JANUS ASPEN SERIES
485APOS, 1999-10-26
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933               [X]

         Pre- Effective Amendment No.                                 [ ]

         Post-Effective Amendment No. 20                              [X]

                                           and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT
         OF 1940                                                      [X]

         Amendment No. 22                                             [X]

                                (Check appropriate box or boxes.)

JANUS ASPEN SERIES
(Exact Name of Registrant as Specified in Charter)

100 Fillmore Street, Denver, Colorado 80206-4928
Address of Principal Executive Offices   (Zip Code)

Registrant's Telephone No., including Area Code:  303-333-3863

Thomas A. Early - 100 Fillmore Street, Denver, Colorado 80206-4928
(Name and Address of Agent for Service)

Approximate Date of Proposed Offering:  December 31, 1999

It is proposed that this filing will become effective  (check  appropriate box):
     [ ] immediately upon filing pursuant to paragraph (b) of Rule 485
     [ ] on (date)  pursuant to paragraph  (b) of Rule 485
     [ ] 60 days after filing  pursuant to paragraph  (a)(1) of Rule 485
     [X] on (December  31, 1999) pursuant to paragraph (a)(1) of Rule 485
     [ ] 75 days after filing pursuant  to  paragraph  (a)(2) of Rule 485
     [ ] on (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:
     [ ] This post-effective amendment designates a new effective date for a
         previously filed post-effective amendment.


<PAGE>


                               JANUS ASPEN SERIES

                              Cross Reference Sheet
                   Between the Prospectuses and Statements of
                    Additional Information and Form N-1A Item

This Post-Effective  Amendment No. 20 contains the Service Shares Prospectus and
Statements of Additional Information, and supplements to the Prospectuses of the
Retirement Shares and Institutional Shares. The Retirement Shares Prospectus and
Statements of Additional  Information  are  incorporated  herein by reference to
Post-Effective  Amendment  No. 19, filed on June 21, 1999 and the  Institutional
Shares  Prospectus and  Statements of Additional  Information  are  incorporated
herein by reference to Post-Effective Amendment No. 18, filed on April 30, 1999.

FORM N-1A ITEM                             CAPTION IN PROSPECTUSES

PART A

1.    Front and Back Cover Pages           Cover Pages

2.    Risk/Return Summary:                 Risk/Return Summary
      Investments, Risks, and
      Performance

3.    Risk/Return Summary:  Fee            Risk/Return Summary
      Table

4.    Investment Objectives,               Investment Objectives, Principal
      Principal Investment                 Investment Strategies, and Risks;
      Strategies, and Related Risks        Rating Categories

5.    Management's Discussion of           Not Applicable
      Fund Performance

6.    Management, Organization, and        Management of the Funds
      Capital Structure

7.    Shareholder Information              Shareholder's Guide; Other
                                           Information; Distributions and
                                           Taxes

8.    Distribution Arrangements            Distributions and Taxes

9.    Financial Highlights                 Financial Highlights
      Information


<PAGE>



FORM N-1A ITEM                             CAPTION IN STATEMENTS OF
                                           ADDITIONAL INFORMATION

PART B

10.   Cover Page and Table of              Cover Page; Table of Contents
      Contents

11.   Fund History                         Miscellaneous Information

12.   Description of the Fund and          Classification, Portfolio Turnover,
      Its Investments and Risks            Investment Policies and Restrictions,
                                           Investment Strategies and Risks;

13.   Management of the Fund               Investment Adviser; Trustees and
                                           Officers

14.   Control Persons and Principal        Principal Shareholders
      Holders of Securities


15.   Investment Advisory and Other       Investment Adviser; Custodian,
      Services                            Transfer Agent and Certain
                                          Affiliations; Portfolio Transactions
                                          and Brokerage; Trustees and Officers;
                                          Miscellaneous Information

16.   Brokerage Allocation and            Portfolio Transactions and
      Other Practices                     Brokerage

17.   Capital Stock and Other             Purchases; Redemptions; Miscellaneous
      Securities                          Information

18.   Purchase, Redemption, and           Purchases; Redemptions; Miscellaneous
      Pricing of Shares                   Information

19.   Taxation of the Fund                Income Dividends, Capital Gains
                                          Distributions and Tax Status

20.   Underwriters                        Custodian, Transfer Agent, and
                                          Certain Affiliations

<PAGE>

21.   Calculation of Performance          Performance Information (Combined
      Data                                Service Shares Statements of
                                          Additional Information);
                                          Performance Data (Money Market
                                          Fund Statement of Additional
                                          Information only)

22.   Financial Statements                Financial Statements


<PAGE>

THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY
NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER
TO SELL THESE SECURITIES AND IS NOT SOLICITING AN OFFER TO BUY THESE SECURITIES
IN ANY STATE WHERE THE OFFER IS NOT PERMITTED.


                                         [JANUS LOGO]


                                     Subject to Completion
                         Preliminary Prospectus Dated October 26, 1999


                   Janus Aspen Series

                   Service Shares


                              PROSPECTUS

                              Growth Portfolio

                              Aggressive Growth Portfolio
                              Capital Appreciation Portfolio
                              International Growth Portfolio
                              Worldwide Growth Portfolio
                              Balanced Portfolio
                              Equity Income Portfolio
                              Growth and Income Portfolio
                              Flexible Income Portfolio
                              High-Yield Portfolio
                              Money Market Portfolio

                   THE SECURITIES AND EXCHANGE COMMISSION HAS NOT APPROVED OR
                   DISAPPROVED OF THESE SECURITIES OR PASSED ON THE ACCURACY OR
                   ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE
                   CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>

    [JANUS LOGO]


                This prospectus describes eleven mutual funds (the "Portfolios")
                with a variety of investment objectives, including growth of
                capital, current income and a combination of growth and income.
                Each Portfolio of Janus Aspen Series currently offers three
                classes of shares. The Service Shares, (the "Shares"), are
                offered by this prospectus in connection with investment in and
                payments under variable annuity contracts and variable life
                insurance contracts (collectively, "variable insurance
                contracts"), as well as certain qualified retirement plans.



                Janus Aspen Series sells and redeems its Shares at net asset
                value without sales charges, commissions or redemption fees.
                Each variable insurance contract involves fees and expenses that
                are not described in this Prospectus. Certain Portfolios may not
                be available in connection with a particular contract and
                certain contracts may limit allocations among the Portfolios.
                See the accompanying contract prospectus for information
                regarding contract fees and expenses and any restrictions on
                purchases or allocations.



                This prospectus contains information that a prospective
                purchaser of a variable insurance contract or plan participant
                should consider in conjunction with the accompanying separate
                account prospectus of the specific insurance company product
                before allocating purchase payments or premiums to the
                Portfolios.

<PAGE>
                                                               Table of contents

<TABLE>
                <S>                                                           <C>
                RISK/RETURN SUMMARY
                   Growth Portfolios........................................    2
                   Combination Portfolios...................................    7
                   Fixed-Income Portfolios..................................   10
                   Money Market Portfolio...................................   12
                   Fees and expenses........................................   14
                INVESTMENT OBJECTIVES, PRINCIPAL INVESTMENT STRATEGIES AND
                RISKS
                   Growth Portfolios........................................   16
                   Combination Portfolios...................................   18
                   Fixed-Income Portfolios..................................   20
                   General portfolio policies of the Portfolios other than
                   Money Market Portfolio...................................   21
                   Risks for Growth, Global Growth and Combination
                   Portfolios...............................................   24
                   Risks for Fixed-Income Portfolios........................   25
                   Risks Common to all Non-Money Market Portfolios..........   25
                   Money Market Portfolio...................................   27
                   Investment techniques....................................   28
                MANAGEMENT OF THE PORTFOLIOS
                   Investment adviser.......................................   30
                   Management expenses and expense limits...................   30
                   Investment personnel.....................................   31
                OTHER INFORMATION...........................................   34
                DISTRIBUTIONS AND TAXES
                   Distributions............................................   35
                   Taxes....................................................   35
                SHAREHOLDER'S GUIDE
                   Purchases................................................   37
                   Redemptions..............................................   38
                   Shareholder communications...............................   38
                FINANCIAL HIGHLIGHTS........................................   39
                GLOSSARY
                   Glossary of investment terms.............................   40
                RATING CATEGORIES
                   Explanation of rating categories.........................   44

</TABLE>

                                                            Table of contents  1
<PAGE>
Risk return summary

GROWTH PORTFOLIOS

          The Growth Portfolios are designed for long-term investors who seek
          growth of capital and who can tolerate the greater risks associated
          with common stock investments.

1. WHAT ARE THE INVESTMENT OBJECTIVES OF THE GROWTH PORTFOLIOS?

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

          DOMESTIC GROWTH PORTFOLIOS

          - GROWTH PORTFOLIO seeks long-term growth of capital in a manner
            consistent with the preservation of capital.

          - AGGRESSIVE GROWTH PORTFOLIO AND CAPITAL APPRECIATION PORTFOLIO
            seek long-term growth of capital.

          GLOBAL GROWTH PORTFOLIOS

          - INTERNATIONAL GROWTH PORTFOLIO seeks long-term growth of capital.

          - WORLDWIDE GROWTH PORTFOLIO seeks long-term growth of capital in a
            manner consistent with the preservation of capital.

          The Portfolios' Trustees may change these objectives without a
          shareholder vote and the Portfolios will notify you of any changes
          that are material. If there is a material change to a Portfolio's
          objective or policies, you should consider whether that Portfolio
          remains an appropriate investment for you. There is no guarantee that
          a Portfolio will meet its objective.

2. WHAT ARE THE MAIN INVESTMENT STRATEGIES OF THE GROWTH PORTFOLIOS?

          The portfolio managers apply a "bottom up" approach in choosing
          investments. In other words, they look for companies with earnings
          growth potential one at a time. If a portfolio manager is unable to
          find investments with earnings growth potential, a significant portion
          of a Portfolio's assets may be in cash or similar investments.

          GROWTH PORTFOLIO invests primarily in common stocks selected for their
          growth potential. Although the Portfolio can invest in companies of
          any size, it generally invests in larger, more established companies.

          AGGRESSIVE GROWTH PORTFOLIO invests primarily in common stocks
          selected for their growth potential, and normally invests at least 50%
          of its equity assets in medium-sized companies.

          CAPITAL APPRECIATION PORTFOLIO invests primarily in common stocks
          selected for their growth potential. The Portfolio may invest in
          companies of any size, from larger, well-established companies to
          smaller, emerging growth companies.

          INTERNATIONAL GROWTH PORTFOLIO normally invests at least 65% of its
          total assets in securities of issuers from at least five different
          countries, excluding the United States. Although the Portfolio intends
          to invest substantially all of its assets in issuers located outside
          the United States, it may invest in U.S. issuers and it may at times
          invest all of its assets in fewer than five countries, or even a
          single country.

          WORLDWIDE GROWTH PORTFOLIO invests primarily in common stocks of
          companies of any size throughout the world. The Portfolio normally
          invests in issuers from at least five different countries, including
          the United States. The Portfolio may at times invest in fewer than
          five countries or even a single country.

 2 Janus Aspen Series
<PAGE>

3. WHAT ARE THE MAIN RISKS OF INVESTING IN THE GROWTH PORTFOLIOS?

          The biggest risk is that the Portfolios' returns may vary, and you
          could lose money. If you are considering investing in any of the
          Growth Portfolios, remember that they are each designed for long-term
          investors who can accept the risks of investing in a portfolio with
          significant common stock holdings. Common stocks tend to be more
          volatile than other investment choices.

          The value of a Portfolio may decrease if the value of an individual
          company in the portfolio decreases. The value of a Portfolio could
          also decrease if the stock market goes down. If the value of a
          Portfolio decreases, its net asset value (NAV) will also decrease,
          which means if you sell your shares in a Portfolio you would get back
          less money.

          INTERNATIONAL GROWTH PORTFOLIO AND WORLDWIDE GROWTH PORTFOLIO may have
          significant exposure to foreign markets. As a result, their returns
          and NAV may be affected to a large degree by fluctuations in currency
          exchange rates or political or economic conditions in a particular
          country.

          AGGRESSIVE GROWTH PORTFOLIO AND CAPITAL APPRECIATION PORTFOLIO are
          nondiversified. In other words, they may hold larger positions in a
          smaller number of securities than a diversified fund. As a result, a
          single security's increase or decrease in value may have a greater
          impact on a Portfolio's NAV and total return.

          An investment in these Portfolios is not a bank deposit and is not
          insured or guaranteed by the Federal Deposit Insurance Corporation or
          any other government agency.


          The following  information  provides  some  indication of the risks of
          investing in the Growth  Portfolios  by showing how each of the Growth
          Portfolios'  performance has varied over time. The Portfolios' Service
          Shares commenced  operations on January 1, 2000. The returns shown for
          the Service Shares of these  Portfolios have been calculated  based on
          the  historical  performance  of a  different  class  of  shares  (the
          Institutional Shares) prior to January 1, 2000 (adjusted for estimated
          expenses  of  Service  Shares).  The bar  charts  depict the change in
          performance from  year-to-year  during the period indicated but do not
          include  charges and expenses  attributable  to any insurance  product
          which would lower the performance  illustrated.  The Portfolios do not
          impose any sales or other  charges  that  would  affect  total  return
          computations.   Total  return  figures  include  the  effect  of  each
          Portfolio's  expenses.  The tables  compare the average annual returns
          for the Service Shares of each Portfolio for the periods  indicated to
          a broad-based securities market index.


                                                          Risk return summary  3
<PAGE>


           GROWTH PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                1994      1995       1996     1997     1998
                               ------    ------     ------   ------   ------
                               <S>       <C>        <C>      <C>      <C>
                               2.71%     29.96%     18.14%   22.49%   35.59%

     Best Quarter  4th-1998  27.71%     Worst Quarter  3rd-1998  (10.95%)
</TABLE>

                          Average annual total return for periods ended 12/31/98
                          ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                               Since Inception
                                                                          1 year    5 years       (9/13/93)
                <S>                                                       <C>       <C>        <C>
                Growth Portfolio - Service Shares                         35.59%    21.24%         20.54%
                S&P 500 Index*                                            28.74%    24.08%         23.06%
                                                                      -----------------------------------------
</TABLE>


           * The S&P 500 is the Standard & Poor's Composite Index of 500 Stocks,
             a widely recognized, unmanaged index of common stock prices.


           AGGRESSIVE GROWTH PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                1994      1995       1996     1997     1998
                               ------    ------     ------   ------   ------
                               <S>       <C>        <C>      <C>      <C>
                               16.33%    27.38%      7.72%   12.53%   34.19%

     Best Quarter  4th-1998  34.65%     Worst Quarter  3rd-1998  (15.00%)
</TABLE>

                          Average annual total return for periods ended 12/31/98
                          ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                               Since Inception
                                                                          1 year    5 years       (9/13/93)
                <S>                                                       <C>       <C>        <C>
                Aggressive Growth Portfolio - Service Shares              34.19%    19.27%         21.68%
                S&P 400 Mid Cap Index*                                    18.25%    18.67%         18.06%
                                                                      ------------------------------------------
</TABLE>


           * The S&P 400 Mid Cap Index is an unmanaged group of 400 domestic
             stocks chosen for their market size, liquidity and industry group
             representation.

 4 Janus Aspen Series
<PAGE>


           CAPITAL APPRECIATION PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                                                       1998
                                                                      ------
<S>                                                                   <C>
                                                                      57.91%

     Best Quarter  4th-1998  33.93%     Worst Quarter  3rd-1998   (9.99%)
</TABLE>

                          Average annual total return for periods ended 12/31/98
                          ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                           Since Inception
                                                                                 1 year       (5/1/97)
                <S>                                                              <C>       <C>
                Capital Appreciation Portfolio - Service Shares                  57.91%        51.65%
                S&P 500 Index*                                                   28.74%        31.38%
                                                                             ------------------------------
</TABLE>


           * The S&P 500 is the Standard & Poor's Composite Index of 500 Stocks,
             a widely recognized, unmanaged index of common stock prices.


           INTERNATIONAL GROWTH PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                          1995       1996     1997     1998
                                         ------     ------   ------   ------
                                         <S>        <C>      <C>      <C>
                                         23.15%     34.71%   18.36%   16.88%

     Best Quarter  4th-1998  16.16%     Worst Quarter  3rd-1998  (17.76%)
</TABLE>

                          Average annual total return for periods ended 12/31/98
                          ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                           Since Inception
                                                                                 1 year       (5/2/94)
                <S>                                                              <C>       <C>
                International Growth Portfolio - Service Shares                  16.88%        18.87%
                Morgan Stanley Capital International EAFE Index*                 20.00%         8.11%
                                                                             -----------------------------
</TABLE>


           * The Morgan Stanley Capital International EAFE Index is a market
             capitalization weighted index composed of companies representative
             of the market structure of 20 Developed Market countries in Europe,
             Australasia and the Far East.

                                                          Risk return summary  5
<PAGE>


           WORLDWIDE GROWTH PORTFOLIO - SERVICE SHARES

<TABLE>
<CAPTION>
                                1994      1995       1996     1997     1998
                               ------    ------     ------   ------   ------
<S>                            <C>       <C>        <C>      <C>      <C>
                               1.53%     27.29%     28.80%   21.91%   28.71%

     Best Quarter  4th-1998  20.87%     Worst Quarter  3rd-1998  (17.00%)
</TABLE>

                         Average annual total return for periods ended 12/31/98
                         ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                               Since Inception
                                                                          1 year    5 years       (9/13/93)
                <S>                                                       <C>       <C>        <C>
                Worldwide Growth Portfolio - Service Shares               28.71%    21.21%         23.76%
                Morgan Stanley International Worldwide Index*             24.34%    15.68%         14.39%
                                                                      ------------------------------------------
</TABLE>


           * The Morgan Stanley International Worldwide Index is a market
             capitalization weighted index composed of countries representative
             of the market structure of 47 Developed and Emerging Markets.

          The Growth Portfolios' past performance does not necessarily indicate
          how they will perform in the future.

 6 Janus Aspen Series
<PAGE>

COMBINATION PORTFOLIOS

          The Combination Portfolios are designed for investors who primarily
          seek growth of capital with varying degrees of emphasis on income.
          They are not designed for investors who desire a consistent level of
          income.

1. WHAT ARE THE INVESTMENT OBJECTIVES OF THE COMBINATION PORTFOLIOS?

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

          - BALANCED PORTFOLIO seeks long-term capital growth, consistent
            with preservation of capital and balanced by current income.

          - EQUITY INCOME PORTFOLIO seeks current income and long-term growth
            of capital.

          - GROWTH AND INCOME PORTFOLIO seeks long-term capital growth and
            current income.

          The Trustees may change these objectives without a shareholder vote
          and the Portfolios will notify you of any changes that are material.
          If there is a material change to a Portfolio's objective or policies,
          you should consider whether that Portfolio remains an appropriate
          investment for you. There is no guarantee that a Portfolio will meet
          its objective.

2. WHAT ARE THE MAIN INVESTMENT STRATEGIES OF THE COMBINATION PORTFOLIOS?

          The portfolio managers apply a "bottom up" approach in choosing
          investments. In other words, they look mostly for equity and
          income-producing securities that meet their investment criteria one at
          a time. If a portfolio manager is unable to find such investments,
          much of a Portfolio's assets may be in cash or similar investments.

          BALANCED PORTFOLIO normally invests 40-60% of its assets in securities
          selected primarily for their growth potential and 40-60% of its assets
          in securities selected primarily for their income potential. The
          Portfolio will normally invest at least 25% of its assets in
          fixed-income securities.

          EQUITY INCOME PORTFOLIO normally emphasizes investments in common
          stocks, and growth potential is a significant investment
          consideration. Normally, it invests at least 65% of its assets in
          income-producing equity securities.

          GROWTH AND INCOME PORTFOLIO normally emphasizes investments in common
          stocks. It will normally invest up to 75% of its assets in equity
          securities selected primarily for their growth potential, and at least
          25% of its assets in securities the portfolio manager believes have
          income potential. Equity securities may make up part of this income
          component if they currently pay dividends or the portfolio manager
          believes they have potential for increasing or commencing dividend
          payments.

3. WHAT ARE THE MAIN RISKS OF INVESTING IN THE COMBINATION PORTFOLIOS?

          The biggest risk is that the Portfolios' returns may vary, and you
          could lose money. If you are considering investing in any of the
          Combination Portfolios, remember that they are each designed for
          long-term investors who can accept the risks of investing in a
          portfolio with significant common stock holdings. Common stocks tend
          to be more volatile than other investment choices.

          The value of a Portfolio may decrease if the value of an individual
          company in the portfolio decreases. The value of a Portfolio could
          also decrease if the stock market goes down. If the value of a
          Portfolio decreases, its NAV will also decrease, which means if you
          sell your shares in a Portfolio you would get back less money.

                                                          Risk return summary  7
<PAGE>

          The income component of the Portfolios' holdings includes fixed-income
          securities. A fundamental risk to the income component is that the
          value of these securities will fall if interest rates rise. Generally,
          the value of a fixed-income portfolio will decrease when interest
          rates rise, which means the Portfolio's NAV may likewise decrease.
          Another fundamental risk associated with fixed-income securities is
          credit risk, which is the risk that an issuer of a bond will be unable
          to make principal and interest payments when due.

          An investment in these Portfolios is not a bank deposit and is not
          insured or guaranteed by the Federal Deposit Insurance Corporation or
          any other government agency.


          The following  information  provides  some  indication of the risks of
          investing  in  the   Combination   Portfolios   by  showing  how  each
          Combination   Portfolio's   performance  has  varied  over  time.  The
          Portfolio's  Service Shares  commenced  operations on January 1, 2000.
          The returns shown for the Service Shares of the  Portfolios  have been
          calculated based on the historical performance of a different class of
          shares (the  Institutional  Shares) prior to January 1, 2000 (adjusted
          for estimated  expenses of Service Shares).  The bar charts depict the
          change in performance  from  year-to-year  during the period indicated
          but do not include charges and expenses  attributable to any insurance
          product which would lower the performance illustrated.  The Portfolios
          do not  impose any sales or other  charges  that  would  affect  total
          return  computations.  Total return figures include the effect of each
          Portfolio's  expenses.  The tables  compare the average annual returns
          for the Service Shares of each Portfolio for the period indicated to a
          broad-based securities market index.



           BALANCED PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                1994      1995       1996     1997     1998
                               ------    ------     ------   ------   ------
<S>                            <C>       <C>        <C>      <C>      <C>
                               0.84%     24.79%     16.18%   21.96%   34.03%

     Best Quarter  4th-1998  20.26%     Worst Quarter  3rd-1998  (5.02%)
</TABLE>

                          Average annual total return for periods ended 12/31/98
                          ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                               Since Inception
                                                                          1 year    5 years       (9/13/93)
                <S>                                                       <C>       <C>        <C>
                Balanced Portfolio - Service Shares                       34.03%    19.11%         19.49%
                S&P 500 Index*                                            28.74%    24.08%         23.06%
                Lehman Brothers Gov't/Corp Bond Index**                    9.47%     7.30%          6.90%
                                                                      ------------------------------------------
</TABLE>


           * The S&P 500 is the Standard & Poor's Composite Index of 500 Stocks,
             a widely recognized, unmanaged index of common stock prices.
          ** Lehman Brothers Gov't/Corp Bond Index is composed of all bonds that
             are of investment grade with at least one year until maturity.

 8 Janus Aspen Series
<PAGE>


           EQUITY INCOME PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                                                       1998
                                                                      ------
<S>                                                                   <C>
                                                                      45.99%

     Best Quarter  4th-1998  28.47%     Worst Quarter  3rd-1998  (7.23%)
</TABLE>

                          Average annual total return for periods ended 12/31/98
                          ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                           Since Inception
                                                                                 1 year       (5/1/97)
                <S>                                                              <C>       <C>
                Janus Equity Income Portfolio - Service Shares                   45.99%        49.78%
                S&P 500 Index*                                                   28.74%        31.38%
                                                                             ------------------------------
</TABLE>


          * The S&P 500 is the Standard & Poor's Composite Index of 500 Stocks,
            a widely recognized, unmanaged index of common stock prices.

           GROWTH AND INCOME PORTFOLIO - SERVICE SHARES


          Growth and Income Portfolio does not have a full calendar year return
          because the Portfolio commenced operations on May 1, 1998.

          The Combination Portfolios' past performance does not necessarily
          indicate how they will perform in the future.

                                                          Risk return summary  9
<PAGE>

FIXED-INCOME PORTFOLIOS

          The Fixed-Income Portfolios are designed for long-term investors who
          primarily seek current income.

1. WHAT ARE THE INVESTMENT OBJECTIVES OF THE FIXED-INCOME PORTFOLIOS?

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

          - FLEXIBLE INCOME PORTFOLIO seeks to obtain maximum total return,
            consistent with preservation of capital.

          - HIGH-YIELD PORTFOLIO seeks to obtain high current income. Capital
            appreciation is a secondary objective when consistent with its
            primary objective.

          The Trustees may change these objectives without a shareholder vote
          and the Portfolios will notify you of any changes that are material.
          If there is a material change to a Portfolio's objective or policies,
          you should consider whether it remains an appropriate investment for
          you. There is no guarantee that a Portfolio will meet its objective.

2. WHAT ARE THE MAIN INVESTMENT STRATEGIES OF THE FIXED-INCOME PORTFOLIOS?

          In addition to considering economic factors such as the effect of
          interest rates on a Portfolio's investments, the portfolio managers
          apply a "bottom up" approach in choosing investments. In other words,
          they look mostly for income-producing securities that meet their
          investment criteria one at a time. If a portfolio manager is unable to
          find such investments, a Portfolio's assets may be in cash or similar
          investments.

          FLEXIBLE INCOME PORTFOLIO invests primarily in a wide variety of
          income-producing securities such as corporate bonds and notes,
          government securities and preferred stock. As a fundamental policy,
          the Portfolio will invest at least 80% of its assets in
          income-producing securities. The Portfolio may own an unlimited amount
          of high-yield/high-risk fixed-income securities, and these securities
          may be a big part of the portfolio.

          HIGH-YIELD PORTFOLIO normally invests at least 65% of its assets in
          high-yield/high-risk fixed-income securities, and may at times invest
          all of its assets in these securities.

3. WHAT ARE THE MAIN RISKS OF INVESTING IN THE FIXED-INCOME PORTFOLIOS?

          Although the Fixed-Income Portfolios may be less volatile than funds
          that invest most of their assets in common stocks, the Portfolios'
          returns and yields will vary, and you could lose money.

          The Portfolios invest in a variety of fixed-income securities. A
          fundamental risk is that the value of these securities will fall if
          interest rates rise. Generally, the value of a fixed-income portfolio
          will decrease when interest rates rise, which means the Portfolio's
          NAV will likewise decrease. Another fundamental risk associated with
          fixed-income funds is credit risk, which is the risk that an issuer
          will be unable to make principal and interest payments when due.

          FLEXIBLE INCOME PORTFOLIO AND HIGH-YIELD PORTFOLIO may invest an
          unlimited amount of their assets in high-yield/high-risk securities,
          also known as "junk" bonds which may be sensitive to economic changes,
          political changes, or adverse developments specific to the company
          that issued the bond. These securities generally have a greater credit
          risk than other types of fixed-income securities. Because of these
          factors, the performance and NAV of the Fixed-Income Portfolios may
          vary significantly, depending upon their holdings of junk bonds.

 10 Janus Aspen Series
<PAGE>

          An investment in these Portfolios is not a bank deposit and is not
          insured or guaranteed by the Federal Deposit Insurance Corporation or
          any other government agency.


          The following  information  provides  some  indication of the risks of
          investing  in  the   Fixed-Income   Portfolios  by  showing  how  each
          Fixed-Income   Portfolio's  performance  has  varied  over  time.  The
          Portfolio's  Service Shares  commenced  operations on January 1, 2000.
          The returns shown for the Service Shares of these Portfolios have been
          calculated based on the historical performance of a different class of
          shares (the  Institutional  Shares) prior to January 1, 2000 (adjusted
          for estimated  expenses of Service Shares).  The bar charts depict the
          change in performance  from  year-to-year  during the period indicated
          but do not include charges and expenses  attributable to any insurance
          product which would lower the performance illustrated.  The Portfolios
          do not  impose any sales or other  charges  that  would  affect  total
          return  computations.  Total return figures include the effect of each
          Portfolio's  expenses.  The tables  compare the average annual returns
          for the Service Shares of each Portfolio for the periods  indicated to
          a broad-based securities market index.



           FLEXIBLE INCOME PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                1994      1995       1996     1997     1998
                               ------    ------     ------   ------   ------
<S>                            <C>       <C>        <C>      <C>      <C>
                               (0.91%)   23.86%     9.03%    11.52%    8.85%

     Best Quarter  2nd-1995  6.71%     Worst Quarter  1st-1996  (1.11%)
</TABLE>

                          Average annual total return for periods ended 12/31/98
                          ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                                Since Inception
                                                                           1 year    5 years       (9/13/93)
                <S>                                                        <C>       <C>        <C>
                Flexible Income Portfolio - Service Shares                 8.85%     10.20%          9.75%
                Lehman Brothers Gov't/Corp Bond Index*                     9.47%      7.30%          6.90%
                                                                       -----------------------------------------
</TABLE>


           * Lehman Brothers Gov't/Corp Bond Index is composed of all bonds that
             are of investment grade with at least one year until maturity.

                                                         Risk return summary  11
<PAGE>


           HIGH-YIELD PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                                              1997     1998
                                                             ------   ------
<S>                                                          <C>      <C>
                                                             15.98%    1.26%

     Best Quarter  1st-1998  5.52%     Worst Quarter  3rd-1998  (16.15%)
</TABLE>

                          Average annual total return for periods ended 12/31/98
                          ------------------------------------------------------


<TABLE>
<CAPTION>
                                                                                           Since Inception
                                                                                 1 year       (5/1/96)
                <S>                                                              <C>       <C>
                High-Yield Portfolio - Service Shares                            1.26%         10.96%
                Lehman Brothers High-Yield Bond Index*                           1.60%          7.15%
                                                                             -----------------------------
</TABLE>


           * Lehman Brothers High-Yield Bond Index is composed of fixed-rate,
             publicly issued, noninvestment grade debt.

          The Fixed-Income Portfolios' past performance does not necessarily
          indicate how they will perform in the future.

MONEY MARKET PORTFOLIO

          Money Market Portfolio is designed for investors who seek current
          income.

1. WHAT IS THE INVESTMENT OBJECTIVE OF MONEY MARKET PORTFOLIO?

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

          - MONEY MARKET PORTFOLIO seeks maximum current income to the extent
            consistent with stability of capital.

          The Trustees may change this objective without a shareholder vote and
          the Portfolio will notify you of any changes that are material. If
          there is a material change in the Portfolio's objective or policies,
          you should consider whether it remains an appropriate investment for
          you. There is no guarantee that the Portfolio will meet its objective.

2. WHAT ARE THE MAIN INVESTMENT STRATEGIES OF MONEY MARKET PORTFOLIO?

          MONEY MARKET PORTFOLIO will invest only in high-quality, short-term
          money market instruments that present minimal credit risks, as
          determined by Janus Capital. The Portfolio invests primarily in high
          quality debt obligations and obligations of financial institutions.
          Debt obligations may include commercial paper, notes and bonds, and
          variable amount master demand notes. Obligations of financial
          institutions include certificates of deposit and time deposits.

 12 Janus Aspen Series
<PAGE>

3. WHAT ARE THE MAIN RISKS OF INVESTING IN MONEY MARKET PORTFOLIO?

          The Portfolio's yields will vary as the short-term securities in the
          portfolio mature and the proceeds are reinvested in securities with
          different interest rates. Over time, the real value of the Portfolio's
          yield may be eroded by inflation. Although Money Market Portfolio
          invests only in high-quality, short-term money market instruments,
          there is a risk that the value of the securities it holds will fall as
          a result of changes in interest rates, an issuer's actual or perceived
          credit-worthiness or an issuer's ability to meet its obligations.

          An investment in Money Market Portfolio is not a deposit of a bank and
          is not insured or guaranteed by the Federal Deposit Insurance
          Corporation or any other government agency. Although the Portfolio
          seeks to preserve the value of your investment at $1.00 per share, it
          is possible to lose money by investing in Money Market Portfolio.


          The following  information  provides  some  indication of the risks of
          investing  in Money  Market  Portfolio  by  showing  how Money  Market
          Portfolio's  performance  has  varied  over  time.  The  Money  Market
          Portfolio Service Shares commenced  operations on January 1, 2000. The
          returns  shown  for the  Service  Shares of this  Portfolio  have been
          calculated based on the historical performance of a different class of
          shares (the  Institutional  Shares) prior to January 1, 2000 (adjusted
          for estimated  expenses of Service Shares).  The bar chart depicts the
          change in performance  from year to year, but does not include charges
          and expenses  attributable to any insurance  product which would lower
          the performance  illustrated.  The Portfolio does not impose any sales
          or other  charges that would affect total return  computations.  Total
          return figures include the effect of the Portfolio's expenses.



           MONEY MARKET PORTFOLIO - SERVICE SHARES


<TABLE>
<CAPTION>
                                                     1996     1997     1998
                                                    ------   ------   ------
<S>                                                 <C>      <C>      <C>
                                                     4.95%    5.08%    5.10%

     Best Quarter  3rd-1995  1.31%     Worst Quarter  2nd-1996  1.19%
</TABLE>


          For the Portfolio's current yield, call the Janus XpressLine(TM) at
          1-888-979-7737.


          Money Market Portfolio's past performance does not necessarily
          indicate how it will perform in the future.

                                                         Risk return summary  13
<PAGE>

FEES AND EXPENSES


          SHAREHOLDER FEES, such as sales loads, redemption fees or exchange
          fees, are charged directly to an investor's account. All Janus funds
          are no-load investments, so you will not pay any shareholder fees when
          you buy or sell shares of the Portfolios. However, each variable
          insurance contract involves fees and expenses not described in this
          prospectus. See the accompanying contract prospectus for information
          regarding contract fees and expenses and any restrictions on purchases
          or allocations.


          ANNUAL FUND OPERATING EXPENSES are paid out of a Portfolio's assets
          and include fees for portfolio management, maintenance of shareholder
          accounts, shareholder servicing, accounting and other services. You do
          not pay these fees directly but, as the example on the next page
          shows, these costs are borne indirectly by all shareholders.

 14 Janus Aspen Series
<PAGE>


          This table and example are designed to assist participants in
          qualified plans that invest in the Shares of the Portfolios in
          understanding the fees and expenses that you may pay as an investor in
          the Shares. The information shown is based upon estimated gross
          expenses (without the effect of expense offset arrangements) the
          Shares expect to incur in their initial fiscal year. OWNERS OF
          VARIABLE INSURANCE CONTRACTS THAT INVEST IN THE SHARES SHOULD REFER TO
          THE VARIABLE INSURANCE CONTRACT PROSPECTUS FOR A DESCRIPTION OF FEES
          AND EXPENSES, AS THE TABLE AND EXAMPLE DO NOT REFLECT DEDUCTIONS AT
          THE SEPARATE ACCOUNT LEVEL OR CONTRACT LEVEL FOR ANY CHARGES THAT MAY
          BE INCURRED UNDER A CONTRACT.


<TABLE>
<CAPTION>
                                                                              Total Annual Fund                   Total Annual Fund
                                                                                 Operating                            Operating
                                                     Distribution                 Expenses            Total            Expenses
                                        Management     (12b-1)       Other     Without Waivers       Waivers         With Waivers
                                           Fee         Fees(1)      Expenses   or Reductions(2)   and Reductions   or Reductions(2)
    <S>                                <C>             <C>           <C>          <C>                 <C>              <C>
    Growth Portfolio                      0.67%        0.25%         0.01%         0.93%             0.01%             0.92%
    Aggressive Growth Portfolio           0.67%        0.25%         0.01%         0.03%               N/A             0.93%
    Capital Appreciation
      Portfolio                           0.73%        0.25%         0.04%         1.02%             0.07%             0.95%
    International Growth
      Portfolio                           0.72%        0.25%         0.09%         1.06%             0.06%             1.00%
    Worldwide Growth Portfolio            0.66%        0.25%         0.05%         0.96%             0.01%             0.95%
    Balanced Portfolio                    0.67%        0.25%         0.01%         0.93%               N/A             0.93%
    Equity Income Portfolio               0.75%        0.25%         0.48%         1.48%             0.03%             1.45%
    Growth and Income Portfolio           0.75%        0.25%         0.13%         1.13%             0.09%             1.04%
    Flexible Income Portfolio             0.65%        0.25%         0.07%         0.97%               N/A             0.97%
    High-Yield Portfolio                  0.75%        0.25%         4.33%         5.33%             4.08%             1.26%
    Money Market Portfolio                0.25%        0.25%         0.16%         0.66%               N/A             0.66%
</TABLE>


- --------------------------------------------------------------------------------
   (1) Long-term shareholders may pay more than the economic equivalent of
       the maximum front-end sales charges permitted by the National
       Association of Securities Dealers, Inc.


   (2) All expenses are based on the estimated gross expenses the Shares
       expect to incur in their initial fiscal year and are stated both with
       and without contractual waivers and fee reductions by Janus Capital.
       Fee reductions for Growth, Aggressive Growth, Capital Appreciation,
       International Growth, Worldwide Growth, Balanced, Equity Income and
       Growth and Income Portfolios reduce the Management Fee to the level of
       the corresponding Janus retail fund. Other waivers, if applicable, are
       first applied against the Management Fee and then against Other
       Expenses. Janus Capital has agreed to continue the waivers and fee
       reductions until at least the next annual renewal of the advisory
       agreements.

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

   EXAMPLE:
   THE FOLLOWING EXAMPLE IS BASED ON EXPENSES WITHOUT WAIVERS OR
   REDUCTIONS. This example is intended to help you compare the cost of
   investing in the Portfolios with the cost of investing in other mutual
   funds. The example assumes that you invest $10,000 in each of the
   Portfolios for the time periods indicated then redeem all of your shares
   at the end of those periods. The example also assumes that your
   investment has a 5% return each year, and that the Portfolios' operating
   expenses remain the same. Although your actual costs may be higher or
   lower, based on these assumptions your costs would be:


<TABLE>
<CAPTION>
                                                                  1 Year     3 Years
                                                                  ------------------
    <S>                                                           <C>        <C>
    Growth Portfolio                                               $ 95      $  296
    Aggressive Growth Portfolio                                    $ 95      $  296
    Capital Appreciation Portfolio                                 $104      $  325
    International Growth Portfolio                                 $108      $  337
    Worldwide Growth Portfolio                                     $ 98      $  306
    Balanced Portfolio                                             $ 95      $  296
    Equity Income Portfolio                                        $151      $  468
    Growth and Income Portfolio                                    $115      $  359
    Flexible Income Portfolio                                      $ 99      $  309
    High-Yield Portfolio                                           $532      $1,591
    Money Market Portfolio                                         $ 67      $  211
</TABLE>


                                                         Risk return summary  15
<PAGE>
Investment objectives, principal investment
           strategies and risks

          Each of the Portfolios has a similar investment objective and similar
          principal investment strategies to a Janus retail fund:

<TABLE>
                <S>                                    <C>
                  Growth Portfolio                                                 Janus Fund
                  Aggressive Growth Portfolio                           Janus Enterprise Fund
                  Capital Appreciation Portfolio                           Janus Twenty Fund*
                  International Growth Portfolio                          Janus Overseas Fund
                  Worldwide Growth Portfolio                             Janus Worldwide Fund
                  Balanced Portfolio                                      Janus Balanced Fund
                  Equity Income Portfolio                            Janus Equity Income Fund
                  Growth and Income Portfolio                    Janus Growth and Income Fund
                  Flexible Income Portfolio                        Janus Flexible Income Fund
                  High-Yield Portfolio                                  Janus High-Yield Fund
                  Money Market Portfolio                              Janus Money Market Fund
</TABLE>

          * Prior to May 1, 1999 Capital Appreciation Portfolio was managed in a
            similar manner to Janus Olympus Fund.


          Although it is anticipated that each Portfolio and its corresponding
          retail fund will hold similar securities, differences in asset size,
          cash flow needs and other factors may result in differences in
          investment performance. The expenses of each Portfolio and its
          corresponding retail fund are expected to differ. The variable
          contract owner will also bear various insurance related costs at the
          insurance company level. You should review the accompanying separate
          account prospectus for a summary of fees and expenses.


GROWTH PORTFOLIOS

          This section takes a closer look at the investment objectives of each
          of the Growth Portfolios, their principal investment strategies and
          certain risks of investing in the Growth Portfolios. Strategies and
          policies that are noted as "fundamental" cannot be changed without a
          shareholder vote.

          Please carefully review the "Risks" section of this Prospectus on
          pages 24-27 for a discussion of risks associated with certain
          investment techniques. We've also included a Glossary with
          descriptions of investment terms used throughout this Prospectus.

INVESTMENT OBJECTIVES AND PRINCIPAL INVESTMENT STRATEGIES

DOMESTIC GROWTH PORTFOLIOS

          GROWTH PORTFOLIO
          Growth Portfolio seeks long-term growth of capital in a manner
          consistent with the preservation of capital. It pursues its objective
          by investing primarily in common stocks selected for their growth
          potential. Although the Portfolio can invest in companies of any size,
          it generally invests in larger, more established companies.

          AGGRESSIVE GROWTH PORTFOLIO
          Aggressive Growth Portfolio seeks long-term growth of capital. It
          pursues its objective by investing primarily in common stocks selected
          for their growth potential, and normally invests at least 50% of its
          equity assets in medium-sized companies. Medium-sized companies are
          those whose market capitalizations fall within the range of companies
          in the S&P MidCap 400 Index. Market capitalization is a commonly

 16 Janus Aspen Series
<PAGE>

          used measure of the size and value of a company. The market
          capitalizations within the Index will vary, but as of December 31,
          1998, they ranged from approximately $142 million to $73 billion.

          CAPITAL APPRECIATION PORTFOLIO
          Capital Appreciation Portfolio seeks long-term growth of capital. It
          pursues its objective by investing primarily in common stocks selected
          for their growth potential. The Portfolio may invest in companies of
          any size, from larger, well-established companies to smaller, emerging
          growth companies.

GLOBAL GROWTH PORTFOLIOS

          INTERNATIONAL GROWTH PORTFOLIO
          International Growth Portfolio seeks long-term growth of capital.
          Normally, the Portfolio pursues its objective by investing at least
          65% of its total assets in securities of issuers from at least five
          different countries, excluding the United States. Although the
          Portfolio intends to invest substantially all of its assets in issuers
          located outside the United States, it may at times invest in U.S.
          issuers and it may at times invest all of its assets in fewer than
          five countries or even a single country.

          WORLDWIDE GROWTH PORTFOLIO
          Worldwide Growth Portfolio seeks long-term growth of capital in a
          manner consistent with the preservation of capital. It pursues its
          objective by investing primarily in common stocks of companies of any
          size throughout the world. The Portfolio normally invests in issuers
          from at least five different countries, including the United States.
          The Portfolio may at times invest in fewer than five countries or even
          a single country.

The following questions and answers are designed to help you better understand
the Growth Portfolios' principal investment strategies.

1. HOW ARE COMMON STOCKS SELECTED?

          Each of the Portfolios may invest substantially all of its assets in
          common stocks if its portfolio manager believes that common stocks
          will appreciate in value. The portfolio managers generally take a
          "bottom up" approach to selecting companies. In other words, they seek
          to identify individual companies with earnings growth potential that
          may not be recognized by the market at large. They make this
          assessment by looking at companies one at a time, regardless of size,
          country of organization, place of principal business activity, or
          other similar selection criteria. Realization of income is not a
          significant consideration when choosing investments for the
          Portfolios. Income realized on the Portfolios' investments will be
          incidental to their objectives.

2. ARE THE SAME CRITERIA USED TO SELECT FOREIGN SECURITIES?

          Generally, yes. The portfolio managers seek companies that meet their
          selection criteria, regardless of where a company is located. Foreign
          securities are generally selected on a stock-by-stock basis without
          regard to any defined allocation among countries or geographic
          regions. However, certain factors such as expected levels of
          inflation, government policies influencing business conditions, the
          outlook for currency relationships, and prospects for economic growth
          among countries, regions or geographic areas may warrant greater
          consideration in selecting foreign securities. There are no
          limitations on the countries in which the Portfolios may invest and
          the Portfolios may at times have significant foreign exposure.

            Investment objectives, principal investment strategies and risks  17
<PAGE>

3. WHAT DOES "MARKET CAPITALIZATION" MEAN?

          Market capitalization is the most commonly used measure of the size
          and value of a company. It is computed by multiplying the current
          market price of a share of the company's stock by the total number of
          its shares outstanding. As noted previously, market capitalization is
          an important investment criteria for Aggressive Growth Portfolio.
          Although the other Growth Portfolios offered by this Prospectus do not
          emphasize companies of any particular size, Portfolios with a larger
          asset base are more likely to invest in larger, more established
          issuers.

COMBINATION PORTFOLIOS

          This section takes a closer look at the investment objectives of each
          of the Combination Portfolios, their principal investment strategies
          and certain risks of investing in the Combination Portfolios.
          Strategies and policies that are noted as "fundamental" cannot be
          changed without a shareholder vote.

          Please carefully review the "Risks" section of this Prospectus on
          pages 24-27 for a discussion of risks associated with certain
          investment techniques. We've also included a Glossary with
          descriptions of investment terms used throughout this Prospectus.

INVESTMENT OBJECTIVES AND PRINCIPAL INVESTMENT STRATEGIES

          BALANCED PORTFOLIO
          Balanced Portfolio seeks long-term capital growth, consistent with
          preservation of capital and balanced by current income. It pursues its
          objective by normally investing 40-60% of its assets in securities
          selected primarily for their growth potential and 40-60% of its assets
          in securities selected primarily for their income potential. This
          Portfolio normally invests at least 25% of its assets in fixed-income
          securities.

          EQUITY INCOME PORTFOLIO
          Equity Income Portfolio seeks current income and long-term growth of
          capital. It pursues its objective by normally emphasizing investments
          in common stock, and growth potential is a significant investment
          consideration. The Portfolio tries to provide a lower level of
          volatility than the S&P 500 Index. Normally, it invests at least 65%
          of its assets in income-producing equity securities including common
          and preferred stocks, warrants and securities that are convertible to
          common or preferred stocks.

          GROWTH AND INCOME PORTFOLIO
          Growth and Income Portfolio seeks long-term capital growth and current
          income. It normally emphasizes investments in common stocks. It will
          normally invest up to 75% of its assets in equity securities selected
          primarily for their growth potential, and at least 25% of its assets
          in securities the portfolio manager believes have income potential.
          Because of this investment strategy, the Portfolio is not designed for
          investors who need consistent income.

The following questions and answers are designed to help you better understand
the Combination Portfolios' principal investment strategies.

1. HOW DO THE COMBINATION PORTFOLIOS DIFFER FROM EACH OTHER?

          Growth and Income Portfolio places a greater emphasis on aggressive
          growth stocks and may derive a greater portion of its income from
          dividend-paying common stocks. Because of these factors, its NAV can
          be expected to fluctuate more than the other Combination Portfolios.
          Although Equity Income Portfolio

 18 Janus Aspen Series
<PAGE>

          invests substantially all of its assets in common stocks, it
          emphasizes investments in dividend-paying common stocks and other
          equity securities characterized by relatively greater price stability,
          and thus may be expected to be less volatile than Growth and Income
          Portfolio, as discussed in more detail below. Balanced Portfolio
          places a greater emphasis on the income component of its portfolio and
          invests to a greater degree in securities selected primarily for their
          income potential. As a result it is expected to be the least volatile
          of the Combination Portfolios.

2. HOW DOES EQUITY INCOME PORTFOLIO TRY TO LIMIT PORTFOLIO VOLATILITY?

          Equity Income Portfolio seeks to provide a lower level of volatility
          than the stock market at large, as measured by the S&P 500. The lower
          volatility sought by this Portfolio is expected to result primarily
          from investments in dividend-paying common stocks and other equity
          securities characterized by relatively greater price stability. The
          greater price stability sought by Equity Income Portfolio may be
          characteristic of companies that generate above average free cash
          flows. A company may use free cash flows for a number of purposes
          including commencing or increasing dividend payments, repurchasing its
          own stock or retiring outstanding debt. The portfolio manager also
          considers growth potential in selecting this Portfolio's securities
          and may hold securities selected solely for their growth potential.

3. HOW ARE COMMON STOCKS SELECTED FOR THE COMBINATION PORTFOLIOS IN COMPARISON
   TO THE GROWTH PORTFOLIOS?

          Because income is a part of the investment objective of the
          Combination Portfolios, a portfolio manager may consider
          dividend-paying characteristics to a greater degree in selecting
          common stocks for these Portfolios.

4. HOW ARE ASSETS ALLOCATED BETWEEN THE GROWTH AND INCOME COMPONENTS OF BALANCED
   PORTFOLIO'S AND GROWTH AND INCOME PORTFOLIO'S HOLDINGS?

          Balanced Portfolio and Growth and Income Portfolio shift assets
          between the growth and income components of their holdings based on
          the portfolio managers' analysis of relevant market, financial and
          economic conditions. If a portfolio manager believes that growth
          securities will provide better returns than the yields then available
          or expected on income-producing securities, that Portfolio will place
          a greater emphasis on the growth component.

5. WHAT TYPES OF SECURITIES MAKE UP THE GROWTH COMPONENT OF THE COMBINATION
   PORTFOLIOS' INVESTMENTS?

          The growth component of the Combination Portfolios' investments is
          expected to consist primarily of common stocks, but may also include
          warrants, preferred stocks or convertible securities selected
          primarily for their growth potential.

6. WHAT TYPES OF SECURITIES MAKE UP THE INCOME COMPONENT OF BALANCED PORTFOLIO'S
   AND GROWTH AND INCOME PORTFOLIO'S HOLDINGS?

          The income component of Balanced Portfolio and Growth and Income
          Portfolio will consist of securities that the portfolio managers
          believe have income potential. Such securities may include equity
          securities, convertible securities and all types of debt securities.
          Equity securities may be included in the income component of a
          Portfolio if they currently pay dividends or the portfolio manager
          believes they have the potential for either increasing their dividends
          or commencing dividends, if none are currently paid.

            Investment objectives, principal investment strategies and risks  19
<PAGE>

FIXED-INCOME PORTFOLIOS

          This section takes a closer look at the investment objectives of each
          of the Fixed-Income Portfolios, their principal investment strategies
          and certain risks of investing in the Fixed-Income Portfolios.
          Strategies and policies that are noted as "fundamental" cannot be
          changed without a shareholder vote.

          Please carefully review the "Risks" section of this Prospectus on
          pages 24-27 for a discussion of risks associated with certain
          investment techniques. We've also included a Glossary with
          descriptions of investment terms used throughout this Prospectus.

INVESTMENT OBJECTIVES AND PRINCIPAL INVESTMENT STRATEGIES

          In addition to considering economic factors such as the effect of
          interest rates on a Portfolio's investments, the portfolio managers
          apply a "bottom up" approach in choosing investments. In other words,
          they look mostly for income-producing securities that meet their
          investment criteria one at a time. If a portfolio manager is unable to
          find such investments, much of a Portfolio's assets may be in cash or
          similar investments.

          FLEXIBLE INCOME PORTFOLIO
          Flexible Income Portfolio seeks to obtain maximum total return,
          consistent with preservation of capital. It pursues its objective by
          primarily investing in a wide variety of income-producing securities
          such as corporate bonds and notes, government securities and preferred
          stock. As a fundamental policy, the Portfolio will invest at least 80%
          of its assets in income-producing securities. The Portfolio may own an
          unlimited amount of high-yield/high-risk securities, and these may be
          a big part of the portfolio. This Portfolio generates total return
          from a combination of current income and capital appreciation, but
          income is usually the dominant portion.

          HIGH-YIELD PORTFOLIO
          High-Yield Portfolio seeks to obtain high current income. Capital
          appreciation is a secondary objective when consistent with its primary
          objective. It pursues its objectives by normally investing 65% of its
          assets in high-yield/high-risk fixed-income securities, and may at
          times invest all of its assets in these securities.

The following questions and answers are designed to help you better understand
the Fixed-Income Portfolios' principal investment strategies.

1. HOW DO INTEREST RATES AFFECT THE VALUE OF MY INVESTMENT?

          Generally, a fixed-income security will increase in value when
          interest rates fall and decrease in value when interest rates rise.
          Longer-term securities are generally more sensitive to interest rate
          changes than shorter-term securities, but they generally offer higher
          yields to compensate investors for the associated risks. High-yield
          bond prices are generally less directly responsive to interest rate
          changes than investment grade issues and may not always follow this
          pattern. A bond fund's average-weighted effective maturity and its
          duration are measures of how the fund may react to interest rate
          changes.

2. HOW DO THE FIXED-INCOME PORTFOLIOS MANAGE INTEREST RATE RISK?

          Each Fixed-Income Portfolio may vary the average-weighted effective
          maturity of its assets to reflect its portfolio manager's analysis of
          interest rate trends and other factors. A Portfolio's average-weighted
          effective maturity will tend to be shorter when the portfolio manager
          expects interest rates to rise and longer when its portfolio manager
          expects interest rates to fall. The Portfolios may also use futures,
          options and other derivatives to manage interest rate risks.

 20 Janus Aspen Series
<PAGE>

3. WHAT IS MEANT BY A PORTFOLIO'S "AVERAGE-WEIGHTED EFFECTIVE MATURITY"?

          The stated maturity of a bond is the date when the issuer must repay
          the bond's entire principal value to an investor. Some types of bonds
          may also have an "effective maturity" that is shorter than the stated
          date due to prepayment or call provisions. Securities without
          prepayment or call provisions generally have an effective maturity
          equal to their stated maturity. Dollar-weighted effective maturity is
          calculated by averaging the effective maturity of bonds held by a
          Portfolio with each effective maturity "weighted" according to the
          percentage of net assets that it represents.

4. WHAT IS MEANT BY A PORTFOLIO'S "DURATION"?

          A bond's duration indicates the time it will take an investor to
          recoup his investment. Unlike average maturity, duration reflects both
          principal and interest payments. Generally, the higher the coupon rate
          on a bond, the lower its duration will be. The duration of a bond
          portfolio is calculated by averaging the duration of bonds held by a
          fund with each duration "weighted" according to the percentage of net
          assets that it represents. Because duration accounts for interest
          payments, a Portfolio's duration is usually shorter than its average
          maturity.

5. WHAT IS A HIGH-YIELD/HIGH-RISK SECURITY?

          A high-yield/high-risk security (also called a "junk" bond) is a debt
          security rated below investment grade by major rating agencies (i.e.,
          BB or lower by Standard & Poor's or Ba or lower by Moody's) or an
          unrated bond of similar quality. It presents greater risk of default
          (the failure to make timely interest and principal payments) than
          higher quality bonds.

GENERAL PORTFOLIO POLICIES OF THE PORTFOLIOS OTHER THAN MONEY MARKET PORTFOLIO

          Unless otherwise stated, each of the following policies applies to all
          of the Portfolios other than Money Market Portfolio. The percentage
          limitations included in these policies and elsewhere in this
          Prospectus apply at the time of purchase of the security. So, for
          example, if a Portfolio exceeds a limit as a result of market
          fluctuations or the sale of other securities, it will not be required
          to dispose of any securities.

          CASH POSITION
          When a portfolio manager believes that market conditions are
          unfavorable for profitable investing, or when he or she is otherwise
          unable to locate attractive investment opportunities, the Portfolios'
          cash or similar investments may increase. In other words, the
          Portfolios do not always stay fully invested in stocks and bonds. Cash
          or similar investments generally are a residual - they represent the
          assets that remain after a portfolio manager has committed available
          assets to desirable investment opportunities. However, a portfolio
          manager may also temporarily increase a Portfolio's cash position to
          protect its assets or maintain liquidity. Partly because the portfolio
          managers act independently of each other, the cash positions of the
          Portfolios may vary significantly.

          When a Portfolio's investments in cash or similar investments
          increase, it may not participate in market advances or declines to the
          same extent that it would if the Portfolio remained more fully
          invested in stocks or bonds.

          OTHER TYPES OF INVESTMENTS
          The Growth and Global Growth Portfolios invest primarily in domestic
          and foreign equity securities, which may include preferred stocks,
          common stocks, warrants and securities convertible into common or
          preferred stocks. The Combination Portfolios also invest in domestic
          and foreign equity securities with

            Investment objectives, principal investment strategies and risks  21
<PAGE>

          varying degrees of emphasis on income. The Portfolios may also invest
          to a lesser degree in other types of securities. These securities
          (which are described in the Glossary) may include:

          - debt securities

          - indexed/structured securities

          - high-yield/high-risk securities (less than 35% of each Portfolio's
            assets)

          - options, futures, forwards and other types of derivatives for
            hedging purposes or for non-hedging purposes such as seeking to
            enhance return

          - securities purchased on a when-issued, delayed delivery or forward
            commitment basis

          The Fixed-Income Portfolios invest primarily in fixed-income
          securities which may include corporate bonds and notes, government
          securities, preferred stock, high-yield/high-risk fixed-income
          securities and municipal obligations. The Portfolios may also invest
          to a lesser degree in other types of securities. These securities
          (which are described in the Glossary) may include:

          - common stocks

          - mortgage- and asset-backed securities

          - zero coupon, pay-in-kind and step coupon securities

          - options, futures, forwards and other types of derivatives for
            hedging purposes or for non-hedging purposes such as seeking to
            enhance return

          - securities purchased on a when-issued, delayed delivery or forward
            commitment basis

          ILLIQUID INVESTMENTS
          Each Portfolio may invest up to 15% of its net assets in illiquid
          investments. An illiquid investment is a security or other position
          that cannot be disposed of quickly in the normal course of business.
          For example, some securities are not registered under U.S. securities
          laws and cannot be sold to the U.S. public because of SEC regulations
          (these are known as "restricted securities"). Under procedures adopted
          by the Portfolios' Trustees, certain restricted securities may be
          deemed liquid, and will not be counted toward this 15% limit.

          FOREIGN SECURITIES
          The Portfolios may invest without limit in foreign equity and debt
          securities. The Portfolios may invest directly in foreign securities
          denominated in a foreign currency and not publicly traded in the
          United States. Other ways of investing in foreign securities include
          depositary receipts or shares, and passive foreign investment
          companies.

          SPECIAL SITUATIONS
          Each Portfolio may invest in special situations. A special situation
          arises when, in the opinion of a Portfolio's manager, the securities
          of a particular issuer will be recognized and appreciate in value due
          to a specific development with respect to that issuer. Developments
          creating a special situation might include, among others, a new
          product or process, a technological breakthrough, a management change
          or other extraordinary corporate event, or differences in market
          supply of and demand for the security. A Portfolio's performance could
          suffer if the anticipated development in a "special situation"
          investment does not occur or does not attract the expected attention.

 22 Janus Aspen Series
<PAGE>

          PORTFOLIO TURNOVER
          The Portfolios generally intend to purchase securities for long-term
          investment although, to a limited extent, a Portfolio may purchase
          securities in anticipation of relatively short-term price gains.
          Short-term transactions may also result from liquidity needs,
          securities having reached a price or yield objective, changes in
          interest rates or the credit standing of an issuer, or by reason of
          economic or other developments not foreseen at the time of the
          investment decision. A Portfolio may also sell one security and
          simultaneously purchase the same or a comparable security to take
          advantage of short-term differentials in bond yields or securities
          prices. Changes are made in a Portfolio's holdings whenever its
          portfolio manager believes such changes are desirable. Portfolio
          turnover rates are generally not a factor in making buy and sell
          decisions.

          Increased portfolio turnover may result in higher costs for brokerage
          commissions, dealer mark-ups and other transaction costs and may also
          result in taxable capital gains. Higher costs associated with
          increased portfolio turnover may offset gains in a Portfolio's
          performance.

            Investment objectives, principal investment strategies and risks  23
<PAGE>

RISKS FOR GROWTH, GLOBAL GROWTH AND COMBINATION PORTFOLIOS

          Because the Portfolios may invest substantially all of their assets in
          common stocks, the main risk is the risk that the value of the stocks
          they hold might decrease in response to the activities of an
          individual company or in response to general market and/or economic
          conditions. If this occurs, a Portfolio's share price may also
          decrease. A Portfolio's performance may also be affected by risks
          specific to certain types of investments, such as foreign securities,
          derivative investments, non-investment grade debt securities or
          companies with relatively small market capitalizations.

The following questions and answers are designed to help you better understand
some of the risks of investing in the Growth, Global Growth and Combination
Portfolios.

1. THE PORTFOLIOS MAY INVEST IN SMALLER OR NEWER COMPANIES. DOES THIS CREATE ANY
   SPECIAL RISKS?

          Smaller or newer companies may suffer more significant losses as well
          as realize more substantial growth than larger or more established
          issuers because they may lack depth of management, be unable to
          generate funds necessary for growth or potential development, or be
          developing or marketing new products or services for which markets are
          not yet established and may never become established. In addition,
          such companies may be insignificant factors in their industries and
          may become subject to intense competition from larger or more
          established companies. Securities of smaller or newer companies may
          have more limited trading markets than the markets for securities of
          larger or more established issuers, and may be subject to wide price
          fluctuations. Investments in such companies tend to be more volatile
          and somewhat more speculative.

2. HOW DOES THE NONDIVERSIFIED STATUS OF AGGRESSIVE GROWTH PORTFOLIO AND CAPITAL
   APPRECIATION PORTFOLIO AFFECT THEIR RISK?

          Diversification is a way to reduce risk by investing in a broad range
          of stocks or other securities. A "nondiversified" portfolio has the
          ability to take larger positions in a smaller number of issuers.
          Because the appreciation or depreciation of a single stock may have a
          greater impact on the NAV of a nondiversified portfolio, its share
          price can be expected to fluctuate more than a comparable diversified
          portfolio. This fluctuation, if significant, may affect the
          performance of a Portfolio.

 24 Janus Aspen Series
<PAGE>

RISKS FOR FIXED-INCOME PORTFOLIOS

          Because the Portfolios invest substantially all of their assets in
          fixed-income securities, they are subject to risks such as credit or
          default risks, and decreased value due to interest rate increases. A
          Portfolio's performance may also be affected by risks to certain types
          of investments, such as foreign securities and derivative instruments.

The following questions and answers are designed to help you better understand
some of the risks of investing in the Fixed-Income Portfolios.

1. HOW DO THE FIXED-INCOME PORTFOLIOS DIFFER FROM EACH OTHER IN TERMS OF PRIMARY
   INVESTMENT TYPE, CREDIT RISK AND INTEREST RATE RISK?

          Flexible Income Portfolio and High-Yield Portfolio invest primarily in
          corporate bonds. High-Yield Portfolio's credit risk is generally
          higher than Flexible Income Portfolio. Flexible Income Portfolio's
          interest rate risk is generally higher than High-Yield Portfolio.

2. WHAT IS MEANT BY "CREDIT QUALITY" AND WHAT ARE THE RISKS ASSOCIATED WITH IT?

          Credit quality measures the likelihood that the issuer will meet its
          obligations on a bond. One of the fundamental risks associated with
          all fixed-income funds is credit risk, which is the risk that an
          issuer will be unable to make principal and interest payments when
          due. U.S. government securities are generally considered to be the
          safest type of investment in terms of credit risk. Municipal
          obligations generally rank between U.S. government securities and
          corporate debt securities in terms of credit safety. Corporate debt
          securities, particularly those rated below investment grade, present
          the highest credit risk.

3. HOW IS CREDIT QUALITY MEASURED?

          Ratings published by nationally recognized statistical rating agencies
          such as Standard & Poor's Ratings Service and Moody's Investors
          Service, Inc. are widely accepted measures of credit risk. The lower a
          bond issue is rated by an agency, the more credit risk it is
          considered to represent. Lower rated bonds generally pay higher yields
          to compensate investors for the associated risk. Please refer to
          "Explanation of Rating Categories" on page 46 for a description of
          rating categories.

RISKS COMMON TO ALL NON-MONEY MARKET PORTFOLIOS

The following questions and answers discuss risks that apply to all Portfolios
other than Money Market Portfolio.

1. HOW COULD THE PORTFOLIOS' INVESTMENTS IN FOREIGN SECURITIES AFFECT THEIR
   PERFORMANCE?

          The Portfolios may invest without limit in foreign securities either
          indirectly (e.g., depositary receipts) or directly in foreign markets.
          Investments in foreign securities, including those of foreign
          governments, may involve greater risks than investing in domestic
          securities because the Portfolios' performance may depend on issues
          other than the performance of a particular company. These issues
          include:

          - CURRENCY RISK. As long as a Portfolio holds a foreign security, its
            value will be affected by the value of the local currency relative
            to the U.S. dollar. When a Portfolio sells a foreign denominated
            security, its value may be worth less in U.S. dollars even if the
            security increases in value in its home country. U.S. dollar
            denominated securities of foreign issuers may also be affected by
            currency risk.

          - POLITICAL AND ECONOMIC RISK. Foreign investments may be subject to
            heightened political and economic risks, particularly in emerging
            markets which may have relatively unstable governments, immature
            economic structures, national policies restricting investments by
            foreigners, different legal systems, and economies based on only a
            few industries. In some countries, there is the risk that the
            government may

            Investment objectives, principal investment strategies and risks  25
<PAGE>

            take over the assets or operations of a company or that the
            government may impose taxes or limits on the removal of a
            Portfolio's assets from that country.

          - REGULATORY RISK. There may be less government supervision of foreign
            markets. As a result, foreign issuers may not be subject to the
            uniform accounting, auditing and financial reporting standards and
            practices applicable to domestic issuers and there may be less
            publicly available information about foreign issuers.

          - MARKET RISK. Foreign securities markets, particularly those of
            emerging market countries, may be less liquid and more volatile than
            domestic markets. Certain markets may require payment for securities
            before delivery and delays may be encountered in settling securities
            transactions. In some foreign markets, there may not be protection
            against failure by other parties to complete transactions.

          - TRANSACTION COSTS. Costs of buying, selling and holding foreign
            securities, including brokerage, tax and custody costs, may be
            higher than those involved in domestic transactions.

2. ARE THERE SPECIAL RISKS ASSOCIATED WITH INVESTMENTS IN HIGH-YIELD/HIGH-RISK
   SECURITIES?

          High-yield/high-risk securities (or "junk" bonds) are securities rated
          below investment grade by the primary rating agencies such as Standard
          & Poor's and Moody's. The value of lower quality securities generally
          is more dependent on credit risk, or the ability of the issuer to meet
          interest and principal payments, than investment grade debt
          securities. Issuers of high-yield securities may not be as strong
          financially as those issuing bonds with higher credit ratings and are
          more vulnerable to real or perceived economic changes, political
          changes or adverse developments specific to the issuer.

          The junk bond market can experience sudden and sharp price swings.
          Because Flexible Income Portfolio and High-Yield Portfolio may invest
          a significant portion of their assets in high-yield/high-risk
          securities, investors should be willing to tolerate a corresponding
          increase in the risk of significant and sudden changes in NAV.

          Please refer to "Explanation of Rating Categories" on page 46 for a
          description of bond rating categories.

3. HOW DO THE PORTFOLIOS TRY TO REDUCE RISK?

          The Portfolios may use futures, options and other derivative
          instruments to "hedge" or protect their portfolios from adverse
          movements in securities prices and interest rates. The Portfolios may
          also use a variety of currency hedging techniques, including forward
          currency contracts, to manage exchange rate risk. The portfolio
          managers believe the use of these instruments will benefit the
          Portfolios. However, a Portfolio's performance could be worse than if
          the Portfolio had not used such instruments if a portfolio manager's
          judgement proves incorrect. Risks associated with the use of
          derivative instruments are described in the SAI.

4. I'VE HEARD A LOT ABOUT HOW THE CHANGE TO THE YEAR 2000 COULD AFFECT COMPUTER
   SYSTEMS. DOES THIS CREATE ANY SPECIAL RISKS?

          The portfolio managers carefully research each potential investment
          before making an investment decision and, among other things, consider
          Year 2000 readiness when selecting portfolio holdings. However, there
          is no guarantee that the information a portfolio manager receives
          regarding a company's Year 2000 readiness is completely accurate. If a
          company has not satisfactorily addressed Year 2000 issues, the
          Portfolio's performance could suffer.

 26 Janus Aspen Series
<PAGE>

MONEY MARKET PORTFOLIO

          This section takes a closer look at the investment objective of Money
          Market Portfolio, its principal investment strategies and certain
          risks of investing in the Portfolio. Strategies and policies that are
          noted as "fundamental" cannot be changed without a shareholder vote.

          Money Market Portfolio is subject to certain specific SEC rule
          requirements. Among other things, the Portfolio is limited to
          investing in U.S. dollar-denominated instruments with a remaining
          maturity of 397 days or less (as calculated pursuant to Rule 2a-7
          under the 1940 Act).

INVESTMENT OBJECTIVE AND PRINCIPAL INVESTMENT STRATEGIES

          Money Market Portfolio seeks maximum current income to the extent
          consistent with stability of capital. It pursues its objective by
          investing primarily in high quality debt obligations and obligations
          of financial institutions. Debt obligations may include commercial
          paper, notes and bonds, and variable amount master demand notes.
          Obligations of financial institutions include certificates of deposit
          and time deposits.

          Money Market Portfolio will:

          - invest in high quality, short-term money market instruments that
            present minimal credit risks, as determined by Janus Capital

          - invest only in U.S. dollar-denominated instruments that have a
            remaining maturity of 397 days or less (as calculated pursuant to
            Rule 2a-7 under the 1940 Act)

          - maintain a dollar-weighted average portfolio maturity of 90 days or
            less

TYPES OF INVESTMENTS

          Money Market Portfolio invests primarily in:

          - high quality debt obligations

          - obligations of financial institutions

          The Portfolio may also invest (to a lesser degree) in:

          - U.S. Government Securities (securities issued or guaranteed by the
            U.S. government, its agencies and instrumentalities)

          - municipal securities

          DEBT OBLIGATIONS

          The Portfolio may invest in debt obligations of domestic issuers. Debt
          obligations include:

          - commercial paper

          - notes and bonds

          - variable amount master demand notes (the payment obligations on
            these instruments may be backed by securities, swap agreements or
            other assets, by a guarantee of a third party or solely by the
            unsecured promise of the issuer to make payments when due)

          - privately issued commercial paper or other securities that are
            restricted as to disposition under the federal securities laws

            Investment objectives, principal investment strategies and risks  27
<PAGE>

          OBLIGATIONS OF FINANCIAL INSTITUTIONS

          Examples of obligations of financial institutions include:

          - negotiable certificates of deposit, bankers' acceptances, time
            deposits and other obligations of U.S. banks (including savings and
            loan associations) having total assets in excess of one billion
            dollars and U.S. branches of foreign banks having total assets in
            excess of ten billion dollars

          - Eurodollar and Yankee bank obligations (Eurodollar bank obligations
            are dollar-denominated certificates of deposit or time deposits
            issued outside the U.S. capital markets by foreign branches of U.S.
            banks and by foreign banks. Yankee bank obligations are
            dollar-denominated obligations issued in the U.S. capital markets by
            foreign banks)

          - other U.S. dollar-denominated obligations of foreign banks having
            total assets in excess of ten billion dollars that Janus Capital
            believes are of an investment quality comparable to obligations of
            U.S. banks in which the Portfolio may invest

          Foreign, Eurodollar (and to a limited extent, Yankee) bank obligations
          are subject to certain sovereign risks. One such risk is the
          possibility that a foreign government might prevent dollar-denominated
          funds from flowing across its borders. Other risks include: adverse
          political and economic developments in a foreign country; the extent
          and quality of government regulation of financial markets and
          institutions; the imposition of foreign withholding taxes; and
          expropriation or nationalization of foreign issuers.

INVESTMENT TECHNIQUES

          The following is a description of other investment techniques that
          Money Market Portfolio may use:

          PARTICIPATION INTERESTS
          A participation interest gives Money Market Portfolio a proportionate,
          undivided interest in underlying debt securities and sometimes carries
          a demand feature.

          DEMAND FEATURES
          Demand features give Money Market Portfolio the right to resell
          securities at specified periods prior to their maturity dates. Demand
          features may shorten the life of a variable or floating rate security,
          enhance the instrument's credit quality and provide a source of
          liquidity.

          Demand features are often issued by third party financial
          institutions, generally domestic and foreign banks. Accordingly, the
          credit quality and liquidity of Money Market Portfolio's investments
          may be dependent in part on the credit quality of the banks supporting
          Money Market Portfolio's investments. This will result in exposure to
          risks pertaining to the banking industry, including the foreign
          banking industry. Brokerage firms and insurance companies also provide
          certain liquidity and credit support.

          VARIABLE AND FLOATING RATE SECURITIES
          Money Market Portfolio may invest in securities which have variable or
          floating rates of interest. These securities pay interest at rates
          that are adjusted periodically according to a specified formula,
          usually with reference to an interest rate index or market interest
          rate. Variable and floating rate securities are subject to changes in
          value based on changes in market interest rates or changes in the
          issuer's or guarantor's creditworthiness.

 28 Janus Aspen Series
<PAGE>

          MORTGAGE- AND ASSET-BACKED SECURITIES
          Money Market Portfolio may purchase fixed or variable rate
          mortgage-backed securities issued by the Government National Mortgage
          Association, Federal National Mortgage Association, the Federal Home
          Loan Mortgage Corporation, or other governmental or government-related
          entity. The Portfolio may purchase other mortgage- and asset-backed
          securities including securities backed by automobile loans, equipment
          leases or credit card receivables.

          Unlike traditional debt instruments, payments on these securities
          include both interest and a partial payment of principal. Prepayments
          of the principal of underlying loans may shorten the effective
          maturities of these securities and may result in the Portfolio having
          to reinvest proceeds at a lower interest rate.

          REPURCHASE AGREEMENTS
          Money Market Portfolio may enter into collateralized repurchase
          agreements. Repurchase agreements are transactions in which the
          Portfolio purchases securities and simultaneously commits to resell
          those securities to the seller at an agreed-upon price on an
          agreed-upon future date. The repurchase price reflects a market rate
          of interest and is collateralized by cash or securities.

          If the seller of the securities underlying a repurchase agreement
          fails to pay the agreed resale price on the agreed delivery date,
          Money Market Portfolio may incur costs in disposing of the collateral
          and may experience losses if there is any delay in its ability to do
          so.

            Investment objectives, principal investment strategies and risks  29
<PAGE>
Management of the portfolios

INVESTMENT ADVISER

          Janus Capital, 100 Fillmore Street, Denver, Colorado 80206-4928, is
          the investment adviser to each of the Portfolios and is responsible
          for the day-to-day management of the investment portfolios and other
          business affairs of the Portfolios.

          Janus Capital began serving as investment adviser to Janus Fund in
          1970 and currently serves as investment adviser to all of the Janus
          retail funds, acts as sub-adviser for a number of private-label mutual
          funds and provides separate account advisory services for
          institutional accounts.

          Janus Capital furnishes continuous advice and recommendations
          concerning each Portfolio's investments. Janus Capital also furnishes
          certain administrative, compliance and accounting services for the
          Portfolios, and may be reimbursed by the Portfolios for its costs in
          providing those services. In addition, Janus Capital employees serve
          as officers of the Trust and Janus Capital provides office space for
          the Portfolios and pays the salaries, fees and expenses of all
          Portfolio officers and those Trustees who are affiliated with Janus
          Capital.


          Participating insurance companies that purchase the Portfolios' Shares
          may perform administrative services relating to the Portfolios and
          Janus Capital or the Portfolios may pay those companies for such
          services.


MANAGEMENT EXPENSES AND EXPENSE LIMITS


          Each Portfolio pays Janus Capital a management fee which is calculated
          daily. The advisory agreement with each Portfolio spells out the
          management fee and other expenses that the Portfolios must pay. Each
          of the Portfolios is subject to the following management fee schedule
          (expressed as an annual rate). In addition, the Shares of each
          Portfolio incur expenses not assumed by Janus Capital, including the
          distribution fee, transfer agent and custodian fees and expenses,
          legal and auditing fees, printing and mailing costs of sending reports
          and other information to existing shareholders, and independent
          Trustees' fees and expenses.


<TABLE>
<CAPTION>
                                                          Average Daily
                                                           Net Assets         Annual Rate      Expense Limit
     Fee Schedule                                         of Portfolio       Percentage (%)    Percentage (%)
- ------------------------------------------------------------------------------------------------------------------
<S>                                                     <C>                  <C>               <C>
     Growth Portfolio
     Aggressive Growth Portfolio                        First $300 Million        0.75               N/A(1)
     Capital Appreciation Portfolio                     Next $200 Million         0.70
     International Growth Portfolio                     Over $500 Million         0.65
     Worldwide Growth Portfolio
     Balanced Portfolio
- ------------------------------------------------------------------------------------------------------------------
     Equity Income Portfolio                            First $300 Million        0.75
     Growth and Income Portfolio                        Next $200 Million         0.70              1.25(1)(2)
                                                        Over $500 Million         0.65
- ------------------------------------------------------------------------------------------------------------------
     Flexible Income Portfolio                          First $300 Million        0.65              1.00(2)
                                                        Over $300 Million         0.55
- ------------------------------------------------------------------------------------------------------------------
     High-Yield Portfolio                               First $300 Million        0.75              1.00(2)
                                                        Over $300 Million         0.65
- ------------------------------------------------------------------------------------------------------------------
     Money Market Portfolio                             All Asset Levels          0.25              0.50(2)
- ------------------------------------------------------------------------------------------------------------------
</TABLE>


(1) Janus Capital has agreed to reduce Growth, Aggressive Growth, Capital
    Appreciation, International Growth, Worldwide Growth, Balanced, Equity
    Income and Growth and Income Portfolio's management fee to the extent that
    such fee exceeds the effective rate of the Janus retail fund corresponding
    to such Portfolio. Janus Capital has agreed to continue such waivers until
    at least the next annual renewal of the advisory agreements. The effective
    rate is the management fee calculated by the corresponding retail fund as of
    the last day of each calendar quarter (expressed as an annual rate). The
    effective rates of Janus Fund, Janus Enterprise Fund, Janus Twenty Fund,
    Janus Overseas Fund, Janus Worldwide Fund, Janus Balanced Fund, Janus Equity
    Income Fund, and Janus Growth and Income Fund were 0.65%, 0.67%, 0.65%,
    0.66%, 0.65%, 0.67%, 0.71% and 0.66%, respectively, for the quarter ended
    September 30, 1999.


(2) Janus Capital has agreed to limit the Portfolios' expenses as indicated
    until at least the next annual renewal of the advisory contracts. The
    distribution fee described on page 34 is not included in the expense limit.


 30 Janus Aspen Series
<PAGE>

INVESTMENT PERSONNEL

PORTFOLIO MANAGERS

LAURENCE J. CHANG
- --------------------------------------------------------------------------------

            is Executive Vice President and co-manager of International
            Growth Portfolio and Worldwide Growth Portfolio which he has
            co-managed since May 1998 and December 31, 1999, respectively. He
            has also co-managed Janus Overseas Fund and Janus Worldwide Fund
            since April 1998 and September 1999, respectively. He served as
            assistant portfolio manager for these funds since 1996. Mr. Chang
            joined Janus Capital in 1993 after receiving a Masters Degree in
            Political Science from Stanford University. He is a Chartered
            Financial Analyst.


DAVID J. CORKINS
- --------------------------------------------------------------------------------
            is Executive Vice President and portfolio manager of Growth and
            Income Portfolio which he has managed since its inception. He is
            Executive Vice President and portfolio manager of Janus Growth
            and Income Fund which he has managed since August 1997. He
            previously served as an assistant portfolio manager of Janus
            Mercury Fund. He joined Janus in 1995 as a research analyst
            specializing in domestic financial services companies and a
            variety of foreign industries. Prior to joining Janus, he was the
            Chief Financial Officer of Chase U.S. Consumer Services, Inc., a
            Chase Manhattan mortgage business. He holds a Bachelor of Arts in
            English and Russian from Dartmouth and received his Master of
            Business Administration from Columbia University in 1993.


JAMES P. GOFF

- --------------------------------------------------------------------------------
            is Executive Vice President and portfolio manager of Aggressive
            Growth Portfolio, which he has managed since inception. Mr. Goff
            joined Janus Capital in 1988 and has managed Janus Enterprise
            Fund since its inception. Mr. Goff co-managed or managed Janus
            Venture Fund from December 1993 to February 1, 1997. He holds a
            Bachelor of Arts in Economics from Yale University and is a
            Chartered Financial Analyst.

HELEN YOUNG HAYES
- --------------------------------------------------------------------------------

            is Executive Vice President and co-manager of Worldwide Growth
            Portfolio and International Growth Portfolio, which she has
            managed or co-managed since inception. Ms. Hayes joined Janus
            Capital in 1987 and has managed or co-managed Janus Worldwide
            Fund and Janus Overseas Fund since their inceptions. She holds a
            Bachelor of Arts in Economics from Yale University and is a
            Chartered Financial Analyst.


                                                Management of the portfolios  31
<PAGE>

SHARON S. PICHLER
- --------------------------------------------------------------------------------
            is Executive Vice President and portfolio manager of Money Market
            Portfolio, which she has managed since inception. She also has
            managed Janus Money Market Fund, Janus Government Money Market
            Fund and Janus Tax-Exempt Money Market Fund since inception. She
            holds a Bachelor of Arts in Economics from Michigan State
            University and a Master of Business Administration from the
            University of Texas at San Antonio. Ms. Pichler is a Chartered
            Financial Analyst.


KAREN L. REIDY

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

            is Executive Vice President and portfolio manager of Balanced
            Portfolio and Equity Income Portfolio as of January 2000. She
            also manages Janus Balanced Fund and Equity Income Fund as of
            January 2000. She is also assistant portfolio manager of Janus
            Fund. Prior to joining Janus Capital in 1995, she worked for
            Price Waterhouse in the Mergers and Acquisitions area, performing
            corporate due diligence, and as an audit senior, analyzing
            financials for corporate clients. She received an undergraduate
            degree in Accounting from the University of Colorado. She is a
            Chartered Financial Analyst.



BLAINE P. ROLLINS

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

            is Executive Vice President and portfolio manager of Growth
            Portfolio as of January 2000. He previously managed Balanced
            Portfolio from May 1996 to December 1999 and Equity Income
            Portfolio from its inception to December 1999. Mr. Rollins joined
            Janus Capital in 1990 and has managed Janus Fund since January
            2000, Janus Balanced Fund from January 1996 until December 1999
            and Janus Equity Income Fund from inception until December 1999.
            He was an assistant portfolio manager of Janus Fund from January
            1994 until December 1999. He gained experience as a fixed-income
            trader and equity research analyst prior to managing Balanced
            Portfolio. He holds a Bachelor of Science in Finance from the
            University of Colorado and is a Chartered Financial Analyst.


SANDY R. RUFENACHT
- --------------------------------------------------------------------------------
            is Executive Vice President and portfolio manager of High-Yield
            Portfolio, which he has managed or co-managed since October 1996.
            He previously co-managed Flexible Income Portfolio from January
            1997 to May 1998. Mr. Rufenacht joined Janus Capital in 1990 and
            has managed Janus Short-Term Bond Fund since January 1996. He is
            also the portfolio manager of Janus High-Yield Fund. He
            previously co-managed Janus Flexible Income Fund from June 1996
            to February 1998. He holds a Bachelor of Arts in Business from
            the University of Northern Colorado.

SCOTT W. SCHOELZEL
- --------------------------------------------------------------------------------
            is Executive Vice President and portfolio manager of Capital
            Appreciation Portfolio, which he has managed since its inception.
            He is portfolio manager of Janus Twenty Fund, which he has
            managed since August 1997. He previously managed Janus Olympus
            Fund from its inception to August 1997. Mr. Schoelzel joined
            Janus Capital in January 1994. He holds a Bachelor of Arts in
            Business from Colorado College.

 32 Janus Aspen Series
<PAGE>

RONALD V. SPEAKER
- --------------------------------------------------------------------------------
            is Executive Vice President and portfolio manager of Flexible
            Income Portfolio which he has managed or co-managed since its
            inception. He previously served as co-manager of High-Yield
            Portfolio, from its inception to May 1998. He managed Short-Term
            Bond Portfolio from its inception through April 1996. Mr. Speaker
            joined Janus Capital in 1986. He has managed or co-managed Janus
            Flexible Income Fund since December 1991 and previously managed
            both Janus Short-Term Bond Fund and Janus Federal Tax-Exempt Fund
            from inception through December 1995. He previously managed or
            co-managed Janus High-Yield Fund from its inception to February
            1998. He holds a Bachelor of Arts in Finance from the University
            of Colorado and is a Chartered Financial Analyst.

            In January 1997, Mr. Speaker settled an SEC administrative action
            involving two personal trades made by him in January of 1993.
            Without admitting or denying the allegations, Mr. Speaker agreed
            to civil money penalty, disgorgement, and interest payments
            totaling $37,199 and to a 90-day suspension which ended on April
            25, 1997.

ASSISTANT PORTFOLIO MANAGERS


DAVID C. DECKER

- --------------------------------------------------------------------------------
            is an assistant portfolio manager of Growth Portfolio. He is also
            an assistant portfolio manager of Janus Fund. He is Executive
            Vice President and portfolio manager of Janus Special Situations
            Fund. Mr. Decker received a Masters of Business Administration in
            Finance from the Fuqua School of Business at Duke University and
            a Bachelor's Degree in Economics and Political Science from Tufts
            University. He is a Chartered Financial Analyst.

RON SACHS
- --------------------------------------------------------------------------------
            is an assistant portfolio manager of Aggressive Growth Portfolio.
            Mr. Sachs joined Janus Capital in 1996 as a research analyst.
            Prior to coming to Janus, he worked as a consultant for Bain &
            Company and as an attorney for Willkie, Farr & Gallagher. Mr.
            Sachs graduated from Princeton cum laude with an undergraduate
            degree in economics. He obtained his law degree from the
            University of Michigan. Mr. Sachs is a Chartered Financial
            Analyst.


JOHN H. SCHREIBER

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

            is an assistant portfolio manager of Growth Portfolio, Balanced
            Portfolio and Equity Income Portfolio. Mr. Schreiber joined Janus
            in 1997 as an equity research analyst. Prior to coming to Janus
            he was an equity analyst with Fidelity Investments. Mr. Schreiber
            holds a Bachelor of Science degree in mechanical engineering from
            the University of Washington and a Master of Business
            Administration from Harvard University. He is a Chartered
            Financial Analyst.


                                                Management of the portfolios  33
<PAGE>
Other information

          CLASSES OF SHARES


          Each Portfolio offers three classes of shares, one of which, the
          Service Shares, are offered pursuant to this prospectus. The Shares
          offered by this prospectus are available only in connection with
          investment in and payments under variable insurance contracts as well
          as certain qualified retirement plans. Because the expenses of each
          class may differ, the performance of each class is expected to differ.
          If you would like additional information about either the
          Institutional Shares or the Retirement Shares, please call
          1-800-525-0020.



          DISTRIBUTION FEE



          Under a distribution and service plan adopted in accordance with Rule
          12b-1 under the 1940 Act, the Shares may pay Janus Distributors, Inc.,
          the Trust's distributor, a fee at an annual rate of up to 0.25% of the
          average daily net assets of the Shares of a Portfolio. Under the terms
          of the Plan, the Trust is authorized to make payments to Janus
          Distributors for remittance to insurance companies and qualified plan
          service providers as compensation for distribution and shareholder
          servicing performed by such entities. Because 12b-1 fees are paid out
          of the Service Shares' assets on an ongoing basis, they will increase
          the cost of your investment and may cost you more than paying other
          types of sales charges.



          CONFLICTS OF INTEREST



          The Trust's shares are available only to variable annuity and variable
          life separate accounts of insurance companies that are unaffiliated
          with Janus Capital and to certain qualified retirement plans. Although
          the Portfolios do not currently anticipate any disadvantages to owners
          of variable insurance contracts because each Portfolio offers its
          shares to such entities, there is a possibility that a material
          conflict may arise. The Trustees monitor events in order to identify
          any disadvantages or material irreconcilable conflicts and to
          determine what action, if any, should be taken in response. If a
          material disadvantage or conflict occurs, the Trustees may require one
          or more insurance company separate accounts or qualified plans to
          withdraw its investments in one or more Portfolios or substitute
          Shares of another Portfolio. If this occurs, a Portfolio may be forced
          to sell its securities at disadvantageous prices. In addition, the
          Trustees may refuse to sell Shares of any Portfolio to any separate
          account or qualified plan or may suspend or terminate the offering of
          a Portfolio's Shares if such action is required by law or regulatory
          authority or is in the best interests of that Portfolio's
          shareholders. It is possible that a qualified plan investing in the
          Portfolios could lose its qualified plan status under the Internal
          Revenue Code, which could have adverse tax consequences on insurance
          company separate accounts investing in the Shares. Janus Capital
          intends to monitor such qualified plans and the Portfolios may
          discontinue sales to a qualified plan and require plan participants
          with existing investments in the Shares to redeem those investments if
          a plan loses (or in the opinion of Janus Capital is at risk of losing)
          its qualified plan status.


          YEAR 2000

          Preparing for Year 2000 is a high priority for Janus Capital, which
          has established a dedicated group to address this issue. Janus Capital
          has devoted considerable internal resources and has engaged one of the
          foremost experts in the field to help achieve Year 2000 readiness.
          Janus Capital does not anticipate that Year 2000-related issues will
          have a material impact on its ability to continue to provide the
          Portfolios with service at current levels; however, Janus Capital
          cannot make any assurances that the steps it has taken to ensure Year
          2000 readiness will be successful. In addition, there can be no
          assurance that Year 2000 issues will not affect the companies in which
          the Portfolios invest or worldwide markets and economies.

 34 Janus Aspen Series
<PAGE>
                                                         Distributions and taxes

DISTRIBUTIONS

          To avoid taxation of the Portfolios, the Internal Revenue Code
          requires each Portfolio to distribute net income and any net gains
          realized on its investments annually. A Portfolio's income from
          dividends and interest and any net realized short-term gains are paid
          to shareholders as ordinary income dividends. Net realized long-term
          gains are paid to shareholders as capital gains distributions.

PORTFOLIOS OTHER THAN MONEY MARKET PORTFOLIO


          Each class of each Portfolio, other than Money Market Portfolio,
          distributes substantially all of its investment income at least
          semi-annually and its net realized gains, if any, at least annually.
          All dividends and capital gains distributions from Shares of a
          Portfolio will automatically be reinvested into additional Shares of
          that Portfolio.


          HOW DISTRIBUTIONS AFFECT NAV

          Distributions, other than daily income dividends, are paid to
          shareholders as of the record date of the distribution of a Portfolio,
          regardless of how long the shares have been held. Undistributed income
          and realized gains are included in the daily NAV of a Portfolio's
          Shares. The Share price of a Portfolio drops by the amount of the
          distribution, net of any subsequent market fluctuations. For example,
          assume that on December 31, the Shares of Growth Portfolio declared a
          dividend in the amount of $0.25 per share. If the price of Growth
          Portfolio's Shares was $10.00 on December 30, the share price on
          December 31 would be $9.75, barring market fluctuations.

MONEY MARKET PORTFOLIO

          For the Shares of Money Market Portfolio, dividends representing
          substantially all of the net investment income and any net realized
          gains on sales of securities are declared daily, Saturdays, Sundays
          and holidays included, and distributed on the last business day of
          each month. If a month begins on a Saturday, Sunday or holiday,
          dividends for those days are declared at the end of the preceding
          month and distributed on the first business day of the month. All
          distributions will be automatically reinvested in Shares of the
          Portfolio.

TAXES

          TAXES ON DISTRIBUTIONS


          Because Shares of the Portfolios may be purchased only through
          variable insurance contracts and qualified plans, it is anticipated
          that any income dividends or capital gains distributions made by the
          Shares of a Portfolio will be exempt from current taxation if left to
          accumulate within the variable insurance contract or qualified plan.
          Generally, withdrawals from such contracts or plans may be subject to
          ordinary income tax and, if made before age 59 1/2, a 10% penalty tax.
          The tax status of your investment depends on the features of your
          qualified plan or variable insurance contract. Further information may
          be found in your plan documents or in the prospectus of the separate
          account offering such contract.


          TAXATION OF THE PORTFOLIOS

          Dividends, interest and some gains received by the Portfolios on
          foreign securities may be subject to withholding of foreign taxes. The
          Portfolios may from year to year make the election permitted under
          Section 853 of the Internal Revenue Code to pass through such taxes to
          shareholders. If such election is not made, any foreign taxes paid or
          accrued will represent an expense to the Portfolios which will reduce
          their investment income.

                                                     Distributions and taxes  35
<PAGE>

          The Portfolios do not expect to pay any federal income or excise taxes
          because they intend to meet certain requirements of the Internal
          Revenue Code. In addition, because a class of shares of each Portfolio
          are sold in connection with variable annuity contracts and variable
          life insurance contracts, each Portfolio intends to qualify under the
          Internal Revenue Code with respect to the diversification requirements
          related to the tax-deferred status of insurance company separate
          accounts.

 36 Janus Aspen Series
<PAGE>
                                                             Shareholder's guide


          INVESTORS MAY NOT PURCHASE OR REDEEM SHARES OF THE PORTFOLIOS
          DIRECTLY. SHARES MAY BE PURCHASED OR REDEEMED ONLY THROUGH VARIABLE
          INSURANCE CONTRACTS OFFERED BY THE SEPARATE ACCOUNTS OF PARTICIPATING
          INSURANCE COMPANIES OR THROUGH QUALIFIED RETIREMENT PLANS. CERTAIN
          PORTFOLIOS MAY NOT BE AVAILABLE IN CONNECTION WITH A PARTICULAR
          CONTRACT AND CERTAIN CONTRACTS MAY LIMIT ALLOCATIONS AMONG THE
          PORTFOLIOS. REFER TO THE PROSPECTUS FOR THE PARTICIPATING INSURANCE
          COMPANY'S SEPARATE ACCOUNT OR YOUR PLAN DOCUMENTS FOR INSTRUCTIONS ON
          PURCHASING OR SELLING OF VARIABLE INSURANCE CONTRACTS AND ON HOW TO
          SELECT SPECIFIC PORTFOLIOS AS INVESTMENT OPTIONS FOR A CONTRACT OR A
          QUALIFIED PLAN.


PRICING OF PORTFOLIO SHARES

          Investments will be processed at the NAV next determined after an
          order is received and accepted by a Portfolio or its agent. In order
          to receive a day's price, your order must be received by the close of
          the regular trading session of the New York Stock Exchange any day
          that the NYSE is open. Securities of the Portfolios other than Money
          Market Portfolio are valued at market value or, if a market quotation
          is not readily available, at their fair value determined in good faith
          under procedures established by and under the supervision of the
          Trustees. Short-term instruments maturing within 60 days are valued at
          amortized cost, which approximates market value. See the SAI for more
          detailed information.

          To the extent a Portfolio holds securities that are primarily listed
          on foreign exchanges that trade on weekends or other days when the
          Portfolios do not price their shares, the NAV of a Portfolio's shares
          may change on days when shareholders will not be able to purchase or
          redeem the Portfolio's shares.

          Money Market Portfolio's securities are valued at their amortized
          cost. Amortized cost valuation involves valuing an instrument at its
          cost and thereafter assuming a constant amortization to maturity (or
          such other date as permitted by Rule 2a-7) of any discount or premium.
          If fluctuating interest rates cause the market value of the portfolio
          to deviate more than 1/2 of 1% from the value determined on the basis
          of amortized cost, the Trustees will consider whether any action, such
          as adjusting the Share's NAV to reflect current market conditions,
          should be initiated to prevent any material dilutive effect on
          shareholders.

PURCHASES


          Purchases of Shares may be made only by the separate accounts of
          insurance companies for the purpose of funding variable insurance
          contracts or by qualified plans. Refer to the prospectus of the
          appropriate insurance company separate account or your plan documents
          for information on how to invest in the Shares of each Portfolio.
          Participating insurance companies and certain other designated
          organizations are authorized to receive purchase orders on the
          Portfolios' behalf.


          Each Portfolio reserves the right to reject any specific purchase
          order. Purchase orders may be refused if, in Janus Capital's opinion,
          they are of a size that would disrupt the management of a Portfolio.
          Although there is no present intention to do so, the Portfolios may
          discontinue sales of their shares if management and the Trustees
          believe that continued sales may adversely affect a Portfolio's
          ability to achieve its investment objective. If sales of a Portfolio's
          Shares are discontinued, it is expected that existing participants
          invested in that Portfolio would be permitted to continue to authorize
          investment in that Portfolio and to reinvest any dividends or capital
          gains distributions, absent highly unusual circumstances. The
          Portfolios may discontinue sales to a qualified plan and require plan
          participants with existing investments in the Shares to redeem those
          investments if the plan loses (or in the opinion of Janus Capital, is
          at risk of losing) its qualified plan status.

                                                         Shareholder's guide  37
<PAGE>

REDEMPTIONS


          Redemptions, like purchases, may be effected only through the separate
          accounts of participating insurance companies or through qualified
          plans. Please refer to the appropriate separate account prospectus or
          plan documents for details.


          Shares of any Portfolio may be redeemed on any business day.
          Redemptions are processed at the NAV next calculated after receipt and
          acceptance of the redemption order by the Portfolio or its agent.
          Redemption proceeds will normally be wired the business day following
          receipt of the redemption order, but in no event later than seven days
          after receipt of such order.

SHAREHOLDER COMMUNICATIONS

          Shareholders will receive annual and semiannual reports including the
          financial statements of the Shares of the Portfolios that they have
          authorized for investment. Each report will show the investments owned
          by each Portfolio and the market values thereof, as well as other
          information about the Portfolios and their operations. The Trust's
          fiscal year ends December 31.

 38 Janus Aspen Series
<PAGE>
                                                            Financial highlights


          No Financial Highlights are presented for the Service Shares because
          the Shares did not commence operations until January 1, 2000.


                                                        Financial highlights  39
<PAGE>
Glossary of investment terms

          This glossary provides a more detailed description of some of the
          types of securities and other instruments in which the Portfolios may
          invest. The Portfolios may invest in these instruments to the extent
          permitted by their investment objectives and policies. The Portfolios
          are not limited by this discussion and may invest in any other types
          of instruments not precluded by the policies discussed elsewhere in
          this Prospectus. Please refer to the SAI for a more detailed
          discussion of certain instruments.

I. EQUITY AND DEBT SECURITIES

          BONDS are debt securities issued by a company, municipality,
          government or government agency. The issuer of a bond is required to
          pay the holder the amount of the loan (or par value of the bond) at a
          specified maturity and to make scheduled interest payments.

          COMMERCIAL PAPER is a short-term debt obligation with a maturity
          ranging from 1 to 270 days issued by banks, corporations and other
          borrowers to investors seeking to invest idle cash. The Portfolios may
          purchase commercial paper issued in private placements under Section
          4(2) of the Securities Act of 1933.

          COMMON STOCKS are equity securities representing shares of ownership
          in a company and usually carry voting rights and earns dividends.
          Unlike preferred stock, dividends on common stock are not fixed but
          are declared at the discretion of the issuer's board of directors.

          CONVERTIBLE SECURITIES are preferred stocks or bonds that pay a fixed
          dividend or interest payment and are convertible into common stock at
          a specified price or conversion ratio.

          DEBT SECURITIES are securities representing money borrowed that must
          be repaid at a later date. Such securities have specific maturities
          and usually a specific rate of interest or an original purchase
          discount.

          DEPOSITARY RECEIPTS are receipts for shares of a foreign-based
          corporation that entitle the holder to dividends and capital gains on
          the underlying security. Receipts include those issued by domestic
          banks (American Depositary Receipts), foreign banks (Global or
          European Depositary Receipts) and broker-dealers (depositary shares).

          FIXED-INCOME SECURITIES are securities that pay a specified rate of
          return. The term generally includes short-and long-term government,
          corporate and municipal obligations that pay a specified rate of
          interest or coupons for a specified period of time, and preferred
          stock, which pays fixed dividends. Coupon and dividend rates may be
          fixed for the life of the issue or, in the case of adjustable and
          floating rate securities, for a shorter period.

          HIGH-YIELD/HIGH-RISK SECURITIES are securities that are rated below
          investment grade by the primary rating agencies (e.g., BB or lower by
          Standard & Poor's and Ba or lower by Moody's). Other terms commonly
          used to describe such securities include "lower rated bonds,"
          "noninvestment grade bonds" and "junk bonds."

          MORTGAGE- AND ASSET-BACKED SECURITIES are shares in a pool of
          mortgages or other debt. These securities are generally pass-through
          securities, which means that principal and interest payments on the
          underlying securities (less servicing fees) are passed through to
          shareholders on a pro rata basis. These securities involve prepayment
          risk, which is the risk that the underlying mortgages or other debt
          may be refinanced or paid off prior to their maturities during periods
          of declining interest rates. In that case, a portfolio manager may
          have to reinvest the proceeds from the securities at a lower rate.
          Potential market gains on a security subject to prepayment risk may be
          more limited than potential market gains on a comparable security that
          is not subject to prepayment risk.

          PASSIVE FOREIGN INVESTMENT COMPANIES (PFICS) are any foreign
          corporations which generate certain amounts of passive income or hold
          certain amounts of assets for the production of passive income.
          Passive

 40 Janus Aspen Series
<PAGE>

          income includes dividends, interest, royalties, rents and annuities.
          To avoid taxes and interest that the Portfolios must pay if these
          investments are profitable, the Portfolios may make various elections
          permitted by the tax laws. These elections could require that the
          Portfolios recognize taxable income, which in turn must be
          distributed, before the securities are sold and before cash is
          received to pay the distributions.

          PAY-IN-KIND BONDS are debt securities that normally give the issuer an
          option to pay cash at a coupon payment date or give the holder of the
          security a similar bond with the same coupon rate and a face value
          equal to the amount of the coupon payment that would have been made.

          PREFERRED STOCKS are equity securities that generally pay dividends at
          a specified rate and have preference over common stock in the payment
          of dividends and liquidation. Preferred stock generally does not carry
          voting rights.

          REPURCHASE AGREEMENTS involve the purchase of a security by a
          Portfolio and a simultaneous agreement by the seller (generally a bank
          or dealer) to repurchase the security from the Portfolio at a
          specified date or upon demand. This technique offers a method of
          earning income on idle cash. These securities involve the risk that
          the seller will fail to repurchase the security, as agreed. In that
          case, a Portfolio will bear the risk of market value fluctuations
          until the security can be sold and may encounter delays and incur
          costs in liquidating the security.

          REVERSE REPURCHASE AGREEMENTS involve the sale of a security by a
          Portfolio to another party (generally a bank or dealer) in return for
          cash and an agreement by the Portfolio to buy the security back at a
          specified price and time. This technique will be used primarily to
          provide cash to satisfy unusually high redemption requests, or for
          other temporary or emergency purposes.

          RULE 144A SECURITIES are securities that are not registered for sale
          to the general public under the Securities Act of 1933, but that may
          be resold to certain institutional investors.

          STANDBY COMMITMENTS are obligations purchased by a Portfolio from a
          dealer that give the Portfolio the option to sell a security to the
          dealer at a specified price.

          STEP COUPON BONDS are debt securities that trade at a discount from
          their face value and pay coupon interest. The discount from the face
          value depends on the time remaining until cash payments begin,
          prevailing interest rates, liquidity of the security and the perceived
          credit quality of the issuer.

          STRIP BONDS are debt securities that are stripped of their interest
          (usually by a financial intermediary) after the securities are issued.
          The market value of these securities generally fluctuates more in
          response to changes in interest rates than interest-paying securities
          of comparable maturity.

          TENDER OPTION BONDS are generally long-term securities that are
          coupled with an option to tender the securities to a bank,
          broker-dealer or other financial institution at periodic intervals and
          receive the face value of the bond. This type of security is commonly
          used as a means of enhancing the security's liquidity.

          U.S. GOVERNMENT SECURITIES include direct obligations of the U.S.
          government that are supported by its full faith and credit. Treasury
          bills have initial maturities of less than one year, Treasury notes
          have initial maturities of one to ten years and Treasury bonds may be
          issued with any maturity but generally have maturities of at least ten
          years. U.S. government securities also include indirect obligations of
          the U.S. government that are issued by federal agencies and government
          sponsored entities. Unlike Treasury securities, agency securities
          generally are not backed by the full faith and credit of the U.S.
          government. Some agency securities are supported by the right of the
          issuer to borrow from the Treasury, others are supported by the
          discretionary authority of the U.S. government to purchase the
          agency's obligations and others are supported only by the credit of
          the sponsoring agency.

                                                Glossary of investment terms  41
<PAGE>

          VARIABLE AND FLOATING RATE SECURITIES have variable or floating rates
          of interest and, under certain limited circumstances, may have varying
          principal amounts. These securities pay interest at rates that are
          adjusted periodically according to a specified formula, usually with
          reference to some interest rate index or market interest rate. The
          floating rate tends to decrease the security's price sensitivity to
          changes in interest rates.

          WARRANTS are securities, typically issued with preferred stock or
          bonds, that give the holder the right to buy a proportionate amount of
          common stock at a specified price, usually at a price that is higher
          than the market price at the time of issuance of the warrant. The
          right may last for a period of years or indefinitely.

          WHEN-ISSUED, DELAYED DELIVERY AND FORWARD TRANSACTIONS generally
          involve the purchase of a security with payment and delivery at some
          time in the future - i.e., beyond normal settlement. The Portfolios do
          not earn interest on such securities until settlement and bear the
          risk of market value fluctuations in between the purchase and
          settlement dates. New issues of stocks and bonds, private placements
          and U.S. government securities may be sold in this manner.

          ZERO COUPON BONDS are debt securities that do not pay regular interest
          at regular intervals, but are issued at a discount from face value.
          The discount approximates the total amount of interest the security
          will accrue from the date of issuance to maturity. The market value of
          these securities generally fluctuates more in response to changes in
          interest rates than interest-paying securities.

II. FUTURES, OPTIONS AND OTHER DERIVATIVES

          FORWARD CONTRACTS are contracts to purchase or sell a specified amount
          of a financial instrument for an agreed upon price at a specified
          time. Forward contracts are not currently exchange traded and are
          typically negotiated on an individual basis. The Portfolios may enter
          into forward currency contracts to hedge against declines in the value
          of securities denominated in, or whose value is tied to, a currency
          other than the U.S. dollar or to reduce the impact of currency
          appreciation on purchases of such securities. They may also enter into
          forward contracts to purchase or sell securities or other financial
          indices.

          FUTURES CONTRACTS are contracts that obligate the buyer to receive and
          the seller to deliver an instrument or money at a specified price on a
          specified date. The Portfolios may buy and sell futures contracts on
          foreign currencies, securities and financial indices including
          interest rates or an index of U.S. government, foreign government,
          equity or fixed-income securities. The Portfolios may also buy options
          on futures contracts. An option on a futures contract gives the buyer
          the right, but not the obligation, to buy or sell a futures contract
          at a specified price on or before a specified date. Futures contracts
          and options on futures are standardized and traded on designated
          exchanges.

          INDEXED/STRUCTURED SECURITIES are typically short- to
          intermediate-term debt securities whose value at maturity or interest
          rate is linked to currencies, interest rates, equity securities,
          indices, commodity prices or other financial indicators. Such
          securities may be positively or negatively indexed (i.e. their value
          may increase or decrease if the reference index or instrument
          appreciates). Indexed/structured securities may have return
          characteristics similar to direct investments in the underlying
          instruments and may be more volatile than the underlying instruments.
          A Portfolio bears the market risk of an investment in the underlying
          instruments, as well as the credit risk of the issuer.

          INTEREST RATE SWAPS involve the exchange by two parties of their
          respective commitments to pay or receive interest (e.g., an exchange
          of floating rate payments for fixed rate payments).

          INVERSE FLOATERS are debt instruments whose interest rate bears an
          inverse relationship to the interest rate on another instrument or
          index. For example, upon reset the interest rate payable on a security
          may go down when the underlying index has risen. Certain inverse
          floaters may have an interest rate reset

 42 Janus Aspen Series
<PAGE>

          mechanism that multiplies the effects of change in the underlying
          index. Such mechanism may increase the volatility of the security's
          market value.

          OPTIONS are the right, but not the obligation, to buy or sell a
          specified amount of securities or other assets on or before a fixed
          date at a predetermined price. The Portfolios may purchase and write
          put and call options on securities, securities indices and foreign
          currencies.

                                                Glossary of investment terms  43
<PAGE>
Explanation of rating categories

          The following is a description of credit ratings issued by two of the
          major credit ratings agencies. Credit ratings evaluate only the safety
          of principal and interest payments, not the market value risk of lower
          quality securities. Credit rating agencies may fail to change credit
          ratings to reflect subsequent events on a timely basis. Although Janus
          Capital considers security ratings when making investment decisions,
          it also performs its own investment analysis and does not rely solely
          on the ratings assigned by credit agencies.

STANDARD & POOR'S
RATINGS SERVICES

<TABLE>
                <S>                          <C>
                BOND RATING                  EXPLANATION
                -----------------------------------------------------------------------------------------
                Investment Grade
                AAA......................... Highest rating; extremely strong capacity to pay principal
                                             and interest.
                AA.......................... High quality; very strong capacity to pay principal and
                                             interest.
                A........................... Strong capacity to pay principal and interest; somewhat more
                                             susceptible to the adverse effects of changing circumstances
                                             and economic conditions.
                BBB......................... Adequate capacity to pay principal and interest; normally
                                             exhibit adequate protection parameters, but adverse economic
                                             conditions or changing circumstances more likely to lead to
                                             a weakened capacity to pay principal and interest than for
                                             higher rated bonds.
                Non-Investment Grade
                BB, B, CCC, CC, C........... Predominantly speculative with respect to the issuer's
                                             capacity to meet required interest and principal payments.
                                             BB - lowest degree of speculation; C - the highest degree of
                                             speculation. Quality and protective characteristics
                                             outweighed by large uncertainties or major risk exposure to
                                             adverse conditions.
                D........................... In default.
</TABLE>

 44 Janus Aspen Series
<PAGE>

MOODY'S INVESTORS SERVICE, INC.

<TABLE>
                <S>                          <C>
                BOND RATING                  EXPLANATION
                -----------------------------------------------------------------------------------------
                Investment Grade
                Aaa......................... Highest quality, smallest degree of investment risk.
                Aa.......................... High quality; together with Aaa bonds, they compose the
                                             high-grade bond group.
                A........................... Upper-medium grade obligations; many favorable investment
                                             attributes.
                Baa......................... Medium-grade obligations; neither highly protected nor
                                             poorly secured. Interest and principal appear adequate for
                                             the present but certain protective elements may be lacking
                                             or may be unreliable over any great length of time.
                Non-Investment Grade
                Ba.......................... More uncertain, with speculative elements. Protection of
                                             interest and principal payments not well safeguarded during
                                             good and bad times.
                B........................... Lack characteristics of desirable investment; potentially
                                             low assurance of timely interest and principal payments or
                                             maintenance of other contract terms over time.
                Caa......................... Poor standing, may be in default; elements of danger with
                                             respect to principal or interest payments.
                Ca.......................... Speculative in a high degree; could be in default or have
                                             other marked shortcomings.
                C........................... Lowest-rated; extremely poor prospects of ever attaining
                                             investment standing.
</TABLE>

          Unrated securities will be treated as noninvestment grade securities
          unless a portfolio manager determines that such securities are the
          equivalent of investment grade securities. Securities that have
          received ratings from more than one agency are considered investment
          grade if at least one agency has rated the security investment grade.

                                            Explanation of rating categories  45
<PAGE>

SECURITIES HOLDINGS BY RATING CATEGORY


          During the fiscal period ended June 30, 1999, the percentage of
          securities holdings for the following Portfolios by rating category
          based upon a weighted monthly average was:



<TABLE>
<CAPTION>
                 FLEXIBLE INCOME PORTFOLIO
                ----------------------------------------------------------------------------------------
                <S>                                                           <C>
                    BONDS-S&P RATING:
                 AAA                                                                       11%
                 AA                                                                         3%
                 A                                                                         12%
                 BBB                                                                       19%
                 BB                                                                        12%
                 B                                                                         20%
                 CCC                                                                        1%
                 CC                                                                         0%
                 C                                                                          0%
                 Not Rated                                                                  7%
                 Preferred Stock                                                            1%
                 Cash and Options                                                          14%
                 TOTAL                                                                    100%
                ----------------------------------------------------------------------------------------
</TABLE>



<TABLE>
<CAPTION>
                 HIGH-YIELD PORTFOLIO
                ----------------------------------------------------------------------------------------
                <S>                                                           <C>
                    BONDS-S&P RATING:
                 AAA                                                                        1%
                 AA                                                                         0%
                 A                                                                          0%
                 BBB                                                                        1%
                 BB                                                                         7%
                 B                                                                         67%
                 CCC                                                                        9%
                 CC                                                                         0%
                 C                                                                          0%
                 Not Rated                                                                 13%
                 Preferred Stock                                                            0%
                 Cash and Options                                                           2%
                 TOTAL                                                                    100%
                ----------------------------------------------------------------------------------------
</TABLE>


          No other Portfolio described in this Prospectus held 5% or more of its
          assets in bonds rated below investment grade for the fiscal period
          ended December 31, 1998.

 46 Janus Aspen Series
<PAGE>

                       This page intentionally left blank
<PAGE>

[JANUS LOGO]

        1-800-29JANUS
        100 Fillmore Street
        Denver, Colorado 80206-4928
        janus.com

You can request other information, including a Statement of
Additional Information, Annual Report or Semiannual Report, free of
charge, by contacting your plan sponsor or visiting our Web site at
janus.com. In the Portfolios' Annual Report, you will find a
discussion of the market conditions and investment strategies that
significantly affected the Portfolios' performance during their last
fiscal year. Other information is also available from financial
intermediaries that sell Shares of the Portfolios.
The Statement of Additional Information provides detailed
information about the Portfolios and is incorporated into this
Prospectus by reference. You may review the Portfolios' Statement of
Additional Information at the Public Reference Room of the SEC or
get text only copies for a fee, by writing to or calling the Public
Reference Room, Washington, D.C. 20549-6009 (1-800-SEC-0330). You
may obtain the Statement of Additional Information for free from the
SEC's Web site at http://www.sec.gov.

                    Investment Company Act File No. 811-7736





<PAGE>

                               Janus Aspen Series
                              Institutional Shares

       Supplement Dated December 31, 1999 to Prospectus Dated May 1, 1999

     THIS INFORMATION SUPPLEMENTS THE PROSPECTUS FOR THE INSTITUTIONAL SHARES OF
JANUS ASPEN SERIES DATED MAY 1, 1999. THIS SUPPLEMENT, TOGETHER WITH THE
PROSPECTUS, CONSTITUTE A CURRENT PROSPECTUS. TO REQUEST ANOTHER COPY OF THE
PROSPECTUS PLEASE CONTACT YOUR INSURANCE COMPANY OR PLAN SPONSOR.

     The following information should be added to the INVESTMENT
PERSONNEL/PORTFOLIO MANAGERS' biographies on page 33 of the Prospectus.

     Effective December 31, 1999, Laurence J. Chang will be co-manager of
Worldwide Growth Portfolio. Prior to serving as co-manager of Worldwide Growth
Portfolio, he served as assistant portfolio manager of Worldwide Growth
Portfolio since 1996 and has co-managed Janus Worldwide Fund since September
1999. Currently, he is also Executive Vice President and co-manager of
International Growth Portfolio and Janus Overseas Fund which he has co-managed
since May 1998 and April 1998, respectively. He served as assistant portfolio
manager for these funds since 1996. Mr. Chang joined Janus Capital in 1993 after
receiving an undergraduate degree with honors in Religion and Philosophy from
Dartmouth College and a Master's Degree in Political Science from Stanford
University. Mr. Chang is a Chartered Financial Analyst.

     Effective January 1, 2000, Karen L. Reidy will be Executive Vice President
and portfolio manager of Balanced Portfolio and Equity Income Portfolio
replacing Blaine Rollins who previously managed Balanced Portfolio and Equity
Income Portfolio. Prior to joining Janus Capital in 1995, she worked for Price
Waterhouse in the Mergers and Acquisitions area, performing corporate due
diligence, and as an audit senior, analyzing financials for corporate clients.
She received an undergraduate degree in Accounting from the University of
Colorado. She is a Chartered Financial Analyst.

     Effective January 1, 2000, Blaine P. Rollins will be Executive Vice
President and portfolio manager of Growth Portfolio replacing Jim Craig who
previously managed Growth Portfolio from inception to December 1999. Prior to
serving as manager of Growth Portfolio, Mr. Rollins served as Executive Vice
President and portfolio manager of Balanced Portfolio from May 1996 to December
1999, Equity Income Portfolio from inception to December 1999 and assistant
portfolio manager of Growth Portfolio. Mr. Rollins joined Janus Capital in 1990
and gained experience as a fixed-income trader and equity research analyst prior
to managing Balanced Portfolio. He holds a Bachelor of Science in Finance from
the University of Colorado and is a Chartered Financial Analyst.

     Effective January 1, 2000, John Schreiber will be assistant portfolio
manager of Growth Portfolio, Balanced Portfolio and Equity Income Portfolio. Mr.
Schreiber joined Janus in 1997 as an equity research analyst. Prior to coming to
Janus, he was an equity analyst with Fidelity Investments. Mr. Schreiber holds a
Bachelor of Science degree in mechanical engineering from the University of
Washington and a Master of Business Administration from Harvard University. He
is a Chartered Financial Analyst.

     The following replaces CLASSES OF SHARES on page 36 of the Prospectus:

     Each Portfolio currently offers three classes of Shares, one of which, the
Institutional Shares, are offered pursuant to this Prospectus and are sold under
the name Janus Aspen Series. The Shares offered by this Prospectus are available
only in connection with investment in and payments under variable insurance
contracts as well as certain qualified retirement plans. Retirement Shares of
each Portfolio are offered by separate prospectus and are available only to
qualified plans using plan service providers that are compensated for providing
distribution and/or recordkeeping and other administrative services. Service
Shares of each Portfolio are offered by separate prospectus and are available
only in connection with variable insurance contracts and certain qualified
retirement plans offered by entities that require payment for distribution and
shareholder servicing. Because the expenses of each class may differ, the
performance of each class is expected to differ. If you would like additional
information about either Retirement Shares or Service Shares, please call
1-800-525-0200.

A15UP1299

<PAGE>

                               Janus Aspen Series
                               Retirement Shares

     Supplement Dated December 31, 1999 to Prospectus Dated August 20, 1999

     THIS INFORMATION SUPPLEMENTS THE PROSPECTUS FOR THE RETIREMENT SHARES OF
JANUS ASPEN SERIES DATED AUGUST 20, 1999. THIS SUPPLEMENT, TOGETHER WITH THE
PROSPECTUS, CONSTITUTE A CURRENT PROSPECTUS. TO REQUEST ANOTHER COPY OF THE
PROSPECTUS PLEASE CONTACT YOUR PLAN SPONSOR.

     The following information should be added to the INVESTMENT
PERSONNEL/PORTFOLIO MANAGERS' biographies on page 31 of the Prospectus.

     Effective December 31, 1999, Laurence J. Chang will be co-manager of
Worldwide Growth Portfolio. Prior to serving as co-manager of Worldwide Growth
Portfolio, he served as assistant portfolio manager of Worldwide Growth
Portfolio since 1996 and has co-managed Janus Worldwide Fund since September
1999. Currently, he is, also, Executive Vice President and co-manager of
International Growth Portfolio and Janus Overseas Fund which he has co-managed
since May 1998 and April 1998, respectively. He served as assistant portfolio
manager for these funds since 1996. Mr. Chang joined Janus Capital in 1993 after
receiving an undergraduate degree with honors in Religion and Philosophy from
Dartmouth College and a Master's Degree in Political Science from Stanford
University. Mr. Chang is a Chartered Financial Analyst.

     Effective January 1, 2000, Karen L. Reidy will be Executive Vice President
and portfolio manager of Balanced Portfolio and Equity Income Portfolio
replacing Blaine Rollins who previously managed Balanced Portfolio and Equity
Income Portfolio. Prior to joining Janus Capital in 1995, she worked for Price
Waterhouse in the Mergers and Acquisitions area, performing corporate due
diligence, and as an audit senior, analyzing financials for corporate clients.
She received an undergraduate degree in Accounting from the University of
Colorado. She is a Chartered Financial Analyst.

     Effective January 1, 2000, Blaine P. Rollins will be Executive Vice
President and portfolio manager of Growth Portfolio replacing Jim Craig who
previously managed Growth Portfolio from inception to December 1999. Prior to
serving as manager of Growth Portfolio, Mr. Rollins served as Executive Vice
President and portfolio manager of Balanced Portfolio from May 1996 to December
1999, Equity Income Portfolio from inception to December 1999 and assistant
portfolio manager of Growth Portfolio. Mr. Rollins joined Capital in 1990 and
gained experience as a fixed-income trader and equity research analyst prior to
managing Balanced Portfolio. He holds a Bachelor of Science in Finance from the
University of Colorado and is a Chartered Financial Analyst.

     Effective January 1, 2000, John Schreiber will be assistant portfolio
manager of Growth Portfolio, Balanced Portfolio and Equity Income Portfolio. Mr.
Schreiber joined Janus in 1997 as an equity research analyst. Prior to coming to
Janus, he was an equity analyst with Fidelity Investments. Mr. Schreiber holds a
Bachelor of Science degree in mechanical engineering from the University of
Washington and a Master of Business Administration from Harvard University. He
is a Chartered Financial Analyst.

     The following replaces CLASSES OF SHARES on page 34 of the Prospectus:

     Each Portfolio currently offers three classes of Shares, one of which, the
Retirement Shares, are offered pursuant to this Prospectus. The Shares offered
by this Prospectus are available only to qualified retirement plans using plan
service providers that are compensated for providing distribution and/or
recordkeeping and other administrative services provided to plan participants.
Institutional Shares of each Portfolio are offered by separate prospectus and
are available only in connection with and payments under variable insurance
contracts as well as certain qualified retirement plans. Service Shares of each
Portfolio are offered by separate prospectus and are available only in
connection with variable insurance contracts and certain qualified retirement
plans offered by entities that require payment for distribution and shareholder
servicing. Because the expenses of each class may differ, the performance of
each class is expected to differ. If you would like additional information about
either Institutional Shares or Service Shares, please call 1-800-525-0200.

ARSUP1299
<PAGE>

The information in this Statement of Additional Information is not complete and
may be changed. We may not sell these securities until the registration
statement filed with the Securities and Exchange Commission is effective. This
Statement of Additional Information is not an offer to sell these securities and
is not soliciting an offer to buy these securities in any state where the offer
is not permitted.

                                         LOGO

                                  Subject to Completion
        Preliminary Statement of Additional Information Dated October 26, 1999


                 Janus Aspen Series

                 Service Shares


                     Growth Portfolio
                     Aggressive Growth Portfolio
                     Capital Appreciation Portfolio
                     International Growth Portfolio
                     Worldwide Growth Portfolio
                     Balanced Portfolio
                     Equity Income Portfolio
                     Growth and Income Portfolio
                     Flexible Income Portfolio
                     High-Yield Portfolio

                              100 Fillmore Street
                              Denver, CO 80206-4928
                              (800) 29JANUS

                              Statement of Additional Information


                 This Statement of Additional Information expands upon and
                 supplements the information contained in the current Prospectus
                 for the Retirement Shares (the "Shares") of the portfolios
                 listed above, each of which is a separate series of Janus Aspen
                 Series, a Delaware business trust. Each of these series of the
                 Trust represents shares of beneficial interest in a separate
                 portfolio of securities and other assets with its own objective
                 and policies. Each Portfolio is managed separately by Janus
                 Capital Corporation.



                 The Service Shares of the Portfolios may be purchased only by
                 separate accounts of insurance companies for the purpose of
                 funding variable life insurance policies and variable annuity
                 contracts (collectively, "variable insurance contracts") and by
                 certain qualified retirement plans.



                 This SAI is not a Prospectus and should be read in conjunction
                 with the Portfolios' Prospectus dated December 31, 1999, which
                 is incorporated by reference into this SAI and may be obtained
                 from your insurance company or plan sponsor. This SAI contains
                 additional and more detailed information about the Portfolios'
                 operations and activities than the Prospectus. The Annual
                 Reports, which contain important financial information about
                 the Portfolios, are incorporated by reference into this SAI and
                 are also available, without charge from your insurance company
                 or plan sponsor.

<PAGE>

    LOGO
<PAGE>
                                                              Table of contents


<TABLE>
                <S>                                                           <C>
                Classification, Portfolio Turnover, Investment Policies and
                Restrictions, and Investment Strategies and Risks...........    2
                Investment Adviser..........................................   22
                Custodian, Transfer Agent and Certain Affiliations..........   25
                Portfolio Transactions and Brokerage........................   26
                Trustees and Officers.......................................   30
                Shares of the Trust.........................................   35
                   Net Asset Value Determination............................   35
                   Purchases................................................   35
                   Distribution and Shareholder Servicing Plan..............   35
                   Redemptions..............................................   36
                Income Dividends, Capital Gains Distributions and Tax
                Status......................................................   38
                Miscellaneous Information...................................   39
                   Shares of the Trust......................................   39
                   Shareholder Meetings.....................................   39
                   Voting Rights............................................   39
                   Independent Accountants..................................   40
                   Registration Statement...................................   40
                Performance Information.....................................   41
                Financial Statements........................................   43
                Appendix A..................................................   44
                   Explanation of Rating Categories.........................   44
</TABLE>


                                                                               1
<PAGE>
Classification, portfolio turnover, investment policies and restrictions, and
                investment strategies and risks

CLASSIFICATION

          Each Portfolio is a series of the Trust, an open-end, management
          investment company. The Investment Company Act of 1940 ("1940 Act")
          classifies mutual funds as either diversified or nondiversified.
          Aggressive Growth Portfolio and Capital Appreciation Portfolio are
          nondiversified funds. Each of these Portfolios reserves the right to
          become a diversified fund by limiting the investments in which more
          than 5% of its total assets are invested. Growth Portfolio,
          International Growth Portfolio, Worldwide Growth Portfolio, Balanced
          Portfolio, Equity Income Portfolio, Growth and Income Portfolio,
          Flexible Income Portfolio and High-Yield Portfolio are diversified
          funds.

PORTFOLIO TURNOVER

          The Prospectus includes a discussion of portfolio turnover policies.
          Portfolio turnover is calculated by dividing total purchases or sales,
          whichever is less, by the average monthly value of a Portfolio's
          securities. The following table summarizes the portfolio turnover
          rates for the fiscal periods indicated. The information below is for
          fiscal years ended December 31.

<TABLE>
<CAPTION>
Portfolio Name                                                1998      1997
- ----------------------------------------------------------------------------
<S>                                                           <C>       <C>
Growth Portfolio............................................   73%      122%
Aggressive Growth Portfolio.................................  132%      130%
Capital Appreciation Portfolio..............................   91%      101%(1)
International Growth Portfolio..............................   93%       86%
Worldwide Growth Portfolio..................................   77%       80%
Balanced Portfolio..........................................   70%      139%
Equity Income Portfolio.....................................   79%      128%(1)
Growth and Income Portfolio.................................   62%(2)   N/A
Flexible Income Portfolio...................................  145%      119%
High-Yield Portfolio........................................  301%      299%
</TABLE>

(1) May 1, 1997 (inception) to December 31, 1997, annualized.
(2) May 1, 1998 (inception) to December 31, 1998, annualized.

INVESTMENT POLICIES AND RESTRICTIONS APPLICABLE TO ALL PORTFOLIOS

          The Portfolios are subject to certain fundamental policies and
          restrictions that may not be changed without shareholder approval.
          Shareholder approval means approval by the lesser of (i) more than 50%
          of the outstanding voting securities of the Trust (or a particular
          Portfolio or particular class of shares if a matter affects just that
          Portfolio or that class of shares), or (ii) 67% or more of the voting
          securities present at a meeting if the holders of more than 50% of the
          outstanding voting securities of the Trust (or a particular Portfolio
          or class of shares) are present or represented by proxy. As
          fundamental policies, each of the Portfolios may not:

          (1) Own more than 10% of the outstanding voting securities of any one
          issuer and, as to fifty percent (50%) of the value of the total assets
          of Aggressive Growth Portfolio and Capital Appreciation Portfolio and
          as to seventy-five percent (75%) of the value of the total assets of
          the other Portfolios, purchase the securities of any one issuer
          (except cash items and "government securities" as defined under the
          Investment Company Act of 1940, as amended, if immediately after and
          as a result of such purchase, the value of the holdings of a Portfolio
          in the securities of such issuer exceeds 5% of the value of such
          Portfolio's total assets. With respect to the other 50% of the value
          of its total assets, Aggressive Growth Portfolio and Capital
          Appreciation Portfolio may invest in the securities of as few as two
          issuers.

          (2) Invest 25% or more of the value of their respective total assets
          in any particular industry (other than U.S. government securities).

 2
<PAGE>

          (3) Invest directly in real estate or interests in real estate;
          however, the Portfolios may own debt or equity securities issued by
          companies engaged in those businesses.

          (4) Purchase or sell physical commodities other than foreign
          currencies unless acquired as a result of ownership of securities (but
          this limitation shall not prevent the Portfolios from purchasing or
          selling options, futures, swaps and forward contracts or from
          investing in securities or other instruments backed by physical
          commodities).

          (5) Lend any security or make any other loan if, as a result, more
          than 25% of a Portfolio's total assets would be lent to other parties
          (but this limitation does not apply to purchases of commercial paper,
          debt securities or repurchase agreements).

          (6) Act as an underwriter of securities issued by others, except to
          the extent that a Portfolio may be deemed an underwriter in connection
          with the disposition of its portfolio securities.

          As a fundamental policy, each Portfolio may, notwithstanding any other
          investment policy or limitation (whether or not fundamental), invest
          all of its assets in the securities of a single open-end management
          investment company with substantially the same fundamental investment
          objective, policies and limitations as such Portfolio.

          The Trustees have adopted additional investment restrictions for the
          Portfolios. These restrictions are operating policies of the
          Portfolios and may be changed by the Trustees without shareholder
          approval. The additional investment restrictions adopted by the
          Trustees to date include the following:

          (a) A Portfolio will not (i) enter into any futures contracts and
          related options for purposes other than bona fide hedging transactions
          within the meaning of Commodity Futures Trading Commission ("CFTC")
          regulations if the aggregate initial margin and premiums required to
          establish positions in futures contracts and related options that do
          not fall within the definition of bona fide hedging transactions will
          exceed 5% of the fair market value of a Portfolio's net assets, after
          taking into account unrealized profits and unrealized losses on any
          such contracts it has entered into; and (ii) enter into any futures
          contracts if the aggregate amount of such Portfolio's commitments
          under outstanding futures contracts positions would exceed the market
          value of its total assets.

          (b) The Portfolios do not currently intend to sell securities short,
          unless they own or have the right to obtain securities equivalent in
          kind and amount to the securities sold short without the payment of
          any additional consideration therefor, and provided that transactions
          in futures, options, swaps and forward contracts are not deemed to
          constitute selling securities short.

          (c) The Portfolios do not currently intend to purchase securities on
          margin, except that the Portfolios may obtain such short-term credits
          as are necessary for the clearance of transactions, and provided that
          margin payments and other deposits in connection with transactions in
          futures, options, swaps and forward contracts shall not be deemed to
          constitute purchasing securities on margin.

          (d) A Portfolio may not mortgage or pledge any securities owned or
          held by such Portfolio in amounts that exceed, in the aggregate, 15%
          of that Portfolio's net asset value, provided that this limitation
          does not apply to reverse repurchase agreements, deposits of assets to
          margin, guarantee positions in futures, options, swaps or forward
          contracts, or the segregation of assets in connection with such
          contracts.

          (e) The Portfolios may borrow money for temporary or emergency
          purposes (not for leveraging or investment) in an amount not exceeding
          25% of the value of their respective total assets (including the
          amount borrowed) less liabilities (other than borrowings). If
          borrowings exceed 25% of the value of a

                                                                               3
<PAGE>

          Portfolio's total assets by reason of a decline in net assets, the
          Portfolio will reduce its borrowings within three business days to the
          extent necessary to comply with the 25% limitation. This policy shall
          not prohibit reverse repurchase agreements, deposits of assets to
          margin or guarantee positions in futures, options, swaps or forward
          contracts, or the segregation of assets in connection with such
          contracts.

          (f) The Portfolios do not currently intend to purchase any security or
          enter into a repurchase agreement, if as a result, more than 15% of
          their respective net assets would be invested in repurchase agreements
          not entitling the holder to payment of principal and interest within
          seven days and in securities that are illiquid by virtue of legal or
          contractual restrictions on resale or the absence of a readily
          available market. The Trustees, or the Portfolios' investment adviser
          acting pursuant to authority delegated by the Trustees, may determine
          that a readily available market exists for securities eligible for
          resale pursuant to Rule 144A under the Securities Act of 1933 ("Rule
          144A Securities"), or any successor to such rule, Section 4(2)
          commercial paper and municipal lease obligations. Accordingly, such
          securities may not be subject to the foregoing limitation.

          (g) The Portfolios may not invest in companies for the purpose of
          exercising control of management.

          Under the terms of an exemptive order received from the Securities and
          Exchange Commission ("SEC"), each of the Portfolios may borrow money
          from or lend money to other funds that permit such transactions and
          for which Janus Capital serves as investment adviser. All such
          borrowing and lending will be subject to the above limits. A Portfolio
          will borrow money through the program only when the costs are equal to
          or lower than the cost of bank loans. Interfund loans and borrowings
          normally extend overnight, but can have a maximum duration of seven
          days. A Portfolio will lend through the program only when the returns
          are higher than those available from other short-term instruments
          (such as repurchase agreements). A Portfolio may have to borrow from a
          bank at a higher interest rate if an interfund loan is called or not
          renewed. Any delay in repayment to a lending Portfolio could result in
          a lost investment opportunity or additional borrowing costs.

          For the purposes of these investment restrictions, the identification
          of the issuer of a municipal obligation depends on the terms and
          conditions of the security. When assets and revenues of a political
          subdivision are separate from those of the government that created the
          subdivision and the security is backed only by the assets and revenues
          of the subdivision, the subdivision is deemed to be the sole issuer.
          Similarly, in the case of an industrial development bond, if the bond
          is backed only by assets and revenues of a nongovernmental user, then
          the nongovernmental user would be deemed to be the sole issuer. If,
          however, in either case, the creating government or some other entity
          guarantees the security, the guarantee would be considered a separate
          security that would be treated as an issue of the guaranteeing entity.

          For purposes of the Portfolios' restriction on investing in a
          particular industry, the Portfolios will rely primarily on industry
          classifications as published by Bloomberg L.P. To the extent that
          Bloomberg L.P. classifications are so broad that the primary economic
          characteristics in a single class are materially different, the
          Portfolios may further classify issuers in accordance with industry
          classifications as published by the SEC.

INVESTMENT POLICIES APPLICABLE TO CERTAIN PORTFOLIOS

          BALANCED PORTFOLIO. As an operational policy, at least 25% of the
          assets of Balanced Portfolio normally will be invested in fixed-income
          securities.

          FLEXIBLE INCOME PORTFOLIO. As a fundamental policy, this Portfolio may
          not purchase a non-income-producing security if, after such purchase,
          less than 80% of the Portfolio's total assets would be invested in
          income-producing securities. Income-producing securities include
          securities that make periodic interest

 4
<PAGE>

          payments as well as those that make interest payments on a deferred
          basis or pay interest only at maturity (e.g., Treasury bills or zero
          coupon bonds).

INVESTMENT STRATEGIES AND RISKS

Cash Position

          As discussed in the Prospectus, when a portfolio manager believes that
          market conditions are unfavorable for profitable investing, or when he
          or she is otherwise unable to locate attractive investment
          opportunities, the Portfolio's investment in cash and similar
          investments may increase. Securities that the Portfolios may invest in
          as a means of receiving a return on idle cash include commercial
          paper, certificates of deposit, repurchase agreements or other
          short-term debt obligations. The Portfolios may also invest in money
          market funds, including funds managed by Janus Capital. (See
          "Investment Company Securities" on page 8).

Illiquid Investments

          Each Portfolio may invest up to 15% of its net assets in illiquid
          investments (i.e., securities that are not readily marketable). The
          Trustees have authorized Janus Capital to make liquidity
          determinations with respect to certain securities, including Rule 144A
          Securities, commercial paper and municipal lease obligations purchased
          by the Portfolios. Under the guidelines established by the Trustees,
          Janus Capital will consider the following factors: (1) the frequency
          of trades and quoted prices for the obligation; (2) the number of
          dealers willing to purchase or sell the security and the number of
          other potential purchasers; (3) the willingness of dealers to
          undertake to make a market in the security; and (4) the nature of the
          security and the nature of the marketplace trades, including the time
          needed to dispose of the security, the method of soliciting offers and
          the mechanics of the transfer. In the case of commercial paper, Janus
          Capital will also consider whether the paper is traded flat or in
          default as to principal and interest and any ratings of the paper by a
          nationally recognized statistical rating organization ("NRSRO"). A
          foreign security that may be freely traded on or through the
          facilities of an offshore exchange or other established offshore
          securities market is not deemed to be a restricted security subject to
          these procedures.

          If illiquid securities exceed 15% of a Portfolio's net assets after
          the time of purchase the Portfolio will take steps to reduce in an
          orderly fashion its holdings of illiquid securities. Because illiquid
          securities may not be readily marketable, a portfolio manager may not
          be able to dispose of them in a timely manner. As a result, a
          Portfolio may be forced to hold illiquid securities while their price
          depreciates. Depreciation in the price of illiquid securities may
          cause the net asset value of a Portfolio to decline.


Securities Lending



          The Portfolios may lend securities to qualified parties (typically
          brokers or other financial institutions) who need to borrow securities
          in order to complete certain transactions such as covering short
          sales, avoiding failures to deliver securities or completing arbitrage
          activities. The Portfolios may seek to earn additional income through
          securities lending. Since there is the risk of delay in recovering a
          loaned security or the risk of loss in collateral rights if the
          borrower fails financially, securities lending will only be made to
          parties that Janus Capital deems creditworthy and in good standing. In
          addition, such loans will only be made if Janus Capital believes the
          benefit from granting such loans justifies the risk. The Portfolios
          will not have the right to vote on securities while they are being
          lent, but they will call a loan in anticipation of any important vote.
          All loans will be continuously secured by collateral which consists of
          cash, U.S. government securities, letters of credit and such other
          collateral permitted by the Securities and Exchange Commission and
          policies approved by the Trustees. Cash collateral may be invested in
          money


                                                                               5
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          market funds advised by Janus Capital to the extent consistent with
          exemptive relief obtained from the SEC.


Short Sales

          Each Portfolio may engage in "short sales against the box." This
          technique involves selling either a security that a Portfolio owns, or
          a security equivalent in kind and amount to the security sold short
          that the Portfolio has the right to obtain, for delivery at a
          specified date in the future. A Portfolio may enter into a short sale
          against the box to hedge against anticipated declines in the market
          price of portfolio securities. If the value of the securities sold
          short increases prior to the scheduled delivery date, a Portfolio
          loses the opportunity to participate in the gain.

Zero Coupon, Step Coupon and Pay-In-Kind Securities

          Each Portfolio may invest up to 10% (without limit for High-Yield
          Portfolio and Flexible Income Portfolio) of its assets in zero coupon,
          pay-in-kind and step coupon securities. Zero coupon bonds are issued
          and traded at a discount from their face value. They do not entitle
          the holder to any periodic payment of interest prior to maturity. Step
          coupon bonds trade at a discount from their face value and pay coupon
          interest. The coupon rate is low for an initial period and then
          increases to a higher coupon rate thereafter. The discount from the
          face amount or par value depends on the time remaining until cash
          payments begin, prevailing interest rates, liquidity of the security
          and the perceived credit quality of the issuer. Pay-in-kind bonds
          normally give the issuer an option to pay cash at a coupon payment
          date or give the holder of the security a similar bond with the same
          coupon rate and a face value equal to the amount of the coupon payment
          that would have been made. For the purposes of any Portfolio's
          restriction on investing in income-producing securities,
          income-producing securities include securities that make periodic
          interest payments as well as those that make interest payments on a
          deferred basis or pay interest only at maturity (e.g., Treasury bills
          or zero coupon bonds).

          Current federal income tax law requires holders of zero coupon
          securities and step coupon securities to report the portion of the
          original issue discount on such securities that accrues during a given
          year as interest income, even though the holders receive no cash
          payments of interest during the year. In order to qualify as a
          "regulated investment company" under the Internal Revenue Code of 1986
          and the regulations thereunder (the "Code"), a Portfolio must
          distribute its investment company taxable income, including the
          original issue discount accrued on zero coupon or step coupon bonds.
          Because a Portfolio will not receive cash payments on a current basis
          in respect of accrued original-issue discount on zero coupon bonds or
          step coupon bonds during the period before interest payments begin, in
          some years that Portfolio may have to distribute cash obtained from
          other sources in order to satisfy the distribution requirements under
          the Code. A Portfolio might obtain such cash from selling other
          portfolio holdings which might cause that Portfolio to incur capital
          gains or losses on the sale. Additionally, these actions are likely to
          reduce the assets to which Portfolio expenses could be allocated and
          to reduce the rate of return for that Portfolio. In some
          circumstances, such sales might be necessary in order to satisfy cash
          distribution requirements even though investment considerations might
          otherwise make it undesirable for a Portfolio to sell the securities
          at the time.

          Generally, the market prices of zero coupon, step coupon and
          pay-in-kind securities are more volatile than the prices of securities
          that pay interest periodically and in cash and are likely to respond
          to changes in interest rates to a greater degree than other types of
          debt securities having similar maturities and credit quality.

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<PAGE>

Pass-Through Securities

          The Portfolios may invest in various types of pass-through securities,
          such as mortgage-backed securities, asset-backed securities and
          participation interests. A pass-through security is a share or
          certificate of interest in a pool of debt obligations that have been
          repackaged by an intermediary, such as a bank or broker-dealer. The
          purchaser of a pass-through security receives an undivided interest in
          the underlying pool of securities. The issuers of the underlying
          securities make interest and principal payments to the intermediary
          which are passed through to purchasers, such as the Portfolios. The
          most common type of pass-through securities are mortgage-backed
          securities. Government National Mortgage Association ("GNMA")
          Certificates are mortgage-backed securities that evidence an undivided
          interest in a pool of mortgage loans. GNMA Certificates differ from
          bonds in that principal is paid back monthly by the borrowers over the
          term of the loan rather than returned in a lump sum at maturity. A
          Portfolio will generally purchase "modified pass-through" GNMA
          Certificates, which entitle the holder to receive a share of all
          interest and principal payments paid and owned on the mortgage pool,
          net of fees paid to the "issuer" and GNMA, regardless of whether or
          not the mortgagor actually makes the payment. GNMA Certificates are
          backed as to the timely payment of principal and interest by the full
          faith and credit of the U.S. government.

          The Federal Home Loan Mortgage Corporation ("FHLMC") issues two types
          of mortgage pass-through securities: mortgage participation
          certificates ("PCs") and guaranteed mortgage certificates ("GMCs").
          PCs resemble GNMA Certificates in that each PC represents a pro rata
          share of all interest and principal payments made and owned on the
          underlying pool. FHLMC guarantees timely payments of interest on PCs
          and the full return of principal. GMCs also represent a pro rata
          interest in a pool of mortgages. However, these instruments pay
          interest semiannually and return principal once a year in guaranteed
          minimum payments. This type of security is guaranteed by FHLMC as to
          timely payment of principal and interest but it is not guaranteed by
          the full faith and credit of the U.S. government.

          The Federal National Mortgage Association ("FNMA") issues guaranteed
          mortgage pass-through certificates ("FNMA Certificates"). FNMA
          Certificates resemble GNMA Certificates in that each FNMA Certificate
          represents a pro rata share of all interest and principal payments
          made and owned on the underlying pool. This type of security is
          guaranteed by FNMA as to timely payment of principal and interest but
          it is not guaranteed by the full faith and credit of the U.S.
          government.

          Except for GMCs, each of the mortgage-backed securities described
          above is characterized by monthly payments to the holder, reflecting
          the monthly payments made by the borrowers who received the underlying
          mortgage loans. The payments to the security holders (such as the
          Portfolios), like the payments on the underlying loans, represent both
          principal and interest. Although the underlying mortgage loans are for
          specified periods of time, such as 20 or 30 years, the borrowers can,
          and typically do, pay them off sooner. Thus, the security holders
          frequently receive prepayments of principal in addition to the
          principal that is part of the regular monthly payments. A portfolio
          manager will consider estimated prepayment rates in calculating the
          average-weighted maturity of a Portfolio. A borrower is more likely to
          prepay a mortgage that bears a relatively high rate of interest. This
          means that in times of declining interest rates, higher yielding
          mortgage-backed securities held by a Portfolio might be converted to
          cash and that Portfolio will be forced to accept lower interest rates
          when that cash is used to purchase additional securities in the
          mortgage-backed securities sector or in other investment sectors.
          Additionally, prepayments during such periods will limit a Portfolio's
          ability to participate in as large a market gain as may be experienced
          with a comparable security not subject to prepayment.

                                                                               7
<PAGE>

          Asset-backed securities represent interests in pools of consumer loans
          and are backed by paper or accounts receivables originated by banks,
          credit card companies or other providers of credit. Generally, the
          originating bank or credit provider is neither the obligor nor the
          guarantor of the security, and interest and principal payments
          ultimately depend upon payment of the underlying loans by individuals.
          Tax-exempt asset-backed securities include units of beneficial
          interests in pools of purchase contracts, financing leases, and sales
          agreements that may be created when a municipality enters into an
          installment purchase contract or lease with a vendor. Such securities
          may be secured by the assets purchased or leased by the municipality;
          however, if the municipality stops making payments, there generally
          will be no recourse against the vendor. The market for tax-exempt
          asset-backed securities is still relatively new. These obligations are
          likely to involve unscheduled prepayments of principal.

Investment Company Securities

          From time to time, the Portfolios may invest in securities of other
          investment companies, subject to the provisions of Section 12(d)(1) of
          the 1940 Act. The Portfolios may invest in securities of money market
          funds managed by Janus Capital in excess of the limitations of Section
          12(d)(1) under the terms of an SEC exemptive order obtained by Janus
          Capital and the Janus funds.

Depositary Receipts

          The Portfolios may invest in sponsored and unsponsored American
          Depositary Receipts ("ADRs"), which are receipts issued by an American
          bank or trust company evidencing ownership of underlying securities
          issued by a foreign issuer. ADRs, in registered form, are designed for
          use in U.S. securities markets. Unsponsored ADRs may be created
          without the participation of the foreign issuer. Holders of these ADRs
          generally bear all the costs of the ADR facility, whereas foreign
          issuers typically bear certain costs in a sponsored ADR. The bank or
          trust company depositary of an unsponsored ADR may be under no
          obligation to distribute shareholder communications received from the
          foreign issuer or to pass through voting rights. The Portfolios may
          also invest in European Depositary Receipts ("EDRs"), Global
          Depositary Receipts ("GDRs") and in other similar instruments
          representing securities of foreign companies. EDRs are receipts issued
          by a European financial institution evidencing an arrangement similar
          to that of ADRs. EDRs, in bearer form, are designed for use in
          European securities markets. GDRs are securities convertible into
          equity securities of foreign issuers. Depositary Receipts are
          generally subject to the same sort of risks as direct investments in a
          foreign country, such as, currency risk, political and economic risk,
          and market risk, because their values depend on the performance of a
          foreign security denominated in its home currency. The risks of
          foreign investing are addressed in some detail in the Portfolios'
          prospectus.

Municipal Obligations

          The Portfolios may invest in municipal obligations issued by states,
          territories and possessions of the United States and the District of
          Columbia. The value of municipal obligations can be affected by
          changes in their actual or perceived credit quality. The credit
          quality of municipal obligations can be affected by, among other
          things, the financial condition of the issuer or guarantor, the
          issuer's future borrowing plans and sources of revenue, the economic
          feasibility of the revenue bond project or general borrowing purpose,
          political or economic developments in the region where the security is
          issued, and the liquidity of the security. Because municipal
          securities are generally traded over-the-counter, the liquidity of a
          particular issue often depends on the willingness of dealers to make a
          market in the security. The liquidity of some municipal obligations
          may be enhanced by demand features, which would enable a Portfolio to
          demand payment on short notice from the issuer or a financial
          intermediary.

 8
<PAGE>

Other Income-Producing Securities

          Other types of income producing securities that the Portfolios may
          purchase include, but are not limited to, the following types of
          securities:

          VARIABLE AND FLOATING RATE OBLIGATIONS. These types of securities have
          variable or floating rates of interest and, under certain limited
          circumstances, may have varying principal amounts. These securities
          pay interest at rates that are adjusted periodically according to a
          specified formula, usually with reference to some interest rate index
          or market interest rate. The floating rate tends to decrease the
          security's price sensitivity to changes in interest rates. These types
          of securities are relatively long-term instruments that often carry
          demand features permitting the holder to demand payment of principal
          at any time or at specified intervals prior to maturity. In order to
          most effectively use these investments, a portfolio manager must
          correctly assess probable movements in interest rates. This involves
          different skills than those used to select most portfolio securities.
          If the portfolio manager incorrectly forecasts such movements, a
          Portfolio could be adversely affected by the use of variable or
          floating rate obligations.

          STANDBY COMMITMENTS. These instruments, which are similar to a put,
          give a Portfolio the option to obligate a broker, dealer or bank to
          repurchase a security held by that Portfolio at a specified price.

          TENDER OPTION BONDS. Tender option bonds are relatively long-term
          bonds that are coupled with the agreement of a third party (such as a
          broker, dealer or bank) to grant the holders of such securities the
          option to tender the securities to the institution at periodic
          intervals.

          INVERSE FLOATERS. Inverse floaters are debt instruments whose interest
          bears an inverse relationship to the interest rate on another
          security. No Portfolio will invest more than 5% of its assets in
          inverse floaters. Similar to variable and floating rate obligations,
          effective use of inverse floaters requires skills different from those
          needed to select most portfolio securities. If movements in interest
          rates are incorrectly anticipated, a fund could lose money or its NAV
          could decline by the use of inverse floaters.

          STRIP BONDS. Strip bonds are debt securities that are stripped of
          their interest (usually by a financial intermediary) after the
          securities are issued. The market value of these securities generally
          fluctuates more in response to changes in interest rates than
          interest-paying securities of comparable maturity.

          The Portfolios will purchase standby commitments, tender option bonds
          and instruments with demand features primarily for the purpose of
          increasing the liquidity of their holdings.

Repurchase and Reverse Repurchase Agreements

          In a repurchase agreement, a Portfolio purchases a security and
          simultaneously commits to resell that security to the seller at an
          agreed upon price on an agreed upon date within a number of days
          (usually not more than seven) from the date of purchase. The resale
          price consists of the purchase price plus an agreed upon incremental
          amount that is unrelated to the coupon rate or maturity of the
          purchased security. A repurchase agreement involves the obligation of
          the seller to pay the agreed upon price, which obligation is in effect
          secured by the value (at least equal to the amount of the agreed upon
          resale price and marked-to-market daily) of the underlying security or
          "collateral." A risk associated with repurchase agreements is the
          failure of the seller to repurchase the securities as agreed, which
          may cause a Portfolio to suffer a loss if the market value of such
          securities declines before they can be liquidated on the open market.
          In the event of bankruptcy or insolvency of the seller, a Portfolio
          may encounter delays and incur costs in liquidating the underlying
          security. Repurchase agreements that mature in more than seven days
          are subject to the 15% limit on illiquid investments. While it is not
          possible to eliminate all risks from these transactions, it

                                                                               9
<PAGE>

          is the policy of the Portfolios to limit repurchase agreements to
          those parties whose creditworthiness has been reviewed and found
          satisfactory by Janus Capital.

          A Portfolio may use reverse repurchase agreements to obtain cash to
          satisfy unusually heavy redemption requests or for other temporary or
          emergency purposes without the necessity of selling portfolio
          securities, or to earn additional income on portfolio securities, such
          as Treasury bills or notes. In a reverse repurchase agreement, a
          Portfolio sells a portfolio security to another party, such as a bank
          or broker-dealer, in return for cash and agrees to repurchase the
          instrument at a particular price and time. While a reverse repurchase
          agreement is outstanding, a Portfolio will maintain cash and
          appropriate liquid assets in a segregated custodial account to cover
          its obligation under the agreement. The Portfolios will enter into
          reverse repurchase agreements only with parties that Janus Capital
          deems creditworthy. Using reverse repurchase agreements to earn
          additional income involves the risk that the interest earned on the
          invested proceeds is less than the expense of the reverse repurchase
          agreement transaction. This technique may also have a leveraging
          effect on the Portfolio, although the Portfolio's intent to segregate
          assets in the amount of the reverse repurchase agreement minimizes
          this effect.

High-Yield/High-Risk Securities

          Flexible Income Portfolio and High-Yield Portfolio may invest without
          limit in securities that are rated below investment grade (e.g.,
          securities rated BB or lower by Standard & Poor's Ratings Services or
          Ba or lower by Moody's Investors Service, Inc.). No other Portfolio
          intends to invest 35% or more of its net assets in such securities.
          Lower rated securities involve a higher degree of credit risk, which
          is the risk that the issuer will not make interest or principal
          payments when due. In the event of an unanticipated default, a
          Portfolio would experience a reduction in its income, and could expect
          a decline in the market value of the securities so affected.

          Any Portfolio may also invest in unrated debt securities of foreign
          and domestic issuers. Unrated debt, while not necessarily of lower
          quality than rated securities, may not have as broad a market. Because
          of the size and perceived demand of the issue, among other factors,
          certain municipalities may not incur the costs of obtaining a rating.
          A Portfolio's manager will analyze the creditworthiness of the issuer,
          as well as any financial institution or other party responsible for
          payments on the security, in determining whether to purchase unrated
          municipal bonds. Unrated debt securities will be included in the 35%
          limit of each Portfolio unless its manager deems such securities to be
          the equivalent of investment grade securities.

          Subject to the above limits, each Portfolio may purchase defaulted
          securities only when its portfolio manager believes, based upon
          analysis of the financial condition, results of operations and
          economic outlook of an issuer, that there is potential for resumption
          of income payments and that the securities offer an unusual
          opportunity for capital appreciation. Notwithstanding the portfolio
          manager's belief about the resumption of income, however, the purchase
          of any security on which payment of interest or dividends is suspended
          involves a high degree of risk. Such risk includes, among other
          things, the following:

          Financial and Market Risks. Investments in securities that are in
          default involve a high degree of financial and market risks that can
          result in substantial or, at times, even total losses. Issuers of
          defaulted securities may have substantial capital needs and may become
          involved in bankruptcy or reorganization proceedings. Among the
          problems involved in investments in such issuers is the fact that it
          may be difficult to obtain information about the condition of such
          issuers. The market prices of such securities also are subject to
          abrupt and erratic movements and above average price volatility, and
          the spread between the bid and asked prices of such securities may be
          greater than normally expected.

 10
<PAGE>

          Disposition of Portfolio Securities. Although these Portfolios
          generally will purchase securities for which their portfolio managers
          expect an active market to be maintained, defaulted securities may be
          less actively traded than other securities and it may be difficult to
          dispose of substantial holdings of such securities at prevailing
          market prices. The Portfolios will limit holdings of any such
          securities to amounts that the portfolio managers believe could be
          readily sold, and holdings of such securities would, in any event, be
          limited so as not to limit the Portfolios' ability to readily dispose
          of securities to meet redemptions.

          Other. Defaulted securities require active monitoring and may, at
          times, require participation in bankruptcy or receivership proceedings
          on behalf of the Portfolios.

Futures, Options and Other Derivative Instruments

          FUTURES CONTRACTS. The Portfolios may enter into contracts for the
          purchase or sale for future delivery of fixed-income securities,
          foreign currencies or contracts based on financial indices, including
          indices of U.S. government securities, foreign government securities,
          equity or fixed-income securities. U.S. futures contracts are traded
          on exchanges which have been designated "contract markets" by the CFTC
          and must be executed through a futures commission merchant ("FCM"), or
          brokerage firm, which is a member of the relevant contract market.
          Through their clearing corporations, the exchanges guarantee
          performance of the contracts as between the clearing members of the
          exchange.

          The buyer or seller of a futures contract is not required to deliver
          or pay for the underlying instrument unless the contract is held until
          the delivery date. However, both the buyer and seller are required to
          deposit "initial margin" for the benefit of the FCM when the contract
          is entered into. Initial margin deposits are equal to a percentage of
          the contract's value, as set by the exchange on which the contract is
          traded, and may be maintained in cash or certain other liquid assets
          by the Portfolios' custodian or subcustodian for the benefit of the
          FCM. Initial margin payments are similar to good faith deposits or
          performance bonds. Unlike margin extended by a securities broker,
          initial margin payments do not constitute purchasing securities on
          margin for purposes of the Portfolio's investment limitations. If the
          value of either party's position declines, that party will be required
          to make additional "variation margin" payments for the benefit of the
          FCM to settle the change in value on a daily basis. The party that has
          a gain may be entitled to receive all or a portion of this amount. In
          the event of the bankruptcy of the FCM that holds margin on behalf of
          a Portfolio, that Portfolio may be entitled to return of margin owed
          to such Portfolio only in proportion to the amount received by the
          FCM's other customers. Janus Capital will attempt to minimize the risk
          by careful monitoring of the creditworthiness of the FCMs with which
          the Portfolios do business and by depositing margin payments in a
          segregated account with the Portfolios' custodian.

          The Portfolios intend to comply with guidelines of eligibility for
          exclusion from the definition of the term "commodity pool operator"
          adopted by the CFTC and the National Futures Association, which
          regulate trading in the futures markets. The Portfolios will use
          futures contracts and related options primarily for bona fide hedging
          purposes within the meaning of CFTC regulations. To the extent that
          the Portfolios hold positions in futures contracts and related options
          that do not fall within the definition of bona fide hedging
          transactions, the aggregate initial margin and premiums required to
          establish such positions will not exceed 5% of the fair market value
          of a Portfolio's net assets, after taking into account unrealized
          profits and unrealized losses on any such contracts it has entered
          into.

          Although a Portfolio will segregate cash and liquid assets in an
          amount sufficient to cover its open futures obligations, the
          segregated assets would be available to that Portfolio immediately
          upon closing out the futures position, while settlement of securities
          transactions could take several days. However, because a

                                                                              11
<PAGE>

          Portfolio's cash that may otherwise be invested would be held
          uninvested or invested in other liquid assets so long as the futures
          position remains open, such Portfolio's return could be diminished due
          to the opportunity losses of foregoing other potential investments.

          A Portfolio's primary purpose in entering into futures contracts is to
          protect that Portfolio from fluctuations in the value of securities or
          interest rates without actually buying or selling the underlying debt
          or equity security. For example, if the Portfolio anticipates an
          increase in the price of stocks, and it intends to purchase stocks at
          a later time, that Portfolio could enter into a futures contract to
          purchase a stock index as a temporary substitute for stock purchases.
          If an increase in the market occurs that influences the stock index as
          anticipated, the value of the futures contracts will increase, thereby
          serving as a hedge against that Portfolio not participating in a
          market advance. This technique is sometimes known as an anticipatory
          hedge. To the extent a Portfolio enters into futures contracts for
          this purpose, the segregated assets maintained to cover such
          Portfolio's obligations with respect to the futures contracts will
          consist of liquid assets from its portfolio in an amount equal to the
          difference between the contract price and the aggregate value of the
          initial and variation margin payments made by that Portfolio with
          respect to the futures contracts. Conversely, if a Portfolio holds
          stocks and seeks to protect itself from a decrease in stock prices,
          the Portfolio might sell stock index futures contracts, thereby hoping
          to offset the potential decline in the value of its portfolio
          securities by a corresponding increase in the value of the futures
          contract position. A Portfolio could protect against a decline in
          stock prices by selling portfolio securities and investing in money
          market instruments, but the use of futures contracts enables it to
          maintain a defensive position without having to sell portfolio
          securities.

          If a Portfolio owns Treasury bonds and the portfolio manager expects
          interest rates to increase, that Portfolio may take a short position
          in interest rate futures contracts. Taking such a position would have
          much the same effect as that Portfolio selling Treasury bonds in its
          portfolio. If interest rates increase as anticipated, the value of the
          Treasury bonds would decline, but the value of that Portfolio's
          interest rate futures contract will increase, thereby keeping the net
          asset value of that Portfolio from declining as much as it may have
          otherwise. If, on the other hand, a portfolio manager expects interest
          rates to decline, that Portfolio may take a long position in interest
          rate futures contracts in anticipation of later closing out the
          futures position and purchasing the bonds. Although a Portfolio can
          accomplish similar results by buying securities with long maturities
          and selling securities with short maturities, given the greater
          liquidity of the futures market than the cash market, it may be
          possible to accomplish the same result more easily and more quickly by
          using futures contracts as an investment tool to reduce risk.

          The ordinary spreads between prices in the cash and futures markets,
          due to differences in the nature of those markets, are subject to
          distortions. First, all participants in the futures market are subject
          to initial margin and variation margin requirements. Rather than
          meeting additional variation margin requirements, investors may close
          out futures contracts through offsetting transactions which could
          distort the normal price relationship between the cash and futures
          markets. Second, the liquidity of the futures market depends on
          participants entering into offsetting transactions rather than making
          or taking delivery of the instrument underlying a futures contract. To
          the extent participants decide to make or take delivery, liquidity in
          the futures market could be reduced and prices in the futures market
          distorted. Third, from the point of view of speculators, the margin
          deposit requirements in the futures market are less onerous than
          margin requirements in the securities market. Therefore, increased
          participation by speculators in the futures market may cause temporary
          price distortions. Due to the possibility of the foregoing
          distortions, a correct forecast of general price trends by a portfolio
          manager still may not result in a successful use of futures.

 12
<PAGE>

          Futures contracts entail risks. Although the Portfolios believe that
          use of such contracts will benefit the Portfolios, a Portfolio's
          overall performance could be worse than if such Portfolio had not
          entered into futures contracts if the portfolio manager's investment
          judgement proves incorrect. For example, if a Portfolio has hedged
          against the effects of a possible decrease in prices of securities
          held in its portfolio and prices increase instead, that Portfolio will
          lose part or all of the benefit of the increased value of these
          securities because of offsetting losses in its futures positions. In
          addition, if a Portfolio has insufficient cash, it may have to sell
          securities from its portfolio to meet daily variation margin
          requirements. Those sales may be, but will not necessarily be, at
          increased prices which reflect the rising market and may occur at a
          time when the sales are disadvantageous to such Portfolio.

          The prices of futures contracts depend primarily on the value of their
          underlying instruments. Because there are a limited number of types of
          futures contracts, it is possible that the standardized futures
          contracts available to a Portfolio will not match exactly such
          Portfolio's current or potential investments. A Portfolio may buy and
          sell futures contracts based on underlying instruments with different
          characteristics from the securities in which it typically
          invests - for example, by hedging investments in portfolio securities
          with a futures contract based on a broad index of securities - which
          involves a risk that the futures position will not correlate precisely
          with the performance of such Portfolio's investments.

          Futures prices can also diverge from the prices of their underlying
          instruments, even if the underlying instruments closely correlate with
          a Portfolio's investments. Futures prices are affected by factors such
          as current and anticipated short-term interest rates, changes in
          volatility of the underlying instruments and the time remaining until
          expiration of the contract. Those factors may affect securities prices
          differently from futures prices. Imperfect correlations between a
          Portfolio's investments and its futures positions also may result from
          differing levels of demand in the futures markets and the securities
          markets, from structural differences in how futures and securities are
          traded, and from imposition of daily price fluctuation limits for
          futures contracts. A Portfolio may buy or sell futures contracts with
          a greater or lesser value than the securities it wishes to hedge or is
          considering purchasing in order to attempt to compensate for
          differences in historical volatility between the futures contract and
          the securities, although this may not be successful in all cases. If
          price changes in a Portfolio's futures positions are poorly correlated
          with its other investments, its futures positions may fail to produce
          desired gains or result in losses that are not offset by the gains in
          that Portfolio's other investments.

          Because futures contracts are generally settled within a day from the
          date they are closed out, compared with a settlement period of three
          days for some types of securities, the futures markets can provide
          superior liquidity to the securities markets. Nevertheless, there is
          no assurance that a liquid secondary market will exist for any
          particular futures contract at any particular time. In addition,
          futures exchanges may establish daily price fluctuation limits for
          futures contracts and may halt trading if a contract's price moves
          upward or downward more than the limit in a given day. On volatile
          trading days when the price fluctuation limit is reached, it may be
          impossible for a Portfolio to enter into new positions or close out
          existing positions. If the secondary market for a futures contract is
          not liquid because of price fluctuation limits or otherwise, a
          Portfolio may not be able to promptly liquidate unfavorable futures
          positions and potentially could be required to continue to hold a
          futures position until the delivery date, regardless of changes in its
          value. As a result, such Portfolio's access to other assets held to
          cover its futures positions also could be impaired.

          OPTIONS ON FUTURES CONTRACTS. The Portfolios may buy and write put and
          call options on futures contracts. An option on a future gives a
          Portfolio the right (but not the obligation) to buy or sell a futures
          contract at a specified price on or before a specified date. The
          purchase of a call option on a futures

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<PAGE>

          contract is similar in some respects to the purchase of a call option
          on an individual security. Depending on the pricing of the option
          compared to either the price of the futures contract upon which it is
          based or the price of the underlying instrument, ownership of the
          option may or may not be less risky than ownership of the futures
          contract or the underlying instrument. As with the purchase of futures
          contracts, when a Portfolio is not fully invested it may buy a call
          option on a futures contract to hedge against a market advance.

          The writing of a call option on a futures contract constitutes a
          partial hedge against declining prices of the security or foreign
          currency which is deliverable under, or of the index comprising, the
          futures contract. If the futures price at the expiration of the option
          is below the exercise price, a Portfolio will retain the full amount
          of the option premium which provides a partial hedge against any
          decline that may have occurred in that Portfolio's holdings. The
          writing of a put option on a futures contract constitutes a partial
          hedge against increasing prices of the security or foreign currency
          which is deliverable under, or of the index comprising, the futures
          contract. If the futures price at expiration of the option is higher
          than the exercise price, a Portfolio will retain the full amount of
          the option premium which provides a partial hedge against any increase
          in the price of securities which that Portfolio is considering buying.
          If a call or put option a Portfolio has written is exercised, such
          Portfolio will incur a loss which will be reduced by the amount of the
          premium it received. Depending on the degree of correlation between
          the change in the value of its portfolio securities and changes in the
          value of the futures positions, a Portfolio's losses from existing
          options on futures may to some extent be reduced or increased by
          changes in the value of portfolio securities.

          The purchase of a put option on a futures contract is similar in some
          respects to the purchase of protective put options on portfolio
          securities. For example, a Portfolio may buy a put option on a futures
          contract to hedge its portfolio against the risk of falling prices or
          rising interest rates.

          The amount of risk a Portfolio assumes when it buys an option on a
          futures contract is the premium paid for the option plus related
          transaction costs. In addition to the correlation risks discussed
          above, the purchase of an option also entails the risk that changes in
          the value of the underlying futures contract will not be fully
          reflected in the value of the options bought.

          FORWARD CONTRACTS. A forward contract is an agreement between two
          parties in which one party is obligated to deliver a stated amount of
          a stated asset at a specified time in the future and the other party
          is obligated to pay a specified amount for the assets at the time of
          delivery. The Portfolios may enter into forward contracts to purchase
          and sell government securities, equity or income securities, foreign
          currencies or other financial instruments. Forward contracts generally
          are traded in an interbank market conducted directly between traders
          (usually large commercial banks) and their customers. Unlike futures
          contracts, which are standardized contracts, forward contracts can be
          specifically drawn to meet the needs of the parties that enter into
          them. The parties to a forward contract may agree to offset or
          terminate the contract before its maturity, or may hold the contract
          to maturity and complete the contemplated exchange.

          The following discussion summarizes the Portfolios' principal uses of
          forward foreign currency exchange contracts ("forward currency
          contracts"). A Portfolio may enter into forward currency contracts
          with stated contract values of up to the value of that Portfolio's
          assets. A forward currency contract is an obligation to buy or sell an
          amount of a specified currency for an agreed price (which may be in
          U.S. dollars or a foreign currency). A Portfolio will exchange foreign
          currencies for U.S. dollars and for other foreign currencies in the
          normal course of business and may buy and sell currencies through
          forward currency contracts in order to fix a price for securities it
          has agreed to buy or sell ("transaction hedge"). A Portfolio

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<PAGE>

          also may hedge some or all of its investments denominated in a foreign
          currency or exposed to foreign currency fluctuations against a decline
          in the value of that currency relative to the U.S. dollar by entering
          into forward currency contracts to sell an amount of that currency (or
          a proxy currency whose performance is expected to replicate or exceed
          the performance of that currency relative to the U.S. dollar)
          approximating the value of some or all of its portfolio securities
          denominated in that currency ("position hedge") or by participating in
          options or futures contracts with respect to the currency. A Portfolio
          also may enter into a forward currency contract with respect to a
          currency where the Portfolio is considering the purchase or sale of
          investments denominated in that currency but has not yet selected the
          specific investments ("anticipatory hedge"). In any of these
          circumstances a Portfolio may, alternatively, enter into a forward
          currency contract to purchase or sell one foreign currency for a
          second currency that is expected to perform more favorably relative to
          the U.S. dollar if the portfolio manager believes there is a
          reasonable degree of correlation between movements in the two
          currencies ("cross-hedge").

          These types of hedging minimize the effect of currency appreciation as
          well as depreciation, but do not eliminate fluctuations in the
          underlying U.S. dollar equivalent value of the proceeds of or rates of
          return on a Portfolio's foreign currency denominated portfolio
          securities. The matching of the increase in value of a forward
          contract and the decline in the U.S. dollar equivalent value of the
          foreign currency denominated asset that is the subject of the hedge
          generally will not be precise. Shifting a Portfolio's currency
          exposure from one foreign currency to another removes that Portfolio's
          opportunity to profit from increases in the value of the original
          currency and involves a risk of increased losses to such Portfolio if
          its portfolio manager's projection of future exchange rates is
          inaccurate. Proxy hedges and cross-hedges may result in losses if the
          currency used to hedge does not perform similarly to the currency in
          which hedged securities are denominated. Unforeseen changes in
          currency prices may result in poorer overall performance for a
          Portfolio than if it had not entered into such contracts.

          The Portfolios will cover outstanding forward currency contracts by
          maintaining liquid portfolio securities denominated in or whose value
          is tied to the currency underlying the forward contract or the
          currency being hedged. To the extent that a Portfolio is not able to
          cover its forward currency positions with underlying portfolio
          securities, the Portfolios' custodian will segregate cash or other
          liquid assets having a value equal to the aggregate amount of such
          Portfolio's commitments under forward contracts entered into with
          respect to position hedges, cross-hedges and anticipatory hedges. If
          the value of the securities used to cover a position or the value of
          segregated assets declines, a Portfolio will find alternative cover or
          segregate additional cash or other liquid assets on a daily basis so
          that the value of the covered and segregated assets will be equal to
          the amount of such Portfolio's commitments with respect to such
          contracts. As an alternative to segregating assets, a Portfolio may
          buy call options permitting such Portfolio to buy the amount of
          foreign currency being hedged by a forward sale contract or a
          Portfolio may buy put options permitting it to sell the amount of
          foreign currency subject to a forward buy contract.

          While forward contracts are not currently regulated by the CFTC, the
          CFTC may in the future assert authority to regulate forward contracts.
          In such event, the Portfolios' ability to utilize forward contracts
          may be restricted. In addition, a Portfolio may not always be able to
          enter into forward contracts at attractive prices and may be limited
          in its ability to use these contracts to hedge Portfolio assets.

          OPTIONS ON FOREIGN CURRENCIES. The Portfolios may buy and write
          options on foreign currencies in a manner similar to that in which
          futures or forward contracts on foreign currencies will be utilized.
          For example, a decline in the U.S. dollar value of a foreign currency
          in which portfolio securities are denominated will reduce the U.S.
          dollar value of such securities, even if their value in the foreign
          currency remains constant. In order to protect against such
          diminutions in the value of portfolio securities, a

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          Portfolio may buy put options on the foreign currency. If the value of
          the currency declines, such Portfolio will have the right to sell such
          currency for a fixed amount in U.S. dollars, thereby offsetting, in
          whole or in part, the adverse effect on its portfolio.

          Conversely, when a rise in the U.S. dollar value of a currency in
          which securities to be acquired are denominated is projected, thereby
          increasing the cost of such securities, a Portfolio may buy call
          options on the foreign currency. The purchase of such options could
          offset, at least partially, the effects of the adverse movements in
          exchange rates. As in the case of other types of options, however, the
          benefit to a Portfolio from purchases of foreign currency options will
          be reduced by the amount of the premium and related transaction costs.
          In addition, if currency exchange rates do not move in the direction
          or to the extent projected, a Portfolio could sustain losses on
          transactions in foreign currency options that would require such
          Portfolio to forego a portion or all of the benefits of advantageous
          changes in those rates.

          The Portfolios may also write options on foreign currencies. For
          example, to hedge against a potential decline in the U.S. dollar value
          of foreign currency denominated securities due to adverse fluctuations
          in exchange rates, a Portfolio could, instead of purchasing a put
          option, write a call option on the relevant currency. If the expected
          decline occurs, the option will most likely not be exercised and the
          decline in value of portfolio securities will be offset by the amount
          of the premium received.

          Similarly, instead of purchasing a call option to hedge against a
          potential increase in the U.S. dollar cost of securities to be
          acquired, a Portfolio could write a put option on the relevant
          currency which, if rates move in the manner projected, should expire
          unexercised and allow that Portfolio to hedge the increased cost up to
          the amount of the premium. As in the case of other types of options,
          however, the writing of a foreign currency option will constitute only
          a partial hedge up to the amount of the premium. If exchange rates do
          not move in the expected direction, the option may be exercised and a
          Portfolio would be required to buy or sell the underlying currency at
          a loss which may not be offset by the amount of the premium. Through
          the writing of options on foreign currencies, a Portfolio also may
          lose all or a portion of the benefits which might otherwise have been
          obtained from favorable movements in exchange rates.

          The Portfolios may write covered call options on foreign currencies. A
          call option written on a foreign currency by a Portfolio is "covered"
          if that Portfolio owns the foreign currency underlying the call or has
          an absolute and immediate right to acquire that foreign currency
          without additional cash consideration (or for additional cash
          consideration held in a segregated account by its custodian) upon
          conversion or exchange of other foreign currencies held in its
          portfolio. A call option is also covered if a Portfolio has a call on
          the same foreign currency in the same principal amount as the call
          written if the exercise price of the call held (i) is equal to or less
          than the exercise price of the call written or (ii) is greater than
          the exercise price of the call written, if the difference is
          maintained by such Portfolio in cash or other liquid assets in a
          segregated account with the Portfolios' custodian.

          The Portfolios also may write call options on foreign currencies for
          cross-hedging purposes. A call option on a foreign currency is for
          cross-hedging purposes if it is designed to provide a hedge against a
          decline due to an adverse change in the exchange rate in the U.S.
          dollar value of a security which a Portfolio owns or has the right to
          acquire and which is denominated in the currency underlying the
          option. Call options on foreign currencies which are entered into for
          cross-hedging purposes are not covered. However, in such
          circumstances, a Portfolio will collateralize the option by
          segregating cash or other liquid assets in an amount not less than the
          value of the underlying foreign currency in U.S. dollars
          marked-to-market daily.

          OPTIONS ON SECURITIES. In an effort to increase current income and to
          reduce fluctuations in net asset value, the Portfolios may write
          covered put and call options and buy put and call options on
          securities

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<PAGE>

          that are traded on United States and foreign securities exchanges and
          over-the-counter. The Portfolios may write and buy options on the same
          types of securities that the Portfolios may purchase directly.

          A put option written by a Portfolio is "covered" if that Portfolio (i)
          segregates cash not available for investment or other liquid assets
          with a value equal to the exercise price of the put with the
          Portfolios' custodian or (ii) holds a put on the same security and in
          the same principal amount as the put written and the exercise price of
          the put held is equal to or greater than the exercise price of the put
          written. The premium paid by the buyer of an option will reflect,
          among other things, the relationship of the exercise price to the
          market price and the volatility of the underlying security, the
          remaining term of the option, supply and demand and interest rates.

          A call option written by a Portfolio is "covered" if that Portfolio
          owns the underlying security covered by the call or has an absolute
          and immediate right to acquire that security without additional cash
          consideration (or for additional cash consideration held in a
          segregated account by the Portfolios' custodian) upon conversion or
          exchange of other securities held in its portfolio. A call option is
          also deemed to be covered if a Portfolio holds a call on the same
          security and in the same principal amount as the call written and the
          exercise price of the call held (i) is equal to or less than the
          exercise price of the call written or (ii) is greater than the
          exercise price of the call written if the difference is maintained by
          that Portfolio in cash and other liquid assets in a segregated account
          with its custodian.

          The Portfolios also may write call options that are not covered for
          cross-hedging purposes. A Portfolio collateralizes its obligation
          under a written call option for cross-hedging purposes by segregating
          cash or other liquid assets in an amount not less than the market
          value of the underlying security, marked-to-market daily. A Portfolio
          would write a call option for cross-hedging purposes, instead of
          writing a covered call option, when the premium to be received from
          the cross-hedge transaction would exceed that which would be received
          from writing a covered call option and its portfolio manager believes
          that writing the option would achieve the desired hedge.

          The writer of an option may have no control over when the underlying
          securities must be sold, in the case of a call option, or bought, in
          the case of a put option, since with regard to certain options, the
          writer may be assigned an exercise notice at any time prior to the
          termination of the obligation. Whether or not an option expires
          unexercised, the writer retains the amount of the premium. This
          amount, of course, may, in the case of a covered call option, be
          offset by a decline in the market value of the underlying security
          during the option period. If a call option is exercised, the writer
          experiences a profit or loss from the sale of the underlying security.
          If a put option is exercised, the writer must fulfill the obligation
          to buy the underlying security at the exercise price, which will
          usually exceed the then market value of the underlying security.

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

          In the case of a written call option, effecting a closing transaction
          will permit a Portfolio to write another call option on the underlying
          security with either a different exercise price or expiration date or
          both. In the case of a written put option, such transaction will
          permit a Portfolio to write another put option to the

                                                                              17
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          extent that the exercise price is secured by deposited liquid assets.
          Effecting a closing transaction also will permit a Portfolio to use
          the cash or proceeds from the concurrent sale of any securities
          subject to the option for other investments. If a Portfolio desires to
          sell a particular security from its portfolio on which it has written
          a call option, such Portfolio will effect a closing transaction prior
          to or concurrent with the sale of the security.

          A Portfolio will realize a profit from a closing transaction if the
          price of the purchase transaction is less than the premium received
          from writing the option or the price received from a sale transaction
          is more than the premium paid to buy the option. A Portfolio will
          realize a loss from a closing transaction if the price of the purchase
          transaction is more than the premium received from writing the option
          or the price received from a sale transaction is less than the premium
          paid to buy the option. Because increases in the market of a call
          option generally will reflect increases in the market price of the
          underlying security, any loss resulting from the repurchase of a call
          option is likely to be offset in whole or in part by appreciation of
          the underlying security owned by a Portfolio.

          An option position may be closed out only where a secondary market for
          an option of the same series exists. If a secondary market does not
          exist, the Portfolio may not be able to effect closing transactions in
          particular options and the Portfolio would have to exercise the
          options in order to realize any profit. If a Portfolio is unable to
          effect a closing purchase transaction in a secondary market, it will
          not be able to sell the underlying security until the option expires
          or it delivers the underlying security upon exercise. The absence of a
          liquid secondary market may be due to the following: (i) insufficient
          trading interest in certain options, (ii) restrictions imposed by a
          national securities exchange ("Exchange") on which the option is
          traded on opening or closing transactions or both, (iii) trading
          halts, suspensions or other restrictions imposed with respect to
          particular classes or series of options or underlying securities, (iv)
          unusual or unforeseen circumstances that interrupt normal operations
          on an Exchange, (v) the facilities of an Exchange or of the Options
          Clearing Corporation ("OCC") may not at all times be adequate to
          handle current trading volume, or (vi) one or more Exchanges could,
          for economic or other reasons, decide or be compelled at some future
          date to discontinue the trading of options (or a particular class or
          series of options), in which event the secondary market on that
          Exchange (or in that class or series of options) would cease to exist,
          although outstanding options on that Exchange that had been issued by
          the OCC as a result of trades on that Exchange would continue to be
          exercisable in accordance with their terms.

          A Portfolio may write options in connection with buy-and-write
          transactions. In other words, a Portfolio may buy a security and then
          write a call option against that security. The exercise price of such
          call will depend upon the expected price movement of the underlying
          security. The exercise price of a call option may be below
          ("in-the-money"), equal to ("at-the-money") or above
          ("out-of-the-money") the current value of the underlying security at
          the time the option is written. Buy-and-write transactions using
          in-the-money call options may be used when it is expected that the
          price of the underlying security will remain flat or decline
          moderately during the option period. Buy-and-write transactions using
          at-the-money call options may be used when it is expected that the
          price of the underlying security will remain fixed or advance
          moderately during the option period. Buy-and-write transactions using
          out-of-the-money call options may be used when it is expected that the
          premiums received from writing the call option plus the appreciation
          in the market price of the underlying security up to the exercise
          price will be greater than the appreciation in the price of the
          underlying security alone. If the call options are exercised in such
          transactions, a Portfolio's maximum gain will be the premium received
          by it for writing the option, adjusted upwards or downwards by the
          difference between that Portfolio's purchase price of the security and
          the exercise price.

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<PAGE>

          If the options are not exercised and the price of the underlying
          security declines, the amount of such decline will be offset by the
          amount of premium received.

          The writing of covered put options is similar in terms of risk and
          return characteristics to buy-and-write transactions. If the market
          price of the underlying security rises or otherwise is above the
          exercise price, the put option will expire worthless and a Portfolio's
          gain will be limited to the premium received. If the market price of
          the underlying security declines or otherwise is below the exercise
          price, a Portfolio may elect to close the position or take delivery of
          the security at the exercise price and that Portfolio's return will be
          the premium received from the put options minus the amount by which
          the market price of the security is below the exercise price.

          A Portfolio may buy put options to hedge against a decline in the
          value of its portfolio. By using put options in this way, a Portfolio
          will reduce any profit it might otherwise have realized in the
          underlying security by the amount of the premium paid for the put
          option and by transaction costs.

          A Portfolio may buy call options to hedge against an increase in the
          price of securities that it may buy in the future. The premium paid
          for the call option plus any transaction costs will reduce the
          benefit, if any, realized by such Portfolio upon exercise of the
          option, and, unless the price of the underlying security rises
          sufficiently, the option may expire worthless to that Portfolio.

          EURODOLLAR INSTRUMENTS. A Portfolio may make investments in Eurodollar
          instruments. Eurodollar instruments are U.S. dollar-denominated
          futures contracts or options thereon which are linked to the London
          Interbank Offered Rate ("LIBOR"), although foreign
          currency-denominated instruments are available from time to time.
          Eurodollar futures contracts enable purchasers to obtain a fixed rate
          for the lending of funds and sellers to obtain a fixed rate for
          borrowings. A Portfolio might use Eurodollar futures contracts and
          options thereon to hedge against changes in LIBOR, to which many
          interest rate swaps and fixed-income instruments are linked.

          SWAPS AND SWAP-RELATED PRODUCTS. A Portfolio may enter into interest
          rate swaps, caps and floors on either an asset-based or
          liability-based basis, depending upon whether it is hedging its assets
          or its liabilities, and will usually enter into interest rate swaps on
          a net basis (i.e., the two payment streams are netted out, with a
          Portfolio receiving or paying, as the case may be, only the net amount
          of the two payments). The net amount of the excess, if any, of a
          Portfolio's obligations over its entitlement with respect to each
          interest rate swap will be calculated on a daily basis and an amount
          of cash or other liquid assets having an aggregate net asset value at
          least equal to the accrued excess will be maintained in a segregated
          account by the Portfolios' custodian. If a Portfolio enters into an
          interest rate swap on other than a net basis, it would maintain a
          segregated account in the full amount accrued on a daily basis of its
          obligations with respect to the swap. A Portfolio will not enter into
          any interest rate swap, cap or floor transaction unless the unsecured
          senior debt or the claims-paying ability of the other party thereto is
          rated in one of the three highest rating categories of at least one
          NRSRO at the time of entering into such transaction. Janus Capital
          will monitor the creditworthiness of all counterparties on an ongoing
          basis. If there is a default by the other party to such a transaction,
          a Portfolio will have contractual remedies pursuant to the agreements
          related to the transaction.

          The swap market has grown substantially in recent years with a large
          number of banks and investment banking firms acting both as principals
          and as agents utilizing standardized swap documentation. Janus Capital
          has determined that, as a result, the swap market has become
          relatively liquid. Caps and floors are more recent innovations for
          which standardized documentation has not yet been developed and,
          accordingly, they are less liquid than swaps. To the extent a
          Portfolio sells (i.e., writes) caps and floors, it

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<PAGE>

          will segregate cash or other liquid assets having an aggregate net
          asset value at least equal to the full amount, accrued on a daily
          basis, of its obligations with respect to any caps or floors.

          There is no limit on the amount of interest rate swap transactions
          that may be entered into by a Portfolio. These transactions may in
          some instances involve the delivery of securities or other underlying
          assets by a Portfolio or its counterparty to collateralize obligations
          under the swap. Under the documentation currently used in those
          markets, the risk of loss with respect to interest rate swaps is
          limited to the net amount of the payments that a Portfolio is
          contractually obligated to make. If the other party to an interest
          rate swap that is not collateralized defaults, a Portfolio would risk
          the loss of the net amount of the payments that it contractually is
          entitled to receive. A Portfolio may buy and sell (i.e., write) caps
          and floors without limitation, subject to the segregation requirement
          described above.

          ADDITIONAL RISKS OF OPTIONS ON FOREIGN CURRENCIES, FORWARD CONTRACTS
          AND FOREIGN INSTRUMENTS. Unlike transactions entered into by the
          Portfolios in futures contracts, options on foreign currencies and
          forward contracts are not traded on contract markets regulated by the
          CFTC or (with the exception of certain foreign currency options) by
          the SEC. To the contrary, such instruments are traded through
          financial institutions acting as market-makers, although foreign
          currency options are also traded on certain Exchanges, such as the
          Philadelphia Stock Exchange and the Chicago Board Options Exchange,
          subject to SEC regulation. Similarly, options on currencies may be
          traded over-the-counter. In an over-the-counter trading environment,
          many of the protections afforded to Exchange participants will not be
          available. For example, there are no daily price fluctuation limits,
          and adverse market movements could therefore continue to an unlimited
          extent over a period of time. Although the buyer of an option cannot
          lose more than the amount of the premium plus related transaction
          costs, this entire amount could be lost. Moreover, an option writer
          and a buyer or seller of futures or forward contracts could lose
          amounts substantially in excess of any premium received or initial
          margin or collateral posted due to the potential additional margin and
          collateral requirements associated with such positions.

          Options on foreign currencies traded on Exchanges are within the
          jurisdiction of the SEC, as are other securities traded on Exchanges.
          As a result, many of the protections provided to traders on organized
          Exchanges will be available with respect to such transactions. In
          particular, all foreign currency option positions entered into on an
          Exchange are cleared and guaranteed by the OCC, thereby reducing the
          risk of counterparty default. Further, a liquid secondary market in
          options traded on an Exchange may be more readily available than in
          the over-the-counter market, potentially permitting a Portfolio to
          liquidate open positions at a profit prior to exercise or expiration,
          or to limit losses in the event of adverse market movements.

          The purchase and sale of exchange-traded foreign currency options,
          however, is subject to the risks of the availability of a liquid
          secondary market described above, as well as the risks regarding
          adverse market movements, margining of options written, the nature of
          the foreign currency market, possible intervention by governmental
          authorities and the effects of other political and economic events. In
          addition, exchange-traded options on foreign currencies involve
          certain risks not presented by the over-the-counter market. For
          example, exercise and settlement of such options must be made
          exclusively through the OCC, which has established banking
          relationships in applicable foreign countries for this purpose. As a
          result, the OCC may, if it determines that foreign governmental
          restrictions or taxes would prevent the orderly settlement of foreign
          currency option exercises, or would result in undue burdens on the OCC
          or its clearing member, impose special procedures on exercise and
          settlement, such as technical changes in the mechanics of delivery of
          currency, the fixing of dollar settlement prices or prohibitions on
          exercise.

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<PAGE>

          In addition, options on U.S. government securities, futures contracts,
          options on futures contracts, forward contracts and options on foreign
          currencies may be traded on foreign exchanges and over-the-counter in
          foreign countries. Such transactions are subject to the risk of
          governmental actions affecting trading in or the prices of foreign
          currencies or securities. The value of such positions also could be
          adversely affected by (i) other complex foreign political and economic
          factors, (ii) lesser availability than in the United States of data on
          which to make trading decisions, (iii) delays in a Portfolio's ability
          to act upon economic events occurring in foreign markets during
          non-business hours in the United States, (iv) the imposition of
          different exercise and settlement terms and procedures and margin
          requirements than in the United States, and (v) low trading volume.

                                                                              21
<PAGE>
Investment adviser

          As stated in the Prospectus, each Portfolio has an Investment Advisory
          Agreement with Janus Capital, 100 Fillmore Street, Denver, Colorado
          80206-4928. Each Advisory Agreement provides that Janus Capital will
          furnish continuous advice and recommendations concerning the
          Portfolios' investments, provide office space for the Portfolios, and
          pay the salaries, fees and expenses of all Portfolio officers and of
          those Trustees who are affiliated with Janus Capital. Janus Capital
          also may make payments to selected broker-dealer firms or institutions
          which were instrumental in the acquisition of shareholders for the
          Portfolios or other Janus Funds or which perform recordkeeping or
          other services with respect to shareholder accounts. The minimum
          aggregate size required for eligibility for such payments, and the
          factors in selecting the broker-dealer firms and institutions to which
          they will be made, are determined from time to time by Janus Capital.
          Janus Capital is also authorized to perform the management and
          administrative services necessary for the operation of the Portfolios.

          The Portfolios pay custodian and transfer agent fees and expenses,
          brokerage commissions and dealer spreads and other expenses in
          connection with the execution of portfolio transactions, legal and
          accounting expenses, interest and taxes, registration fees, expenses
          of shareholders' meetings and reports to shareholders, fees and
          expenses of Portfolio Trustees who are not affiliated with Janus
          Capital and other costs of complying with applicable laws regulating
          the sale of Portfolio shares. Pursuant to the Advisory Agreements,
          Janus Capital furnishes certain other services, including net asset
          value determination, portfolio accounting and recordkeeping, for which
          the Portfolios may reimburse Janus Capital for its costs.


          Growth Portfolio, Aggressive Growth Portfolio, Capital Appreciation
          Portfolio, International Growth Portfolio, Worldwide Growth Portfolio,
          Balanced Portfolio, Equity Income Portfolio and Growth and Income
          Portfolio have each agreed to compensate Janus Capital for its
          services by the monthly payment of a fee at the annual rate of 0.75%
          of the first $300 million of the average daily net assets of each
          Portfolio, 0.70% of the next $200 million of the average daily net
          assets of each Portfolio and 0.65% on the average daily net assets of
          each Portfolio in excess of $500 million. The advisory fee is
          calculated and payable daily. Janus Capital has voluntarily agreed to
          cap the advisory fee of Growth Portfolio, Aggressive Growth Portfolio,
          Capital Appreciation Portfolio, International Growth Portfolio,
          Worldwide Growth Portfolio, Balanced Portfolio, Equity Income
          Portfolio and Growth and Income Portfolio at the effective rate of
          Janus Fund, Janus Enterprise Fund, Janus Olympus Fund, Janus Overseas
          Fund, Janus Worldwide Fund, Janus Balanced Fund, Janus Equity Income
          Fund and Janus Growth and Income Fund (the "retail funds"),
          respectively. The effective rate of each retail fund is the advisory
          fee calculated by such fund on the last day of each calendar quarter.
          If the assets of the corresponding retail fund exceed the assets of a
          Portfolio as of the last day of any calendar quarter, then the
          advisory fee payable by that Portfolio for the following calendar
          quarter will be a flat rate equal to such effective rate. The
          effective rate (annualized) of Janus Fund, Janus Enterprise Fund,
          Janus Twenty Fund, Janus Overseas Fund, Janus Worldwide Fund, Janus
          Balanced Fund, Janus Equity Income Fund and Janus Growth and Income
          Fund were 0.65%, 0.67%, 0.65%, 0.66%, 0.65%, 0.67%, 0.71% and 0.66%,
          respectively, for the quarter ended September 30, 1999. Janus Capital
          has agreed to continue such reductions until at least the next annual
          renewal of the advisory agreements.



          In addition, Janus Capital has agreed to reimburse Equity Income
          Portfolio and Growth and Income Portfolio by the amount, if any, that
          such Portfolio's normal operating expenses in any fiscal year,
          including the investment advisory fee but excluding the distribution
          fee described below, brokerage commissions, interest, taxes and
          extraordinary expenses, exceed an annual rate of 1.25% of the average
          daily net assets of the Portfolio until at least the next annual
          renewal of the advisory agreements. Mortality risk, expense risk and
          other charges imposed by participating insurance companies are also
          excluded from the above expense limitation.


 22
<PAGE>


          High-Yield Portfolio has agreed to compensate Janus Capital for its
          services by the monthly payment of a fee at the annual rate of .75% of
          the first $300 million of average daily net assets of the Portfolio
          and .65% of the average daily net assets in excess of $300 million.
          Flexible Income Portfolio has agreed to compensate Janus Capital for
          its services by the monthly payment of a fee at the annual rate of
          .65% of the first $300 million of the average daily net assets of the
          Portfolio, plus .55% of the average daily net assets of the Portfolio
          in excess of $300 million. The fee is calculated and payable daily.
          Janus Capital has agreed to waive the advisory fee payable by each of
          these Portfolios in an amount equal to the amount, if any, that such
          Portfolio's normal operating expenses in any fiscal year, including
          the investment advisory fee but excluding the distribution fee
          described below, brokerage commissions, interest, taxes and
          extraordinary expenses, exceed 1% of the average daily net assets for
          a fiscal year for Flexible Income Portfolio and High-Yield Portfolio.
          Mortality risk, expense risk and other charges imposed by
          participating insurance companies are also excluded from the above
          expense limitation. Janus Capital has agreed to continue such waivers
          until at least the next annual renewal of the advisory agreements.


          The following table summarizes the advisory fees paid by the
          Portfolios and any advisory fee waivers for the periods indicated. The
          information below is for fiscal years ended December 31.

<TABLE>
<CAPTION>
                                           1998                          1997                         1996
                                --------------------------    --------------------------   --------------------------
        Portfolio Name          Advisory Fees   Waivers(1)    Advisory Fees   Waivers(1)   Advisory Fees   Waivers(1)
- ---------------------------------------------------------------------------------------------------------------------
<S>                             <C>             <C>           <C>             <C>          <C>             <C>
Growth Portfolio                 $ 5,144,931                   $3,119,619           --      $1,410,362           --
Aggressive Growth Portfolio      $ 4,159,741                   $3,036,239           --      $2,102,177           --
Capital Appreciation Portfolio   $   181,285                   $   12,832(2)   $ 9,172(2)           --           --
International Growth Portfolio   $ 1,547,572                   $  645,307           --      $   55,211      $51,880
Worldwide Growth Portfolio       $14,485,092                   $7,532,715           --      $2,015,059           --
Balanced Portfolio               $ 4,020,954                   $1,348,363           --      $  344,791           --
Equity Income Portfolio          $    42,337     $34,357       $    5,959(2)   $ 5,959(2,3)         --           --
Growth and Income Portfolio      $    12,900     $12,900(3,4)          --           --              --           --
Flexible Income Portfolio        $   563,148                   $  237,601           --      $  116,279           --
High-Yield Portfolio             $    24,691     $24,691(3)    $   11,790      $11,790(3)   $    2,304(5)   $ 2,304(3)(5)
</TABLE>

(1) In addition to these fee waivers, Janus Capital has agreed to reduce the
    advisory fee of the Growth, Aggressive Growth, Capital Appreciation,
    International Growth, Worldwide Growth, Balanced, Equity Income Growth and
    Income Portfolios to the extent that such fee exceeds the effective rate of
    the Janus retail fund corresponding to such Portfolio.
(2) May 1, 1997 (inception) to December 31, 1997.
(3) Fee waiver by Janus Capital exceeded the advisory fee.
(4) May 1, 1998 (inception) to December 31, 1998.
(5) May 1, 1996 (inception) to December 31, 1996.

          The Advisory Agreement for each of the Portfolios is dated July 1,
          1997 and will continue in effect from year to year so long as such
          continuance is approved annually by a majority of the Portfolios'
          Trustees who are not parties to the Advisory Agreements or interested
          persons of any such party, and by either a majority of the outstanding
          voting shares or the Trustees of the Portfolios. Each Advisory
          Agreement (i) may be terminated without the payment of any penalty by
          any Portfolio or Janus Capital on 60 days' written notice; (ii)
          terminates automatically in the event of its assignment; and (iii)
          generally, may not be amended without the approval by vote of a
          majority of the Trustees of the affected Portfolio, including the
          Trustees who are not interested persons of that Portfolio or Janus
          Capital and, to the extent required by the 1940 Act, the vote of a
          majority of the outstanding voting securities of that Portfolio.

          Janus Capital acts as sub-adviser for a number of private-label mutual
          funds and provides separate account advisor services for institutional
          accounts. Investment decisions for each account managed by Janus

                                                                              23
<PAGE>

          Capital, including the Portfolios, are made independently from those
          for any other account that is or may in the future become managed by
          Janus Capital or its affiliates. If, however, a number of accounts
          managed by Janus Capital are contemporaneously engaged in the purchase
          or sale of the same security, the orders may be aggregated and/or the
          transactions may be averaged as to price and allocated equitably to
          each account. In some cases, this policy might adversely affect the
          price paid or received by an account or the size of the position
          obtained or liquidated for an account. Pursuant to an exemptive order
          granted by the SEC, the Portfolios and other portfolios advised by
          Janus Capital may also transfer daily uninvested cash balances into
          one or more joint trading accounts. Assets in the joint trading
          accounts are invested in money market instruments and the proceeds are
          allocated to the participating portfolios on a pro rata basis.

          Kansas City Southern Industries, Inc. ("KCSI") owns approximately 82%
          of the outstanding voting stock of Janus Capital, most of which it
          acquired in 1984. KCSI is a publicly traded holding company whose
          primary subsidiaries are engaged in transportation, information
          processing and financial services. Thomas H. Bailey, President and
          Chairman of the Board of Janus Capital, owns approximately 12% of its
          voting stock and, by agreement with KCSI, selects a majority of Janus
          Capital's Board.


          [TO BE UPDATED] KCSI has announced its intention to separate its
          transportation and financial services businesses. KCSI is currently
          studying alternatives for completion of the separation that meet its
          business objectives without risking adverse tax consequences. KCSI
          expects completion of the separation to be contemplated in 1999.


          Each account managed by Janus Capital has its own investment objective
          and policies and is managed accordingly by a particular portfolio
          manager or team of portfolio managers. As a result, from time to time
          two or more different managed accounts may pursue divergent investment
          strategies with respect to investments or categories of investments.

          Janus Capital does not permit the Portfolios' portfolio managers to
          purchase and sell securities for their own accounts except under the
          limited exceptions contained in Janus Capital's policy regarding
          personal investing by directors/Trustees, officers and employees of
          Janus Capital and the Trust. The policy requires investment personnel
          and officers of Janus Capital, inside directors/Trustees of Janus
          Capital and the Portfolios and other designated persons deemed to have
          access to current trading information to pre-clear all transactions in
          securities not otherwise exempt under the policy. Requests for trading
          authority will be denied when, among other reasons, the proposed
          personal transaction would be contrary to the provisions of the policy
          or would be deemed to adversely affect any transaction then known to
          be under consideration for or to have been effected on behalf of any
          client account, including the Portfolios.

          In addition to the pre-clearance requirement described above, the
          policy subjects investment personnel, officers and directors/Trustees
          of Janus Capital and the Trust to various trading restrictions and
          reporting obligations. All reportable transactions are required to be
          reviewed for compliance with Janus Capital's policy. Those persons
          also may be required under certain circumstances to forfeit their
          profits made from personal trading.

          The provisions of the policy are administered by and subject to
          exceptions authorized by Janus Capital.

 24
<PAGE>
Custodian, transfer agent and certain affiliations

          State Street Bank and Trust Company, P.O. Box 0351, Boston,
          Massachusetts 02117-0351 is the custodian of the domestic securities
          and cash of the Portfolios. State Street and the foreign subcustodians
          it selects, have custody of the assets of the Portfolios held outside
          the U.S. and cash incidental thereto. The custodians and subcustodians
          hold the Portfolios' assets in safekeeping and collect and remit the
          income thereon, subject to the instructions of each Portfolio.


          Janus Service Corporation, P.O. Box 173375, Denver, Colorado
          80217-3375, a wholly-owned subsidiary of Janus Capital, is the
          Portfolios' transfer agent. In addition, Janus Service provides
          certain other administrative, recordkeeping and shareholder relations
          services to the Portfolios. Janus Service Corporation is not
          compensated for its services related to the Shares, except for
          out-of-pocket costs.


          The Portfolios pay DST Systems, Inc., a subsidiary of KCSI, license
          fees at the rate of $3.06 per shareholder account for the growth and
          combination portfolios and $3.98 per shareholder account for the
          fixed-income portfolios for the use of DST's shareholder accounting
          system. The Portfolios also pay DST $1.10 per closed shareholder
          account. The Portfolios pay DST for the use of its portfolio and fund
          accounting system a monthly base fee of $250 to $1,250 per month based
          on the number of Janus funds using the system and an asset charge of
          $1 per million dollars of net assets (not to exceed $500 per month).

          The Trustees have authorized the Portfolios to use another affiliate
          of DST as introducing broker for certain Portfolio transactions as a
          means to reduce Portfolio expenses through credits against the charges
          of DST and its affiliates with regard to commissions earned by such
          affiliate. DST charges shown above are net of such credits. See
          "Portfolio Transactions and Brokerage."

          Janus Distributors, Inc., 100 Fillmore Street, Denver, Colorado
          80206-4928, a wholly-owned subsidiary of Janus Capital, is the Trust's
          distributor. Janus Distributors is registered as a broker-dealer under
          the Securities Exchange Act of 1934 and is a member of the National
          Association of Securities Dealers, Inc.

                                                                              25
<PAGE>
Portfolio transactions and brokerage

          Decisions as to the assignment of portfolio business for the
          Portfolios and negotiation of its commission rates are made by Janus
          Capital whose policy is to obtain the "best execution" (prompt and
          reliable execution at the most favorable security price) of all
          portfolio transactions. The Portfolios may trade foreign securities in
          foreign countries because the best available market for these
          securities is often on foreign exchanges. In transactions on foreign
          stock exchanges, brokers' commissions are frequently fixed and are
          often higher than in the United States, where commissions are
          negotiated.

          In selecting brokers and dealers and in negotiating commissions, Janus
          Capital considers a number of factors, including but not limited to:
          Janus Capital's knowledge of currently available negotiated commission
          rates or prices of securities currently available and other current
          transaction costs; the nature of the security being traded; the size
          and type of the transaction; the nature and character of the markets
          for the security to be purchased or sold; the desired timing of the
          trade; the activity existing and expected in the market for the
          particular security; confidentiality; the quality of the execution,
          clearance and settlement services; financial stability of the broker
          or dealer; the existence of actual or apparent operational problems of
          any broker or dealer; rebates of commissions by a broker to a
          Portfolio or to a third party service provider to the Portfolio to pay
          Portfolio expenses; and research products or services provided. In
          recognition of the value of the foregoing factors, Janus Capital may
          place portfolio transactions with a broker or dealer with whom it has
          negotiated a commission that is in excess of the commission another
          broker or dealer would have charged for effecting that transaction if
          Janus Capital determines in good faith that such amount of commission
          was reasonable in relation to the value of the brokerage and research
          provided by such broker or dealer viewed in terms of either that
          particular transaction or of the overall responsibilities of Janus
          Capital. Research may include furnishing advice, either directly or
          through publications or writings, as to the value of securities, the
          advisability of purchasing or selling specific securities and the
          availability of securities or purchasers or sellers of securities;
          furnishing seminars, information, analyses and reports concerning
          issuers, industries, securities, trading markets and methods,
          legislative developments, changes in accounting practices, economic
          factors and trends and portfolio strategy; access to research
          analysts, corporate management personnel, industry experts, economists
          and government officials; comparative performance evaluation and
          technical measurement services and quotation services, and products
          and other services (such as third party publications, reports and
          analyses, and computer and electronic access, equipment, software,
          information and accessories that deliver, process or otherwise utilize
          information, including the research described above) that assist Janus
          Capital in carrying out its responsibilities. Research received from
          brokers or dealers is supplemental to Janus Capital's own research
          efforts. Most brokers and dealers used by Janus Capital provide
          research and other services described above.

 26
<PAGE>

          For the year ended December 31, 1998, the total brokerage commissions
          paid by the Portfolios to brokers and dealers in transactions
          identified for execution primarily on the basis of research and other
          services provided to the Portfolios are summarized below:

<TABLE>
<CAPTION>
Portfolio Name                                                Commissions   Transactions
- ----------------------------------------------------------------------------------------
<S>                                                           <C>           <C>
Growth Portfolio                                               $413,532     $417,034,639
Aggressive Growth Portfolio                                    $486,104     $392,999,344
Capital Appreciation Portfolio                                 $  6,456     $  8,627,008
International Growth Portfolio                                 $ 67,747     $ 21,378,002
Worldwide Growth Portfolio                                     $650,580     $258,735,559
Balanced Portfolio                                             $ 91,836     $ 76,576,730
Equity Income Portfolio                                        $  1,272     $  1,058,786
Growth and Income Portfolio                                    $    642     $    627,984
</TABLE>

Note: Portfolios that are not included in the table did not pay any commissions
      related to research for the stated period.

          Janus Capital may use research products and services in servicing
          other accounts in addition to the Portfolios. If Janus Capital
          determines that any research product or service has a mixed use, such
          that it also serves functions that do not assist in the investment
          decision-making process, Janus Capital may allocate the costs of such
          service or product accordingly. Only that portion of the product or
          service that Janus Capital determines will assist it in the investment
          decision-making process may be paid for in brokerage commission
          dollars. Such allocation may create a conflict of interest for Janus
          Capital.

          Janus Capital does not enter into agreements with any brokers
          regarding the placement of securities transactions because of the
          research services they provide. It does, however, have an internal
          procedure for allocating transactions in a manner consistent with its
          execution policy to brokers that it has identified as providing
          superior executions and research, research-related products or
          services which benefit its advisory clients, including the Portfolios.
          Research products and services incidental to effecting securities
          transactions furnished by brokers or dealers may be used in servicing
          any or all of Janus Capital's clients and such research may not
          necessarily be used by Janus Capital in connection with the accounts
          which paid commissions to the broker-dealer providing such research
          products and services.

          Janus Capital may consider sales of Portfolio Shares or shares of
          other Janus funds by a broker-dealer or the recommendation of a
          broker-dealer to its customers that they purchase Portfolio Shares as
          a factor in the selection of broker-dealers to execute Portfolio
          transactions. Janus Capital may also consider payments made by brokers
          effecting transactions for a Portfolio (i) to the Portfolio or (ii) to
          other persons on behalf of the Portfolio for services provided to the
          Portfolio for which it would be obligated to pay. In placing Portfolio
          business with such broker-dealers, Janus Capital will seek the best
          execution of each transaction.

          When the Portfolios purchase or sell a security in the
          over-the-counter market, the transaction takes place directly with a
          principal market-maker, without the use of a broker, except in those
          circumstances where in the opinion of Janus Capital better prices and
          executions will be achieved through the use of a broker.

          The Portfolios' Trustees have authorized Janus Capital to place
          transactions with DST Securities, Inc. ("DSTS"), a wholly-owned
          broker-dealer subsidiary of DST. Janus Capital may do so if it
          reasonably believes that the quality of the transaction and the
          associated commission are fair and reasonable and if, overall, the
          associated transaction costs, net of any credits described above under
          "Custodian, Transfer Agent and Certain Affiliations," are lower than
          those that would otherwise be incurred.

                                                                              27
<PAGE>

          The following table lists the total amount of brokerage commissions
          paid by each Portfolio for the fiscal periods ending on December 31st
          of each year:

<TABLE>
<CAPTION>
Portfolio Name                                                   1998         1997         1996
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>          <C>          <C>
Growth Portfolio                                              $1,062,104   $1,249,908   $  415,247
Aggressive Growth Portfolio                                   $1,157,439   $  974,825   $  616,051
Capital Appreciation Portfolio                                $   39,464   $    2,570(2)       N/A
International Growth Portfolio                                $  810,115   $  512,690   $   49,472
Worldwide Growth Portfolio                                    $5,334,034   $4,223,192   $1,332,024
Balanced Portfolio                                            $  337,008   $  408,226   $   86,264
Equity Income Portfolio                                       $    6,415   $    1,055(2)       N/A
Growth and Income Portfolio                                   $    3,844(1)       N/A          N/A
Flexible Income Portfolio                                     $    4,050   $    2,841   $        0
High-Yield Portfolio                                          $      679   $      103   $      186(3)
</TABLE>

(1) May 1, 1998 (inception) to December 31, 1998.
(2) May 1, 1997 (inception) to December 31, 1997.
(3) May 1, 1996 (inception) to December 31, 1996.

NOTE: Portfolios that are not included in the table did not pay brokerage
      commissions because securities transactions for such Portfolios involved
      dealers acting as principals.

          Included in such brokerage commissions are the following amounts paid
          to DSTS, which served to reduce each Portfolio's out-of-pocket
          expenses as follows:


<TABLE>
<CAPTION>
                                                                Commission Paid
                                                              through DSTS for the
                                                                  Period Ended       Reduction of    % of Total     % of Total
Portfolio Name                                                 December 31, 1998*     Expenses*     Commissions+   Transactions
- --------------------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>                    <C>            <C>            <C>
Growth Portfolio                                                     $6,937             $5,203         0.65%           0.49%
Aggressive Growth Portfolio                                          $9,626             $7,219         0.83%           0.60%
Capital Appreciation Portfolio                                       $    0             $    0            0%              0%
International Growth Portfolio                                       $    0             $    0            0%              0%
Worldwide Growth Portfolio                                           $    0             $    0            0%              0%
Balanced Portfolio                                                   $    0             $    0            0%              0%
Equity Income Portfolio                                              $    7             $    6         0.12%           0.08%
Growth and Income Portfolio                                          $    0             $    0            0%              0%
</TABLE>


* The difference between commissions paid to DSTS and expenses reduced
  constitute commissions paid to an unaffiliated clearing broker.
+ Differences in the percentage of total commissions versus the percentage of
  total transactions are due, in part, to variations among share prices and
  number of shares traded, while average price per share commission rates were
  substantially the same.

NOTE: Portfolios that did not execute trades with DSTS during the periods
      indicated are not included in the table.


<TABLE>
<CAPTION>
                                                    Commission Paid through
                                                         DSTS for the                              Commission
                                                            Period                             Paid through DSTS
                                                   May 1, 1997 (inception) -   Reduction of   for the Period Ended    Reduction
Portfolio Name                                        December 31, 1997*        Expenses*      October 31, 1996*     of Expenses*
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                                <C>                         <C>            <C>                    <C>
Growth Portfolio                                            $2,819                $2,114             $4,645             $3,484
Aggressive Growth Portfolio                                 $6,780                $5,085             $1,929             $1,447
International Growth Portfolio                              $    0                $    0             $   67             $   51
Worldwide Growth Portfolio                                  $6,697                $5,023             $6,189             $4,642
Balanced Portfolio                                          $  391                $  293             $2,565             $1,924
Equity Income Portfolio                                     $   15                $   11             $    0             $    0
</TABLE>


* The difference between commissions paid through DSTS and expenses reduced
  constitute commissions paid to an unaffiliated clearing broker.

NOTE: Portfolios that did not execute trades with DSTS during the periods
      indicated are not included in the table.

 28
<PAGE>

          As of December 31, 1998, certain Portfolios owned securities of their
          regular broker-dealers (or parents), as shown below:

<TABLE>
<CAPTION>
                                                                                             Value of
                                                                       Name of              Securities
Portfolio Name                                                      Broker-Dealer              Owned
- -------------------------------------------------------------------------------------------------------
<S>                                                           <C>                           <C>
Growth Portfolio                                              Charles Schwab Corporation    $30,555,043
Aggressive Growth Portfolio                                   Charles Schwab Corporation    $13,697,389
Balanced Portfolio                                            Charles Schwab Corporation    $24,251,649
Equity Income Portfolio                                       Charles Schwab Corporation       $379,659
Growth and Income Portfolio                                   Charles Schwab Corporation        $63,211
</TABLE>

                                                                              29
<PAGE>
Trustees and officers

          The following are the names of the Trustees and officers of the Trust,
          together with a brief description of their principal occupations
          during the last five years.


Thomas H. Bailey, Age 62 - Trustee, Chairman and President*#
100 Fillmore Street
Denver, CO 80206-4928

- --------------------------------------------------------------------------------
          Trustee, Chairman and President of Janus Investment Fund. Chairman,
          Chief Executive Officer, Director and President of Janus Capital.
          Director of Janus Distributors, Inc.


James P. Craig, III, Age 43 - Trustee and Executive Vice President*#
100 Fillmore Street

Denver, CO 80206-4928
- --------------------------------------------------------------------------------

          Trustee and Executive Vice President of Janus Investment Fund. Chief
          Investment Officer, Director of Research, Vice Chairman and Director
          of Janus Capital. Formerly Executive Vice President and Portfolio
          Manager of Growth Portfolio and Janus Fund (from inception and 1986,
          respectively, until December 1999). Formerly Executive Vice President
          and Co-Manager of Janus Venture Fund (from inception until December
          1999).



Gary O. Loo, Age 59 - Trustee#
102 N. Cascade, Suite 500

Colorado Springs, CO 80903
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund. President and Director of High
          Valley Group, Inc., Colorado Springs, CO (investments).


Dennis B. Mullen, Age 56 - Trustee

7500 E. McCormick Parkway, #24
Scottsdale, AZ 85258
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund. Private Investor. Formerly
          (1997-1998), Chief Financial Officer-Boston Market Concepts, Boston
          Chicken, Inc., Golden, CO (restaurant chain); (1993-1997), President
          and Chief Executive Officer of BC Northwest, L.P., a franchise of
          Boston Chicken, Inc., Bellevue, WA (restaurant chain).


James T. Rothe, Age 56 - Trustee

102 South Tejon Street, Suite 1100
Colorado Springs, CO 80903
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund. Professor of Business, University of
          Colorado, Colorado Springs, CO. Principal, Phillips-Smith Retail
          Group, Colorado Springs, CO (a venture capital firm). Formerly (1986-
          1994), Dean of the College of Business, University of Colorado,
          Colorado Springs, CO.

- --------------------------------------------------------------------------------
*Interested person of the Trust and of Janus Capital.
#Member of the Trust's Executive Committee.

 30
<PAGE>


William D. Stewart, Age 55 - Trustee#
5330 Sterling Drive

Boulder, CO 80302
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund. President of HPS Division of MKS
          Instruments, Boulder, CO (manufacturer of vacuum fittings and valves).


Martin H. Waldinger, Age 61 - Trustee

4940 Sandshore Court
San Diego, CA 92130
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund. Private Consultant. Formerly
          (1993-1996), Director of Run Technologies, Inc., a software
          development firm, San Carlos, CA.


Laurence J. Chang, Age 34 - Executive Vice President, Co-Manager Worldwide
Growth Portfolio and International Growth Portfolio*

100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------

          Co-Manager of Janus Investment Fund+.



David J. Corkins, Age 33 - Executive Vice President, Portfolio Manager Growth
and Income Portfolio*

100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Executive Vice President of Janus Investment Fund. Formerly,
          (1995-1997), research analyst at Janus Capital and (1993-1995), Chief
          Financial Officer of Chase U.S. Consumer Services, Inc., a Chase
          Manhattan mortgage business.

James P. Goff, Age 35 - Executive Vice President, Portfolio Manager of
Aggressive Growth Portfolio*
100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Executive Vice President and Portfolio Manager of Janus Investment
          Fund. Vice President of Janus Capital.


Helen Young Hayes, Age 37 - Executive Vice President, Co-Manager Worldwide
Growth and International Growth Portfolio*

100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------

          Executive Vice President, Co-Manager of Janus Investment Fund. Vice
          President of Janus Capital.


- --------------------------------------------------------------------------------
*Interested person of the Trust and of Janus Capital.
+Includes comparable office with various Janus funds that were reorganized into
 Janus Investment Fund on August 7, 1992.

                                                                              31
<PAGE>


Karen L. Reidy, Age 32 - Executive Vice President and Portfolio Manager of
Balanced Portfolio and Equity Income Portfolio*


100 Fillmore Street


Denver, CO 80206-4648


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


          Executive Vice President and Portfolio Manager and Assistant Manager
          of Janus Investment Fund.



Blaine P. Rollins, Age 32 - Executive Vice President, Portfolio Manager of
Growth Portfolio*

100 Fillmore Street

Denver, CO 80206-4648

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

          Executive Vice President and Portfolio Manager of Janus Investment
          Fund. Vice President of Janus Capital.


Sandy R. Rufenacht, Age 34 - Executive Vice President, Portfolio Manager of
High-Yield Portfolio*
100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Executive Vice President and Portfolio Manager of Janus Investment
          Fund. Vice President of Janus Capital. Formerly, senior accountant,
          fixed-income trader and fixed-income research analyst at Janus Capital
          (1990-1995).


Ronald V. Speaker, age 35 - Executive Vice President, Portfolio Manager of
Flexible Income Portfolio*

100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Executive Vice President and Portfolio Manager of Janus Investment
          Fund+. Vice President of Janus Capital.


Scott W. Schoelzel, Age 41 - Executive Vice President, Portfolio Manager of
Capital Appreciation Portfolio*

100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Executive Vice President and Portfolio Manager of Janus Investment
          Fund. Vice President of Janus Capital.

- --------------------------------------------------------------------------------
+Includes comparable office with various Janus funds that were reorganized into
 Janus Investment Fund on August 7, 1992.
*Interested person of the Trust and of Janus Capital.

 32
<PAGE>


Thomas A. Early, Age 45 - Vice President and General Counsel*
100 Fillmore Street
Denver, CO 80206-4928

- --------------------------------------------------------------------------------
          Vice President and General Counsel of Janus Investment Fund. Vice
          President, General Counsel and Secretary of Janus Capital. Vice
          President and General Counsel of Janus Service Corporation, Janus
          Distributors, Inc. and Janus Capital International, Ltd. Director of
          Janus World Funds Plc. Formerly (1997 to 1998), Executive Vice
          President and General Counsel of Prudential Investments Fund
          Management LLC, Newark, New Jersey. Formerly (1994 to 1997), Vice
          President and General Counsel of Prudential Retirement Services,
          Newark, New Jersey. Formerly (1988 to 1994), Associate General Counsel
          and Chief Financial Services Counsel, Frank Russell Company, Tacoma,
          Washington.


Steven R. Goodbarn, Age 42 - Vice President and Chief Financial Officer*
100 Fillmore Street
Denver, CO 80206-4928

- --------------------------------------------------------------------------------
          Vice President and Chief Financial Officer of Janus Investment Fund+.
          Vice President of Finance, Treasurer and Chief Financial Officer of
          Janus Capital, Janus Service Corporation, and Janus Distributors, Inc.
          Director of Janus Service Corporation, Janus Distributors, Inc. and
          Janus World Funds Plc. Director, Treasurer and Vice President of
          Finance of Janus Capital International Ltd. Formerly (1992-1996),
          Treasurer of Janus Investment Fund and Janus Aspen Series.


Glenn P. O'Flaherty, Age 41 - Treasurer and Chief Accounting Officer*
100 Fillmore Street, Suite 300
Denver, CO 80206-4928

- --------------------------------------------------------------------------------
          Treasurer and Chief Accounting Officer of Janus Investment Fund. Vice
          President of Janus Capital. Formerly (1991-1997), Director of Fund
          Accounting, Janus Capital.


Kelley Abbott Howes, Age 34 - Assistant Vice President and Secretary*
100 Fillmore Street
Denver, CO 80206-4928


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


          Assistant Vice President and Secretary of Janus Investment Fund.
          Director and Vice President of Janus Distributors, Inc. Vice President
          and Associate Counsel of Janus Capital.

- --------------------------------------------------------------------------------
*Interested person of the Trust and of Janus Capital.

          The Trustees are responsible for major decisions relating to each
          Portfolio's objective, policies and techniques. The Trustees also
          supervise the operation of the Portfolios by their officers and review
          the investment decisions of the officers although they do not actively
          participate on a regular basis in making such decisions.

          The Trust's Executive Committee shall have and may exercise all the
          powers and authority of the Trustees except for matters requiring
          action by all Trustees pursuant to the Trust's Bylaws or Trust
          Instrument, Delaware law or the 1940 Act.

                                                                              33
<PAGE>

          The following table shows the aggregate compensation paid to each
          Trustee by the Portfolios and all funds advised and sponsored by Janus
          Capital (collectively, the "Janus Funds") for the periods indicated.
          None of the Trustees receive pension or retirement benefits from the
          Portfolios or the Janus Funds.

<TABLE>
<CAPTION>
                                                              Aggregate Compensation       Total Compensation
                                                              from the Portfolios for   from the Janus Funds for
                                                                 fiscal year ended         calendar year ended
Name of Person, Position                                         December 31, 1998         December 31, 1998**
- -----------------------------------------------------------------------------------------------------------------
<S>                                                           <C>                       <C>
Thomas H. Bailey, Chairman and Trustee*                               $    0                     $     0
James P. Craig, III, Trustee*                                         $    0                     $     0
William D. Stewart, Trustee                                           $5,426                     $82,000
Gary O. Loo, Trustee                                                  $4,432                     $74,000
Dennis B. Mullen, Trustee                                             $4,801                     $82,000
Martin H. Waldinger, Trustee                                          $4,883                     $74,000
James T. Rothe, Trustee                                               $4,941                     $82,000
</TABLE>

 * An interested person of the Portfolios and of Janus Capital. Compensated by
   Janus Capital and not the Portfolios.
** As of December 31, 1998, Janus Funds consisted of two registered investment
   companies comprised of a total of 32 funds.

 34
<PAGE>
Shares of the trust

NET ASSET VALUE DETERMINATION

          As stated in the Prospectus, the net asset value ("NAV") of the Shares
          of each Portfolio is determined once each day on which the NYSE is
          open, at the close of its regular trading session (normally 4:00 p.m.,
          New York time, Monday through Friday). The NAV of the Shares of each
          Portfolio is not determined on days the NYSE is closed (generally, New
          Year's Day, Martin Luther King Day, Presidents' Day, Good Friday,
          Memorial Day, Independence Day, Labor Day, Thanksgiving and
          Christmas). The per Share NAV of the Shares of each Portfolio is
          determined by dividing the total value of a Portfolio's securities and
          other assets, less liabilities, attributable to the Shares of a
          Portfolio, by the total number of Shares outstanding. In determining
          NAV, securities listed on an Exchange, the NASDAQ National Market and
          foreign markets are valued at the closing prices on such markets, or
          if such price is lacking for the trading period immediately preceding
          the time of determination, such securities are valued at their current
          bid price. Municipal securities held by the Portfolios are traded
          primarily in the over-the-counter market. Valuations of such
          securities are furnished by one or more pricing services employed by
          the Portfolios and are based upon last trade or closing sales prices
          or a computerized matrix system or appraisals obtained by a pricing
          service, in each case in reliance upon information concerning market
          transactions and quotations from recognized municipal securities
          dealers. Other securities that are traded on the over-the-counter
          market are valued at their closing bid prices. Foreign securities and
          currencies are converted to U.S. dollars using the exchange rate in
          effect at the close of the NYSE. Each Portfolio will determine the
          market value of individual securities held by it, by using prices
          provided by one or more professional pricing services which may
          provide market prices to other funds, or, as needed, by obtaining
          market quotations from independent broker-dealers. Short-term
          securities maturing within 60 days are valued on an amortized cost
          basis. Securities for which quotations are not readily available, and
          other assets, are valued at fair values determined in good faith under
          procedures established by and under the supervision of the Trustees.

          Trading in securities on European and Far Eastern securities exchanges
          and over-the-counter markets is normally completed well before the
          close of business on each business day in New York (i.e., a day on
          which the NYSE is open). In addition, European or Far Eastern
          securities trading generally or in a particular country or countries
          may not take place on all business days in New York. Furthermore,
          trading takes place in Japanese markets on certain Saturdays and in
          various foreign markets on days which are not business days in New
          York and on which a Portfolio's NAV is not calculated. A Portfolio
          calculates its NAV per Share, and therefore effects sales, redemptions
          and repurchases of its Shares, as of the close of the NYSE once on
          each day on which the NYSE is open. Such calculation may not take
          place contemporaneously with the determination of the prices of the
          foreign portfolio securities used in such calculation.

PURCHASES


          Shares of the Portfolios can be purchased only by (i) the separate
          accounts of participating insurance companies for the purpose of
          funding variable insurance contracts and (ii) qualified retirement
          plans. Participating insurance companies and certain designated
          organizations are authorized to receive purchase orders on the
          Portfolios' behalf and those organizations are authorized to designate
          their agents and affiliates as intermediaries to receive purchase
          orders. Purchase orders are deemed received by a Portfolio when
          authorized organizations, their agents or affiliates receive the
          order. The Portfolios are not responsible for the failure of any
          designated organization or its agents or affiliates to carry out its
          obligations to its customers. Shares of the Portfolios are purchased
          at the NAV per Share as determined at the close of the regular trading
          session of the NYSE next occurring after a purchase order is received
          and accepted by a Portfolio or its authorized agent. In order to
          receive a day's price, your order must be received by the close of the
          regular trading session of the NYSE as described above in "Net Asset
          Value Determination." The


                                                                              35
<PAGE>


          prospectus for your insurance company's separate account or your plan
          documents contain detailed information about investing in the
          different Portfolios.



DISTRIBUTION AND SHAREHOLDER SERVICING PLAN



          Under a distribution and shareholder servicing plan ("Plan") adopted
          in accordance with Rule 12b-1 under the 1940 Act, the Shares may pay
          Janus Distributors, the Trust's distributor, a fee at an annual rate
          of up to 0.25% of the average daily net assets of the Shares of a
          Portfolio. Under the terms of the Plan, the Trust is authorized to
          make payments to Janus Distributors for remittance to insurance
          companies and qualified plan service providers as compensation for
          distribution and shareholder servicing performed by such service
          providers. The Plan is a compensation type plan and permits the
          payment at an annual rate of up to 0.25% of the average daily net
          assets of the Shares of a Portfolio for recordkeeping and
          administrative services as well as activities which are primarily
          intended to result in sales of the Shares, including but not limited
          to preparing, printing and distributing prospectuses, Statements of
          Additional Information, shareholder reports, and educational materials
          to prospective and existing contract owners and plan participants;
          responding to inquiries by contract owners and plan participants;
          receiving and answering correspondence; contract owner and participant
          level recordkeeping and administrative services; and similar
          activities. On September 14, 1999, Trustees unanimously approved the
          Plan which became effective on that date. The Plan and any Rule 12b-1
          related agreement that is entered into by the Portfolios or Janus
          Distributors in connection with the Plan will continue in effect for a
          period of more than one year only so long as continuance is
          specifically approved at least annually by a vote of a majority of the
          Trustees, and of a majority of the Trustees who are not interested
          persons (as defined in the 1940 Act) of the Trust and who have no
          direct or indirect financial interest in the operation of the Plan or
          any related agreements ("12b-1 Trustees"). All material amendments to
          the Plan must be approved by a majority vote of the Trustees,
          including a majority of the 12b-1 Trustees, at a meeting called for
          that purpose. In addition, the Plan may be terminated at any time,
          without penalty, by vote of a majority of the outstanding Shares of a
          Portfolio or by vote of a majority of 12b-1 Trustees.


REDEMPTIONS


          Redemptions, like purchases, may only be effected through the separate
          accounts of participating insurance companies or qualified retirement
          plans. Certain designated organizations are authorized to receive
          redemption orders on the Portfolios' behalf and those organizations
          are authorized to designate their agents and affiliates as
          intermediaries to receive redemption orders. Redemption orders are
          deemed received by a Portfolio when authorized organizations, their
          agents or affiliates receive the order. The Portfolios are not
          responsible for the failure of any designated organization or its
          agents or affiliates to carry out its obligations to its customers.
          Shares normally will be redeemed for cash, although each Portfolio
          retains the right to redeem its shares in kind under unusual
          circumstances, in order to protect the interests of remaining
          shareholders, by delivery of securities selected from its assets at
          its discretion. However, the Portfolios are governed by Rule 18f-1
          under the 1940 Act, which requires each Portfolio to redeem shares
          solely in cash up to the lesser of $250,000 or 1% of the NAV of that
          Portfolio during any 90-day period for any one shareholder. Should
          redemptions by any shareholder exceed such limitation, a Portfolio
          will have the option of redeeming the excess in cash or in kind. If
          shares are redeemed in kind, the redeeming shareholder might incur
          brokerage costs in converting the assets to cash. The method of
          valuing securities used to make redemptions in kind will be the same
          as the method of valuing portfolio securities described under "Shares
          of the Trust - Net Asset Value Determination" and such valuation will
          be made as of the same time the redemption price is determined.


 36
<PAGE>

          The right to require the Portfolios to redeem their shares may be
          suspended, or the date of payment may be postponed, whenever (1)
          trading on the NYSE is restricted, as determined by the SEC, or the
          NYSE is closed except for holidays and weekends, (2) the SEC permits
          such suspension and so orders, or (3) an emergency exists as
          determined by the SEC so that disposal of securities or determination
          of NAV is not reasonably practicable.

                                                                              37
<PAGE>
Income dividends, capital gains distributions and tax status


          It is a policy of the Shares of the Portfolios to distribute
          substantially all of their respective investment income at least
          semi-annually and their respective net realized gains, if any, at
          least annually. The Portfolios intend to qualify as regulated
          investment companies by satisfying certain requirements prescribed by
          Subchapter M of the Internal Revenue Code ("Code"). In addition, each
          Portfolio intends to comply with the diversification requirements of
          Code Section 817(h) related to the tax-deferred status of insurance
          company separate accounts.


          All income dividends and capital gains distributions, if any, on a
          Portfolio's Shares are reinvested automatically in additional Shares
          of that Portfolio at the NAV determined on the first business day
          following the record date.

          The Portfolios may purchase securities of certain foreign corporations
          considered to be passive foreign investment companies by the IRS. In
          order to avoid taxes and interest that must be paid by the Portfolios
          if these instruments appreciate in value, the Portfolios may make
          various elections permitted by the tax laws. However, these elections
          could require that the Portfolios recognize taxable income, which in
          turn must be distributed, before the securities are sold and before
          cash is received to pay the distributions.

          Some foreign securities purchased by the Portfolios may be subject to
          foreign taxes which could reduce the yield on such securities. The
          amount of such foreign taxes is expected to be insignificant. The
          Portfolios may from year to year make the election permitted under
          Section 853 of the Code to pass through such taxes to shareholders. If
          such election is not made, any foreign taxes paid or accrued will
          represent an expense to each Portfolio which will reduce its
          investment company taxable income.


          Because Shares of the Portfolios can only be purchased through
          variable insurance contracts or qualified plans, it is anticipated
          that any income dividends or capital gains distributions will be
          exempt from current taxation if left to accumulate within such plans.
          See the prospectus for the separate account of the related insurance
          company or the plan documents for additional information.


 38
<PAGE>
Miscellaneous information


          Each Portfolio is a series of the Trust, an open-end management
          investment company registered under the 1940 Act and organized as a
          Delaware business trust on May 20, 1993. As of the date of this SAI,
          the Trust is offering eleven series of shares, known as "Portfolios,"
          each of which consists of three classes of shares. Additional series
          and/or classes may be created from time to time.


SHARES OF THE TRUST

          The Trust is authorized to issue an unlimited number of shares of
          beneficial interest with a par value of $.001 per share for each
          series of the Trust. Shares of each Portfolio are fully paid and
          nonassessable when issued. Shares of a Portfolio participate equally
          in dividends and other distributions by the shares of such Portfolio,
          and in residual assets of that Portfolio in the event of liquidation.
          Shares of each Portfolio have no preemptive, conversion or
          subscription rights.


          The Portfolios each offer three classes of shares. The Shares
          discussed in this SAI are offered only in connection with investment
          in and payments under variable insurance contracts and to qualified
          retirement plans that require a fee from Portfolio assets to procure
          distribution and administrative services to contract owners and plan
          participants. A second class of shares, Retirement Shares, is offered
          only to qualified plans whose service providers require a fee from the
          Trust assets for providing certain services to plan participants. The
          third class of shares, Institutional Shares, is offered only in
          connection with investments in and payments under variable insurance
          contracts as well as other qualified retirement plans.


SHAREHOLDER MEETINGS

          The Trust does not intend to hold annual shareholder meetings.
          However, special meetings may be called for a specific Portfolio or
          for the Trust as a whole for purposes such as electing or removing
          Trustees, terminating or reorganizing the Trust, changing fundamental
          policies, or for any other purpose requiring a shareholder vote under
          the 1940 Act. Separate votes are taken by each Portfolio or class only
          if a matter affects or requires the vote of only that Portfolio or
          class or that Portfolio's or class' interest in the matter differs
          from the interest of other Portfolios of the Trust. A shareholder is
          entitled to one vote for each Share owned.

VOTING RIGHTS


          A participating insurance company issuing a variable insurance
          contract will vote shares in the separate account as required by law
          and interpretations thereof, as may be amended or changed from time to
          time. In accordance with current law and interpretations, a
          participating insurance company is required to request voting
          instructions from policy owners and must vote shares in the separate
          account, including shares for which no instructions have been
          received, in proportion to the voting instructions received.
          Additional information may be found in the participating insurance
          company's separate account prospectus.


          The Trustees are responsible for major decisions relating to each
          Portfolio's policies and objectives; the Trustees oversee the
          operation of each Portfolio by its officers and review the investment
          decisions of the officers.

          The present Trustees were elected by the initial trustee of the Trust
          on May 25, 1993, and were approved by the initial shareholder on May
          25, 1993, with the exception of Mr. Craig and Mr. Rothe who were
          appointed by the Trustees as of June 30, 1995 and as of January 1,
          1997, respectively. Under the Trust Instrument, each Trustee will
          continue in office until the termination of the Trust or his earlier
          death, retirement, resignation, bankruptcy, incapacity or removal.
          Vacancies will be filled by a majority of the remaining Trustees,
          subject to the 1940 Act. Therefore, no annual or regular meetings of
          shareholders

                                                                              39
<PAGE>

          normally will be held, unless otherwise required by the Trust
          Instrument or the 1940 Act. Subject to the foregoing, shareholders
          have the power to vote to elect or remove Trustees, to terminate or
          reorganize their Portfolio, to amend the Trust Instrument, to bring
          certain derivative actions and on any other matters on which a
          shareholder vote is required by the 1940 Act, the Trust Instrument,
          the Trust's Bylaws or the Trustees.

          As mentioned above in "Shareholder Meetings," each share of each
          portfolio of the Trust has one vote (and fractional votes for
          fractional shares). Shares of all portfolios of the Trust have
          noncumulative voting rights, which means that the holders of more than
          50% of the shares of all series of the Trust voting for the election
          of Trustees can elect 100% of the Trustees if they choose to do so
          and, in such event, the holders of the remaining shares will not be
          able to elect any Trustees.

INDEPENDENT ACCOUNTANTS

          PricewaterhouseCoopers LLP, 950 Seventeenth Street, Suite 2500,
          Denver, Colorado 80202, independent accountants for the Portfolios,
          audit the Portfolios' annual financial statements and prepare their
          tax returns.

REGISTRATION STATEMENT

          The Trust has filed with the SEC, Washington, D.C., a Registration
          Statement under the Securities Act of 1933, as amended, with respect
          to the securities to which this SAI relates. If further information is
          desired with respect to the Portfolios or such securities, reference
          is made to the Registration Statement and the exhibits filed as a part
          thereof.

 40
<PAGE>
Performance information


          Quotations of average annual total return for the Shares of a
          Portfolio will be expressed in terms of the average annual compounded
          rate of return of a hypothetical investment in the Shares of such
          Portfolio over periods of 1, 5, and 10 years (up to the life of the
          Portfolio). These are the annual total rates of return that would
          equate the initial amount invested to the ending redeemable value.
          These rates of return are calculated pursuant to the following
          formula: P(1 + T)(n) = ERV (where P = a hypothetical initial payment
          of $1,000, T = the average annual total return, n = the number of
          years and ERV = the ending redeemable value of a hypothetical $1,000
          payment made at the beginning of the period). All total return figures
          reflect the deduction of a proportional share of expenses of the
          Shares of a Portfolio on an annual basis, and assume that all
          dividends and distributions are reinvested when paid. The average
          annual total return of the Shares of each Portfolio, computed as of
          June 30, 1999, is shown in the table below.



          The Service Shares commenced operations on January 1, 2000. The
          returns shown for the Service Shares of these Portfolios reflect the
          historical performance of a different class of shares (the
          Institutional Shares) prior to January 1, 2000. That historical
          performance of the Institutional Shares has been restated for purposes
          of the Service Shares performance based on the Service Shares
          estimated fees and expenses (ignoring any fee and expense limitations)
          except where that restatement results in higher performance than the
          actual historical performance of the Institutional Shares.



<TABLE>
<CAPTION>
                                                                                            Average Annual Total Return
                                                              Portfolio     Number      -----------------------------------
                                                              Inception    of Months     One      Five     Ten     Life of
Portfolio Name                                                  Date      in Lifetime    Year    Years    Years   Portfolio
- ---------------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>         <C>           <C>      <C>      <C>     <C>
Growth Portfolio - Service Shares                              9/13/93       69.5       32.43%   25.04%    N/A      21.78%
Aggressive Growth Portfolio - Service Shares                   9/13/93       69.5       49.36%   27.24%    N/A      25.28%
Capital Appreciation Portfolio - Service Shares                 5/1/97         26       51.36%      N/A    N/A      53.15%
International Growth Portfolio - Service Shares                 5/2/94         62        5.25%   21.19%    N/A      19.11%
Worldwide Growth Portfolio - Service Shares                    9/13/93       69.5       13.11%   24.61%    N/A      24.05%
Balanced Portfolio - Service Shares                            9/13/93       69.5       27.84%   21.58%    N/A      20.00%
Equity Income Portfolio - Service Shares                        5/1/97         26       43.07%      N/A    N/A      48.55%
Growth and Income Portfolio - Service Shares                    5/1/98         14       36.78%      N/A    N/A      37.14%
Flexible Income Portfolio - Service Shares                     9/13/93       69.5        2.45%   10.01%    N/A       8.74%
High-Yield Portfolio - Service Shares                           5/1/96         38       (.68)%   10.21%    N/A      10.77%
</TABLE>


          Yield quotations for a Portfolio's Shares are based on the investment
          income per Share earned during a particular 30-day period (including
          dividends, if any, and interest), less expenses accrued during the
          period ("net investment income"), and are computed by dividing net
          investment income by the net asset value per share on the last day of
          the period, according to the following formula:

                              YIELD = 2[(a - b + 1)(6) - 1]
                                      ---------------------
                                               cd

          where a = dividend and interest income
                b = expenses accrued for the period (net of reimbursements)
                c = average daily number of shares outstanding during the period
                    that were entitled to receive dividends
                d = maximum net asset value per share on the last day of the
                    period

                                                                              41
<PAGE>


          From time to time in advertisements or sales material, the Portfolios
          may discuss their performance ratings or other information as
          published by recognized mutual fund statistical rating services,
          including, but not limited to, Lipper Analytical Services, Inc.,
          Ibbotson Associates, Micropal or Morningstar, Inc. or by publications
          of general interest such as Forbes, Money, The Wall Street Journal,
          Mutual Funds Magazine, Kiplinger's or Smart Money. The Portfolios may
          also compare their performance to that of other selected mutual funds
          (for example, peer groups created by Lipper or Morningstar), mutual
          fund averages or recognized stock market indicators, including, but
          not limited to, the Standard & Poor's 500 Composite Stock Price Index,
          the Standard & Poor's 400 Midcap Index, the Dow Jones Industrial
          Average, the Lehman Brothers Government/Corporate Bond Index, the
          Lehman Brothers Government/Corporate 1-3 Year Bond Index, the Lehman
          Brothers Long Government/Corporate Bond Index, the Lehman Brothers
          Intermediate Government Bond Index, the Lehman Brothers Municipal Bond
          Index, the Russell 2000 Index and the NASDAQ composite. In addition,
          the Portfolios may compare their total return or yield to the yield on
          U.S. Treasury obligations and to the percentage change in the Consumer
          Price Index. Worldwide Growth Portfolio and International Growth
          Portfolio may also compare their performance to the record of global
          market indicators, such as the Morgan Stanley International World
          Index or Morgan Stanley Capital International Europe, Australasia, Far
          East Index (EAFE Index). Such performance ratings or comparisons may
          be made with funds that may have different investment restrictions,
          objectives, policies or techniques than the Portfolios and such other
          funds or market indicators may be comprised of securities that differ
          significantly from the Portfolios' investments.


 42
<PAGE>
Financial statements


          The following audited financial statements for Institutional Shares
          and Retirement Shares for the period ended December 31, 1998 and the
          unaudited Semiannual Report for Institutional Shares and Retirement
          Shares for the period ended June 30, 1999 are hereby incorporated into
          this Statement of Additional Information by reference to the
          Portfolios' Annual Report dated December 31, 1998 and the Portfolios'
          Semiannual Report dated June 30, 1999. A copy of each report
          accompanies this SAI. The Service Shares had not yet commenced
          operations as of June 30, 1999.



DOCUMENTS INCORPORATED BY REFERENCE TO THE ANNUAL REPORT AND SEMIANNUAL REPORT



          Schedules of Investments as of December 31, 1998 and June 30, 1999



          Statements of Operations for the period ended December 31, 1998 and
          June 30, 1999



          Statements of Assets and Liabilities as of December 31, 1998 and June
          30, 1999



          Statements of Changes in Net Assets for the periods ended December 31,
          1998 and 1997 and for the six months ended June 30, 1999


          Financial Highlights for each of the periods indicated

          Notes to Financial Statements


          Report of Independent Accountants dated December 31, 1998



          The portions of the Annual Report and Semiannual Report that are not
          specifically listed above are not incorporated by reference into this
          Statement of Additional Information and are not part of the
          Registration Statement.


                                                                              43
<PAGE>
Appendix A

EXPLANATION OF RATING CATEGORIES

          The following is a description of credit ratings issued by two of the
          major credit ratings agencies. Credit ratings evaluate only the safety
          of principal and interest payments, not the market value risk of lower
          quality securities. Credit rating agencies may fail to change credit
          ratings to reflect subsequent events on a timely basis. Although Janus
          Capital considers security ratings when making investment decisions,
          it also performs its own investment analysis and does not rely solely
          on the ratings assigned by credit agencies.

STANDARD & POOR'S
RATINGS SERVICES

<TABLE>
                <S>                          <C>
                BOND RATING                  EXPLANATION
                -----------------------------------------------------------------------------------------
                Investment Grade
                AAA......................... Highest rating; extremely strong capacity to pay principal
                                             and interest.
                AA.......................... High quality; very strong capacity to pay principal and
                                             interest.
                A........................... Strong capacity to pay principal and interest; somewhat more
                                             susceptible to the adverse effects of changing circumstances
                                             and economic conditions.
                BBB......................... Adequate capacity to pay principal and interest; normally
                                             exhibit adequate protection parameters, but adverse economic
                                             conditions or changing circumstances more likely to lead to
                                             a weakened capacity to pay principal and interest than for
                                             higher rated bonds.
                Non-Investment Grade
                BB, B, CCC, CC, C........... Predominantly speculative with respect to the issuer's
                                             capacity to meet required interest and principal payments.
                                             BB -- lowest degree of speculation; C -- the highest degree
                                             of speculation. Quality and protective characteristics
                                             outweighed by large uncertainties or major risk exposure to
                                             adverse conditions.
                D........................... In default.
</TABLE>

MOODY'S INVESTORS SERVICE, INC.

<TABLE>
                <S>                          <C>
                BOND RATING                  EXPLANATION
                -----------------------------------------------------------------------------------------
                Investment Grade
                Aaa......................... Highest quality, smallest degree of investment risk.
                Aa.......................... High quality; together with Aaa bonds, they compose the
                                             high-grade bond group.
                A........................... Upper-medium grade obligations; many favorable investment
                                             attributes.
                Baa......................... Medium-grade obligations; neither highly protected nor
                                             poorly secured. Interest and principal appear adequate for
                                             the present but certain protective elements may be lacking
                                             or may be unreliable over any great length of time.
                Non-Investment Grade
                Ba.......................... More uncertain, with speculative elements. Protection of
                                             interest and principal payments not well safeguarded during
                                             good and bad times.
                B........................... Lack characteristics of desirable investment; potentially
                                             low assurance of timely interest and principal payments or
                                             maintenance of other contract terms over time.
                Caa......................... Poor standing, may be in default; elements of danger with
                                             respect to principal or interest payments.
                Ca.......................... Speculative in a high degree; could be in default or have
                                             other marked shortcomings.
                C........................... Lowest-rated; extremely poor prospects of ever attaining
                                             investment standing.
</TABLE>

 44
<PAGE>

          Unrated securities will be treated as noninvestment grade securities
          unless the portfolio manager determines that such securities are the
          equivalent of investment grade securities. Securities that have
          received ratings from more than one agency are considered investment
          grade if at least one agency has rated the security investment grade.

                                                                              45
<PAGE>

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<PAGE>

        LOGO

            1-800-29JANUS
            100 Fillmore Street
            Denver, Colorado 80206-4928
            janus.com




<PAGE>

The information in this Statement of Additional Information is not complete and
may be changed. We may not sell these securities until the registration
statement filed with the Securities and Exchange Commission is effective. This
Statement of Additional Information is not an offer to sell these securities and
is not soliciting an offer to buy these securities in any state where the offer
is not permitted.


                                         LOGO


                                Subject to Completion
       Preliminary Statement of Additional Information Dated October 26, 1999


                 Janus Aspen Series

                 Service Shares


                     Money Market Portfolio

                              100 Fillmore Street
                              Denver, CO 80206-4928
                              (800) 29JANUS

                              Statement of Additional Information


                              December 31, 1999


                 This Statement of Additional Information expands upon and
                 supplements the information contained in the current Prospectus
                 for the Retirement Shares (the "Shares") of Money Market
                 Portfolio. The Portfolio is each a separate series of Janus
                 Aspen Series, a Delaware trust.


                 The Service Shares of the Portfolio may be purchased only by
                 the separate accounts of insurance companies for the purpose of
                 funding variable life insurance policies and variable annuity
                 contracts (collectively, "variable insurance contracts") and by
                 certain qualified retirement plans.



                 This SAI is not a Prospectus and should be read in conjunction
                 with the Prospectus dated December 31, 1999, which is
                 incorporated by reference into this SAI and may be obtained
                 from your insurance company or plan sponsor. This SAI contains
                 additional and more detailed information about the Portfolio's
                 operations and activities than the Prospectus. The Annual
                 Report, which contains important financial information about
                 the Portfolio, is incorporated by reference into this SAI and
                 is also available, without charge, from your insurance company
                 or plan sponsor.

<PAGE>

    LOGO
<PAGE>

                                                               Table of contents


<TABLE>
                <S>                                                           <C>
                Investment Restrictions and
                Investment Strategies.......................................    2
                Performance Data............................................   10
                Determination of Net Asset Value............................   11
                Investment Adviser..........................................   12
                Custodian, Transfer Agent
                and Certain Affiliations....................................   14
                Portfolio Transactions and Brokerage........................   15
                Trustees and Officers.......................................   17
                Purchase of Shares..........................................   21
                Distribution and Shareholder Servicing Plan.................   22
                Redemption of Shares........................................   23
                Dividends and Tax Status....................................   24
                Miscellaneous Information...................................   25
                   Shares of the Trust......................................   25
                   Shareholder Meetings.....................................   25
                   Voting Rights............................................   25
                   Independent Accountants..................................   26
                   Registration Statement...................................   26
                Financial Statements........................................   27
                Appendix A..................................................   28
                   Description of Securities Ratings........................   28
                Appendix B..................................................   31
                   Description of Municipal Securities......................   31
</TABLE>


                                                                               1
<PAGE>
Investment restrictions and investment strategies

INVESTMENT RESTRICTIONS

          The Portfolio has adopted certain fundamental investment restrictions
          that cannot be changed without shareholder approval. Shareholder
          approval means approval by the lesser of (i) more than 50% of the
          outstanding voting securities of the Trust (or the Portfolio or class
          of shares if a matter affects just the Portfolio or class of shares),
          or (ii) 67% or more of the voting securities present at a meeting if
          the holders of more than 50% of the outstanding voting securities of
          the Trust (or the Portfolio or class of shares) are present or
          represented by proxy.

          As used in the restrictions set forth below and as used elsewhere in
          this SAI, the term "U.S. Government Securities" shall have the meaning
          set forth in the Investment Company Act of 1940, as amended (the "1940
          Act"). The 1940 Act defines U.S. Government Securities as securities
          issued or guaranteed by the United States government, its agencies or
          instrumentalities. U.S. Government Securities may also include
          repurchase agreements collateralized and municipal securities escrowed
          with or refunded with escrowed U.S. government securities.

          The Portfolio has adopted the following fundamental policies:

          (1) With respect to 75% of its assets, the Portfolio may not purchase
          a security other than a U.S. Government Security, if, as a result,
          more than 5% of its total assets would be invested in the securities
          of a single issuer or the Portfolio would own more than 10% of the
          outstanding voting securities of any single issuer. (As noted in the
          Prospectus, the Portfolio is currently subject to the greater
          diversification standards of Rule 2a-7, which are not fundamental.)

          (2) The Portfolio may not purchase securities if 25% or more of the
          value of its total assets would be invested in the securities of
          issuers conducting their principal business activities in the same
          industry; provided that: (i) there is no limit on investments in U.S.
          Government Securities or in obligations of domestic commercial banks
          (including U.S. branches of foreign banks subject to regulations under
          U.S. laws applicable to domestic banks and, to the extent that its
          parent is unconditionally liable for the obligation, foreign branches
          of U.S. banks); (ii) this limitation shall not apply to the
          Portfolio's investments in municipal securities; (iii) there is no
          limit on investment in issuers domiciled in a single country; (iv)
          financial service companies are classified according to the end users
          of their services (for example, automobile finance, bank finance and
          diversified finance are each considered to be a separate industry);
          and (v) utility companies are classified according to their services
          (for example, gas, gas transmission, electric, and telephone are each
          considered to be a separate industry).

          (3) The Portfolio may not act as an underwriter of securities issued
          by others, except to the extent that it may be deemed an underwriter
          in connection with the disposition of its portfolio securities.

          (4) The Portfolio may not lend any security or make any other loan if,
          as a result, more than 25% of its total assets would be lent to other
          parties (but this limitation does not apply to purchases of commercial
          paper, debt securities or repurchase agreements).

          (5) The Portfolio may not purchase or sell real estate or any interest
          therein, except that the Portfolio may invest in debt obligations
          secured by real estate or interests therein or securities issued by
          companies that invest in real estate or interests therein.

          (6) The Portfolio may borrow money for temporary or emergency purposes
          (not for leveraging) in an amount not exceeding 25% of the value of
          its total assets (including the amount borrowed) less liabilities
          (other than borrowings). If borrowings exceed 25% of the value of the
          Portfolio's total assets by reason of a decline in net assets, it will
          reduce its borrowings within three business days to the extent
          necessary to comply with the 25% limitation. Reverse repurchase
          agreements or the segregation of assets in connection with such
          agreements shall not be considered borrowing for the purposes of this
          limit.

 2
<PAGE>

          (7) The Portfolio may, notwithstanding any other investment policy or
          restriction (whether or not fundamental), invest all of its assets in
          the securities of a single open-end management investment company with
          substantially the same fundamental investment objectives, policies and
          restrictions as the Portfolio.

          Investment restriction (1) is intended to reflect the requirements
          under Section 5(b)(1) of the 1940 Act for a diversified fund. Rule
          2a-7 provides that money market funds that comply with the
          diversification limits of Rule 2a-7 are deemed to comply with the
          diversification limits of Section 5(b)(1). Thus, the Portfolio
          interprets restriction (1) in accordance with Rule 2a-7. Accordingly,
          if securities are subject to a guarantee provided by a non-controlled
          person, the Rule 2a-7 diversification tests apply to the guarantor,
          and the diversification test in restriction (1) does not apply to the
          issuer.

          The Portfolio has adopted the following nonfundamental investment
          restrictions that may be changed by the Trustees without shareholder
          approval:

          (1) The Portfolio may not invest in securities or enter into
          repurchase agreements with respect to any securities if, as a result,
          more than 10% of its net assets would be invested in repurchase
          agreements not entitling the holder to payment of principal within
          seven days and in other securities that are not readily marketable
          ("illiquid securities"). The Trustees, or the Portfolio's investment
          adviser acting pursuant to authority delegated by the Trustees, may
          determine that a readily available market exists for certain
          securities such as securities eligible for resale pursuant to Rule
          144A under the Securities Act of 1933, or any successor to such rule,
          Section 4(2) commercial paper and municipal lease obligations.
          Accordingly, such securities may not be subject to the foregoing
          limitation.

          (2) The Portfolio may not purchase securities on margin, or make short
          sales of securities, except for short sales against the box and the
          use of short-term credit necessary for the clearance of purchases and
          sales of portfolio securities.

          (3) The Portfolio may not pledge, mortgage, hypothecate or encumber
          any of its assets except to secure permitted borrowings or in
          connection with permitted short sales.

          (4) The Portfolio may not invest in companies for the purpose of
          exercising control of management.

          Under the terms of an exemptive order received from the Securities and
          Exchange Commission ("SEC"), the Portfolio may borrow money from or
          lend money to other funds that permit such transactions and for which
          Janus Capital serves as investment adviser. All such borrowing and
          lending will be subject to the above limits. The Portfolio will borrow
          money through the program only when the costs are equal to or lower
          than the cost of bank loans. Interfund loans and borrowings normally
          extend overnight, but can have a maximum duration of seven days. The
          Portfolio will lend through the program only when the returns are
          higher than those available from other short-term instruments (such as
          repurchase agreements). The Portfolio may have to borrow from a bank
          at a higher interest rate if an interfund loan is called or not
          renewed. Any delay in repayment to a lending Portfolio could result in
          a lost investment opportunity or additional borrowing costs.

          For purposes of the Portfolio's policies on investing in particular
          industries, the Portfolio will rely primarily on industry or industry
          group classifications as published by Bloomberg L.P. To the extent
          that Bloomberg L.P. industry classifications are so broad that the
          primary economic characteristics in a single industry are materially
          different, the Portfolio may further classify issuers in accordance
          with industry classifications as published by the SEC.

                                                                               3
<PAGE>

INVESTMENT STRATEGIES

          The Portfolio may invest only in "eligible securities" as defined in
          Rule 2a-7 adopted under the 1940 Act. Generally, an eligible security
          is a security that (i) is denominated in U.S. dollars and has a
          remaining maturity of 397 days or less (as calculated pursuant to Rule
          2a-7); (ii) is rated, or is issued by an issuer with short-term debt
          outstanding that is rated, in one of the two highest rating categories
          by any two nationally recognized statistical rating organizations
          ("NRSROs") or, if only one NRSRO has issued a rating, by that NRSRO
          (the "Requisite NRSROs") or is unrated and of comparable quality to a
          rated security, as determined by Janus Capital; and (iii) has been
          determined by Janus Capital to present minimal credit risks pursuant
          to procedures approved by the Trustees. In addition, the Portfolio
          will maintain a dollar-weighted average portfolio maturity of 90 days
          or less. A description of the ratings of some NRSROs appears in
          Appendix A.

          Under Rule 2a-7, the Portfolio may not invest more than five percent
          of its total assets in the securities of any one issuer other than
          U.S. Government Securities, provided that in certain cases it may
          invest more than 5% of its assets in a single issuer for a period of
          up to three business days. Investment in demand features, guarantees
          and other types of instruments or features are subject to the
          diversification limits under Rule 2a-7.

          Pursuant to Rule 2a-7, the Portfolio will invest at least 95% of its
          total assets in "first-tier" securities. First-tier securities are
          eligible securities that are rated, or are issued by an issuer with
          short-term debt outstanding that is rated, in the highest rating
          category by the Requisite NRSROs or are unrated and of comparable
          quality to a rated security. In addition, the Portfolio may invest in
          "second-tier" securities which are eligible securities that are not
          first-tier securities. However, the Portfolio may not invest in a
          second-tier security if immediately after the acquisition thereof it
          would have invested more than (i) the greater of one percent of its
          total assets or one million dollars in second-tier securities issued
          by that issuer, or (ii) five percent of its total assets in
          second-tier securities.

          The following discussion of types of securities in which the Portfolio
          may invest supplements and should be read in conjunction with the
          Prospectus.

Participation Interests

          The Portfolio may purchase participation interests in loans or
          securities in which it may invest directly. Participation interests
          are generally sponsored or issued by banks or other financial
          institutions. A participation interest gives the Portfolio an
          undivided interest in the underlying loans or securities in the
          proportion that the Portfolio's interest bears to the total principal
          amount of the underlying loans or securities. Participation interests,
          which may have fixed, floating or variable rates, may carry a demand
          feature backed by a letter of credit or guarantee of a bank or
          institution permitting the holder to tender them back to the bank or
          other institution. For certain participation interests, the Portfolio
          will have the right to demand payment, on not more than seven days'
          notice, for all or a part of the Portfolio's participation interest.
          The Portfolio intends to exercise any demand rights it may have upon
          default under the terms of the loan or security, to provide liquidity
          or to maintain or improve the quality of the Portfolio's investment
          portfolio. The Portfolio will only purchase participation interests
          that Janus Capital determines present minimal credit risks.

Variable and Floating Rate Notes

          The Portfolio also may purchase variable and floating rate demand
          notes of corporations, which are unsecured obligations redeemable upon
          not more than 30 days' notice. These obligations include master demand
          notes that permit investment of fluctuating amounts at varying rates
          of interest pursuant to direct

 4
<PAGE>

          arrangements with the issuer of the instrument. The issuer of these
          obligations often has the right, after a given period, to prepay the
          outstanding principal amount of the obligations upon a specified
          number of days' notice. These obligations generally are not traded,
          nor generally is there an established secondary market for these
          obligations. To the extent a demand note does not have a seven day or
          shorter demand feature and there is no readily available market for
          the obligation, it is treated as an illiquid investment.

          Securities with ultimate maturities of greater than 397 days may be
          purchased only pursuant to Rule 2a-7. Under that Rule, only those
          long-term instruments that have demand features which comply with
          certain requirements and certain variable rate U.S. Government
          Securities may be purchased. The rate of interest on securities
          purchased by the Portfolio may be tied to short-term Treasury or other
          government securities or indices on securities that are permissible
          investments of the Portfolio, as well as other money market rates of
          interest. The Portfolio will not purchase securities whose values are
          tied to interest rates or indices that are not appropriate for the
          duration and volatility standards of a money market fund.

Mortgage- and Asset-Backed Securities

          The Portfolio may invest in mortgage-backed securities, which
          represent an interest in a pool of mortgages made by lenders such as
          commercial banks, savings and loan institutions, mortgage bankers,
          mortgage brokers and savings banks. Mortgage-backed securities may be
          issued by governmental or government-related entities or by
          non-governmental entities such as banks, savings and loan
          institutions, private mortgage insurance companies, mortgage bankers
          and other secondary market issuers.

          Interests in pools of mortgage-backed securities differ from other
          forms of debt securities which normally provide for periodic payment
          of interest in fixed amounts with principal payments at maturity or
          specified call dates. In contrast, mortgage-backed securities provide
          periodic payments which consist of interest and, in most cases,
          principal. In effect, these payments are a "pass-through" of the
          periodic payments and optional prepayments made by the individual
          borrowers on their mortgage loans, net of any fees paid to the issuer
          or guarantor of such securities. Additional payments to holders of
          mortgage-backed securities are caused by prepayments resulting from
          the sale of the underlying residential property, refinancing or
          foreclosure, net of fees or costs which may be incurred.

          As prepayment rates of individual pools of mortgage loans vary widely,
          it is not possible to predict accurately the average life of a
          particular security. Although mortgage-backed securities are issued
          with stated maturities of up to forty years, unscheduled or early
          payments of principal and interest on the underlying mortgages may
          shorten considerably the effective maturities. Mortgage-backed
          securities may have varying assumptions for average life. The volume
          of prepayments of principal on a pool of mortgages underlying a
          particular security will influence the yield of that security, and the
          principal returned to the Portfolio may be reinvested in instruments
          whose yield may be higher or lower than that which might have been
          obtained had the prepayments not occurred. When interest rates are
          declining, prepayments usually increase, with the result that
          reinvestment of principal prepayments will be at a lower rate than the
          rate applicable to the original mortgage-backed security.

          The Portfolio may invest in mortgage-backed securities that are issued
          by agencies or instrumentalities of the U.S. government. The
          Government National Mortgage Association ("GNMA") is the principal
          federal government guarantor of mortgage-backed securities. GNMA is a
          wholly-owned U.S. government corporation within the Department of
          Housing and Urban Development. GNMA Certificates are debt securities
          which represent an interest in one mortgage or a pool of mortgages
          which are insured by the Federal Housing Administration or the Farmers
          Home Administration or are guaranteed by the Veterans Administration.
          The Portfolio may also invest in pools of conventional mortgages which
          are issued or

                                                                               5
<PAGE>

          guaranteed by agencies of the U.S. government. GNMA pass-through
          securities are considered to be riskless with respect to default in
          that (i) the underlying mortgage loan portfolio is comprised entirely
          of government-backed loans and (ii) the timely payment of both
          principal and interest on the securities is guaranteed by the full
          faith and credit of the U.S. government, regardless of whether or not
          payments have been made on the underlying mortgages. GNMA pass-through
          securities are, however, subject to the same market risk as comparable
          debt securities. Therefore, the market value of the Portfolio's GNMA
          securities can be expected to fluctuate in response to changes in
          prevailing interest rate levels.

          Residential mortgage loans are pooled also by the Federal Home Loan
          Mortgage Corporation ("FHLMC"). FHLMC is a privately managed, publicly
          chartered agency created by Congress in 1970 for the purpose of
          increasing the availability of mortgage credit for residential
          housing. FHLMC issues participation certificates ("PCs") which
          represent interests in mortgages from FHLMC's national portfolio. The
          mortgage loans in FHLMC's portfolio are not U.S. government backed;
          rather, the loans are either uninsured with loan-to-value ratios of
          80% or less, or privately insured if the loan-to-value ratio exceeds
          80%. FHLMC guarantees the timely payment of interest and ultimate
          collection of principal on FHLMC PCs; the U.S. government does not
          guarantee any aspect of FHLMC PCs.

          The Federal National Mortgage Association ("FNMA") is a
          government-sponsored corporation owned entirely by private
          shareholders. It is subject to general regulation by the Secretary of
          Housing and Urban Development. FNMA purchases residential mortgages
          from a list of approved seller/servicers which include savings and
          loan associations, savings banks, commercial banks, credit unions and
          mortgage bankers. FNMA guarantees the timely payment of principal and
          interest on the pass-through securities issued by FNMA; the U.S.
          government does not guarantee any aspect of the FNMA pass-through
          securities.

          The Portfolio may also invest in privately-issued mortgage-backed
          securities to the extent permitted by their investment restrictions.
          Mortgage-backed securities offered by private issuers include
          pass-through securities comprised of pools of conventional residential
          mortgage loans; mortgage-backed bonds which are considered to be debt
          obligations of the institution issuing the bonds and which are
          collateralized by mortgage loans; and collateralized mortgage
          obligations ("CMOs") which are collateralized by mortgage-backed
          securities issued by GNMA, FHLMC or FNMA or by pools of conventional
          mortgages.

          Asset-backed securities represent direct or indirect participation in,
          or are secured by and payable from, assets other than mortgage-backed
          assets such as motor vehicle installment sales contracts, installment
          loan contracts, leases of various types of real and personal property
          and receivables from revolving credit agreements (credit cards).
          Asset-backed securities have yield characteristics similar to those of
          mortgage-backed securities and, accordingly, are subject to many of
          the same risks.


Securities Lending



          The Portfolio may lend securities to qualified parties (typically
          brokers or other financial institutions) who need to borrow securities
          in order to complete certain transactions such as covering short
          sales, avoiding failures to deliver securities or completing arbitrage
          activities. The Portfolio may seek to earn additional income through
          securities lending. Since there is the risk of delay in recovering a
          loaned security or the risk of loss in collateral rights if the
          borrower fails financially, securities lending will only be made to
          parties that Janus Capital deems creditworthy and in good standing. In
          addition, such loans will only be made if Janus Capital believes the
          benefit from granting such loans justifies the risk. The Portfolio
          will not have the right to vote on securities while they are being
          lent, but it will call a loan in anticipation of any important vote.
          All loans will be continuously secured by collateral which consists of
          cash, U.S. government securities, letters of credit and such other
          collateral permitted by the Securities and Exchange Commission and
          policies approved by the Trustees. Cash collateral may be invested in
          money


 6
<PAGE>


          market funds advised by Janus Capital to the extent consistent with
          exemptive relief obtained from the SEC.


Reverse Repurchase Agreements

          Reverse repurchase agreements are transactions in which the Portfolio
          sells a security and simultaneously commits to repurchase that
          security from the buyer at an agreed upon price on an agreed upon
          future date. The resale price in a reverse repurchase agreement
          reflects a market rate of interest that is not related to the coupon
          rate or maturity of the sold security. For certain demand agreements,
          there is no agreed upon repurchase date and interest payments are
          calculated daily, often based upon the prevailing overnight repurchase
          rate. The Portfolio will use the proceeds of reverse repurchase
          agreements only to satisfy unusually heavy redemption requests or for
          other temporary or emergency purposes without the necessity of selling
          portfolio securities.

          Generally, a reverse repurchase agreement enables the Portfolio to
          recover for the term of the reverse repurchase agreement all or most
          of the cash invested in the portfolio securities sold and to keep the
          interest income associated with those portfolio securities. Such
          transactions are only advantageous if the interest cost to the
          Portfolio of the reverse repurchase transaction is less than the cost
          of obtaining the cash otherwise. In addition, interest costs on the
          money received in a reverse repurchase agreement may exceed the return
          received on the investments made by the Portfolio with those monies.

When Issued and Delayed Delivery Securities

          The Portfolio may purchase securities on a when-issued or delayed
          delivery basis. The Portfolio will enter into such transactions only
          when it has the intention of actually acquiring the securities. To
          facilitate such acquisitions, the Portfolio's custodian will segregate
          cash or high quality liquid assets in an amount at least equal to such
          commitments. On delivery dates for such transactions, the Portfolio
          will meet its obligations from maturities, sales of the segregated
          securities or from other available sources of cash. If it chooses to
          dispose of the right to acquire a when-issued security prior to its
          acquisition, the Portfolio could, as with the disposition of any other
          portfolio obligation, incur a gain or loss due to market fluctuation.
          At the time it makes the commitment to purchase securities on a
          when-issued or delayed delivery basis, the Portfolio will record the
          transaction as a purchase and thereafter reflect the value of such
          securities in determining its net asset value.

Investment Company Securities

          From time to time, the Portfolio may invest in securities of other
          investment companies. The Portfolio is subject to the provisions of
          Section 12(d)(1) of the 1940 Act. The Portfolio may invest in
          securities of money market funds managed by Janus Capital in excess of
          the limitations of Section 12(d)(1) under the terms of an SEC
          exemptive order obtained by Janus Capital and the Janus Funds.

Debt Obligations

          Money Market Portfolio may invest in debt obligations of domestic
          issuers. In general, sales of these securities may not be made absent
          registration under the Securities Act of 1933 or the availability of
          an appropriate exemption. Pursuant to Section 4(2) of the 1933 Act or
          Rule 144A adopted under the 1933 Act, however, some of these
          securities are eligible for resale to institutional investors, and
          accordingly, Janus Capital may determine that a liquid market exists
          for such a security pursuant to guidelines adopted by the Trustees.

                                                                               7
<PAGE>

Obligations of Financial Institutions

          The Portfolio may invest in obligations of financial institutions.
          Examples of obligations in which the Portfolio may invest include
          negotiable certificates of deposit, bankers' acceptances, time
          deposits and other obligations of U.S. banks (including savings and
          loan associations) having total assets in excess of one billion
          dollars and U.S. branches of foreign banks having total assets in
          excess of ten billion dollars. The Portfolio may also invest in
          Eurodollar and Yankee bank obligations as discussed below and other
          U.S. dollar-denominated obligations of foreign banks having total
          assets in excess of ten billion dollars that Janus Capital believes
          are of an investment quality comparable to obligations of U.S. banks
          in which the Portfolio may invest.

          Certificates of deposit represent an institution's obligation to repay
          funds deposited with it that earn a specified interest rate over a
          given period. Bankers' acceptances are negotiable obligations of a
          bank to pay a draft which has been drawn by a customer and are usually
          backed by goods in international trade. Time deposits are
          non-negotiable deposits with a banking institution that earn a
          specified interest rate over a given period. Fixed time deposits,
          which are payable at a stated maturity date and bear a fixed rate of
          interest, generally may be withdrawn on demand by the Portfolio but
          may be subject to early withdrawal penalties and that could reduce the
          Portfolio's yield. Unless there is a readily available market for
          them, time deposits that are subject to early withdrawal penalties and
          that mature in more than seven days will be treated as illiquid
          securities.

          Eurodollar bank obligations are dollar-denominated certificates of
          deposit or time deposits issued outside the U.S. capital markets by
          foreign branches of U.S. banks and by foreign banks. Yankee bank
          obligations are dollar-denominated obligations issued in the U.S.
          capital markets by foreign banks.

          Foreign, Eurodollar (and to a limited extent, Yankee) bank obligations
          are subject to certain sovereign risks. One such risk is the
          possibility that a foreign government might prevent dollar-denominated
          funds from flowing across its borders. Other risks include: adverse
          political and economic developments in a foreign country; the extent
          and quality of government regulation of financial markets and
          institutions; the imposition of foreign withholding taxes; and
          exploration or nationalization of foreign issuers.

U.S. Government Securities

          Money Market Portfolio may invest in U.S. Government Securities. U.S.
          Government Securities shall have the meaning set forth in the 1940
          Act. The 1940 Act defines U.S. Government Securities to include
          securities issued or guaranteed by the U.S. Government, its agencies
          and instrumentalities. U.S. Government Securities may also include
          repurchase agreements collateralized by and municipal securities
          escrowed with or refunded with U.S. government securities. U.S.
          Government Securities in which the Portfolio may invest include U.S.
          Treasury securities and obligations issued or guaranteed by U.S.
          government agencies and instrumentalities that are backed by the full
          faith and credit of the U.S. government, such as those guaranteed by
          the Small Business Administration or issued by the Government National
          Mortgage Association. In addition, U.S. Government Securities in which
          the Portfolio may invest include securities supported primarily or
          solely by the creditworthiness of the issuer, such as securities of
          the Federal National Mortgage Association, the Federal Home Loan
          Mortgage Corporation and the Tennessee Valley Authority. There is no
          guarantee that the U.S. government will support securities not backed
          by its full faith and credit. Accordingly, although these securities
          have historically involved little risk of loss of principal if held to
          maturity, they may involve more risk than securities backed by the
          full faith and credit of the U.S. government.

 8
<PAGE>

Municipal Leases

          The Portfolio may invest in municipal leases. Municipal leases
          frequently have special risks not normally associated with general
          obligation or revenue bonds. Municipal leases are municipal securities
          which may take the form of a lease or an installment purchase or
          conditional sales contract. Municipal leases are issued by state and
          local governments and authorities to acquire a wide variety of
          equipment and facilities. Leases and installment purchase or
          conditional sale contracts (which normally provide for title to the
          leased asset to pass eventually to the government issuer) have evolved
          as a means for governmental issuers to acquire property and equipment
          without meeting the constitutional and statutory requirements for the
          issuance of debt. The debt-issuance limitations of many state
          constitutions and statutes are deemed to be inapplicable because of
          the inclusion in many leases or contracts of "non-appropriation"
          clauses that provide that the governmental issuer has no obligation to
          make future payments under the lease or contract unless money is
          appropriated for such purpose by the appropriate legislative body on a
          yearly or other periodic basis. The Portfolio will only purchase
          municipal leases subject to a non-appropriation clause when the
          payment of principal and accrued interest is backed by an
          unconditional irrevocable letter of credit, or guarantee of a bank or
          other entity that meets the criteria described in the Prospectus under
          "Taxable Investments."

          In evaluating municipal lease obligations, Janus Capital will consider
          such factors as it deems appropriate, including: (a) whether the lease
          can be canceled; (b) the ability of the lease obligee to direct the
          sale of the underlying assets; (c) the general creditworthiness of the
          lease obligor; (d) the likelihood that the municipality will
          discontinue appropriating funding for the leased property in the event
          such property is no longer considered essential by the municipality;
          (e) the legal recourse of the lease obligee in the event of such a
          failure to appropriate funding; (f) whether the security is backed by
          a credit enhancement such as insurance; and (g) any limitations which
          are imposed on the lease obligor's ability to utilize substitute
          property or services other than those covered by the lease obligation.
          If a lease is backed by an unconditional letter of credit or other
          unconditional credit enhancement, then Janus Capital may determine
          that a lease is an eligible security solely on the basis of its
          evaluation of the credit enhancement.

          Municipal leases, like other municipal debt obligations, are subject
          to the risk of non-payment. The ability of issuers of municipal leases
          to make timely lease payments may be adversely impacted in general
          economic downturns and as relative governmental cost burdens are
          allocated and reallocated among federal, state and local governmental
          units. Such non-payment would result in a reduction of income to the
          Portfolio, and could result in a reduction in the value of the
          municipal lease experiencing non-payment and a potential decrease in
          the net asset value of the Portfolio.

                                                                               9
<PAGE>
Performance data

          The Portfolio may provide current annualized and effective annualized
          yield quotations of the Shares based on the Shares' daily dividends.
          These quotations may from time to time be used in advertisements,
          shareholder reports or other communications to shareholders. All
          performance information supplied by the Portfolio in advertising is
          historical and is not intended to indicate future returns.

          The  Service  Shares  commenced  operations  on January  1, 2000.  The
          returns  shown for the Service  Shares of the Money  Market  Portfolio
          reflect the historical performance of a different class of shares (the
          Institutional  Shares)  prior  to  January  1,  2000.  The  historical
          performance of the Institutional Shares has been restated for purposes
          of  the  Service  Shares  performance  based  on  the  Service  Shares
          estimated fees and expenses (ignoring any fee and expense limitations)
          except where that restatement  results in higher  performance than the
          actual historical performance of the Institutional Shares.

          In performance advertising, the Portfolio may compare any of its
          performance information with data published by independent evaluators
          such as Morningstar, Inc., Lipper Analytical Services, Inc., or
          CDC/Wiesenberger, Donoghue's Money Fund Report or other companies
          which track the investment performance of investment companies ("Fund
          Tracking Companies"). The Portfolio may also compare its performance
          information with the performance of recognized stock, bond and other
          indices, including but not limited to the Municipal Bond Buyers
          Indices, the Salomon Brothers Bond Index, the Lehman Brothers Bond
          Index, the Standard & Poor's 500 Composite Stock Price Index, the Dow
          Jones Industrial Average, U.S. Treasury bonds, bills or notes and
          changes in the Consumer Price Index as published by the U.S.
          Department of Commerce. The Portfolio may refer to general market
          performance over past time periods such as those published by Ibbotson
          Associates (for instance, its "Stocks, Bonds, Bills and Inflation
          Yearbook"). The Portfolio may also refer in such materials to mutual
          fund performance rankings and other data published by Fund Tracking
          Companies. Performance advertising may also refer to discussions of
          the Portfolio and comparative mutual fund data and ratings reported in
          independent periodicals, such as newspapers and financial magazines.

          Any current yield quotation of the Portfolio's Shares which is used in
          such a manner as to be subject to the provisions of Rule 482(d) under
          the Securities Act of 1933, as amended, shall consist of an annualized
          historical yield, carried at least to the nearest hundredth of one
          percent, based on a specific seven calendar day period. The current
          yield of the Portfolio's Shares shall be calculated by (a) determining
          the net change during a seven calendar day period in the value of a
          hypothetical account having a balance of one share at the beginning of
          the period, (b) dividing the net change by the value of the account at
          the beginning of the period to obtain a base period return, and (c)
          multiplying the quotient by 365/7 (i.e., annualizing). For this
          purpose, the net change in account value will reflect the value of
          additional shares purchased with dividends declared on the original
          share and dividends declared on both the original share and any such
          additional shares, but will not reflect any realized gains or losses
          from the sale of securities or any unrealized appreciation or
          depreciation on portfolio securities. In addition, the Portfolio may
          advertise effective yield quotations. Effective yield quotations are
          calculated by adding 1 to the base period return, raising the sum to a
          power equal to 365/7, and subtracting 1 from the result (i.e.,
          compounding).

          Income calculated for the purpose of determining the yield of the
          Portfolio's Shares differs from income as determined for other
          accounting purposes. Because of the different accounting methods used,
          and because of the compounding assumed in yield calculations, the
          yield quoted for the Portfolio's Shares may differ from the rate of
          distribution the Shares paid over the same period or the rate of
          income reported in the Portfolio's financial statements.

10
<PAGE>


          Although published yield information is useful to investors in
          reviewing the performance of the Portfolio's Shares, investors should
          be aware that the yield fluctuates from day to day and that the
          Share's yield for any given period is not an indication or
          representation by the Portfolio of future yields or rates of return on
          the Portfolio's Shares. The Shares' yield is not fixed or guaranteed,
          and an investment in the Portfolio is not insured. Accordingly, the
          Shares' yield information may not necessarily be used to compare
          Portfolio Shares with investment alternatives which, like money market
          instruments or bank accounts, may provide a fixed rate of interest. In
          addition, because investments in the Portfolio are not insured or
          guaranteed, the yield information may not necessarily be used to
          compare the Portfolio with investment alternatives which are insured
          or guaranteed.

                                                                              11
<PAGE>


Determination of net asset value

          Pursuant to the rules of the SEC, the Trustees have established
          procedures to stabilize the Portfolio's net asset value at $1.00 per
          Share. These procedures include a review of the extent of any
          deviation of net asset value per Share as a result of fluctuating
          interest rates, based on available market rates, from the Portfolio's
          $1.00 amortized cost price per Share. Should that deviation exceed
          1/2 of 1%, the Trustees will consider whether any action should be
          initiated to eliminate or reduce material dilution or other unfair
          results to shareholders. Such action may include redemption of shares
          in kind, selling portfolio securities prior to maturity, reducing or
          withholding dividends and utilizing a net asset value per share as
          determined by using available market quotations. The Portfolio i) will
          maintain a dollar-weighted average portfolio maturity of 90 days or
          less; ii) will not purchase any instrument with a remaining maturity
          greater than 397 days or subject to a repurchase agreement having a
          duration of greater than 397 days; iii) will limit portfolio
          investments, including repurchase agreements, to those U.S.
          dollar-denominated instruments that Janus Capital has determined
          present minimal credit risks pursuant to procedures established by the
          Trustees; and iv) will comply with certain reporting and recordkeeping
          procedures. The Trust has also established procedures to ensure that
          portfolio securities meet the Portfolio's high quality criteria.

12
<PAGE>


Investment adviser

          As stated in the Prospectus, the Portfolio has an Investment Advisory
          Agreement with Janus Capital, 100 Fillmore Street, Denver, Colorado
          80206-4928. The Advisory Agreement provides that Janus Capital will
          furnish continuous advice and recommendations concerning the
          Portfolio's investments, provide office space for the Portfolio and
          pay the salaries, fees and expenses of all Portfolio officers and of
          those Trustees who are affiliated with Janus Capital. Janus Capital
          also may make payments to selected broker-dealer firms or institutions
          which were instrumental in the acquisition of shareholders for the
          Portfolio or which performed services with respect to shareholder
          accounts. The minimum aggregate size required for eligibility for such
          payments, and the factors in selecting the broker-dealer firms and
          institutions to which they will be made, are determined from time to
          time by Janus Capital. Janus Capital is also authorized to perform the
          management and administrative services necessary for the operation of
          the Portfolio.

          The Portfolio pays custodian agent fees and expenses, brokerage
          commissions and dealer spreads and other expenses in connection with
          the execution of Portfolio transactions, legal and accounting
          expenses, interest and taxes, registration fees, expenses of
          shareholders' meetings, and reports to shareholders, fees and expenses
          of Trustees who are not affiliated with Janus Capital, and other costs
          of complying with applicable laws regulating the sale of Portfolio
          shares. Pursuant to the Advisory Agreement, Janus Capital furnishes
          certain other services, including net asset value determination,
          portfolio accounting and record keeping for which the Portfolio may
          reimburse Janus Capital for its costs.


          The Portfolio has agreed to compensate Janus Capital for its advisory
          services by the monthly payment of an advisory fee at the annual rate
          of .25% of the Portfolio's average daily net assets. Janus Capital has
          agreed to reimburse the Portfolio by the amount, if any, that the
          Portfolio's normal operating expenses in any fiscal year, including
          the investment advisory fee but excluding the distribution fee
          described below, brokerage commissions, interest, taxes and
          extraordinary expenses, exceed .50% of average daily net assets. Janus
          Capital has agreed to continue such waivers until at least the next
          annual renewal of the advisory agreements. Mortality risk, expense
          risk and other charges imposed by participating insurance companies
          are also excluded from the above expense limitation.


          For the fiscal year ended December 31, 1998, the advisory fee was
          $79,201. For the fiscal year ended December 31, 1997 and December 31,
          1996, the advisory fees were $22,333 and $9,287, respectively. For the
          fiscal years ended December 31, 1997 and December 31, 1996, Janus
          Capital waived $2,184 and $9,287, respectively (the advisory fee
          waivers by Janus Capital exceeded the advisory fees for 1996).

          The Advisory Agreement is dated July 1, 1997 and will continue in
          effect from year to year so long as such continuance is approved
          annually by a majority of the Portfolio's Trustees who are not parties
          to the Advisory Agreement or interested persons of any such party, and
          by either a majority of the outstanding voting shares or the Trustees.
          The Advisory Agreement i) may be terminated without the payment of any
          penalty by the Portfolio or Janus Capital on 60 days' written notice;
          ii) terminates automatically in the event of its assignment; and iii)
          generally, may not be amended without the approval by vote of a
          majority of the Trustees, including the Trustees who are not
          interested persons of the Portfolio or Janus Capital and, to the
          extent required by the 1940 Act, the vote of a majority of the
          outstanding voting securities of the Portfolio.

          Janus Capital also acts as sub-advisor  for a number of  private-label
          mutual  funds and  provides  separate  account  advisory  services for
          institutional accounts.  Investment decisions for each account managed
          by Janus Capital, including the Portfolio, are made independently from
          those  for  any  other  account  that is or may in the  future  become
          managed by Janus Capital or its affiliates.  If, however,  a number of
          accounts managed by Janus Capital are contemporaneously engaged in the
          purchase or sale of the same  security,  the orders may be  aggregated
          and/or the  transactions  may be  averaged  as to price and  allocated
          equitably to

                                                                              13
<PAGE>

          each account.  In some cases,  this policy might adversely  affect the
          price  paid or  received  by an  account  or the size of the  position
          obtained or liquidated for an account.  Pursuant to an exemptive order
          granted by the SEC,  the  Portfolio  and other funds  advised by Janus
          Capital may also transfer daily  uninvested  cash balances into one or
          more joint trading accounts.  Assets in the joint trading accounts are
          invested in money market instruments and the proceeds are allocated to
          the participating funds on a pro rata basis.

          Kansas City Southern Industries, Inc. ("KCSI") owns approximately 82%
          of the outstanding voting stock of Janus Capital, most of which it
          acquired in 1984. KCSI is a publicly traded holding company whose
          primary subsidiaries are engaged in transportation, information
          processing and financial services. Thomas H. Bailey, President and
          Chairman of the Board of Janus Capital, owns approximately 12% of its
          voting stock and, by agreement with KCSI, selects a majority of Janus
          Capital's Board.


          [TO BE UPDATED] KCSI has announced its intention to separate its
          transportation and financial services businesses. KCSI is currently
          studying alternatives for completion of the separation that meet its
          business objectives without risking adverse tax consequences. KCSI
          expects completion of the separation to be contemplated in 1999.


          Each account managed by Janus Capital has its own investment objective
          and is managed in accordance with that objective by a particular
          portfolio manager or team of portfolio managers. As a result, from
          time to time two or more different managed accounts may pursue
          divergent investment strategies with respect to investments or
          categories of investments.

          Janus Capital does not permit portfolio managers to purchase and sell
          securities for their own accounts except under the limited exceptions
          contained in Janus Capital's policy regarding personal investing by
          directors, officers and employees of Janus Capital and the Portfolio.
          The policy requires investment personnel and officers of Janus
          Capital, inside directors of Janus Capital and the Portfolio and other
          designated persons deemed to have access to current trading
          information to pre-clear all transactions in securities not otherwise
          exempt under the policy. Requests for trading authority will be denied
          when, among other reasons, the proposed personal transaction would be
          contrary to the provisions of the policy or would be deemed to
          adversely affect any transaction then known to be under consideration
          for or to have been effected on behalf of any client account,
          including the Portfolio.

          In addition to the pre-clearance requirement described above, the
          policy subjects investment personnel, officers and directors/Trustees
          of Janus Capital and the Trust to various trading restrictions and
          reporting obligations. All reportable transactions are required to be
          reviewed for compliance with Janus Capital's policy. Those persons
          also may be required under certain circumstances to forfeit their
          profits made from personal trading.

          The provisions of the policy are administered by and subject to
          exceptions authorized by Janus Capital.

14
<PAGE>
Custodian, transfer agent and certain affiliations

          Citibank, N.A., 111 Wall Street, 24th Floor, Zone 5, New York, NY
          10043, is the Portfolio's custodian. The custodian holds the
          Portfolio's assets in safekeeping and collects and remits the income
          thereon, subject to the instructions of the Portfolio.


          Janus Service Corporation, P.O. Box 173375, Denver, Colorado
          80217-3375, a wholly-owned subsidiary of Janus Capital, is the
          Portfolio's transfer agent. In addition, Janus Service provides
          certain other administrative, recordkeeping and shareholder relations
          services to the Portfolio. Janus Service is not compensated for its
          services related to the Shares, except for out-of-pocket costs.


          Janus Distributors, Inc. ("Janus Distributors"), 100 Fillmore Street,
          Denver, Colorado 80206-4928, a wholly-owned subsidiary of Janus
          Capital, is a distributor of the Portfolio. Janus Distributors is
          registered as a broker-dealer under the Securities Exchange Act of
          1934 (the "Exchange Act") and is a member of the National Association
          of Securities Dealers, Inc.

          The Portfolio pays DST Systems, Inc., a subsidiary of KCSI, license
          fees at the rate of $3.98 per shareholder account for the use of DST's
          shareholder accounting system. The Portfolio also pays DST $1.10 per
          closed shareholder account. The Portfolio pays DST for the use of its
          portfolio and fund accounting system a monthly base fee of $250 to
          $1,250 per month based on the number of Janus funds using the system
          and an asset charge of $1 per million dollars of net assets (not to
          exceed $500 per month).

          The Trustees have authorized the Portfolio to use another affiliate of
          DST as introducing broker for certain Portfolio transactions as a
          means to reduce Portfolio expenses through credits against the charges
          of DST and its affiliates with regard to commissions earned by such
          affiliate. See "Portfolio Transactions and Brokerage."

                                                                              15
<PAGE>
Portfolio transactions and brokerage

          Decisions as to the assignment of portfolio business for the Portfolio
          and negotiation of its commission rates are made by Janus Capital
          whose policy is to obtain the "best execution" (prompt and reliable
          execution at the most favorable security price) of all portfolio
          transactions.

          In selecting brokers and dealers and in negotiating commissions, Janus
          Capital considers a number of factors, including but not limited to:
          Janus Capital's knowledge of currently available negotiated commission
          rates or prices of securities currently available and other current
          transaction costs; the nature of the security being traded; the size
          and type of the transaction; the nature and character of the markets
          for the security to be purchased or sold; the desired timing of the
          trade; the activity existing and expected in the market for the
          particular security; confidentiality; the quality of the execution,
          clearance and settlement services; financial stability of the broker
          or dealer; the existence of actual or apparent operational problems of
          any broker or dealer; and research products or services provided. In
          recognition of the value of the foregoing factors, Janus Capital may
          place portfolio transactions with a broker or dealer with whom it has
          negotiated a commission that is in excess of the commission another
          broker or dealer would have charged for effecting that transaction if
          Janus Capital determines in good faith that such amount of commission
          was reasonable in relation to the value of the brokerage and research
          provided by such broker or dealer viewed in terms of either that
          particular transaction or of the overall responsibilities of Janus
          Capital. These research and other services may include, but are not
          limited to, general economic and security market reviews, industry and
          company reviews, evaluations of securities, recommendations as to the
          purchase and sale of securities, and access to third party
          publications, computer and electronic equipment and software. Research
          received from brokers or dealers is supplemental to Janus Capital's
          own research efforts.

          For the fiscal years ended December 31, 1998, December 31, 1997 and
          December 31, 1996, the Portfolio did not incur any brokerage
          commissions. The Portfolio generally buys and sells securities in
          principal and agency transactions in which no commissions are paid.
          However, the Portfolio may engage an agent and pay commissions for
          such transactions if Janus Capital believes that the net result of the
          transaction to the Portfolio will be no less favorable than that of
          contemporaneously available principal transactions.

          Janus Capital may use research products and services in servicing
          other accounts in addition to the Portfolio. If Janus Capital
          determines that any research product or service has a mixed use, such
          that it also serves functions that do not assist in the investment
          decision-making process, Janus Capital may allocate the costs of such
          service or product accordingly. Only that portion of the product or
          service that Janus Capital determines will assist it in the investment
          decision-making process may be paid for in brokerage commission
          dollars. Such allocation may create a conflict of interest for Janus
          Capital.

          Janus Capital may consider sales of Portfolio shares or shares of
          other Janus funds by a broker-dealer or the recommendation of a
          broker-dealer to its customers that they purchase such shares as a
          factor in the selection of broker-dealers to execute Portfolio
          transactions. Janus Capital may also consider payments made by brokers
          effecting transactions for a Portfolio i) to the Portfolio or ii) to
          other persons on behalf of the Portfolio for services provided to the
          Portfolio for which it would be obligated to pay. In placing portfolio
          business with such broker-dealers, Janus Capital will seek the best
          execution of each transaction.

          When the Portfolio purchases or sells a security in the
          over-the-counter market, the transaction takes place directly with a
          principal market-maker, without the use of a broker, except in those
          circumstances where in the opinion of Janus Capital better prices and
          executions will be achieved through the use of a broker.

16
<PAGE>

          As of December 31, 1998, the Portfolio owned securities of its regular
          broker-dealers (or parents) as shown below:

<TABLE>
<CAPTION>
                                                                                                 Value of
                                                                   Name of                      Securities
Portfolio Name                                                   Broker-Dealer                     Owned
- ----------------------------------------------------------------------------------------------------------
<S>                                              <C>                                            <C>
Money Market Portfolio                           ABN AMRO Securities, Inc.                      $4,920,000
                                                 CS First Boston                                $1,965,875
                                                 Goldman Sachs Group, L.P.                      $1,999,938
                                                 Morgan Stanley, Dean Witter, Discover & Co.    $1,977,040
</TABLE>

                                                                              17
<PAGE>
Trustees and officers

          The following are the names of the Trustees and officers of Janus
          Aspen Series, a Delaware business trust of which the Portfolio is a
          series, together with a brief description of their principal
          occupations during the last five years.

TRUSTEES



Thomas H. Bailey, Age 62 - Trustee, Chairman and President*#
100 Fillmore Street
Denver, CO 80206-4928

- --------------------------------------------------------------------------------
          Trustee, Chairman and President of Janus Investment Fund+. Chairman,
          Chief Executive Officer, Director and President of Janus Capital.
          Director of Janus Distributors, Inc.



James P. Craig, III, Age 43 - Trustee and Executive Vice President*#
100 Fillmore Street

Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Trustee and Executive Vice President of Janus Investment Fund+.  Chief
          Investment Officer,  Director of Research,  Vice Chairman and Director
          of Janus  Capital.  Formerly  Executive  Vice  President and Portfolio
          Manager of Growth  Portfolio and Janus Fund (from  inception and 1986,
          respectively,  until December 1999). Formerly Executive Vice President
          and  Co-Manager of Janus Venture Fund (from  inception until December
          1999).



Gary O. Loo, Age 59 - Trustee#
102 N. Cascade, Suite 500

Colorado Springs, CO 80903
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund+. President and a Director of High
          Valley Group, Inc., Colorado Springs, Colorado.



Dennis B. Mullen, Age 56 - Trustee
14103 Denver West Parkway

Golden, CO 80401
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund+. Private Investor. Formerly
          (1997-1998), Chief Financial Officer - Boston Market Concepts, Boston
          Chicken, Inc., Golden, Colorado (restaurant chain); (1993-1997),
          President and Chief Executive Officer of BC Northwest, L.P., a
          franchise of Boston Chicken, Inc., Bellevue, Washington (restaurant
          chain).

- --------------------------------------------------------------------------------
*Interested person of the Trust and of Janus Capital.
#Member of the Executive Committee.
+Includes comparable office with various Janus funds that were reorganized into
 Janus Investment Fund on August 7, 1992.

18
<PAGE>


James T. Rothe, Age 56 - Trustee

102 South Tejon Street, Suite 1100
Colorado Springs, CO 80903
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund+. Professor of Business, University
          of Colorado, Colorado Springs, Colorado. Principal, Phillips-Smith
          Retail Group, Colorado Springs, Colorado (a venture capital firm).
          Formerly (1986-1994), Dean of the College of Business, University of
          Colorado, Colorado Springs, Colorado.



William D. Stewart, Age 55 - Trustee#
5330 Sterling Drive

Boulder, CO 80302
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund+. President of HPS Division of MKS
          Instruments, Boulder, Colorado (manufacturer of vacuum fittings and
          valves).



Martin H. Waldinger, Age 61 - Trustee

4940 Sandshore Court
San Diego, CA 92130
- --------------------------------------------------------------------------------
          Trustee of Janus Investment Fund+. Private Consultant. Formerly (1993
          to 1996), Director of Run Technologies, Inc., a software development
          firm, San Carlos, California. Formerly (1989 to 1993), President and
          Chief Executive Officer of Bridgecliff Management Services, Campbell,
          California (a condominium association management company).


OFFICERS



Sharon S. Pichler, Age 50 - Executive Vice President and Portfolio Manager*

100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Executive Vice President and Portfolio Manager of Janus Money Market
          Fund and Janus Tax-Exempt Money Market Fund series of Janus Investment
          Fund+. Formerly (1994-1998) Executive Vice President and Portfolio
          Manager of Janus Government Money Market Fund. Vice President of Janus
          Capital. Formerly, Assistant Vice President and portfolio manager at
          USAA Investment Management Co. (1990-1994).

- --------------------------------------------------------------------------------
+Includes comparable office with various Janus funds that were reorganized into
 Janus Investment Fund on August 7, 1992.
*Interested person of the Trust and of Janus Capital.


                                                                              19
<PAGE>


Thomas A. Early, Age 45 - Vice President and General Counsel*
100 Fillmore Street
Denver, CO 80206-4928

- --------------------------------------------------------------------------------
          Vice President and General Counsel of Janus Investment Fund. Vice
          President, General Counsel and Secretary of Janus Capital. Vice
          President and General Counsel of Janus Service Corporation, Janus
          Distributors, Inc. and Janus Capital International, Ltd. Director of
          Janus World Funds Plc. Formerly (1997 to 1998), Executive Vice
          President and General Counsel of Prudential Investments Fund
          Management LLC, Newark, New Jersey. Formerly (1994 to 1997), Vice
          President and General Counsel of Prudential Retirement Services,
          Newark, New Jersey. Formerly (1988 to 1994), Associate General Counsel
          and Chief Financial Services Counsel, Frank Russell Company, Tacoma,
          Washington.



Steven R. Goodbarn, Age 42 - Vice President and Chief Financial Officer*

100 Fillmore Street
Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Vice President and Chief Financial Officer of Janus Investment Fund+.
          Vice President of Finance, Treasurer and Chief Financial Officer of
          Janus Capital, Janus Service Corporation, and Janus Distributors, Inc.
          Director of Janus Service Corporation and Janus Distributors, Inc. and
          Janus World Funds Plc. Director, Treasurer and Vice President of
          Finance of Janus Capital International Ltd. Formerly (1992-1996),
          Treasurer of Janus Investment Fund and Janus Aspen Series.


Glenn P. O'Flaherty, Age 41 - Treasurer and Chief Accounting Officer*
100 Fillmore Street

Denver, CO 80206-4928
- --------------------------------------------------------------------------------
          Treasurer and Chief Accounting Officer of Janus Investment Fund. Vice
          President of Janus Capital. Formerly (1991-1997), Director of Fund
          Accounting, Janus Capital.


Kelley Abbot Howes, Age 34 - Assistant Vice President and Secretary*
100 Fillmore Street


Denver, CO 80206-4928


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


          Assistant Vice President and Secretary of Janus Investment Fund.
          Director and President of Janus Distributors, Inc. Assistant Vice
          President and Associate Counsel of Janus Capital.

- --------------------------------------------------------------------------------
*Interested person of the Trust and of Janus Capital.
+Includes comparable office with various Janus funds that were reorganized into
 Janus Investment Fund on August 7, 1992.

          The Trustees are responsible for major decisions relating to the
          Portfolio's objective, policies and techniques. The Trustees also
          supervise the operation of the Portfolio by its officers and review
          the investment decisions of the officers although they do not actively
          participate on a regular basis in making such decisions.

          The Trust's Executive Committee shall have and may exercise all the
          powers and authority of the Trustees except for matters requiring
          action by all Trustees pursuant to the Trust's Bylaws or Trust
          Instrument, Delaware law or the 1940 Act.

20
<PAGE>


          The Money Market Funds Committee, consisting of Messrs. Loo, Mullen
          and Rothe, monitors the compliance with policies and procedures
          adopted particularly for money market funds.


          The following table shows the aggregate compensation paid to each
          Trustee by the Portfolio and all funds advised and sponsored by Janus
          Capital (collectively, the "Janus Funds") for the periods indicated.
          None of the Trustees receive pension or retirement benefits from the
          Portfolio or the Janus Funds.

<TABLE>
<CAPTION>
                                                              Aggregate Compensation       Total Compensation
                                                              from the Portfolio for    from the Janus Funds for
                                                                 fiscal year ended         calendar year ended
Name of Person, Position                                         December 31, 1998         December 31, 1998**
<S>                                                           <C>                       <C>
- -----------------------------------------------------------------------------------------------------------------
Thomas H. Bailey, Chairman and Trustee*                                $  0                      $     0
James P. Craig, III, Trustee*                                          $  0                      $     0
William D. Stewart, Trustee                                            $ 36                      $82,000
Gary O. Loo, Trustee                                                   $ 73                      $74,000
Dennis B. Mullen, Trustee                                              $ 77                      $82,000
Martin H. Waldinger, Trustee                                           $ 40                      $74,000
James T. Rothe, Trustee                                                $ 75                      $82,000
</TABLE>

 * An interested person of the Portfolio and of Janus Capital. Compensated by
   Janus Capital and not the Portfolio.
** As of December 31, 1998, Janus Funds consisted of two registered investment
   companies comprised of a total of 32 funds.

                                                                              21
<PAGE>
Purchase of Shares


          Shares of the Portfolio can be purchased only by (i) the separate
          accounts of participating insurance companies for the purpose of
          funding variable insurance contracts and (ii) qualified plans.
          Participating insurance companies and certain designated organizations
          are authorized to receive purchase orders on the Portfolio's behalf,
          and those organizations are authorized to designate their agents and
          affiliates as intermediaries to receive purchase orders. Purchase
          orders are deemed received by the Portfolio when authorized
          organizations, their agents or affiliates receive the order. The
          Portfolio is not responsible for the failure of any designated
          organization or its agents or affiliates to carry out its obligations
          to its customers. Shares of the Portfolio are purchased at the NAV per
          share as determined at the close of regular trading session of the New
          York Stock Exchange next occurring after a purchase order is received
          and accepted by the Portfolio or its authorized agent. In order to
          receive a day's dividend, your order must be received by the close of
          the regular trading session of the NYSE. The prospectus for your
          insurance company's separate account or your plan documents contain
          detailed information about investing in the Portfolio.


22
<PAGE>

Distribution and Shareholder Servicing plan




          Under a distribution and shareholder servicing plan ("Plan") adopted
          in accordance with Rule 12b-1 under the Investment Company Act of 1940
          (the "1940 Act"), the Shares may pay Janus Distributors, Inc., the
          Trust's distributor, a fee at an annual rate of up to 0.25% of the
          average daily net assets of the Shares of the Portfolio. Under the
          terms of the Plan, the Trust is authorized to make payments to Janus
          Distributors for remittance to insurance companies and qualified plan
          service providers as compensation for distribution and shareholder
          servicing performed by such service providers. The Plan is a
          compensation type plan and permits the payment at an annual rate of up
          to 0.25% of the average daily net assets of the Shares of a Portfolio
          for recordkeeping and administrative services as well as activities
          which are primarily intended to result in sales of the Shares,
          including but not limited to preparing, printing and distributing
          prospectuses, Statements of Additional Information, shareholder
          reports, and educational materials to prospective and existing
          contract owners and plan participants; responding to inquiries by
          contract owners and plan participants; receiving and answering
          correspondence; contract owner and participant level recordkeeping and
          administrative services; and similar activities. On September 14,
          1999, Trustees unanimously approved the Plan which became effective on
          that date. The Plan and any Rule 12b-1 related agreement that is
          entered into by the Portfolio or Janus Distributors in connection with
          the Plan will continue in effect for a period of more than one year
          only so long as continuance is specifically approved at least annually
          by a vote of a majority of the Trustees, and of a majority of the
          Trustees who are not interested persons (as defined in the 1940 Act)
          of the Trust and who have no direct or indirect financial interest in
          the operation of the Plan or any related agreements ("12b-1
          Trustees"). All material amendments to the Plan must be approved by a
          majority vote of the Trustees, including a majority of the 12b-1
          Trustees, at a meeting called for that purpose. In addition, the Plan
          may be terminated at any time, without penalty, by vote of a majority
          of the outstanding Shares of the Portfolio or by vote of a majority of
          12b-1 Trustees.


                                                                              23
<PAGE>
Redemption of Shares


          Redemptions, like purchases, may only be effected through the separate
          accounts of participating insurance companies or qualified plans.
          Certain designated organizations are authorized to receive redemption
          orders on the Portfolio's behalf and those organizations are
          authorized to designate their agents and affiliates as intermediaries
          to receive redemption orders. Redemption orders are deemed received by
          the Portfolio when authorized organizations, their agents or
          affiliates receive the order. The Portfolio is not responsible for the
          failure of any designated organization or its agents or affiliates to
          carry out its obligations to its customers. Shares normally will be
          redeemed for cash, although the Portfolio retains the right to redeem
          its shares in kind under unusual circumstances, in order to protect
          the interests of remaining shareholders, by delivery of securities
          selected from its assets at its discretion. However, the Portfolio is
          governed by Rule 18f-1 under the 1940 Act, which requires the
          Portfolio to redeem shares solely in cash up to the lesser of $250,000
          or 1% of the net asset value of the Portfolio during any 90-day period
          for any one shareholder. Should redemptions by any shareholder exceed
          such limitation, the Portfolio will have the option of redeeming the
          excess in cash or in kind. If shares are redeemed in kind, the
          redeeming shareholder might incur brokerage costs in converting the
          assets to cash. The method of valuing securities used to make
          redemptions in kind will be the same as the method of valuing
          portfolio securities described under "Determination of Net Asset
          Value" and such valuation will be made as of the same time the
          redemption price is determined.


          The right to require the Portfolio to redeem its shares may be
          suspended, or the date of payment may be postponed, whenever (1)
          trading on the NYSE is restricted, as determined by the SEC, or the
          NYSE is closed except for holidays and weekends, (2) the SEC permits
          such suspension and so orders, or (3) an emergency exists as
          determined by the SEC so that disposal of securities or determination
          of NAV is not reasonably practicable.

24
<PAGE>
Dividends and tax status

          Dividends representing substantially all of the net investment income
          and any net realized gains on sales of securities are declared daily,
          Saturdays, Sundays and holidays included, and distributed on the last
          business day of each month. If a month begins on a Saturday, Sunday,
          or holiday, dividends for those days are declared at the end of the
          preceding month and distributed on the first business day of the
          month. The Portfolio intends to qualify as a regulated investment
          company by satisfying certain requirements prescribed by Subchapter M
          of the Code. In addition, because a class of shares of the Portfolio
          are sold in connection with variable insurance contracts, the
          Portfolio intends to comply with the diversification requirements of
          Internal Revenue Code Section 817(h) related to the tax-deferred
          status of insurance company separate accounts.

          All income dividends on the Portfolio's Shares are reinvested
          automatically in additional Shares of the Portfolio at the NAV
          determined on the first business day following the record date.


          Because Shares of the Portfolio can only be purchased through variable
          insurance contracts or qualified plans, it is anticipated that any
          income dividends or capital gains distributions will be exempt from
          current taxation if left to accumulate within such plans. See the
          prospectus for the separate account of the related insurance company
          or the plan documents for additional information.


                                                                              25
<PAGE>
Miscellaneous information


          The Portfolio is an open-end management investment company registered
          under the 1940 Act as a series of the Trust, which was organized as a
          Delaware business trust on May 20, 1993. The Trust Instrument permits
          the Trustees to issue an unlimited number of shares of beneficial
          interest from an unlimited number of series and classes of shares. As
          of the date of this SAI, the Trust consists of eleven series of
          shares, known as "portfolios," in three classes. Additional series
          and/or classes may be created from time to time.


SHARES OF THE TRUST

          The Trust is authorized to issue an unlimited number of shares of
          beneficial interest with a par value of $0.001 per share for each
          series of the Trust. Shares of each series of the Trust are fully paid
          and nonassessable when issued. The Shares of the Portfolio participate
          equally in dividends and other distributions by the Portfolio, and in
          residual assets of the Portfolio in the event of liquidation. Shares
          of the Portfolio have no preemptive, conversion or subscription
          rights.


          The Portfolio currently offers three classes of shares. The Shares
          discussed in this SAI are offered only in connection with investment
          in and payments under variable insurance contracts and to qualified
          retirement plans that require a fee from Portfolio assets to procure
          distribution and administrative services to contract owners and plan
          participants. A second class of shares, Retirement Shares, is offered
          only to qualified plans whose service providers require a fee from
          Trust assets for providing certain services to plan participants. The
          third class of shares, Institutional Shares, are offered only in
          connection with investment in and payments under variable contracts
          and life insurance contracts, as well as certain qualified retirement
          plans.


SHAREHOLDER MEETINGS

          The Trust does not intend to hold annual shareholder meetings.
          However, special meetings may be called for the Portfolio or for the
          Trust as a whole for purposes such as electing or removing Trustees,
          terminating or reorganizing the Trust, changing fundamental policies,
          or for any other purpose requiring a shareholder vote under the 1940
          Act. Separate votes are taken by the Portfolio or class only if a
          matter affects or requires the vote of only the Portfolio or class or
          the Portfolio's or class' interest in the matter differs from the
          interest of the other portfolios or class of the Trust. A shareholder
          is entitled to one vote for each Share owned.

VOTING RIGHTS


          A participating insurance company issuing a variable insurance
          contract will vote shares in the separate account as required by law
          and interpretations thereof, as may be amended or changed from time to
          time. In accordance with current law and interpretations, a
          participating insurance company is required to request voting
          instructions from policy owners and must vote shares in the separate
          account, including shares for which no instructions have been
          received, in proportion to the voting instructions received.
          Additional information may be found in the participating insurance
          company's separate account prospectus.


          The Trustees are responsible for major decisions relating to the
          Portfolio's policies and objectives; the Trustees oversee the
          operation of the Portfolio by its officers.

          The present  Trustees were elected by the initial trustee of the Trust
          on May 25, 1993,  and were approved by the initial  shareholder on May
          25,  1993  with the  exception  of Mr.  Craig  and Mr.  Rothe who were
          appointed  by the  Trustees  as of June 30,  1995 and as of January 1,
          1997,  respectively.  Under the Trust  Instrument,  each  Trustee will
          continue in office until the  termination  of the Trust or his earlier
          death,  retirement,  resignation,  bankruptcy,  incapacity or removal.
          Vacancies  will be filled by a  majority  of the  remaining  Trustees,
          subject to the 1940 Act.  Therefore,  no annual or regular meetings of
          shareholders

26
<PAGE>

          normally  will  be  held,  unless  otherwise  required  by  the  Trust
          Instrument  or the 1940 Act.  Subject to the  foregoing,  shareholders
          have the power to vote to elect or remove  Trustees,  to  terminate or
          reorganize  the  Portfolio,  to amend the Trust  Instrument,  to bring
          certain  derivative  actions  and on any  other  matters  on  which  a
          shareholder  vote is required by the 1940 Act,  the Trust  Instrument,
          the Trust's Bylaws or the Trustees.

          As mentioned in "Shareholder Meetings", each share of each portfolio
          of the Trust has one vote (and fractional votes for fractional
          shares). Shares of all portfolios of the Trust have noncumulative
          voting rights, which means that the holders of more than 50% of the
          shares of all portfolios of the Trust voting for the election of
          Trustees can elect 100% of the Trustees if they choose to do so and,
          in such event, the holders of the remaining shares will not be able to
          elect any Trustees. Each portfolio or class of the Trust will vote
          separately only with respect to those matters that affect only that
          portfolio or class or if an interest of a portfolio or class in the
          matter differs from the interests of other portfolios or classes of
          the Trust.

INDEPENDENT AUDITORS

          PricewaterhouseCoopers LLP, 950 Seventeenth Street, Suite 2500,
          Denver, Colorado 80202, independent accountants for the Portfolio,
          audit the Portfolio's annual financial statements and prepare its tax
          returns.

REGISTRATION STATEMENT

          The Trust has filed with the Securities and Exchange Commission,
          Washington, D.C., a Registration Statement under the Securities Act of
          1933, as amended, with respect to the securities to which this SAI
          relates. If further information is desired with respect to the
          Portfolio or such securities, reference is made to the Registration
          Statement and the exhibits filed as a part thereof.

                                                                              27
<PAGE>
Financial statements


          The following audited financial statements for Institutional Shares
          and Retirement Shares for the period ended December 31, 1998 and the
          unaudited Semiannual Report for Institutional Shares and Retirement
          Shares for the period ended June 30, 1999 are hereby incorporated into
          this Statement of Additional Information by reference to the
          Portfolio's Annual Report dated December 31, 1998 and the Portfolios'
          Semiannual Report dated June 30, 1999. A copy of each report
          accompanies this Statement of Additional Information. The Service
          Shares had not yet commenced operations as of June 30, 1999.



DOCUMENTS INCORPORATED BY REFERENCE TO THE ANNUAL REPORT AND SEMIANNUAL REPORT



          Schedules of Investments as of December 31, 1998 and June 30, 1999



          Statement of Operations for the period ended December 31, 1998 and
          June 30, 1999



          Statement of Assets and Liabilities as of December 31, 1998 and June
          30, 1999



          Statement of Changes in Net Assets for the periods ended December 31,
          1998 and 1997 and for the six months ended June 30, 1999


          Financial Highlights for each of the periods indicated

          Notes to Financial Statements


          Report of Independent Accountants dated December 31, 1998



          The portions of the Annual Report and Semiannual Report that are not
          specifically listed above are not incorporated by reference into this
          Statement of Additional Information and are not part of the
          Registration Statement.


28
<PAGE>
Appendix A

DESCRIPTION OF SECURITIES RATINGS

Moody's and Standard & Poor's

          MUNICIPAL AND CORPORATE BONDS AND MUNICIPAL LOANS

          The two highest ratings of Standard & Poor's Ratings Services ("S&P")
          for municipal and corporate bonds are AAA and AA. Bonds rated AAA have
          the highest rating assigned by S&P to a debt obligation. Capacity to
          pay interest and repay principal is extremely strong. Bonds rated AA
          have a very strong capacity to pay interest and repay principal and
          differ from the highest rated issues only in a small degree. The AA
          rating may be modified by the addition of a plus (+) or minus (-) sign
          to show relative standing within that rating category.

          The two highest ratings of Moody's Investors Service, Inc. ("Moody's")
          for municipal and corporate bonds are Aaa and Aa. Bonds rated Aaa are
          judged by Moody's to be of the best quality. Bonds rated Aa are judged
          to be of high quality by all standards. Together with the Aaa group,
          they comprise what are generally known as high-grade bonds. Moody's
          states that Aa bonds are rated lower than the best bonds because
          margins of protection or other elements make long-term risks appear
          somewhat larger than Aaa securities. The generic rating Aa may be
          modified by the addition of the numerals 1, 2 or 3. The modifier 1
          indicates that the security ranks in the higher end of the Aa rating
          category; the modifier 2 indicates a mid-range ranking; and the
          modifier 3 indicates that the issue ranks in the lower end of such
          rating category.

          SHORT TERM MUNICIPAL LOANS

          S&P's highest rating for short-term municipal loans is SP-1. S&P
          states that short-term municipal securities bearing the SP-1
          designation have a strong capacity to pay principal and interest.
          Those issues rated SP-1 which are determined to possess a very strong
          capacity to pay debt service will be given a plus (+) designation.
          Issues rated SP-2 have satisfactory capacity to pay principal and
          interest with some vulnerability to adverse financial and economic
          changes over the term of the notes.

          Moody's highest rating for short-term municipal loans is MIG-1/VMIG-1.
          Moody's states that short-term municipal securities rated MIG-1/VMIG-1
          are of the best quality, enjoying strong protection from established
          cash flows of funds for their servicing or from established and
          broad-based access to the market for refinancing, or both. Loans
          bearing the MIG-2/VMIG-2 designation are of high quality, with margins
          of protection ample although not so large as in the MIG-1/VMIG-1
          group.

          OTHER SHORT-TERM DEBT SECURITIES

          Prime-1 and Prime-2 are the two highest ratings assigned by Moody's
          for other short-term debt securities and commercial paper, and A-1 and
          A-2 are the two highest ratings for commercial paper assigned by S&P.
          Moody's uses the numbers 1, 2 and 3 to denote relative strength within
          its highest classification of Prime, while S&P uses the numbers 1, 2
          and 3 to denote relative strength within its highest classification of
          A. Issuers rated Prime-1 by Moody's have a superior ability for
          repayment of senior short-term debt obligations and have many of the
          following characteristics: leading market positions in
          well-established industries, high rates of return on funds employed,
          conservative capitalization structure with moderate reliance on debt
          and ample asset protection, broad margins in earnings coverage of
          fixed financial charges and high internal cash generation, and well
          established access to a range of financial markets and assured sources
          of alternate liquidity. Issuers rated Prime-2 by Moody's have a strong
          ability for repayment of senior short-term debt obligations and
          display many of the same characteristics displayed by issuers rated
          Prime-1, but to a lesser degree. Issuers rated A-1 by S&P carry a
          strong degree of safety regarding timely

                                                                              29
<PAGE>

          repayment.  Those issues determined to possess extremely strong safety
          characteristics are denoted with a plus (+) designation. Issuers rated
          A-2 by S&P carry a  satisfactory  degree of  safety  regarding  timely
          repayment.

FITCH

<TABLE>
                <S>                          <C>
                BOND RATING                  EXPLANATION
                -----------------------------------------------------------------------------------------
                F-1+........................ Exceptionally strong credit quality. Issues assigned this
                                             rating are regarded as having the strongest degree of
                                             assurance for timely payment.
                F-1......................... Very strong credit quality. Issues assigned this rating
                                             reflect an assurance for timely payment only slightly less
                                             in degree than issues rated F-1+.
                F-2......................... Good credit quality. Issues assigned this rating have a
                                             satisfactory degree of assurance for timely payments, but
                                             the margin of safety is not as great as the F-1+ and F-1
                                             ratings.
</TABLE>

DUFF & PHELPS INC.

<TABLE>
                <S>                          <C>
                BOND RATING                  EXPLANATION
                -----------------------------------------------------------------------------------------
                Duff 1+..................... Highest certainty of timely payment. Short-term liquidity,
                                             including internal operating factors and/or ready access to
                                             alternative sources of funds, is clearly outstanding, and
                                             safety is just below risk-free U.S. Treasury short-term
                                             obligations.
                Duff 1...................... Very high certainty of timely payment. Liquidity factors are
                                             excellent and supported by good fundamental protection
                                             factors. Risk factors are minor.
                Duff 1-..................... High certainty of timely payment. Liquidity factors are
                                             strong and supported by good fundamental protection factors.
                                             Risk factors are very small.
                Duff 2...................... Good certainty of timely payment. Liquidity factors and
                                             company fundamentals are sound. Although ongoing funding
                                             needs may enlarge total financing requirements, access to
                                             capital markets is good. Risk factors are small.
</TABLE>

THOMSON BANKWATCH, INC.

<TABLE>
                <S>                          <C>
                BOND RATING                  EXPLANATION
                -----------------------------------------------------------------------------------------
                TBW-1....................... The highest category; indicates a very high degree of
                                             likelihood that principal and interest will be paid on a
                                             timely basis.
                TBW-2....................... The second highest category; while the degree of safety
                                             regarding timely repayment of principal and interest is
                                             strong, the relative degree of safety is not as high as for
                                             issues rated TBW-1.
                TBW-3....................... The lowest investment grade category; indicates that while
                                             more susceptible to adverse developments (both internal and
                                             external) than obligations with higher ratings, capacity to
                                             service principal and interest in a timely fashion is
                                             considered adequate.
                TBW-4....................... The lowest rating category; this rating is regarded as
                                             non-investment grade and therefore speculative.
</TABLE>

30
<PAGE>

IBCA, INC.

<TABLE>
                <S>                          <C>
                BOND RATING                  EXPLANATION
                -----------------------------------------------------------------------------------------
                A1+......................... Obligations supported by the highest capacity for timely
                                             repayment. Where issues possess a particularly strong credit
                                             feature, a rating of A1+ is assigned.
                A2.......................... Obligations supported by a good capacity for timely
                                             repayment.
                A3.......................... Obligations supported by a satisfactory capacity for timely
                                             repayment.
                B........................... Obligations for which there is an uncertainty as to the
                                             capacity to ensure timely repayment.
                C........................... Obligations for which there is a high risk of default or
                                             which are currently in default.
</TABLE>

                                                                              31
<PAGE>
Appendix B

DESCRIPTION OF MUNICIPAL SECURITIES

          MUNICIPAL NOTES generally are used to provide for short-term capital
          needs and usually have maturities of one year or less. They include
          the following:

          1. Project Notes, which carry a U.S. government guarantee, are issued
          by public bodies (called "local issuing agencies") created under the
          laws of a state, territory, or U.S. possession. They have maturities
          that range up to one year from the date of issuance. Project Notes are
          backed by an agreement between the local issuing agency and the
          Federal Department of Housing and Urban Development. These Notes
          provide financing for a wide range of financial assistance programs
          for housing, redevelopment, and related needs (such as low-income
          housing programs and renewal programs).

          2. Tax Anticipation Notes are issued to finance working capital needs
          of municipalities. Generally, they are issued in anticipation of
          various seasonal tax revenues, such as income, sales, use and business
          taxes, and are payable from these specific future taxes.

          3. Revenue Anticipation Notes are issued in expectation of receipt of
          other types of revenues, such as Federal revenues available under the
          Federal Revenue Sharing Programs.

          4. Bond Anticipation Notes are issued to provide interim financing
          until long-term financing can be arranged. In most cases, the
          long-term bonds then provide the money for the repayment of the Notes.

          5. Construction Loan Notes are sold to provide construction financing.
          After successful completion and acceptance, many projects receive
          permanent financing through the Federal Housing Administration under
          the Federal National Mortgage Association ("Fannie Mae") or the
          Government National Mortgage Association ("Ginnie Mae").

          6. Tax-Exempt Commercial Paper is a short-term obligation with a
          stated maturity of 365 days or less. It is issued by agencies of state
          and local governments to finance seasonal working capital needs or as
          short-term financing in anticipation of longer term financing.

          MUNICIPAL BONDS, which meet longer term capital needs and generally
          have maturities of more than one year when issued, have three
          principal classifications:

          1. General Obligation Bonds are issued by such entities as states,
          counties, cities, towns, and regional districts. The proceeds of these
          obligations are used to fund a wide range of public projects,
          including construction or improvement of schools, highways and roads,
          and water and sewer systems. The basic security behind General
          Obligation Bonds is the issuer's pledge of its full faith and credit
          and taxing power for the payment of principal and interest. The taxes
          that can be levied for the payment of debt service may be limited or
          unlimited as to the rate or amount of special assessments.

          2. Revenue Bonds in recent years have come to include an  increasingly
          wide variety of types of municipal obligations. As with other kinds of
          municipal  obligations,  the  issuers of revenue  bonds may consist of
          virtually any form of state or local  governmental  entity,  including
          states,  state  agencies,  cities,  counties,  authorities  of various
          kinds,  such as  public  housing  or  redevelopment  authorities,  and
          special  districts,  such  as  water,  sewer  or  sanitary  districts.
          Generally,  revenue  bonds are secured by the revenues or net revenues
          derived from a particular facility,  group of facilities,  or, in some
          cases,  the  proceeds of a special  excise or other  specific  revenue
          source.  Revenue bonds are issued to finance a wide variety of capital
          projects including electric,  gas, water and sewer systems;  highways,
          bridges,  and  tunnels;  port and  airport  facilities;  colleges  and
          universities;  and hospitals.  Many of these bonds provide  additional
          security in the form of a debt service reserve fund to be used to make
          principal and interest payments.  Various forms of credit enhancement,
          such as a bank letter of credit or municipal bond insurance,  may also
          be employed in revenue bond issues.  Housing  authorities  have a wide
          range of security,  including  partially or fully  insured  mortgages,
          rent  subsidized  and/or  collateralized  mortgages,  and/or  the  net
          revenues from housing or other

32
<PAGE>
          public projects. Some authorities provide further security in the form
          of a state's ability  (without  obligation) to make up deficiencies in
          the debt service reserve fund.

          In recent years, revenue bonds have been issued in large volumes for
          projects that are privately owned and operated (see 3 below).

          3. Private Activity Bonds are considered municipal bonds if the
          interest paid thereon is exempt from Federal income tax and are issued
          by or on behalf of public authorities to raise money to finance
          various privately operated facilities for business and manufacturing,
          housing and health. These bonds are also used to finance public
          facilities such as airports, mass transit systems and ports. The
          payment of the principal and interest on such bonds is dependent
          solely on the ability of the facility's user to meet its financial
          obligations and the pledge, if any, of real and personal property as
          security for such payment.

          While, at one time, the pertinent provisions of the Internal Revenue
          Code permitted private activity bonds to bear tax-exempt interest in
          connection with virtually any type of commercial or industrial project
          (subject to various restrictions as to authorized costs, size
          limitations, state per capita volume restrictions, and other matters),
          the types of qualifying projects under the Code have become
          increasingly limited, particularly since the enactment of the Tax
          Reform Act of 1986. Under current provisions of the Code, tax-exempt
          financing remains available, under prescribed conditions, for certain
          privately owned and operated rental multi-family housing facilities,
          nonprofit hospital and nursing home projects, airports, docks and
          wharves, mass commuting facilities and solid waste disposal projects,
          among others, and for the refunding (that is, the tax-exempt
          refinancing) of various kinds of other private commercial projects
          originally financed with tax-exempt bonds. In future years, the types
          of projects qualifying under the Code for tax-exempt financing are
          expected to become increasingly limited.

          Because of terminology formerly used in the Internal Revenue Code,
          virtually any form of private activity bond may still be referred to
          as an "industrial development bond," but more and more frequently
          revenue bonds have become classified according to the particular type
          of facility being financed, such as hospital revenue bonds, nursing
          home revenue bonds, multi-family housing revenues bonds, single family
          housing revenue bonds, industrial development revenue bonds, solid
          waste resource recovery revenue bonds, and so on.

          OTHER MUNICIPAL OBLIGATIONS, incurred for a variety of financing
          purposes, include: municipal leases, which may take the form of a
          lease or an installment purchase or conditional sale contract, are
          issued by state and local governments and authorities to acquire a
          wide variety of equipment and facilities such as fire and sanitation
          vehicles, telecommunications equipment and other capital assets.
          Municipal leases frequently have special risks not normally associated
          with general obligation or revenue bonds. Leases and installment
          purchase or conditional sale contracts (which normally provide for
          title to the leased asset to pass eventually to the government issuer)
          have evolved as a means for governmental issuers to acquire property
          and equipment without meeting the constitutional and statutory
          requirements for the issuance of debt. The debt-issuance limitations
          of many state constitutions and statutes are deemed to be inapplicable
          because of the inclusion in many leases or contracts of
          "non-appropriation" clauses that provide that the governmental issuer
          has no obligation to make future payments under the lease or contract
          unless money is appropriated for such purpose by the appropriate
          legislative body on a yearly or other periodic basis. To reduce this
          risk, the Fund will only purchase municipal leases subject to a
          non-appropriation clause when the payment of principal and accrued
          interest is backed by an unconditional irrevocable letter of credit,
          or guarantee of a bank or other entity that meets the criteria
          described in the Prospectus.

                                                                              33
<PAGE>

          Tax-exempt bonds are also categorized according to whether the
          interest is or is not includible in the calculation of alternative
          minimum taxes imposed on individuals, according to whether the costs
          of acquiring or carrying the bonds are or are not deductible in part
          by banks and other financial institutions, and according to other
          criteria relevant for Federal income tax purposes. Due to the
          increasing complexity of Internal Revenue Code and related
          requirements governing the issuance of tax-exempt bonds, industry
          practice has uniformly required, as a condition to the issuance of
          such bonds, but particularly for revenue bonds, an opinion of
          nationally recognized bond counsel as to the tax-exempt status of
          interest on the bonds.

34
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<PAGE>

        LOGO

            1-800-29JANUS
            100 Fillmore Street
            Denver, Colorado 80206-4928
            janus.com





<PAGE>
                               JANUS ASPEN SERIES

                           PART C - OTHER INFORMATION
ITEM 23  Exhibits

         Exhibit 1  (a)       Trust   Instrument   dated   May  19,   1993,   is
                              incorporated  herein by reference to  Registrant's
                              Registration Statement on Form N-1A filed with the
                              Securities  and  Exchange  Commission  on May  20,
                              1993.

                    (b)       Amendments to Trust  Instrument  are  incorporated
                              herein   by   reference   to   Exhibit   1(b)   to
                              Post-Effective  Amendment No. 7, filed on February
                              14, 1996.

                    (c)       Amendment to Trust  Instrument  dated December 10,
                              1996  is  incorporated   herein  by  reference  to
                              Exhibit 1(c) to  Post-Effective  Amendment No. 10,
                              filed on February 13, 1997.

                    (d)       Amendment to Trust  Instrument dated September 14,
                              1999 is filed  herein as  Exhibit  1(d).

         Exhibit 2  (a)       Restated   Bylaws  are   incorporated   herein  by
                              reference  to  Exhibit   2(a)  to   Post-Effective
                              Amendment No. 7, filed on February 14, 1996.

                    (b)       First  Amendment  to the  Bylaws  is  incorporated
                              herein   by   reference   to   Exhibit   2(b)   to
                              Post-Effective  Amendment No. 7, filed on February
                              14, 1996.

         Exhibit 3            Not Applicable

         Exhibit 4  (a)       Investment    Advisory    Agreement   for   Growth
                              Portfolio,  Aggressive Growth Portfolio, Worldwide
                              Growth  Portfolio,  Balanced  Portfolio,  Flexible
                              Income  Portfolio and Short-Term Bond Portfolio is
                              incorporated  herein by  reference to Exhibit 5(a)
                              to  Post-Effective  Amendment  No.  15,  filed  on
                              February 27, 1998.

                    (b)       Investment  Advisory  Agreement for  International
                              Growth   Portfolio  is   incorporated   herein  by
                              reference  to  Exhibit   5(b)  to   Post-Effective
                              Amendment No. 15, filed on February 27, 1998.

                    (c)       Investment  Advisory  Agreement  for Money  Market
                              Portfolio is  incorporated  herein by reference to
                              Exhibit 5(c)


<PAGE>

                              to  Post-Effective  Amendment No. 15,
                              filed on February 27, 1998.

                    (d)       Investment   Advisory   Agreement  for  High-Yield
                              Portfolio is  incorporated  herein by reference to
                              Exhibit 5(d) to  Post-Effective  Amendment No. 15,
                              filed on February 27, 1998.

                    (e)       Investment  Advisory  Agreement  for Equity Income
                              Portfolio is  incorporated  herein by reference to
                              Exhibit 5(e) to  Post-Effective  Amendment No. 15,
                              filed on February 27, 1998.

                    (f)       Investment    Advisory   Agreement   for   Capital
                              Appreciation  Portfolio is incorporated  herein by
                              reference  to  Exhibit   5(f)  to   Post-Effective
                              Amendment No. 15, filed on February 27, 1998.

                    (g)       Form of Investment  Advisory  Agreement for Growth
                              and Income  Portfolio  is  incorporated  herein by
                              reference  to  Exhibit   5(g)  to   Post-Effective
                              Amendment No. 12, filed on August 11, 1997.

         Exhibit 5  (a)       Distribution  Agreement for  Retirement  Shares is
                              incorporated  herein by  reference to Exhibit 6(a)
                              to  Post-Effective  Amendment  No.  10,  filed  on
                              February 13, 1997.

                    (b)       Form  of  Distribution  and  Shareholder  Services
                              Agreement for  Retirement  Shares is  incorporated
                              herein by  reference to  Post-Effective  Amendment
                              No. 11, filed on April 30, 1997.

                    (c)       Amended  Distribution  Agreement  is  incorporated
                              herein  by  reference  to  PEA  No.  17  filed  on
                              February 26, 1999.

                    (d)       Amended Distribution Agreement dated September 14,
                              1999 is filed herein as Exhibit 5(d).

                    (e)       Form  of  Distribution  and  Shareholder  Services
                              Agreement for Service  Shares for Qualified  Plans
                              is filed herein as Exhibit 5(e)

                    (f)       Form  of  Distribution  and  Shareholder  Services
                              Agreement   for  Service   Shares  for   Insurance
                              Companies is filed herein as Exhibit 5(f)

          Exhibit 6           Not Applicable


<PAGE>

          Exhibit 7 (a)       Form of  Custody  Agreement  between  Janus  Aspen
                              Series and  Investors  Fiduciary  Trust Company is
                              incorporated  herein by  reference to Exhibit 8(a)
                              to Post-Effective Amendment No. 11, filed on April
                              30, 1997.

                   (b)        Form of  Custodian  Contract  between  Janus Aspen
                              Series and State Street Bank and Trust  Company is
                              incorporated  herein by  reference to Exhibit 8(b)
                              to Post-Effective Amendment No. 11, filed on April
                              30, 1997.

                    (c)       Letter  Agreement  dated  April 4, 1994  regarding
                              State Street  Custodian  Agreement is incorporated
                              herein   by   reference   to   Exhibit   8(c)   to
                              Post-Effective  Amendment  No. 11,  filed on April
                              30, 1997.

                    (d)       Form of Custodian  Agreement  between  Janus Aspen
                              Series  and  United   Missouri   Bank,   N.A.   is
                              incorporated  herein by  reference to Exhibit 8(d)
                              to Post-Effective Amendment No. 11, filed on April
                              30, 1997.

                    (e)       Amendment  dated  October 11, 1995 of State Street
                              Custodian  Contract  is  incorporated   herein  by
                              reference  to  Exhibit   8(e)  to   Post-Effective
                              Amendment No. 7, filed on February 14, 1996.

                    (f)       Letter   Agreement   dated   September   10,  1996
                              regarding  State Street  Custodian is incorporated
                              herein   by   reference   to   Exhibit   8(f)   to
                              Post-Effective  Amendment  No. 9, filed on October
                              24, 1996.

                    (g)       Form  of  Subcustodian   Contract  between  United
                              Missouri  Bank,  N.A.  and State  Street  Bank and
                              Trust Company is incorporated  herein by reference
                              to Exhibit 8(g) to Post-Effective Amendment No. 9,
                              filed on October 24, 1996.

                    (h)       Form of Letter  Agreement dated September 9, 1997,
                              regarding  State  Street  Custodian   Contract  is
                              incorporated  herein by  reference to Exhibit 8(h)
                              to  Post-Effective  Amendment  No.  14,  filed  on
                              October 24, 1997.

                    (i)       Form of Global Custody  Services  Agreement  dated
                              March 11, 1999 with Citibank N.A. is  incorporated
                              herein by reference to Exhibit 7 to Post-Effective
                              Amendment No. 19, filed on April 30, 1999.

<PAGE>

     Exhibit 8      (a)       Transfer  Agency   Agreement  with  Janus  Service
                              Corporation is incorporated herein by reference to
                              Exhibit 9(a) to  Post-Effective  Amendment No. 11,
                              filed on April 30, 1997.

                    (b)       Transfer  Agency  Agreement as amended May 1, 1997
                              is  incorporated  herein by  reference  to Exhibit
                              9(b) to Post-Effective  Amendment No. 10, filed on
                              February 13, 1997.

                    (c)       Form   of   Model   Participation   Agreement   is
                              incorporated  herein by  reference to Exhibit 9(c)
                              to Post-Effective Amendment No. 11, filed on April
                              30, 1997.

     Exhibit 9      (a)       Opinion and Consent of Fund  Counsel  with respect
                              to shares of Growth  Portfolio,  Aggressive Growth
                              Portfolio,  Worldwide Growth  Portfolio,  Balanced
                              Portfolio,    Flexible   Income    Portfolio   and
                              Short-Term Bond Portfolio is  incorporated  herein
                              by  reference  to  Exhibit  10  to  Post-Effective
                              Amendment No. 11, filed on April 30, 1997.

                    (b)       Opinion and Consent of Fund  Counsel  with respect
                              to shares of  International  Growth  Portfolio  is
                              incorporated  herein by reference to Exhibit 10(b)
                              to Post-Effective Amendment No. 11, filed on April
                              30, 1997.

                    (c)       Opinion and Consent of Fund  Counsel  with respect
                              to   shares   of   Money   Market   Portfolio   is
                              incorporated  herein by reference to Exhibit 10(c)
                              to Post-Effective Amendment No. 11, filed on April
                              30, 1997.

                    (d)       Opinion and Consent of Fund  Counsel  with respect
                              to High-Yield  Portfolio is incorporated herein by
                              reference  to  Exhibit  10(d)  to   Post-Effective
                              Amendment No. 7, filed on February 14, 1996.

                    (e)       Opinion and Consent of Fund  Counsel  with respect
                              to   Equity    Income    Portfolio   and   Capital
                              Appreciation  Portfolio is incorporated  herein by
                              reference  to  Exhibit  10(e)  to   Post-Effective
                              Amendment No. 10, filed on February 13, 1997.

                    (f)       Opinion and Consent of Fund  Counsel  with respect
                              to the Retirement  Shares of all the Portfolios is
                              incorporated  herein by reference to Exhibit 10(f)
                              to  Post-Effective  Amendment  No.  10,  filed  on
                              February 13, 1997.

<PAGE>

                    (g)       Opinion and Consent of Fund  Counsel  with respect
                              to Growth and  Income  Portfolio  is  incorporated
                              herein   by   reference   to   Exhibit   10(g)  to
                              Post-Effective  Amendment  No. 12, filed on August
                              11, 1997.

                    (h)       Opinion and Consent of Fund  Counsel  with respect
                              to   Retirement   Shares  of  Growth   and  Income
                              Portfolio  isincorporated  herein by  reference to
                              Exhibit 10(h) to Post-Effective  Amendment No. 12,
                              filed on August 11, 1997.

                    (i)       Opinion and Consent of Fund  Counsel  with respect
                              to Service  Shares of all the  Portfolios is filed
                              herein as Exhibit 9(i)

         Exhibit 10           Consent  of  PricewaterhouseCoopers  LLP is  filed
                              herein as Exhibit 10.

         Exhibit 11           Not Applicable

         Exhibit 12           Not Applicable

         Exhibit 13 (a)       Form of  Distribution  and  Shareholder  Servicing
                              Plan  for  Retirement  Shares  dated  May 1,  1997
                              between Janus  Distributors,  Inc. and Janus Aspen
                              Series  is  incorporated  herein by  reference  to
                              Exhibit  15 to  Post-Effective  Amendment  No. 10,
                              filed on February 13, 1997.

                    (b)       Form of  Distribution  and  Shareholder  Servicing
                              Plan for Service  Shares dated  September 14, 1999
                              between Janus  Distributors,  Inc. and Janus Aspen
                              Series is filed herein as Exhibit 13(b).

         Exhibit 14           Not Applicable

         Exhibit 15 (a)       Rule  18f-3  Plan  dated   December  10,  1996  is
                              incorporated  herein by reference to Exhibit 18 to
                              Post-Effective Amendment No. 10, filed on February
                              13, 1997.

                    (b)       Rule  18f-3  Plan  dated  June  15,  1999 is filed
                              incorporated  herein by reference to Exhibit 15 to
                              Post-Effective Amendment No. 19, filed on June 21,
                              1999.

                    (c)       Rule 18f-3 Plan dated  September 14, 1999 is filed
                              herein as Exhibit 15(c).

<PAGE>

ITEM 24. Persons Controlled by or Under Common Control with Registrant

         None

ITEM 25. Indemnification

     Article  IX  of  Janus  Aspen   Series'  Trust   Instrument   provides  for
indemnification  of  certain  persons  acting on behalf  of the  Portfolios.  In
general, Trustees and officers will be indemnified against liability and against
all  expenses  of  litigation  incurred  by them in  connection  with any claim,
action,  suit or  proceeding  (or  settlement  of the same) in which they become
involved by virtue of their office in  connection  with the  Portfolios,  unless
their conduct is determined to constitute willful misfeasance,  bad faith, gross
negligence  or  reckless  disregard  of  their  duties,  or  unless  it has been
determined that they have not acted in good faith in the reasonable  belief that
their actions were in the best interests of the Portfolios. A determination that
a  person   covered  by  the   indemnification   provisions   is   entitled   to
indemnification  may be made  by the  court  or  other  body  before  which  the
proceeding is brought, or by either a vote of a majority of a quorum of Trustees
who are neither "interested  persons" of the Trust nor parties to the proceeding
or by an independent legal counsel in a written opinion. The Portfolios also may
advance  money  for  these  expenses,  provided  that  the  Trustee  or  officer
undertakes  to repay  the  Portfolios  if his  conduct  is later  determined  to
preclude   indemnification,   and  that  either  he  provide  security  for  the
undertaking,  the Trust be insured against losses resulting from lawful advances
or a majority of a quorum of disinterested Trustees, or independent counsel in a
written  opinion,  determines that he ultimately will be found to be entitled to
indemnification.  The Trust also maintains a liability insurance policy covering
its Trustees and officers.

ITEM 26. Business and Other Connections of Investment Adviser

     The  only  business  of  Janus  Capital  Corporation  is to  serve  as  the
investment  adviser of the Registrant and as investment adviser or subadviser to
several other mutual funds, and for individual,  charitable,  corporate, private
and  retirement  accounts.  Business  backgrounds  of  the  principal  executive
officers  and  directors  of the  adviser  that  also  hold  positions  with the
Registrant are included under "Officers and Trustees" in the currently effective
Statements of Additional Information of the Registrant.  The remaining principal
executive  officers  of the  investment  adviser  and their  positions  with the
adviser and affiliated  entities are: Mark B. Whiston,  Vice President and Chief
Marketing Officer of Janus Capital Corporation,  Director and President of Janus
Capital International Ltd., Director of Janus World Funds Plc; Marjorie G. Hurd,
Vice  President  and Chief  Operations  Officer  of Janus  Capital  Corporation,
Director  and  President of Janus  Service  Corporation;  Thomas A. Early,  Vice
President,  General  Counsel and  Secretary of Janus Capital  Corporation,  Vice
President and General Counsel of Janus Service Corporation,  Janus Distributors,
Inc. and Janus Capital  International,  Ltd., Director of Janus World Funds Plc,
and Stephen L. Stieneker,  Assistant General Counsel,  Chief Compliance  Officer
and Vice  President of Compliance of Janus Capital  Corporation.  Mr. Michael E.
Herman,  a director  of Janus  Capital  Corporation,  is Chairman of the Finance
Committee  (1990 to  present) of Ewing  Marion  Kauffman  Foundation,  4900 Oak,
Kansas City, Missouri 64112. Mr. Michael N. Stolper, a director of Janus Capital
Corporation,  is President  of Stolper & Company,

<PAGE>

Inc., 525 "B" Street,  Suite 1080, San Diego,  California  92101,  an investment
performance  consultant.  Mr. Thomas A.  McDonnell,  a director of Janus Capital
Corporation,  is  President,  Chief  Executive  Officer  and a  Director  of DST
Systems,  Inc., 333 West 11th Street,  5th Floor,  Kansas City,  Missouri 64105,
provider of data processing and recordkeeping services for various mutual funds,
and  is  Executive  Vice  President  and a  director  of  Kansas  City  Southern
Industries,  Inc., 114 W. 11th Street,  Kansas City,  Missouri 64105, a publicly
traded holding company whose primary  subsidiaries are engaged in transportation
and  financial  services.  Mr.  Landon H.  Rowland,  a director of Janus Capital
Corporation,  is President and Chief  Executive  Officer of Kansas City Southern
Industries, Inc.

ITEM 27.  Principal Underwriters

          (a)  Janus  Distributors,   Inc.  ("Janus   Distributors")  serves  as
               principal  underwriter  for the Registrant  and Janus  Investment
               Fund.

          (b)  The principal business address, positions with Janus Distributors
               and positions with  Registrant of Thomas A. Early,  Kelley Abbott
               Howes and Steven R.  Goodbarn,  officers  and  directors of Janus
               Distributors,  are described under "Officers and Trustees" in the
               Statement of Additional Information included in this Registration
               Statement.  The remaining  principal  executive  officer of Janus
               Distributors is Margie G. Hurd, Director and President.  Ms. Hurd
               does not hold any  positions  with  the  Registrant.  Ms.  Hurd's
               principal  business  address  is  100  Fillmore  Street,  Denver,
               Colorado 80206-4928.

          (c)  Not Applicable.

ITEM 28. Location of Accounts and Records

         The accounts,  books and other  documents  required to be maintained by
Section 31(a) of the  Investment  Company Act of 1940 and the rules  promulgated
thereunder  are  maintained  by Janus  Capital  Corporation  and  Janus  Service
Corporation,  both of which are located at 100 Fillmore Street, Denver, Colorado
80206-4928  and by State Street Bank and Trust Company,  P.O. Box 0351,  Boston,
Massachusetts  02117-0351 and Citibank,  N.A., 111 Wall Street, 24th Floor, Zone
5, New York, NY 10043.

ITEM 29. Management Services

     The  Registrant  has no  management-related  service  contract which is not
discussed in Part A or Part B of this form.

ITEM 30. Undertakings

     Not applicable.


<PAGE>


                                             SIGNATURES

     Pursuant  to  the  requirements  of the  Securities  Act of  1933  and  the
Investment Company Act of 1940, the Registrant has duly caused this Amendment to
its  Registration  Statement  to be  signed on its  behalf  by the  undersigned,
thereto duly authorized,  in the City of Denver,  and State of Colorado,  on the
26th day of October, 1999.


                                        JANUS ASPEN SERIES


                                        By:  /s/ Thomas H. Bailey
                                             Thomas H. Bailey, President

     Janus Aspen  Series is  organized  under a Trust  Instrument  dated May 19,
1993. The  obligations  of the Registrant  hereunder are not binding upon any of
the  Trustees,  shareholders,  nominees,  officers,  agents or  employees of the
Registrant  personally,  but bind only the trust property of the Registrant,  as
provided  in the  Trust  Instrument.  The  execution  of this  Amendment  to the
Registration Statement has been authorized by the Trustees of the Registrant and
this  Amendment to the  Registration  Statement has been signed by an authorized
officer of the  Registrant,  acting as such, and neither such  authorization  by
such  Trustees nor such  execution by such officer  shall be deemed to have been
made by any of them  personally,  but shall bind only the trust  property of the
Registrant as provided in its Trust Instrument.

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

Signature                     Title                            Date

/s/ Thomas H. Bailey          President                        October 26, 1999
Thomas H. Bailey              (Principal Executive
                              Officer) and Trustee

/s/ Steven R. Goodbarn        Vice President and               October 26, 1999
Steven R. Goodbarn            Chief Financial Officer
                              (Principal Financial Officer)

/s/ Glenn P. O'Flaherty       Treasurer and Chief              October 26, 1999
Glenn P. O'Flaherty           Accounting Officer
                              (Principal Accounting Officer)


/s/ James P. Craig, III       Trustee                          October 26, 1999

<PAGE>
James P. Craig, III

Gary O. Loo*                  Trustee                          October 26, 1999
Gary O. Loo

Dennis B. Mullen*             Trustee                          October 26, 1999
Dennis B. Mullen

James T. Rothe*               Trustee                          October 26, 1999
James T. Rothe

William D. Stewart*           Trustee                          October 26, 1999
William D. Stewart

Martin H. Waldinger*          Trustee                          October 26, 1999
Martin H. Waldinger


/s/ Steven R. Goodbarn
*By  Steven R. Goodbarn
     Attorney-in-Fact


<PAGE>

                                INDEX OF EXHIBITS




          Exhibit Number                Exhibit Title

          Exhibit 1(d)                  Amendment to Trust Instrument dated
                                        September 14, 1999

          Exhibit 5(d)                  Amended and Restated Distribution
                                        Agreement

          Exhibit 5(e)                  Form  of Distribution and Shareholder
                                        Services Agreement for Service Shares
                                        for Qualified Plans

          Exhibit 5(f)                  Form of Distribution and Shareholder
                                        Services Agreement for Service Shares
                                        for Insurance Companies

          Exhibit 9(i)                  Opinion and Consent of Fund Counsel with
                                        respect to Service Shares

          Exhibit 10                    Consent of PricewaterhouseCoopers LLP

          Exhibit 13(b)                 Distribution and Shareholder Servicing
                                        Plan for the Service Shares of Janus
                                        Aspen Series

          Exhibit 15(c)                 Amended Rule 18f-3 Plan, dated September
                                        14, 1999





                                                                 EXHIBIT 1(d)

                   SEVENTH AMENDMENT DATED SEPTMEBER 14, 1999

            TO JANUS ASPEN SERIES TRUST INSTRUMENT DATED MAY 19, 1993

     Pursuant  to  authority  granted by the  Trustees,  Schedule A of the Trust
Instrument  is amended as follows to reflect the addition of the Service  Shares
as a class of Janus Aspen Series:

                                   SCHEDULE A

          Series of the Trust                          Available Classes

          Aggressive Growth Portfolio                  Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          Balanced Portfolio                           Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          Capital Appreciation Portfolio               Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          Equity Income Portfolio                      Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          Flexible Income Portfolio                    Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          Growth Portfolio                             Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          Growth and Income Portfolio                  Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          High-Yield Portfolio                         Institutional Shares
                                                       Retirement Shares
                                                       Service Shares


<PAGE>




          International Growth Portfolio               Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          Money Market Portfolio                       Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

          Worldwide Growth Portfolio                   Institutional Shares
                                                       Retirement Shares
                                                       Service Shares

[SEAL]





                                                                 EXHIBIT 5(d)

                              AMENDED AND RESTATED
                             DISTRIBUTION AGREEMENT


     THIS AMENDED AND RESTATED DISTRIBUTION  AGREEMENT (the "Agreement") is made
as of the 14th day of September,  1999,  by and between  Janus Aspen  Series,  a
business  trust  organized and existing under the laws of the State of Delaware,
(hereinafter  called "JAS") on behalf of the  Institutional  Shares,  Retirement
Shares and Service  Shares of each of its  portfolios,  whether now  existing or
hereafter  created  (each  a  "Portfolio"),  and  Janus  Distributors,  Inc.,  a
corporation  organized  and  existing  under the laws of the  State of  Colorado
(hereinafter  called the "Distributor" or "JDI").  This Agreement applies to the
Institutional  Shares,  Retirement  Shares,  and Service Shares  (together,  the
"Shares") of each Portfolio of JAS, whether now existing or hereafter created.

                                   WITNESSETH:

     WHEREAS,  JAS is engaged in business as an open-end  management  investment
company  registered  under the  Investment  Company Act of 1940, as amended (the
"1940 Act"); and

     WHEREAS,  the  Distributor  is  registered  as a  broker-dealer  under  the
Securities  Exchange  Act of 1934,  as amended  (the "1934 Act") and the laws of
each state or jurisdiction  in which the Distributor  engages in business to the
extent  such  law  requires,  and is a member  of the  National  Association  of
Securities  Dealers,  Inc. (the "NASD"),  (such registrations and membership are
referred to collectively as the "Registrations"); and

     WHEREAS,  JAS and JDI are parties to a Distribution  Agreement  dated as of
May 1,  1997,  as amended  on  September  14,  1998,  under  which JDI serves as
Distributor to Institutional  Shares and Retirement  Shares, and the parties now
wish to amend such  agreement to also make JDI  Distributor of Service Shares as
set forth below; and

     WHEREAS, JAS has adopted on behalf of each of the Retirement Shares and the
Service Shares of each Portfolio a Distribution  and Shareholder  Servicing Plan
pursuant to Rule 12b-1 under the 1940 Act; and

     WHEREAS,  JAS desires the  Distributor  to act as the  underwriter  for the
public offering of the Shares of each Portfolio;

     NOW,  THEREFORE,  in  consideration of the premises and the mutual promises
hereinafter set forth, the parties hereto agree as follows:


                                       1
<PAGE>

     1.   Appointment.  JAS appoints JDI to act as distributor of the Shares.

     2.   Delivery of Portfolio  Documents.  JAS has furnished the  Distributor
with  properly  certified or  authenticated  copies of each of the  following in
effect on the date hereof and shall  furnish the  Distributor  from time to time
properly  certified or  authenticated  copies of all  amendments or  supplements
thereto:

     (a)  Trust Instrument;

     (b)  Bylaws; and

     (c)  Resolutions   of  the  Trustees   (hereinafter   referred  to  as  the
          "Trustees")  selecting the  Distributor as  distributor  and approving
          this form of agreement and authorizing its execution.

     JAS shall furnish the Distributor  promptly with copies of any registration
statements  filed by it with the Securities and Exchange  Commission (the "SEC")
under the Securities Act of 1933, as amended,  (the "1933 Act") or the 1940 Act,
together with any financial  statements and exhibits included  therein,  and all
amendments or supplements thereto hereafter filed.

     JAS shall also  furnish the  Distributor  with such other  certificates  or
documents  as the  Distributor  may  from  time  to  time,  in  its  discretion,
reasonably deem necessary or appropriate in order to properly perform its duties
under this Agreement.

     3.   Solicitation of Orders for Purchase of Shares.

     (a)  Subject to the  provisions of  Paragraphs 4 and 7 hereof,  and to such
minimum  purchase  requirements  as may from  time to time be  indicated  in the
Prospectus  or  Statement  of  Additional  Information  of the  Shares  of  each
Portfolio,  the Distributor is authorized to solicit, as agent on behalf of JAS,
unconditional  orders for purchases of each  Portfolio's  Shares  authorized for
issuance and registered under the 1933 Act, provided that:

     (1)  The Distributor shall act solely as a disclosed agent on behalf of and
          for the account of JAS;

     (2)  The  Distributor  shall confirm or arrange with the transfer agent for
          the Shares to confirm all purchases of the Shares.  Such  confirmation
          shall  conform to the  requirements  of Rule 10b-10 under the 1934 Act
          and shall clearly state that the Distributor is acting as agent in the
          transaction;

     (3)  The  Distributor  shall have no liability for payment for purchases of
          Shares it sells as agent;

                                       2
<PAGE>

     (4)  Each  order  to  purchase  Shares  of  a  Portfolio  received  by  the
          Distributor  shall be subject to  acceptance  by an officer of JAS and
          entry of the order on such Portfolio's records or shareholder accounts
          and is not binding until so accepted and entered; and

     (5)  With  respect to the  Retirement  Shares and the Service  Shares,  the
          Distributor  may appoint  sub-agents  or  distribute  through  dealers
          (pursuant to the  Distribution  and  Shareholder  Servicing  Agreement
          applicable  to that  Class,  forms of which  are  attached  hereto  as
          Exhibits  A and B), the  Distributor's  own sales  representatives  or
          otherwise as the Distributor may determine from time to time.

     The  purchase  price of a  Portfolio's  Shares to the  public  shall be the
public offering price described in Paragraph 6 hereof.

     (b)  In consideration  of the rights granted to the Distributor  under this
Agreement,  the  Distributor  will use its best  efforts (but only in states and
jurisdictions  in which the  Distributor  may  lawfully  do so) to solicit  from
investors  unconditional orders to purchase Shares of each Portfolio.  JAS shall
make available to the Distributor  without cost to the Distributor the currently
effective  Prospectus and Statement of Additional  Information for the Shares of
each Portfolio and all information,  financial  statements and other papers that
the Distributor  requires for use in connection with the distribution of Shares.
JAS shall provide such  materials in the form of camera ready  copies,  computer
diskettes,  or  other  form  reasonably  requested  by  Distributor,  to  enable
Distributor  to provide one copy or diskette to each  shareholder  of record (it
being  understood  that the  shareholders  of record  shall be  responsible  for
providing  copies of such materials to the beneficial  owners in accordance with
applicable law).

     4.   Solicitation  of Orders to Purchase  Shares by  Portfolio.  The rights
granted to the Distributor shall be non-exclusive in that JAS reserves the right
to otherwise solicit  purchases from, and sell Shares to,  investors,  including
without  limitation  the right to issue Shares in connection  with the merger or
consolidation of any other investment company, trust or personal holding company
with a Portfolio, or a Portfolio's acquisition, by the purchase or otherwise, of
all or  substantially  all of the  assets  of an  investment  company,  trust or
personal holding  company,  or  substantially  all of the outstanding  shares or
interests of any such entity.

     5.   Compensation and Expenses.  JAS shall pay all charges of its transfer,
shareholder  recordkeeping,  dividend  disbursing and redemption agents, if any;
all expenses of preparation, printing and mailing of confirmations; all expenses
of  preparation  and  printing  of annual  or more  frequent  revisions  of each
Portfolio's  Prospectus and Statement of Additional Information and of supplying
copies thereof to shareholders;  all expenses of registering and maintaining the
Registrations  of JAS under the 1940 Act and the sale of JAS's  Shares under the
1933 Act; all expenses of  qualifying  and  maintaining  qualifications  of each
Portfolio and of the Shares for sale under  securities laws of various states or
other  jurisdictions  and of registration  and  qualification

                                       3
<PAGE>

of each Portfolio under all laws  applicable to JAS or its business  activities.
The Distributor  may receive from JAS any amounts  authorized for payment to the
Distributor  out of the  Distribution  and  Shareholder  Servicing  Plan for the
Retirement Shares and the Service Shares. The Distributor may use such payments,
in its discretion, to compensate dealers,  insurance companies or other entities
who  provide  distribution-related  services  to  the  extent  permitted  by the
Distribution Plan.

     6.   Public Offering Price. All  solicitations by the Distributor  pursuant
to this Agreement  shall be for orders to purchase  Shares of a Portfolio at the
public offering price. The public offering price for each accepted  subscription
for a Portfolio's  Shares will be the net asset value per share next  determined
by JAS after it accepts such subscription.  The net asset value per share of the
Shares shall be determined in the manner  provided in JAS's Trust  Instrument as
now in effect or as it may be  amended,  and as  reflected  in the then  current
Prospectus and Statement of Additional Information covering the Shares.

     7.   Suspension  of  Sales.  If  and  whenever  the   determination   of  a
Portfolio's   net  asset  value  is  suspended  and  until  such  suspension  is
terminated,  no further  orders for Shares  shall be accepted by JAS except such
unconditional  orders placed with JAS and accepted by it before the  suspension.
In addition,  JAS  reserves the right to suspend  sales of Shares of a Portfolio
if, in the judgment of the Trustees, it is in the best interest of the Portfolio
to do so, such  suspension  to continue for such period as may be  determined by
the Trustees;  and in that event,  (i) at the direction of JAS, the  Distributor
shall suspend its  solicitation  of orders to purchase  Shares of such Portfolio
until otherwise  instructed by JAS and (ii) no orders to purchase Shares of such
Portfolio  shall be  accepted  by JAS while  such  suspension  remains in effect
unless otherwise directed by its Trustees.

     8.   Authorized  Representations.  The Distributor is not authorized by JAS
to  give  on  behalf  of  any   Portfolio  any   information   or  to  make  any
representations in connection with the sale of Shares other than the information
and representations  contained in such Portfolio's  registration statement filed
with the SEC under the 1933 Act and/or the 1940 Act,  covering  Shares,  as such
registration statement or such Portfolio's Prospectus or Statement of Additional
Information  may be amended or  supplemented  from time to time, or contained in
shareholder  reports or other  material  that may be prepared by or on behalf of
such Portfolio or approved by such Portfolio for the Distributor's use.

     9.   Registration  of Additional  Shares.  JAS hereby agrees to register an
indefinite number of Shares pursuant to Rule 24f-2 under the 1940 Act. JAS will,
in cooperation with the  Distributor,  take such action as may be necessary from
time to time to qualify the Shares of each Portfolio (so registered or otherwise
qualified  for sale under the 1933 Act), in any state or  jurisdiction  mutually
agreeable  to the  Distributor  and JAS,  and to  maintain  such  qualification;
provided,  however,  that  nothing  herein  shall be deemed to prevent  JAS from
registering the Shares without approval of the Distributor in any state it deems
appropriate.


                                       4

<PAGE>

     10.  Conformity With Law. The Distributor  agrees that in soliciting orders
to purchase Shares it shall duly conform in all respects with applicable federal
and state laws and with the rules and  regulations of the NASD. The  Distributor
will use its best efforts to maintain its  Registrations in good standing during
the term of this  Agreement  and will  promptly  notify  JAS in the event of the
suspension or termination of any of the Registrations.

     11.  Independent  Contractor.  The  Distributor  shall  be  an  independent
contractor  and neither the  Distributor,  nor any of its  officers,  directors,
employees,  or  representatives  is or  shall  be an  employee  of  JAS  in  the
performance of the  Distributor's  duties  hereunder.  The Distributor  shall be
responsible for its own conduct and the employment,  control, and conduct of its
agents and  employees  and for injury to such agents or  employees  or to others
through its agents and  employees  and agrees to pay or to insure  that  persons
other than JAS will pay all employee taxes due with respect to the activities of
its agents and employees.

     12.  Indemnification. The Distributor agrees to indemnify and hold harmless
JAS and each of the Trustees and its officers, employees and representatives and
each  person,  if any,  who controls JAS within the meaning of Section 15 of the
1933 Act against any and all losses,  liabilities,  damages, claims and expenses
(including the reasonable  costs of investigating or defending any alleged loss,
liability,  damage,  claim or expense and reasonable legal counsel fees incurred
in connection  therewith) to which JAS or such  Trustees,  officers,  employees,
representatives,  or controlling  person or persons may become subject under the
1933 Act, under any other statute,  at common law, or otherwise,  arising out of
the  acquisition  of any Shares of any  Portfolio by any person which (i) may be
based  upon any  wrongful  act by the  Distributor  or any of the  Distributor's
directors, officers, employees or representatives, or (ii) may be based upon any
untrue  statement or alleged untrue  statement of a material fact contained in a
registration  statement,   Prospectus,   Statement  of  Additional  Information,
shareholder report or other information  covering Shares of such Portfolio filed
or made  public by JAS or any  amendment  thereof or  supplement  thereto or the
omission or alleged  omission to state  therein a material  fact  required to be
stated therein or necessary to make the statements  therein not  misleading,  if
such  statement or omission was made in reliance upon  information  furnished to
such  Portfolio  by  the  Distributor  in  writing.   In  no  case  (i)  is  the
Distributor's indemnity in favor of JAS, or any person indemnified, to be deemed
to protect JAS or such indemnified  person against any liability to which JAS or
such person  would  otherwise be subject by reason of willful  misfeasance,  bad
faith, or gross  negligence in the performance of its or such person's duties or
by reason of its or such  person's  reckless  disregard of its or such  person's
obligations  and duties under this  Agreement,  or (ii) is the Distributor to be
liable under its indemnity agreement contained in this paragraph with respect to
any claim made against JAS or any person  indemnified unless JAS or such person,
as the case may be, shall have notified the  Distributor in writing of the claim
within a reasonable time after the summons, or other first written notification,
giving  information  of the  nature  of the claim  served  upon JAS or upon such
person (or after JAS or such person shall have  received  notice of such service
on any designated agent). However, failure to notify the Distributor of any such
claim shall not relieve the Distributor  from any liability that the Distributor
may have to JAS or any person against whom


                                       5

<PAGE>

such action is brought otherwise than on account of the Distributor's  indemnity
agreement contained in this Paragraph.

     The Distributor  shall be entitled to participate,  at its own expense,  in
the defense,  or, if  Distributor  so elects,  to assume the defense of any suit
brought to enforce any such claim but, if the  Distributor  elects to assume the
defense,  such  defense  shall be  conducted  by  legal  counsel  chosen  by the
Distributor and  satisfactory  to the persons  indemnified who are defendants in
the suit. In the event that the Distributor  elects to assume the defense of any
such suit and retain such legal counsel,  persons indemnified who are defendants
in the suit shall bear the fees and  expenses of any  additional  legal  counsel
retained by them. If the Distributor does not elect to assume the defense of any
such suit, the Distributor will reimburse persons indemnified who are defendants
in such suit for the  reasonable  fees of any legal counsel  retained by them in
such litigation.

     JAS agrees to indemnify and hold harmless the  Distributor  and each of its
directors, officers, employees, and representatives and each person, if any, who
controls  the  Distributor  within  the  meaning  of  Section 15 of the 1933 Act
against any and all losses, liabilities,  damages, claims or expenses (including
the reasonable costs of investigating or defending any alleged loss,  liability,
damage,  claim or  expenses  and  reasonable  legal  counsel  fees  incurred  in
connection  therewith)  to  which  the  Distributor  or such  of its  directors,
officers, employees, representatives or controlling person or persons may become
subject under the 1933 Act, under any other statute, at common law, or otherwise
arising  out of the  acquisition  of any Shares by any  person  which (i) may be
based upon any wrongful act by JAS or any of the  Trustees,  or JAS's  officers,
employees or  representatives  other than the Distributor,  or (ii) may be based
upon any  untrue  statement  or alleged  untrue  statement  of a  material  fact
contained in a  registration  statement,  Prospectus,  Statement  of  Additional
Information,  shareholder  report or other information  covering Shares filed or
made  public by JAS or any  amendment  thereof  or  supplement  thereto,  or the
omission or alleged  omission to state  therein a material  fact  required to be
stated therein or necessary to make the statements therein not misleading unless
such  statement or omission was made in reliance upon  information  furnished by
the  Distributor  to JAS.  In no case  (i) is  JAS's  indemnity  in favor of the
Distributor or any person indemnified to be deemed to protect the Distributor or
such  indemnified  person against any liability to which the Distributor or such
indemnified person would otherwise be subject by reason of willful  misfeasance,
bad faith, or gross negligence in the performance of its or such person's duties
or by reason of its or such person's reckless  disregard of its or such person's
obligations and duties under this  Agreement,  or (ii) is JAS to be liable under
its indemnity  agreement  contained in this  Paragraph with respect to any claim
made against the Distributor or any person  indemnified  unless the Distributor,
or such person,  as the case may be,  shall have  notified JAS in writing of the
claim  within a  reasonable  time  after the  summons,  or other  first  written
notification,  giving  information  of the nature of the claim  served  upon the
Distributor  or upon such person (or after the  Distributor or such person shall
have received notice of such service on any designated agent). However,  failure
to notify JAS of any such claim shall not relieve JAS from any  liability  which
JAS may have to the  Distributor  or any


                                       6
<PAGE>

person  against whom such action is brought  otherwise  than on account of JAS's
indemnity agreement contained in this Paragraph.

     JAS shall be entitled to  participate,  at its own expense,  in the defense
or, if JAS so elects,  to assume the defense of any suit brought to enforce such
claim but, if JAS elects to assume the defense,  such defense shall be conducted
by legal counsel chosen by JAS and  satisfactory to the persons  indemnified who
are  defendants  in the suit. In the event that JAS elects to assume the defense
of any such suit and retain such legal counsel,  the persons indemnified who are
defendants in the suit shall bear the fees and expenses of any additional  legal
counsel  retained  by them.  If JAS does not elect to assume the  defense of any
such suit, JAS will reimburse the persons indemnified who are defendants in such
suit for the reasonable fees and expenses of any legal counsel  retained by them
in such litigation.

     13.  Duration and  Termination  of this  Agreement.  This  Agreement  shall
become  effective as of the date first  written  above and unless  terminated as
provided  herein,  shall remain in effect through July 1, 2000, and from year to
year thereafter with respect to each class of Shares of each Portfolio, but only
so long as such continuance is specifically  approved at least annually (a) by a
vote of a majority  of the  Trustees  who are not parties to this  Agreement  or
interested  persons of any such party,  voting in person at a meeting called for
the purpose of voting on such approval, and (b) by the vote of either a majority
of the  Trustees  or a majority  of the  outstanding  voting  securities  of the
respective class of Shares. If the continuance of this Agreement is not approved
as  to a  class  of  Shares  of a  Portfolio  or a  Portfolio  as a  whole,  the
Distributor  may  continue  to render to that class of Shares or  Portfolio  the
services  described herein in the manner and to the extent permitted by the 1940
Act and the rules and regulations thereunder,  and this Agreement shall continue
with respect to a class of Shares of the  Portfolios,  or those  Portfolios as a
whole that have approved its continuance.  This Agreement may be terminated with
respect to a class of Shares of a Portfolio or a Portfolio  as a whole,  without
the  payment of any  penalty,  on 60 days'  written  notice,  (a) by a vote of a
majority of the  Trustees or by a vote of a majority of the  outstanding  voting
securities of such class of Shares of the Portfolio or of the Portfolio,  (b) in
the case of the Retirement Shares class of Shares of a Portfolio, by a vote of a
majority  of the  Trustees  who are not  interested  persons  of JAS and have no
direct or indirect  financial  interest in the operation of the Distribution and
Shareholder  Servicing Plan for such Shares or in any agreements related to such
Distribution  and  Shareholder  Servicing  Plan,  (c) in the case of the Service
Shares class of Shares of a  Portfolio,  by a vote of a majority of the Trustees
who are not interested  persons of JAS and have no direct or indirect  financial
interest in the operation of the Distribution and Shareholder Servicing Plan for
such Shares or in any agreements  related to such  Distribution  and Shareholder
Servicing  Plan,  or (d) by the  Distributor.  Without  prejudice  to any  other
remedies of JAS, JAS may terminate  this  Agreement at any time  immediately  on
written notice in the event of the  Distributor's  failure to fulfill any of its
obligations  hereunder,  including the  termination  or suspension of any of the
Registrations.  This Agreement will automatically  terminate in the event of its
assignment.


                                       7

<PAGE>

     In  interpreting  the  provisions  of this  Paragraph  13, the  definitions
contained  in Section  2(a) of the 1940 Act  (particularly  the  definitions  of
"interested  person,"  "assignment,"  and  "majority of the  outstanding  voting
securities") shall be applied.

     14.  Amendment of this  Agreement.  No provision of this  Agreement  may be
changed, waived,  discharged, or terminated orally, but only by an instrument in
writing signed by each party against which  enforcement  of the change,  waiver,
discharge, or termination is sought. If JAS should at any time deem it necessary
or advisable in the best interests of a Portfolio or class that any amendment of
this  Agreement  be  made  in  order  to  comply  with  the  recommendations  or
requirements  of the SEC or any other  governmental  authority  or to obtain any
advantage under state or Federal or tax laws and notifies the Distributor of the
form of such amendment, and the reasons therefore, and if the Distributor should
decline to assent to such amendment, JAS may terminate this Agreement as to that
Portfolio or class forthwith. If the Distributor should at any time request that
a change be made in JAS's Trust  Instrument or Bylaws or in its methods of doing
business, or in the registration  statement,  the Prospectus or the Statement of
Additional   Information  of  any  Portfolio,   in  order  to  comply  with  any
requirements of Federal or state law or regulations of the SEC, or of a national
securities association of which the Distributor is or may be a member,  relating
to the sale of Shares,  and JAS should not make such necessary  changes within a
reasonable  time,  the  Distributor  may  terminate  this  Agreement  as to that
Portfolio or class forthwith.

     15.  Limitation  of  Personal  Liability.  The  parties  to this  Agreement
acknowledge  and  agree  that  all  liabilities  of  JAS  arising,  directly  or
indirectly,  under this Agreement, of any and every nature whatsoever,  shall be
satisfied solely out of the assets of JAS and that no Trustee, officer, employee
or agent,  or holder of shares of  beneficial  interest  of JAS,  whether  past,
present or future, shall be personally liable for any of such liabilities.

     16.  Notification by JAS. JAS agrees to advise the Distributor immediately:

          (a)  of any request by the SEC for  amendments  to JAS's  Registration
Statement  insofar as it relates  to the  Shares of any of the  Portfolios,  the
Prospectus  or  the  Statement  of  Additional  Information  or  for  additional
information;

          (b)  in  the  event  of the  issuance  by the  SEC of any  stop  order
suspending  the  effectiveness  of JAS's  Registration  Statement  insofar as it
relates to the Shares of any of the Portfolios,  the Prospectus or the Statement
of Additional Information or the initiation of any proceeding for that purpose;

          (c)  of the  occurrence  of any material  event which makes untrue any
statement  made in JAS's  Registration  Statement  insofar  as it relates to the
Shares of any of the  Portfolios,  the Prospectus or the Statement of Additional
Information  or which  requires  the  making  of a  change  in order to make the
statements therein not misleading; and


                                       8

<PAGE>

          (d)  of all actions of the SEC with respect to any amendments to JAS's
Registration  Statement  insofar as they are related to the Shares of any of the
Portfolios,  the Prospectus or the Statement of Additional Information which may
from time to time be filed with the SEC under the 1933 Act.

     17.   Miscellaneous.  The captions  in  this  Agreement  are  included  for
convenience  of  reference  only,  and  in no way  define  or  limit  any of the
provisions  hereof or  otherwise  affect  their  construction  or  effect.  This
Agreement may be executed  simultaneously in two or more  counterparts,  each of
which shall be deemed an original,  but all of which together  shall  constitute
one and the same instrument.

     18.  Notice.  Any notice  required or  permitted  to be given by a party to
this  Agreement or to any other party  hereunder  shall be deemed  sufficient if
delivered in person or sent by registered or certified  mail,  postage  prepaid,
addressed  by the party  giving  notice to each such other  party at the address
provided below or to the last address  furnished by each such other party to the
party giving notice.

     If to JAS:                       100 Fillmore Street
                                      Denver, Colorado  80206
                                      Attn:  Secretary

     If to the Distributor:           100 Fillmore Street
                                      Denver, Colorado  80206
                                      Attn:  Secretary

     IN WITNESS WHEREOF, the parties have executed this Agreement.

ATTEST:                               JANUS ASPEN SERIES



                                      By:
                                          Thomas H. Bailey
                                          President


ATTEST:                               JANUS DISTRIBUTORS, INC.



                                      By:
                                          Kelley Abbott Howes


                                       9


                                                                    EXHIBIT 5(e)

                 DISTRIBUTION AND SHAREHOLDER SERVICES AGREEMENT
                      Service Shares of Janus Aspen Series
                              (for Qualified Plans)

     This  Agreement  is  made  as  of  ______________,  by  and  between  Janus
Distributors,   Inc.   (the   "Distributor"),   a  Colorado   corporation,   and
__________________________  (the  "Service  Provider"),  a  ____________________
corporation.


                                    Recitals

     A.  The  Distributor  serves  as  the  distributor  to a  class  of  shares
designated  the  "Service  Shares" of each  series of Janus  Aspen  Series  (the
"Trust"),  an  open-end  management  investment  company  registered  under  the
Investment Company Act of 1940 (the "1940 Act").

     B. Service Provider desires to provide certain distribution and shareholder
services to certain  participants ("Plan  Participants") in qualified pension or
retirement  plans ("Plans") in connection  with their  investment in the Service
Shares  of  the  series  of the  Trust  listed  on  Exhibit  A  hereto  (each  a
"Portfolio") and Distributor  desires Service Provider to provide such services,
subject to the conditions of this Agreement.

     C.  Pursuant to Rule 12b-1 under the 1940 Act,  the Service  Shares of each
Portfolio have adopted a Distribution and Shareholder Servicing Plan (the "12b-1
Plan") which, among other things,  authorizes the Distributor to enter into this
Agreement with  organizations  such as Service  Provider and to compensate  such
organizations out of each Portfolio's  average daily net assets  attributable to
the Service Shares.

     D. The parties desire that Service Shares of the Portfolios be available as
investment options for Plan Participants.

                                    Agreement

     1.    Services of Service Provider

          (a)  The  Service  Provider  shall  provide  any  combination  of  the
following support services,  as agreed upon by the parties from time to time, to
Plan Participants who invest in the Service Shares of the Portfolios: delivering
prospectuses,  statements of additional information,  shareholder reports, proxy
statements   and   marketing   materials  to   prospective   and  existing  Plan
Participants;  providing  educational  materials  regarding the Service  Shares;
providing  facilities to answer  questions  from  prospective  and existing Plan
Participants  about the  Portfolios;  receiving  and  answering  correspondence;
complying  with  federal and state  securities  laws  pertaining  to the sale of
Service Shares;  assisting Plan Participants in completing application forms and
selecting account options; and providing participant  record-keeping and similar
administrative services.

                                      -1-
<PAGE>




          (b)  The  Service   Provider   will  provide  such  office  space  and
equipment, telephone facilities, and personnel as may be reasonably necessary or
beneficial in order to provide such services to Plan Participants.

          (c)  All  orders for  Service  Shares are  subject  to  acceptance  or
rejection  by the  Trust in its  sole  discretion,  and the  Trust  may,  in its
discretion and without notice, suspend or withdraw the sale of Service Shares of
any Portfolio, including the sale of such Service Shares to the Service Provider
for the account of any Plan Participant or Participants.

          (d)  Service  Provider shall not make the Service Shares  available to
Plan Participants except in compliance with federal and state securities law and
subject to the terms of the prospectus for the Service Shares.  Service Provider
shall be  responsible  for delivering  the  prospectus,  statement of additional
information  and  similar  materials  for the  Shares  to Plan  Participants  in
accordance with and within the time frames required by applicable law.

          (e)  The Service Provider will furnish to the  Distributor,  the Trust
or their designees such  information as the Distributor may reasonably  request,
and will otherwise  cooperate with the Distributor in the preparation of reports
to the Trust's Board of Trustees concerning this Agreement, as well as any other
reports or filings that may be required by law.

     2. Indemnification.  The Service Provider shall indemnify Distributor,  the
Trust, and their affiliates, directors, trustees, employees and shareholders for
any loss  (including  without  limitation,  litigation  costs and  expenses  and
attorneys'  and  experts'  fees)  directly  resulting  from  Service  Provider's
negligent or willful act,  omission or error,  or Service  Provider's  breach of
this Agreement. Such indemnification shall survive termination of the Agreement.

     3. Approval of Informational Materials. No person is authorized to make any
representations  concerning the Trust,  the Portfolios,  the Service Shares,  or
Distributor   except  those   representations   contained  in  the  then-current
prospectus and statement of additional information for the Service Shares and in
such printed  information as Distributor or the Trust may subsequently  prepare.
Service  Provider  shall send all filings  with state and federal  agencies  and
marketing  materials  in  which  the  Trust  or  the  Portfolios  are  named  to
Distributor  for review at least  fifteen  business  days prior to its filing or
general  release.  No such  materials  shall be used if  Distributor  reasonably
objects to such use.

     4. Maintenance of Records.

          (a)  Service  Provider  shall  maintain  and  preserve  all records as
required by law to be maintained and preserved in connection  with providing the
services  herein.  Upon the  reasonable  request  of  Distributor  or the Trust,
Service Provider shall provide  Distributor,  the Trust or the representative of
either, copies of all such records.


                                      -2-
<PAGE>


         (b)  Service Provider shall maintain and transmit to Distributor on at
least a monthly basis information on sales, redemptions and exchanges of Service
Shares  of  each  Portfolio  by  state  or  jurisdiction  of  residence  of Plan
Participants  and any  other  information  requested  by  Distributor  to enable
Distributor  or its  affiliates  to properly  register or report the sale of the
Service  Shares under the  securities,  licensing or  qualification  laws of the
various states and  jurisdictions.  Such information shall be provided in a form
mutually agreeable to Distributor and Service Provider.

     5. Operations of the Portfolios. Nothing in this Agreement shall in any way
limit the  authority of the Trust or  Distributor  to take such lawful action as
either may deem appropriate or advisable in connection with all matters relating
to the  operation  of the  Portfolios  and the sale of the Service  Shares.  The
parties  acknowledge that nothing in this Agreement shall in any way preclude or
prevent the Trust's Board of Trustees from taking any actions  deemed  necessary
by such Trustees in furtherance of their  fiduciary  duties to the Trust and its
shareholders, which, among other things, may include the refusal to sell Service
Shares of any  Portfolio to any person,  or to suspend or terminate the offering
of the Service Shares of any Portfolio,  if such action is required by law or by
regulatory  authorities having jurisdiction or is, in the sole discretion of the
Trustees,  acting in good faith and in light of the Trustees'  fiduciary  duties
under applicable law, necessary in the best interests of the shareholders of any
Portfolio.

     6. Proprietary Rights. Janus Capital Corporation ("Janus Capital") is
the sole owner of the name and mark "Janus." Neither the Service  Provider,  nor
its  affiliates,  employees,  or agents shall,  without prior written consent of
Janus Capital,  use the name or mark "Janus" or make  representations  regarding
the Trust,  Distributor,  Janus Capital, or their affiliates, or any products or
services sponsored, managed, advised, or administered by the Trust, Distributor,
Janus Capital or their  affiliates,  except those  contained in the then current
prospectus and the then current printed sales  literature for the Service Shares
of the  Portfolios.  Upon  termination  of this  Agreement  for any reason,  the
Service Provider shall immediately cease all use of any Janus mark.

     7. Fees. In consideration of Service Provider's performance of the services
described in this  Agreement,  Distributor  shall pay to the Service  Provider a
monthly fee  ("Distribution  Fee") calculated as follows:  the average aggregate
amount  invested in each month in the Service  Shares of each Portfolio by Plans
whose Plan  Participants  receive services  hereunder by the Service Provider is
multiplied by a pro-rata fee factor.  The pro-rata fee factor is calculated  by:
(a) dividing the per annum factor set forth on Exhibit A for the Service  Shares
of  each  Portfolio  by the  number  of  days in the  applicable  year,  and (b)
multiplying the result by the actual number of days in the applicable month. The
average  aggregate  amount invested over a one-month period shall be computed by
totalling the  aggregate  investment  by Plans whose Plan  Participants  receive
services  hereunder by the Service Provider (share net asset value multiplied by
total number of shares held) on each  calendar day during the month and dividing
by the total number of calendar days during such month.


                                      -3-
<PAGE>


         Distributor  will  calculate the fee at the end of each month and will
make such reimbursement to the Service Provider. The reimbursement check will be
accompanied  by a statement  showing  the  calculation  of the  monthly  amounts
payable by  Distributor  and such  other  supporting  data as may be  reasonably
requested by the Service Provider.

     8.  Non-Exclusivity.  Each of the parties acknowledges and agrees that this
Agreement and the arrangement  described herein are intended to be non-exclusive
and that  each of the  parties  is free to enter  into  similar  agreements  and
arrangements with other entities.

     9.  Representations,   Warranties  and  Agreements.  The  Service  Provider
represents, warrants, and covenants that:

          (a)  The Service  Provider  will comply in all material  respects with
all applicable laws, rules and regulations;

          (b)  The  Service  Provider is  authorized  by the Plans to enter into
this Agreement;

          (c) The Service Provider is registered as a broker and dealer pursuant
to the Securities  Exchange Act of 1934 (the "Exchange  Act") and any applicable
state securities laws or is not required to be registered in order to enter into
and perform the services set forth in this Agreement;

          (d) The  performance  of the duties and  obligations  and provision of
services by Service  Provider as described in this  Agreement and the receipt of
the fee provided in this  Agreement  will not violate  federal or state  banking
law,  the  Employment  Retirement  Income  Security  Act  of  1974,  as  amended
("ERISA"),  the Internal  Revenue Code of 1986, as amended  ("IRC"),  federal or
state securities laws, or any other applicable law;

          (e) The fee  arrangement  under this  Agreement will be disclosed to a
Plan  fiduciary  unrelated  to  the  Service  Provider,  prior  to  the  Service
Provider's receipt of fees hereunder;

          (f) [Select alternative A or B] A. [Neither the Service Provider,  nor
any affiliate,  will be a "fiduciary"  of the Plans,  as such term is defined in
Section 3(21) of the Employee  Retirement Income Security Act f 1974, as amended
("ERISA")  and Section 4975 of the IRC.  Neither the Service  Provider,  nor any
affiliate,  makes  any  investment  recommendations  to any of the Plans or Plan
Participants.]  B. [The Service  Provider will reduce the fees it charges to the
Plans by an  amount  equal to the fees paid  pursuant  to this  Agreement.]  The
receipt of the fees described in this Agreement by the Service Provider will not
constitute a  non-exempt  "prohibited  transaction,"  as such term is defined in
Section 406 of ERISA and Section 4975 of the IRC;





                                   -4-

<PAGE>

          (g) Each Plan meets the  requirements  for qualified plan status under
one of the IRC Sections  listed in Revenue Ruling 94-62  (attached as Exhibit C)
and will continue to meet these requirements.  Service Provider will immediately
notify the Distributor if it obtains  knowledge that such  representation is not
true;

          (h) [Each Plan is a participant-directed plan.] If not explain

          (i) Any of Service  Provider's  trading systems that interact with the
Distributor  via any form of  automated  feed  prior  to,  during  and after the
calendar year 2000 will recognize accurate century data, and user interfaces and
operation environments will comply with Year 2000 application standards.

     10.  Termination.

          (a) Unless  sooner  terminated  with  respect to any  Portfolio,  this
Agreement will continue with respect to a Portfolio if only the continuance of a
form of this Agreement is specifically approved at least annually by the vote of
a  majority  of the  members of the Board of  Trustees  of the Trust who are not
"interested  persons"  (as such term is defined in the 1940 Act) and who have no
direct or  indirect  financial  interest  in the  12b-1  Plan  relating  to such
Portfolio  or  any  agreement  relating  to  such  12b-1  Plan,  including  this
Agreement,  cast in person at a meeting called for the purpose of voting on such
approval.

          (b) This  Agreement  will  automatically  terminate  with respect to a
Portfolio  in the event of its  assignment  (as such term is defined in the 1940
Act) with respect to such  Portfolio.  This  Agreement  may be  terminated  with
respect to any Portfolio by the Distributor or by the Service Provider,  without
penalty,  upon 60 days' prior written notice to the other party.  This Agreement
may also be terminated with respect to any Portfolio at any time without penalty
by the vote of a majority  of the  members of the Board of Trustees of the Trust
who are not  "interested  persons" (as such term is defined in the 1940 Act) and
who have no direct or indirect  financial interest in the 12b-1 Plan relating to
such Portfolio or any agreement relating to such Plan, including this Agreement,
or by a vote of a majority of the Service  Shares of such  Portfolio on 60 days'
written notice.

          (c) In addition, either party may terminate this Agreement immediately
if at any time it is  determined  by any federal or state  regulatory  authority
that  compensation  to be  paid  under  this  Agreement  is in  violation  of or
inconsistent with any federal or state law.

     11.  Miscellaneous.

          (a) No modification of any provision of this Agreement will be binding
unless in writing and  executed by the  parties.  No waiver of any  provision of
this  Agreement  will be binding  unless in writing  and  executed  by the party
granting such waiver.


                                      -5-
<PAGE>

          (b) This  Agreement  shall be  binding  upon  and  shall  inure to the
benefit of the parties and their  respective  successors and assigns;  provided,
however that neither  this  Agreement  nor any rights,  privileges,  duties,  or
obligations  of the parties may be assigned by either party  without the written
consent of the other party or as expressly contemplated by this Agreement.

          (c) This Agreement  shall be governed by and interpreted in accordance
with the laws of the State of Colorado, exclusive of conflicts of laws.

          (d) This  Agreement may be executed in several  counterparts,  each of
which shall be an original but all of which  together  shall  constitute one and
the same instrument.

          (e) All notices and other communications to either Service Provider or
Distributor  will be duly  given if  mailed  or faxed to the  address  set forth
below,  or to such other  address as either  party may provide in writing to the
other party.

         If to Distributor:

         Janus Distributors, Inc.
         100 Fillmore Street
         Denver, Colorado 80206
         Attn:  General Counsel

         If to the Service Provider:






JANUS DISTRIBUTORS, INC.                     __________________________________



By:____________________________               By:_____________________________
  Name:  Kelley Abbott Howes                    Name:
  Title: Vice President                         Title:



                                      -6-
<PAGE>


          Exhibit A to Distribution and Shareholder Services Agreement



         Name of Portfolio                           Fee Factor*

All Portfolios of Janus Aspen Series                    0.25%
(Service Shares)

































*Shall not exceed 0.25%

                                      -7-



                                                                   EXHIBIT 5(f)

                 DISTRIBUTION AND SHAREHOLDER SERVICES AGREEMENT
                      Service Shares of Janus Aspen Series
                            (for Insurance Companies)

     This  Agreement  is  made  as  of  ______________,  by  and  between  Janus
Distributors,   Inc.   (the   "Distributor"),   a  Colorado   corporation,   and
__________________________ (the "Company"), a ____________________ corporation.


                                    Recitals

     A. The Company has entered into a participation  agreement with Janus Aspen
Series  (the  "Trust"),  an open-end  investment  company  registered  under the
Investment  Company Act of 1940 (the "1940 Act") with respect to the purchase of
a class of shares designated "Service Shares" of one or more series of the Trust
(each a "Portfolio") by certain separate accounts of the Company ("Accounts").

     B. The Distributor serves as the distributor to Service Shares.

     C. The Company  desires to provide  certain  distribution  and  shareholder
services to owners  ("Contract  Owners") of variable life insurance  policies or
variable annuity contracts  ("Contracts") in connection with their allocation of
contract values in the Service Shares of the Portfolios and Distributor  desires
Company to provide such services, subject to the conditions of this Agreement.

     D.  Pursuant to Rule 12b-1 under the 1940 Act,  the Service  Shares of each
Portfolio have adopted a Distribution and Shareholder Servicing Plan (the "12b-1
Plan") which, among other things,  authorizes the Distributor to enter into this
Agreement   with   organizations   such  as  Company  and  to  compensate   such
organizations out of each Portfolio's  average daily net assets  attributable to
the Service Shares.


                                    Agreement

     1.   Services of Company

          (a) The Company shall provide any combination of the following support
services,  as agreed upon by the parties from time to time,  to Contract  Owners
who allocate contract values to the Service Shares of the Portfolios: delivering
prospectuses,  statements of additional information,  shareholder reports, proxy
statements and marketing  materials to prospective and existing Contract Owners;
providing  educational   materials  regarding  the  Service  Shares;   providing
facilities to answer  questions from  prospective  and existing  Contract Owners
about the  Portfolios;

                                      -1-
<PAGE>

receiving and answering  correspondence;  complying with
federal and state  securities  laws  pertaining  to the sale of Service  Shares;
assisting Contract Owners in completing  application forms and selecting account
options; and providing Contract Owner record-keeping and similar  administrative
services.

          (b)  The  Company  will  provide  such  office  space  and  equipment,
telephone facilities, and personnel as may be reasonably necessary or beneficial
in order to provide such services to Contract Owners.

          (c) The Company  will furnish to the  Distributor,  the Trust or their
designees such information as the Distributor may reasonably  request,  and will
otherwise  cooperate with the  Distributor in the  preparation of reports to the
Trust's  Board of  Trustees  concerning  this  Agreement,  as well as any  other
reports or filings that may be required by law.

     2. Indemnification. The Company shall indemnify Distributor, the Trust, and
their affiliates,  directors,  trustees, employees and shareholders for any loss
(including without limitation,  litigation costs and expenses and attorneys' and
experts'  fees)  directly  resulting  from  Company's  negligent or willful act,
omission or error, or Company's breach of this Agreement.  Such  indemnification
shall survive termination of the Agreement.

     3.  Maintenance  of Records.  The Company  shall  maintain and preserve all
records as required by law to be maintained  and  preserved in  connection  with
providing the services herein. Upon the reasonable request of Distributor or the
Trust,  Company shall provide  Distributor,  the Trust or the  representative of
either, copies of all such records.

     4.  Fees.  In  consideration  of  Company's  performance  of  the  services
described in this Agreement,  Distributor shall pay to the Company a monthly fee
("Distribution  Fee")  calculated  as  follows:  the  average  aggregate  amount
invested in each month in the Service  Shares of each  Portfolio by the Accounts
is  multiplied  by a pro-rata fee factor.  The pro-rata fee factor is calculated
by: (a)  dividing  the per annum  factor set forth on Exhibit A for the  Service
Shares of each Portfolio by the number of days in the  applicable  year, and (b)
multiplying the result by the actual number of days in the applicable month. The
average  aggregate  amount invested over a one-month period shall be computed by
totaling  the  aggregate  investment  by the  Accounts  (share  net asset  value
multiplied by total number of shares held) on each calendar day during the month
and dividing by the total number of calendar days during such month.

     Distributor  will  calculate the fee at the end of each month and will make
such reimbursement to the Company.  The reimbursement  check will be accompanied
by a  statement  showing  the  calculation  of the  monthly  amounts  payable by
Distributor and such other supporting data as may be reasonably requested by the
Company.


                                      -2-
<PAGE>

     5.  Representations,  Warranties and  Agreements.  The Company  represents,
warrants, and covenants that:

          (a)  It  and  its  employees  and  agents  meet  the  requirements  of
applicable  law,  including but not limited to federal and state  securities law
and state insurance law, for the performance of services contemplated herein;

          (b) It will not purchase  Service  Shares with Account  assets derived
from  tax-qualified  retirement  plans  except  indirectly,   through  Contracts
purchased in connection with such plans and the Service Fee does not include any
payment to the Company that is prohibited under the Employee  Retirement  Income
Securities  Act of 1974 ("ERISA") with respect to any assets of a Contract Owner
invested in a Contract using the Portfolios as investment vehicles;

          (c) If required by  applicable  law, the Company will disclose to each
Contract  Owner the  existence of the  Distribution  Fee received by the Company
pursuant  to this  Agreement  in a form  consistent  with  the  requirements  of
applicable law.

     6.   Termination.

          (a) Unless  sooner  terminated  with  respect to any  Portfolio,  this
Agreement will continue with respect to a Portfolio if only the continuance of a
form of this Agreement is specifically approved at least annually by the vote of
a  majority  of the  members of the Board of  Trustees  of the Trust who are not
"interested  persons"  (as such term is defined in the 1940 Act) and who have no
direct or  indirect  financial  interest  in the  12b-1  Plan  relating  to such
Portfolio  or  any  agreement  relating  to  such  12b-1  Plan,  including  this
Agreement,  cast in person at a meeting called for the purpose of voting on such
approval.

          (b) This  Agreement  will  automatically  terminate  with respect to a
Portfolio  in the event of its  assignment  (as such term is defined in the 1940
Act) with respect to such  Portfolio.  This  Agreement  may be  terminated  with
respect to any Portfolio by the Distributor or by the Company,  without penalty,
upon 60 days' prior written  notice to the other party.  This Agreement may also
be terminated  with respect to any Portfolio at any time without  penalty by the
vote of a majority  of the members of the Board of Trustees of the Trust who are
not "interested  persons" (as such term is defined in the 1940 Act) and who have
no direct or  indirect  financial  interest  in the 12b-1 Plan  relating to such
Portfolio or any agreement relating to such Plan,  including this Agreement,  or
by a vote of a majority  of the  Service  Shares of such  Portfolio  on 60 days'
written notice.

          (c) In addition, either party may terminate this Agreement immediately
if at any time it is  determined  by any federal or state  regulatory  authority
that  compensation  to be  paid  under  this  Agreement  is in  violation  of or
inconsistent with any federal or state law.


                                      -3-
<PAGE>


     7.    Miscellaneous.

          (a) No modification of any provision of this Agreement will be binding
unless in writing and  executed by the  parties.  No waiver of any  provision of
this  Agreement  will be binding  unless in writing  and  executed  by the party
granting such waiver.

          (b) This  Agreement  shall be  binding  upon  and  shall  inure to the
benefit of the parties and their  respective  successors and assigns;  provided,
however that neither  this  Agreement  nor any rights,  privileges,  duties,  or
obligations  of the parties may be assigned by either party  without the written
consent of the other party or as expressly contemplated by this Agreement.

          (c) This Agreement  shall be governed by and interpreted in accordance
with the laws of the State of Colorado, exclusive of conflicts of laws.

          (d) This  Agreement may be executed in several  counterparts,  each of
which shall be an original but all of which  together  shall  constitute one and
the same instrument.


JANUS DISTRIBUTORS, INC.                     __________________________________



By:___________________________               By:______________________________
 Name:  Kelley Abbott Howes                    Name:
 Title: Vice President                         Title:














                                      -4-
<PAGE>


          Exhibit A to Distribution and Shareholder Services Agreement



         Name of Portfolio                        Fee Factor*

All Portfolios of Janus Aspen Series                 0.25%
(Service Shares)

































*Shall not exceed 0.25%


                                      -5-


                                                                 EXHIBIT 9(i)

JANUS
100 FILLMORE STREET
DENVER, COLORADO 80206-4928
PH:  303-316-5644
FAX: 303-639-6662
E-MAIL: [email protected]



October 22, 1999

Janus Aspen Series
100 Fillmore Street
Denver, Colorado 80206-4928

Re:  Public  Offering  of Janus  Aspen  Series  Service  Shares  Class of Growth
     Portfolio,  Aggressive Growth Portfolio,  Capital  Appreciation  Portfolio,
     International  Growth  Portfolio,   Worldwide  Growth  Portfolio,  Balanced
     Portfolio, Equity Income Portfolio,  Growth and Income Portfolio,  Flexible
     Income Portfolio, High-Yield Portfolio, and Money Market Portfolio

Gentlemen:

I have acted as counsel for Janus Aspen Series,  a Delaware  business trust (the
"Trust"),  in  connection  with the  filing  with the  Securities  and  Exchange
Commission  of a  registration  statement  with respect to the proposed  sale of
shares of  beneficial  interest,  $0.001 par value of the  Service  Shares  (the
"Shares"),  as separate  class of shares of the  above-referenced  series of the
Trust.

I have examined the Trust Instrument and Bylaws, as amended,  the proceedings of
the Trust's trustees relating to the  authorization,  issuance and proposed sale
of the Shares,  and such other records and documents as I have deemed  relevant.
Based upon such examination, it is my opinion that upon the issuance and sale of
the Shares in the manner contemplated by the aforesaid  registration  statement,
such Shares will be legally issued, fully paid and nonassessable.

I  hereby  consent  to  the  filing  of  this  opinion  as  an  exhibit  to  the
above-referenced  registration statement.  This opinion is for the exclusive use
of Janus  Aspen  Series  in  connection  with the  filing  of such  registration
statement  with the  Securities  and Exchange  Commission and is not to be used,
circulated,  quoted, relied upon or otherwise referred to by any other person or
for any other purpose.  This opinion is given as of the date hereof and I render
no opinion and  disclaim any  obligation  to revise or  supplement  this opinion
based upon any change in  applicable  law or any  factual  matter that occurs or
comes to my attention after the date hereof.

Very truly yours,


/s/Thomas A. Early
Thomas A. Early
Vice President and General Counsel




                                                                      EXHIBIT 10





                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby  consent to the  incorporation  by  reference  in the  Prospectus  and
Statements of Additional  Information  constituting parts of this Post-Effective
Amendment  No. 20 to the  registration  statement  on N-1A  (the  "Registration
Statement")  of our report  dated  February 3, 1999,  relating to the  financial
statements  and financial  highlights  appearing in the December 31, 1998 Annual
Report to  Shareholders  of Janus Aspen Series,  which is also  incorporated  by
reference into the Registration  Statement.  We also consent to the reference to
us under the heading  "Independent  Accountants" in the Statements of Additional
Information.



/s/PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP

Denver, Colorado
October 25, 1999



                                                                   EXHIBIT 13(b)

                   DISTRIBUTION AND SHAREHOLDER SERVICING PLAN
                      Service Shares of Janus Aspen Series


     WHEREAS,  Janus  Aspen  Series  ("JAS")  engages in business as an open-end
management  investment  company and is registered  as such under the  Investment
Company Act of 1940, as amended (the "Act");

     WHEREAS,  shares of beneficial  interest of JAS are currently  divided into
multiple series ("Portfolios"),  each with three classes of shares, one of which
is designated the "Service Shares";

     WHEREAS, Janus Distributors,  Inc. ("JDI") serves as the distributor of the
Service Shares (the  "Distributor")  pursuant to a Distribution  Agreement dated
September 14, 1999, as amended from time to time, between JDI and JAS; and

     NOW,  THEREFORE,  JAS hereby  adopts with respect to the Service  Shares of
each Portfolio,  and the Distributor hereby agrees to the terms of, the Plan, in
accordance with Rule 12b-1 under the Act on the following terms and conditions:

     1. JAS shall pay to the  Distributor,  as the  distributor  of the  Service
Shares,  a fee for  distribution  of the shares at the rate of up to 0.25% on an
annualized basis of the average daily net assets of the Service Shares, provided
that,  at any time such payment is made,  whether or not this Plan  continues in
effect,  the making  thereof will not cause the  limitation  upon such  payments
established  by this  Plan to be  exceeded.  Such fee  shall be  calculated  and
accrued  daily  and paid at such  intervals  as the  Trustees  shall  determine,
subject  to  any  applicable  restriction  imposed  by  rules  of  the  National
Association of Securities Dealers, Inc.

     2. The amount set forth in  paragraph  1 of this Plan shall be paid for the
Distributor's  services as distributor of the Service Shares in connection  with
any  activities  or  expenses  primarily  intended  to result in the sale of the
Service  Shares,  including,  but  not  limited  to,  payment  of  compensation,
including  incentive  compensation,  to securities  dealers and other  financial
institutions and organizations (collectively, the "Service Providers") to obtain
various distribution related and/or administrative services for the investors in
the Service Shares  (contract  owners in the case of insurance  company separate
accounts that invest in the Service Shares or plan  participants  in the case of
qualified plans that invest in the Service Shares).  These services may include,
but  are  not  limited  to the  following  functions:  printing  and  delivering
prospectuses,  statements of additional information,  shareholder reports, proxy
statements and marketing  materials related to the Service Shares to prospective
and  existing  contract  owners  and plan  participants;  providing  educational
materials regarding the Service Shares; providing facilities to answer questions
from prospective and existing  contract owners and plan  participants  about the
Portfolios;  receiving and answering correspondence;  complying with federal and
state  securities laws  pertaining to the sale of Service Shares;  and assisting
contract  owners  and plan  participants

                                       1
<PAGE>

in  completing  application  forms and  selecting  dividend  and other  accounts
options;  and  providing  contract  owner  or  participant  record  keeping  and
administrative  services.  The Distributor is also authorized to engage directly
in any activities relating to the purposes of this plan. In addition,  this Plan
hereby  authorizes  payment  by JAS of  the  cost  of  preparing,  printing  and
distributing  prospectuses and statements of additional  information relating to
the Service Shares to prospective  investors and of  implementing  and operating
the  Plan.   Payments  under  the  Plan  are  not  tied  exclusively  to  actual
distribution and service expenses,  and the payments may exceed distribution and
service expenses actually incurred.

     3. This Plan shall not take  effect  until it,  together  with any  related
agreements, has been approved by votes of a majority of both (a) the Trustees of
JAS and (b) those  Trustees of JAS who are not  "interested  persons" of JAS (as
defined in the Act) and who have no direct or indirect financial interest in the
operation  of this  Plan  or any  agreements  related  to it  (the  "Rule  12b-1
Trustees"),  cast in person at a meeting (or meetings) called for the purpose of
voting on this Plan and such related agreements.

     4. After  approval as set forth in paragraph 3, this Plan shall take effect
as of the date of execution. The Plan shall continue in full force and effect as
to the Service Shares of each  Portfolio of JAS for so long as such  continuance
is  specifically  approved at least annually in the manner provided for approval
of this Plan in paragraph 3.

     5. The  Distributor  shall provide to the Trustees of JAS, and the Trustees
shall review,  at least  quarterly,  a written report of the amounts so expended
and the purposes for which such expenditures were made.

     6. This Plan may be terminated as to the Service Shares of any Portfolio of
JAS at any time, without payment of any penalty, by vote of the Trustees of JAS,
by vote of a majority of the Rule 12b-1 Trustees,  or by a vote of a majority of
the outstanding voting securities of the Service Shares of JAS.

     7.  This Plan may not be  amended  to  increase  materially  the  amount of
distribution  fee provided for in  paragraph 1 hereof for any  Portfolio  unless
such  amendment  is approved by a vote of a majority of the  outstanding  voting
securities  (as defined in the Act) of the Service  Shares of that Portfolio and
no material  amendment  to the Plan shall be made unless  approved in the manner
provided for approval and annual renewal in paragraph 3 hereof.

     8. While this Plan is in effect,  the selection and  nomination of Trustees
who are not  "interested  persons"  (as  defined  in the  Act) of JAS  shall  be
committed to the discretion of the Trustees who are not such interested persons.

     9. JAS shall  preserve  copies of this Plan and any related  agreements and
all reports made  pursuant to paragraph 5 hereof,  for a period of not less than
six years from the date of this

                                       2
<PAGE>

Plan, any such  agreement or any such report,  as the case may be, the first two
years in an easily accessible place.

     IN WITNESS WHEREOF, JAS, on behalf of the Service Shares of each Portfolio,
and   the   Distributor   have   executed   this   Distribution   Plan   as   of
___________________.

                                   JANUS ASPEN SERIES



                                   By:_______________________________________
                                   Name:  Thomas H. Bailey
                                   Title: President


                                   JANUS DISTRIBUTORS, INC.



                                   By:_______________________________________
                                   Name:  Kelley Abbott Howes
                                   Title: Vice President














                                       3





                                                                 EXHIBIT 15(c)

                                                            September 14, 1999

                                 RULE 18f-3 PLAN
                               Janus Aspen Series

     This Rule 18f-3 Plan ("Plan") is adopted by Janus Aspen Series ("JAS") with
respect to Institutional Shares,  Retirement and Service Shares (each a "Class")
of each existing and future  Portfolio (each a "Portfolio") of JAS in accordance
with the provisions of Rule 18f-3 under the Investment  Company Act of 1940 (the
"Act").

     1.  Features  of the  Classes.  Each  Portfolio  may  issue  its  shares of
beneficial   interest  in  three  classes:   the  "Institutional   Shares,"  the
"Retirement Shares" and "Service Shares."  Institutional Shares may be sold only
to insurance  company separate  accounts and qualified plans.  Retirement Shares
may be sold only to qualified  plans that require a fee out of Portfolio  assets
to  procure   distribution  and  administrative   services  to  plans  and  plan
participants.  Service Shares may be sold to insurance company separate accounts
and  qualified  plans  that  require a fee out of  Portfolio  assets to  procure
distribution  and/or  administrative  services to contract  owners or plans/plan
participants.  In the case of qualified  plan  investors in the Service  Shares,
such  plans  require  a fee that is lower  than that  payable  with  respect  to
Retirement Shares,  because, for example,  they are compensated from a different
source or they are providing a less costly level of services. Class Expenses, as
defined in Section 2 below  relating to each Class are borne solely by the Class
to which they  relate and within  each Class are borne by each share pro rata on
the basis of its net asset value.  Each Class shall have exclusive voting rights
on any matter  submitted to  shareholders  that relates solely to its service or
distribution arrangement and each Class shall have separate voting rights on any
matter submitted to shareholders in which the interests of one Class differ from
the interests of any other Class. In addition,  Institutional


                                      -1-
<PAGE>

Shares,  Retirement Shares and Service Shares shall have the features  described
in Sections 2 through 5 below.

     2.  Class  Expenses.  Expenses  incurred  by JAS that are  chargeable  to a
specific Class ("Class  Expenses")  include expenses (not including  advisory or
custodial  fees or other  expenses  related to the  management  of a Portfolio's
assets)  that  are  incurred  in a  different  amount  by that  Class  or are in
consideration  of services  provided  to that Class of a different  kind or to a
different degree than are provided to another Class. Class Expenses include: (i)
the Distribution Fee and Participant  Administration  Fee described in Section 3
applicable  to the  Retirement  Shares and the  Distribution  Fee  described  in
Section 3 applicable to Service Shares;  (ii) expenses  related to preparing and
distributing  materials  such as  shareholder  reports,  prospectuses  and proxy
statements to current  shareholders of record (i.e.,  insurance company separate
accounts and qualified  plans, as omnibus  accounts) of a specific Class;  (iii)
Blue Sky fees incurred with respect to a specific  Class;  (iv)  administrative,
subaccounting  and transfer agency expenses in connection with the  shareholders
of record (omnibus  accounts)  investing in a specific Class;  (v) litigation or
other legal expenses  relating to a specific Class; (vi) fees or expenses of the
Trustees  of JAS who are not  interested  persons of Janus  Capital  Corporation
("Independent  Trustees"),  and of counsel and  consultants  to the  Independent
Trustees,  incurred as a result of issues  relating to a specific  Class;  (vii)
auditing  and  consulting  expenses  relating  to a specific  Class;  and (viii)
additional  expenses incurred with respect to a specific Class as identified and
approved by the Trustees of JAS and the Independent  Trustees.

     3.   Distribution  Fees and Participant  Administration  Fee.

          (a)  Retirement  Shares.  The Trust has  adopted  a  Distribution  and
Shareholder Servicing Plan pursuant to Rule 12b-1 with respect to the Retirement
Shares  of  each  Portfolio.


                                      -2-
<PAGE>

Under the terms of the Plan, JAS pays Janus  Distributors,  Inc., as Distributor
of the Retirement Shares, a "Distribution Fee" out of the assets attributable to
the Retirement  Shares of each Portfolio,  in an amount up to 0.25% on an annual
basis of the average  daily net assets of that class.  JDI is  permitted  to use
this  fee to  compensate  financial  intermediaries  that  provide  services  in
connection with any activities or expenses  primarily  intended to result in the
sale of Retirement Shares.

          Under the terms of the  Distribution  and Shareholder  Servicing Plan,
these  services may include,  but are not limited to, the  following  functions:
printing and  delivering  prospectuses,  statements of  additional  information,
shareholder  reports,  proxy statements and marketing  materials  related to the
Retirement  Shares to  prospective  and existing  plan  participants;  providing
educational  materials regarding the Retirement Shares;  providing facilities to
answer  questions  from  prospective  and existing plan  participants  about the
Portfolios;  receiving and answering correspondence;  complying with federal and
state securities laws pertaining to the sale of Retirement Shares; and assisting
plan  participants in completing  application  forms and selecting  dividend and
other account options.

          JAS pays Janus Service Corporation  ("JSC"), as Transfer Agent of JAS,
a  "Participant  Administration  Fee,"  out of the  assets  attributable  to the
Retirement Shares of each Portfolio, in an amount up to 0.25% on an annual basis
of the average daily net assets of that class.  JSC is permitted to use this fee
to compensate  service providers that provide  recordkeeping,  subaccounting and
other administrative  services to qualified plan participants that invest in the
Retirement  Shares.  Such  services  may  include,  but are not  limited to, the
following functions: furnishing participant subaccounting;  maintaining separate
records  for  each  plan

                                      -3-
<PAGE>

reflecting  purchase  and  redemption  transactions;   processing  purchase  and
redemption  transactions;  disbursing  or crediting to the plan and  maintaining
records of all proceeds of redemptions of shares and all other distributions not
reinvested  in  shares;   preparing  and   transmitting   to  the  plans,   plan
participants,  or the trustees of the plans periodic account  statements showing
the total number of shares owned by each plan or participant as of the statement
closing date,  purchases and  redemptions  of shares by the plan or  participant
during  the  period  covered  by the  statement,  and the  dividends  and  other
distributions  paid to the  plan or  participant  during  the  statement  period
(whether  paid in cash or  reinvested in shares),  and the  integration  of such
statements  with those of other  transactions  and balances in other accounts of
the plan or  participant;  transmitting  to JAS or its agents  periodic  reports
necessary  to enable JAS to comply  with state  Blue Sky  requirements;  issuing
confirmations  of purchase  orders and redemption  requests placed by the plans;
maintaining all account balance  information for the plans and daily and monthly
purchase summaries  expressed in shares and dollar amounts;  preparing,  filing,
and transmitting all federal, state, and local government reports and returns as
required by law with  respect to each  account  maintained  on behalf of a plan;
maintaining  account  designations  and  addresses;  and printing and delivering
prospectuses,  statements of additional  information,  shareholder  reports, and
proxy statements to existing plan  participants.

          (b)  Institutional  Shares.  JAS  does not pay a  Distribution  Fee or
Participant  Administration Fee with respect to the Institutional Shares of each
Portfolio  (although  JAS does pay  administrative,  subaccounting  and transfer
agency  expenses  necessary  for each  insurance  company  separate  account  or
qualified plan as an omnibus  account to invest in the  Institutional  Shares as
discussed under "Class Expenses" above).


                                      -4-
<PAGE>

          (c)  Service  Shares.   The  Trust  has  adopted  a  Distribution  and
Shareholder  Servicing  Plan  pursuant to Rule 12b-1 with respect to the Service
Shares  of  each  Portfolio.  Under  the  terms  of the  Plan,  JAS  pays  Janus
Distributors,  Inc., as Distributor of the Service Shares, a "Distribution  Fee"
out of the assets  attributable to the Service Shares of each  Portfolio,  in an
amount up to 0.25% on an annual  basis of the  average  daily net assets of that
class.  JDI is permitted to use this fee to  compensate  insurance  companies or
financial  intermediaries that provide services in connection with recordkeeping
and  administrative  services as well as any  activities  or expenses  primarily
intended  to  result  in the sale of  Service  Shares.

          Under the terms of the  Distribution  and Shareholder  Servicing Plan,
these  services may include,  but are not limited to, the  following  functions:
printing and  delivering  prospectuses,  statements of  additional  information,
shareholder  reports,  proxy statements and marketing  materials  related to the
Service  Shares  to   prospective   and  existing   contract   owners  and  plan
participants;  providing  educational  materials  regarding the Service  Shares;
providing  facilities to answer questions from prospective and existing contract
owners and plan  participants  about the  Portfolios;  receiving  and  answering
correspondence;  complying with federal and state  securities laws pertaining to
the sale of Service Shares;  assisting  contract owners and plan participants in
completing  application forms and selecting  dividend and other account options;
and performing  contract owner or participant  recordkeeping and  administrative
services.

          4.  Differences  in  Class  Expenses.  The  differences  in the  Class
Expenses  payable by each Class  pursuant to this Plan are due to the  differing
levels of  services  provided or procured  by JAS to  beneficial  owners  (i.e.,
contract owners and plan participants) eligible to purchase shares of each Class
through  omnibus  accounts  (i.e.,   insurance  company  separate  accounts  and
qualified plans) and to the differing levels of expenses expected to be incurred
with

                                      -5-
<PAGE>

respect to each Class.  Institutional  Shares may be sold to  insurance  company
separate accounts and qualified plans that do not require a fee out of Portfolio
assets to procure distribution and administrative services to plan participants.
For the  Institutional  Shares,  the contract  owners or plan  participants  are
typically charged a fee for such services directly at the contract or plan level
(or the qualified plan sponsor bears these fees). Retirement Shares will be sold
to qualified plans whose service  providers  require a fee from Portfolio assets
for providing  such services.  Service  Shares may be sold to insurance  company
separate  accounts and  qualified  plans that also require a fee from  Portfolio
assets for providing such services,  but in the case of qualified plan investors
in the Service Shares,  such plans require a fee that is lower than that payable
with respect to Retirement Shares,  because,  for example,  they are compensated
from a different  source or they are  providing a less costly level of services.

          5.  Exchange  Privilege.   The  exchange  privilege  offered  by  each
Portfolio  provides  that shares of a Class may be exchanged  only for shares of
the same Class of another  Portfolio  (provided  that Portfolio is offered as an
investment  option by the particular  insurance  company or qualified  plan).

          6. Effective  Date. This Plan was adopted as of December 10, 1996, and
amended as of June 15, 1999 and September 14, 1999,  pursuant to  determinations
made by the Trustees of JAS,  including a majority of the Independent  Trustees,
that the multiple class structure and the allocation of expenses as set forth in
the  Plan  are in the  best  interests  of  each  of the  Institutional  Shares,
Retirement Shares and Service Shares  individually and each Portfolio and JAS as
a whole.  This Plan will continue in effect until  terminated in accordance with
Section  8.

          7. Amendment. Material amendments to the Plan may be made with respect
to a Class at any time with the  approval of the  Trustees  of JAS,  including a
majority of the

                                      -6-
<PAGE>

Independent  Trustees,  upon  finding  that the Plan as  proposed to be amended,
including  the  allocation of expenses,  is in the best  interests of each Class
individually and each Portfolio and JAS as a whole.  Non-material  amendments to
the Plan may be made by Janus Capital  Corporation at any time.

          8.  Termination.  This Plan may be terminated by the Trustees  without
penalty at any time.









                                      -7-



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