LORD ABBETT INVESTMENT TRUST
485BPOS, 1999-04-30
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                                                      1933 Act File No. 33-68090
                                                      1940 Act File No. 811-7988

                        SECURITIES & 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. 24                    [X]

                                     and/or

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

                              Amendment No. 24                           [X]

                          LORD ABBETT INVESTMENT TRUST
                Exact Name of Registrant as Specified in Charter

                  767 FIFTH AVENUE, NEW YORK, N. Y. 10153-0203
                     Address of Principal Executive Office

                  Registrant's Telephone Number (212) 848-1800

                       Lawrence H. Kaplan, Vice President
                    767 FIFTH AVENUE, NEW YORK, N. Y. 10153
                    (Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box)

     X   immediately on filing pursuant to paragraph (b) 
   -----
         on April 30, 1999 pursuant to paragraph (b) of
   -----
         60 days after filing pursuant to paragraph (a) (1) 
   -----
         on (date) pursuant to paragraph (a) (1) 
   -----
         75 days after filing pursuant to paragraph (a) (2) 
   -----
         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>



Lord Abbett

CLASS Y SHARES
PROSPECTUS
May 1, 1999

Affiliated Fund
Growth Opportunities Fund
High Yield Fund
International Series
Large-Cap Series
Small-Cap Value Series

[LOGO]

As with all mutual funds, the Securities and Exchange Commission does not
guarantee that the information in this prospectus is accurate or complete, and
it has not judged these funds for investment merit. It is a criminal offense to
state otherwise.

Only class Y shares of the International Series, the Small-Cap Value Series
and the Large-Cap Series are available in all states. Please call 800-821-5129
for further information.







Page>



                                 Table of Contents

<TABLE>
<CAPTION>
                                     The Funds                      Page
<S>                                      <C>                        <C>
Information about goal/                  Affiliated Fund               2
strategy, main risks, past               Growth Opportunities Fund     4
performance, fees and expenses           High Yield Fund               6
                                         International Series          8
                                         Large-Cap Series             10
                                         Small-Cap Value Series       12

                                    Your Investment

Information for managing                 Purchases                    14
your fund account                        Redemptions                  15
                                         Distributions and Taxes      15
                                         Services For Fund Investors  16
                                         Management                   16

                                    For More Information

How to learn more                        Other Investment Techniques  18
about the funds                          Glossary of Shaded Terms     22
                                         Recent Performance           22

                                    Financial Information

Financial highlights and/or              Affiliated Fund              24
line graph comparisons                   Growth Opportunities Fund    26
of certain funds                         International Series         27
                                         Large-Cap Series             29
                                         Small-Cap Value Series       30

How to learn more about the              Back Cover
funds and other Lord Abbett funds
</TABLE>





<PAGE>


                                                                 AFFILIATED FUND

GOAL/STRATEGY

     The fund's investment objective is long-term growth of capital and income
     without excessive fluctuations in market value. Typically, in choosing
     stocks, we look for companies using a three-step process:

       QUANTITATIVE RESEARCH is performed on a universe of large, seasoned U.S.
       and multi-national companies to identify those whose stocks we believe
       represent the best bargains.

       FUNDAMENTAL RESEARCH is conducted to assess a company's operating
       environment, resources and strategic plans, and to determine its
       prospects for exceeding the earnings expectations reflected in its stock
       price.
     

       BUSINESS CYCLE ANALYSIS is used to assess the economic and interest-rate
       sensitivity of our portfolio. This analysis helps us assess how adding or
       deleting stocks changes our portfolio's overall sensitivity to economic
       activity and interest rates.

     We believe that investors purchase and redeem our shares to meet long-term
     financial objectives rather than to try to take advantage of short-term
     price fluctuations. If so, their needs are best served by an investment
     seeking capital appreciation with less fluctuations in market value than
     the Standard & Poor's Composite Index of 500 stocks ("S&P 500'r' Index").
     For this reason, we try to keep our assets invested in securities which are
     selling at reasonable prices and, therefore, we are willing to forego some
     opportunities for gains when, in our judgment, they are too risky.

     We generally sell a stock when we think it is no longer a bargain, appears
     less likely to benefit from the current market and economic environment,
     shows deteriorating fundamentals or falls short of our expectations. 

     While typically fully invested, at times we may take a temporary defensive
     position by investing some of our assets in short-term debt securities.
     This could have the effect of reducing the benefit from any upswing in the
     market and prevent the fund from realizing its investment objective.

MAIN RISKS

     While stocks have historically been a leading choice of long-term
     investors, they fluctuate in price. The value of your investment in the
     fund will go up and down.

     Our performance may sometimes be lower or higher than that of other
     types of funds (such as those emphasizing small-company stocks or
     growth stocks) because different types of stocks tend to shift in
     and out of favor depending on market and economic conditions. While there
     is the risk that an investment may never reach what we think is its full
     value, or may go down in value, our emphasis on large, seasoned company
     bargain stocks could potentially limit our downside risk because bargain
     stocks in theory are already underpriced and large, seasoned company stocks
     tend to be less volatile than small company stocks. In the long run, we may
     produce more modest gains than riskier stock funds as a trade-off for this
     potentially lower risk.

     An investment in the fund is not a bank deposit. It is not FDIC insured or
     government-endorsed. It is not a complete investment program. You could
     lose money in this fund.

WE OR THE FUND refers to Lord Abbett Affiliated Fund, Inc. (the "company"),
which operates under the supervision of the company's Board with the advice of
Lord, Abbett & Co.("Lord Abbett"), its investment manager. 

ABOUT THE FUND. The fund is a professionally managed portfolio primarily holding
securities purchased with the pooled money of investors. It strives to reach its
stated goal, although as with all funds, it cannot guarantee results. 

LARGE COMPANIES are established companies that are considered "known
quantities." Large com-panies often have the resources to weather economic
shifts, though they can be slower to innovate than small companies. 

SEASONED COMPANIES are usually established companies whose securities have
gained a reputation for quality with the investing public and enjoy liquidity in
the market.

BARGAIN STOCKS are stocks of companies that appear underpriced according to
certain financial measurements of their intrinsic worth or business prospects.


SMALL-COMPANY STOCKS are stocks of smaller companies which often are new and
less established, with a tendency to be faster-growing but more volatile than
large company stocks. 

GROWTH STOCKS are stocks which exhibit faster-than-average gains in earnings and
are expected to continue profit growth at a high level, but also tend to be more
volatile than bargain stocks. 

You should read this entire prospectus, including "Other Investment Techniques,"
which concisely describes the other investment strategies, and their risks, used
by the fund.


2 The Funds




Page>



                                                                 AFFILIATED FUND

PAST PERFORMANCE(i)

     The information below provides some indication of the risks of investing in
     the fund, by showing changes in the fund's class A shares' performance from
     calendar year to calendar year and by showing how the fund's average annual
     returns compare with those of a broad measure of market performance. Past
     performance is not a prediction of future results.

[BAR GRAPH]

1989      23.5$
1990      -5.2%
1991      22.0%
1992      12.4%
1993      13.2%
1994      4.1%
1995      31.7%
1996      20.1%
1997      25.2%
1998      14.4%

Best Quarter:  4th Q 98 17.10%
Worst Quarter: 3rd Q 90 (12.57)%

The table below shows a comparison of the fund's class A average annual total
return to that of the S&P 500'r' Index. Fund returns assume reinvestment of
dividends and distributions and payment of the maximum applicable front-end or
deferred sales charge. All periods end on December 31, 1998.

<TABLE>
<CAPTION>
CLASS                     1 YEAR    5 YEARS    10 YEARS    SINCE INCEPTION(iii)
<S>                        <C>       <C>         <C>           <C>   
A(i)                       7.90%     17.30%      14.97%        12.67%
- -----------------------------------------------------------------------------
S&P 500'r' Index(ii)      28.74%     24.08%      19.20%           -          
- -----------------------------------------------------------------------------
</TABLE>
(i) Because class Y shares are new, the bar chart and table show returns for
    class A shares. Returns for class Y shares will be somewhat higher, because
    class Y shares have lower expenses. 

(ii) Performance for the unmanaged S&P 500'r' Index does not reflect transaction
     costs or management fees.

(iii) The date of inception for class A shares is 1/1/50.

FEES AND EXPENSES

   This table describes the fees and expenses that you may pay if you buy and
   hold shares of the fund.
<TABLE>
<CAPTION>
===============================================================================
Fee table
==================================================================================================
                                                               CLASS Y
<S>                                                             <C>
SHAREHOLDER FEES (Fees paid directly from your investment)
- --------------------------------------------------------------------------------------------------
Maximum Sales Charge on Purchases (as a % of offering price)     none
- --------------------------------------------------------------------------------------------------
Maximum Deferred Sales Charge (See "Purchases")                  none
- --------------------------------------------------------------------------------------------------
ANNUAL FUND OPERATING EXPENSES (Expenses deducted from fund assets) (as a % of average net assets)
- --------------------------------------------------------------------------------------------------
Management Fees (See "Management")                               0.31%
- --------------------------------------------------------------------------------------------------
Other Expenses (See "Management")                                0.09%
- --------------------------------------------------------------------------------------------------
Total Operating Expenses                                         0.40%
- --------------------------------------------------------------------------------------------------
</TABLE>

===============================================================================
Expense example
===============================================================================
This example, like that in other funds' prospectuses, assumes a $10,000 initial
investment, 5% total return each year and no changes in expenses. You pay the
following expenses over the course of each period shown if you sell your shares
at the end of the period, although your actual cost may be higher or lower. You
also would pay the same expenses, assuming you kept your shares. 

<TABLE>
<CAPTION>
SHARE CLASS           1 YEAR          3 YEARS         5 YEARS        10 YEARS 
<S>                    <C>             <C>              <C>            <C> 
Class Y shares         $41             $128             $224           $507
- -------------------------------------------------------------------------------
</TABLE>

This example is for comparison and is not a representation of the fund's actual
expenses or returns, either past or present.

MANAGEMENT FEES are payable to Lord Abbett for the fund's invest-ment
management. 

OTHER EXPENSES include fees paid for miscellaneous items such as
shareholder services and professional fees.




                                                                     The Funds 3





<PAGE>


                                                       Growth Opportunities Fund

GOAL / STRATEGY

     The fund's investment objective is capital appreciation. Normally, we
     invest primarily in common stocks of mid-sized companies with outstanding
     equity securities having an aggregate market value between $1 billion and
     $6 billion. The fund uses a growth style of investing which means that we
     favor companies that show the potential for stronger than expected earnings
     or growth. Under normal circumstances, at least 65% of our total assets
     will consist of investments made in growth companies, as determined at the
     time of purchase. The fund may invest up to 35% of its assets in foreign
     securities.

     Typically, in choosing stocks, we look for companies using the following
     process:

          QUANTITATIVE RESEARCH is performed on a universe of middle-sized
          companies to identify those with superior growth possibilities.

          FUNDAMENTAL RESEARCH is performed to identify companies likely to
          produce superior returns over a thirty-six month time frame,
          identified by analyzing the dynamics in each company within its
          industry and within the economy.

     Before July 15, 1998, the fund used a value style of investing. This meant
     that companies were selected without regard to current earnings, under a
     process that sought to identify and invest in undervalued securities.

     We may take a temporary defensive position by investing some of our assets
     in short-term debt securities. This could reduce the benefit from any
     upswing in the market and prevent the fund from achieving its investment
     objective.

MAIN RISKS

     The value of your investment will fluctuate in response to stock market
     movements. In addition, growth stocks tend to be more volatile than
     slower-growing value stocks. This means that the fund could be more
     volatile than the stock market as a whole.

     The foreign securities in which the fund may invest are subject to currency
     fluctuations. Foreign securities markets may not be subject to the same
     degree of regulation as the U.S. markets and may be more volatile and less
     liquid than the U.S. markets. Investors should also be aware that the fund
     has the ability to invest in derivatives, the value of which may fluctuate
     greatly.

     An investment in the fund is not a bank deposit. It is not FDIC insured or
     government-endorsed. It is not a complete investment program. You could
     lose money in this fund.

WE OR THE FUND refers to Lord Abbett Growth Opportunities Fund, a portfolio of
Lord Abbett Research Fund, Inc. (the "company") which operates under the
supervision of the company's Board with the advice of Lord, Abbett & Co.("Lord
Abbett"), its investment manager.

ABOUT THE FUND. The fund is a professionally managed portfolio primarily holding
securities purchased with the pooled money of investors. It strives to reach its
stated goal, although as with all funds, it cannot guarantee results.

GROWTH STOCKS exhibit faster-than-average gains in earnings and are expected to
continue profit growth at a high level, but also tend to be more volatile than
bargain stocks.

You should read this entire prospectus, including "Other Investment Techniques,"
which concisely describes the other investment strategies, and their risks, used
by the fund.


4 The Funds





Page>



                                                       Growth Opportunities Fund


PAST PERFORMANCE(i)

     The information below provides some indication of the risks of investing in
     the fund, by showing changes in the fund's class A shares' performance from
     calendar year to calendar year and by showing how the fund's average annual
     returns compare with those of a broad measure of market performance. Past
     performance is not a prediction of future results.

[GRAPHIC OMITTED]

1996      23.7%
1997      30.9%
1998      13.4%

Best Quarter:  4th Q 29.75%
Worst Quarter: 3rd Q 98 (20.70)%

===============================================================================
The table below shows a comparison of the fund's class A average annual total
return to that of the Russell Mid-Cap Growth Index'r' ("RMCG Index"). Fund
returns assume reinvestment of dividends and distributions and payment of the
maximum applicable front-end or deferred sales charge. All periods end on
December 31, 1998.

<TABLE>
<CAPTION>
CLASS                                       1 YEAR         SINCE INCEPTION(iv)
A(i)                                         6.90%              19.50%
- -------------------------------------------------------------------------------
<S>                                           <C>                 <C>       
RMCG Index'r'(ii)                             17.86%              18.49%(ii)
- -------------------------------------------------------------------------------
</TABLE>

(i)   Because class Y shares are new, the bar chart and table show returns for
      class A shares. Returns for class Y shares will be somewhat higher,
      because class Y shares have lower expenses.

(ii)  Performance for the unmanaged RMCG Index'r' does not reflect transaction
      costs or management fees.

(iii) This represents total return for the period 7/31/95 - 12/31/98.

(iv)  The date of inception for class A shares is 8/1/95.

FEES AND EXPENSES

     This table describes the fees and expenses that you may pay if you buy and
hold shares of the fund.

<TABLE>
<CAPTION>
================================================================================
Fee table
================================================================================
                                                            CLASS Y
<S>                                                          <C>   
SHAREHOLDER FEES (Fees paid directly from your investment)
- -------------------------------------------------------------------------------
Maximum Sales Charge on Purchases (as a % of offering price)  none
- -------------------------------------------------------------------------------
Maximum Deferred Sales Charge (See "Purchases")               none
- -------------------------------------------------------------------------------
ANNUAL FUND OPERATING EXPENSES (Expenses deducted from fund assets) (as a % of
average net assets)
- -------------------------------------------------------------------------------
Management Fees (See "Management")                            0.90%
- -------------------------------------------------------------------------------
Other Expenses (See "Management")                             0.81%
- -------------------------------------------------------------------------------
Total Operating Expenses                                      1.71%
- -------------------------------------------------------------------------------
</TABLE>

Expense example

This example, like that in other funds' prospectuses, assumes a $10,000 initial
investment, 5% total return each year and no changes in expenses. You pay the
following expenses over the course of each period shown if you sell your shares
at the end of the period, although your actual cost may be higher or lower. You
also would pay the same expenses, assuming you kept your shares.

<TABLE>
<CAPTION>
SHARE CLASS                  1 YEAR      3 YEARS       5 YEARS     10 YEARS
<S>                            <C>         <C>          <C>          <C>   
Class Y shares                 $174        $538         $928         $2,022
- -------------------------------------------------------------------------------
</TABLE>

This example is for comparison and is not a representation of the fund's actual
expenses or returns, either past or present

MANAGEMENT FEES are payable to Lord Abbett for the fund's invest-ment
management.

OTHER EXPENSES include fees paid for miscellaneous items such as shareholder
services and professional fees. Lord Abbett is currently waiving the management
fee and subsidizing the other expenses of the Growth Opportunities Fund. Lord
Abbett may stop waiving the management fee and subsidizing other expenses at any
time. Total operating expenses with the fee waiver and expense subsidy for class
Y shares are zero percent.


                                                                     The Funds 5




<PAGE>



                                                      High Yield Fund

GOAL/STRATEGY

    The fund's investment objective is to seek high current income and the
    opportunity for capital appreciation to produce a high total return.
    Normally, we invest in lower-rated debt securities, sometimes called "junk
    bonds," which entail greater risks than investments in higher-rated debt
    securities.

    We believe that a high total return (current income and capital
    appreciation) may be derived from an actively managed, diversified security
    portfolio. Under normal circumstances, we invest at least 65% of our total
    assets in lower-rated debt securities, some of which are convertible into
    common stock or have warrants to purchase common stock.

    We seek unusual values, particularly in lower-rated debt securities, some of
    which are convertible into common stocks or have warrants to purchase common
    stocks. Higher yield on debt securities can occur during periods of
    inflation when the demand for borrowed funds is high. Also, buying
    lower-rated bonds when the credit risk is above average but, we think,
    likely to decrease, may generate higher yields.

    While typically fully invested, we may take a temporary defensive position
    by investing some of our assets in short-term debt securities. This could
    reduce the benefit from any upswing in the market.

MAIN RISKS

    The lower-rated bonds in which the fund invests involve risks that the
    bond's issuers will not make payments of interest and principal payments
    when due. Some issuers may default as to principal and/or interest payments
    after we purchase their securities. Through portfolio diversification,
    credit analysis and attention to current developments and trends in interest
    rates and economic conditions, we attempt to reduce investment risk, but
    losses may occur. In addition, the value of your investment will change as
    interest rates fluctuate. When interest rates decline, share value may rise.
    When interest rates rise, share value may decline. The fund uses investment
    practices that could adversely affect performance, such as investments in
    foreign securities, and illiquid securities.

    An investment in the fund is not a bank deposit. It is not FDIC insured or
    government endorsed. It is not a complete investment program. You could lose
    money in this fund.


WE OR THE FUND refers to Lord Abbett High Yield Fund, Inc., a portfolio of Lord
Abbett Securities Trust (the "company") which operates under the supervision of
the company's Board with the advice of Lord, Abbett & Co.("Lord Abbett"), its
investment manager.

ABOUT THE FUND. This fund is a professionally managed portfolio primarily
holding securities purchased with the pooled money of investors. It strives to
reach its stated goal, although as with all funds, it cannot guarantee results.

HIGH YIELD DEBT SECURITIES, commonly known as "junk bonds," typically pay a
higher yield than investment-grade debt securities. These bonds have a higher
risk of default than investment grade bonds and their prices can be much more
volatile.

FOREIGN SECURITIES are securities primarily traded in countries outside the
United States. These securities are not subject to the same degree of regulation
and may be more volatile and less liquid than securities traded in major U.S.
markets. Other considerations include political and social instability,
expropriations, higher transaction costs, currency fluctuations, nondeductable
withholding taxes and different settlement practices.

You should read this entire prospectus, including "Other Investment Techniques,"
which concisely describes the other investment strategies, and their risks, used
by the fund.


6   The Funds




Page>


                                                               High Yield Fund

PAST PERFORMANCE

    Because the fund is new, no information regarding past performance is
    available.

FEES AND EXPENSES

    This table describes the fees and expenses that you may pay if you buy and
    hold shares of the fund.

<TABLE>
<CAPTION>

================================================================================
FEE TABLE
- --------------------------------------------------------------------------------
                                                                CLASS Y
<S>                                                              <C>
SHAREHOLDER FEES (Fees paid directly from your investment)
- --------------------------------------------------------------------------------
Maximum Sales Charge on Purchases (as a % of offering price)      none
- --------------------------------------------------------------------------------
Maximum Deferred Sales Charge (See "Purchases")                   none
- --------------------------------------------------------------------------------
ANNUAL FUND OPERATING EXPENSES (Expenses deducted from fund assets) (as a % of
average net assets)(i)
- --------------------------------------------------------------------------------
Management Fees (See "Management")                                0.60%
- --------------------------------------------------------------------------------
Other Expenses (See "Management")                                 0.25%
- --------------------------------------------------------------------------------
Total Operating Expenses                                          0.85%
- --------------------------------------------------------------------------------
</TABLE>



================================================================================
EXPENSE EXAMPLE
- --------------------------------------------------------------------------------
This example, like that in other funds' prospectuses, assumes a $10,000 initial
investment, 5% total return each year and no changes in expenses. You pay the
following expenses over the course of each period shown if you sell your shares
at the end of the period, although your actual cost may be higher or lower. You
also would pay the same expenses, assuming you kept your shares.

<TABLE>
<CAPTION>
SHARE CLASS                         1 YEAR               3 YEARS
<S>                                  <C>                  <C>
Class Y shares                       $87                  $271
- --------------------------------------------------------------------------------
</TABLE>

This example is for comparison and is not a representation of the fund's actual
expenses or returns, either past or present



MANAGEMENT FEES are payable to Lord Abbett for the fund's investment
management.

OTHER EXPENSES include fees paid for miscellaneous items such as shareholder
services and professional fees.

- --------------------------------------------------------------------------------
(i) The annual operating expenses are based on estimated expenses for the
    current fiscal year.


                                                                     The Funds 7






<PAGE>


                                                          INTERNATIONAL SERIES
GOAL/STRATEGY

    The fund's investment objective is long-term capital appreciation. Current
    income is incidental to this objective. The fund may invest in stocks that
    do not produce any income. Typically, in choosing stocks, we look for
    companies using the following process:

    QUANTITATIVE RESEARCH IS performed on a universe of foreign companies which
    guides selection of companies with strong growth potential that also sell at
    attractive prices.

    FUNDAMENTAL RESEARCH examines global trends, seeking to identify
    developments on an industry-by-industry basis and the strongest and/or best
    positioned companies ("Best of Breed") within each global industry.

    VALUATION TECHNIQUES determine the selection of the 40-60 companies with
    strong growth potential and attractive share prices that collectively form
    the final portfolio.

    Limiting the number of holdings ensures their performance is not diluted
    across too many securities. However, investors should be aware that this
    concentration could result in increased volatility.

    Investments are made in stocks of companies which are in developed or
    developing countries. Under normal circumstances, at least 80% of the total
    assets of the fund are invested in stocks of companies in at least three
    different countries outside the United States.

    Although the fund intends to invest primarily in stocks of small companies
    with market capitalization of less than $1 billion listed on stock
    exchanges, it may also invest in stocks of companies traded in
    over-the-counter markets, as well as stocks of large and middle-sized
    companies.

    The fund may temporarily reduce its stock holdings for defensive purposes in
    response to adverse market conditions and invest in domestic, Eurodollar and
    foreign short-term money market instruments. Of course, this would reduce
    any benefit from an upswing in the market.

MAIN RISKS

    The fund sometimes has above-average investment risk compared to the U.S.
    stock market since a large amount of the assets of the fund will be
    denominated or traded in foreign currencies. A change in the value of any
    foreign currency relative to the U.S. dollar results in changes in the U.S.
    dollar value of the fund's assets denominated or traded in that currency.
    The fund's performance is measured in U.S. dollars, the base currency of the
    fund. Also, securities in which the fund invests are usually not subject to
    the same degree of regulation as domestic securities and may be more
    volatile and less liquid than those of major U.S. markets.

    Lack of liquidity may affect the fund's ability to trade in large blocks of
    securities and obtain the best price. There is often less information
    available on publicly-traded companies, banks and governments than in the
    U.S., and a lack of uniform accounting standards and practices among
    countries impairs a direct comparison for stocks and bonds. Also, foreign
    securities may be traded on days when the fund does not value its shares.
    Thus, share values could be affected on days when an investor cannot buy or
    redeem fund shares.

    An investment in the fund is not a bank deposit. It is not FDIC insured or
    government endorsed. It is not a complete investment program. You could lose
    money in the fund.



WE OR THE FUND refers to Lord Abbett International Series, a portfolio of Lord
Abbett Securities Trust (the "company") which operates under the supervision of
the company's Board with the advice of Lord, Abbett & Co.("Lord Abbett"), its
investment manager.

ABOUT THE FUND. The fund is a professionally managed portfolio primarily holding
securities purchased with the pooled money of investors. It strives to reach its
stated goal, although as with all funds, it cannot guarantee results.

DEVELOPING COUNTRIES may have higher and more rapidly fluctuating inflation
rates, a higher demand for capital investment, a higher dependence on export
markets for their major industries, and a greater need to develop basic economic
infrastructures than more developed countries.

SMALL-COMPANY STOCKS are stocks of smaller companies which often are new and
less established, with a tendency to be faster-growing but more volatile and
less liquid than large company stocks.

OVER-THE-COUNTER STOCKS are usually those of smaller companies that do not meet
the listing requirements of major exchanges. Transactions are conducted by
telephone and computer network rather than on the floor of an exchange.

LARGE COMPANIES are established companies that are considered "known
quantities." Large companies often have the resources to weather economic
shifts, though they can be slower to innovate than small companies.

MID-SIZED COMPANIES usually have market capitalizations of roughly $500 million
to $5 billion.

You should read this entire prospectus, including "Other Investment Techniques,"
which concisely describes the other investment strategies, and their risks, used
by the fund.


8  The Funds




Page>


                                                          INTERNATIONAL SERIES

PAST PERFORMANCE

    The information below provides some indication of the risks of investing in
    the fund by showing changes in the fund's class Y shares' performance with a
    broad measure of market performance. Past performance is not a prediction of
    future results.


                         [GRAPH]
1998 15.8%
Best Quarter:  1st Q 91 23.78%
Worst Quarter: 3rd Q 90 (18.98)%


================================================================================
The table below shows a comparison of the fund's class Y average annual total
return to that of the Morgan Stanley European, Australasia and Far East 
Index'r' ("MSCI EAFE Index'r'"). Fund returns assume reinvestment of dividends
and distributions at Net Asset Value. All periods end on December 31, 1998.

<TABLE>
<CAPTION>

CLASS                                 1 YEAR           SINCE INCEPTION(i)
<S>                                   <C>              <C>
Y                                     15.80%           16.02%
- --------------------------------------------------------------------------------
MSCIEAFE Index 'r'(ii)                20.33%           20.33%(iii)
- --------------------------------------------------------------------------------
</TABLE>

(i)   The date of inception for class Y shares is 12/30/97.

(ii)  Performance for the unmanaged MSCIEAFE Index'r' does not reflect
      transaction costs or management fees.

(iii) This represents returns for the period 12/31/97 - 12/31/98 to correspond 
      with class Y inception date.


FEES AND EXPENSES

    This table describes the fees and expenses that you may pay if you buy and
    hold shares of the fund.

<TABLE>
<CAPTION>

================================================================================
FEE TABLE
================================================================================
                                                                CLASS Y
<S>                                                              <C>
SHAREHOLDER FEES (Fees paid directly from your investment)
- --------------------------------------------------------------------------------
Maximum Sales Charge on Purchases (as a % of offering price)     none
- --------------------------------------------------------------------------------
Maximum Deferred Sales Charge (See "Purchases")                  none
- --------------------------------------------------------------------------------
ANNUAL FUND OPERATING EXPENSES (Expenses deducted from fund assets) (as a % of
average net assets)
- --------------------------------------------------------------------------------
Management Fees (See "Management")                               0.75%
- --------------------------------------------------------------------------------
Other Expenses (See "Management")                                0.31%
- --------------------------------------------------------------------------------
Total Operating Expenses                                         1.06%
- --------------------------------------------------------------------------------
</TABLE>


================================================================================
EXPENSE EXAMPLE
================================================================================
This example, like that in other funds' prospectuses, assumes a $10,000 initial
investment, 5% total return each year and no changes in expenses. You pay the
following expenses over the course of each period shown if you sell your shares
at the end of the period, although your actual cost may be higher or lower. You
also would pay the same expenses, assuming you kept your shares.

<TABLE>
<CAPTION>

SHARE CLASS              1 YEAR    3 YEARS    5 YEARS   10 YEARS
<S>                       <C>      <C>        <C>       <C> 
Class Y shares            $108     $337       $585      $1,297
- --------------------------------------------------------------------------------
</TABLE>

This example is for comparison and is not a representation of the fund's actual
expenses or returns, either past or present.


MANAGEMENT FEES are payable to Lord Abbett for the fund's investment
management.

OTHER EXPENSES include fees paid for miscellaneous items such as shareholder 
services and professional fees.


                                                                     The Funds 9






<PAGE>



                                                                Large-Cap Series


GOAL / STRATEGY

    The Large-Cap Series' investment objective is growth of capital and growth
    of income consistent with reasonable risk. Normally, we invest in the
    undervalued common stocks of large-capitalization companies with outstanding
    equity securities having an aggregate market value of at least $1.5 billion.
    Current income is not emphasized.

     Typically, in choosing stocks, we look for companies using the following
     process:

          QUANTITATIVE RESEARCH is performed on a universe of large, seasoned
          U.S. companies to identify those which have stocks that we believe
          represent the best bargains.

          FUNDAMENTAL RESEARCH is conducted to identify current bargain-priced
          securities among the largest publicly-traded companies.

     Under normal circumstances, at least 65% of the Large-Cap Series' total
     assets will consist of investments made in large-cap companies, determined
     at the time of purchase.

     We may take a temporary defensive position by investing some of our assets
     in short-term debt securities. This could reduce the benefit from any
     upswing in the market and prevent the fund from achieving its investment
     objective.

MAIN RISKS

    The Large-Cap Series will invest in companies that appear to have good
    prospects for improvement in earnings trends or asset values. The fund will
    invest in companies on the basis of the fundamental economic and business
    factors which will affect future earnings and which the fund believes are
    the primary factors determining the future market valuation of stocks. There
    can be no assurance that stocks selected for the fund will appreciate in
    value.

    At the time of purchase, securities selected for our portfolio may be
    largely neglected by the investment community or, if widely followed, they
    may be out of favor. Our investment portfolio typically will be less
    volatile and prices will move less dramatically than the overall stock
    market. Individual-security risk is managed through broad company and
    industry diversification.

    An investment in the fund is not a bank deposit. It is not FDIC insured or
    government endorsed. It is not a complete investment program. You could lose
    money in this fund.


WE OR THE FUND refers to Lord Abbett Large-Cap Series, a portfolio of Lord
Abbett Research Fund (the "company"). The fund operates under the supervision of
the company's Board with the advice of Lord, Abbett & Co.("Lord Abbett"), its
investment manager.

ABOUT THE FUND. The fund is a professionally managed portfolio primarily holding
securities purchased with the pooled money of investors. It strives to reach its
stated goal, although as with all funds, it cannot guarantee results.

BARGAIN STOCKS are stocks of companies that appear underpriced according to
certain financial measurements of their intrinsic worth or business prospects.

LARGE COMPANIES are established companies that are considered "known
quantities." Large companies often have the resources to weather economic
shifts, though they can be slower to innovate than small companies.

SEASONED COMPANIES are usually established companies whose securities have
gained a reputation for quality with the investing public and enjoy liquidity in
the market.

You should read this entire prospectus, including "Other Investment Techniques,"
which concisely describes the other investment strategies, and their risks, used
by the fund.



10  The Funds








Page>




                                                                Large-Cap Series

PAST PERFORMANCE

    The information below provides some indication of the risks of investing in
    the fund by showing changes in the fund's class A shares' performance from
    calendar year to calendar year and by showing how the fund's average annual
    returns compare with those of a broad measure of market performance. Past
    performance is not a prediction of future results.



[GRAPHIC OMITTED]

1993      18.4%
1994      6.2%
1995      34.8%
1996      20.2%
1997      23.4%
1998      16.2%

Best Quarter: 4th Q 98 18.88%
Worst Quarter: 3rd Q 98 (12.45)%

===============================================================================
The table below shows a comparison of the fund's class A average annual total
return to that of the S&P 500'r' Index. Fund returns assume reinvestment of
dividends and distributions and payment of the maximum applicable front-end or
deferred sales charge. All periods end on December 31, 1998.

<TABLE>
<CAPTION>
CLASS                   1 YEAR      5 YEARS   SINCE INCEPTION(iv)
<S>                     <C>         <C>            <C>   
A(i)                     9.60%      18.40%         18.27%
- -------------------------------------------------------------------------------
S&P 500'r'Index(ii)     28.74%      24.08%         20.73%(iii)
- -------------------------------------------------------------------------------
</TABLE>

(i)   Because class Y shares are new, the bar chart and table show returns for
      class A shares. Returns for class Y shares will be somewhat higher,
      because class Y shares have lower expenses.
(ii)  Performance for the unmanaged S&P 500'r' Index does not reflect
      transaction costs or management fees.
(iii) This represents return for the period 6/30/92 - 12/31/98 to correspond
      with class A inception date.
(iv)  The date of inception for class A shares is 6/3/92.

FEES AND EXPENSES

    This table describes the fees and expenses that you may pay if you buy and
    hold shares of the fund.

<TABLE>
<CAPTION>
===============================================================================
Fee table
===============================================================================
                                                                    CLASS Y
<S>                                                                 <C>
SHAREHOLDER FEES (Fees paid directly from your investment)
- -------------------------------------------------------------------------------
Maximum Sales Charge on Purchases (as a % of offering price)          none
- -------------------------------------------------------------------------------
Maximum Deferred Sales Charge (See "Purchases")                       none
- -------------------------------------------------------------------------------
ANNUAL FUND OPERATING EXPENSES (Expenses deducted from fund assets)
(as a % of average net assets)
- -------------------------------------------------------------------------------
Management Fees (See "Management")                                    0.75%
- -------------------------------------------------------------------------------
Other Expenses (See "Management")                                     0.24%
- -------------------------------------------------------------------------------
Total Operating Expenses                                              0.99%
- -------------------------------------------------------------------------------
</TABLE>

===============================================================================
Expense example
===============================================================================
This example, like that in other funds' prospectuses, assumes a $10,000 initial
investment, 5% total return each year and no changes in expenses. You pay the
following expenses over the course of each period shown if you sell your shares
at the end of the period, although your actual cost may be higher or lower. You
also would pay the same expenses, assuming you kept your shares.

<TABLE>
<CAPTION>
SHARE CLASS             1 YEAR   3 YEARS     5 YEARS   10 YEARS
<S>                      <C>       <C>        <C>        <C>   
Class Y shares           $101      $315       $547       $1,215
- -------------------------------------------------------------------------------
</TABLE>
This example is for comparison and is not a representation of the fund's actual
expenses or returns, either past or present.


MANAGEMENT FEES are payable to Lord Abbett for the fund's investment
management.

OTHER EXPENSES include fees paid for miscellaneous items such as shareholder
services and professional fees.

                                                             The Funds 11






<PAGE>



                                                          Small-Cap Value Series

GOAL /STRATEGY

     The Small-Cap Value Series' investment objective is long-term capital
     appreciation. Usually we invest primarily in equity securities of smaller
     companies with market capitalizations of less than $1 billion.

     Typically, in choosing stocks, we usually look for companies using the
     following process:

          QUANTITATIVE RESEARCH is performed to evaluate various criteria,
          including the price of shares in relation to book value, sales, asset
          value, earnings, dividends and cash flow.

          FUNDAMENTAL RESEARCH is conducted to assess the dynamics of each
          company within its industry and within the economy. We evaluate the
          company's business strategies by assessing management's ability to
          execute those strategies, and by evaluating the adequacy of its
          financial resources.

     Usually, at least 65% of the Small-Cap Value Series' total assets will be
     invested in common stocks issued by smaller, less well-known companies
     (with market capitalizations of less than $1 billion) selected using
     fundamental investment analysis. The fund may invest up to 35% of its total
     assets in the securities of larger companies. Companies in which the fund
     is likely to invest may have more limited product lines, markets or
     financial resources and may lack management depth or experience as compared
     with companies with larger market capitalizations. The fund may invest up
     to 35% of its assets in foreign securities.

     We may take a temporary defensive position by investing some of our assets
     in short-term debt securities. This could reduce the benefit from any
     upswing in the market and prevent the fund from achieving its investment
     objective.

MAIN RISKS

     Small-company stocks offer significant appreciation potential. Generally,
     small companies carry more risk than larger companies. Generally, small
     companies rely on limited product lines and markets, financial resources,
     or other factors, and this may make them more susceptible to setbacks or
     economic downturns. Small-company stocks tend to be more volatile in price,
     have fewer shares outstanding and trade less frequently than large company
     stocks. Therefore, small company stocks may be subject to wider price
     fluctuations. Many small company stocks are traded over-the-counter and are
     not traded in the volume typical of stocks listed on a national securities
     exchange.

     The foreign securities in which the Small-Cap Value Series may invest are
     subject to currency fluctuations. Foreign securities markets may not be
     subject to the same degree of regulation as the U.S. markets and may be
     more volatile and less liquid than the U.S. markets. Investors should also
     be aware that the fund has the ability to invest in derivatives, the value
     of which may fluctuate greatly.

     An investment in the fund is not a bank deposit. It is not FDIC insured or
     government endorsed. It is not a complete investment program. You could
     lose money in the fund.

WE OR THE FUND refers to Lord Abbett Small-Cap Value Series, a portfolio of Lord
Abbett Research Fund, Inc. (the "company") which operates under the supervision
of the company's Board with the advice of Lord, Abbett & Co.("Lord Abbett"), its
investment manager.

ABOUT THE FUND. The fund is a professionally managed portfolio primarily holding
securities purchased with the pooled money of investors. It strives to reach its
stated goal, although as with all funds, it cannot guarantee results.

LARGE COMPANIES are established companies that are considered "known
quantities." Large companies often have the resources to weather economic
shifts, though they can be slower to innovate than small companies.

SMALL-COMPANY STOCKS are stocks of smaller companies which often are new and
less established, with a tendency to be faster-growing but more volatile than
large company stocks.

You should read this entire prospectus, including "Other Investment Techniques,"
which concisely describes the other investment strategies, and their risks, used
by the fund.


12 The Funds








Page>



                                                        SMALL-CAP VALUE SERIES

PAST PERFORMANCE

     The information below provides some indication of the risks of investing in
     the fund by showing changes in the fund's class Y shares' performance with
     a broad measure of market performance. Past performance is not a prediction
     of future results.

[GRAPHIC OMITTED]
1998      -7.2%

Best Quarter: 4th Q 98 19.56%
Worst Quarter: 3rd Q 98 (24.11)%

===============================================================================
The table below shows a comparison of the fund's class Y average annual total
return to that of the Russell 2000'r' Index. Fund returns assume reinvestment of
dividends and distributions and payment of the maximum applicable front-end or
deferred sales charge. All periods end on December 31, 1998.
<TABLE>
<CAPTION>
CLASS                                       1 YEAR         SINCE INCEPTION(i)
<S>                                           <C>                 <C>         
Y                                           (7.17)%             (6.46)%
- -------------------------------------------------------------------------------
Russell 2000'r' Index(ii)                     (2.55)%             (2.55)%(iii)
- -------------------------------------------------------------------------------
</TABLE>
(i)   The date of inception for class Y shares is 12/30/97.

(ii)  Performance for the unmanaged Russell 2000'r' Index does not reflect
      transaction costs or management fees.

(iii) This represents return for the period 12/31/97 - 12/31/98 to correspond 
      with class Y inception date.

===============================================================================
Fees and expenses

     This table describes the fees and expenses that you may pay if you buy and
hold shares of the fund.
<TABLE>
<CAPTION>
===============================================================================
Fee table
===============================================================================
                                                            CLASS Y
<S>                                                           <C>
SHAREHOLDER FEES (Fees paid directly from your investment)
- -------------------------------------------------------------------------------
Maximum Sales Charge on Purchases (as a % of offering price)  none
- -------------------------------------------------------------------------------
Maximum Deferred Sales Charge (See "Purchases")               none
- -------------------------------------------------------------------------------
ANNUAL FUND OPERATING EXPENSES (Expenses deducted from fund assets) (as a % of
average net assets)
- -------------------------------------------------------------------------------
Management Fees (See "Management")                            0.75%
- -------------------------------------------------------------------------------
Other Expenses (See "Management")                             0.24%
- -------------------------------------------------------------------------------
Total Operating Expenses                                      0.99%
- -------------------------------------------------------------------------------
</TABLE>


===============================================================================
Expense example
===============================================================================
This example, like that in other funds' prospectuses, assumes a $10,000 initial
investment, 5% total return each year and no changes in expenses. You pay the
following expenses over the course of each period shown if you sell your shares
at the end of the period, although your actual cost may be higher or lower. You
also would pay the same expenses, assuming you kept your shares.
<TABLE>
<CAPTION>
SHARE CLASS                  1 YEAR      3 YEARS       5 YEARS     10 YEARS
<S>                            <C>        <C>           <C>          <C>   
Class Y shares                 $101       $315          $547         $1,215
- -------------------------------------------------------------------------------
</TABLE>

This example is for comparison and is not a representation of the fund's actual
expenses or returns, either past or present.

MANAGEMENT FEES are payable to Lord Abbett for the fund's investment
management.

OTHER EXPENSES include fees paid for miscellaneous items such as shareholder
services and professional fees.

                                                                    The Funds 13





<PAGE>



                                Your Investment

PURCHASES

    CLASS Y SHARES. Class Y shares are purchased at Net Asset Value ("NAV") with
    no sales charge of any kind. The NAV of our shares is calculated every
    business day as of the close of the New York Stock Exchange. Our shares are
    continuously offered. The offering price is based on NAV per share next
    determined after we receive your order submitted in proper form. We reserve
    the right to withdraw all or part of the offering made by this prospectus,
    or to reject any purchase order. We also reserve the right to waive or
    change minimum investment requirements. All purchase orders are subject to
    our acceptance and are not binding until confirmed or accepted in writing.

    WHO MAY INVEST? Eligible purchasers of Class Y shares include: (i) certain
    authorized brokers, dealers, registered investment advisers or other
    financial institutions who either (a) have an arrangement with Lord Abbett
    Distributor in accordance with certain standards approved by Lord Abbett
    Distributor, providing specifically for the use of our Class Y shares in
    particular investment products made available for a fee to clients of such
    brokers, dealers, registered investment advisers or other financial
    institutions, or (b) charge an advisory consulting or other fee for their
    services and buy shares for their own accounts or the accounts of their
    clients ("Mutual Fund Advisory Programs"); (ii) the trustee or custodian
    under any deferred compensation or pension or profit-sharing plan or payroll
    deduction IRA established for the benefit of the employees of any company
    with an account(s) in excess of $10 million managed by Lord Abbett or its
    sub-advisors on a private-advisory-account basis; (iii) institutional
    investors, including retirement plans, companies, foundations, trusts,
    endowments and other entities where the total amount of potential investable
    assets exceeds $50 million that were not introduced to Lord Abbett by
    persons associated with a broker or dealer primarily involved in the retail
    security business; and (iv) members of the companys' Boards of Directors or
    Trustees, Officers of the funds and Partners of Lord Abbett.
    Additional payments may be made by Lord Abbett out of its
    own resources with respect to certain of these sales.

    HOW MUCH MUST YOU INVEST? You may buy our shares through any independent
    securities dealer having a sales agreement with Lord Abbett Distributor, our
    exclusive selling agent. Place your order with your investment dealer or
    send the money to the fund you selected (P.O. Box 419100, Kansas City,
    Missouri 64141). The minimum initial investment is $1 million except for
    Mutual Fund Advisory Programs, Directors, Trustees or Officers
    of the funds and Partners of Lord Abbett, which are subject to
    no minimum. This offering may be suspended, changed or withdrawn by Lord 
    Abbett Distributor which reserves the right to reject any order.  When 
    purchases are made by check, redemptions will not be allowed until the fund 
    or the transfer agent is advised that the check has cleared,
    which may take up to 15 calendar days.
   
    BUYING SHARES THROUGH YOUR DEALER. Orders for shares received by a fund
    prior to the close of the NYSE, or received by dealers prior to such close
    and received by Lord Abbett Distributor prior to the close of its business
    day, will be confirmed at NAV effective at such NYSE close. Orders received
    by dealers after the NYSE closes and received by Lord Abbett Distributor in
    proper form prior to the close of its next business day are executed at the
    NAV effective as of the close of the NYSE on that next business day. The
    dealer is responsible for the timely transmission of orders to Lord Abbett
    Distributor. A business day is a day on which the NYSE is open for trading.

    BUYING SHARES BY WIRE. To open an account, call 800-821-5129 Ext. 34028,
    Institutional Trade Dept., to set up your account and to arrange a wire
    transaction. Wire to: United Missouri Bank of Kansas City, N.A., Routing
    number - 101000695, bank account number: 9878002611, FBO: (account name) and
    (your Lord Abbett account number). Specify

NAV per share is calculated each business day at the close of regular trading on
the New York Stock Exchange ("NYSE"). Each fund is open on those business days
when the NYSE is open. Purchases and sales of fund shares are executed at the
NAV next determined after the fund receives your order. In calculating NAV,
securities for which market quotations are available are valued at those
quotations. Securities for which such quotations are not available are valued at
fair value under procedures approved by the Board.

LORD ABBETT DISTRIBUTOR LLC ("Lord Abbett Distributor") acts as agent for the
funds to work with investment professionals that buy and/or sell shares of the
funds on behalf of their clients. Generally, Lord Abbett Distributor does not
sell fund shares directly to investors.



14  Your Investment




Page>



     the complete name of the fund of your choice, note Class Y shares and
     include your new account number and your name. To add to an existing
     account, wire to: United Missouri Bank of Kansas City, N.A., routing number
     - 101000695, bank account number: 9878002611, FBO: (account name) and (your
     Lord Abbett account number). Specify the complete name of the fund of your
     choice, note Class Y shares and include your account number and your name.

REDEMPTIONS

     BY BROKER. Call your investment professional for directions on how to
     redeem your shares.

     BY TELEPHONE. To obtain the proceeds of a redemption of $50,000 or less
     from your account, you or your representative can call the fund at
     800-821-5129.

     BY MAIL. Submit a written redemption request indicating, the name(s) in
     which the account is registered, the fund's name, the class of shares, your
     account number, and the dollar value or number of shares you wish to sell.

     Include all necessary signatures. If the signer has any Legal Capacity, the
     signature and capacity must be guaranteed by an Eligible Guarantor. Certain
     other legal documentation may be required. For more information regarding
     proper documentation call 800-821-5129.

     Normally a check will be mailed to the name and address in which the
     account is registered (or otherwise according to your instruction) within
     three business days after receipt of your redemption request. Your account
     balance must be sufficient to cover the amount being redeemed or your
     redemption order will not be processed. Under normal circumstances, the
     fund may suspend redemptions, or postpone payment for more than seven
     days, as permitted by federal securities laws.

     BY WIRE. In order to receive funds by wire, our servicing agent must have
     the wiring instructions on file. To verify that this feature is in place,
     call 800-821-5129 Ext. 34028, Institutional Trading Dept. Minimum wire:
     $1,000. Your wire redemption request must be received by your fund before
     the close of the NYSE for money to be wired on the next business day.

DISTRIBUTIONS AND TAXES

    Each fund pays its shareholders dividends from its net investment income,
    and distributes any net capital gains that it has realized. Each fund
    expects to pay income dividends (quarterly, for the Affiliated Fund; monthly
    for the High Yield Fund; semi-annually for the Large-Cap Series; and
    annually for Growth Opportunities Fund, International Series and Small-Cap
    Value Series) and capital gain distributions, if any, once a year. Your
    distributions will be reinvested in your fund unless you instruct the fund
    to pay them to you in cash.

IMPORTANT INFORMATION. You may be subject to a $50 penalty under the Internal
Revenue Code if you do not provide a correct taxpayer identification number
(Social Security Number for individuals) or make certain required
certifications. In addition, we may be required to withhold from your account
and pay to the U.S. Treasury 31% of any redemption proceeds and any dividend or
distribution from your account.

ELIGIBLE GUARANTOR is any broker or bank that is a member of the Medallion Stamp
Program. Most major securities firms and banks are members of this program. A
NOTARY PUBLIC IS NOT AN ELIGIBLE GUARANTOR.

TAXES ON TRANSACTIONS. The chart at left also can provide a "rule of thumb"
guide for your potential U.S. federal income tax liability when selling or
exchanging fund shares. The second row, "Short-term capital gains," applies to
fund shares sold within 12 months of purchase. The third row, "Long-term capital
gains," applies to shares held for more than 12 months.

Starting January 1, 2001, sales of securities held for more than five years will
be taxed at special lower rates.


                                                             Your Investment  15






<PAGE>




     The tax status of distributions is the same regardless of how long they
     have been in the fund or whether distributions are reinvested or paid in
     cash. In general, distributions are taxable as follows:

<TABLE>
<CAPTION>
================================================================================
Federal Taxability Of Distributions

Type of           Tax rate for             Tax rate for 28%
distribution      15% bracket               bracket and above
===============================================================================
<S>               <C>                      <C>
INCOME            Ordinary                 Ordinary
DIVIDENDS         Income Rate              Income Rate
- -------------------------------------------------------------------------------
SHORT-TERM        Ordinary                 Ordinary
CAPITAL GAINS     Income Rate              Income Rate
- -------------------------------------------------------------------------------
LONG-TERM
CAPITAL GAINS     10%                      20%
- -------------------------------------------------------------------------------
</TABLE>

     Except in tax-advantaged accounts, any sale or exchange of fund shares may
     be a taxable event.

     ANNUAL INFORMATION - Information concerning the tax treatment of dividends
     and other distributions will be mailed to shareholders each year. Each fund
     will also provide annually to its shareholders information regarding the
     source of dividends and distributions of capital gains paid by that fund.
     Because everyone's tax situation is unique, you should consult your tax
     adviser regarding the treatment of those distributions under the federal,
     state and local tax rules that apply to you, as well as the tax
     consequences of gains or losses from the redemption or exchange of your
     shares.

SERVICES FOR FUND INVESTORS

AUTOMATIC SERVICES

     We offer the following shareholder services:

     TELEPHONE EXCHANGE PRIVILEGE. Class Y shares may be exchanged without a
     service charge for Class Y shares of any Eligible Fund among the Lord
     Abbett-sponsored funds. ACCOUNT STATEMENTS. Every Lord Abbett investor
     automatically receives quarterly account statements.

     HOUSEHOLDING. Shareholders with the same last name and address will receive
     a single copy of a prospectus and an annual or semi-annual report, unless
     additional reports are specifically requested in writing to the funds.

     ACCOUNT CHANGES. For any changes you need to make to your account, consult
     your investment professional or call the fund at 800-821-5129.

     SYSTEMATIC EXCHANGE. You or your investment professional can establish a
     schedule of exchanges between the same classes of any Eligible Fund.

MANAGEMENT

     The funds' investment adviser is Lord, Abbett & Co., 767 Fifth Avenue, New
     York, NY 10153-0203. Founded in 1929, Lord Abbett manages one of the
     nation's oldest mutual fund complexes, with over $30 billion in more than
     35 mutual fund portfolios and other advisory accounts. For more information
     about the services Lord Abbett provides to the funds, see the Statement of
     Additional Information.

     Each fund pays Lord Abbett a monthly fee based on average daily net assets
     for each month. For each of the fund's respective fiscal year end, the
     management fee paid to Lord Abbett was at an annual rate of .31 of 1% for
     Affiliated Fund and .75 of 1% for International Series, Large-Cap
     Series and Small-Cap Series.  Lord Abbett waived its management fee and
     subsidized other expenses (except for 12b-1 fees) for Growth Opportunities
     Fund.  High Yield Fund commenced operations subsequent to the November 30,
     1998 fiscal year end.  Each fund pays all expenses not expressly assumed
     by Lord Abbett.

TELEPHONE TRANSACTIONS. You have this privilege unless you refuse it in writing.
For your security, telephone transaction requests are recorded. We will take
measures to verify the identity of the caller, such as asking for your name,
account number, social security or taxpayer identification number and other
relevant information. Each fund will not be liable for following instructions
communicated by telephone that it reasonably believes to be genuine.

Transactions by telephone may be difficult to implement in times of drastic
economic or market change.

Exchanges by telephone should not be used to take advantage of short-term swings
in the market. Each fund reserves the right to limit or terminate this privilege
for any shareholder making frequent exchanges or abusing the privilege and may
revoke the privilege for all shareholders upon 60 days' written notice.



16  Your Investment










<PAGE>




     

     Lord Abbett uses teams of portfolio managers and analysts acting together
     to manage the funds' investments.

     AFFILIATED FUND. Thomas Hudson Jr., Partner of Lord Abbett, heads the
     fund's team, the other senior members of which are Robert G. Morris,
     Partner of Lord Abbett, and Eli M. Salzman. Messrs. Hudson and Morris have
     been with Lord Abbett for more than five years. Mr. Salzman joined Lord
     Abbett in 1997; prior to that he was a Vice President with Mutual of
     America Capital Corp. from 1996 to 1997 and a Vice President with Mitchell
     Hutchins Asset Management, Inc. from 1986 to 1996.

     GROWTH OPPORTUNITIES FUND. Stephen J. McGruder, Partner of Lord Abbett,
     heads the fund's team, the other senior member of which is Frederic D. Ohr.
     Mr. McGruder has been with Lord Abbett since 1995. Prior to joining Lord
     Abbett, Mr. McGruder served as Vice President of Wafra Investment Advisory
     Group, a private investment company from 1988 to 1995. Mr. Ohr joined Lord
     Abbett in 1998. Before joining Lord Abbett, Mr. Ohr was a Vice President
     and Senior Analyst with Chase Asset Management from 1991 to 1998.

     HIGH YIELD FUND. Christopher J. Towle, Partner of Lord Abbett, heads the
     fund's team, the other senior members of which are Michael Goldstein,
     Richard Szaro and Thomas Baade. Messrs. Towle and Szaro joined Lord Abbett
     in 1988 and 1983, respectively. Mr. Goldstein has been with Lord Abbett
     since April 1997. Before joining Lord Abbett, Mr. Goldstein was a bond
     trader for Credit Suisse BEA Associates from August 1992 through April
     1997. Mr. Baade joined Lord Abbett in 1998; prior to that he was a credit
     analyst with Greenwich Street Advisors.

     INTERNATIONAL SERIES. Lord Abbett has entered into an agreement with
     Fuji-Lord Abbett International Ltd. (the "Sub-Adviser"), under which the
     Sub-Adviser provides Lord Abbett with advice regarding the International
     Fund's assets. Lord Abbett pays the Sub-Adviser a monthly fee equal to one
     half of Lord Abbett's fee.

     Christopher J. Taylor is Managing Director of the Sub-Adviser and heads the
     fund's team, the other senior member of which is Simon Steele, U.K. Equity
     Fund Manager. Mr. Steele joined the Sub-Adviser in 1996
     and previously was responsible for the WH Smith Pension Trust's U.K.
     Equities, as well as the whole fund's International Asset allocation. Mr.
     Taylor has been employed by the Sub-Adviser since 1987.

     LARGE-CAP SERIES. Robert G. Morris, Partner of Lord Abbett, heads the
     fund's team, the other senior members of which are W. Thomas Hudson, Jr.,
     Partner of Lord Abbett, and Eli M. Salzman. Messrs. Morris and Hudson have
     been with Lord Abbett for more than five years. Mr. Salzman joined Lord
     Abbett in 1997; prior to that he was a Vice President with Mutual of
     America Capital Corp. from 1996 to 1997, and a Vice President at Mitchell
     Hutchins Asset Management, Inc. from 1986 to 1996.

     SMALL-CAP VALUE SERIES. Robert P. Fetch, Partner of Lord Abbett, heads the
     fund's team, the other senior member of which is Gregory M. Macosko. Mr.
     Fetch joined Lord Abbett in 1995; prior to that, he was was a Managing
     Director of Prudential Investment Advisors from 1983 to 1995. Mr. Macosko
     joined Lord Abbett in 1996; prior to that he was an Equity Analyst with
     Quest Advisory Service from 1991 to 1996.


                                                             Your Investment  17






Page>


                              For More Information

OTHER INVESTMENT TECHNIQUES

     This section describes some of the investment techniques that might be used
     by the funds, and their risks.

     ADJUSTING INVESTMENT EXPOSURE. Each fund may, but is not required to, use
     various strategies to change its investment exposure to adjust to changing
     security prices, interest rates, currency exchange rates, commodity prices
     and other factors. Each fund may use these transactions to change the risk
     and return characteristics of each fund's portfolio. If we judge market
     conditions incorrectly or use a strategy that does not correlate well with
     the fund's investments, it could result in a loss, even if we intended to
     lessen risk or enhance returns. These transactions may involve a small
     investment of cash compared to the magnitude of the risk assumed and could
     produce disproportionate gains or losses. Also, these strategies could
     result in losses if the counterparty to a transaction does not perform as
     promised.

     BORROWING. Each fund may borrow from banks. If a fund borrows money, its
     share price may be subject to greater fluctuation until the borrowing is
     paid off. Each fund may borrow only for temporary or emergency purposes,
     and not in an amount exceeding 331/3% of its total assets.

     CLOSED-END INVESTMENT COMPANIES. Each of the Growth Opportunities Fund,
    International Series, Large-Cap Series and Small-Cap Value Series may invest
     in shares of closed-end investment companies if bought in the primary or
     secondary market with a fee or commission no greater than the customary
     broker's commission. Each of the Small-Cap Value Series and Large-Cap
     Series may not invest more than 5% of its assets in closed-end investment
     companies.

     DIVERSIFICATION. Each fund is a diversified fund, which means that with
     respect to 75% of its total assets, it will not purchase a security if, as
     a result, more than 5% of the fund's total assets would be invested in
     securities of a single issuer or the fund would hold more than 10% of the
     outstanding voting securities of the issuer. This does not apply to U.S.
     government securities.

     DEPOSITORY RECEIPTS. The International Series may invest in Depository
     Receipts which are securities, typically issued by a financial institution
     (a "depository"), that evidence ownership interests in a security or a pool
     of securities issued by a foreign issuer (the "underlying issuer") and
     deposited with the depository. Generally, Depository Receipts in registered
     form are designed for use in U.S. securities markets and Depository
     Receipts in bearer form are designed for use in securities markets outside
     the United States. The fund may invest in sponsored and unsponsored
     Depository Receipts. For purposes of the International Fund's investment
     policies, investments in Depository Receipts will be deemed to be
     investments in the underlying securities.

     EQUITY SECURITIES. The High Yield Fund may also invest up to 20% of its
     total assets in equity securities. These include common stocks, preferred
     stocks, convertible securities, warrants, and similar instruments. Common
     stocks, the most familiar type, represent an ownership interest in a
     corporation. Although equity securities have a history of long-term growth
     in their value, their prices fluctuate based on changes in a company's
     financial condition and on market and economic conditions.

     FINANCIAL FUTURES TRANSACTIONS. A financial futures transaction is an
     exchange-traded contract to buy or sell a standard quantity and quality of
     a financial instrument or index at a specific future date and price. The
     High Yield Fund, Growth Opportunities Fund,


18  For More Information









<PAGE>



     International Series and Large-Cap Series may purchase and sell futures
     contracts and options thereon. The High Yield Fund may not invest more than
     5% of its assets in such transactions. The Growth Opportunities Fund,
     International Fund and Large-Cap Series will not enter into any futures
     contracts or options thereon, if the aggregate market value of the
     securities covered by such contracts exceeds 50% of each such fund's total
     assets.

     FOREIGN CURRENCY HEDGING TECHNIQUES. Both the International Series and the
     Small-Cap Value Series may use Foreign Currency Hedging Techniques.
     Although these two funds do not normally engage in extensive currency
     hedging, they may use currency forwards and options to hedge the risk to
     the portfolio if they expect that foreign exchange price movements will be
     unfavorable for U.S. investors. Generally, these instruments allow a fund
     to lock in a specified exchange rate for a period of time. If the fund's
     forecast proves to be wrong, such a hedge may cause a loss. Also, it may be
     difficult or impractical to hedge currency risk in many emerging countries.
     The underlying funds generally will not enter into a forward contract with
     a term greater than one year. Under some circumstances, a fund may commit a
     substantial portion or the entire value of its portfolio to the completion
     of forward contracts. Although such contracts will be used primarily to
     attempt to protect the fund from adverse currency movements, their use
     involves the risk Lord Abbett will not accurately predict currency
     movements, and the fund's return could be reduced.

     FOREIGN SECURITIES. The International Series invests primarily in foreign
     securities; the Growth Opportunities Fund and Small-Cap Value Series will
     limit their investments in foreign securities to 35% of their total assets.
     The Affiliated Fund and High Yield Fund will limit their investments in
     foreign securities to 10% and 20%, respectively, of their total assets. The
     Large-Cap Series may invest up to 10% in foreign securities. These
     securities are not subject to the same degree of regulation and may be more
     volatile and less liquid than securities traded in major U.S. markets.
     Foreign portfolio securities may trade on days when a fund does not value
     them. Fund share prices could be affected on days an investor cannot
     purchase or sell shares. Other risks include less information on public
     companies, banks and governments; political and social instability;
     expropriations; higher transaction costs; currency fluctuations;
     nondeductable withholding taxes and different accounting and settlement
     practices.

     ILLIQUID SECURITIES. These securities include those that are not traded on
     the open market or that trade irregularly or in very low volume. They may
     be difficult or impossible to sell at the time and price the fund would
     like. Each fund may invest up to 15% of its assets in illiquid securities.

   INVESTMENT FUNDS. The International Series may invest (normally not more than
     5% of the fund's total assets) in investment funds. Some emerging countries
     have laws and regulations that currently preclude direct foreign investment
     in the securities of their companies. However, indirect foreign investment
     in the securities of such countries is permitted through investment funds
     which have been specifically authorized. If the fund invests in such
     investment funds, the fund's shareholders will bear not only their
     proportionate share of the expenses of the fund (including operating
     expenses and the fees of Lord Abbett), but also will indirectly bear
     similar expenses of the underlying investment funds.

     OPTIONS TRANSACTIONS. A put option on securities gives the purchaser, in
     return for a premium, the right, for a specified period of time, to sell
     the securities subject to the option to the writer (seller) of the put at
     the specified exercise price. The writer of the put option, in return for
     the premium, has the obligation, upon exercise of the option, to acquire
     the securities underlying the option at the exercise price.

     A call option on securities gives the purchaser, in return for a premium
     paid, the right for a specified period of time to purchase the securities
     subject to the option at a specified price


                                                        For More Information  19




Page>




     (the "exercise price" or "strike price"). The writer of a call option, in
     return for the premium, has the obligation, upon exercise of the option, to
     deliver, depending upon the terms of the option contract, the underlying
     securities to the purchaser upon receipt of the exercise price.

     Options on stock indices are similar to options on equity securities except
     that, rather than the right to take or make delivery of stock at a
     specified price, an option on a stock index gives the holder the right, in
     return for a premium paid, to receive, upon exercise of the option, an
     amount of cash if the closing level of the stock index upon which the
     option is based is greater than, in the case of a call, or less than, in
     the case of a put, the exercise price of the option. The writer of an index
     option, in return for a premium, is obligated to pay the amount of cash due
     upon exercise of the option.

     The writer of a put option might be obligated to purchase underlying
     securities for more than their current market value.

     When a fund writes a call option, it gives up the potential for gain on the
     underlying securities in excess of the exercise price of the option during
     the period that the option is open. The Small-Cap Value Series, High Yield
     Fund and Growth Opportunities Fund may purchase and write put and call
     options on equity securities or stock indices that are traded on national
     securities exchanges.

     The Growth Opportunities Fund may purchase foreign currency put options and
     write foreign currency call options on national securities exchanges or
     national over-the-counter ("OTC") markets. OTC options are generally less
     liquid and involve issuer credit risk. The premiums paid for Growth
     Opportunities Fund's foreign currency put options will not exceed 5% of the
     net assets of the fund. Unlisted options, together with other illiquid
     securities, may comprise no more than 15% of the Growth Opportunities
     Fund's net assets. The face value of currency call option writing or
     cross-hedging may not exceed 90% of the value of the securities denominated
     in such currency (a) invested in by the Growth Opportunities Fund to cover
     such call writing or (b) to be crossed.

     The Small-Cap Value Series and the Growth Opportunities Fund may only write
     covered put options to the extent that cover for such options does not
     exceed 25% of each fund's net assets. Each fund will not purchase an option
     if, as a result of such purchase, more than 20% of its total assets would
     be invested in premiums for such options. In addition, the Growth
     Opportunities Fund may write covered call options on securities having an
     aggregate market not to exceed 5% of that fund's assets.

     Each fund including the Large-Cap Series, will write (sell) only "covered"
     options. This means that the funds may only sell the call options on
   securities which the funds own. The Affiliated Fund and International Series
     will only write "covered" call options on securities having an aggregate
     market value not to exceed 10% of the Affiliated Fund's assets or 5% of the
     International  and Large-Cap Series' gross assets. The High Yield
     Fund will only write covered call options and secured put options on
     securities having an aggregate market value not to exceed 25% of the High
     Yield Fund's assets.

     PORTFOLIO SECURITIES LENDING. Each fund may lend securities to
     broker-dealers and financial institutions, as a means of earning income.
     This practice could result in a loss or delay in recovering a fund's
     securities, if the borrower defaults. The Affiliated Fund, High Yield Fund
     and International Series will limit their securities loans to 30% of their
     total assets, while the Growth Opportunities Fund, Large-Cap Series and
     Small-Cap Value Series will limit their securities loans to 5% of their
     total assets.

     REPURCHASE AGREEMENTS. Each fund may enter into Repurchase Agreements. In a
     Repurchase Agreement, a fund buys a security at one price from a
     broker-dealer or financial institution and simultaneously agrees to sell
     the same security back to the


20  For More Information







<PAGE>



     same party at a higher price in the future. If the other party to the
     agreement defaults or becomes insolvent, a fund could lose money.

     RIGHTS AND WARRANTS. Each of the Growth Opportunities Fund, International
   Series, Large-Cap Series and Small-Cap Value Series may invest in rights and
     warrants to purchase securities.

     Rights represent a privilege offered to holders of record of issued
     securities (usually on a pro-rata basis) for additional securities of the
     same class, of a different class, or of a different issuer, as the case may
     be. Warrants represent the privilege to purchase securities at a stipulated
     price and are usually valid for several years. Rights and warrants
     generally do not entitle a holder to dividends or voting rights with
     respect to the underlying securities, nor do they represent any rights in
     the assets of the issuing company. The value of a right or warrant may not
     necessarily change with the value of the underlying securities, and rights
     and warrants cease to have value if they are not exercised prior to their
     expiration date.

     RULE 144A SECURITIES. Each fund may invest in Rule 144A securities, which
     are securities determined by the Board to be liquid pursuant to Securities
     and Exchange Commission Rule 144A (the "Rule"). Under the Rule, a
     qualifying unregistered security may be resold to a qualified institutional
     buyer without registration and without regard to whether the seller
     originally purchased the security for investment. A substantial part of the
     lower-rated debt market consists of Rule 144A securities, many of which are
     registered within a few months of their purchases. Investments in Rule 144A
     securities initially determined to be liquid could have the effect of
     diminishing the level of a fund's liquidity during periods of decreased
     market interest in such securities.

     STOCK INDEX FUTURES. A stock index futures contract is an agreement in
     which one party agrees to deliver to another an amount of cash equal to a
     specific dollar amount times the difference between a specific stock index
     at the close of the last trading day of the contract and the price at which
     the agreement is made. No physical delivery of the underlying stocks in the
     index is made.

     Participation in the options or futures markets involves investment risks
     and transaction costs to which the Small-Cap Value Series would not be
     subject absent the use of these strategies. If the Small-Cap Value Series
     management's prediction of movement in the direction of the securities
     markets is inaccurate, the adverse consequences to the fund may leave it in
     a worse position than if such strategies were not used. Risks inherent in
     the use of options and stock index futures include: (1) dependence on
     management's ability to predict correctly movements in the direction of
     specific securities being hedged or the movement in stock indices; (2)
     imperfect correlation between the price of options and stock index futures
     and options thereon and movements in the prices of the securities being
     hedged; (3) the fact that skills needed to use these strategies are
     different from those needed to select portfolio securities; (4) the
     possible absence of a liquid secondary market for any particular instrument
     at any time; (5) the possible need to defer closing out certain hedged
     positions to avoid adverse tax consequences; and (6) daily limits on price
     variance for a futures contract or related options imposed by certain
     futures exchanges and boards of trade may restrict transactions in such
     securities on a particular day.

     The Small-Cap Value Series may not purchase or sell stock index futures if,
     immediately after a purchase or sale, more than one-third of its net assets
     would be hedged. In addition, except in the case of a call written and held
     on the same index, the Small-Cap Value Series will write call options on
     indices or sell stock index futures only if the amount resulting from the
     multiplication of the then current level of the index (or indices) upon


                                                        For More Information  21








<PAGE>




     which the options or futures contract(s) is based, the applicable
     multiplier(s), and the number of futures or options contracts which would
     be outstanding would not exceed one-third of the value of the Small-Cap
     Value Series' net assets.

     The Small-Cap Value Series' ability to enter into stock index futures and
     listed options is limited by certain tax requirements in order to qualify
     as a regulated investment company.

   WHEN-ISSUED OR DELAYED DELIVERY SECURITIES. Each of the International Series,
     Small-Cap Value Series and Growth Opportunities Fund may purchase or sell
     securities with payment and delivery taking place as much as a month or
     more later. A fund would do this in an effort to buy or sell the securities
     at an advantageous price and yield. The securities involved are subject to
     market fluctuation and no interest accrues to the purchaser during the
     period between purchase and settlement. At the time of delivery of the
     securities, their market value may be less than the purchase price. Also,
     if a fund commits a significant amount of assets to when-issued or delayed
     delivery transactions, it may increase the volatility of the fund's
     portfolio.

GLOSSARY OF SHADED TERMS

     ELIGIBLE FUND. An Eligible Fund is any Lord Abbett-sponsored fund offering
     class Y shares.

     EURODOLLAR. U.S. currency held in banks outside the United States, mainly
     in Europe, and commonly used for settling international transactions. Some
     securities are issued in Eurodollars--that is, with a promise to pay
     interest in dollars deposited in foreign bank accounts.

     LEGAL CAPACITY. This term refers to the authority of an individual to act
     on behalf of an entity or other person(s). For example, if a redemption
     request were to be made on behalf of the estate of a deceased shareholder,
     John W. Doe, by a person (Robert A. Doe) who has the legal capacity to act
     for the estate of the deceased shareholder because he is the executor of
     the estate, then the request must be executed as follows: Robert A. Doe,
     Executor of the Estate of John W. Doe. That signature using that capacity
     must be by an Eligible Guarantor.

     To give another example, if a redemption request were to be made on behalf
     of the ABC Corporation by a person (Mary B. Doe) who has the legal capacity
     to act on behalf of the Corporation, because she is the president of the
     Corporation, the request must be executed as follows: ABC Corporation by
     Mary B. Doe, President. That signature using that capacity must be
     guaranteed by an Eligible Guarantor (see example in right column).

     MUTUAL FUND ADVISORY PROGRAM. Certain unaffiliated authorized brokers,
     dealers, registered investment advisers or other financial institutions who
     either (a) have an arrangement with Lord Abbett Distributor in accordance
     with certain standards approved by Lord Abbett Distributor, providing
     specifically for the use of our shares (and sometimes providing for
     acceptance of orders for such shares on our behalf) in particular
     investment products made available for a fee to clients of such brokers,
     dealers, registered investment advisers and other financial institutions,
     or (b) charge an advisory, consulting or other fee for their services and
     buy shares for their own accounts or the accounts of their clients.

RECENT PERFORMANCE

     AFFILIATED FUND. During the past fiscal year, the stock market and the fund
     enjoyed returns above historical averages due to an environment of solid
     economic growth, low inflation and strong corporate profit gains.
     Throughout most of the period, the portfolio has been evenly diversified,
     but with a moderate overweighting in financial stocks. Further-more, we
     have shifted our focus within this group of stocks towards insurance
     companies,


GUARANTEED SIGNATURE. An acceptable form of guarantee would be as follows:

   In the case of the estate -

      Robert A. Doe
      Executor of the Estate of
      John W. Doe
   
      [Date]

         SIGNATURE GUARANTEED
         MEDALLION GUARANTEED
          NAME OF GUARANTOR


          [SIGNATURE ILLEGIBLE]
- ------------------------------------------------
                            AUTHORIZED SIGNATURE
(960)                            X 9 0 0 3 4 7 0
SECURITIES TRANSFER AGENTS MEDALLION PROGRAM'TM'
                                              SR

   In the case of the corporation - ABC Corporation

      Mary B. Doe

      By Mary B. Doe, President
  
     [Date]

         SIGNATURE GUARANTEED
         MEDALLION GUARANTEED
          NAME OF GUARANTOR


          [SIGNATURE ILLEGIBLE]
- ------------------------------------------------
                            AUTHORIZED SIGNATURE
(960)                            X 9 0 0 3 4 7 0
SECURITIES TRANSFER AGENTS MEDALLION PROGRAM'TM'
                                              SR



22  For More Information










<PAGE>




     which are benefiting from industry-wide consolidation and cost-cutting
     efforts.

     GROWTH OPPORTUNITIES FUND. During the first half of the fund's fiscal year,
     stocks performed strongly, followed by sizable downdrafts during the summer
     months, and a subsequent recovery from late September through November. We
     believe much of the volatility was due to investors' growing reluctance to
     bear risk in response to economic and political uncertainties in Japan, the
     Pacific Rim, Russia and other emerging markets, and the impact those
     uncertainties might have on future U.S. corporate earnings.

     A series of rate cuts initiated by the U.S. Federal Reserve Board helped to
     ease investor concern later in the fund's fiscal year. As a more optimistic
     view of the global economies emerged, stocks rallied with most sectors
     participating in the upswing.

     HIGH YIELD FUND. The commencement of operations for this fund was after
     November 30, 1998. Consequently, there is no recent performance information
     available for the fund's most recent fiscal year.

     INTERNATIONAL SERIES. The fund's investment strategy consisted of holding a
     relatively concentrated portfolio, comprised of a restricted number of
     markets and stocks of industry-leading companies. The stocks were bought at
     low valuation levels, and in line with our investment philosophy, which
     means that we used the recent period of market weakness to steadily add to
     existing positions.

     In addition, the fund was not invested in the emerging and Far Eastern
     markets, but was instead concentrated primarily in Europe and Canada. This,
     in addition to the fund's superior stock selection, contributed to the last
     fiscal year's high performance. Throughout this period, portfolio turnover
     remained low. We used new purchase monies to add to our existing holdings
     during this period. As a result, there was very little actual change to our
     list.

     LARGE-CAP SERIES. The fund's strong absolute returns for the fiscal year
     ended November 30, 1998 were due, in part, to our decision to maintain an
     overweighting of financial company holdings. After a weak start, these
     holdings benefited from attractive valuations relative to their expected
     earnings and from ongoing industry consolidations.

     Favorable earnings developments and merger activity among pharmaceutical
     and health care holdings also enhanced the portfolio's performance, as did
     our particular stock selections in the energy sector. Interim price
     weakness among technology companies created the opportunity to add
     technology stocks to the portfolio, as we anticipated that this industry
     would continue to perform well into 1998. The announcement of the
     Exxon-Mobil merger had a positive impact on the fund's performance,
     although, overall, companies in the electric utilities and energy sectors
     did not perform well during the period.

     We believe that the anticipated environment of continued low inflation,
     modest economic growth and benign interest rates, combined with S&P 500'r'
     Index's flat projected earnings growth in 1999, will favor the fund's
     research-driven value investment strategy in the years ahead.

     SMALL-CAP VALUE SERIES. In a year of challenge for small-cap stocks, our
     management team focused on various industry sectors. For example, our
     overweighting of companies in the technology and consumer non-cyclical
     industries, such as apparel and general retailers, which moved ahead of the
     broad market early in the year and then again during the fourth quarter,
     added significant value to the portfolio. On the other hand, we reduced our
     exposure to industrial companies late in the year when they continued to
     struggle despite improved market conditions.

     We believe the stage is set for a small-cap rebound now that these
     companies are selling at historically low prices relative to larger
     companies and that our value approach will enable us to continue to provide
     attractive long-term returns relative to our peers.


YEAR 2000 ISSUES. Each fund could be adversely affected if the computers used by
each fund and their service providers do not properly process and calculate
date-related information from and after January 1, 2000. Lord Abbett is working
to avoid such problems and has received assurances from each fund's service
providers that they are taking similar steps. Of course, the Year 2000 problem
is unprecedented and, therefore, Lord Abbett cannot eliminate altogether the
possibility that it or the fund will be affected.


                                                        For More Information  23





<PAGE>

                                                              AFFILIATED FUND

                                FINANCIAL INFORMATION

FINANCIAL HIGHLIGHTS

    This table describes the fund's performance for the fiscal period indicated.
    "Total return" shows how much your investment in the fund would have
    increased (or decreased) during each period, assuming you had reinvested all
    dividends and distributions. These Financial Highlights have been audited by
    Deloitte & Touche LLP, the fund's independent auditors, in conjunction with
    their annual audit of the fund's financial statements. Financial statements
    for the fiscal year ended October 31, 1998 and the Independent Auditors'
    Report thereon appear in the Annual Report to Shareholders for the fiscal
    year ended October 31, 1998 and are incorporated by reference into the
    Statement of Additional Information, which is available upon request.

================================================================================
<TABLE>
<CAPTION>

                                                            CLASS Y SHARES
                                                   -----------------------------
                                                         Year Ended October 31,
                                                                 1998(a)
<S>                                                             <C>
Per Share Operating Performance: 
NET ASSET VALUE, BEGINNING OF PERIOD                             $15.44
- --------------------------------------------------------------------------------
INCOME (LOSS) FROM INVESTMENT OPERATIONS
- --------------------------------------------------------------------------------
 Net investment income                                              .15
- --------------------------------------------------------------------------------
 Net realized and unrealized
- --------------------------------------------------------------------------------
  loss on investments                                              (.89)
- --------------------------------------------------------------------------------
Total from investment operations                                   (.74)
- --------------------------------------------------------------------------------
DISTRIBUTIONS
- --------------------------------------------------------------------------------
 Dividends from net investment income                              (.13)
- --------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                   $14.57
- --------------------------------------------------------------------------------
TOTAL RETURN(b)                                                   (4.77)%
- --------------------------------------------------------------------------------
RATIOS TO AVERAGE NET ASSETS:(c)
- --------------------------------------------------------------------------------
 Expenses                                                          0.24%
- --------------------------------------------------------------------------------
 Net investment income                                             1.03%
- --------------------------------------------------------------------------------
</TABLE>

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

<TABLE>
<CAPTION>
                                                       Year Ended October 31,
                                                  ------------------------------
                                                                1998
SUPPLEMENTAL DATA FOR ALL CLASSES:
<S>                                                          <C>
NET ASSETS, END OF YEAR (000)                                $8,520,603
- --------------------------------------------------------------------------------
PORTFOLIO TURNOVER RATE                                        56.49%
- --------------------------------------------------------------------------------
</TABLE>
(a) From March 27, 1998 (commencement of offering) to October 31, 1998.
(b) Total return is not annualized and assumes the reinvestment of all
    distributions.
(c) Not annualized.

24  Financial Information





<PAGE>


                                                                AFFILIATED FUND 

LINE GRAPH COMPARISON

    Immediately below is a comparison of a $10,000 investment in class A shares
    to the same investment in the S&P 500'r' Index, assuming reinvestment of all
    dividends and distributions.

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


[GRAPHIC OMITTED]


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

                 Average Annual Total Return
            For The Periods Ending October 31, 1998
<TABLE>
<CAPTION>


               1 YEAR           5 YEARS            10 YEARS
- --------------------------------------------------------------------------------
<S>            <C>              <C>                <C>
Class A(1)     10.27%           17.04%              14.83%
- --------------------------------------------------------------------------------

</TABLE>

(1) This shows total return which is the percent change in net asset value, with
    all dividends and distributions reinvested for the periods shown ending
    October 31, 1998 using the SEC-required uniform method to compute total
    return. Because the class Y shares were first offered on 3/27/98, the line
    graph comparison and the total returns shown below that comparison are for
    class A shares at net asset value. Returns for class Y shares will be
    somewhat higher because Y shares have lower expenses. Inception date for
    class A shares is 1/1/50.

(2) Performance for the unmanaged S&P 500'r' Index does not reflect transaction
    costs, management fees or sales charges.

                                                     Financial Information  25




<PAGE>


                                                      GROWTH OPPORTUNITIES FUND

LINE GRAPH COMPARISON

    Immediately below is a comparison of a $10,000 investment in class A shares
    to the same investment in the RMCG Index'r', assuming reinvestment of all
    dividends and distributions.

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


[GRAPHIC OMITTED]



================================================================================
                  Average Annual Total Return
           For The Periods Ending November 30, 1998
<TABLE>
<CAPTION>
                                 1 YEAR               LIFE
<S>                              <C>                  <C>
- --------------------------------------------------------------------------------
Class A(1)                       (1.50)%             15.58%
- --------------------------------------------------------------------------------
</TABLE>


(1) This shows total return which is the percent change in net asset value, with
    all dividends and distributions reinvested for the periods shown ending
    November 30, 1998 using the SEC-required uniform method to compute total
    return. Because class Y shares are new, the line graph comparison and the
    total returns shown below that comparison are for class A shares at net
    asset value. Returns for class Y shares will be somewhat higher because Y
    shares have lower expenses.The class A share inception date is 8/1/95.

(2) Performance for the unmanaged RMCG Index'r' does not reflect transaction
    costs, management fees or sales charges.

26  Financial Information






<PAGE>


                                                         INTERNATIONAL SERIES
FINANCIAL HIGHLIGHTS

    This table describes the fund's performance for the fiscal periods
    indicated. "Total return" shows how much your investment in the fund would
    have increased (or decreased) during each period, assuming you had
    reinvested all dividends and distributions. These Financial Highlights have
    been audited by Deloitte & Touche LLP, the fund's independent auditors, in
    conjunction with their annual audit of the fund's financial statements.
    Financial statements for the fiscal year ended October 31, 1998 and the
    Independent Auditors' Report thereon appear in the Annual Report to
    Shareholders for the fiscal year ended October 31, 1998 and are incorporated
    by reference into the Statement of Additional Information, which is
    available upon request.

================================================================================
<TABLE>
<CAPTION>

                                                              CLASS Y SHARES
                                                     ---------------------------
                                                          Year Ended October 31,
                                                                  1998(a)
Per Share Operating Performance: 
<S>                                                       <C>
NET ASSET VALUE, BEGINNING OF PERIOD                              $11.28
- --------------------------------------------------------------------------------
INCOME FROM INVESTMENT OPERATIONS
- --------------------------------------------------------------------------------
 Net investment income                                               .15(d)
- --------------------------------------------------------------------------------
 Net realized and unrealized gain on
- --------------------------------------------------------------------------------
  investments and foreign currency holdings                          .98
- --------------------------------------------------------------------------------
Total from investment operations                                    1.13
- --------------------------------------------------------------------------------
DISTRIBUTIONS
- --------------------------------------------------------------------------------
 Dividends from net investment income                                --
- --------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                    $12.41
- --------------------------------------------------------------------------------
TOTAL RETURN(b)                                                    10.02%
- --------------------------------------------------------------------------------
RATIOS TO AVERAGE NET ASSETS:(c)
- --------------------------------------------------------------------------------
 Expenses                                                           0.84%
- --------------------------------------------------------------------------------
 Net investment income                                              1.11%
- --------------------------------------------------------------------------------
</TABLE>

================================================================================
<TABLE>
<CAPTION>

                                                     Year Ended October 31,
                                              ----------------------------------
                                                               1998
<S>                                                        <C>
SUPPLEMENTAL DATA FOR ALL CLASSES: 

NET ASSETS, END OF PERIOD (000)                              $153,033
- --------------------------------------------------------------------------------
PORTFOLIO TURNOVER RATE                                       20.52%
- --------------------------------------------------------------------------------
</TABLE>

(a) From December 30, 1997 (commencement of offering) to October 31, 1998.
(b) Total return is not annualized and assumes the reinvestment of all
    distributions.
(c) Not annualized.
(d) Calculated using average shares outstanding during the period.


                                                     Financial Information   27



Page>


                                                          INTERNATIONAL SERIES

LINE GRAPH COMPARISON

    Immediately below is a comparison of a $10,000 investment in class Y shares
    to the same investment in the Morgan Stanley European, Australasia and Far
    East Index'r' ("MSCI EAFE Index'r'"), assuming reinvestment of all dividends
    and distributions.
================================================================================


[GRAPHIC OMITTED]


================================================================================
                 Average Annual Total Return
            For The Periods Ending October 31, 1998

<TABLE>
<CAPTION>

                                 LIFE
<S>                              <C>
- --------------------------------------------------------------------------------
Class Y(2)                      10.02%
- --------------------------------------------------------------------------------

</TABLE>


(1) Performance for the unmanaged MSCIEAFE Index'r' does not reflect transaction
    costs, management fees or sales charges.

(2) This shows total return which is the percent change in net asset value, with
    all dividends and distributions reinvested for the periods shown ending
    October 31, 1998 using the SEC-required uniform method to compute total
    return. The class Y share inception date is 12/30/97.


28  Financial Information






<PAGE>




                                                              LARGE-CAP SERIES

LINE GRAPH COMPARISON

    Immediately below is a comparison of a $10,000 investment in class A shares
    to the same investment in the S&P500'r' Index, assuming reinvestment of all
    dividends and distributions.

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


[GRAPHIC OMITTED]


================================================================================
                  Average Annual Total Return
           For The Periods Ending November 30, 1998
<TABLE>
<CAPTION>

                         1 YEAR        5 YEARS         LIFE
- --------------------------------------------------------------------------------
<S>                      <C>           <C>            <C>
Class A(2)               13.45%        19.80%         18.93%
- --------------------------------------------------------------------------------
</TABLE>


(1) Performance for the unmanaged S&P 500'r' Index does not reflect transaction 
    costs, management fees or sales charges.

(2) This shows total return which is the percent change in net asset value, with
    all dividends and distributions reinvested for the periods shown ending
    November 30, 1998 using the SEC-required uniform method to compute total
    return. Because class Y shares are new, the line graph comparison and the
    total returns shown below that comparison are for class A shares at net
    asset value. Returns for class Y shares will be somewhat higher because 
    Y shares have lower expenses. The class A share inception date is 6/3/92.

                                                      Financial Information  29





<PAGE>


                                                          Small-Cap Value Series

FINANCIAL HIGHLIGHTS

    This table describes the fund's performance for the fiscal periods
    indicated. "Total return" shows how much your investment in the fund would
    have increased (or decreased) during each period, assuming you had
    reinvested all dividends and distributions. These Financial Highlights have
    been audited by Deloitte & Touche LLP, the fund's independent auditors, in
    conjunction with their annual audit of the fund's financial statements.
    Financial statements for the fiscal year ended November 30, 1998 and the
    Independent Auditors' Report thereon appear in the Annual Report to
    Shareholders for the fiscal year ended November 30, 1998 and are
    incorporated by reference into the Statement of Additional Information,
    which is available upon request.

<TABLE>
<CAPTION>
==============================================================================================
                                                                      CLASS Y SHARES
                                                      ----------------------------------------
                                                                   Year Ended November 30,
<S>                                                                            <C>    
Per Share Operating Performance:                                            1998(a)

NET ASSET VALUE, BEGINNING OF PERIOD                                        $16.34
- ----------------------------------------------------------------------------------------------
INCOME (LOSS) FROM INVESTMENT OPERATIONS
- ----------------------------------------------------------------------------------------------
 Net investment loss                                                          (.01)(c)
- ----------------------------------------------------------------------------------------------
 Net realized and unrealized
- ----------------------------------------------------------------------------------------------
  loss on investments                                                        (1.93)
- ----------------------------------------------------------------------------------------------
Total from investment operations                                             (1.94)
- ----------------------------------------------------------------------------------------------
DISTRIBUTIONS
- ----------------------------------------------------------------------------------------------
 Dividends from net investment income                                          --
- ----------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                              $14.40
- ----------------------------------------------------------------------------------------------
TOTAL RETURN(b)                                                             (11.87)%
- ----------------------------------------------------------------------------------------------
RATIOS TO AVERAGE NET ASSETS:(d)
- ----------------------------------------------------------------------------------------------
 Expenses                                                                     0.96%
- ----------------------------------------------------------------------------------------------
 Net investment loss                                                         (0.05)%
- ----------------------------------------------------------------------------------------------

==============================================================================================
                                                                   Year Ended November 30,
                                                            ----------------------------------
SUPPLEMENTAL DATA FOR ALL CLASSES:                                           1998
NET ASSETS, END OF YEAR (000)                                              $515,379
- ----------------------------------------------------------------------------------------------
PORTFOLIO TURNOVER RATE                                                      67.86%
- ----------------------------------------------------------------------------------------------
</TABLE>
(a) From December 30, 1997 (commencement of offering) to November 30, 1998.
(b) Total return is not annualized and assumes the reinvestment of all
    distributions.
(c) Calculated using average shares outstanding during the period.
(d) Not annualized.


30  Financial Information










<PAGE>




                                                          SMALL-CAP VALUE SERIES

LINE GRAPH COMPARISON

     Immediately below is a comparison of a $10,000 investment in class Y shares
     to the same investment in the Russell 2000'r' Index, assuming reinvestment
     of all dividends and distributions.






[GRAPHIC OMITTED]




<TABLE>
<CAPTION>
===============================================================================
                           Average Annual Total Return
                    For The Periods Ending November 30, 1998

                                 LIFE
- -------------------------------------------------------------------------------
<S>                            <C>     
Class Y(2)                     (11.87)%
- -------------------------------------------------------------------------------
</TABLE>


- -------------------------------------------------------------------------------
(1) Performance for the unmanaged Russell 2000'r' Index does not reflect
    transaction costs, management fees or sales charges.

(2) This shows total return which is the percent change in net asset value, with
    all dividends and distributions reinvested for the periods shown ending
    November 30, 1998 using the SEC-required uniform method to compute total
    return. The class Y share inception date is 12/30/97.



                                                     Financial Information  31






Page>



                       THIS PAGE INTENTIONALLY LEFT BLANK









<PAGE>




     More information on these funds is available free upon request, including
     the following:

ANNUAL/SEMI-ANNUAL REPORT

     Describes the funds, lists portfolio holdings and contains a letter from
     each fund's manager discussing recent market conditions and each fund's
     investment strategies.

STATEMENT OF ADDITIONAL INFORMATION ("SAI")

     Provides more details about the funds and their policies. A current SAI is
     on file with the Securities and Exchange Commission ("SEC") and is
     incorporated by reference (is legally considered part of this prospectus).

     Lord Abbett Affiliated Fund
     Lord Abbett Growth Opportunities Fund
     Lord Abbett High Yield Fund
     Lord Abbett International Series
     Lord Abbett Large-Cap Series
     Lord Abbett Small-Cap Value Series

     The General Motors Building
     767 Fifth Avenue
     New York, NY 10153-0203
     --------------------------------------------------------------------------
     SEC file numbers: 811-3, 811-07538, 811-07988, 811-07538, 811-6650,
     811-6650

To obtain information:

BY TELEPHONE.  Call the funds at:
800-426-1130

BY MAIL.  Write to the funds at:

The Lord Abbett Family of Funds
767 Fifth Avenue
New York, NY 10153-0203

VIA THE INTERNET.
LORD, ABBETT & CO.
http://www.lordabbett.com

Text only versions of fund documents can be viewed online or downloaded from:

SEC
http://www.sec.gov

You can also obtain copies by visiting the SEC's Public Reference Room in
Washington, DC (phone 800-SEC-0330) or by sending your request and a duplicating
fee to the SEC's Public Reference Section, Washington, DC 20549-6009.

LAPROSP-Y6-1-599
(5/99)

<PAGE>


Lord, Abbett & Co.  
Statement of Additional Information                               May 1, 1999

                          Lord Abbett Affiliated Fund
                     Lord Abbett Growth Opportunities Fund
                          Lord Abbett High Yield Fund
                         Lord Abbett International Series
                          Lord Abbett Large-Cap Series
                       Lord Abbett Small-Cap Value Series
- ------------------------------------------------------------------------------
This Statement of Additional Information is not a Prospectus. A Prospectus for
Class Y shares of the Funds mentioned below may be obtained from your securities
dealer or from Lord Abbett Distributor LLC ("Lord Abbett Distributor") at the
General Motors Building, 767 Fifth Avenue, New York, New York 10153-0203. This
Statement of Additional Information relates to, and should be read in
conjunction with, the Prospectus dated May 1, 1999. This Statement of Additional
Information, relating to Lord Abbett Affiliated Fund, Inc. ("Affiliated Fund");
Lord Abbett Large-Cap Series, ("Large-Cap Series"), Lord Abbett Small-Cap Value
Series ("Small-Cap Value Series"), and Lord Abbett Growth Opportunities Fund
("Growth Opportunities Fund"), which are all portfolios of Lord Abbett Research
und, Inc.; Lord Abbett International Series ("International Series"), which is a
portfolio of Lord Abbett Securities Trust; and Lord Abbett High Yield Fund
("High Yield Fund"), which is a portfolio of Lord Abbett Investment Trust, (each
individually "we" or the "Fund," collectively (the "Funds"), may be obtained
from your securities dealer or from Lord Abbett Distributor LLC ("Lord Abbett
Distributor") at The General Motors Building, 767 Fifth Avenue, New York, New
York 10153-0203. This Statement of Additional Information relates to, and should
be read in conjunction with, the Prospectus dated May 1, 1999 (the
"Prospectus").

Our Boards of Directors/Trustees have authority to create and classify shares in
separate series, without further action by shareholders. To date, the Boards of
Directors/Trustees have authorized five classes of shares for each Fund (Class
A, B, C, P and Y). The Board of a Fund will allocate a Fund's shares among its
classes from time to time. All shares of a Fund have equal noncumulative voting
rights and equal rights with respect to dividends, assets and liquidation,
except for certain class-specific expenses. They are fully paid and
nonassessable when issued and have no preemptive or conversion rights. Although
no present plans exist to do so, further classes or series may be added to one
or more of the Funds in the future. The Investment Company Act of 1940, as
amended (the "Act"), requires that where more than one series exists for a Fund,
each series must be preferred over all other series in respect of assets
specifically allocated to such series.

Rule 18f-2 under the Act provides that any matter required to be submitted, by
the provisions of the Act or applicable state law or otherwise, to the holders
of the outstanding voting securities of an investment company such as a Fund
shall not be deemed to have been effectively acted upon unless approved by the
holders of a majority of the outstanding shares of each class or series affected
by such matter. Rule 18f-2 further provides that a class or series shall be
deemed to be affected by a matter unless the interests of each class or series
in the matter are substantially identical or the matter does not affect any
interest of such class or series. However, the Rule exempts the selection of
independent public accountants, the approval of principal distribution contracts
and the election of directors from the separate voting requirements of the Rule.
Shareholder inquiries should be made by writing directly to your Fund or by
calling 800-821-5129. In addition, you can make inquiries through Lord Abbett
Distributor.

<TABLE>
<CAPTION>
                  TABLE OF CONTENTS                           PAGE
                  ----------------                            ----
                  <S>                                         <C>
                  1. Investment Policies                        2
                  2. Directors (Trustees) and Officers         11
                  3. Investment Advisory and Other Services    17
                  4. Portfolio Transactions                    19
                  5. Purchases, Redemptions
                     and Shareholder Services                  21
                  6. Taxes                                     22
                  7. Past Performance                          23
                  8. Information About The Funds               24
                  9. Financial Statements                      24
</TABLE>

                                       1.
                               Investment Policies

                                       1






<PAGE>



Fundamental Investment Restrictions. The Funds are subject to the following
investment restrictions which cannot be changed without approval of a majority
of each Fund's outstanding shares. Each Fund may not: (1) borrow money, except
that (i) each Fund may borrow from banks (as defined in the Investment Company
Act of 1940, as amended (the "Act")) in amounts up to 33 1/3% of its total
assets (including the amount borrowed), (ii) each Fund may borrow up to an
additional 5% of its total assets for temporary purposes, (iii) each Fund may
obtain such short-term credit as may be necessary for the clearance of purchases
and sales of portfolio securities and (iv) each Fund may purchase securities on
margin to the extent permitted by applicable law; (2) pledge its assets (other
than to secure borrowings, or to the extent permitted by the Fund's investment
policies as permitted by applicable law); (3) engage in the underwriting of
securities, except pursuant to a merger or acquisition or to the extent that, in
connection with the disposition of its portfolio securities, it may be deemed to
be an underwriter under federal securities laws; (4) make loans to other
persons, except that the acquisition of bonds, debentures or other corporate
debt securities and investment in government obligations, commercial paper,
pass-through instruments, certificates of deposit, bankers acceptances,
repurchase agreements or any similar instruments shall not be subject to this
limitation, and except further that each Fund may lend its portfolio securities,
provided that the lending of portfolio securities may be made only in accordance
with applicable law; (5) buy or sell real estate (except that each Fund may
invest in securities directly or indirectly secured by real estate or interests
therein or issued by companies which invest in real estate or interests therein)
or commodities or commodity contracts (except to the extent each Fund may do so
in accordance with applicable law and without registering as a commodity pool
operator under the Commodity Exchange Act as, for example, with futures
contracts); (6) with respect to 75% of the gross assets of each Fund, buy
securities of one issuer representing more than (i) 5% of each Fund's gross
assets, except securities issued or guaranteed by the U.S. Government, its
agencies or instrumentalities or (ii) 10% of the voting securities of such
issuer; (7) invest more than 25% of its assets, taken at market value, in the
securities of issuers in any particular industry (excluding securities of the
U.S. Government, its agencies and instrumentalities); or (8) issue senior
securities to the extent such issuance would violate applicable law.

With respect to the restrictions mentioned herein, compliance therewith will not
be affected by changes in the market value of portfolio securities but will be
determined at the time of purchase or sale of such securities.

Non-Fundamental Investment Restrictions. In addition to the investment
restrictions above which cannot be changed without shareholder approval, each
Fund also is subject to the following non-fundamental investment policies which
may be changed by the Boards of Directors (Trustees) without shareholder
approval. Each Fund may not: (1) borrow in excess of 33 1/3% of its total assets
(including the amount borrowed), and then only as a temporary measure for
extraordinary or emergency purposes; (2) make short sales of securities or
maintain a short position except to the extent permitted by applicable law; (3)
invest knowingly more than 15% of its net assets (at the time of investment) in
illiquid securities, except for securities qualifying for resale under Rule 144A
of the Securities Act of 1933, deemed to be liquid by the Boards of Directors
(Trustees); (4) invest in the securities of other investment companies as
defined under the Act, except as permitted by applicable law; (5) invest in
securities of issuers which, with their predecessors, have a record of less than
three years of continuous operation, if more than 5% of each Fund's total assets
would be invested in such securities (this restriction shall not apply to
mortgaged-backed securities, asset-backed securities or obligations issued or
guaranteed by the U. S. Government, its agencies or instrumentalities); (6) hold
securities of any issuer if more than 1/2 of 1% of the securities of such issuer
are owned beneficially by one or more of each Fund's officers or directors
(trustees) or by one or more partners or members of the Fund's underwriter or
investment adviser if these owners in the aggregate own beneficially more than
5% of the securities of such issuer; (7) invest in warrants if, at the time of
the acquisition, its investment in warrants, valued at the lower of cost or
market, would exceed 5% of each Fund's total assets (included within such
limitation, but not to exceed 2% of each Fund's total assets, are warrants which
are not listed on the New York or American Stock Exchange or a major foreign
exchange); (8) invest in real estate limited partnership interests or interests
in oil, gas or other mineral leases, or exploration or other development
programs, except that each Fund may invest in securities issued by companies
that engage in oil, gas or other mineral exploration or other development
activities; (9) write, purchase or sell puts, calls, straddles, spreads or
combinations thereof, except to the extent permitted in a Fund's prospectus and
statement of additional information, as they may be amended from time to time;
(10) buy from or sell to any of a Fund's officers, directors (trustees),
employees, or its investment adviser or any of a Fund's officers, directors
(trustees), partners or employees, any securities other than shares of a Fund;
(11) with respect to Affiliated Fund, pledge, mortgage or hypothecate its
assets; however, this provision does not apply to the grant of escrow receipts
or the entry into other similar escrow arrangements arising out

                                       2





Page>




of the writing of covered call options; and (12) with respect to High Yield
Fund, invest more than 10% of the market value of its gross assets at the time
of investment in debt securities which are in default as to interest or
principal.

For the year ended October 31, 1998, Affiliated Fund's portfolio turnover rate
was 56.49% versus 46.41% for the prior year. For the year ended November 30,
1998, the Small-Cap Series' portfolio turnover rate was 67.86% versus 45.24% for
the prior year; and the Large-Cap Series' portfolio turnover rate was 99.14%
versus 30.81% for the prior year. For the year ended October 31, 1998, the
International Series' portfolio turnover rate was 20.52% versus 29.72% for the
period December 13, 1996 (commencement of operations) to October 31, 1997. For
the year ended November 30, 1998, the Growth Opportunities Fund's turnover rate
was 136.81% versus 52.86% for the prior year.

With respect to the Affiliated Fund, it has no current intention to do so, but
may invest in financial futures & options on financial futures.

INVESTMENT TECHNIQUES

Lending Portfolio Securities (Affiliated Fund, Growth Opportunities Fund,
International SeriesLarge-Cap Series, Small-Cap Value Series) The Funds may lend
portfolio securities to registered broker-dealers. These loans may not exceed
30% of total assets. The Funds' loans of securities will be collateralized by
cash or marketable securities issued or guaranteed by the U.S. Government or its
agencies ("U.S. Government Securities") or other permissible means. The cash or
instruments collateralizing the loans of securities will be maintained at all
times in an amount at least equal to the current market value of the loaned
securities. From time to time, the Funds may allow to the borrower and/or a
third party that is not affiliated with the Funds and is acting as a "placing
broker" a part of the interest received with respect to the investment of
collateral received for securities loaned. No fee will be paid to affiliated
persons of the Funds.

By lending portfolio securities, the Funds can increase their income by
continuing to receive interest on the loaned securities as well as by either
investing the cash collateral in permissible investments, such as U.S.
Government Securities, or obtaining yield in the form of interest paid by the
borrower when such U.S. Government Securities are used as collateral. The Funds
will comply with the following conditions whenever they loans securities: (i)
the Funds must receive at least 100% collateral from the borrower; (ii) the
borrower must increase the collateral whenever the market value of the
securities loaned rises above the level of the collateral; (iii) the Funds must
be able to terminate the loan at any time; (iv) the Funds must receive
reasonable compensation with respect to the loan, as well as any dividends,
interest or other distributions on the loaned securities; (v) the Funds may pay
only reasonable fees in connection with the loan and (vi) voting rights on the
loaned securities may pass to the borrower except that, if a material event
adversely affecting the investment in the loaned securities occurs, the Funds'
Board must terminate the loan and regain the right to vote the securities.

Rule 144A Securities (Affiliated Fund) The Fund may invest in securities
qualifying for resale to "qualified institutional buyers" under SEC Rule 144A
that are determined by the Board, or by Lord Abbett pursuant to the Board's
delegation, to be liquid securities. The Board will review quarterly the
liquidity of the investments the Fund makes in such securities. Investments by
the Fund in Rule 144A securities initially determined to be liquid could have
the effect of diminishing the level of the Fund's liquidity during periods of
decreased market interest in such securities among qualified institutional
buyers.


Other Investment Policies (Affiliated Fund and Large-Cap Series) Both Funds may
write covered call options which are traded on a national securities exchange
with respect to securities in our portfolio in an attempt to increase income and
to provide greater flexibility in the disposition of portfolio securities. A
"call option" is a contract sold for a price (the "premium") giving its holder
the right to buy a specific number of shares of stock at a specific price prior
to a specified date. A "covered call option" is a call option issued on
securities already owned by the writer of the call option for delivery to the
holder upon the exercise of the option. During the period of the option, a Fund
will forgo the opportunity to profit from any increase in the market price of
the underlying security above the exercise price of the option (to the extent
that the increase exceeds our net premium). We also may enter into "closing
purchase transactions"

                                       3




<PAGE>




in order to terminate the obligation to deliver the underlying security (this
may result in a short-term gain or loss). A closing purchase transaction is the
purchase of a call option (at a cost which may be more or less than the premium
received for writing the original call option) on the same security, with the
same exercise price and call period as the option previously written. If a Fund
is unable to enter into a closing purchase transaction, it may be required to
hold a security that it might otherwise have sold to protect against
depreciation. A Fund does not intend to write covered call options with respect
to securities with an aggregate market value of more than 10% of its gross
assets at the time an option is written. This percentage limitation will not be
increased without prior disclosure in a Fund's current Prospectus.

Repurchase Agreements (International Series) The Fund may enter into repurchase
agreements with respect to a security. A repurchase agreement is a transaction
by which the Fund acquires a security and simultaneously commits to resell that
security to the seller (a bank or securities dealer) at an agreed upon price on
an agreed upon date. The resale price reflects the purchase price plus an agreed
upon market rate of interest which is unrelated to the coupon rate or date of
maturity of the purchased security. In this type of transaction, the securities
purchased by each Fund have a total value in excess of the value of the
repurchase agreement. The Fund requires at all times that the repurchase
agreement be collateralized by cash or U.S. Government securities having a value
equal to, or in excess of, the value of the repurchase agreement. Such
agreements permit the Fund to keep all of its assets at work while retaining
flexibility in pursuit of investments of a longer term nature.

The use of repurchase agreements involves certain risks. For example, if the
seller of the agreement defaults on its obligation to repurchase the underlying
securities at a time when the value of these securities has declined, the Fund
may incur a loss upon disposition of them. If the seller of the agreement
becomes insolvent and subject to liquidation or reorganization under the
Bankruptcy Code or other laws, a bankruptcy court may determine that the
underlying securities are collateral not within the control of each Fund and are
therefore subject to sale by the trustee in bankruptcy. Even though the
repurchase agreements may have maturities of seven days or less, they may lack
liquidity, especially if the issuer encounters financial difficulties. While
Fund management acknowledges these risks, it is expected that they can be
controlled through stringent selection criteria and careful monitoring
procedures. Fund management intends to limit repurchase agreements to
transactions with dealers and financial institutions believed by Fund management
to present minimal credit risks. Fund management will monitor creditworthiness
of the repurchase agreement sellers on an ongoing basis.

The Fund will enter into repurchase agreements only with those primary reporting
dealers that report to the Federal Reserve Bank of New York and with the 100
largest United States commercial banks and the underlying securities purchased
under the agreements will consist only of those securities in which the Fund
otherwise may invest.

Warrants (International Series and Large-Cap Series) Pursuant to Texas
regulations, both Funds will not invest more than 5% of its assets in warrants
and not more than 2% of such value in warrants not listed on the New York or
American Stock Exchanges, except when they form a unit with other securities. As
a matter of operating policy, we will not invest more than 5% of our net assets
in rights.

Covered Call Options (International Series and Large-Cap Series) Both Funds may
write covered call options which are traded on a national securities exchange
with respect to securities in its portfolio in an attempt to increase its income
and to provide greater flexibility in the disposition of its portfolio
securities. A "call option" is a contract sold for a price (the "premium")
giving its holder the right to buy a specific number of shares of stock at a
specific price prior to a specified date. A "covered call option" is a call
option issued on securities already owned by the writer of the call option for
delivery to the holder upon the exercise of the option. During the period of the
option, a Fund forgoes the opportunity to profit from any increase in the market
price of the underlying security above the exercise price of the option (to the
extent that the increase exceeds its net premium). A Fund may enter into
"closing purchase transactions" in order to terminate its obligation to deliver
the underlying security (this may result in a short-term gain or loss). A
closing purchase transaction is the purchase of a call option (at a cost which
may be more or less than the premium received for writing the original call
option) on the same security, with the same exercise price and call period as
the option previously written. If a Fund is unable to enter into a closing
purchase transaction, it may be required to hold a security that it might
otherwise have sold to protect against depreciation. Both Funds intend to write
covered call

                                       4






<PAGE>




options with respect to securities with an aggregate market value of more than
5% of its gross assets at the time an option is written. This percentage
limitation will not be increased without prior disclosure in the current
Prospectus.

The Fund's custodian will segregate cash or liquid high-grade debt securities in
an amount not less than that required by Securities and Exchange Commission
("SEC") Release 10666 with respect to the Fund's assets committed to written
covered call options. If the value of the segregated securities declines,
additional cash or debt securities will be added on a daily basis (i.e.,
marked-to-market) so that the segregated amount will not be less than the amount
of the Fund's commitments with respect to such written options.

Financial Futures Contracts(International Series and Large-Cap Series)Both Funds
may enter into contracts for the future delivery of a financial instrument, such
as a security or the cash value of a securities index. This investment technique
is designed primarily to hedge (i.e., protect) against anticipated future
changes in interest rates or market conditions which otherwise might adversely
affect the value of securities which we hold or intend to purchase. A "sale" of
a futures contract means the undertaking of a contractual obligation to deliver
the securities or the cash value of an index called for by the contract at a
specified price during a specified delivery period. A "purchase" of a futures
contract means the undertaking of a contractual obligation to acquire the
securities or cash value of an index at a specified price during a specified
delivery period. At the time of delivery pursuant to the contract, adjustments
are made to recognize differences in value arising from the delivery of
securities which differ from those specified in the contract. In some cases,
securities called for by a futures contract may not have been issued at the time
the contract was written. The Funds will not enter into any futures contracts or
options on futures contracts if the aggregate of the market value of the
securities covered by its outstanding futures contracts and securities covered
by futures contracts subject to the outstanding options written by it would
exceed 50% of its total assets.

Although some financial futures contracts by their terms call for the actual
delivery or acquisition of securities, in most cases, a party will close out the
contractual commitment before delivery without having to make or take delivery
of the security by purchasing (or selling, as the case may be) on a commodities
exchange an identical futures contract calling for delivery in the same month.
Such a transaction, if effected through a member of an exchange, cancels the
obligation to make or take delivery of the securities. All transactions in the
futures market are made, offset or fulfilled through a clearing house associated
with the exchange on which the contracts are traded. The International Fund will
incur brokerage fees when it purchases or sells contracts and will be required
to maintain margin deposits. At the time it enters into a futures contract, it
is required to deposit with its custodian, on behalf of the broker, a specified
amount of cash or eligible securities called "initial margin." The initial
margin required for a futures contract is set by the exchange on which the
contract is traded. Subsequent payments, called "variation margin," to and from
the broker are made on a daily basis as the market price of the futures contract
fluctuates. The costs incurred in connection with futures transactions could
reduce the Fund's return. Futures contracts entail risks. If the investment
adviser's judgment about the general direction of interest rates or markets is
wrong, the overall performance may be poorer than if no such contracts had been
entered into.

There may be an imperfect correlation between movements in prices of futures
contracts and portfolio securities being hedged. The degree of difference in
price movements between futures contracts and the securities (or securities
indices) being hedged depends upon such things as variations in demand for
futures contracts and securities underlying the contracts and differences
between the liquidity of the markets for such contracts and the securities
underlying them. In addition, the market prices of futures contracts may be
affected by certain factors not directly related to the underlying securities.
At any given time, the availability of futures contracts, and hence their
prices, are influenced by credit conditions and margin requirements. Due to the
possibility of price distortions in the futures market and because of the
imperfect correlation between movements in the prices of securities and
movements in the prices of futures contracts, a correct forecast of market
trends by the investment adviser may not result in a successful hedging
transaction.

                                       5





<PAGE>




Options on Financial Futures ContractsInternational Series and Large-Cap Series)
Both Funds may purchase and write call and put options on financial futures
contracts. An option on a futures contract gives the purchaser the right, in
return for the premium paid, to assume a position in a futures contract at a
specified exercise price at any time during the period of the option. Upon
exercise, the writer of the option delivers the futures contract to the holder
at the exercise price. Both Funds would be required to deposit with our
custodian initial margin and maintenance margin with respect to put and call
options on futures contracts written by us. Options on futures contracts involve
risks similar to the risks relating to transactions in financial futures
contracts described above. Generally speaking, a given dollar amount used to
purchase an option on a financial futures contract can hedge a much greater
value of underlying securities than if that amount were used to directly
purchase the same financial futures. Should the event that a Fund intends to
hedge (or protect) against not materialize, however, the option may expire
worthless, in which case the Fund would lose the premium paid therefor.

Segregated Accounts (InternationalSeries and Large-Cap Series) To the extent
required to comply with Securities and Exchange Commission Release 10666 and any
related SEC policies, when purchasing a futures contract, or writing a put
option, the Fund will maintain in a segregated account at its custodian bank
cash, U.S. Government and other permitted securities to cover its position.

Forward Foreign Currency Contracts (Growth Opportunities Fund, Small-Cap Value
Series,) A forward foreign currency contract involves an obligation to purchase
or sell a specific amount of a specific currency at a set price at a future
date. Each Fund expects to enter into forward foreign currency contracts in
primarily two circumstances. First, when a Fund enters into a contract for the
purchase or sale of a security denominated in a foreign currency, it may desire
to "lock in" the U.S. dollar price of the security. By entering into a forward
contract for the purchase or sale of the amount of foreign currency involved in
the underlying security transaction, each Fund will be able to protect against a
possible loss resulting from an adverse change in the relationship between the
U.S. dollar and the subject foreign currency during the period between the date
the security is purchased or sold and the date on which payment is made or
received.

Second, when management believes that the currency of a particular foreign
country may suffer a decline against the U.S. dollar, each Fund may enter into a
forward contract to sell the amount of foreign currency approximating the value
of some or all of each Fund's portfolio securities denominated in such foreign
currency or, in the alternative, each Fund may use a cross-hedging technique
whereby it sells another currency which each Fund expects to decline in a
similar way but which has a lower transaction cost. Precise matching of the
forward contract amount and the value of the securities involved will not
generally be possible since the future value of such securities denominated in
foreign currencies will change as a consequence of market movements in the value
of those securities between the date the forward contract is entered into and
the date it matures. Each Fund does not intend to enter into such forward
contracts under this second circumstance on a continuous basis.

Repurchase Agreements (Growth Opportunities Fund, Small-Cap Value Series) If a
Fund enters into repurchase agreements as provided in clause (4) of the
fundamental investment restrictions above, it will do so only with those primary
reporting dealers that report to the Federal Reserve Bank of New York and with
the 100 largest United States commercial banks and the underlying securities
purchased under the agreements will consist only of those securities in which
each Fund otherwise may invest.

Foreign Currency Hedging Techniques (Growth Opportunities Fund, Small-Cap Value
Series) The Funds may utilize various foreign currency hedging techniques,
including forward foreign currency contracts and foreign currency put and call
options.

Foreign Currency Put and Call Options (Growth Opportunities Fund, Small-Cap
Value Series) The Funds also may purchase foreign currency put options and write
foreign currency call options on U.S. exchanges or U.S. over-the-counter
markets. A put option gives the Funds, upon payment of a premium, the right to
sell a currency at the exercise price until the expiration of the option and
serves to insure against adverse currency price movements in the underlying
portfolio assets denominated in that currency.

                                       6


Page>




Exchange-listed options markets in the United States include several major
currencies, and trading may be thin and illiquid. A number of major investment
firms trade unlisted options which are more flexible than exchange-listed
options with respect to strike price and maturity date. Unlisted options
generally are available in a wider range of currencies. Unlisted foreign
currency options are generally less liquid than listed options and involve the
credit risk associated with the individual issuer. Unlisted options, together
with other illiquid securities, are subject to a limit of 15% of each Funds' net
assets.

A call option written by a Funds gives the purchaser, upon payment of a premium,
the right to purchase from the a currency at the exercise price until the
expiration of the option. The Funds may write call options on a foreign currency
only in conjunction with a purchase of a put option on that currency. Such a
strategy is designed to reduce the cost of downside currency protection by
limiting currency appreciation potential. The face value of such writing may not
exceed 90% of the value of the securities denominated in such currency invested
in by the Funds or in such cross currency (referred to above) to cover such call
writing.

The Funds' custodian will segregate cash or permitted securities belonging to
the Funds in an amount not less than that required by SEC Release 10666 and
related policies with respect to the Funds' assets committed to (a) writing
options, (b) forward foreign currency contracts and (c) cross hedges entered
into by the Funds. If the value of the securities segregated declines,
additional cash or debt securities will be added on a daily basis (i.e., marked
to market), so that the segregated amount will not be less than the amount of
the Funds' commitments with respect to such written options, forward foreign
currency contracts and cross hedges.

Stock Options, Options on Stock Indices and Stock Index Futures (Small-Cap Value
Series) The Fund may write put and call options on stocks only if they are
covered, and such options must remain covered so long as the Fund is obligated
as a writer. The Fund will not (a) write puts having an aggregate exercise price
greater than 25% of the Fund's total net assets; or (b) purchase (i) put options
on stocks not held in the Fund's portfolio, (ii) put options on stock indices or
(iii) call options on stocks or stock indices if, after any such purchase, the
aggregate premiums paid for such options would exceed 20% of the Fund's total
net assets.

Call Options on Stock (Small-Cap Value Series) The Fund may, from time to time,
write call options on its portfolio securities. The Fund may write only call
options which are "covered," meaning that the Fund either owns the underlying
security or has an absolute and immediate right to acquire that security,
without additional cash consideration, upon conversion or exchange of other
securities currently held in its portfolio. In addition, the Fund will not
permit the call to become uncovered prior to the expiration of the option or
termination through a closing purchase transaction as described below. If the
Fund writes a call option, the purchaser of the option has the right to buy (and
the Fund has the obligation to sell) the underlying security at the exercise
price throughout the term of the option. The amount paid to the Fund by the
purchaser of the option is the "premium." The Fund's obligation to deliver the
underlying security against payment of the exercise price would terminate either
upon expiration of the option or earlier if the Fund were to effect a "closing
purchase transaction" through the purchase of an equivalent option on an
exchange. There can be no assurance that a closing purchase transaction can be
effected. The Fund does not intend to write covered call options with respect to
securities with an aggregate market value of more than 5% of it's gross assets
at the time an option is written. This percentage limitation will not be
increased without prior disclosure in our current prospectus. The Fund would not
be able to effect a closing purchase transaction after it had received notice of
exercise. In order to write a call option, the Fund is required to comply with
the rules of The Options Clearing Corporation and the various exchanges with
respect to collateral requirements. The Fund may not purchase call options
except in connection with a closing purchase transaction. It is possible that
the cost of effecting a closing purchase transaction may be greater than the
premium received by the Fund for writing the option.

Generally, the Fund intends to write listed covered call options during periods
when it anticipates declines in the market values of portfolio securities
because the premiums received may offset to some extent the decline in the
Fund's net asset value occasioned by such declines in market value. Except as
part of the "sell discipline" described below, the Fund will generally not write
listed covered call options when it anticipates that the market values of it's
portfolio securities will increase.

                                       7




Page>




One reason for the Fund to write call options is as part of a "sell discipline."
If the Fund decides that a portfolio security would be overvalued and should be
sold at a certain price higher than the current price, it could write an option
on the stock at the higher price. Should the stock subsequently reach that price
and the option be exercised, the Fund would, in effect, have increased the
selling price of that stock, which it would have sold at that price in any
event, by the amount of the premium. In the event the market price of the stock
declined and the option were not exercised, the premium would offset all or some
portion of the decline. It is possible that the price of the stock could
increase beyond the exercise price; in that event, the Fund would forego the
opportunity to sell the stock at that higher price. In addition, call options
may be used as part of a different strategy in connection with sales of
portfolio securities. If, in the judgment of the Fund Management, the market
price of a stock is overvalued and it should be sold, the Fund may elect to
write a call option with an exercise price substantially below the current
market price. As long as the value of the underlying security remains above the
exercise price during the term of the option, the option will, in all
probability, be exercised, in which case the Fund will be required to sell the
stock at the exercise price. If the sum of the premium and the exercise price
exceeds the market price of the stock at the time the call option is written,
the Fund would, in effect, have increased the selling price of the stock. The
Fund would not write a call option in these circumstances if the sum of the
premium and the exercise price were less than the current market price of the
stock.

Put Options on Stock (Small-Cap Value Series) The Fund may also write listed put
options. If the Fund writes a put option, it is obligated to purchase a given
security at a specified price at any time during the term of the option.

Writing listed put options is a useful portfolio investment strategy when the
Fund has cash or other reserves available for investment as a result of sales of
Fund shares or, more importantly, because Fund Management believes a more
defensive and less fully invested position is desirable in light of market
conditions. If the Fund Management wishes to invest its cash or reserves in a
particular security at a price lower than current market value, it may write a
put option on that security at an exercise price which reflects the lower price
it is willing to pay. The buyer of the put option generally will not exercise
the option unless the market price of the underlying security declines to a
price near or below the exercise price. If the Fund writes a listed put, the
price of the underlying stock declines and the option is exercised, the premium,
net of transaction charges, will reduce the purchase price paid by the Fund for
the stock. The price of the stock may decline by an amount in excess of the
premium, in which event the Fund would have foregone an opportunity to purchase
the stock at a lower price.

If, prior to the exercise of a put option, the Fund determines that it no longer
wishes to invest in the stock on which the put option had been written, the Fund
may be able to effect a closing purchase transaction on an exchange by
purchasing a put option of the same Fund as the one which it has previously
written. The cost of effecting a closing purchase transaction may be greater
than the premium received on writing the put option and there is no guarantee
that a closing purchase transaction can be effected.

Stock Index Options (Small-Cap Value Series) Except as describe below, the Fund
will write call options on indices only if on such date it holds a portfolio of
stocks at least equal to the value of the index times the multiplier times the
number of contracts. When the Fund writes a call option on a broadly-based stock
market index, it will segregate or put into escrow with its custodian, or pledge
to a broker as collateral for the option, one or more "qualified securities"
with a market value at the time the option is written of not less than 100% of
the current index value times the multiplier times the number of contracts.

Segregated Accounts (Small-Cap Value Series) If the Fund has written an option
on an industry or market segment index, it will segregate or put into escrow
with its custodian, or pledge to a broker as collateral for the option, at least
ten "qualified securities," which are securities of an issuer in such industry
or market segment, with a market value at the time the option is written of not
less than 100% of the current index value times the multiplier times the number
of contracts. A "qualified security" is an equity security which is listed on a
national securities exchange or listed on the National Association of Securities
Dealers Automated Quotation System against which the Fund has not written a
stock call option and which has not been hedged by the Fund by the sale of stock
index futures. Such securities will include stocks which represent at least 50%
of the weighing of the industry or market segment index and will represent at
least 50% of the Fund's holdings in that industry or market segment. No
individual security will represent more than 25% of the amount so segregated,
pledged or escrowed. If at the close of business on any day the market value of
such qualified securities so segregated, escrowed or pledged falls below 100% of
the current index value times the multiplier

                                       8







<PAGE>




times the number of contracts, the Fund will so segregate, escrow or pledge an
amount in cash, Treasury bills or other high-grade short-term obligations equal
in value to the difference. In addition, when the Fund writes a call on an index
which is in-the-money at the time the call is written, the Fund will segregate
with its custodian or pledge to the broker as collateral cash, equity
securities, non-investment grade debt, short term U.S. Government securities or
other high-grade short-term debt obligations equal in value to the amount by
which the call is in-the-money times the multiplier times the number of
contracts. Any amount segregated pursuant to the foregoing sentence may be
applied to the Small-Cap Fund's obligation to segregate additional amounts in
the event that the market value of the qualified securities falls below 100% of
the current index value times the multiplier times the number of contracts.
However, if the Fund holds a call on the same index as the call written where
the exercise price of the call held is equal to or less than the exercise price
of the call written or greater than the exercise price of the call written if
the difference is maintained by the Fund in cash, equity securities,
non-investment grade debt, treasury bills or other high-grade short-term
obligations in a segregated account with its custodian, it will not be subject
to the requirements describe in this paragraph. In instances involving the
purchase of stock index futures contracts by the Fund, an amount of cash or
permitted securities equal to the market value of the futures contracts will be
deposited in a segregated account with the its custodian and/or in a margin
account with a broker to collateralize the position and thereby insure that the
use of such futures are unleveraged.

Under regulations of the Commodity Exchange Act, investment companies registered
under the Act are exempt from the definition of "commodity pool operator,"
provided all of the Fund's commodity futures or commodity options transactions
constitute bona fide hedging transactions within the meaning of the CFTC's
regulations. The Fund will use stock index futures and options on futures as
described herein in a manner consistent with this requirement.

Stock Index Futures (Small-Cap Value Series) The Fund will engage in
transactions in stock index futures contracts as a hedge against changes
resulting from market conditions in the values of securities which are held in
the Fund's portfolio or which it intends to purchase. The Fund will engage in
such transactions when they are economically appropriate for the reduction of
risks inherent in the ongoing management of the Fund. The Fund may not purchase
or sell stock index futures if, immediately thereafter, more than one-third of
its net assets would be hedged and, in addition, except as described above in
the case of a call written and held on the same index, will write call options
on indices or sell stock index futures only if the amount resulting from the
multiplication of the then current level of the index (or indices) upon which
the option or future contract(s) is based, the applicable multiplier(s), and the
number of futures or options contracts which would be outstanding, would not
exceed one-third of the value of the Fund's net assets.

RISK FACTORS 

Risk Factors (Affiliated Fund) As stated in the Prospectus, the Fund may invest
no more than 5% of its net assets (at the time of investment) in lower-rated,
high-yield bonds. In general, the market for lower-rated, high-yield bonds is
more limited than the market for higher-rated bonds, and because trading in such
bonds may be thinner and less active, the market prices of such bonds may
fluctuate more than the prices of higher-rated bonds, particularly in times of
market stress. In addition, while the market for high-yield, corporate debt
securities has been in existence for many years, the market in recent years
experienced a dramatic increase in the large-scale use of such securities to
fund highly-leveraged corporate acquisitions and restructurings. Accordingly,
past experience may not provide an accurate indication of future performance of
the high-yield bond market, especially during periods of economic recession.
Other risks which may be associated with lower-rated, high-yield bonds include
their relative insensitivity to interest-rate changes; the exercise of any of
their redemption or call provisions in a declining market which may result in
their replacement by lower-yielding bonds; and legislation, from time to time,
which may adversely affect their market. Since the risk of default is higher
among lower-rated, high-yield bonds, Lord Abbett's research and analyses are an
important ingredient in the selection of such bonds. Through portfolio
diversification, good credit analysis and attention to current developments and
trends in interest rates and economic conditions, investment risk can be
reduced, although there is no assurance that losses will not occur. The Fund
does not have any minimum rating criteria applicable to the fixed-income
securities in which it invests.

Risks of Transactions in Stock Options (Small-Cap Value Series) Writing options
involves the risk that there will be no market in which to effect a closing
transaction. An option position may be closed out only on an exchange which
provides a secondary market for an option of the same Fund. Although the Fund
will generally write only those options

                                       9





Page>




for which there appears to be an active secondary market, there is no assurance
that a liquid secondary market on an exchange will exist for any particular
option, or at any particular time, and for some options no secondary market on
an exchange may exist. If the Fund, as a covered call option writer, is unable
to effect a closing purchase transaction in a secondary market, it will not be
able to sell the underlying security until the option expires or it delivers the
underlying security upon exercise.

Risks of Options on Indices (Small-Cap Value Series) The Fund's purchase and
sale of options on indices will be subject to risks described above under "Risk
of Transactions in Stock Options." In addition, the distinctive characteristics
of options on indices create certain risks that are not present with stock
options.

Because the value of an index option depends upon movements in the level of the
index rather than the price of a particular stock, whether the Fund will realize
a gain or loss on the purchase or sale of an option on an index depends upon
movements in the level of stock prices in the stock market generally or in an
industry or market segment rather than movements in the price of a particular
stock. Accordingly, successful use by the Fund of options on indices would be
subject to the investment adviser's ability to predict correctly movements in
the direction of the stock market generally or of a particular industry. This
requires different skills and techniques than predicting changes in the price of
individual stocks.

Index prices may be distorted if trading of certain stocks included in the index
is interrupted. Trading in the index option also may be interrupted in certain
circumstances, such as if trading were halted in a substantial number of stocks
included in the index. If this occurred, the Fund would not be able to close out
options which it had purchased or written and, if restrictions on exercise were
imposed, may be unable to exercise an option it holds, which could result in
substantial losses to the Fund. It is the Fund's policy to purchase or write
options only on indices which include a number of stocks sufficient to minimize
the likelihood of a trading halt in the index.

Trading in index options commenced in April 1983 with the S&P 100 option
(formerly called the CBOE 100). Since that time a number of additional index
option contracts have been introduced including options on industry indices.
Although the markets for certain index option contracts have developed rapidly,
the markets for other index options are still relatively illiquid. The ability
to establish and close out positions on such options will be subject to the
development and maintenance of a liquid secondary market. It is not certain that
this market will develop in all index option contracts. The Fund will not
purchase or sell any index option contract unless and until, in Fund
management's opinion, the market for such options has developed sufficiently
that such risk in connection with such transactions in no greater than such risk
in connection with options on stocks.

Special Risks of Writing Calls on Indices (Small-Cap Value Series) Because
exercises of index options are settled in cash, a call writer cannot determine
the amount of its settlement obligations in advance and, unlike call writing on
specific stocks, cannot provide in advance for, or cover, its potential
settlement obligations by acquiring and holding the underlying securities.
However, the Fund will write call options on indices only under the
circumstances described above under "Limitations on the Purchases and Sales of
Stock Options, Options on Stock Indices and Stock Index Futures."

Price movements in the Fund's portfolio probably will not correlate precisely
with movements in the level of the index and, therefore, the Fund bears the risk
that the price of the securities held may not increase as much as the index. In
such event the Fund would bear a loss on the call which is not completely offset
by movements in the price of the Fund's portfolio. It is also possible that the
index may rise when the Fund's portfolio of stocks does not rise. If this
occurred, the Fund would experience a loss on the call which is not offset by an
increase in the value of its portfolio and might also experience a loss in its
portfolio. However, because the value of a diversified portfolio will, over
time, tend to move in the same direction as the market, movements in the value
of the Fund in the opposite direction to the market would be likely to occur for
only a short period or to a small degree.

Unless the Fund has other liquid assets that are sufficient to satisfy the
exercise of a call, the Fund would be required to liquidate portfolio securities
in order to satisfy the exercise. Because an exercise must be settled within
hours after receiving the notice of exercise, if the Fund fails to anticipate an
exercise, it may have to borrow (in amounts not exceeding 20% of the Fund's
total assets) pending settlement of the sale of securities in its portfolio and
would incur interest charges thereon.

                                       10







<PAGE>




When the Fund has written a call, there is also a risk that the market may
decline between the time the call is written and the time the Fund is able to
sell stocks in its portfolio. As with stock options, the Fund will not learn
that an index option has been exercised until the day following the exercise
date but, unlike a call on stock where the Fund would be able to deliver the
underlying securities in settlement, the Fund may have to sell part of its stock
portfolio in order to make settlement in cash, and the price of such stocks
might decline before they can be sold. This timing risk makes certain strategies
involving more than one option substantially more risky with index options than
with stock options. For example, even if an index call which the Fund has
written is "covered" by an index call held by the Fund with the same strike
price, the Fund will bear the risk that the level of the index may decline
between the close of trading on the date the exercise notice is filed with the
clearing corporation and the close of trading on the date the Fund exercises the
call it holds or the time the Fund sells the call which in either case would
occur no earlier than the day following the day the exercise notice was filed.

Special Risks of Purchasing Puts and Calls on Indices (Small-Cap Value Series)
If the Fund holds an index option and exercises it before final determination of
the closing index value for that day, it runs the risk that the level of the
underlying index may change before closing. If such a change causes the
exercised option to fall out-of-the-money, the Fund will be required to pay the
difference between the closing index value and the exercise price of the option
(times the applicable multiple) to the assigned writer. Although the Fund may be
able to minimize this risk by withholding exercise instructions until just
before the daily cut off time or by selling rather than exercising an option
when the index level is close to the exercise price it may not be possible to
eliminate this risk entirely because the cut off times for index options may be
earlier than those fixed for other types of options and may occur before
definitive closing index values are announced.

                                       2.
                           Board Members and Officers

The following director/trustee is a partner of Lord, Abbett & Co. ("Lord
Abbett"), The General Motors Building, 767 Fifth Avenue, New York, New York
10153-0203. He has been associated with Lord Abbett for over five years and is
also an officer, director, or trustee of the other Lord Abbett-sponsored funds.
He is an "interested person" as defined in the Act, and as such, may be
considered to have an indirect financial interest in the Rule 12b-1 Plan
described in the Prospectus.

Robert S. Dow, age 54, Chairman and President 

The following outside directors are also directors or trustees of twelve other
Lord Abbett-sponsored funds referred to above.

E. Thayer Bigelow 
Time Warner Inc.
1271 Avenue of the Americas
New York, New York 

Senior Adviser, Time Warner Inc. Formerly, Acting Chief Executive Officer of
Courtroom Television Network (1997 - 1998). Formerly, President and Chief
Executive Officer of Time Warner Cable Programming, Inc. (1991 - 1997). Prior to
that, President and Chief Operating Officer of Home Box Office, Inc. Age 57.

William H. T. Bush
Bush-O'Donnell & Co., Inc.
101 South Hanley Road, Suite 1025
St. Louis, Missouri

Co-founder and Chairman of the Board of the financial advisory firm of
Bush-O'Donnell & Company. Age 60.

Robert B. Calhoun, Jr.

                                       11





Page>



Monitor Clipper Partners
650 Madison Avenue, 9th Floor
New York, New York                      

Managing Director of Monitor Clipper Partners and President of The Clipper Group
L.P., both private equity investment funds. Age 56.

Stewart S. Dixon
Wildman, Harrold, Allen & Dixon
225 W. Wacker Drive (Suite 2800)
Chicago, Illinois

Partner in the law firm of Wildman, Harrold, Allen & Dixon. Age 68.

John C. Jansing
162 S. Beach Road
Hobe Sound, Florida

Retired. Former Chairman of Independent Election Corporation of America, a proxy
tabulating firm. Age 73.

C. Alan MacDonald
Directorship Inc.
8 Sound Shore Drive
Greenwich, Connecticut

Managing Director of Directorship Inc., a consultancy in board management and
corporate governance. Formerly, General Partner of the Marketing Partnership,
Inc., a full service marketing consulting firm (1994 - 1997). Prior to that,
Chairman and Chief Executive Officer of Lincoln Snacks, Inc., manufacturer of
branded snack foods (1992 - 1994). His career spans 36 years at Stouffers and
Nestle with 18 of the years as Chief Executive Officer. Currently serves as
Director of DenAmerica Corp., J.B. Williams Company, Inc., Fountainhead Water
Company and Exigent Diagnostics. Age 65.

Hansel B. Millican, Jr.
Rochester Button Company
1328 Broadway (Suite 816)
New York, New York

President and Chief Executive Officer of Rochester Button Company.  Age 70.

Thomas J. Neff
Spencer Stuart 
277 Park Avenue
New York, New York

Chairman of Spencer Stuart, an executive search consulting firm. Currently
serves as Director of Ace, Ltd. (NYSE). Age 61.

                                       12






<PAGE>


For the Fiscal Year Ended October 31, 1998-Affiliated Fund; International Series
    For the Fiscal Year Ended November 30, 1998 - Growth Opportunities Fund;
           Large-Cap Series; Small-Cap Value Series; High Yield Fund

The following table sets forth the compensation accrued for each Fund's outside
directors/trustees.

<TABLE>
<CAPTION>
                                                     Aggregate
Name of Director                      Compensation Accrued by each Fund(1)
- ----------------         ----------------------------------------------------------------------
                        Affiliated          Research            Investment           Securities
                        Fund                Fund                Trust                Trust     
                        ----------          --------            ----------           ----------
<S>                     <C>                 <C>                 <C>                  <C>   
E. Thayer Bigelow       $24,154             $1,772              $5,586               $1,235
William H. T. Bush*     $ 6,971             $  512              $2,141               $  356
Robert B. Calhoun**     $ 9,506             $  698              $2,724               $  486
Stewart S. Dixon        $23,766             $1,744              $5,473               $1,215
John C. Jansing(4)      $23,449             $1,721              $5,400               $1,199
C. Alan MacDonald       $23,440             $1,720              $5,375               $1,198
Hansel B. Millican, Jr. $   449             $1,721              $5,400               $1,199
Thomas J. Neff          $23,871             $1,752              $5,497               $1,220
</TABLE>

 *Elected  as of August 13, 1998
**Elected as of June 17, 1998

The following table sets forth information with respect to the equity-based
benefits accrued for outside directors/trustees by the Lord Abbett-sponsored
funds.

<TABLE>
<CAPTION>
Name of Director        Pension or Retirement Benefits
- ----------------        Accrued by each Fund and All Other
                        Lord Abbett-sponsored Funds(2)
                        ----------------------------------
<S>                             <C>      
E. Thayer Bigelow               $17,068  
William H.T. Bush*              $0       
Robert B. Calhoun**             $0       
Stewart S. Dixon                $32,190  
John C. Jansing(4)              $45,085  
C. Alan MacDonald               $30,703  
Hansel B. Millican, Jr.         $37,747  
Thomas J. Neff                  $19,853  
</TABLE>



The following table sets forth the total compensation payable by such funds to
the outside director/trustees. No director/trustee of the funds associated with
Lord Abbett and no officer of the funds received any compensation from the funds
for acting as a director or officer.


<TABLE>
<CAPTION>
                        For Year Ended October 31 1998
                        Total Compensation Accrued by each Fund and
Name of Director        Twelve Other Lord Abbett-sponsored Funds(3)
- ----------------        -------------------------------------------
<S>                                     <C>      
E. Thayer Bigelow                       $57,400   
William H.T. Bush*                      $27,500   
Robert B. Calhoun**                     $33,500   
</TABLE>

                                       13





Page>



<TABLE>

<S>                                     <C>      
Stewart S. Dixon                        $56,500   
John C. Jansing(4)                      $55,500   
C. Alan MacDonald                       $55,000   
Hansel B. Millican, Jr.                 $55,500   
Thomas J. Neff                          $56,500   
</TABLE>

(1) Outside directors' fees, including attendance fees for board and committee
    meetings, are allocated among all Lord Abbett-sponsored funds based on the
    net assets of each fund. A portion of the fees payable by each Fund to its
    outside directors is being deferred under a plan that deems the deferred
    amounts to be invested in shares of the Fund for later distribution to the
    directors/trustees.

(2) The amounts were accrued by the Lord Abbett-sponsored funds for the 12
    months ended October 31, 1998 with respect to the equity based plans
    established for independent directors in 1996. This plan supercedes a
    previously approved retirement plan for all future directors. Directors
    participating in the retirement plan had the option to convert their accrued
    benefits under the plan. All of the outside directors except one made such
    an election.

(3) This table shows aggregate compensation, including directors/trustees fees
    and attendance fees for board and committee meetings, of a nature referred
    to in footnote one, accrued by the Lord Abbett-sponsored funds during the
    year ended December 31, 1998. The amounts of the aggregate compensation
    payable as of each of their respective 1998 fiscal year ends deemed invested
    in Fund shares, including dividends reinvested and changes in net asset
    value applicable to such deemed investments were:

    For Affiliated Fund, the aggregate compensation payable by the Fund as of
    October 31, 1998 deemed invested in Fund shares, including dividends
    reinvested and changes in net asset value applicable to such deemed
    investments, were: Mr. Bigelow, $105,839; Mr. Bush, $0; Mr. Calhoun, Jr.,
    $6,971; Mr. Dixon, $455,675 ; Mr. Jansing, $455,675; Mr. MacDonald,
    $258,267; Mr. Millican, $460,231; and Mr. Neff, $456,571. If the amounts
    deemed invested in Fund shares were added to each director's actual holdings
    of Fund shares as of November 30, 1998 each would own, the following: Mr.
    Bigelow, 7,269 shares; Mr. Bush, 0 shares; Mr. Calhoun, 478 shares; Mr.
    Dixon, 31,296 shares; Mr. Jansing, 31,296 shares; Mr. MacDonald, 17,738
    shares; Mr. Millican, 31,609 shares; and Mr. Neff, 31,357 shares.

    The amounts of the aggregate compensation payable by the Large-Cap Series as
    of November 30, 1998 deemed invested in Company shares, including dividends
    reinvested and changes in net asset value applicable to such deemed
    investments, were: Mr. Bigelow, $369.71; Mr. Calhoun, $130.87; Mr. Dixon,
    $0; Mr. Jansing, $356.17; Mr. MacDonald, $0; Mr. Millican, $360.68; and Mr.
    Neff, $364.43. If the amounts deemed invested in Company shares were added
    to each director's actual holdings of Company shares as of November 30,
    1998, each would own, the following: Mr. Bigelow, 16.874 shares; Mr.
    Calhoun, 5.973; Mr. Dixon, 132 shares; Mr. Jansing, 1,421.25 shares; Mr.
    MacDonald, $0 shares; Mr. Millican, 16.462 shares; and Mr. Neff, 16.633
    shares.

    The amounts of the aggregate compensation payable by the Growth
    Opportunities Fund as of November 30, 1998 deemed invested in Company
    shares, including dividends reinvested and changes in net asset value
    applicable to such deemed investments, were: Mr. Bigelow, $0; Mr. Dixon, $0;
    Mr. Jansing, $0; Mr. MacDonald, $0; Mr. Millican, $0; and Mr. Neff, $0. If
    the amounts deemed invested in Company shares were added to each director's
    actual holdings of Company shares as of November 30, 1998, each would own,
    the following: Mr. Bigelow, 0 shares; Mr. Dixon, 0 shares; Mr. Jansing,
    607.72 shares; Mr. MacDonald, 0 shares; Mr. Millican, 0 shares; and Mr.
    Neff, 650.57 shares.

    The amounts of the aggregate compensation payable by the Small-Cap Value
    Series as of November 30, 1998 deemed invested in Company shares, including
    dividends reinvested and changes in net asset value applicable to such
    deemedinvestments, were: Mr. Bigelow, $1,035.94; Mr. Calhoun, $513.24; Mr.
    Dixon, $0; Mr. Jansing, $1,004.75; Mr. MacDonald, $0; Mr. Millican,
    $1,004.75; and Mr. Neff, $1,002.98. If the amounts deemed invested in
    Company shares were added to each director's actual holdings of Company
    shares as of November 30, 1998, each would own, the following: Mr. Bigelow,
    72.141 shares; Mr. Calhoun, 35.741; Mr. Dixon, 0 shares; Mr. Jansing, 69.969
    shares; Mr. MacDonald, 0 shares; Mr. Millican, 69.969 shares; and Mr. Neff,
    71.238 shares.

                                     14






<PAGE>



    For the International Series, the amounts of the aggregate compensation
    payable by the Fund as of October 31, 1998 deemed invested in Company
    shares, including dividends reinvested and changes in net asset value
    applicable to such deemed investments, were: Mr. Bigelow, $1,671; Mr. Bush,
    $0; Mr. Calhoun, $264; Mr. Jansing, $25,597; Mr. MacDonald, $10,642; Mr.
    Millican, $24,792; and Mr. Neff, $25,874. If the amounts deemed invested in
    Company shares were added to each director's actual holdings of Company
    shares as of October 31, 1998, each would own, the following: Mr. Bigelow,
    183 shares; Mr. Bush, $0; Mr. Calhoun, 28 shares; Mr. Dixon, 625 shares; Mr.
    Jansing, 7,370 shares; Mr. MacDonald, 1,163 shares; Mr. Millican, 2,709
    shares; and Mr. Neff, 3,273 shares.

(4) Mr. Jansing chose to continue to receive benefits under the retirement plan,
    which provides that outside directors (trustees) may receive annual
    retirement benefits for life equal to their final annual retainer following
    retirement at or after age 72 with at least ten years of service. Thus, if
    Mr. Jansing were to retire and the annual retainer payable by the funds were
    the same as it is today, he would receive annual retirement benefits of
    $50,000.

Except where indicated, the following executive officers of each Fund have been
associated with Lord Abbett for over five years. Of the following, Messrs.
Brown, Fetch, Carper, Gerber, Hilstad, Hudson, McGruder, Morris, and Walsh are
partners of Lord Abbett; the others are employees:

Executive Vice Presidents:
Zane E. Brown, age 47 (International Series )

Robert P. Fetch, age 46 (Large-Cap Series; Small-Cap Value Series) (with Lord
Abbett since 1995 - formerly Managing Director at Prudential Investment Advisors
from 1983 to 1995)

Robert I. Gerber, age 44 (High Yield Fund) (with Lord Abbett since 1997 -
formerly Senior Portfolio Manager at Sanford Bernstein & Co. from 1992 - 1997)

W. Thomas Hudson, Jr. age 57 (Affiliated Fund )

Robert G. Morris, age 54 (Growth Opportunities Fund; High Yield Fund;
International Series; Large-Cap Series; Small-Cap Value Series)

Stephen J. McGruder, age 55 (Growth Opportunities Fund; Large-Cap Series) (with
Lord Abbett since 1995 - formerly Vice President of Wafra Securities from 1988
to 1995)

Vice Presidents:
Paul A. Hilstad, age 56, Vice President and Secretary (all Funds) (with Lord
Abbett since 1995 - formerly Senior Vice President and General Counsel of
American Capital Management & Research, Inc.)

Zane E. Brown, age 47 (Large-Cap Series; Small-Cap Value Series)

Daniel E. Carper, age 47 (all Funds)

Timothy Horan, age 44 (International Series) (with Lord Abbett since 1996-
formerly Senior Manager at Credit Suisse from 1994 to 1995; prior thereto Vice
President at Aubrey G. Lanston & Co. from 1992 to 1994)

                                       15



<PAGE>



Lawrence H. Kaplan, age 43, Vice President and Assistant Secretary (all Funds)
(with Lord Abbett since 1997 - formerly Vice President and Chief Counsel of
Salomon Brothers Asset Management Inc from 1995 to 1997; prior thereto Senior
Vice President, Director and General Counsel of Kidder Peabody Asset Management,
Inc.)

Jerald Lanzotti, age  31 (International Series)

Gregory M. Macosko, age 51 (Large-Cap Series; Small-Cap Value Series)(with Lord
Abbett since 1997 - formerly Analyst with Royce Associates from 1991 to 1997)

Robert G. Morris, age 54 (Affiliated Fund)

A. Edward Oberhaus III, age 39 (all Funds)

Keith F. O'Connor, age 43 (all Funds)

Fernando Saldanha, age 45 (International Series) (with Lord Abbett since 1998 -
formerly Economist and Senior Financial Officer of World Bank (IBRO) from 1988
to 1998)

Eli M. Salzman, age 34 (Affiliated Fund) (with Lord Abbett since 1997 - formerly
Vice President of Mutual of America Capital Corp.; prior thereto Vice President
of Mitchell Hutchins Asset Mgt. from 1986 to 1996)

Christopher J. Towle, age 41 (International Series)

John J. Walsh, age 62 (all Funds); and

Treasurer:
Donna M. McManus, age 38, Treasurer (all Funds) (with Lord Abbett since 1996 -
formerly a Senior Manager at Deloitte & Touche LLP).

As of February 12, 1999, our officers and directors owned as a group less than
1% of each Fund's shares. As of February 12, 1999, there were no record holders
of 5% or more of each Fund's outstanding shares.

The Funds' By-Laws provide that each Fund shall not hold a meeting of its
stockholders in any year unless one or more matters are required to be acted on
by stockholders under the Investment Company Act of 1940, as amended (the
"Act"), or unless called by a majority of the Board of Directors (Trustees) or
by shareholders holding at least one quarter of the stock of each Fund
outstanding and entitled to vote at the meeting.

                                       3.
                     Investment Advisory and Other Services

As described under "Management" in the Prospectus, Lord Abbett is the investment
manager of the Funds. Ten of the general partners of Lord Abbett are officers
and/or board members of the Funds, as follows: Zane E. Brown; Daniel E. Carper;
Robert S. Dow; Robert P. Fetch; Robert I. Gerber; Paul A. Hilstad; W. Thomas
Hudson; Stephen J. McGruder; Robert G. Morris; Christopher J. Towle; and John J.
Walsh.

The other general partners who are neither officers nor directors of the Funds
are Stephen Allen, John E. Erard, Daria L. Foster, Michael B. McLaughlin, R.
Mark Pennington, and Robert J. Noelke. The address of each partner is The
General Motors Building, 767 Fifth Avenue, New York, New York 10153-0203.

The services performed by Lord Abbett are described in the Prospectus under
"Management." Under its Management Agreement, Affiliated Fund pays Lord Abbett a
monthly fee, based on average daily net assets for each month, at the annual
rate of .5 of 1% of the portion of its net assets not in excess of $200,000,000;
 .4 of 1% of the portion in excess of $200,000,000, but not in excess of
$500,000,000; .375 of 1% of the portion in excess

                                       16





<PAGE>




of $500,000,000, but not in excess of $700,000,000; .35 of 1% of the portion in
excess of $700,000,000, but not in excess of $900,000,000; and .3 of 1% of the
portion in excess of $900,000,000.

Under its Management Agreement: 

Growth Opportunities Fund is obligated to pay Lord Abbett a monthly fee, based
on average daily net assets for each month, at the annual rate of .90 of 1% of
the Fund's average daily net assets. On September 15, 1998, the Fund's
shareholders voted to raise the management fee to .90 of 1%.

High Yield Fund is obligated to pay Lord Abbett a monthly fee, based on average
daily net assets for each month, at the annual rate of .60 of 1% of its average
daily net assets.

Large-Cap Series and Small-Cap Value Series are each obligated to pay Lord
Abbett a monthly fee, based on average daily net assets for each month, at the
annual rate of .75 of 1% of each's average daily net assets. International Fund
is obligated to pay Lord Abbett a monthly fee, based on average daily net assets
for each month, at the annual rate of .75 of 1%.

The following is a summary of the Management Fee for the 1998, 1997 and 1996
fiscal years of the funds:

<TABLE>
<CAPTION>
                                             Gross              Management            Management
        Fund            Fiscal Year     Management Fees         Fees Waived           Fees Paid
        ----            -----------     ---------------         -----------           -----------
<S>                     <C>             <C>                     <C>                   <C>         
Affiliated Fund         1998            $ 26,317,934            $ 0                   $ 26,317,934
                        1997            $ 22,192,209            $ 0                   $ 22,192,209
                        1996            $ 17,683,694            $ 0                   $ 17,683,694

Growth                  1998            $     16,316            $ 16,316              $ 0
Opportunities           1997            $     10,844            $ 10,844              $ 0
Fund                    1996            $      8,249            $  8,249              $ 0

International           1998            $    700,368            $ 0                   $    700,368
Series                  1997            $    127,715            $ 0                   $    127,715

Small-Cap Value         1998            $  4,270,210            $ 0                   $  4,270,210
Series                  1997            $  1,075,019            $ 0                   $  1,075,019
                        1996            $     24,461            $ 24,461              $  0

Large-Cap               1998            $    768,947            $ 0                   $    768,547
Series                  1997            $    334,394            $ 0                   $    334,394
                        1996            $     78,668            $ 40,304              $     38,364
</TABLE>



Lord Abbett has entered into an agreement with Fuji-Lord Abbett International
Ltd. ("the Sub-Adviser"), under which the Sub-Adviser provides Lord Abbett with
advice with respect to the International Series' assets. The Sub-Adviser is
controlled by Fuji Investment Management Co. (Tokyo). Fuji Bank Limited of
Tokyo, Japan ("Fuji Bank") directly owned 40% of the outstanding voting stock of
the Sub-Adviser. Fuji Investment Management Co. (Tokyo) is an affiliate of Fuji
Bank. Lord Abbett owns approximately 27% of such outstanding voting stock. As of
November 30, 1998, the Sub-Adviser manages approximately $915 million, which is
invested globally. The Sub-Adviser furnishes Lord Abbett with advice and
recommendations with respect to the International Fund's assets, including
advice about the allocation of investments among foreign securities markets and
foreign equity and debt securities markets and foreign equity and debt
securities and, subject to consultation with Lord Abbett, advice as to cash
holdings and what securities in the portfolio should be purchased, held or
disposed of. The Sub-Adviser also gives advice with respect to foreign currency

                                       17






<PAGE>


matters. Lord Abbett is obligated to pay the Sub-Adviser a monthly fee, based on
average daily net assets for each month, at the annual rate of .375 of 1%. For
the fiscal year ended October 31, 1998 and for the period December 13, 1996
(commencement of operations) to October 31, 1997, the fees paid to the
Sub-Adviser by Lord Abbett were $350,184 and $63,857, respectively.

Each Fund's fee is allocated among all of its classes based on each Fund's
proportionate share of such daily net assets.

In addition, each Fund is obligated to pay all expenses not expressly assumed by
Lord Abbett, including, without limitation, outside directors' fees and
expenses, association membership dues, legal and auditing fees, taxes, transfer
and dividend disbursing agent fees, shareholder servicing costs, expenses
relating to shareholder meetings, expenses of preparing, printing and mailing
stock certificates and shareholder reports, expenses of registering our shares
under federal and state securities laws, expenses of preparing, printing and
mailing prospectuses to existing shareholders, insurance premiums, brokerage and
other expenses connected with executing portfolio transactions.

Deloitte & Touche LLP, Two World Financial Center, New York, New York 10281 are
the independent auditors for each Fund and must be approved at least annually by
each Fund's Board of Directors (Trustees) to continue in such capacity. They
perform audit services for each Fund including the audits of financial
statements included in each Fund's annual report to shareholders.

The Bank of New York ("BNY"), 48 Wall Street, New York, New York 10268, is each
Fund's custodian. In accordance with the requirements of Rule 17f-5, each Fund's
directors (trustees) have approved arrangements permitting each Fund's foreign
assets not held by BNY or its foreign branches to be held by certain qualified
foreign banks and depositories.

The Sub-Custodians of BNY are:

Euro-Clear (a transnational securities depository); Australia: ANZ Banking
Group; Austria: Creditanstalt-Bankverein; Canada: Canadian Imperial Bank of
Commerce; Chile: Citibank, N.A.; Czech Republic: Ceskoslovenska Obchodni Banka;
Denmark: Den Danske Bank; Finland: Union Bank of Finland; Germany: J.P. Morgan
GmbH; Greece: National Bank of Greece S.A.; Hong Kong, Indonesia, Philippines,
Taiwan and Thailand: Hong Kong & Shanghai Banking Corp.; Hungary: Citibank
Budapest Rt; India: Hong Kong and Shanghai Banking Corporation; Ireland: Allied
Irish Banks, PLC; Israel: Bank Leumi LE-Israel B.M.; Japan: The Fuji Bank, Ltd.;
Jordan: Citibank, N.A.; Korea: Bank of Seoul; Luxembourg: Banque Internationale
A Luxembourg, S.A.; Mexico: Citibank, N.A.; Morocco: Banque Commerciale du
Maroc; Netherlands: Bank van Haften Labouchere; New Zealand: Anz Banking Group
Ltd.; Norway: Den Norske Bank; Pakistan: Citibank, N.A.; Peru: Citibank, N.A.;
Poland: Bank Handlowy w Warszawie S.A.; Portugal: Banco Espirito Santo E
Comercial de Lisboa; Malaysia, Singapore: Development Bank of Singapore; South
Africa: The First National Bank of Southern Africa; Sri Lanka: Hong Kong and
Shanghai Banking Corporation; Sweden: Skandinaviska Enskilda Banken;
Switzerland: Bank Leu; Turkey: Citibank, N.A.; Venezuela: Citibank, N.A.

                                       4.
                             Portfolio Transactions

Our policy is to obtain best execution on all our portfolio transactions, which
means that we seek to have purchases and sales of portfolio securities executed
at the most favorable prices, considering all costs of the transaction including
brokerage commissions and dealer markups and markdowns and taking into account
the full range and quality of the brokers' services. Consistent with obtaining
best execution, we generally pay, as described below, a higher commission than
some brokers might charge on the same transactions. Our policy with respect to
best execution governs the selection of brokers or dealers and the market in
which the transaction is executed. To the extent permitted by law, we may, if
considered advantageous, make a purchase from or sale to another Lord
Abbett-sponsored fund without the intervention of any broker-dealer.

Broker-dealers are selected on the basis of their professional capability and
the value and quality of their brokerage and research services. Normally, the
selection is made by traders who are officers of the Fund and also are employees
of Lord Abbett. These traders do the trading as well for other accounts --
investment companies (of which they are also officers) and other investment
clients -- managed by Lord Abbett. They are responsible for obtaining best
execution.

                                       18








<PAGE>




We pay a commission rate that we believe is appropriate to give maximum
assurance that our brokers will provide us, on a continuing basis, the highest
level of brokerage services available. While we do not always seek the lowest
possible commissions on particular trades, we believe that our commission rates
are in line with the rates that many other institutions pay. Our traders are
authorized to pay brokerage commissions in excess of those that other brokers
might accept on the same transactions in recognition of the value of the
services performed by the executing brokers, viewed in terms of either the
particular transaction or the overall responsibilities of Lord Abbett with
respect to us and the other accounts they manage. Such services include showing
us trading opportunities including blocks, a willingness and ability to take
positions in securities, knowledge of a particular security or market proven
ability to handle a particular type of trade, confidential treatment, promptness
and reliability.

Some of these brokers also provide research services at least some of which are
useful to Lord Abbett in their overall responsibilities with respect to us and
the other accounts they manage. Research includes the furnishing of analyses and
reports concerning issuers, industries, securities, economic factors and trends,
portfolio strategy and the performance of accounts and trading equipment and
computer software packages, acquired from third-party suppliers, that enable
Lord Abbett to access various information bases. Such services may be used by
Lord Abbett in servicing all their accounts, and not all of such services will
necessarily be used by Lord Abbett in connection with their management of the
Fund; conversely, such services furnished in connection with brokerage on other
accounts managed by Lord Abbett may be used in connection with their management
of the Fund, and not all of such services will necessarily be used by Lord
Abbett in connection with their advisory services to such other accounts. We
have been advised by Lord Abbett that research services received form brokers
cannot be allocated to any particular account, are not a substitute for Lord
Abbett's services but are supplemental to their own research effort and, when
utilized, and are subject to internal analysis before being incorporated by Lord
Abbett into their investment process. As a practical matter, it would not be
possible for Lord Abbett to generate all of the information presently provided
by brokers. While receipt of research services from brokerage firms has not
reduced Lord Abbett's normal research activities, the expenses of Lord Abbett
could be materially increased if it attempted to generate such additional
information through its own staff and purchased such equipment and software
packages directly from the suppliers.

No commitments are made regarding the allocation of brokerage business to or
among brokers, and trades are executed only when they are dictated by investment
decisions of Lord Abbett to purchase or sell portfolio securities.

If two or more broker-dealers are considered capable of offering the equivalent
likelihood of best execution, the broker-dealer who has sold our shares and/or
shares of other Lord Abbett-sponsored funds may be preferred.

If other clients of Lord Abbett buy or sell the same security at the same time
as we do, transactions will, to the extent practicable, be allocated among all
participating accounts in proportion to the amount of each order and will be
executed daily until filled so that each account shares the average price and
commission cost of each day. Other clients who direct that their brokerage
business be placed with specific brokers or who invest through wrap accounts
introduced to Lord Abbett by certain brokers may not participate with us in the
buying and selling of the same securities as described above. If these clients
wish to buy or sell the same security as we do, they may have their transactions
executed at times different from our transactions and thus may not receive the
same price or incur the same commission cost as we do.

We will not seek "reciprocal" dealer business (for the purpose of applying
commissions in whole or in part for our benefit or otherwise) from dealers as
consideration for the direction to them of portfolio business.

For the fiscal years ended October 31, 1998, 1997 and 1996, Affiliated Fund paid
total commissions to independent dealers of $12,832,030, $7,681,037 and
$5,897,259, respectively.

For the fiscal year ended November 30, 1998, 1997 and 1996, Growth Opportunities
Fund paid total commissions to independent broker-dealers of $12,741, $3,678 and
$2,155, respectively.

For the fiscal year ended October 31, 1998 and the period December 13, 1996
(commencement of operations) through October 31, 1997, International Series paid
total commissions to independent broker-dealers of $         and $        ,
respectively.

                                       19





<PAGE>




For the fiscal years ended November 30, 1998, 1997 and 1996, the Large-Cap
Series paid total commissions to independent broker-dealers of $321,279,
$88,234, and $321,279, respectively.

For the fiscal years ended November 30, 1998, November 30, 1997 and the period
December 13, 1995 (commencement of operations) to November 30, 1996, the
Small-Cap Value Series paid total commissions to independent broker-dealers of
$1,564,340, $1,812,425 and $45,266, respectively.

                                       5.
                             Purchases, Redemptions
                            and Shareholder Services

Information concerning how we value our shares for the purchase and redemption
of our shares is contained in the Prospectus under "Purchases" and
"Redemptions," respectively.

As disclosed in the Prospectus, we calculate our net asset value as of the close
of the New York Stock Exchange ("NYSE") on each day that the NYSE is open for
trading by dividing our total net assets by the number of shares outstanding at
the time of calculation. The NYSE is closed on Saturdays and Sundays and the
following holidays -- New Year's Day, Martin Luther King, Jr. Day, Presidents'
Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving and
Christmas.

Each Fund values its portfolio securities at market value as of the close of the
NYSE. Market value will be determined as follows: securities listed or admitted
to trading privileges on the New York or American Stock Exchange or on the
NASDAQ National Market System are valued at the last sales price, or, if there
is no sale on that day, at the mean between the last bid and asked prices, or,
in the case of bonds, in the over-the-counter market if, in the judgment of the
Fund's officers, that market more accurately reflects the market value of the
bonds. Over-the-counter securities not traded on the NASDAQ National Market
System are valued at the mean between the last bid and asked prices. Securities
for which market quotations are not available are valued at fair market value
under procedures approved by the Board of Directors (Trustees).

The net asset value per share for the Class Y shares will be determined by
taking Class Y shares net assets and dividing by shares outstanding. Our Class Y
shares will be offered at net asset value.

Each Fund has entered into a distribution agreement with Lord Abbett Distributor
LLC, a New York limited liability company ("Lord Abbett Distributor") and
subsidiary of Lord Abbett under which Lord Abbett Distributor is obligated to
use its best efforts to find purchasers for the shares of each Fund, and to make
reasonable efforts to sell Fund shares so long as, in Lord Abbett Distributor's
judgment, a substantial distribution can be obtained by reasonable efforts.

Class Y Share Exchanges. The Prospectus describes the Telephone Exchange
Privilege. You may exchange some or all of your Y shares for Y shares of any
Lord Abbett-sponsored funds currently offering Class Y shares to the public.
Currently those other funds consist of Lord Abbett Investment Trust - Core Fixed
Income Series, Strategic Core Fixed Income Series, Bond-Debenture Fund,
Developing Growth Fund, and Mid-Cap Value Fund.

Redemptions. A redemption order is in proper form when it contains all of the
information and documentation required by the order form or supplementally by
Lord Abbett Distributor or the Fund to carry out the order. The signature(s) and
any legal capacity of the signer(s) must be guaranteed by an eligible guarantor.
See each Prospectus for expedited redemption procedures.

The right to redeem and receive payment, as described in each Prospectus, may be
suspended if the NYSE is closed (except for weekends or customary holidays),
trading on the NYSE is restricted or the Securities and Exchange Commission
deems an emergency to exist.

                                       20








<PAGE>




Our Board of Directors (Trustees) may authorize redemption of all of the shares
in any account in which there are fewer than 25 shares (Affiliated Fund, Growth
Opportunities Fund, High Yield Fund, Large-Cap Series, and Small-Cap Value
Series),and 60 shares(International Series). Before authorizing such redemption,
the Board must determine that it is in our economic best interest or necessary
to reduce disproportionately burdensome expenses in servicing shareholder
accounts. At least 6 month's prior written notice will be given before any such
redemption, during which time shareholders may avoid redemption by bringing
their accounts up to the minimum set by the Board.

                                       6.
                                      Taxes

The value of any shares redeemed by each Fund or repurchased or otherwise sold
may be more or less than your tax basis in the shares at the time of
disposition. Any gain will generally be taxable for federal income tax purposes.
Any loss realized on the disposition of a Fund's shares which you have held for
six months or less will be treated for tax purposes as a long-term capital loss
to the extent of any "capital gains distributions" which you received with
respect to such shares. Losses on the sale of shares are not deductible if,
within a period beginning 30 days before the date of the sale and ending 30 days
after the date of the sale, the taxpayer acquires shares that are substantially
identical.

Each Fund will be subject to a four-percent nondeductible excise tax on certain
amounts not distributed or treated as having been distributed on a timely basis
each calendar year. Each Fund intends to distribute to shareholders each year an
amount adequate to avoid the imposition of such excise tax.

The writing of call options and other investment techniques and practices which
a Fund may utilize may create "straddles" for United States federal income tax
purposes and may affect the character and timing of the recognition of gains and
losses by each Fund. Such transactions may increase the amount of short-term
capital gain realized by such Fund, which is taxed as ordinary income when
distributed to shareholders. Limitations imposed by the Internal Revenue Code on
regulated investment companies may restrict a Fund's ability to engage in
transactions in options.

Each Fund may be subject to foreign withholding taxes which would reduce the
yield on its investments. It is generally expected that shareholders of a Fund
who are subject to United States federal income tax will not be entitled to
claim a federal income tax credit or deduction for foreign income taxes paid by
such Fund. However, if at the close of any fiscal year, more than 50% of the
assets of a fund consist of stock or securities of foreign corporations, the
Fund may elect to treat foreign income taxes paid by the Fund as having been
paid directly by its shareholder. If a Fund makes such an election, the
shareholders of the Fund will be required to (I) include in ordinary gross
income (in addition to taxable dividends actually received) their pro rata share
of foreign income taxes paid by the Fund and (ii) treat such pro rata share as
foreign income taxes paid by them. Such shareholders may then use such pro rata
portion of foreign income taxes as foreign tax credits, subject to applicable
limitations, or, alternatively, deduct them in computing their taxable income.
Shareholders who do not itemize deductions for federal income tax purposes will
not be entitled to deduct their pro rata portion of foreign taxes paid by the
Series, although such shareholders will still be required to include their share
of such taxes in gross income. Shareholders who claim a foreign tax credit for
foreign taxes paid by a Fund may be required to treat a portion of the dividends
received from the Fund as separate category income for purposes of computing the
limitations on the foreign tax credit. Tax-exempt shareholders will ordinarily
not benefit from this election. Each year that a Fund qualifies for and makes
the election described above, its shareholders will be notified of the amount of
(i) each shareholder's pro rata share of foreign income taxes paid by the Fund
and (ii) the portion of dividends which represents income from each foreign
country.

Gains and losses realized by each Fund on certain transactions, including sales
of foreign debt securities and certain transactions involving foreign currency,
will be treated as ordinary income or loss for federal income tax purposes to
the extent, if any, that such gains or losses are attributable to changes in
exchange rates for foreign currencies. Accordingly, distributions taxable as
ordinary income will include the net amount, if any, of such foreign exchange
gains and will be reduced by the net amount, if any, of such foreign exchange
losses.

If either Fund purchases shares in certain foreign investment entities, called
"passive foreign investment companies," it may be subject to United States
federal income tax on a portion of any "excess distribution" or gain from the
disposition of such shares, even if such income is distributed as a taxable
dividend by the Fund to its shareholders.

                                       21





<PAGE>




Additional charges in the nature of interest may be imposed on either the Fund
or its shareholders in respect to deferred taxes arising from such distributions
or gains.

If a Fund were to invest in a passive foreign investment company with respect to
which a Fund elected to make a "qualified electing fund" election, in lieu of
the foregoing requirements, the Fund might be required to include in income each
year a portion of the ordinary earnings and net capital gains of the qualified
electing fund, even if such amount were not distributed to a Fund.

Dividends paid by a Fund will qualify for the dividends-received deduction for
corporations to the extent they are derived from dividends paid by domestic
corporations.

The foregoing discussion relates solely to U.S. federal income tax law as
applicable to United States persons (United States citizens or residents and
United States domestic corporations, partnerships, trusts and estates). Each
shareholder who is not a United States person should consult his tax advisor
regarding U.S. and foreign tax consequences of the ownership of shares of a
Fund, including a 30% (or lower treaty rate) United States withholding tax on
dividends representing ordinary income and net short-term capital gains, and the
applicability of United States gift and estate taxes to non-United States gift
and estate taxes to non-United States persons who own Fund shares.

                                       7.
                                Past Performance

Each Fund computes the annual compounded rate of total return for Class Y shares
during specified periods that would equate the initial amount invested to the
ending redeemable value of such investment by adding one to the computed average
annual total return, raising the sum to a power equal to the number of years
covered by the computation and multiplying the result by one thousand dollars,
which represents a hypothetical initial investment. The calculation assumes
deduction of no sales charge from the initial amount invested and reinvestment
of all income dividends and capital gains distributions on the reinvestment
dates at prices calculated as stated in each Prospectus. The ending redeemable
value is determined by assuming a complete redemption at the end of the
period(s) covered by the annual total return computation.

In calculating total returns for Class Y shares no sales charge is deducted from
the initial investment and the return is shown at net asset value. Total returns
also assume that all dividends and capital gains distributions during the period
are reinvested at net asset value per share, and that the investment is redeemed
at the end of the period.

Class Y share performance. Using the computation method described above,
Affiliated Fund's total return for Class Y shares for the period from inception
(March 27, 1998) to October 31, 1998 was (4.77)%. Small-Cap Value Series' total
return for Class Y shares for the period from inception (December 30, 1997) to
November 30, 1998 was (11.87)%. International Series' total return for Class Y
shares for the period from inception (December 30, 1997) to October 31, 1998 was
10.02% (not annualized). Growth Opportunities Fund's total return for Class Y
shares for the period from inception (October 15, 1998) to December 31, 1998 was
36.22%.

Our yield quotation for Class Y shares is based on a 30-day period ended on a
specified date, computed by dividing the net investment income per share earned
during the period by the net asset value per share of such class on the last day
of the period. This is determined by finding the following quotient: take the
dividends and interest earned during the period for the class minus its expenses
accrued for the period and divide by the product of (i) the average daily number
of Class shares outstanding during the period that were entitled to receive
dividends and (ii) the net asset value per share of such class on the last day
of the period. To this quotient add one. This sum is multiplied by itself five
times. Then one is subtracted from the product of this multiplication and the
remainder is multiplied by two. Yields for Class Y shares do not reflect the
deduction of any sales charge.

These figures represent past performance, and an investor should be aware that
the investment return and principal value of a Fund's investment will fluctuate
so that an investor's shares, when redeemed, may be worth more or less than
their original cost. Therefore, there is no assurance that this performance will
be repeated in the future.

                                       22





<PAGE>


                                       8.
                           Information About the Funds

Affiliated Fund is a Maryland Corporation formed in 1934. Small-Cap Value
Series, Large-Cap Series and Growth Opportunities Fund are series of Lord Abbett
Research Fund, Inc., a Maryland corporation organized in 1992. The International
Series is a series of Lord Abbett Securities Trust, a Delaware business trust
organized in 1993. The High Yield Fund is a series of Lord Abbett Investment
Trust, a Delaware business trust organized in 1993.

The directors, trustees and officers of Lord Abbett-sponsored mutual funds,
together with the partners and employees of Lord Abbett, are permitted to
purchase and sell securities for their personal investment accounts. In engaging
in personal securities transactions, however, such persons are subject to
requirements and restrictions contained in the Fund's Code of Ethics which
complies, in substance, with each of the recommendations of the Investment
Company Institute's Advisory Group on Personal Investing. Among other things,
the Code requires that Lord Abbett partners and employees obtain advance
approval before buying or selling securities, submit confirmations and quarterly
transaction reports, and obtain approval before becoming a director of any
company; and it prohibits such persons from investing in a security 7 days
before or after any Lord Abbett-sponsored fund or Lord Abbett-managed account
considers a trade or trades in such security, prohibiting profiting on trades of
the same security within 60 days and trading on material and non-public
information. The Code imposes certain similar requirements and restrictions on
the independent directors and trustees of each Lord Abbett-sponsored mutual fund
to the extent contemplated by the recommendations of such Advisory Group.

                                       23





<PAGE>




                                       9.
                              Financial Statements

The financial statements for the fiscal year ended October 31, 1998, and the
reports of Deloitte & Touche LLP, independent auditors, on such financial
statements contained in the 1998 Annual Report to Shareholders of Lord Abbett
Affiliated Fund, Inc. are incorporated herein by reference to such financial
statements and report in reliance upon the authority of Deloitte & Touche LLP as
experts in auditing and accounting.

The financial statements for the fiscal year ended November 30, 1998, and the
report thereon of Deloitte & Touche LLP, independent auditors, on such financial
statements contained in the 1998 Annual Report to Shareholders of the Lord
Abbett Research Fund, Inc. (which includes Growth Opportunities Fund, formerly,
Mid-Cap Fund, Large-Cap Series, and Small-Cap Value Series), are incorporated
herein by reference to such financial statements and report in reliance upon the
authority of Deloitte & Touche LLP as experts in auditing and accounting.

The financial statements for the fiscal year ended October 31, 1998 and the
report of Deloitte & Touche LLP, independent auditors, on such financial
statements contained in the 1998 Annual Report to Shareholders of Lord Abbett
Securities Trust(which includes International Series) are incorporated herein by
reference to such financial statements and report in reliance upon the authority
of Deloitte & Touche LLP as experts in auditing and accounting.

The financial statements for the fiscal year ended November 30, 1998 and the
report thereon of Deloitte & Touche LLP, independent auditors, on such financial
statements contained in the 1998 Annual Report to Shareholders of the Lord
Abbett Investment Trust (which includes High Yield Fund) are incorporated by
reference to such financial statements and report in reliance upon the authority
of Deloitte & Touche LLP as experts in auditing and accounting.

                                       24



<PAGE>


PART C OTHER INFORMATION

This Post-Effective Amendment No. 24 (the "Amendment") to the Registrant's
Registration Statement relates only to High Yield Fund - class Y.

The other series and classes of shares of the Registrant are listed below and
are offered by the Prospectuses and Statements of Additional Information in
Parts A and B, respectively, of the Post-Effective Amendments to the
Registrant's Registration Statements as identified. The following are separate
series and/or classes of shares of the Registrant. This Amendment does not
relate to, amend or otherwise affect the Prospectuses and Statements of
Additional Information contained in the prior Post-Effective Amendments listed
below, and pursuant to Rule 485(d) under the Securities Act of 1933, does not
affect the effectiveness of such Post-Effective Amendments.


<TABLE>
<CAPTION>

                                                          POST-EFFECTIVE
                                                           AMENDMENT NO.
                                                        -------------------

<S>                                                              <C>
High Yield Fund - classes A, B, C and P                      No. 23
Balanced Series - classes A, B, C and P                      No. 23
Limited Duration Series - classes A, C and P                 No. 23
U.S. Government Securities Series - classes A, B, C and P    No. 23
Core Fixed Income Series - class Y                           No. 23
Strategic Core Fixed Income Series - class Y                 No. 23
</TABLE>

Item 24 Exhibits

(a)  Articles of Incorporation. Incorporated by reference.
(b)  By-Laws. Incorporated by reference to Post-Effective Amendment No. 19 to
     the Registration Statement filed on Form N-1A on December 30, 1998. 
(c)  Instruments Defining Rights of Security Holders. Incorporated by reference.
(d)  Investment Advisory Contracts. Incorporated by reference.
(e)  Underwriting Contracts. Incorporated by reference.
(f)  Bonus or Profit Sharing Contracts. Incorporated by reference.
(g)  Custodian Agreements. Incorporated by reference.
(h)  Other Material Contracts. Incorporated by reference.
(i)  Consent to Legal Opinion. Filed Herewith.
(j)  Consent of Independent Auditors. Incorporated by reference.
(k)  Omitted Financial Statements. Incorporated by reference.
(l)  Initial Capital Agreements. Incorporated by reference.
(m)  Rule 12b-1 Plan. Incorporated by reference.
(n)  Financial Data Schedule. Incorporated by reference.

                                       1


<PAGE>


(o)  Rule 18f-3 Plan. Incorporated by reference.

Item 24. Persons Controlled by or Under Common Control with the Fund

         None.

Item 25. Indemnification

     The Registrant is a Delaware Business Trust established under Chapter 38 of
     Title 12 of the Delaware Code. The Registrant's Declaration and Instrument
     of Trust at Section 4.3 relating to indemnification of Trustees, officers,
     etc. states the following.

     The Trust shall indemnify each of its Trustees, officers, employees and
     agents (including any individual who serves at its request as director,
     officer, partner, trustee or the like of another organization in which it
     has any interest as a shareholder, creditor or otherwise) against all
     liabilities and expenses, including but not limited to amounts paid in
     satisfaction of judgments, in compromise or as fines and penalties, and
     counsel fees reasonably incurred by him or her in connection with the
     defense or disposition of any action, suit or other proceeding, whether
     civil or criminal, before any court or administrative or legislative body
     in which he or she may be or may have been involved as a party or otherwise
     or with which he or she may be or may have been threatened, while acting as
     Trustee or as an officer, employee or agent of the Trust or the Trustees,
     as the case may be, or thereafter, by reason of his or her being or having
     been such a Trustee, officer, employee or agent, except with respect to any
     matter as to which he or she shall have been adjudicated not to have acted
     in good faith in the reasonable belief that his or her action was in the
     best interests of the Trust or any Series thereof. Notwithstanding anything
     herein to the contrary, if any matter which is the subject of
     indemnification hereunder relates only to one Series (or to more than one
     but not all of the Series of the Trust), then the indemnity shall be paid
     only out of the assets of the affected Series. No individual shall be
     indemnified hereunder against any liability to the Trust or any Series
     thereof or the Shareholders by reason of willful misfeasance, bad faith,
     gross negligence or reckless disregard of the duties involved in the
     conduct of his or her office. In addition, no such indemnity shall be
     provided with respect to any matter disposed of by settlement or a
     compromise payment by such Trustee, officer, employee or agent, pursuant to
     a consent decree or otherwise, either for said payment or for any other
     expenses unless there has been a determination that such compromise is in
     the best interests of the Trust or, if appropriate, of any affected Series
     thereof and that such Person appears to have acted in good faith in the
     reasonable belief that his or her action was in the best interests of the
     Trust or, if appropriate, of any affected Series thereof, and did not
     engage in willful misfeasance, bad faith, gross negligence or reckless
     disregard of the duties involved in the conduct of his or her office. All
     determinations that the applicable standards of conduct have been met for
     indemnification hereunder shall be made by (a) a majority vote of a quorum
     consisting of disinterested Trustees who are not parties to the proceeding
     relating to indemnification, or (b) if such a quorum is not obtainable or,
     even if obtainable, if a majority vote of such quorum so directs, by
     independent legal counsel in a written opinion, or (c) a vote of
     Shareholders (excluding Shares owned of record or beneficially by such
     individual). In addition, unless a matter is disposed of with a court
     determination (i) on the merits that such Trustee, officer, employee or
     agent was not liable or (ii) that such Person was not guilty of willful
     misfeasance, bad faith, gross negligence or reckless disregard of the
     duties involved in the conduct of his or her office, no indemnification
     shall be provided hereunder unless there has been a determination by
     independent legal counsel in a written opinion that such Person did not
     engage in willful misfeasance, bad faith, gross negligence or reckless
     disregard of the duties involved in the conduct of his or her office.

     The Trustees may make advance payments out of the assets of the Trust or,
     if appropriate, of the affected Series in connection with the expense of
     defending any action with respect to which indemnification might be sought
     under this Section 4.3. The indemnified Trustee, officer, employee or agent
     shall give a written undertaking to reimburse the Trust or the Series in
     the event it is subsequently determined that he or she is not entitled to


                                       2




<PAGE>


     such indemnification and (a) the indemnified Trustee, officer, employee or
     agent shall provide security for his or her undertaking, (b) the Trust
     shall be insured against losses arising by reason of lawful advances, or
     (c) a majority of a quorum of disinterested Trustees or an independent
     legal counsel in a written opinion shall determine, based on a review of
     readily available facts (as opposed to a full trial-type inquiry), that
     there is reason to believe that the indemnitee ultimately will be found
     entitled to indemnification. The rights accruing to any Trustee, officer,
     employee or agent under these provisions shall not exclude any other right
     to which he or she may be lawfully entitled and shall inure to the benefit
     of his or her heirs, executors, administrators or other legal
     representatives.

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

Item 26. Business and Other Connections of Investment Adviser

     Lord, Abbett & Co. acts as investment manager and/or principal underwriter
     for twelve other Lord Abbett open-end investment companies (of which it is
     principal underwriter for thirteen), and, as of September 30, 1998, as
     investment adviser to approximately 8,330 private accounts. Other than
     acting as Trustees (directors) and/or officers of open-end investment
     companies managed by Lord, Abbett & Co., none of Lord, Abbett & Co.'s
     partners has, in the past two fiscal years, engaged in any other business,
     profession, vocation or employment of a substantial nature for his own
     account or in the capacity of director, officer, employee, partner or
     trustee of any entity.


Item 27. Principal Underwriter

(a)  Lord Abbett Affiliated Fund, Inc.
     Lord Abbett Bond-Debenture Fund, Inc.
     Lord Abbett Mid-Cap Value Fund, Inc.
     Lord Abbett Developing Growth Fund, Inc.
     Lord Abbett Tax-Free Income Fund, Inc.
     Lord Abbett Government Securities Money Market Fund, Inc.
     Lord Abbett Tax-Free Income Trust
     Lord Abbett Global Fund, Inc.
     Lord Abbett Equity Fund
     Lord Abbett Series Fund, Inc.
     Lord Abbett Research Fund, Inc.
     Lord Abbett Securities Trust
     
     Investment Advisor
     American Skandia Trust (Lord Abbett Growth and Income Portfolio)
     
(b)  The partners of Lord, Abbett & Co. are:



                                       3


<PAGE>


<TABLE>
<CAPTION>

Name and Principal      Positions and Offices
Business Address        with Registrant      
- ------------------    --------------------------
<S>                    <C>
Robert S. Dow           Chairman and President
Robert I. Gerber        Executive Vice President
Robert G. Morris        Executive Vice President
Paul A. Hilstad         Vice President & Secretary
Zane E. Brown           Vice President
Daniel E. Carper        Vice President
W. Thomas Hudson, Jr.   Vice President
</TABLE>

     The other general partners of Lord Abbett & Co. who are neither officers
     nor directors of the Registrant are Stephen Allen, John E. Erard, Robert P.
     Fetch, Daria L. Foster, Stephen J. McGruder, Michael McLaughlin, Robert J.
     Noelke, R. Mark Pennington, Christopher Towle and John J. Walsh.

     Each of the above has a principal business address at 767 Fifth Avenue, New
     York, NY 10153

(c)  Not applicable

Item 28. Location of Accounts and Records

     Registrant maintains the records, required by Rules 31a - 1(a) and (b), and
     31a - 2(a) at its main office.

     Lord, Abbett & Co. maintains the records required by Rules 31a - 1(f) and
     31a - 2(e) at its main office.

     Certain records such as correspondence may be physically maintained at the
     main office of the Registrant's Transfer Agent, Custodian, or Shareholder
     Servicing Agent within the requirements of Rule 31a-3.

Item 29. Management Services

     None.

Item 30. Undertakings

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

(b)  The Registrant undertakes, if requested to do so by the holders of at least
     10% of the registrant's outstanding shares, to call a meeting of
     shareholders for the purpose of voting upon the question of removal of a
     director or directors and to assist in communications with other
     shareholders as required by Section 16(c).



                                       4




<PAGE>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Fund certifies that it meets all of the
requirements for effectiveness of this registration statement under rule 485(b) 
under the Securities Act and has duly caused this Registration Statement to be
signed on its behalf by the undersigned, duly authorized, in the City of New 
York, and State of New York on the 30th day of April, 1999.

                                             BY: /s/ Lawrence H. Kaplan
                                                --------------------------
                                                Lawrence H. Kaplan
                                                Vice President

                                                LORD ABBETT INVESTMENT TRUST



                                       5


<PAGE>


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

Signatures                             Title                   Date

                                Chairman, President
/s/Robert S. Dow*               and Director/Trustee      April 30, 1999
- ------------------------
Robert S. Dow 

/s/ E. Thayer Bigelow*           Director/Trustee         April 30, 1999    
- ------------------------
E. Thayer Bigelow

/s/William H. T. Bush*           Director/Trustee         April 30, 1999    
- ------------------------
William H. T. Bush

/s/Robert B. Calhoun, Jr*.       Director/Trustee         April 30, 1999    
- ------------------------
Robert B. Calhoun, Jr.                          

/s/Stewart S. Dixon*             Director/Trustee         April 30, 1999    
- ------------------------
Stewart S. Dixon     

/s/John C. Jansing*              Director/Trustee         April 30, 1999    
- ------------------------
John C. Jansing                                 

/s/C. Alan MacDonald*            Director/Trustee         April 30, 1999    
- ------------------------
C. Alan MacDonald                               

/s/Hansel B. Millican, Jr*.      Director/Trustee         April 30, 1999   
- ------------------------
Hansel B. Millican, Jr.                         

/s/Thomas J. Neff*               Director/Trustee         April 30, 1999   
- ------------------------
Thomas J. Neff                                  


*BY:    /s/ Lawrence H. Kaplan
        ------------------------
        Lawrence H. Kaplan
        Attorney-in-Fact



                                       6




<PAGE>

        April 27, 1999


Lord Abbett Investment Trust
The GM Building
767 Fifth Avenue
New York, New York 10153-0203

Dear Sirs:

         You have requested our opinion in connection with your filing of
Post-Effective Amendment No. 24 to the Registration Statement on Form N-1A (the
"Post-Effective Amendment") under the Investment Company Act, as amended (the
"Act"), of Lord Abbett Investment Trust, a Delaware business trust (the
"Company"), and in connection therewith your registration of shares of capital
stock, without par value, of the Company (the "Shares").

         We have examined and relied upon originals, or copies certified to our
satisfaction, of such company records, documents, certificates and other
instruments as in our judgment are necessary or appropriate to enable us to
render the opinion set forth below.



<PAGE>


       We are of the opinion that the Shares issued in the continuous offering
have been duly authorized and, assuming the issuance of the Shares for cash at
net asset value and receipt by the Company of the consideration therefor as set
forth in the Post-Effective Amendment and to the extent such Shares remain
outstanding, the Shares have been and will be validly issued, fully paid and
nonassessable.

         We express no opinion as to matters governed by any laws other than
Chapter 38 of Title 12 of the Delaware Code entitled "Treatment of Delaware
Business Trusts" and the federal laws of the United States. We consent to the
filing of this opinion solely in connection with the Post-Effective Amendment.
In giving such consent, we do not hereby admit that we come within the category
of persons whose consent is required under Section 7 of the Act or the rules and
regulations of the Securities and Exchange Commission thereunder.

                                            Very truly yours,

                                            Debevoise & Plimpton




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