CONSECO SERIES TRUST
497, 1999-12-28
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Conseco Series Trust
11825 N. Pennsylvania Street
Carmel, Indiana 46032
317/817-6300


December 28, 1999


EDGAR FILING

U.S. Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549

Re:      Conseco Series Trust
         --High Yield Portfolio
         --Conseco 20 Focus Portfolio
         1933 Act File No. 2-80455
         1940 Act File No. 811-3641

Dear Sir or Madam:

Transmitted herewith for filing pursuant to Rule 497(c) under the Securities Act
of 1933,  as amended,  and  Regulation C  thereunder  is the  prospectus  of the
above-named  series of Conseco  Trust. A  certification  pursuant to Rule 497(j)
under the 1933 Act is being filed with respect to the  statement  of  additional
information of these series.

Please  contact Shagor K. Chatterji or Donald W. Smith of Kirkpatrick & Lockhart
LLP,  at  (202)  778-9296  and  (202)  778-9079,  respectively,  if you have any
questions about this filing.


Sincerely,


/s/ William P. Kovacs
- ---------------------
William P. Kovacs
Vice President & Secretary

Enclosures

<PAGE>


CONSECO SERIES TRUST PROSPECTUS



DECEMBER 22, 1999


HIGH YIELD PORTFOLIO
CONSECO 20 FOCUS PORTFOLIO


As with any mutual fund, the Securities  and Exchange  Commission  (SEC) has not
approved  or  disapproved  of  these  securities  or  determined   whether  this
prospectus  is accurate or  complete.  Any  representation  to the contrary is a
criminal offense.


<PAGE>

                                                                               2

TABLE OF CONTENTS


The Portfolios

         General Information About the Portfolios. . . . . .  . . . . . . . . 3

         High Yield Portfolio. . . . . . . . . . . . . . . .  . . . . . . . . 4

         Conseco 20 Focus Portfolio . . . . . . . . . . . . .. . . . . . . .  7

Primary  Risk Considerations. . . . . . . . . . . . . . . . . . . . . . . . . 9

Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Your Account. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

         Purchase and Redemption of Shares. . . . . . . . . . . . . . . . . .12

         Dividends and Distributions. . . . . . . . . . . . . . . . . . . . .13

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14


<PAGE>

                                                                               3

                                     (Intro)

THE ADVISER'S INTEGRATED APPROACH TO MONEY MANAGEMENT

We believe that  combining the knowledge and experience of both fixed income and
equity analysts leads to better security selection over time.

Whether selecting  fixed income or  equity  securities, our  analysts  look  for
companies with:
  o Proven management teams
  o Leading edge products
  o Dominant market share positions

They then conduct a rigorous financial analysis of these companies,  focusing on
such indicators as:
  o Cost of capital
  o Financial strength
  o Spending plans

This  analysis is used to select  those  securities  deemed by the Adviser to be
most appropriate for each Portfolio's investment objective.

Each of the  Portfolios  may invest in  restricted  securities,  such as private
placements,  which are not registered with the Securities  Exchange  Commission.
Restricted  securities are generally illiquid;  however,  the Adviser focuses on
those that are liquid and may not invest in any  restricted  security that would
cause more than 15 percent of the  Portfolio's  total  assets to be  invested in
illiquid  securities.  The Portfolios also may invest in securities that qualify
to be sold directly to institutional  investors  pursuant to Rule 144A under the
Securities Act of 1933.

Because of the Adviser's active management style, our Portfolios  generally have
a higher portfolio turnover rate than other portfolios and, therefore,  may have
higher  taxable  distributions  and  increased  trading  costs  which may impact
performance.

There  is no  assurance  that  the  Portfolios  will  achieve  their  investment
objectives.   The  Portfolios  have  the  ability  to  change  their  investment
objectives without shareholder  approval,  although they do not currently intend
to do so.  In  addition,  the value of your  investment  in any  Portfolio  will
fluctuate, which means that you may lose money.


                                    (Sidebar)

A WORD ABOUT THE ADVISER

Conseco Capital  Management,  Inc. (CCM), or the "Adviser,"  provides investment
advice and management to each Portfolio.  CCM manages more than $41.0 billion in
assets for an array of  foundations,  endowments,  corporations,  government and
union clients (as of 6/30/99).

Please  note:  Definitions  for  bold-faced  words  within the text can be found
directly following each Portfolio's Primary Risk Considerations.


<PAGE>

                                                                               4

HIGH YIELD PORTFOLIO

INVESTMENT OBJECTIVE

The  Portfolio  seeks to provide  high level of current  income with a secondary
objective of capital appreciation.

ADVISER'S STRATEGY

Normally,  the Adviser invests at least 65% of the  Portfolio's  assets in BELOW
INVESTMENT GRADE SECURITIES (those rated BB+/Ba1 or lower by independent  rating
agencies).

Adhering to a strict buy/sell  discipline, the  Adviser seeks  to enhance  total
return by:
  o Purchasing securities it believes are undervalued
  o Selling securities it believes are overvalued or fully priced

To select securities, the Adviser utilizes:
  o Independent FUNDAMENTAL ANALYSIS to evaluate the issuer of a security
  o An analysis of the specific structure of the security

In an effort to achieve its  investment  objective,  the Portfolio may invest in
any or all of the following:
  o Corporate debt  securities and PREFERRED STOCK
  o ZERO COUPON BONDS and other deferred interest securities
  o Mortgage-backed securities
  o Asset-backed securities
  o Convertible securities
  o RESTRICTED SECURITIES
  o Taxable MUNICIPAL SECURITIES issued by states and their political
    subdivisions

The Portfolio may also invest in:
  o Cash or cash equivalents
  o Money market instruments
  o Securities issued or guaranteed by the U.S.  government, its  agencies, and
    instrumentalities

In addition, the Portfolio may invest in the following:
  o Common stocks and other equity securities
  o Equity and debt securities of foreign issuers, including issuers in emerging
     markets

BELOW INVESTMENT GRADE SECURITIES
These  securities offer higher return potential in exchange for assuming greater
risk. Normally,  they are rated BB+ or lower by Standard & Poor's Corporation or
Ba1 or lower by Moody's Investors Services,  Inc. or, if unrated,  deemed by the
Adviser to be comparable credit.

       [sidebar]

       For  defensive  purposes  or  pending   investment,   the  Portfolio  may
       temporarily  depart from its  objective  and hold an unlimited  amount of
       cash or money market  instruments.  This could help the  Portfolio  avoid
       losses, but may mean lost opportunities.

<PAGE>

                                                                               5

FUNDAMENTAL ANALYSIS
A  research   technique   that  looks  at  a  company's   financial   condition,
creditworthiness,  management,  and  place  in its  industry  to  determine  the
intrinsic value of the company's securities.

PREFERRED STOCK
Shares of a company  that  ordinarily  do not have  voting  rights but do have a
stated dividend  payment,  as opposed to common stocks which  ordinarily do have
voting rights but do not have a stated dividend payment.

ZERO COUPON BONDS
Bonds  that are sold at a deep  discount  and do not pay  periodic  interest  to
investors;  instead,  investors receive, at maturity, the difference between the
discounted price and the maturity value of the bond.

RESTRICTED SECURITIES
Securities that are not registered with the Securities and Exchange  Commission,
some of  which  may  qualify  to be sold  directly  to  institutional  investors
pursuant to Rule 144A under the  Securities Act of 1933.  Restricted  securities
are generally illiquid;  however,  the Adviser focuses on those that are liquid,
i.e., easily convertible into cash.

MUNICIPAL SECURITIES
Bonds and other  debt  obligations  issued by state and local  governments.  The
interest on the municipal securities in which the Portfolio invests typically is
NOT exempt from federal income tax.

                                    [sidebar]

PRIMARY RISKS:

Credit Risk

Interest Rate Risk

Market Risk

Restricted
Securities Risk

Prepayment Risk

Foreign Risk


See "Primary Risk  Considerations"  on page 00 for a detailed  discussion of the
Portfolio's risks.


<PAGE>

                                                                               6

HOW HAS THE PORTFOLIO PERFORMED?

High Yield Portfolio

Because the High Yield  Portfolio was new when this  prospectus was printed,  it
has no previous operating history.


<PAGE>

                                                                               7

CONSECO 20 FOCUS FUND

INVESTMENT OBJECTIVE

The Portfolio seeks capital appreciation.

ADVISER'S STRATEGY

Normally,  the Portfolio will invest at least 65% of its assets in common stocks
of companies that the Adviser believes have above-average growth prospects.

The Portfolio is NON-DIVERSIFIED  and will normally  concentrate its investments
in a core position of approximately 20 to 30 common stocks.  While the Portfolio
invests in securities issued by large-cap  companies,  a substantial  portion of
these securities may be issued by SMALL- AND MID-CAP COMPANIES.

The Adviser  looks for  companies  that  demonstrate  strong  growth  potential,
preferring:
  o Companies whose earnings appear likely to continue in an upward direction
  o Companies that  demonstrate the ability to consistently  grow their earnings
    at a faster rate than their peer group o Companies  whose  stocks  appear to
    the Adviser to be undervalued in the marketplace

In selecting equity  securities,  the Adviser considers the following factors: o
High return on invested capital o Sound financial  policies and a strong balance
sheet o Competitive  advantages  (including  innovative products and services) o
Effective  research,   product  development  and  marketing  o  Stable,  capable
management

The Adviser may also invest in any or all of the following:
  o PREFERRED STOCK
  o CONVERTIBLE SECURITIES
  o WARRANTS
  o Fixed Income  Securities (when the Adviser believes they are more attractive
    than stocks on a long-term basis)

NON-DIVERSIFIED
A Portfolio is considered non-diversified if it is not limited by the percentage
of assets it may invest in any one issuer.  The success or failure of one issuer
will cause the Portfolio to fluctuate more than it would in a diversified fund.

SMALL- AND MID-CAP COMPANIES
Generally   refers  to  companies   in  the  earlier   period  of  their  growth
expectations,  from start-ups to better established firms. While these companies
have potential for attractive  long-term  returns,  their securities may involve
greater risks, and more volatility,  then investments in larger companies with a
stronger  competitive  advantage.  The Adviser's  extensive research efforts can
play a greater  role in selecting  securities  form this sector then from larger
companies.

       [sidebar]

<PAGE>

                                                                               8

       If the  Adviser  believes  that  market  conditions  warrant a  defensive
       position,  the  Portfolio  may  temporarily  depart  from its  investment
       objective  and invest  without  limitation  in cash and  short-term  debt
       securities.  This could help the Portfolio avoid losses but may mean lost
       opportunities.

PREFERRED STOCK
See page 00.

CONVERTIBLE SECURITIES
Bonds,  debentures,  notes or preferred stock that are  convertible  into common
stock.  Convertible securities have some unique return characteristics  relative
to market fluctuations:
  o When equity markets go up, they tend to rise in price
  o When equity markets decline,  they tend to decline  relatively less in price
    than stocks  Convertible  securities  have both an equity and a fixed income
    component. Therefore,
  o While the  equity  component  is  subject  to  fluctuations  in value due to
    activities  of the  issuing  companies,  and  general  market  and  economic
    conditions;
  o The fixed income  component will be impacted by shifting  interest rates and
    changes in credit quality of the issuers.

WARRANTS
Contracts  that allow the bearer to purchase  shares for a specified  price at a
future date.

PRIMARY RISKS

Concentration Risk

Market Risk

Small Company Risk

Liquidity and
Valuation Risk

Foreign Risk

See "Primary Risk  Considerations"  on page 00 for a detailed  discussion of the
Portfolio's risks.


HOW HAS THE PORTFOLIO PERFORMED?

Conseco 20 Focus Portfolio

Because the Conseco 20 Focus Portfolio was new when this prospectus was printed,
it has no previous operating history.

<PAGE>

                                                                               9

PRIMARY  RISK CONSIDERATIONS

     The value of your investment in any Portfolio will  fluctuate,  which means
that you may lose money.  The primary risks of investing in the  Portfolios  are
described  below.  Each  Portfolio's  exposure to risk depends upon its specific
investment profile.
The amount and types of risk vary depending on:

  o The Portfolio's investment objective
  o The Portfolio's ability to achieve its objective
  o The markets in which the Portfolio invests
  o The investments the Portfolio makes in those markets
  o Prevailing economic conditions over the period of an investment

CONCENTRATION RISK
The risk that if a Portfolio has most of its  investments in a few securities or
a single  sector,  its portfolio will be more  susceptible to factors  adversely
affecting issuers within that sector than would a more diversified  portfolio of
securities.

CREDIT RISK
The risk that the issuer of a security, or the counterparty to a contract,  will
default or otherwise be unable to honor a financial obligation. Below investment
grade securities are especially susceptible to this risk.

FOREIGN RISK
The risk that foreign  issuers may be subject to foreign  political and economic
instability,  the  imposition  or  tightening  of  exchange  controls  or  other
limitations  on  repatriation  of foreign  capital.  In  addition,  there may be
changes in foreign governmental  attitudes towards private investment,  possibly
leading to  nationalization,  increased  taxation or  confiscation of investors'
assets.  Investments  in  issuers  located  or doing  business  in  emerging  or
developing markets are especially susceptible to these risks.

INTEREST RATE RISK
The risk that  changing  interest  rates may  adversely  affect  the value of an
investment.  With  fixed  income  securities,  an  increase  in  interest  rates
typically  causes  the value of those  securities  to fall,  while a decline  in
interest rates may produce an increase in the market value of those  securities.
Because of this risk, an investment in a Portfolio  that invests in fixed income
securities  is subject to risk even if all the fixed  income  securities  in the
Portfolio's  portfolio are paid in full at maturity.  Changes in interest  rates
will  affect  the  value  of  longer-term  fixed  income  securities  more  than
shorter-term securities.

LIQUIDITY AND VALUATION RISKS
The risk that  securities  that were liquid when  purchased  by a Portfolio  may
become  temporarily  illiquid  (i.e.,  not be sold  readily)  and hard to value,
especially in declining markets.

MARKET RISK
The risk that the market value of a Portfolio's  investments  will  fluctuate as
the stock and bond markets  fluctuate.  Market risk may affect a single  issuer,
industry or section of the economy or may affect the market as a whole.

PREPAYMENT RISK
The risk that issuers will prepay fixed rate  obligations  when  interest  rates
fall,  forcing the  Portfolio to re-invest in  obligations  with lower  interest
rates than the original obligations.

RESTRICTED SECURITIES RISK
The risk that a buyer will be difficult  to come by and selling  price will need
to be less than originally  anticipated because these restricted  securities may
only be sold in privately negotiated transactions.

<PAGE>

                                                                              10

SMALL COMPANY RISK
The risk  that  investments  in  smaller  companies  may be more  volatile  than
investments in larger companies.  Smaller companies generally  experience higher
growth  rates and higher  failure  rates than do larger  companies.  The trading
volume of the  securities  of smaller  companies is normally  lower than that of
larger companies. Short-term changes in the demand for the securities of smaller
companies generally has a disproportionate effect on their market price, tending
to make prices rise more in response to buying  demand and fall more in response
to selling pressure.

YEAR 2000
The Trusts could be adversely  affected by problems relating to the inability of
computer systems used by the Adviser and the Trusts' other service  providers to
recognize the year 2000. While year 2000-related  computer problems could have a
negative  effect on the  Portfolios,  the  Adviser  is  working  to avoid  these
problems in its own  computer  systems  and to obtain  assurances  from  service
providers that they are taking similar steps.

EURO CONVERSION
The  Portfolios  also could be adversely  affected by the conversion of European
currencies into the Euro beginning  January 1, 1999. This conversion will not be
complete until 2002, and its full  implementation  may be delayed.  Difficulties
with the  conversion  and potential  delays may  significantly  impact  European
capital markets and could increase volatility in world capital markets.


Please note that there are other  circumstances  not described  here which could
adversely  affect your  investment  and  potentially  prevent a  Portfolio  from
achieving its objectives.

<PAGE>

                                                                              11


ADVISER

Conseco Capital Management,  Inc. (CCM) is a wholly owned subsidiary of Conseco,
Inc., a publicly  owned  financial  services  company that provides  specialized
annuity, life and health insurance products. CCM serves as the "Adviser" to each
of the Portfolios and as adviser to other registered  investment  companies.  In
addition  to  managing  the  invested  assets  of  Conseco,  Inc.,  CCM  manages
foundations,  endowments,  corporations,  government and unions.  As of June 30,
1999, CCM managed over $41.0 billion.


<PAGE>

                                                                              12

ADVISORY FEES

Since this is the first year of operations for the High Yield  Portfolio and the
Conseco 20 Focus Portfolio,  no advisory fees were paid in prior years. However,
the High Yield  Portfolio and Conseco 20 Focus  Portfolio  have each executed an
Advisory Agreement with CCM in which each Portfolio will pay to CCM on an annual
basis 0.70% of the average daily value of the net assets.

                                    (Sidebar)


CONSECO CAPITAL MANAGEMENT, INC.
11825 N. Pennsylvania Street, Carmel, Indiana 46032


PORTFOLIO MANAGERS OF CONSECO SERIES TRUST

HIGH YIELD PORTFOLIO:
PETER C. ANDERSEN, CFA, VICE PRESIDENT, PORTFOLIO ANALYTICS
CONSECO CAPITAL MANAGEMENT, INC.
At CCM, Mr.  Andersen is responsible for managing below  investment  grade fixed
income portfolios for institutional client accounts and is the portfolio manager
of other affiliated investment companies.  Prior to joining the Adviser in 1997,
he was a portfolio manager for Colonial Management Associates,  where he managed
over $650 million in high-yield, tax-free mutual funds.

CONSECO 20 FOCUS PORTFOLIO:
THOMAS J. PENCE, CFA, SENIOR VICE PRESIDENT
CONSECO CAPITAL MANAGEMENT, INC.
Mr. Pence is the portfolio manager for the Portfolio.  Since joining the Adviser
in 1992,  Mr. Pence has been  responsible  for the  management  of the Adviser's
equity  portfolios  and for the  oversight  of the  equity  investment  process.
Additionally, he is portfolio manager of other affiliated investment companies.

ERIK J. VOSS, SECOND VICE PRESIDENT, SENIOR SECURITIES ANALYST
CONSECO CAPITAL MANAGEMENT, INC.
At CCM, Mr. Voss is also  responsible  for  assisting in research and  portfolio
management efforts for all of the Adviser's equity portfolios.  Prior to joining
the  Adviser in 1996,  Mr. Voss  worked as an equity  analyst for Gardner  Lewis
Asset Management for over three years.


<PAGE>

                                                                              13

PURCHASE AND REDEMPTION OF SHARES

Portfolio  shares  are  currently   offered  to  insurance   separate   accounts
established  by insurance  companies to fund variable  annuity and variable life
insurance contracts. Individuals may not purchase Portfolio shares directly from
the  Trust.  Shares  of each  Portfolio  are  purchased  or  redeemed  at  their
respective net asset values next computed (without a sales charge) after receipt
of an appropriate order.

A  Portfolio's  net asset value (NAV) per share is the total market value of the
Portfolio's  securities  and other assets minus its  liabilities  divided by the
total  number  of shares  outstanding.  Because  the  value of each  Portfolio's
securities  changes  every  business  day, the  Portfolio's  share price usually
changes as well.

Each  Portfolio  calculates  its NAV per share at the close of  regular  trading
(normally 4:00 p.m.,  Eastern Time) on the New York Stock Exchange  (NYSE).  The
NYSE is open every day for trading, except:

- --------------------------- ---------------------- -------------------------
Saturday                    Presidents' Day        Labor Day
Sunday                      Good Friday            Thanksgiving Day
New Year's Day              Memorial Day           Christmas Day
Martin Luther King, Jr. Day Independence Day

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


The NAV is  generally  based on the  market  price of the  securities  held in a
Portfolio.  Securities  held by all  Portfolios  are  valued  based  on  readily
available market quotations.

Under the direction of the Board,  the  Portfolios  may use a practice  known as
fair value pricing under the following circumstances:
  o Securities and assets for which market quotations are not readily available
  o Events  occur after an exchange  closes which are likely to affect the value
    of the security
  o Trust's  management  strongly believes a market price is not reflective of a
    security's appropriate value
When using fair value pricing,  the net asset value of the Portfolios can change
over periods during which shareholders cannot purchase or redeem shares.


<PAGE>

                                                                              14

DIVIDENDS AND DISTRIBUTIONS

Each  Portfolio  distributes  at least 90% of its net  investment  income to its
shareholders  to meet  requirements  of the Internal  Revenue Code applicable to
regulated investment companies.

Investors should understand that, as Contract Owners,  they will not receive any
dividends or other distributions directly from the Trust or the Portfolios.  All
such  dividends and other  distributions  are payable to, and reinvested by, the
separate  accounts  of the  insurance  company in which  contract  premiums  are
invested.

Dividends from net  investment  income are declared and reinvested in additional
full and fractional  shares by each Portfolio  according to the schedule  below.
The Trustees may elect to change dividend distribution intervals.

SCHEDULE OF DIVIDEND REINVESTMENTS

- ------------------------------ -------------------------------
PORTFOLIO                      DECLARED AND REINVESTED
- ------------------------------ -------------------------------
High Yield Portfolio           Monthly
- ------------------------------ -------------------------------
Conseco 20 Focus Portfolio     Quarterly
- ------------------------------ -------------------------------

Capital  gains - i.e.,  the  excess  of net  long-term  capital  gain  over  net
short-term capital loss - are generally declared and distributed to shareholders
annually after the close of the Portfolio's fiscal year.

SEE THE APPLICABLE  CONTRACT  PROSPECTUS FOR  INFORMATION  REGARDING THE FEDERAL
INCOME  TAX  TREATMENT  OF  DISTRIBUTIONS  TO  THE  INSURANCE  COMPANY  SEPARATE
ACCOUNTS.


<PAGE>

                                                                              15

                                                                        APPENDIX

PRIOR PERFORMANCE OF SIMILAR FUNDS

The High Yield  Portfolio  and the Conseco 20 Focus  Portfolio are modeled after
the High Yield Fund and the  Conseco 20 Fund ("CFG  Funds")  which are  existing
funds of the Conseco Fund Group ("CFG") that are managed by the Adviser, Conseco
Capital   Management,   Inc.,  and  have  investment   objectives  and  policies
substantially  similar to the  Portfolios.  While the  Portfolios are investment
choices for variable  annuity and  variable  life  contracts,  shares of the CFG
Funds are  distributed  through  multiple  distribution  channels  to the retail
marketplace in four separate classes (Classes A, B, C and Y).

Below you will find  information  about the performance of Class A shares of the
CFG Funds, NOT the Portfolios.  The performance data of the Class A CFG Funds is
provided in two ways: (1) net of all management fees,  distribution  fees, other
expenses,  and the applicable sales charge,  and (2) net of all management fees,
distribution fees and other expenses. Although the Portfolios have substantially
similar investment objectives and policies,  the same investment adviser and the
same portfolio  managers as the  corresponding  CFG Funds, you should not assume
that the Portfolios will have the same future  performance of the  corresponding
CFG Funds due to,  among other  things,  differences  in expenses and cash flows
between a Portfolio and the corresponding CFG Fund.  Moreover,  past performance
information  is based on  historical  earnings  and is not  intended to indicate
future performance of either the CFG Funds or the Portfolios.

The  investment  characteristics  of each of these  Portfolios  are  intended to
closely resemble the investment  characteristics  of the corresponding CFG Fund.
Depending on the Portfolio  involved,  similarity of investment  characteristics
may involve factors such as industry diversification,  portfolio beta, portfolio
quality,  average maturity of fixed-income assets,  equity/non-equity mixes, and
individual  holdings.  The  Adviser  also may  manage  other  similar  funds and
accounts  that  may  have  better  or  worse  performance  than  the CFG  Funds,
performance  information  for which is not presented  here due to differences in
factors such as  investment  policies  and/or  portfolio  management  strategies
and/or because these accounts are not mutual funds.

The table below sets forth each Portfolio, its corresponding CFG Fund - Class A,
the date the Adviser began  managing the CFG Fund (referred to as the "inception
date") and net asset size as of September 30, 1999.



                                       Corresponding CFG Fund - Class A
    PORTFOLIO                          (INCEPTION DATE AND NET ASSET SIZE)

    High Yield Portfolio               Conseco High Yield Fund (Jan. 1, 1998)
                                       $115,825,618

    Conseco 20 Focus Portfolio         Conseco 20 Portfolio (Jan. 1, 1998)
                                       $108,788,069


<PAGE>

                                                                              16

The following table shows the average annualized total returns for the CFG Funds
- - Class A for the one year and since  inception  periods  ending  September  30,
1999. These figures are based on the gross investment performance of CFG Class A
shares and  calculated  as  described  above.  Note that the  actual  investment
performance  experienced by the investors in variable  annuity and variable life
insurance  contracts issued by affiliated and unaffiliated  insurance  companies
would be lower  than the gross  investment  performance  of the CFG Funds due to
expenses at the separate account level; these expenses typically are higher than
those borne by investors in CFG or CST. The following CFG  performance  does not
represent  the  historical  performance  of the  Portfolios  and  should  not be
interpreted as indicative of the future performance of the Portfolios.


                               PERFORMANCE HISTORY
                              THE CONSECO 20 FUND
                                 CLASS A SHARES

<TABLE>
<CAPTION>

                                                One Year                     Since Inception (1/1/98)
                                                (as of September 30, 1999)   (as of September 30, 1999)
                                                ------------------------------------------------------------
<S>                                             <C>                          <C>
AVERAGE TOTAL RETURN (NET OF ALL FEES AND       54.22%                       27.13%
- ------------------------------------------
EXPENSES)
- ---------
AVERAGE TOTAL RETURN (WITHOUT DEDUCTING CLASS   63.63%                       31.51%
- ----------------------------------------------
A SALES CHARGE**)
- -----------------
</TABLE>


                               PERFORMANCE HISTORY
                               THE HIGH YIELD FUND
                                 CLASS A SHARES

<TABLE>
<CAPTION>

                                                One Year                     Since Inception (1/1/98)
                                                (as of September 30,         (as of September 30,
                                                 1999)                        1999)
                                                ------------------------------------------------------------
<S>                                             <C>                          <C>
AVERAGE TOTAL RETURN (NET OF ALL FEES AND       0.24%                        2.85%
- ------------------------------------------
EXPENSES)
- ---------
AVERAGE TOTAL RETURN (WITHOUT DEDUCTING CLASS   6.36%                        6.39%
- ----------------------------------------------
A SALES CHARGE**)
- -----------------
</TABLE>


**This performance is net of all fees and expenses except for applicable maximum
  Sales Charge.


<PAGE>

                                                                              17

                                  [back cover]

FOR MORE INFORMATION

More information on the Conseco Series Trust is available free upon request:

SHAREHOLDER REPORTS
Additional  information  about the Portfolios'  investments will be available in
the Portfolios' first annual and semi-annual reports to shareholders.

STATEMENT OF ADDITIONAL INFORMATION (SAI)
The SAI provides more details about each Portfolio and its policies.  The SAI is
on file with the Securities and Exchange Commission (SEC) and is incorporated by
reference into (is legally considered part of) this prospectus.

(Sidebar)

To obtain SAI, or other information:

BY TELEPHONE
Call 800-557-7043

BY MAIL
Conseco Series Trust
Attn: Administrative Offices
11815 N. Pennsylvania Street
Carmel, IN 46032

BY EMAIL
[email protected]

ON THE  INTERNET
Text-only  versions of the  prospectus  and other  documents  pertaining  to the
Portfolios can be viewed online or downloaded from:
    SEC
    http://www.sec.gov


Information  about the Trust (including the SAI) can also be reviewed and copied
at the SEC's public reference room in Washington,  DC (phone 800-SEC-0330).  Or,
you can obtain  copies of this  information  by sending a request,  along with a
duplicating  fee,  to  the  SEC's  Public  Reference  Section,   Washington,  DC
20549-6009.

Registration Number: 811-3641



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