIFIED
                                                     INCOME FUND BEFORE     INCOME FUND AFTER
NAME AND ADDRESS                           CLASS       REORGANIZATION        REORGANIZATION
- ---------------------------------------------------------------------------------------------
<S>                                          <C>            <C>                    <C>
Capitol Federal Foundation                   A              18%                    12%
Attention:  Jack Hamilton
700 South Kansas Avenue, Suite 517
Topeka, KS 66603-3823
- ---------------------------------------------------------------------------------------------
Oklahoma Co. Emp. Ret. Fund                  A              21%                    5%
Attention:  Betty Hurt/Forrest Freeman
320 Robert S. Kerr, Room 307
Oklahoma City, OK 73102-3441
- ---------------------------------------------------------------------------------------------
Security Benefit Life                        A              11%                    3%
SBL Employee Pension Plan
Attention:  John R. Wood - FI
700 SW Harrison Street
Topeka, KS 66636-0001
- ---------------------------------------------------------------------------------------------
</TABLE>

As of February 28, 2000, the following persons owned of record 5% or more of the
outstanding shares of the Corporate Bond Fund:

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------
                                                      % OF CORPORATE      % OF DIVERSIFIED
                                                     BOND FUND BEFORE     INCOME FUND AFTER
NAME AND ADDRESS                           CLASS      REORGANIZATION       REORGANIZATION
- -------------------------------------------------------------------------------------------
<S>                                          <C>           <C>                   <C>
Capitol Federal Foundation                   A             11%                   12%
Attention:  Jack Hamilton
700 South Kansas Avenue, Suite 517
Topeka, KS 66603-3823
- -------------------------------------------------------------------------------------------
Mercantile Bank of St. Louis                 A             11%                   7%
Attention:  Trust Securities Unit 17-1
P.O. Box 387
St. Louis, MO 63166-0387
Theresa A. Young
- -------------------------------------------------------------------------------------------
Security Benefit Life Ins. Co. Trste.        A             7%                    5%
Agent for Security Benefit Life
700 SW Harrison Street
Topeka, KS 66636-0001
House Account
- -------------------------------------------------------------------------------------------
</TABLE>

As of February 28, 2000, the following  persons owned  beneficially or of record
5% or more of the outstanding shares of the Limited Maturity Bond Fund:

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------
                                                     % OF LIMITED MATURITY     % OF DIVERSIFIED
                                                       BOND FUND BEFORE        INCOME FUND AFTER
NAME AND ADDRESS                           CLASS        REORGANIZATION          REORGANIZATION
- ------------------------------------------------------------------------------------------------
<S>                                          <C>              <C>                     <C>
Security Benefit Group, Inc.                 A                50%                      5%
Attention:  Finance Reporting
700 SW Harrison Street
Topeka, KS 66636-0002
House Account
- ------------------------------------------------------------------------------------------------
Security Benefit Group, Inc.                 A                 7%                     .3%
Trst. SBL Charitable Trust
700 SW Harrison Street
Topeka, KS 66636-0002
House Account
- ------------------------------------------------------------------------------------------------
Sisters of St. Francis Ministry Fund         A                19%                      1%
3390 Windsor Avenue
Dubuque, IA 52001-1326
Attention:  Sharon S. Rettig
- ------------------------------------------------------------------------------------------------
Security Benefit Group, Inc.                 B                50%                      3%
Attention:  Finance Reporting
700 SW Harrison Street
Topeka, KS 66636-0002
House Account
- ------------------------------------------------------------------------------------------------
Sterling Trust Company                       B                 8%                     .5%
Cust. Kaminer Findley Ltd. Partnership
P.O. Box 2526
Waco, TX 76702-2526
Attention:  Mark Doroff
- ------------------------------------------------------------------------------------------------
</TABLE>
<PAGE>
                                     PART B


                              SECURITY INCOME FUND

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

                       Statement of Additional Information
                                  April 3, 2000

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

Acquisition of the Assets and Liabilities      By and in Exchange for Shares of
of Corporate Bond Series ("Corporate Bond      Diversified Income Series
Fund"), and Limited Maturity Bond Series       (formerly U.S. Government Series)
("Limited Maturity Bond Fund"), of             ("Diversified Income Fund") of
Security Income Fund                           Security Income Fund
700 SW Harrison Street                         700 SW Harrison Street
Topeka, Kansas 66636                           Topeka, Kansas 66636


This  Statement of Additional  Information is available to the  Shareholders  of
Corporate Bond Fund and Limited Maturity Bond Fund in connection with a proposed
transaction whereby all of the assets and liabilities of Corporate Bond Fund and
Limited  Maturity Bond Fund will be transferred  to  Diversified  Income Fund in
exchange for shares of Diversified Income Fund.

This Statement of Additional Information of the Diversified Income Fund consists
of this  cover  page  and the  following  documents,  each of  which  was  filed
electronically  with the Securities and Exchange  Commission and is incorporated
by reference herein:

1.  The  Statement  of  Additional  Information  for  Diversified  Income  Fund,
    Corporate Bond Fund and Limited  Maturity Bond Fund dated April 30, 1999, as
    supplemented November 1, 1999 and February 7, 2000.

2.  The Financial Statements of Diversified Income Fund, Corporate Bond Fund and
    Limited Maturity Bond Fund are included in the Funds' Annual Report filed on
    Form N-30D for the year ended  December 31, 1999,  Registration  No. 2-38414
    (filed February 28, 2000).

This Statement of Additional Information is not a prospectus. A Prospectus/Proxy
Statement dated April 3, 2000 relating to the reorganization of the of Corporate
Bond Fund and Limited  Maturity Bond Fund may be obtained,  without  charge,  by
writing to Security Management at 700 SW Harrison Street,  Topeka,  Kansas 66636
or calling (800) 888-2461.  This Statement of Additional  Information  should be
read in conjunction with the Prospectus/Proxy Statement.
<PAGE>
   The following  tables set forth the unaudited pro forma  statements of assets
and liabilities and unaudited pro forma statements of operations of the Funds as
of and for the year ended  December  31,  1999 and as adjusted to give effect to
the reorganization.

<TABLE>
                                           PRO FORMA STATEMENTS OF ASSETS AND LIABILITIES
                                                          DECEMBER 31, 1999
                                                             (UNAUDITED)

<CAPTION>
                                                                                         LIMITED                        COMBINED
                                                         CORPORATE       DIVERSIFIED     MATURITY      PRO FORMA       DIVERSIFIED
                                                        BOND SERIES     INCOME SERIES   BOND SERIES   ADJUSTMENTS     INCOME SERIES
                                                        ----------------------------------------------------------------------------
<S>                                                     <C>              <C>            <C>            <C>             <C>
ASSETS
Investments, at value (identified cost $61,341,582,
  $15,268,046, $7,189,528, $0 and $83,799,156
  respectively)......................................   $ 57,858,846     $14,573,950    $6,794,583           ---       $ 79,227,379
Cash.................................................            ---         298,257           ---           ---            298,257
Receivables:
  Fund shares sold...................................          1,304              93         1,097           ---              2,494
  Interest ..........................................        945,396         214,446       133,564           ---          1,293,406
  Security Management Company........................          3,605             138           ---           ---              3,743
Prepaid expenses.....................................         10,072           9,144         4,159           ---             23,375
                                                         -----------      ----------     ---------     ---------        -----------
    Total assets.....................................   $ 58,819,223     $15,096,028    $6,933,403          $  0       $ 80,848,654
                                                         -----------      ----------     ---------     ---------        -----------
LIABILITIES
  Payable for:
    Fund shares redeemed.............................   $     27,530     $     1,284    $      ---          $---       $     28,814
    Cash Overdraft...................................         14,256             ---        13,035           ---                ---
    Management fees..................................         25,309             ---           ---           ---             25,309
    Custodian fees...................................            645             504           435           ---              1,584
    Transfer and administration fees.................         12,971           6,649         1,113           ---             20,733
    Professional fees................................          4,000           4,000         4,000           ---             12,000
    12B-1distribution plan fees......................        105,534           3,504        18,668           ---            127,706
    Security Management Company......................            ---             ---           217           ---                217
    Miscellaneous fees...............................         14,547           1,901           623           ---             17,071
                                                         -----------      ----------     ---------     ---------        -----------
      Total liabilities..............................        204,792          17,842        38,091             0            260,725
                                                         -----------      ----------     ---------     ---------        -----------
NET ASSETS                                              $ 58,614,431     $15,078,186    $6,895,312          $  0       $ 80,587,929
                                                         ===========      ==========     =========     =========        ===========
NET ASSETS CONSIST OF:
Paid in capital......................................   $ 74,595,336     $17,126,033    $7,318,712          $  0       $ 99,040,081
Undistributed net investment income (loss)...........         (6,864)         11,083             0             0             17,947
Accumulated undistributed net realized gain (loss)
  on sale of investments.............................     12,505,033      (1,364,835)      (28,455)            0         13,898,323
Net unrealized appreciation (depreciation) in value
  of investments.....................................     (3,482,736)       (694,095)     (394,945)            0         (4,571,776)
                                                         -----------      ----------     ---------     ---------        -----------
    Total net assets.................................   $ 58,614,431     $15,078,186    $6,895,312          $  0       $ 80,587,929
                                                         ===========      ==========     =========     =========        ===========

Class "A" Shares
Capital shares outstanding...........................      7,645,684       2,812,887       581,851     3,950,975(A)      14,991,397
Net assets ..........................................   $ 49,476,637     $12,722,594    $5,570,226            $0       $ 67,769,459
                                                         -----------      ----------     ---------     ---------        -----------
Net asset value per share............................          $6.47           $4.52         $9.57         $0.00              $4.52
                                                         ===========      ==========     =========     =========        ===========

Offering price per share (net asset value divided by
  95.25%)............................................          $6.79           $4.75        $10.05         $0.00              $4.75

Class "B" Shares
Capital shares outstanding...........................      1,404,036         522,448       138,869       777,024(A)       2,842,377
Net assets  .........................................   $  9,137,794     $ 2,355,592    $1,325,086            $0       $ 12,818,472
                                                         -----------      ----------     ---------     ---------        -----------
Net asset value per share............................          $6.51           $4.51         $9.54         $0.00              $4.51
                                                         ===========      ==========     =========     =========        ===========

<FN>
(A)  Reflects new shares issued, net of retired shares of Corporate Bond and Limited Maturity Series.
</FN>
</TABLE>
<PAGE>
<TABLE>
                                                      STATEMENTS OF OPERATIONS
                                                FOR THE YEAR ENDED DECEMBER 31, 1999
                                                             (UNAUDITED)


<CAPTION>
                                                                                          LIMITED                        COMBINED
                                                           CORPORATE     DIVERSIFIED      MATURITY      PRO FORMA       DIVERSIFIED
                                                          BOND SERIES   INCOME SERIES   BOND SERIES   ADJUSTMENTS(A)   INCOME SERIES
                                                          --------------------------------------------------------------------------
<S>                                                       <C>            <C>             <C>            <C>             <C>
INVESTMENT INCOME:
  Dividends............................................   $         0    $         0     $   8,287      $       0       $     8,287
  Interest.............................................     4,128,740      1,229,894       506,278              0         5,864,912
                                                           ----------     ----------      --------       --------        ----------
    Total investment income............................     4,128,740      1,229,894       514,565              0         5,873,199

EXPENSES:
  Management fees......................................       289,863         95,618        36,156       (126,491)          295,146
  Custodian fees.......................................         4,530          2,369         2,341            ---             9,240
  Transfer/maintenance fees............................       119,987         74,590         6,799            ---           201,376
  Administration fees..................................        52,175         17,211         6,508            ---            75,894
  Directors' fees......................................         5,434          1,804           668            ---             7,906
  Professional fees....................................         9,959          7,595         6,643        (17,447)            6,750
  Reports to shareholders..............................         6,699          3,072         1,135            ---            10,906
  Registration fees....................................        25,866         22,062        18,599        (41,527)           25,000
  Other expenses.......................................         3,069            645           329            ---             4,043
  12b-1 distribution plan fees.........................       206,771         83,250        28,376            ---           318,397
                                                           ----------     ----------      --------       --------        ----------
                                                              724,353        308,216       107,554       (185,465)          954,658
Less: Reimbursement of expenses........................       (30,967)       (96,445)      (37,027)       164,439               ---
                                                           ----------     ----------      --------       --------        ----------
      Total expenses...................................       693,386        211,771        70,527        (21,026)          954,658
                                                           ----------     ----------      --------       --------        ----------
      Net investment income............................     3,435,354      1,018,123       444,038         21,026         4,918,541

NET REALIZED AND UNREALIZED GAIN (LOSS):
Net realized gain (loss) during the period on
  investments..........................................      (415,756)      (585,644)      (19,107)             0        (1,020,507)
Net change in unrealized appreciation (depreciation)
  during the period on investments.....................    (5,315,075)    (1,172,192)     (561,159)             0        (7,048,426)
                                                           ----------     ----------      --------       --------        ----------
  Net gain (loss)......................................    (5,730,831)    (1,757,836)     (580,266)             0        (8,068,933)
                                                           ----------     ----------      --------       --------        ----------
    Net increase decreasing in net assets resulting
      from operations..................................   $(2,295,477)   $  (739,713)    $(136,228)     $  21,026       $(3,150,392)
                                                           ==========     ==========      ========       ========        ==========

<FN>
(a)  Reflects  estimated  reduction in expenses due to lower  management fee, larger net assets and greater  economies of scale, and
     assumes the Diversified Income Series' fee structure was in effect for the year ended December 31, 1999.
</FN>
</TABLE>
<PAGE>
                     NOTES TO PRO FORMA FINANCIAL STATEMENTS
                                   (UNAUDITED)


NOTE 1: BASIS OF COMBINATION - On February 4, 2000, the Board of Security Income
Fund  approved an Agreement  and Plan of  Reorganization  (the "Plan")  whereby,
subject to approval by the  shareholders  of  Corporate  Bond Series and Limited
Maturity Bond Series,  Diversified  Income Series will acquire all the assets of
the  Corporate  Bond Series and  Limited  Maturity  Bond  Series  subject to the
liabilities of such Series,  in exchange for a number of shares equal to the pro
rata net assets of shares of the Diversified Income Series (the "Merger").

The Merger will be accounted for as a tax-free  merger of investment  companies.
The pro forma combined financial statements are presented for the information of
the reader and may not necessarily be representative of what the actual combined
financial statements would have been had the reorganization occurred at December
31, 1999.  The unaudited  pro forma  portfolio of  investments  and statement of
assets and  liabilities  reflect the financial  position of the  Corporate  Bond
Series,  Limited  Maturity  Bond Series,  and the  Diversified  Income Series at
December 31, 1999. The unaudited pro forma statement of operations  reflects the
results of  operations  of the  Corporate  Bond Series,  Limited  Maturity  Bond
Series,  and the Diversified Income Series for the year ended December 31, 1999.
These statements have been derived from the Funds'  respective books and records
utilized in calculating  daily net asset value at the dates  indicated above for
Corporate Bond Series,  Limited  Maturity Bond Series,  and  Diversified  Income
Series under generally accepted  accounting  principles.  The historical cost of
investment  securities  will be  carried  forward  to the  surviving  entity and
results of operations of Diversified Income Series for  pre-combination  periods
will not be restated.

The pro forma  portfolio of investments and statements of assets and liabilities
and  operations  should be read in  conjunction  with the  historical  financial
statements  of  the  Funds  incorporated  by  reference  in  the  Statements  of
Additional Information.

NOTE 2: SECURITY  VALUATION - Valuations of Diversified  Income,  Corporate Bond
and Limited  Maturity Bond Series'  securities are supplied by pricing  services
approved by the Board of  Directors.  Securities  listed or traded on a national
securities  exchange are valued on the basis of the last sales  price.  If there
are no sales on a particular day, then the securities are valued at the last bid
price.  Securities  for which market  quotations  are not readily  available are
valued by a pricing service considering securities with similar yields, quality,
type of issue,  coupon,  duration and rating. If there is no bid price or if the
bid price is deemed to be  unsatisfactory  by the Board of  Directors  or by the
Funds' investment manager,  then the securities are valued in good faith by such
method as the Board of Directors  determines  will  reflect the fair value.  The
Funds'  officers,  under the  general  supervision  of the  Board of  Directors,
regularly  review  procedures  used by, and valuations  provided by, the pricing
service.

NOTE 3:  CAPITAL  SHARES - The pro  forma net  asset  value  per  share  assumes
additional  shares  of  common  stock  issued in  connection  with the  proposed
acquisition  of  Corporate  Bond  Series and  Limited  Maturity  Bond  Series by
Diversified  Income  Series as of December  31, 1999.  The number of  additional
shares  issued was  calculated  by dividing the net asset value of each Class of
Corporate Bond Series and Limited  Maturity Bond Series by the respective  Class
net asset value per share of Diversified Income Series.

NOTE 4: PRO FORMA ADJUSTMENTS - The accompanying pro forma financial  statements
reflect  changes in fund shares as if the merger had taken place on December 31,
1999.  Corporate  Bond Series and Limited  Maturity  Bond Series  expenses  were
adjusted assuming Diversified Income Series' fee structure was in effect for the
year ended December 31, 1999.

NOTE 5: COSTS OF REORGANIZATION - The costs of the  reorganization are estimated
at  approximately  $72,000 and are not  included in the pro forma  statement  of
operations  since  these  costs are  nonrecurring.  These  costs  represent  the
estimated  expense of all Series carrying out their  obligations  under the Plan
and consist of management's  estimate of legal fees,  accounting fees,  printing
costs and mailing charges related to the proposed merger.

It is the policy of the Funds,  to comply with the  requirements of the Internal
Revenue  Code that are  applicable  to  regulated  investment  companies  and to
distribute substantially all of their net investment income and any net realized
gains to their  shareholders.  Therefore,  a federal  income  tax or excise  tax
provision is not required.  In addition,  by  distributing  during each calendar
year  substantially  all of its net investment  income and net realized  capital
gains, each Fund intends not to be subject to any federal excise tax.

The  Board of  Directors  intends  to  offset  any net  capital  gains  with any
available  capital  loss  carryforward  until each  carryforward  has been fully
utilized or expires.  In addition,  no capital gain  distribution  shall be made
until the capital loss carryforward has been fully utilized or expires.

Corporate Bond Series,  Limited Maturity Bond Series, and the Diversified Income
Series  will  distribute  substantially  all  their  investment  income  and any
realized gains prior to the merger date.
<PAGE>
<TABLE>
                                                  PROFORMA SCHEDULE OF INVESTMENTS
                                                       AS OF DECEMBER 31, 1999
                                                             (UNAUDITED)


<CAPTION>
     PRINCIPAL AMOUNT OR NUMBER OF SHARES                                                           MARKET VALUE
- -----------------------------------------------                                -----------------------------------------------------
                                      COMBINED                                                                            COMBINED
CORPORATE   DIVERSIFIED   LIMITED    DIVERSIFIED                               CORPORATE    DIVERSIFIED      LIMITED     DIVERSIFIED
  BOND        INCOME      MATURITY     INCOME                                    BOND         INCOME         MATURITY      INCOME
 SERIES       SERIES      SERIES       SERIES                                    SERIES       SERIES          SERIES       SERIES
- ------------------------------------------------------------------------------------------------------------------------------------
<C>         <C>          <C>         <C>          <S>                          <C>          <C>          <C>             <C>
                                                  CORPORATE BONDS AND
                                                  MORTGAGE BACKED SECURITIES

                                                  AIRLINES - 2.8%
$1,075,000                           $1,075,000   Southwest Airlines
                                                    Company, 7.875% - 2007..    1,088,437                                 1,088,437
  $950,000                             $950,000   United Air Lines,
                                                    11.21% - 2014...........    1,126,938                                 1,126,938
                                                                               -----------------------------------------------------
                                                                                2,215,375            0               0    2,215,375

                                                  AUTOMOTIVE - 2.0%
  $250,000                 $25,000     $275,000   Federal-Mogul Corporation,
                                                    7.875% - 2010...........      228,437                       22,844      251,281
$1,000,000                $100,000   $1,100,000   General Motors
                                                    Corporation,
                                                    7.70% - 2016............      998,750                       99,875    1,098,625
  $250,000                 $25,000     $275,000   Mark IV Industries,
                                                    7.75% - 2006............      240,000                       22,688      262,688
                                                                               -----------------------------------------------------
                                                                                1,467,187            0         145,407    1,612,594

                                                  BANKING - 1.5%
                           $13,000      $13,000   B.F. Saul REIT,
                                                    9.75% - 2008............                                    12,269       12,269
                          $100,000     $100,000   Bank of New York, Inc.,
                                                    6.50% - 2003............                                    97,500       97,500
                          $110,000     $110,000   First Union Corporation,
                                                    8.125% - 2002...........                                   112,063      112,063
                           $25,000      $25,000   Golden State Holdings,
                                                    7.125% - 2005...........                                    22,656       22,656
$1,000,000                           $1,000,000   Washington Mutual
                                                    Capital I, 8.375% - 2027      936,250                                   936,250
                                                                               -----------------------------------------------------
                                                                                  936,250            0         244,488    1,180,738

                                                  BASIC INDUSTRY-OTHER-1.0%
  $800,000                $125,000     $925,000   Pioneer Hi Bred
                                                    International, Inc.,
                                                    5.75% - 2009............      713,000                      111,406      824,406

                                                  BEVERAGE - 1.6%
$1,150,000                $100,000   $1,250,000   Anheuser-Busch Companies,
                                                    Inc.,7.10% - 2007.......    1,115,500                       97,000    1,212,500
                          $100,000     $100,000   Pepsi Bottling Holdings,
                                                    Inc., 5.25% - 2009......                                    88,250       88,250
                                                                               -----------------------------------------------------
                                                                                1,115,500            0         185,250    1,300,750

                                                  BROKERAGE - 1.7%
   48,910                    4,560       53,470   SI Financing, Inc.,
                                                    9.50% - 2026............    1,247,205                      116,280    1,363,485

                                                  BUILDING MATERIALS - 2.5%
  $600,000                 $50,000     $650,000   LaFarge Corporation,
                                                    6.375% - 2005...........      562,500                       46,875      609,375
  $850,000                             $850,000   Martin Marietta Material,
                                                    5.875% - 2008...........      758,625                                   758,625
                           $25,000      $25,000   Nortek, Inc., 8.875%- 2008                                    23,750       23,750
  $500,000                $100,000     $600,000   Vulcan Materials Company,
                                                    5.75% - 2004............      476,250                       95,250      571,500
                                                                               -----------------------------------------------------
                                                                                1,797,375            0         165,875    1,963,250

                                                  CONSTRUCTION
                                                    MACHINERY - 0.8%
  $250,000                 $25,000     $275,000   AGCO Corporation,
                                                    8.50% - 2006............      232,812                       23,281      256,093
                           $25,000      $25,000   Columbus McKinnon
                                                    Corporation, 8.5% - 2006                                    21,563       21,563
  $150,000                 $25,000     $175,000   SEQUA Corporation,
                                                    9.00% - 2009............      145,688                       24,281      169,969
  $250,000                             $250,000   Titan Wheel International,
                                                    8.75% - 2007............      210,313                                   210,313
                                                                               -----------------------------------------------------
                                                                                  588,813            0          69,125      657,938

                                                  CONSUMER CYCLICAL -
                                                    OTHER - 0.0%
                           $25,000      $25,000   American ECO Corporation,
                                                    9.625% - 2008...........                                    12,938       12,938

                                                  ENERGY - OTHER - 0.0%
                           $25,000      $25,000   P & L Coal Holdings
                                                    Corporation,
                                                    8.875% - 2008...........                                    24,438       24,438

                                                  ENERGY - REFINING - 0.2%
                          $150,000     $150,000   Vastar Resources, Inc.,
                                                    8.75% - 2005............                                   156,750      156,750

                                                  ENTERTAINMENT - 1.1%
$1,000,000                           $1,000,000   Paramount Communications,
                                                    7.50% - 2023............      882,500                                   882,500

                                                  FINANCIAL COMPANIES - 6.3%
    23,000                   3,900       26,900   American RE Capital,
                                                    8.50% - 2025............      552,000                       93,600      645,600
  $875,000                $100,000     $975,000   Associates Corporation,
                                                    N.A., 7.55% - 2006......      873,906                       99,875      973,781
  $250,000                 $25,000     $275,000   CB Richard Ellis Service,
                                                    8.875% - 2006...........      225,625                       22,562      248,187
$1,000,000                           $1,000,000   Countrywide Capital,
                                                    8.00% - 2026............      891,250                                   891,250
                          $150,000     $150,000   Household Financial
                                                    Corporation, 8.0% - 2004                                   152,438      152,438
                          $150,000     $150,000   International Lease
                                                    Finance Corporation,
                                                    8.25% - 2000............                                   150,080      150,080
  $100,000                $100,000     $200,000   Merrill Lynch & Company,
                                                    Inc., 7.375% - 2006.....       99,250                       99,250      198,500
                                                  Morgan Stanley Dean Witter
$1,050,000                $100,000   $1,150,000     Discover & Company,
                                                    6.875% - 2007...........    1,014,563                       96,625    1,111,188
  $700,000                             $700,000   PNC Funding Corporation,
                                                    7.75% - 2004............      706,125                                   706,125
                                                                               -----------------------------------------------------
                                                                                4,362,719            0         714,430    5,077,149

                                                  FINANCE - OTHER - 0.1%
                          $100,000     $100,000   EOP Operating Limited
                                                    Partnership, REIT,
                                                    6.625% - 2005...........                                    94,875       94,875

                                                  FOOD - 1.8%
$1,000,000                $100,000   $1,100,000   Archer-Daniels-Midland
                                                    Company, 8.875% - 2011..    1,092,500                      109,250    1,201,750
                           $75,000      $75,000   Cargill Corporation,
                                                    6.15% - 2008............                                     68,250       68,250
  $250,000                             $250,000   Chiquita Brands
                                                    International, Inc.,
                                                    10.25% - 2006...........      180,625                                   180,625
                                                                               -----------------------------------------------------
                                                                                1,273,125            0         177,500    1,450,625

                                                  GAMING - 2.3%
  $250,000                 $25,000     $275,000   Boyd Gaming Corporation,
                                                    9.25% - 2003............      251,875                       25,187      277,062
                           $25,000      $25,000   Circus Circus Enterprise,
                                                    9.25% - 2005............                                    25,375       25,375
                           $25,000      $25,000   Harrahs Operating, Inc.,
                                                    7.875% - 2005...........                                    24,063       24,063
  $600,000                 $75,000     $675,000   MGM Grand Inc.,
                                                    6.95% - 2005............      552,750                       69,094      621,844
  $600,000                 $65,000     $665,000   Mirage Resorts Inc.,
                                                    6.625% - 2005...........      550,500                       59,638      610,138
  $250,000                 $25,000     $275,000   Park Place Entertainment,
                                                    7.875% - 2005...........      239,375                       23,937      263,312
                                                                               -----------------------------------------------------
                                                                                1,594,500          ---         227,294    1,821,794

                                                  HEALTHCARE - 0.2%
  $125,000                             $125,000   Rural/Metro Corporation,
                                                    7.875% - 2008...........       98,125                                    98,125
                           $25,000      $25,000   Tenet Healthcare,
                                                    8.125% - 2008...........                                    23,344       23,344
                                                                               -----------------------------------------------------
                                                                                   98,125          ---          23,344      121,469

                                                  HOME CONSTRUCTION - 0.5%
   $50,000                              $50,000   D.R. Horton, Inc.,
                                                    8.375% - 2004...........       48,875                                    48,875
  $125,000                 $12,000     $137,000   MDC Holdings, 8.375%- 2008      113,906                       10,935      124,841
  $250,000                             $250,000   Oakwood Homes Corporation,
                                                    8.125% - 2009...........      128,750                                   128,750
   $75,000                 $13,000      $88,000   Toll Corporation,
                                                    7.75% - 2007............       70,313                       12,187       82,500
                                                                               -----------------------------------------------------
                                                                                  361,844            0          23,122      384,966

                                                  INDEPENDENT ENERGY - 0.9%
  $700,000                 $50,000     $750,000   Seagull Energy
                                                    Corporation,
                                                    8.625% - 2005...........      700,875                       50,062      750,937

                                                  INSURANCE - LIFE - 1.6%
  $100,000                $100,000     $200,000   Chubb Corporation,
                                                    6.15% - 2005............       94,500                       94,500      189,000
  $950,000                $100,000   $1,050,000   Hartford Life, Inc.,
                                                    7.10% - 2007............      914,375                       96,250    1,010,625
  $100,000                             $100,000   Transamerica Capital II,
                                                    7.65% - 2026............       91,250                                    91,250
                                                                               -----------------------------------------------------
                                                                                1,100,125            0         190,750    1,290,875

                                                  LODGING - 0.6%
  $250,000                 $25,000     $275,000   HMH Properties,
                                                    7.875% - 2008...........      223,125                       22,312      245,437
  $250,000                             $250,000   Prime Hospitality
                                                    Corporation, 9.25%- 2006     249,375                                    249,375
                                                                               -----------------------------------------------------
                                                                                  472,500            0          22,312      494,812

                                                  MEDIA - CABLE - 2.0%
                           $25,000      $25,000   Adelphia Communications,
                                                    8.375% - 2008...........                                    23,250       23,250
  $250,000                 $25,000     $275,000   Century Communications,
                                                    8.375% - 2007...........      236,875                       23,688      260,563
  $100,000                             $100,000   Comcast Corporation,
                                                    9.125% - 2006...........      104,125                                   104,125
  $250,000                 $25,000     $275,000   Jones Intercable, Inc.,
                                                    7.625% - 2008...........      248,125                       24,812      272,937
  $250,000                             $250,000   Lenfest Communications,
                                                    Inc., 10.50% - 2006.....      280,625                                   280,625
  $250,000                             $250,000   Rogers Cablesystems, Ltd.,
                                                    9.625% - 2002...........      259,375                                   259,375
  $250,000                 $25,000     $275,000   Rogers Communications,
                                                    Inc., 9.125% - 2006.....      250,625                       25,062      275,687
   $60,000                 $50,000     $110,000   Time Warner Entertainment,
                                                    10.15% - 2012...........       70,350                       58,625      128,975
                                                                               -----------------------------------------------------
                                                                                1,450,100            0         155,437    1,605,537

                                                  MEDIA - NON-CABLE - 0.7%
                          $100,000     $100,000   Heritage Media
                                                    Corporation,
                                                    8.75% - 2006............                                   101,875      101,875
  $300,000                 $75,000     $375,000   KIII Communications
                                                    Corporation,
                                                    10.25% - 2004...........      296,625                       74,156      370,781
   $75,000                              $75,000   News American Holdings,
                                                    8.625% - 2003...........       77,437                                    77,437
                           $25,000      $25,000   USA Networks, 6.75% - 2005                                    23,844       23,844
                                                                               -----------------------------------------------------
                                                                                  374,062            0         199,875      573,937

                                                  METALS - 0.1%
                           $25,000      $25,000   AK Steel Corporation,
                                                    7.875% - 2009...........                                    23,750       23,750
                           $25,000      $25,000   California Steel
                                                    Industries, 8.50% - 2009                                    24,188       24,188
                           $25,000      $25,000   WHX Corporation,
                                                    10.50% - 2005...........                                    24,437       24,437
                                                                               -----------------------------------------------------
                                                                                        0            0          72,375       72,375

                                                  MORTGAGE BACKED
                                                    SECURITIES - 2.1%
                                                  Chase Capital Mortgage
                                                    Securities Company,
$1,500,000                           $1,500,000     1997-1 B, 7.37% - 2007
                                                    CMO.....................    1,473,945                                 1,473,945
                                                  Chase Capital Mortgage
                                                    Securities Company,
  $225,000                             $225,000     1998-1 B, 6.56% - 2008
                                                    CMO.....................      210,892                                   210,892
                           $44,343      $44,343   Global Rated Eligible
                                                    Asset Trust,
                                                    7.33% - 2006............                                     9,755        9,755
                                                                               -----------------------------------------------------
                                                                                1,684,837          ---           9,755    1,694,592

                                                  OIL FIELD SERVICES - 1.2%
$1,000,000                           $1,000,000   Transocean Offshore, Inc.,
                                                    8.00% - 2027............      981,250                                   981,250

                                                  PACKAGING - 0.0%
                           $25,000      $25,000   Ball Corporation,
                                                    7.75% - 2006............                                    24,437       24,437

                                                  RETAILERS - 2.7%
  $850,000                $100,000     $950,000   Lowe's Companies, Inc.,
                                                    6.70% - 2007............      811,750                       95,500      907,250
  $300,000                             $300,000   Mattel, Inc., 6.125%- 2005      274,125                                   274,125
                          $150,000     $150,000   Sears & Roebuck Company,
                                                    6.41% - 2001............                                   148,125      148,125
  $450,000                $100,000     $550,000   Tandy Corporation,
                                                    6.95% - 2007............      430,875                       95,750      526,625
  $250,000                $100,000     $350,000   Zale Corporation,
                                                    8.50% - 2007............      247,813                       99,125      346,938
                                                                               -----------------------------------------------------
                                                                                1,764,563            0         438,500    2,203,063

                                                  SERVICES - 0.7%
  $550,000                 $50,000     $600,000   Loewen Group
                                                    International,
                                                    Inc.,  8.25% - 2003*....      288,750                       26,250      315,000
                           $25,000      $25,000   Protection One Alarm,
                                                    7.375% - 2005...........                                    19,875       19,875
  $250,000                             $250,000   Unisys Corporation,
                                                    7.875% - 2008...........      240,625                                   240,625
                                                                               -----------------------------------------------------
                                                                                  529,375            0          46,125      575,500

                                                  SUPERMARKETS - 0.1%
                          $100,000     $100,000   Safeway, Inc., 6.50%- 2008                                    92,125       92,125

                                                  TECHNOLOGY - 0.6%
  $500,000                             $500,000   Electronic Data Systems,
                                                    7.125% - 2009...........      488,125                                   488,125

                                                  TELECOMMUNICATIONS - 3.3%
  $100,000                $100,000     $200,000   AT&T Corporation,
                                                    7.00% - 2005............       98,125                       98,125      196,250
                           $25,000      $25,000   ALESTRA S.A.,
                                                    12.625% - 2009..........                                    25,094       25,094
  $250,000                 $50,000     $300,000   Cable & Wireless
                                                    Communications,
                                                    6.75% - 2008............      247,500                       49,500      297,000
$1,000,000                           $1,000,000   GTE Corporation,
                                                    7.51% - 2009............      998,750                                   998,750
  $250,000                 $25,000     $275,000   Mastec, Inc., 7.75% - 2008      243,125                       24,312      267,437
   $50,000                $100,000     $150,000   New Jersey Bell Telephone,
                                                    6.625% - 2008...........       46,687                       93,375      140,062
  $675,000                $100,000     $775,000   SBC Communications
                                                    Capital Corporation,
                                                    6.625% - 2007...........      648,000                       96,000      744,000
                                                                               -----------------------------------------------------
                                                                                2,282,187            0         386,406    2,668,593

                                                  TEXTILES - 0.0%
                           $25,000      $25,000   Westpoint Stevens, Inc.,
                                                    7.875% - 2008...........                                    22,437       22,437

                                                  TOBACCO - 0.1%
                           $50,000      $50,000   Dimon, Inc., 8.875% - 2006                                    44,625       44,625
                           $50,000      $50,000   Standard Commercial
                                                    Tobacco Corporation,
                                                    8.875% - 2005...........                                    40,625       40,625
                                                                               -----------------------------------------------------
                                                                                        0            0          85,250       85,250

                                                  TRANSPORTATION -
                                                    AIRLINES - 0.2%
                          $100,000     $100,000   Southwest Airlines
                                                    Company, 7.875% - 2007..                                   101,250      101,250
                           $75,000      $75,000   United Airlines,
                                                    11.21% - 2014...........                                    88,969       88,969
                                                                               -----------------------------------------------------
                                                                                        0            0         190,219      190,219

                                                  TRANSPORTATION-OTHER- 0.3%
  $250,000                 $25,000     $275,000   Allied Holdings, Inc.,
                                                    8.625% - 2007...........      221,875                       22,187      244,062

                                                  UTILITIES-ELECTRIC - 0.9%
  $500,000                             $500,000   AES Corporation,
                                                    10.25% - 2006...........      505,000                                   505,000
                           $25,000      $25,000   CMS Energy Corporation,
                                                    6.75% - 2004............                                    23,187       23,187
                           $25,000      $25,000   Calpine Corporation,
                                                    8.75% - 2007............                                    25,094       25,094
                          $150,000     $150,000   Consolidated Edison
                                                    Company, 6.625% - 2002..                                   148,500      148,500
                                                                               -----------------------------------------------------
                                                                                  505,000            0         196,781      701,781

                                                  UTILITIES-NATURAL GAS-1.4%
   $75,000                $150,000     $225,000   MCN Investment
                                                    Corporation,
                                                    6.32% - 2003............       72,281                      144,563      216,844
$1,000,000                           $1,000,000   National Fuel Gas Company,
                                                    6.303% - 2008...........      901,250                                   901,250
                                                                               -----------------------------------------------------
                                                                                  973,531            0         144,563    1,118,094

                                                  YANKEE - CANADIAN - 1.4%
$1,100,000                $100,000    1,200,000   Quebecor Printing Capital,
                                                    7.25% - 2007............    1,027,125                       93,375    1,120,500

                                                  YANKEE - CORPORATE - 5.6%
$1,150,000                           $1,150,000   Abbey National PLC,
                                                    6.69% - 2005............    1,102,563                                 1,102,563
$1,000,000                $100,000   $1,100,000   ABN AMRO Bank NV,
                                                    7.55% - 2006............      995,000                       99,500    1,094,500
$1,000,000                           $1,000,000   BCH Cayman Islands, Ltd.,
                                                    7.70% - 2006............      996,250                                   996,250
                          $100,000     $100,000   Den Danske Bank,
                                                    7.40% - 2010............                                    96,250       96,250
$1,200,000                $100,000   $1,300,000   Panamerican Beverages,
                                                    Inc., 8.125% - 2003.....    1,146,000                       95,500    1,241,500
                                                                               -----------------------------------------------------
                                                                                4,239,813          ---         291,250    4,531,063
                                                                               -----------------------------------------------------
                                                  TOTAL CORPORATE BONDS AND
                                                  MORTGAGE BACKED - 52.9%...   37,448,861          ---       5,226,743   42,675,604

                                                  GOVERNMENT AGENCIES AND
                                                  GOVERNMENT SECURITIES

                                                  FEDERAL HOME LOAN
                                                    BANK - 1.2%
  $800,000                             $800,000   6.375% - 2006.............      773,792                                   773,792
              $150,000                 $150,000   8.29% - 2015..............                   165,001                      165,001
                                                                               -----------------------------------------------------
                                                                                  773,792      165,001             ---      938,793

                                                  FEDERAL HOME LOAN MORTGAGE
                                                    CORPORATION - 5.2%
                           $57,524      $57,524   FHG #42 K, 8.00%- 2024 CMO                                    57,955       57,955
$1,050,000                $100,000   $1,150,000   FHR 1311 J, 7.50% - 2021
                                                    CMO.....................    1,037,085                       98,770    1,135,855
  $235,958                 $17,350     $253,308   FHR 1930 AB, 7.50% - 2023
                                                    CMO.....................      237,270                       17,446      254,716
$1,000,000    $400,000               $1,400,000   FHLMC, 6.25% - 2004.......      977,500      391,000                    1,368,500
            $1,000,000               $1,000,000   FHLMC, 6.625% - 2009......                   971,250                      971,250
                          $150,000     $150,000   Freddie Mac, 5.75% - 2003.                                   145,304      145,304
                          $250,000     $250,000   Federal Home Loan
                                                    Mortgage, 6.25% - 2004..                                   244,375      244,375
                                                                               -----------------------------------------------------
                                                                                2,251,855    1,362,250         563,850    4,177,955

                                                  FEDERAL NATIONAL MORTGAGE
                                                    ASSOCIATION - 9.6%
  $543,254                             $543,254   FNR 1990-108 G,
                                                    7.00% - 2020 CMO........      525,403                                   525,403
                          $100,000     $100,000   FNMA, 5.45% - 2003........                                    95,571       95,571
$1,000,000  $1,000,000    $250,000   $2,250,000   FNMA, 6.50% - 2004........      987,790      987,790         246,948    2,222,528
              $600,000                 $600,000   FNMA, 7.40% - 2004........                   613,272                      613,272
              $285,000                 $285,000   FNMA, 7.49% - 2005........                   292,649                      292,649
              $250,000                 $250,000   FNMA, 7.65% - 2005........                   258,452                      258,452
              $500,000                 $500,000   FNMA, 7.875% - 2005.......                   521,590                      521,590
              $400,000                 $400,000   FNMA, 6.00% - 2008........                   374,468                      374,468
$1,500,000                           $1,500,000   FNMA, 6.375% - 2009.......    1,431,915                                 1,431,915
$1,000,000                           $1,000,000   FNMA, 6.625% - 2009.......      972,500                                   972,500
              $500,000                 $500,000   FNMA, 6.16% - 2028........                   437,830                      437,830
                                                                               -----------------------------------------------------
                                                                                3,917,608    3,486,051         342,519    7,746,178

                                                  FINANCING CORPORATION-0.8%
              $500,000                 $500,000   9.65% - 2018..............                   615,000                      615,000

                                                  GOVERNMENT NATIONAL
                                                    MORTGAGE ASSOCIATION -
                                                    18.1%
  $736,096                             $736,096   GNMA 313107, 7.00% - 2022.      721,204                                   721,204
              $213,217                 $213,217   GNMA 328618, 7.00% - 2022.                   208,169                      208,169
              $151,159                 $151,159   GNMA II 1260, 7.00% - 2023                   147,249                      147,249
  $679,459                             $679,459   GNMA 352022, 7.00% - 2023.      656,099                                   656,099
  $652,089                 $65,209     $717,298   GNMA 369303, 7.00% - 2023.      638,115                       63,811      701,926
              $373,299                 $373,299   GNMA 347017, 7.00% - 2024.                   363,858                      363,858
              $205,649                 $205,649   GNMA 371006, 7.00% - 2024.                   200,897                      200,897
              $371,619                 $371,619   GNMA 371012, 7.00% - 2024.                   362,488                      362,488
              $158,892                 $158,892   GNMA II 1849, 8.50% - 2024                   163,076                      163,076
              $242,884                 $242,884   GNMA 411643, 7.75% - 2025.                   242,797                      242,797
              $681,941     $85,243     $767,184   GNMA 780454, 7.00% - 2026.                   658,925          82,366      741,291
              $328,171                 $328,171   GNMA 2320, 7.00% - 2026...                   318,365                      318,365
              $267,345                 $267,345   GNMA II 2270, 8.00% - 2026                   267,968                      267,968
              $149,549                 $149,549   GNMA II 9365, 8.25% - 2026                   152,410                      152,410
              $380,246                 $380,246   GNMA 2689, 6.50% - 2028...                   356,153                      356,153
              $754,216                 $754,216   GNMA 464356, 6.50% - 2028.                   708,647                      708,647
  $866,352     $86,635                 $952,987   GNMA 462680, 7.00%- 2028..      839,218       83,922                      923,140
$1,057,200                $154,175   $1,211,375   GNMA 482668, 7.00% - 2028.    1,023,739                      149,295    1,173,034
              $476,820                 $476,820   GNMA 2616, 7.00% - 2028...                   460,465                      460,465
  $997,508                             $997,508   GNMA 518436, 7.25% - 2029.      974,784                                   974,784
              $989,755                 $989,755   GNMA 491492, 7.50% - 2029.                   978,689                      978,689
$1,545,686                           $1,545,686   GNMA 494109, 7.50% - 2029.    1,528,328                                 1,528,328
  $997,758    $299,328     $99,776   $1,396,862   GNMA 510704, 7.50% - 2029.      986,544      295,963          98,654    1,381,161
  $257,588                 $61,821     $319,409   GNMA II 2445, 8.00% - 2027      258,194                       61,967      320,161
              $515,070                 $515,070   GNMA 365608, 7.50% - 2034.                   509,842                      509,842
   $21,744                              $21,744   GNR 1997-10 B, 7.50%- 2019
                                                    CMO.....................       21,696                                    21,696
                                                                               -----------------------------------------------------
                                                                                7,647,921    6,479,883         456,093   14,583,897

                                                  PRIVATE EXPORT FUNDING
                                                    CORPORATION - 0.5%
              $100,000                 $100,000   6.31% - 2004..............                    97,250                       97,250
              $350,000                 $350,000   7.01% - 2004..............                   350,000                      350,000
                                                                               -----------------------------------------------------
                                                                                      ---      447,250             ---      447,250

                                                  STUDENT LOAN MARKETING
                                                    ASSOCIATION - 0.6%
              $420,000                 $420,000   9.25% - 2004..............                   457,729                      457,729

                                                  TENNESSEE VALLEY
                                                    AUTHORITY - 1.1%
              $500,000                 $500,000   6.00% - 2013..............                   448,750                      448,750
              $500,000                 $500,000   6.75% - 2025..............                   470,000                      470,000
                                                                               -----------------------------------------------------
                                                                                      ---      918,750             ---      918,750

                                                  U.S. TREASURY BOND - 2.4%
$1,000,000                           $1,000,000   6.25% - 2023..............      942,890                                   942,890
$1,000,000                           $1,000,000   6.625% - 2027.............      991,180                                   991,180
                                                                               -----------------------------------------------------
                                                                                1,934,070          ---             ---    1,934,070

                                                  U.S. TREASURY NOTES - 4.1%
$1,700,000                           $1,700,000   5.75% - 2003..............    1,668,686                                 1,668,686
$1,000,000                           $1,000,000   6.50% - 2005..............    1,000,160                                 1,000,160
              $600,000                 $600,000   8.75% - 2008..............                   642,036                      642,036
                                                                               -----------------------------------------------------
                                                                                2,668,846      642,036             ---    3,310,882

                                                  U.S. DEPARTMENT OF
                                                    HOUSING AND URBAN
                                                    DEVELOPMENT - 1.6%
$1,290,000                 $50,000   $1,340,000   6.93%- 2013...............    1,215,893                       47,128    1,263,021

                                                  CANADIAN GOVERNMENT
                                                    SECURITIES - 0.2%
                          $150,000     $150,000   Province of Quebec,
                                                    8.625% - 2005...........                                   158,250      158,250
                                                                               -----------------------------------------------------

                                                  TOTAL GOVERNMENT
                                                  SECURITIES - 45.4%........   20,409,985   14,573,950       1,567,840   36,551,775

                                                  TOTAL INVESTMENTS - 98.3%.   57,858,846   14,573,950       6,794,583   79,227,379
                                                  CASH AND OTHER ASSETS,
                                                    LESS LIABILITIES - 1.7%.      755,585      504,236         100,729    1,360,550
                                                                               -----------------------------------------------------
                                                  TOTAL NET ASSETS - 100.0%.   58,614,431   15,078,186       6,895,312   80,587,929
                                                                               =====================================================
</TABLE>
<PAGE>
                               PROFORMA FEE TABLE


<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------
                                                                         TOTAL
                                                                      ANNUAL FUND                     NET
                               MANAGEMENT   DISTRIBUTION    OTHER      OPERATING    REIMBURSMENT/   EXPENSE
                                  FEES      (12B-1) FEES   EXPENSES    EXPENSES        WAIVERS       RATIO
- -----------------------------------------------------------------------------------------------------------
<S>                               <C>           <C>         <C>          <C>            <C>          <C>
1999 ACTUAL CLASS A
  Corporate Bond                  0.50%         0.25%       0.35%        1.10%          0.01%        1.09%
  Limited Maturity                0.50%         0.25%       0.52%        1.27%          0.50%        0.77%
  Diversified Income              0.50%         0.25%       0.62%        1.37%          0.50%        0.87%

1999 ACTUAL CLASS B
  Corporate Bond                  0.50%         1.00%       0.65%        2.15%          0.30%        1.85%
  Limited Maturity                0.50%         1.00%       0.91%        2.41%          0.56%        1.85%
  Diversified Income              0.50%         1.00%       0.86%        2.36%          0.51%        1.85%

PROFORMA-CLASS A
  Diversified Income(1)           0.35%         0.25%       0.40%        1.00%          0.00%        1.00%
  Corporate Bond (only)(2)        0.35%         0.25%       0.42%        1.02%          ---          1.02%
  Limited Maturity (only)(3)      0.35%         0.25%       0.57%        1.17%          0.07%        1.10%

PROFORMA-CLASS B
  Diversified Income(1)           0.35%         1.00%       0.40%        1.75%          0.00%        1.75%
  Corporate Bond (only)(2)        0.35%         1.00%       0.42%        1.77%          0.00%        1.77%
  Limited Maturity (only)(3)      0.35%         1.00%       0.57%        1.92%          0.07%        1.85%
- -----------------------------------------------------------------------------------------------------------
<FN>
(1)  Pro  forma fee  table  assuming  reorganization  of  Corporate  Bond and  Limited  Maturity  Bond into
     Diversified Income Fund.
(2)  Pro forma fee table assuming reorganization of only Corporate Bond into Diversified Income Fund.
(3)  Pro forma fee table assuming  reorganization  of only Limited  Maturity Bond into  Diversified  Income
     Fund.
</FN>
- -----------------------------------------------------------------------------------------------------------
</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission