LORD ABBETT SECURITIES TRUST
497, 1998-03-16
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LORD ABBETT
SECURITIES TRUST
The General Motors Building
767 Fifth Avenue
New York, NY 10153-0203
800-426-1130

The Alpha  Series  ("we" or the  "Series")  is a separate  series of Lord Abbett
Securities Trust (the "Fund").  The Fund currently consists of five series. Only
shares of the Alpha Series are being offered by this Prospectus.  The Series has
three  classes  called Class A, B, and C shares,  which provide  investors  with
different  options in purchasing  shares of the Series.  See  "Purchases"  for a
description of these choices.

We seek long-term  capital  appreciation.  The Series is designed to invest in a
diversified  portfolio of underlying  mutual funds,  all of which are members of
the Lord Abbett Family of Funds. Currently, the Series invests in three of these
underlying mutual funds (the" Underlying Funds"). There can be no assurance that
we will achieve our objective.

This Prospectus  sets forth  concisely the information  about the Series and the
Fund that a  prospective  investor  should  know  before  investing.  Additional
information about the Series and the Fund has been filed with the Securities and
Exchange Commission.  The Statement of Additional Information is incorporated by
reference into this Prospectus and may be obtained,  without charge,  by writing
to the Fund or by calling 800-874-3733. Ask for "Part B of the Prospectus -- The
Statement of Additional  Information."  The date of this  Prospectus  and of the
Statement of Additional Information is March 1, 1998.

PROSPECTUS  Investors  should  read  and  retain  this  Prospectus.  Shareholder
inquiries should be made in writing to the Fund or by calling 800-821-5129.  You
can also make inquiries through your broker-dealer.

Shares of the  Series are not  deposits  or  obligations  of, or  guaranteed  or
endorsed by, any bank,  and the shares are not federally  insured by the Federal
Deposit Insurance  Corporation,  the Federal Reserve Board, or any other agency.
An  investment  in the Series  involves  risks,  including  the possible loss of
principal.

CONTENTS       PAGE

        1       Fee Table       2
        2       Investment Objective    3
        3       How We Invest   3
        4       Purchases       7
        5       Shareholder Services    14
        6       Our Management  15
        7       Dividends, Capital Gains
                Distributions and Taxes 16
        8       Redemptions     16
        9       Performance     17

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

<PAGE>
1 FEE TABLE

A summary of expenses of the Alpha Series is set forth in the table  below.  The
example should not be considered a  representation  of past or future  expenses.
Actual expenses may be greater or less than those shown.
<TABLE>
<CAPTION>

ALPHA SERIES                            Class A        Class B                       Class C
                                        Shares         Shares                        Shares
<S>                                     <C>            <C>                           <C>
Shareholder Transaction Expenses(1)
(as a percentage of offering price)
Maximum Sales Load(2) on Purchases
(See "Purchases")                       5.75%          None                          None

Deferred Sales Load(2) (See "Purchases")None           5% if shares are redeemed     1% if shares
                                                       before 1st anniversary        are redeemed
                                                       of purchase, declining        before 1st anniversary
                                                       to 1% before 6th              of purchase
                                                       anniversary and
                                                       eliminated on and
                                                       after 6th anniversary(3)

Annual Fund Operating Expenses(4)
(as a percentage of average net assets)
Management Fees (after waiver)
  (See "Our Management")(5)             0.00%          0.00%                         0.00%
12b-1 Fees (See "Purchases")(1)(2)      0.25%          1.00%                         1.00%
Other Expenses  (after subsides)
  (See "Our Management")                0.00%          0.00%                         0.00%
Total Operating Expenses                0.25%          1.00%                         1.00%

</TABLE>

While each class of shares of the Alpha  Series is expected to operate  with the
direct total operating  expenses shown above ("each Alpha class expense ratio"),
shareholders  in the Alpha Series bear  indirectly the Class Y share expenses of
the  Underlying  Funds  in which  the  Alpha  Series  invests  exclusively.  The
following  chart  provides the expense  ratio for each of the  Underlying  Funds
invested in by the Alpha Series,  as well as the percentage of the Alpha Series'
net assets proposed to be initially invested in each Underlying Fund:

                                 Underlying Funds'   Percentage of Alpha Series'
                                  Expense Ratios      Net Assets

Lord Abbett Developing Growth         .88%                30%
Lord Abbett Research Fund
  (Small-Cap Series)                 1.15%                30%
Lord Abbett Securities Trust
  (International Series)             1.10%                40%
                 100%

Based on these figures, the average weighted Class Y share expense ratio for the
Underlying Funds in which Alpha Series invests is 1.05% (the "underlying expense
ratio").  This figure is only an approximation  of the Alpha Series'  underlying
expense  ratio,  since the assets of the Alpha  Series  invested  in each of the
Underlying Funds change daily.

Example:  Using the  underlying  expense  ratio  combined  with each Alpha class
expense ratio,  the following  example  illustrates  the expenses that you would
incur if you assume Alpha Series'  annual return is 5% and there is no change in
the  level  of  expenses  described  above.  For  a  $1,000   investment,   with
reinvestment  of all  dividends and  distributions,  you would pay the following
total expenses assuming redemption on the last day of each period indicated.

Alpha Series    1 year  3 years    Example: You would pay  1 year  3 years
Class A shares  $70     $97        the expenses in the     $70     $97
Class B shares  $71     $95        two right columns on    $21     $65
Class C shares  $31     $65        the same investment,    $21     $65
                                   assuming no redemption:

(1)  Although the Alpha Series does not, with respect to the Class B and Class C
     shares,  charge a front-end  sales charge,  investors  should be aware that
     long-term  shareholders  may pay, under each Rule 12b-1 plan  applicable to
     the  Class B and  Class C shares  of the  Alpha  Series  (both of which pay
     annual 0.25% service and 0.75%  distribution  fees), more than the economic
     equivalent  of the maximum  front-end  sales charge as permitted by certain
     rules of the National  Association of Securities  Dealers,  Inc.  Likewise,
     with respect to Class A shares,  investors  should be aware that,  over the
     long  term,  such  maximum  may be  exceeded  due to the  Rule  12b-1  plan
     applicable to certain net asset value Class A share purchases which permits
     the Alpha Series to pay up to 0.50% in total annual fees,  half for service
     and the other half for distribution.  The 12b-1 fees for the Class A shares
     are based on estimated fees for the current fiscal year.

(2)  Sales  "load" is referred to as sales  "charge,"  "deferred  sales load" is
     referred to as  "contingent  deferred  sales charge" (or "CDSC") and "12b-1
     fees"  which  consist  of a  "service  fee"  and a  "distribution  fee" are
     referred to by either or both of these terms where appropriate with respect
     to Class A, Class B and Class C shares throughout this Prospectus.

(3)  Class B shares will  automatically  convert to Class A shares on the eighth
     anniversary of the purchase of Class B shares.

(4)  For Class A, B and C shares,  the annual  operating  expenses  shown in the
     summary have been estimated and include  reductions due to subsidization of
     the Series' expenses by the Underlying Funds.

(5)  The Alpha Series is obligated to pay Lord,  Abbett & Co. ("Lord  Abbett") a
     management  fee of .50 of 1% for the allocation of the Series' assets among
     the Underlying Funds. However, Lord Abbett anticipates waiving this fee for
     the current fiscal year of the Series.

The  foregoing  is provided  to give  investors  a better  understanding  of the
expenses that are incurred by an investment in the Series.

<PAGE>

2 INVESTMENT OBJECTIVE

Our investment objective is to seek long-term capital  appreciation.  In pursuit
of this objective,  the Series over time will have volatility  approximating the
unmanaged Salomon Extended Market Index. For example, this index since inception
(January 1, 1990) has had a volatility with respect to its historical annualized
return  through  December 31, 1997 within a range of 3% to 21%. Also, in pursuit
of this objective, the Series over time will seek to approximate the foreign and
domestic investment balance of this index (if not its exact holdings) within the
confines of the Series' cash flow and desire to avoid  excessive  capital  gains
distributions. Past performance and volatility of the index are no indication of
future  results for the index or the Series.  There can be no assurance that the
Series will achieve either this level of performance or volatility or balance or
its objective.

3 HOW WE INVEST

THE ALPHA SERIES  INVESTS IN A DIVERSIFIED  PORTFOLIO OF UNDERLYING  FUNDS.  The
Alpha Series will invest all of its assets in underlying  mutual funds which are
members of the Lord Abbett Family of Funds. Currently,  the Alpha Series invests
in three Lord Abbett Funds which invest  primarily in  small-capitalized  equity
securities. The following table shows how the Alpha Series' assets are initially
divided among the three Underlying Funds:

INVESTMENT          INITIAL             UNDERLYING FUNDS
CATEGORY            PERCENTAGE OF
                    ALPHA SERIES'
                    NET ASSETS

Small-Cap           30%                 Lord Abbett Developing
Equity Growth                           Growth Fund

Small-Cap           30%                 Lord Abbett Research
Equity Value                            Fund - Small-Cap Series

Small-Cap           40%                 Lord Abbett Securities
Equity International                    Trust - International
                                        Series

As investments for the Alpha Series' portfolio,  the Fund's Trustees have chosen
Lord Abbett  Developing  Growth Fund,  Inc.;  Lord Abbett  Research Fund, Inc. -
Small-Cap Series;  and Lord Abbett Securities Trust - International  Series. The
selection  of the  Underlying  Funds in which the Alpha  Series  portfolio  will
invest,  as well as the maximum and minimum  amounts of the Alpha Series' assets
which can be invested in each  Underlying  Fund are determined from time to time
by the Fund's "management" (i.e., the officers of the Fund on a day-to-day basis
under the overall  supervision  of the Fund's  Trustees  based on the investment
advice of Lord, Abbett & Co. - "Lord Abbett").

From time to time the Alpha Series'  investments in the Underlying  Funds may be
limited by certain  factors and,  therefore,  the Alpha Series'  offering of its
shares to the public may be limited. The Board of Trustees or Directors/Trustees
of any of the Underlying Funds may impose limits on additional  investments in a
particular Underlying Fund. For example,  restrictions on additional investments
in Lord  Abbett  Research  Fund --  Small-Cap  Series  imposed  by its  Board of
Directors could close the Alpha Series'  investment in the Small-Cap Series and,
therefore,  limit Alpha Series' offering of shares to the public. Currently, the
Small-Cap Series is open to the Alpha Series' investment.

IMPLEMENTATION OF POLICIES. The Underlying Funds in which the Series may invest,
as well as certain other investment practices of the Series are described below.
Investors  desiring more  information  about an Underlying  Fund described below
should call 1-800-874-3733 for the Lord Abbett fund's prospectus.

THE ALPHA  SERIES  INVESTS IN THREE  SMALL-CAP  STOCK FUNDS.  Underlying  Funds,
consisting of Lord Abbett Developing Growth Fund,  International  Series of Lord
Abbett  Securities  Trust, and Small-Cap Series of Lord Abbett Research Fund are
long-term  capital  appreciation  mutual funds.  All three funds seek to achieve
their objectives by investing primarily in companies which are small-sized based
on the value of such companies' outstanding stock.

DEVELOPING  GROWTH FUND. The investment  objective of the Lord Abbett Developing
Growth  Fund  is  long-term   growth  of  capital   through  a  diversified  and
actively-managed  portfolio  consisting of developing growth companies,  many of
which  are  traded  over the  counter.  In  pursuing  Developing  Growth  Fund's
objective it invests primarily in the common stocks of companies with long-range
growth  potential,  particularly  smaller  companies  considered  to be  in  the
developing growth phase.

The developing growth phase, as perceived by Lord Abbett, usually is a period of
swift  development,  when growth occurs at a rate rarely  equaled by established
companies in their mature years.  Lord Abbett  Developing Growth Fund focuses on
companies  which it believes are strongly  positioned in this phase.  Of course,
the actual  growth of a company  cannot be foreseen,  and it may be difficult to
determine in which phase a company is presently situated.

INTERNATIONAL  SERIES. The investment  objective of the International  Series of
Lord Abbett Securities Trust is long-term capital  appreciation.  The production
of any current  income is incidental to this  objective,  and the  International
Series  also may invest in  securities  which do not  produce  any  income.  The
International Series normally invests primarily in equity securities of non-U.S.
issuers.

Portfolio  investments  for the  International  Series  will  be made in  equity
securities of companies domiciled in developed  countries,  but investments also
may be made in the  securities of companies  domiciled in developing  countries.
Equity securities include common and preferred stocks,  convertible  securities,
and rights and warrants to purchase common stocks.  Under normal  circumstances,
at least 80% of the total assets of the International Series will be invested in
such  equity  securities  of  companies  which are  domiciled  in at least three
different countries outside the United States.

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

SMALL-CAP SERIES.  The investment  objective of the Small-Cap Series of the Lord
Abbett Research Fund is to seek long-term  capital  appreciation.  The Small-Cap
Series  will  seek  its  objective  through  investments   primarily  in  equity
securities  which are  believed to be  undervalued  in the  marketplace.  In its
search for value, the Small-Cap Series seeks companies which are primarily small
sized,  based on the value of their outstanding stock. These companies are often
out of favor or not closely  followed by investors  and, as a result,  may offer
substantial appreciation potential over time.

Dividend and investment  income is of incidental  importance,  and the Small-Cap
Series may invest in securities  which do not produce any income.  The Small-Cap
Series typically will hold a large,  diversified number of securities identified
through  a  quantitative,  value-driven  investment  strategy.  Up to 35% of the
Small-Cap  Series'  net assets (at the time of  investment)  may be  invested in
securities  (of the type described  above) that are primarily  traded in foreign
countries.

SOME POLICIES COMMON TO THE UNDERLYING FUNDS.

Diversification.  Each Underlying Fund intends to meet the diversification rules
under  Subchapter M of the Internal  Revenue Code.  Each Underlying Fund met the
diversification  rules under  Subchapter M for its last fiscal year.  Generally,
this requires, at the end of each quarter of the taxable year, that (a) not more
than 25% of each  Underlying  Fund's  total assets be invested in any one issuer
and (b) with respect to 50% of each Underlying Fund's total assets, no more than
5% of such  Fund's  total  assets be  invested  in any one  issuer  except  U.S.
Government securities.

Each  Underlying  Fund,  as  a  "diversified"   investment  company,  under  the
Investment Company Act of 1940, is prohibited,  with respect to 75% of the value
of its  total  assets,  from  investing  more  than 5% of its  total  assets  in
securities  of any  one  issuer  other  than  U.S.  Government  securities.  For
diversification purposes, the identification of an "issuer" for the fixed-income
portion of an  Underlying  Fund's  assets will be determined on the basis of the
source of assets and  revenues  committed  to  meeting  interest  and  principal
payments of the securities.  When the assets and revenues of a sovereign state's
political  subdivision are separate from those of the sovereign state government
creating  the  subdivision,  and the  security  is backed only by the assets and
revenues of the subdivision,  then the subdivision  would be considered the sole
issuer.  Similarly,  if a revenue bond is backed only by the assets and revenues
of a nongovernmental user, then such user would be considered the sole issuer.

Illiquid Securities. Each Underlying Fund may invest up to 15% of its net assets
in illiquid securities.

POLICIES FOR SOME OF THE UNDERLYING FUNDS: INTERNATIONAL AND SMALL-CAP SERIES.

When-Issued or Delayed Delivery Securities.  Each Series may purchase securities
on a when-issued  basis and, while awaiting  delivery and before paying for them
("settlement"),  normally may invest in short-term securities.  Each Series does
not start earning interest on these when-issued  securities until settlement and
often they are sold prior to settlement.  During the period between purchase and
settlement,  the value of the securities will fluctuate and assets consisting of
cash and/or marketable securities marked to market daily in an amount sufficient
to make payment at  settlement  will be  segregated at our custodian in order to
pay  for the  commitment.  There  is a risk  that  market  yields  available  at
settlement may be higher than yields obtained on the purchase date,  which could
result in depreciation of value.

Repurchase  Agreements.  Each  Series may, on  occasion,  enter into  repurchase
agreements  whereby the seller of a security  agrees to repurchase that security
at a mutually  agreed-upon  time and price.  The period of  maturity  is usually
quite short,  possibly  overnight  or a few days,  although it may extend over a
number  of  months.  The  resale  price  is in  excess  of the  purchase  price,
reflecting an agreed-upon  rate of return  effective for the period of time each
Series' money is invested in the security.  Each Series'  repurchase  agreements
will at all times be fully  collateralized  in an  amount at least  equal to the
purchase price,  including accrued interest earned on the underlying securities.
The  instruments  held as collateral  are valued daily,  and if the value of the
instruments  declines,  each Series will require additional  collateral.  If the
seller  defaults  and  the  value  of the  collateral  securing  the  repurchase
agreement declines, each Series may incur a loss.

Short-Term Fixed-Income Securities.  The Alpha Series and each of its Underlying
Funds are authorized to invest  temporarily in certain  short-term  fixed income
securities.  Such securities may be used to invest uncommitted cash balances, to
maintain  liquidity  to meet  shareholder  redemptions,  or to take a  temporary
defensive   position   against  market  declines.   These  securities   include:
obligations  of the U.S.  Government  and its  agencies  and  instrumentalities;
commercial paper, bank certificates of deposit,  and bankers'  acceptances;  and
repurchase agreements collateralized by these securities.

Foreign  Currency  Hedging  Techniques.   On  occasion,  the  International  and
Small-Cap  Series  may  utilize  various  foreign  currency  hedging  techniques
described below.

A forward foreign currency contract involves an obligation to purchase or sell a
specific  amount of a currency at a set price on a future date.  Each Series may
enter into forward foreign  currency  contracts in primarily two  circumstances.
First,  when  each  Series  desires  to  "lock  in" the U.S.  dollar  price of a
security.

Second,  each Series may enter into a forward  contract (or use a cross-currency
hedge) to sell the amount of foreign currency approximating the value of some or
all of each Series'  portfolio  securities  denominated in such foreign currency
which it expects to decline against the dollar.

Each Series also may transact in currency put options and write foreign currency
call  options on U.S.  exchanges or U.S.  over-the-counter  markets to protect a
foreign  currency  against a decline against the U.S. dollar. A put option gives
each  Series,  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.

A currency call option written by each Series gives the purchaser,  upon payment
of a premium,  the right to purchase from each Series a currency at the exercise
price until the expiration of the option. Each Series may write a call option on
a foreign  currency only in conjunction  with a purchase of a put option on that
currency.

Each Series' custodian will segregate cash or permitted  securities belonging to
each Series with  respect to its assets  committed to (a) writing  options,  (b)
forward  foreign  currency  contracts and (c) cross hedges  entered into by each
Series. If the value of the securities  segregated declines,  additional cash or
permitted 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 each  Series'
commitments  with  respect to such written  options,  forward  foreign  currency
contracts and cross hedges.

CHANGE OF INVESTMENT  OBJECTIVES  AND POLICIES.  Neither the Alpha Series nor an
Underlying  Fund  will  change  its  investment  objective  without  shareholder
approval.  If the  Alpha  Series  or an  Underlying  Fund  determines  that  its
objective can best be achieved by a change in investment policy or strategy,  it
may make such  change  without  shareholder  approval  by  disclosing  it in its
prospectus.

PORTFOLIO  TURNOVER.  The Alpha Series'  turnover rate is not expected to exceed
20% annually.  A portfolio turnover rate of 100% would occur if all of the Alpha
Series'  investments  were sold within a year. The Fund's Officers will purchase
or sell  securities:  (i) to  accommodate  purchases  and sales of Alpha Series'
shares;  (ii) on those occasions when they deem that market conditions warrant a
change in the percentage of the Alpha Series' assets invested in each Underlying
Fund; and (iii) to maintain or modify the allocation of the Alpha Series' assets
among the  Underlying  Funds in which the Series  invests  within the percentage
limits set by Fund management from time to time.

RISK REDUCTION. In an effort to reduce risk, among other things, each Underlying
Fund is  diversified  with  respect to its  investments  under both the Internal
Revenue Code and the Investment  Company Act of 1940.  Further,  each Underlying
Fund  represents  a different  method of small-cap  investing  as the  following
describes.  Small-Cap  Series uses a value method  (generally  seeks to focus on
seasoned,  small companies whose stocks represent bargains. These companies also
may have characteristics  which are overlooked or not fully recognized,  such as
strong market position,  financial strength,  high employee ownership,  and/or a
culture of flexibility and innovation). International Series uses a method which
seeks to focus its  portfolio  on  leading  companies  that  represent  the best
investment potential on an international  basis. Fuji Investment  Management Co.
(Europe),  Ltd., an affiliate of Fuji Bank, Ltd. (one of the world's largest and
most respected  banks) provides  international  expertise in market analysis and
company research as part of International Series' investment process. Developing
Growth  Fund  uses a  growth  method  which  generally  seeks  to focus on small
companies with above-average,  long-term growth rates with strong management and
a  proven  commitment  to  growth.   Developing  Growth  Fund  looks  for  other
characteristics  that will help a company's  growth,  such as unique products or
services or new markets or patents,  copyrights  and/or special  licensing which
are overlooked by others.  Finally, Alpha Series' assets are allocated according
to maximum and minimum  amounts which can be invested in each Underlying Fund as
determined  from  time to time by Fund  management.  Collectively,  these  three
Underlying Funds are invested in  approximately  200 to 300 or more companies at
any   particular   time   across  the   spectrum  of   investment   methods  and
diversification  requirements  and Alpha  Series' own asset  allocation  process
among these three funds from time to time.

Regardless  of these  efforts to reduce risk,  investors in Alpha Series  should
consider the following market risks.

MARKET RISKS.  Small-Capitalized  Stocks.  As a mutual fund investing its assets
primarily in common stocks of small-capitalized  companies,  the Alpha Series is
subject to stock  market  risk - i.e.,  the  possibility  that  stock  prices in
general will decline over short or even extended periods. The stock market tends
to be cyclical,  with periods when stock prices  generally rise and periods when
stock prices generally decline.

The small  capitalized  companies in which the Underlying Funds primarily invest
may offer significant  appreciation  potential.  However,  smaller companies may
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
capitalized  companies may be more volatile in price, normally have fewer shares
outstanding  and trade less  frequently  than large  companies.  Therefore,  the
securities of smaller companies may be subject to wider price  fluctuations.  In
many instances,  the securities of smaller companies are traded over the counter
and may not be traded in the volume typical of a national securities exchange.

Foreign  Securities.  A  portion  of the  small-capitalized  stock in which  the
Underlying  Funds  invest  trades in foreign  countries  ranging  from up to 10%
(Developing  Growth)  through  up to 35%  (Small-Cap  Series)  to at  least  80%
(International Series).

Securities markets of foreign countries in which the Underlying Funds may invest
generally are not subject to the same degree of  regulation as the U.S.  markets
and may be more  volatile and less liquid than the major U.S.  markets.  Lack of
liquidity  may affect the  Underlying  Funds'  ability to purchase or sell large
blocks  of  securities  and  thus  obtain  the  best  price.  There  may be less
publicly-available   information  on   publicly-traded   companies,   banks  and
governments in foreign countries than generally is the case for such entities in
the United States. The lack of uniform accounting  standards and practices among
countries impairs the validity of direct comparisons of valuation measures (such
as  price/earnings   ratios)  for  securities  in  different  countries.   Other
considerations include political and social instability,  expropriation,  higher
transaction  costs,  withholding  taxes that  cannot be passed  through as a tax
credit  or  deduction  to  shareholders,  currency  fluctuations  and  different
securities  settlement  practices.  Settlement  periods for foreign  securities,
which are sometimes longer than those for securities of U.S. issuers, may affect
portfolio  liquidity.  In addition,  foreign  securities  held by the Underlying
Funds  may be  traded  on days  that the  Underlying  Funds do not  value  their
portfolio  securities,  such as Saturdays and customary  business  holidays and,
accordingly, the Underlying Funds' (and thus the Alpha Series') net asset values
may be  significantly  affected on days when  shareholders do not have access to
the Alpha Series.

4 PURCHASES

ALTERNATIVE SALES ARRANGEMENTS

CLASSES OF SHARES.  The Alpha Series offers investors three different classes of
shares.  The  different  classes  of shares  represent  investments  in the same
portfolio of  securities  but are subject to different  expenses and will likely
have different  share prices.  Investors  should read this section  carefully to
determine which class represents the best investment option for their particular
situation.

CLASS A SHARES.  If you buy Class A shares,  you pay an initial  sales charge on
investments  of less than $1 million (or on investments  for  employer-sponsored
retirement  plans under the Internal  Revenue Code  (hereinafter  referred to as
"Retirement Plans") with less than 100 eligible employees or on investments that
do not qualify to be under a "special  retirement  wrap  program"  defined under
"Class A Share Net Asset Value Purchases" below). If you purchase Class A shares
as part of an investment of at least $1 million (or for Retirement Plans with at
least 100 eligible  employees  or under a special  retirement  wrap  program) in
shares of one or more Lord  Abbett-sponsored  funds, you will not pay an initial
sales  charge,  but if you redeem any of those shares within 24 months after the
month in which you buy them,  you may pay to the  Series a  contingent  deferred
sales charge  ("CDSC") of 1% except for redemptions  under a special  retirement
wrap program.  Class A shares are subject to service and distribution  fees that
are currently estimated to total annually  approximately .25 of 1% of the annual
net asset value of the Class A shares.  The initial sales charge rates, the CDSC
and the Rule 12b-1 plan  applicable  to the Class A shares are  described  under
"General" below.

CLASS B SHARES.  If you buy Class B shares,  you pay no sales charge at the time
of  purchase,  but if you redeem your  shares  before the sixth  anniversary  of
buying them, you will normally pay a CDSC to Lord Abbett  Distributor LLC ("Lord
Abbett  Distributor").  That CDSC varies  depending  on how long you own shares.
Class B shares are subject to service and distribution fees at an annual rate of
1% of the  annual net asset  value of the Class B shares.  The CDSC and the Rule
12b-1 plan applicable to the Class B shares are described under "General" below.

CLASS C SHARES.  If you buy Class C shares,  you pay no sales charge at the time
of  purchase,  but if you redeem your  shares  before the first  anniversary  of
buying them,  you will  normally pay the Series a CDSC of 1%. Class C shares are
subject to service and  distribution  fees at an annual rate of 1% of the annual
net  asset  value of the  Class C  shares.  The CDSC  and the  Rule  12b-1  plan
applicable to the C shares are described under "General" below.

WHICH CLASS OF SHARES  SHOULD YOU CHOOSE?  Once you decide that the Series is an
appropriate  investment  for you,  the  decision  as to which class of shares is
better  suited to your needs  depends  on a number of  factors  which you should
discuss with your investment  professional.  The Series' class-specific expenses
and the effect of the different  types of sales charges on your  investment will
affect your  investment  results over time. The most  important  factors are how
much you plan to invest and how long you plan to hold your  investment.  If your
goals  and  objectives  change  over  time and you plan to  purchase  additional
shares,  you should  re-evaluate  those  factors  to see if you should  consider
another class of shares.

In  the  following   discussion,   to  help  provide  you  and  your  investment
professional  with a  framework  in which to  choose a class,  we have made some
assumptions  using a  hypothetical  investment in the Series.  We used the sales
charge rates that apply to Class A, Class B and Class C shares,  and  considered
the  effect of the  higher  distribution  fees on Class B and  Class C  expenses
(which will affect your investment return). Of course, the actual performance of
your investment  cannot be predicted and will vary,  based on the Series' actual
investment  returns,  the operating  expenses borne by each class of shares, and
the class of shares you purchase.  The factors  briefly  discussed below are not
intended to be investment advice,  guidelines or  recommendations,  because each
investor's financial  considerations are different.  The discussion below of the
factors to consider in purchasing a particular  class of shares assumes that you
will  purchase  only one  class of  shares  and not a  combination  of shares of
different classes.

HOW LONG DO YOU EXPECT TO HOLD YOUR  INVESTMENT?  While future  financial  needs
cannot be  predicted  with  certainty,  knowing how long you expect to hold your
investment  will assist you in selecting the  appropriate  class of shares.  For
example,  over time, the reduced sales charges available for larger purchases of
Class A shares may offset the effect of paying an initial  sales  charge on your
investment,  compared to the effect over time of higher class-specific  expenses
on Class B or Class C shares for which no initial sales charge is paid.  Because
of the effect of  class-based  expenses,  your choice  should also depend on how
much you plan to invest.

Investing for the Short Term. If you have a short-term  investment horizon (that
is,  you plan to hold your  shares  for not more  than six  years),  you  should
probably  consider  purchasing  Class A or Class C shares  rather  than  Class B
shares.  This is because of the effect of the Class B CDSC if you redeem  before
the sixth  anniversary  of your  purchase,  as well as the effect of the Class B
distribution  fee on the  investment  return for that  class in the short  term.
Class C shares might be the  appropriate  choice  (especially for investments of
less than $100,000), because there is no initial sales charge on Class C shares,
and the CDSC does not apply to shares  you  redeem  after  holding  them for one
year.

However,  if you plan to invest more than $100,000 for the short term,  then the
more you invest and the more your investment horizon increases toward six years,
the more  attractive  the Class A share  option may become.  This is because the
annual  distribution  fee on Class C shares  will have a greater  impact on your
account over the longer term than the reduced  front-end sales charge  available
for larger  purchases of Class A shares.  For  example,  Class A shares might be
more  appropriate  than Class C shares  for  investments  of more than  $100,000
expected to be held for 5 or 6 years (or more).  For  investments  over $250,000
expected  to be held 4 to 6 years (or  more),  Class A shares  may  become  more
appropriate than Class C shares. If you are investing  $500,000 or more, Class A
shares may become more desirable as your investment  horizon  approaches 3 years
or more.

For most investors who invest $1 million or more,  for Retirement  Plans with at
least 100 eligible employees or for investments pursuant to a special retirement
wrap program, in most cases Class A shares will be the most advantageous choice,
no matter how long you intend to hold your shares.

Investing  for the Longer Term.  If you are  investing  for the longer term (for
example,  to provide  for future  college  expenses  for your  child) and do not
expect to need access to your money for seven years or more,  Class B shares may
be an appropriate investment option if you plan to invest less than $100,000. If
you plan to invest more than  $100,000  over the long term,  Class A shares will
likely be more  advantageous than Class B shares or Class C shares, as discussed
above,  because of the effect of the expected  lower expenses for Class A shares
and the reduced initial sales charges available for larger  investments in Class
A shares under the Series' rights of accumulation.

Of course,  these examples are based on  approximations of the effect of current
sales charges and expenses on a  hypothetical  investment  over time, and should
not be relied on as rigid guidelines.

You should  discuss your purchase order for a specific class of shares with your
investment professional.

ARE THERE  DIFFERENCES  IN ACCOUNT  FEATURES  THAT MATTER TO YOU?  Some  account
features  are  available  in whole or in part to  Class A,  Class B and  Class C
shareholders.  Other features (such as Systematic Withdrawal Plans) might not be
advisable in non-Retirement  Plan accounts for Class B shareholders  (because of
the effect of the CDSC on the entire  amount of a  withdrawal  if it exceeds 12%
annually) and in any account for Class C  shareholders  during the first year of
share  ownership  (due  to the  CDSC  on  withdrawals  during  that  year).  See
"Systematic  Withdrawal Plan" under "Shareholder  Services" for more information
about the 12%  annual  waiver of the CDSC with  respect  to Class B shares.  You
should  carefully  review  how you plan to use your  investment  account  before
deciding  which class of shares you buy. For example,  the dividends  payable to
Class B and Class C shareholders will be reduced by the expenses borne solely by
each of these classes,  such as the higher distribution fee to which Class B and
Class C shares are subject, as described below.

HOW DOES IT AFFECT PAYMENTS TO MY BROKER?  A salesperson,  such as a broker,  or
any other  person who is entitled  to receive  compensation  for selling  Series
shares may receive different compensation for selling one class than for selling
another class. As discussed in more detail below, such compensation is primarily
paid at the time of sale in the case of  Class A and B shares  and is paid  over
time, so long as shares remain outstanding, in the case of Class C shares. It is
important that investors understand that the primary purpose of the CDSC for the
Class B shares  and the  distribution  fee for Class B and Class C shares is the
same as the purpose of the front-end sales charge on sales of Class A shares: to
compensate  brokers and other persons selling such shares. The CDSC, if payable,
supplements  the Class B  distribution  fee and reduces the Class C distribution
fee expenses for the Series and Class C shareholders.

GENERAL

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 it
to the Alpha Series of the Lord Abbett Securities Trust (P.O. Box 419100, Kansas
City,  Missouri  64141).  The minimum  initial  investment  is $1,000 except for
Invest-A-Matic ($250 initial and $50 subsequent minimum), Div-Move ($50 minimum)
and Individual Retirement Accounts ($250 minimum). For Retirement Plans there is
no minimum  investment  required.  See  "Shareholder  Services." For information
regarding the proper form of a purchase or redemption  order, call the Series at
800-821-5129.  This offering may be suspended, changed or withdrawn. Lord Abbett
Distributor reserves the right to reject any order.

The net asset value of our shares is  calculated  every  business  day as of the
close of the New York Stock  Exchange  ("NYSE")  by  dividing  net assets by the
number of shares  outstanding.  Securities  are valued at their  market value as
more fully described in the Statement of Additional Information.

BUYING  SHARES  THROUGH  YOUR DEALER.  Orders for shares  received by the Series
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 the  applicable  public  offering  price  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 applicable  public  offering price 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.

Lord Abbett Distributor may, for specified periods,  allow dealers to retain the
full sales charge for sales of shares during such periods,  or pay an additional
concession to a dealer who,  during a specified  period,  sells a minimum dollar
amount of our shares and/or shares of other Lord Abbett-sponsored funds. In some
instances,  such additional  concessions will be offered only to certain dealers
expected to sell  significant  amounts of shares.  Lord Abbett  Distributor may,
from time to time, implement promotions under which Lord Abbett Distributor will
pay a fee to dealers with respect to certain purchases not involving  imposition
of  a  sales  charge.   Additional   payments  may  be  paid  from  Lord  Abbett
Distributor's  own  resources  and  will  be made in the  form  of cash  or,  if
permitted,  non-cash  payments.  The non-cash  payments  will  include  business
seminars at resorts or other locations,  including meals and  entertainment,  or
the receipt of  merchandise.  The cash payments will include  payment of various
business  expenses  of the dealer.  In  selecting  dealers to execute  portfolio
transactions  for the Series'  portfolio,  if two or more dealers are considered
capable of obtaining best  execution,  we may prefer the dealer who has sold our
shares and/or shares of other Lord Abbett-sponsored funds.

BUYING  CLASS A  SHARES.  The  offering  price of Class A shares is based on the
per-share  net asset value next  computed  after your order is  accepted  plus a
sales charge as follows.

                         Sales Charge as a        Dealer's
                         Percentage of:           Concession
                                                  as a           To Compute
                                        Net       Percentage     Offering
                         Offering       Amount    of Offering    Price, Divide
Size of Investment       Price          Invested  Price          NAV by

Less than $50,000        5.75%          6.10%     5.00%          .9425
$50,000 to $99,999       4.75%          4.99%     4.00%          .9525
$100,000 to $249,999     3.75%          3.90%     3.25%          .9625
$250,000 to $499,999     2.75%          2.83%     2.25%          .9725
$500,000 to $999,999     2.00%          2.04%     1.75%          .9800
$1,000,000 or more              No Sales Charge   1.00%+        1.0000

+Authorized  institutions  receive concessions on purchases made by a Retirement
Plan,  pursuant to a special  retirement  wrap  program or by another  qualified
purchaser  within a 12-month  period  (beginning  with the first net asset value
purchase) as follows:  1.00% on  purchases  of $5 million,  0.55% of the next $5
million,  0.50% of the next $40 million and 0.25% on purchases over $50 million.
See "Class A Rule 12b-1 Plan" below.


CLASS A SHARE VOLUME  DISCOUNTS.  This section describes several ways to qualify
for a lower  sales  charge  when  purchasing  Class A shares if you inform  Lord
Abbett  Distributor or the Series that you are eligible at the time of purchase.
(1) Any purchaser (as described below) may aggregate a Class A share purchase in
the Series with any share purchases of any other eligible Lord  Abbett-sponsored
fund, together with the current value at maximum offering price of any shares in
the  Series  and  in  any  eligible  Lord  Abbett-sponsored  funds  held  by the
purchaser.  (Holdings  in the  following  funds are not  eligible  for the above
rights of  accumulation:  Lord Abbett Equity Fund  ("LAEF"),  Lord Abbett Series
Fund  ("LASF"),  any  series of Lord  Abbett  Research  Fund not  offered to the
general public ("LARF") and Lord Abbett U.S. Government  Securities Money Market
Fund  ("GSMMF"),  except for  holdings  in GSMMF which are  attributable  to any
shares exchanged from a Lord Abbett-sponsored  fund.) (2) A purchaser may sign a
non-binding  13-month  statement of  intention to invest  $50,000 or more in any
shares of the  Series or in any of the above  eligible  funds.  If the  intended
purchases  are  completed  during the period,  the total amount of your intended
purchases  of any shares will  determine  the reduced  sales charge rate for the
Class A shares purchased during the period. If not completed, each Class A share
purchase  will be at the sales  charge for the  aggregate  of the  actual  share
purchases. Shares issued upon reinvestment of dividends or distributions are not
included in the statement of  intention.  The term  "purchaser"  includes (i) an
individual,  (ii) an individual and his or her spouse and children under the age
of 21 and (iii) a trustee  or other  fiduciary  purchasing  shares  for a single
trust estate or single fiduciary account  (including a pension,  profit-sharing,
or other  employee  benefit  trust  qualified  under Section 401 of the Internal
Revenue  Code -- more  than one  qualified  employee  benefit  trust of a single
employer,  including its consolidated  subsidiaries,  may be considered a single
trust, as may qualified plans of multiple employers  registered in the name of a
single bank  trustee as one  account),  although  more than one  beneficiary  is
involved.

CLASS A SHARE NET ASSET VALUE PURCHASES.  Our Class A shares may be purchased at
net asset value by our  trustees,  employees  of Lord  Abbett,  employees of our
shareholder  servicing  agent and  employees of any  securities  dealer having a
sales  agreement with Lord Abbett  Distributor who consents to such purchases or
by the trustee or custodian under any pension or profit-sharing  plan or Payroll
Deduction IRA  established for the benefit of such persons or for the benefit of
any national  securities trade  organization to which Lord Abbett or Lord Abbett
Distributor  belongs or any company with an  account(s) in excess of $10 million
managed by Lord Abbett on a private-advisory account basis. For purposes of this
paragraph,   the  terms  "trustees"  and  "employees"  include  a  trustee's  or
employee's  spouse  (including  the  surviving  spouse of a deceased  trustee or
employee).  The terms  "trustees"  and  "employees  of Lord Abbett" also include
other family members and retired trustees and employees. Our Class A shares also
may be  purchased  at net  asset  value  (a) at $1  million  or  more,  (b) with
dividends  and  distributions  on Class A shares of other Lord  Abbett-sponsored
funds,  except for dividends and distributions on shares of LARF, LAEF and LASF,
(c) under the loan feature of the Lord  Abbett-sponsored  prototype  403(b) plan
for  Class A  share  purchases  representing  the  repayment  of  principal  and
interest,  (d) by certain authorized  brokers,  dealers,  registered  investment
advisers or other financial institutions who have entered into an agreement with
Lord Abbett  Distributor in accordance with certain  standards  approved by Lord
Abbett Distributor,  providing specifically for the use of our Class A shares in
particular  investment  products  made  available  for a fee to  clients of such
brokers,   dealers,   registered   investment   advisers  and  other   financial
institutions ("mutual fund wrap-fee programs"),  (e) by employees,  partners and
owners of  unaffiliated  consultants  and advisers to Lord  Abbett,  Lord Abbett
Distributor or Lord Abbett-sponsored  funds who consent to such purchase if such
persons provide services to Lord Abbett,  Lord Abbett  Distributor or such funds
on a continuing  basis and are familiar with such fund,  (f) through  Retirement
Plans  with at  least  100  eligible  employees,  and  (g)  through  a  "special
retirement wrap program"  sponsored by an authorized  institution  having one or
more   characteristics   distinguishing  it,  in  the  opinion  of  Lord  Abbett
Distributor from a mutual fund wrap-fee program.  Such characteristics  include,
among other things, the fact that an authorized  institution does not charge its
clients  any  fee of a  consulting  or  advisory  nature  that  is  economically
equivalent to the  distribution fee under a Class A 12b-1 plan and the fact that
the program relates to participant-directed Retirement Plans.

There are no  minimum  initial or  subsequent  investment  requirements  for the
above-mentioned mutual fund wrap-fee programs.

CLASS A RULE 12B-1 PLAN. We have adopted a Class A share Rule 12b-1 plan (the "A
Plan") which authorizes the payment of fees to authorized  institutions  (except
as to certain  accounts for which  tracking  data is not  available) in order to
provide additional incentives for them (a) to provide continuing information and
investment  services to their Class A  shareholder  accounts  and  otherwise  to
encourage  those accounts to remain invested in the Series and (b) to sell Class
A shares of the  Series.  Under the A Plan,  in order to save on the  expense of
shareholders'  meetings and to provide flexibility to the Board of Trustees, the
Board,  including  a majority of the outside  trustees  who are not  "interested
persons"  of the Fund as  defined  in the  Investment  Company  Act of 1940,  is
authorized to approve  annual fee payments from our Class A assets of up to 0.50
of 1% of the average net of such assets  consisting of distribution  and service
fees,  each at a  maximum  annual  rate  not  exceeding  0.25  of 1%  (the  "Fee
Ceiling").

Under the A Plan,  the Board has approved  payments by the Series to Lord Abbett
Distributor  which uses or passes on to  authorized  institutions  (1) an annual
service fee (payable  quarterly) of .25% of the average daily net asset value of
the  Class A shares  serviced  by  authorized  institutions  and (2) a  one-time
distribution fee of up to 1% (reduced according to the following schedule: 1% of
the first $5 million,  .55% of the next $5 million, .50% of the next $40 million
and .25% over $50  million),  payable  at the time of sale on all Class A shares
sold during any  12-month  period  starting  from the day of the first net asset
value sale (i) at the $1 million  level by  authorized  institutions,  including
sales qualifying at such level under the rights of accumulation and statement of
intention  privileges;  (ii) through Retirement Plans with at least 100 eligible
employees or (iii) constituting new sales pursuant to a "special retirement wrap
program"  and  excluding  exchanges  into the Series  under  such a program.  In
addition, the Board has approved for those authorized institutions which qualify
a supplemental  annual  distribution fee equal to 0.10% of the average daily net
asset value of the Class A shares serviced by authorized institutions which have
a program for the promotion and retention of such shares  satisfying Lord Abbett
Distributor.  Class A shares held pursuant to a satisfactory  program would, for
example, (i) constitute a significant  percentage of the Fund's net assets, (ii)
be held for a substantial  length of time and/or (iii) have a lower than average
redemption rate.  Institutions and persons permitted by law to receive such fees
are "authorized institutions."

Under the A Plan, Lord Abbett  Distributor is permitted to use payments received
to provide continuing  services to Class A shareholder  accounts not serviced by
authorized  institutions and, with Board approval, to finance any activity which
is primarily intended to result in the sale of Class A shares. Any such payments
are subject to the Fee Ceiling.  Any  payments  under that Plan not used by Lord
Abbett Distributor in this manner are passed on to authorized institutions.

Holders of Class A shares on which the 1% sales  distribution  fee has been paid
may be  required  to pay to the Series on behalf of its Class A shares a CDSC of
1% of the original  cost or the then net asset value,  whichever is less, of all
Class A shares so purchased which are redeemed out of the Lord  Abbett-sponsored
family of funds on or before the end of the twenty-fourth  month after the month
in which the purchase  occurred.  (Exceptions  are made for: (i)  redemptions by
Retirement  Plans  due to any  benefit  payment  such  as Plan  loans,  hardship
withdrawals,  death,  retirement or separation from service with respect to plan
participants  or  the  distribution  of  any  excess   contributions   and  (ii)
participant-directed  redemptions  which  continue  as  program  investments  in
another fund participating in a "special retirement wrap program.") If the Class
A shares have been  exchanged  into another Lord  Abbett-sponsored  fund and are
thereafter  redeemed out of the Lord Abbett family of funds on or before the end
of such twenty-fourth  month, the charge will be collected for the Series' Class
A shares by the other fund. The Series will collect such a charge for other Lord
Abbett-sponsored funds in a similar situation.

BUYING  CLASS B SHARES.  Class B shares  are sold at net  asset  value per share
without an initial  sales  charge.  However,  if Class B shares are redeemed for
cash before the sixth anniversary of their purchase, a CDSC may be deducted from
the redemption proceeds. That sales charge will not apply to shares purchased by
the reinvestment of dividends or capital gains distributions. The charge will be
assessed  on the  lesser  of the net  asset  value of the  shares at the time of
redemption  or the  original  purchase  price.  The Class B CDSC is paid to Lord
Abbett Distributor to compensate it for its services rendered in connection with
the distribution of Class B shares, including the payment and financing of sales
commissions. See "Class B Rule 12b-1 Plan" below.

To determine whether the CDSC applies to a redemption, the Series redeems shares
in the following  order:  (1) shares  acquired by  reinvestment of dividends and
capital  gains  distributions,  (2) shares held until the sixth  anniversary  of
their  purchase  or later,  and (3)  shares  held the  longest  before the sixth
anniversary of their purchase.

The amount of the CDSC will depend on the number of years since you invested and
the dollar amount being redeemed, according to the following schedule.

Anniversary
of the Day on            Contingent Deferred
Which the Purchase       Sales Charge on
Order Was Accepted       Redemptions
                         (As % of Amount
On        Before         Subject to Charge)
          1st            5.0%
1st       2nd            4.0%
2nd       3rd            3.0%
3rd       4th            3.0%
4th       5th            2.0%
5th       6th            1.0%
on or after the          None
6th anniversary


In the table,  an  "anniversary"  is the 365th day subsequent to a purchase or a
prior  anniversary.  All  purchases  are  considered  to have  been  made on the
business  day the  purchase was made.  See "Buying  Shares  Through Your Dealer"
above.

If  Class  B  shares  are  exchanged   into  the  same  class  of  another  Lord
Abbett-sponsored  fund and the new shares  are  subsequently  redeemed  for cash
before the sixth anniversary of the original purchase,  the CDSC will be payable
on the new shares on the basis of the time elapsed  from the original  purchase.
The Series will collect such a charge for other Lord Abbett-sponsored funds in a
similar situation.

WAIVER OF CLASS B SALES CHARGES.  The Class B CDSC will not be applied to shares
purchased in certain types of transactions  nor will it apply to shares redeemed
in certain circumstances as described below.

The Class B CDSC will be waived for redemptions of shares (i) in connection with
the  Systematic  Withdrawal  Plan and  Div-Move  services,  as described in more
detail under  "Shareholder  Services" below, (ii) by Retirement Plans due to any
benefit payment such as Plan loans, hardship withdrawals,  death,  retirement or
separation from service with respect to plan participants or the distribution of
any excess  contributions,  (iii) in connection  with the death of an individual
shareholder   (natural   person),   and  (iv)  in  connection   with   mandatory
distributions under 403(b) plans and individual  retirement accounts. If Class B
shares represent a part of an individual's total IRA or 403(b)  investment,  the
CDSC waiver is available only for that portion of a mandatory distribution which
bears the same  relation  to the entire  mandatory  distribution  as the B share
investment bears to the total investment.

CLASS B RULE 12B-1 PLAN.  The Series has adopted a Class B share Rule 12b-1 Plan
(the "B Plan") under which the Series  periodically pays Lord Abbett Distributor
(i) an annual  service fee of 0.25 of 1% of the average daily net asset value of
the  Class B shares  and (ii) an  annual  distribution  fee of 0.75 of 1% of the
average  daily net asset  value of the Class B shares that are  outstanding  for
less than eight years.

Lord  Abbett   Distributor  uses  the  service  fee  to  compensate   authorized
institutions  (except  as to certain  accounts  for which  tracking  data is not
available)  for  providing  personal  services  for  accounts  that hold Class B
shares. Those services are similar to those provided under the A Plan, described
above.
<PAGE>

Lord Abbett  Distributor  pays an up-front  payment to  authorized  institutions
totaling 4%, consisting of 0.25% for service and 3.75% for a sales commission as
described below.

Lord Abbett Distributor pays the 0.25% service fee to authorized institutions in
advance for the first year after Class B shares have been sold by the authorized
institutions.  After  the  shares  have  been  held  for  a  year,  Lord  Abbett
Distributor pays the service fee on a quarterly basis.  Lord Abbett  Distributor
is entitled to retain such service fee payable  under the B Plan with respect to
accounts  for which there is no  authorized  institution  of record or for which
such authorized  institution  did not qualify.  Although not obligated to do so,
Lord Abbett  Distributor may waive receipt from the Series of part or all of the
service fee payments.

The  0.75%  annual  distribution  fee is  paid  to Lord  Abbett  Distributor  to
compensate it for its services  rendered in connection with the  distribution of
Class B shares,  including  the  payment  and  financing  of sales  commissions.
Although Class B shares are sold without a front-end  sales charge,  Lord Abbett
Distributor pays authorized institutions responsible for sales of Class B shares
a sales  commission of 3.75% of the purchase price.  This payment is made at the
time of sale from Lord Abbett

Distributor's own resources.  Lord Abbett has made arrangements to finance these
commission payments, which arrangements include non-recourse assignments by Lord
Abbett Distributor to the financing party of such distribution and CDSC payments
concerning Class B shares.

The  distribution  fee and CDSC payments  described above allow investors to buy
Class B shares  without a front-end  sales  charge  while  allowing  Lord Abbett
Distributor to compensate authorized  institutions that sell Class B shares. The
CDSC is intended to supplement Lord Abbett  Distributor's  reimbursement for the
commission  payments it has made with  respect to Class B shares and its related
distribution  and financing  costs. The distribution fee payments are at a fixed
rate and the CDSC payments are of a nature that,  during any year, both forms of
payment may not be  sufficient  to  reimburse  Lord Abbett  Distributor  for its
actual  expenses.  The Series is not liable for any  expenses  incurred  by Lord
Abbett Distributor in excess of (i) the amount of such distribution fee payments
to be received by Lord Abbett  Distributor  and (ii)  unreimbursed  distribution
expenses of Lord Abbett  Distributor  incurred in a prior plan year,  subject to
the right of the Board of Trustees or shareholders to terminate the B Plan. Over
the long term, the expenses incurred by Lord Abbett Distributor are likely to be
greater than such distribution fee and CDSC payments. Nevertheless, there exists
a possibility that for a short-term period Lord Abbett  Distributor may not have
sufficient expenses to warrant reimbursement by receipt of such distribution fee
payments.  Although  Lord  Abbett  Distributor  does not intend to make a profit
under  the B  Plan,  the  B  Plan  is  considered  a  compensation  plan  (i.e.,
distribution  fees are paid  regardless of expenses  incurred) in order to avoid
the   possibility  of  Lord  Abbett   Distributor  not  being  able  to  receive
distribution fees because of a temporary timing difference between its incurring
expenses and receipt of such distribution fees.

AUTOMATIC  CONVERSION  OF CLASS B  SHARES.  On the  eighth  anniversary  of your
purchase of Class B shares,  those shares will automatically  convert to Class A
shares.  This  conversion  relieves  Class B  shareholders  of the higher annual
distribution fee that applies to Class B shares under the B Plan. The conversion
is based on the  relative  net  asset  values of the two  classes,  and no sales
charge or other charge is imposed.  When Class B shares convert, any other Class
B shares that were acquired by the  reinvestment of dividends and  distributions
will also convert to Class A shares on a pro rata basis. The conversion  feature
is  subject  to the  continued  availability  of an  opinion of counsel or a tax
ruling  described in "Purchases,  Redemptions and  Shareholder  Services" in the
Statement of Additional Information.

BUYING  CLASS C SHARES.  Class C shares  are sold at net  asset  value per share
without an initial  sales  charge.  However,  if Class C shares are redeemed for
cash  before  the  first  anniversary  of their  purchase,  a CDSC of 1% will be
deducted from the redemption proceeds.  That reimbursement charge will not apply
to  shares   purchased  by  the  reinvestment  of  dividends  or  capital  gains
distributions.  The charge will be assessed on the lesser of the net asset value
of the shares at the time of  redemption  or the original  purchase  price.  The
Class C CDSC is paid to the Series to reimburse it, in whole or in part, for the
service and distribution fee payments made by the Series at the time such shares
were sold, as described below.

To determine whether the CDSC applies to a redemption, the Series redeems shares
in the following  order:  (1) shares  acquired by  reinvestment of dividends and

<PAGE>

capital gains distributions, (2) shares held for one year or more and (3) shares
held the longest  before the first  anniversary  of their  purchase.  If Class C
shares are exchanged into the same class of another Lord  Abbett-sponsored  fund
and  subsequently  redeemed  before  the  first  anniversary  of their  original
purchase,  the  charge  will be  collected  by the other  fund on behalf of this
Series'  Class C shares.  The Series will  collect  such a charge for other Lord
Abbett-sponsored funds in a similar situation.

CLASS C RULE 12B-1 PLAN.  The Series has adopted a Class C share Rule 12b-1 Plan
(the "C Plan") under which  (except as to certain  accounts  for which  tracking
data is not  available)  the Series pays  authorized  institutions  through Lord
Abbett  Distributor (1) a service fee and a distribution fee, at the time shares
are sold,  not to  exceed  0.25 and 0.75 of 1%,  respectively,  of the net asset
value of such shares and (2) at each quarter-end  after the first anniversary of
the sale of shares,  fees for services and  distribution  at annual rates not to
exceed 0.25 and 0.75 of 1%, respectively,  of the average annual net asset value
of such shares  outstanding  (payments  with  respect to shares not  outstanding
during the full quarter to be prorated). These service and distribution fees are
for purposes  similar to those mentioned above with respect to the A Plan. Sales
in clause (1) exclude shares issued for reinvested  dividends and  distributions
and  shares  outstanding  in clause (2)  include  shares  issued for  reinvested
dividends and distributions after the first anniversary of their issuance.

5 SHAREHOLDER SERVICES

We offer the following shareholder services:
Telephone  Exchange  Privilege:  Shares of any class may be exchanged  without a
service   charge:   (a)  for  shares  of  the  same  class  of  any  other  Lord
Abbett-sponsored  fund  except  for (i)  LAEF,  LASF and  LARF and (ii)  certain
tax-free,  single-state series where the exchanging shareholder is a resident of
a state in which such  series is not  offered for sale and (b) for shares of any
authorized  institution's  affiliated  money market fund  satisfying Lord Abbett
Distributor  as  to  certain  omnibus  account  and  other  criteria  (together,
"Eligible Funds").

You or your representative with proper identification can instruct the Series to
exchange  uncertificated  shares  of a class  (held by the  transfer  agent)  by
telephone.  Shareholders  have this privilege  unless they refuse it in writing.
The  Series  will not be  liable  for  following  instructions  communicated  by
telephone that it reasonably  believes to be genuine and will employ  reasonable
procedures  to  confirm  that  instructions  received  are  genuine,   including
requesting  proper   identification  and  recording  all  telephone   exchanges.
Instructions must be received by the Series in Kansas City (800-821-5129)  prior
to the close of the NYSE to obtain  each  fund's net asset value per class share
on that day.  Expedited  exchanges by telephone may be difficult to implement in
times of drastic economic or market change. The exchange privilege should not be
used to take advantage of short-term  swings in the market.  The Series reserves
the right to  terminate  or limit the  privilege  of any  shareholder  who makes
frequent  exchanges.  The Series can revoke the privilege  for all  shareholders
upon  60  days'  prior  written   notice.   A  prospectus  for  the  other  Lord
Abbett-sponsored  fund  selected  by you should be  obtained  and read before an
exchange.  Exercise  of the  exchange  privilege  will be  treated as a sale for
federal income tax purposes and, depending on the circumstances,  a capital gain
or loss may be recognized.

Systematic Withdrawal Plan ("SWP"):  Except for Retirement Plans for which there
is no such minimum,  if the maximum offering price value of your  uncertificated
shares is at least $10,000, you may have periodic cash withdrawals automatically
paid to you in either fixed or variable amounts. With respect to Class B shares,
the CDSC will be waived on  redemptions of up to 12% per year of the current net
asset  value of your  account at the time your SWP is  established.  For Class B
shares (over 12% per year) and C shares,  redemption  proceeds due to a SWP will
be derived from the following  sources in the order listed:  (1) shares acquired
by reinvestment of dividends and capital gains, (2) shares held for six years or
more  (Class B) or one year or more  (Class C); and (3) shares  held the longest
before the sixth  anniversary  of their  purchase  (Class B) or before the first
anniversary of their purchase (Class C). For Class B share  redemptions over 12%
per year, the CDSC will apply to the entire redemption.
Therefore,  please  contact the Series for  assistance in minimizing the CDSC in
this situation. Shareholders should be careful in establishing a SWP, especially
to the extent  that such a  withdrawal  exceeds  the annual  total  return for a
class, in which case, the shareholder's  original principal will be invaded and,
over time, may be depleted.
<PAGE>

Div-Move:  You can  invest  the  dividends  paid on your  account  ($50  minimum
investment) into an existing account within the same class in any Eligible Fund.
The  account  must be either  your  account,  a joint  account  for you and your
spouse,  a single account for your spouse or a custodial  account for your minor
child under the age of 21. Such  dividends are not subject to a CDSC. You should
read the prospectus of any other fund before investing.

Invest-A-Matic:  You can make fixed,  periodic investments ($250 minimum initial
and $50 subsequent minimum  investment) into the Series and/or any Eligible Fund
by means of automatic  money  transfers  from your bank  checking  account.  You
should read the prospectus of the other fund before investing.

Retirement  Plans:  Lord Abbett makes  available the retirement  plan documents,
including 401(k) plans and custodial agreements for IRAs (Individual  Retirement
Accounts including Simple IRAs and Simplified Employee  Pensions),  403(b) plans
and pension and profit-sharing plans.

Householding:  Generally,  shareholders with the same last name and address will
receive a single  copy of an annual or  semi-annual  report,  unless  additional
reports are specifically requested in writing to the Fund.

All  correspondence  should  be  directed  to the Alpha  Series  of Lord  Abbett
Securities Trust (P.O. Box 419100, Kansas City, Missouri 64141; 800-821-5129).

6 OUR MANAGEMENT

We employ Lord Abbett as investment  manager for the Alpha Series  pursuant to a
Management  Agreement.  Lord Abbett has been an  investment  manager for over 67
years and  currently  manages  approximately  $25  billion in a family of mutual
funds and other advisory accounts.  Under the Management Agreement,  Lord Abbett
is obligated to provide the Series with investment  management services (such as
the selection of the Underlying Funds in which the Alpha Series will invest,  as
well as maximum  and minimum  amount of the Alpha  Series'  assets  which can be
invested in each  Underlying  Fund) and executive and other  personnel,  pay the
remuneration  of our officers and of our trustees  affiliated  with Lord Abbett,
provide us with  office  space and pay for  ordinary  and  necessary  office and
clerical expenses relating to research,  statistical work and supervision of the
Series'  portfolio  and certain  other costs.  Lord Abbett  provides  investment
management services to twelve other Lord  Abbett-sponsored  funds having various
investment objectives and also advises other investment clients.

The  Series'  investment  decisions  are made by Robert G.  Morris,  Lord Abbett
Partner and Executive  Vice  President of the Fund and Portfolio  Manager of the
Series.  Mr.  Morris  has  served as  Portfolio  Manager  since the start of the
Series.

Under the  Management  Agreement,  the Series is  obligated to pay Lord Abbett a
monthly fee, based on average daily net assets,  at the annual rate of .50 of 1%
for allocating the Alpha Series'  assets among the  Underlying  Funds.  However,
because Lord Abbett expects to waive this fee for the current fiscal year of the
Series,  the  effective fee payable to Lord Abbett by the Series as a percentage
of  average  daily  net  assets is  expected  to be at the  annual  rate of zero
percent.  In addition,  we pay all expenses not expressly assumed by Lord Abbett
or the Underlying Funds. The Series' ratio of expenses, including management fee
expenses,  to average net assets for the one-year  period after  commencement of
operations of the Series is expected to be .25% for Class A shares and 1.00% for
Class B and Class C shares.

The  Officers  and  Trustees of the Fund also serve in similar  positions in the
Underlying  Funds. If the interests of the Alpha Series and the Underlying Funds
were ever to become  divergent,  a concern  might arise that this could create a
potential  conflict of interest  which could affect how the Officers or Trustees
fulfill their fiduciary duties to the Alpha Series and the Underlying Funds. The
Trustees  believe  that the Fund  policy  described  as  follows  will avoid the
concerns which could arise.  Conceivably,  a situation  could occur where proper
portfolio or other action for the Alpha Series could be adverse to the interests
of an Underlying Fund, or the reverse could occur. If such a possibility appears
likely,  the Trustees and Officers will carefully analyze the situation and take
all steps they believe reasonable to minimize and, where possible, eliminate the
potential  conflict.  Moreover,  limitations  on  aggregate  investments  in the
Underlying Funds and other restrictions will be adopted by the Fund's management
to minimize this possibility  from time to time, and continuous  monitoring will
be exercised to avoid, insofar as possible, these concerns.
<PAGE>

7 DIVIDENDS, CAPITAL GAINS DISTRIBUTIONS AND TAXES

With respect to the Series,  dividends from taxable net investment income may be
taken in cash or invested  in  additional  shares at net asset value  (without a
sales charge) and will be paid to shareholders annually in December.

A capital gains  distribution is made when the Series has net profits during the
year from sales of  securities.  Any capital  gains  distributions  will be made
annually  in  December.  They may be taken in cash or invested in more shares at
net asset value without a sales charge.

For tax-deferred  retirement accounts (such as Individual Retirement Accounts or
other  retirement  plans sponsored by Lord Abbett),  dividends and capital gains
distribution  from the Series  most  likely  will be  reinvested  in  additional
shares.

Dividends  and  distributions  declared in October,  November or December of any
year will be treated for federal  income tax purposes as having been received by
shareholders  of the Series in that year if they are paid  before  February 1 of
the following year. A supplemental  capital gains  distribution also may be paid
in December.

The Series  intends to meet the  requirements  of  Subchapter  M of the Internal
Revenue Code. The Series will try to distribute to  shareholders  all of its net
investment  income and net realized  capital gains, so as to avoid the necessity
of paying federal income tax.

If you  open an IRA or  other  tax-deferred  retirement  account,  dividend  and
capital gains  distributions from the Alpha Series will generally be exempt from
current  taxation.  You are advised to consult  with a tax  professional  on the
specific rules  governing your own tax deferred  arrangement.  There are varying
restrictions   imposed  by  the  Internal   Revenue   Service  on   eligibility,
contributions and withdrawals, depending on the type of tax-deferred account you
selected.  The rules governing  tax-deferred  retirement plans are complex,  and
failure to comply with the IRS's rules and  regulations  governing your specific
type of plan may result in substantial  costs to you,  including the loss of tax
advantages and the imposition of additional taxes and penalties by the IRS.

If you open an account in the Alpha  Series  outside a  tax-deferred  retirement
account,  the  following  tax  rules  will  generally  apply.  For  the  regular
investment accounts,  dividends paid by the Alpha Series from the net investment
income and net short capital  gains,  whether  received in cash or reinvested in
additional shares, will be taxable to shareholders at ordinary income rates.

Any capital gains distribution may be taken in cash or reinvested. Distributions
of any net long-term capital gains will be taxable to a shareholder as long-term
capital gains, regardless of how long the shareholder has held the shares. Under
recently enacted  legislation,  the maximum tax rate on long-term  capital gains
for a U.S.  individual,  estate  or trust is  reduced  to 20% for  distributions
derived  from the sale of assets  held by the Fund for more than 18 months.  (If
the  taxpayer  is in the 15% tax  bracket,  the rate is 10%.) For  distributions
derived  from the sale of assets  held by the Fund for between 12 and 18 months,
the tax rate remains at 28% (15% if the taxpayer is in the 15% tax bracket).

If you elect to  receive  dividends  or capital  gains in cash,  a check will be
mailed to you as soon as possible  after the  reinvestment  date. If you arrange
for direct deposit, your payment will be electronically transmitted to your bank
account within one day after the payable date.

Shareholders may be subject to a $50 penalty under the Internal Revenue Code and
we may be required to withhold and remit to the U.S. Treasury a portion (31%) of
any redemption or repurchase proceeds and of any dividend or distribution on any
account,  where the payee  (shareholder)  failed to  provide a correct  taxpayer
identification number or to make certain required certifications.

Limitations  imposed  by the  Internal  Revenue  Code  on  regulated  investment
companies may restrict the Series' ability to engage in transactions in options,
forward contracts and cross hedges.

We will  inform  shareholders  of the federal  tax status of each  dividend  and
distribution  after the end of each calendar year.  Shareholders  should consult
their tax advisers concerning applicable state and local taxes as well as on the
tax  consequences  of gains or losses  from the  redemption  or  exchange of our
shares.

8 REDEMPTIONS

To obtain the proceeds of an  expedited  redemption  of $50,000 or less,  you or
your  representative  with proper  identification  can telephone the Series. The
Series will not be liable for following  instructions  communicated by telephone

<PAGE>

that it reasonably believes to be genuine and will employ reasonable  procedures
to confirm that instructions  received are genuine,  including requesting proper
identification,  recording  all telephone  redemptions  and mailing the proceeds
only  to  the  named  shareholder  at  the  address  appearing  on  the  account
registration.

If you do not qualify for the expedited  procedures  described  above, to redeem
shares  directly,  send  your  request  to the Alpha  Series of the Lord  Abbett
Securities   Trust  (P.O.  Box  419100,   Kansas  City,   Missouri  64141)  with
signature(s)  and any legal capacity of the signer(s)  guaranteed by an eligible
guarantor,  accompanied by any  certificates for shares to be redeemed and other
required  documentation.  We will make  payment  of the net  asset  value of the
shares on the date the  redemption  order was received in proper  form.  Payment
will be made  within  three  days.  The Series may  suspend  the right to redeem
shares for not more than seven days or longer  under  unusual  circumstances  as
permitted  by Federal  law.  If you have  purchased  Series  shares by check and
subsequently submit a redemption request,  redemption proceeds will be paid upon
clearance of your purchase check,  which may take up to 15 days. To avoid delays
you may arrange for the bank upon which a check was drawn to  communicate to the
Series that the check has cleared.  Shares also may be redeemed by the Series at
net asset value through your securities  dealer who, as an unaffiliated  dealer,
may charge you a fee. If your dealer  receives  your order prior to the close of
the NYSE and communicates it to Lord Abbett, as our agent, prior to the close of
Lord  Abbett's  business day, you will receive the net asset value of the shares
being  redeemed  as of the close of the NYSE on that day. If the dealer does not
communicate  such an order to Lord Abbett until the next  business day, you will
receive  the net asset  value as of the close of the NYSE on that next  business
day.

Shareholders  who have redeemed  their shares have a one-time  right to reinvest
into another  account having the identical  registration  in any of the Eligible
Funds at the then applicable net asset value of the shares being purchased,  (i)
without the payment of a sales charge or (ii) with reimbursement for the payment
of any CDSC. Such reinvestment must be made within 60 days of the redemption and
is limited to no more than the dollar amount of the redemption proceeds.

Under certain  circumstances  and subject to prior written notice,  our Board of
Trustees may  authorize  redemption of all of the shares in any account in which
there are fewer than 25 shares.

Tax-qualified   Plans:  For  redemptions  of  $50,000  or  less,  follow  normal
redemption  procedures.  Redemptions  over  $50,000  must be in writing from the
employer,  broker or plan  administrator  stating the reason for the redemption.
The reason  for the  redemption  must be  received  by the  Series  prior to, or
concurrent with, the redemption request.

9 PERFORMANCE

Total  Return.  Total  return  data  may,  from  time to time,  be  included  in
advertisements about the Series.

"Total return" for the one-, five- and ten-year  periods  represents the average
annual compounded rate of return on an investment of $1,000 in the Series at the
maximum public offering  price.  When total return is quoted for Class A shares,
it includes the payment of the maximum  initial sales charge.  When total return
is  shown  for  Class B and  Class C  shares,  it  reflects  the  effect  of the
applicable  CDSC.  Total return also may be presented for other periods or based
on investments at reduced sales charge levels or net asset value.  Any quotation
of total return not reflecting the maximum sales charge  (front-end,  level,  or
back-end)  would be reduced if such sales charge were used.  Quotations of total
return for any period  when an expense  limitation  is in effect will be greater
than if the limitation  had not been in effect.  See "Past  Performance"  in the
Statement of Additional Information for a more detailed description.

This  Prospectus  does not constitute in offering in any  jurisdiction  in which
such offer is not  authorized  or in which the person  making  such offer is not
qualified to do so or to anyone to whom it is unlawful to make such offer.

No person is authorized to give any  information or to make any  representations
not contained in this Prospectus,  or in supplemental sales material  authorized
by the  Fund  and no  person  is  entitled  to  rely  upon  any  information  or
representation not contained herein or therein.
<PAGE>

Investment Manager and Underwriter
Lord, Abbett & Co. and Lord Abbett Distributor LLC
The General Motors Building
767 Fifth Avenue
New York, New York 10153-0203
212-848-1800

Custodian
The Bank of New York
48 Wall Street
New York, New York 10286

Transfer Agent and Dividend
Disbursing Agent
United Missouri Bank of Kansas City, N.A.
Tenth and Grand
Kansas City, Missouri 64141

Shareholder Servicing Agent
DST Systems, Inc.
P.O. Box 419100
Kansas City, Missouri 64141
800-821-5129

Auditors
Deloitte & Touche LLP

Counsel
Debevoise & Plimpton

Printed in the U.S.A.

LAALPH-1-398
(3/98)

LORD ABBETT SECURITIES TRUST
The General Motors Building
767 Fifth Avenue
New York, New York  10153-0203

LORD ABBETT
PROSPECTUS '98

MARCH 1, 1998       APPLICATION INSIDE

LORD ABBETT SECURITIES TRUST

ALPHA SERIES




LORD, ABBETT & CO.
INVESTMENT MANAGEMENT
A TRADITION OF PERFORMANCE THROUGH DISCIPLINED INVESTING
<PAGE>


LORD ABBETT

Statement of Additional Information                      March 1 , 1998

                                           Lord Abbett Securities Trust

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



This Statement of Additional  Information is not a Prospectus.  A Prospectus 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 relates to, and should be read in
conjunction with, the Prospectus dated March 8, 1998.

Lord Abbett  Securities  Trust  (referred  to as the "Fund") was  organized as a
Delaware  business trust on August 16, 1993. The Fund has five series,  but only
Alpha  Series (the  "Series")  is  described  in this  Statement  of  Additional
Information.  The Series has three classes of shares (A, B and C). The Series is
designed to invest in a diversified portfolio of underlying mutual funds, all of
which are  members of the Lord  Abbett  Family of Funds.  Currently,  the Series
invests in three of these underlying mutual funds: Lord Abbett Developing Growth
Fund, Inc.; Lord Abbett Research Fund,  Inc.(Small-Cap  Series), and Lord Abbett
Securities  Trust  (International  Series)  (referred  to as  the  "Lord  Abbett
Funds"). All Fund shares 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.

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 the 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 distributing contracts
and the election of trustees from its separate voting requirements.

Shareholder  inquiries  should  be made by  writing  directly  to the Fund or by
calling 800-821-5129. In addition, you can make inquiries through your dealer.

                    TABLE OF CONTENTS                                      Page

1.                  Investment Policies.......................................2
2.                  Trustees and Officers.....................................5
3.                  Investment Advisory and Other Services....................8
4.                  Portfolio Transactions....................................8
5.                  Purchases, Redemptions
                    and Shareholder Services.................................10
6.                  Performance..............................................11
7.                  Taxes....................................................12
8.                  Information About the Fund...............................12













<PAGE>





                                       1.
                               Investment Policies

FUNDAMENTAL INVESTMENT RESTRICTIONS
The Series is subject to the following  Investment  restrictions which cannot be
changed without approval of a majority of the Series'  outstanding  shares.  The
Series may not:  (1) borrow  money,  except  that (i) the Series may borrow from
banks (as  defined  in the Act) in  amounts  up to 33 1/3% of its  total  assets
(including the amount borrowed),  (ii) the Series may borrow up to an additional
5% of its total assets for temporary purposes,  (iii) the Series may obtain such
short-term  credit as may be necessary  for the clearance of purchases and sales
of portfolio securities and (iv) the Series 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 Series' Securities 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  Securities  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  the  Series  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 the
Series 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
the Series 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 its gross  assets,  buy
securities of one issuer  representing more than (i) 5% of the its gross assets,
or (ii) 10% of the voting  securities  of such issuer;  except,  in either case,
securities  issued  or  guaranteed  by the  U.S.  Government,  its  agencies  or
instrumentalities and securities of other investment companies;  (7) invest more
than 25% of its assets,  taken at market value,  in the securities of issuers in
any particular  industry (excluding (i) securities of the U.S.  Government,  its
agencies and  instrumentalities  and (ii) mortgage-backed  securities);  and (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,  we also are  subject to the  policies  described  in the
Prospectus  and the following  investment  policies  which may be changed by the
Board of Trustees without shareholder  approval.  The Series may not: (1) borrow
in excess of 5% of its gross assets taken at cost or market value,  whichever is
lower at the  time of  borrowing,  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 Board of Trustees; (4)
invest in securities of issuers which, with their predecessors, have a record of
less than three years' continuous operations, if more than 5% of a Series' total
assets would be invested in such securities (this restriction shall not apply to
investment companies,  mortgaged-backed  securities , asset-backed securities or
obligations  issued  or  guaranteed  by the U.S.  government,  its  agencies  or
instrumentalities);  (5) hold  securities  of any issuer  (excluding  investment
companies)  if more than 1/2 of 1% of the  securities  of such  issuer are owned
beneficially by one or more officers or trustees of the series or by one or more
partners  or  members of the Fund's  underwriter  orinvestment  adviser if these
owners in the aggregate own beneficially  more than 5% of the securities of such
issuer;  (6)  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 the Series' total assets (included within such limitation,  but not to exceed
2% of the Series'  total  assets,  are warrants  which are not listed on the New
York or American Stock Exchange or a major foreign exchange); (7) invest in real
estate limited partnership interests or

                                        2

<PAGE>

interests  in  oil,  gas or  other  mineral  leases,  or  exploration  or  other
development  programs,  except that the Fund may invest in securities  issued by
companies  that  engage  in oil,  gas or  other  mineral  exploration  or  other
development  activities;  (8) write,  purchase or sell puts,  calls,  straddles,
spreads or combinations  thereof,  except to the extent  permitted in the Fund's
prospectus and statement of additional information,  as they may be amended from
time to  time;  or (9)  buy  from  or  sell  to any of its  officers,  trustees,
employees, or its investment adviser or any of its officers,  trustees, partners
or employees,  any securities  other than shares of beneficial  interest in such
series.

Although  there is no  current  intention  to do so,  the  Series  may invest in
financial futures and options on financial futures.



                                       2.
                              Trustees and Officers

The following trustees are partners of Lord Abbett, The General Motors Building,
767 Fifth Avenue, New York, New York 10153-0203.  They have been associated with
Lord  Abbett  for over five  years and are also  officers  and/or  directors  or
trustees of the twelve other Lord  Abbett-sponsored  funds. They are "interested
persons"  as  defined  in the Act,  and as such,  may be  considered  to have an
indirect financial interest in the Rule 12b-1 Plans described in the Prospectus.

Robert S. Dow, age 52, Chairman and President
E. Wayne Nordberg, age 59, Vice President

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

E. Thayer Bigelow
Courtroom Television Network
600 Third Avenue
New York, New York

Chief Executive Officer of Courtroom Television Network.  Formerly President
and Chief Executive Officer of Time Warner Cable Programming, Inc. Prior to
that, President and Chief Operating Officer of Home Box Office, Inc.  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 67.

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

Retired.  Former Chairman of Independent Election Corporation of America,
a proxy tabulating firm.  Age 72.

C. Alan MacDonald
The Marketing Partnership, Inc.
27 Signal Road

                                        3

<PAGE>



Stamford, Connecticut

General Partner,  Managing  Director of Directorship  Inc. Formerly Chairman and
Chief Executive  Officer of Lincoln Foods,  Inc.,  manufacturer of branded snack
foods  (1992-1994).  Formerly  President and Chief  Executive  Officer of Nestle
Foods Corporation,  and prior to that,  President and Chief Executive Officer of
Stouffer Foods Corp., both subsidiaries of Nestle S.A. (Switzerland).  Currently
serves as Director of Den West Restaurant Co., J.B.  Williams,  and Fountainhead
Water Company. Age 64.

Hansel B. Millican, Jr.
Rochester Button Company
1100 Noblin Avenue
South Boston, Virginia

President and Chief Executive Officer of Rochester Button Company.  Age 69.

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

Chairman of Spencer Stuart U.S., an executive search consulting firm. Age 60.


The second column of the following table sets forth the compensation  accrued by
the Alpha Series for the Fund's outside  trustees.  The third and fourth columns
set forth  information  with respect to the retirement plan for outside trustees
maintained by the Lord Abbett-sponsored  funds (excluding the Alpha Series which
has not commenced  accuring  outside  trustees fees). The fifth column set forth
the  total  compensation  payable  by such  funds to the  outside  trusteed.  No
trustees  for the Fund  associated  with Lord  Abbett and no officer of the Fund
receive any compensation from the Fund for acting as a trustee or officer.

<TABLE>
<CAPTION>

                                 For the Fiscal Year Ended November  30, 1996
         (1)                  (2)                  (3)                    (4)                      (5)
                                               Pension or             Estimated Annual       For Year Ended
                                               Retirement Benefits    Benefits Upon          December 31, 1995
                                               Accrued by the         Retirement Proposed    Total Compensation
                                               other series of the    to be Paid by the      Accrued by the other
                                               Fund and               other series of        series of the Fund
                                               Twelve Other           the Fund               and Twelve
                           Compensation        Lord-Abbett            and Twelve             Other Lord
                           Accrued by          Abbett-sponsored       Other Lord Abbett-     Abbett-sponsored
Name of Director           the AlphaSeries1    Funds                  sponsored Funds2       Funds3


<S>                        <C>                 <C>                    <C>                    <C>
E. Thayer Bigelow          None                $11,563                $50,000                $41,700
Stewart S. Dixon           None                $22,283                $50,000                $42,000
John C. Jansing            None                $28,242                $50,000                $42,960
C. Alan MacDonald          None                $29,942                $50,000                $42,750
Hansel B. Millican, Jr.    None                $24,499                $50,000                $43,000
Thomas J. Neff             None                $15,990                $50,000                $42,000
<FN>

1. Outside  trustees  fees,  including  attendance  fees for board and committee
meetings,  are  allocated  among all Lord  Abbett-sponsored  funds  based on net
assets of each fund. The Alpha Series has not commenced  paying such fees.  When
the Series  starts to pay such fees,  a portion of the fees payable by the Alpha
Series to its  outside  trustees  will be  deferred  under a plan that deems the
deferred amounts to be invested in shares of the Fund for later  distribution to
the  trustees.  The amounts of the aggregate  compensation  payable by the other
series of the Fund as of November  30,  1996,  deemed  invested in Fund  shares,
including dividends
                                       4

<PAGE>
reinvested and changes in net asset value applicable to such deemed investments,
were: Mr. Bigelow,  $27,143; Mr. Dixon,  $101,138;  Mr. Jansing,  $125,269;  Mr.
MacDonald, $80,318; Mr. Millican, $126,245 and Mr. Neff, $125,238.

2. Each Lord Abbett-sponsored fund (excluding the Alpha Series) has a retirement
plan providing that outside trustees may receive annual retirement  benefits for
life equal to 100% of their final annual  retainers  following  retirement at or
after age 72 with at least 10 years of service.  Each plan also  provides  for a
reduced  benefit  upon  early   retirement   under  certain   circumstances,   a
pre-retirement death benefit and actuarially reduced  joint-and-survivor spousal
benefits. Such retirement plans, and the deferred compensation plans referred to
in footnote  one,  have been amended  recently to,  among other  things,  enable
outside  trustees  to elect to  convert  their  prospective  benefits  under the
retirement plans to equity-based  benefits under the deferred compensation plans
(to be renamed the  equity-based  plans).  The amounts  accrued in column 3 were
accrued by the Lord  Abbett-sponsored  funds (excluding the Alpha Series) during
the fiscal year ended  November 30, 1996 with respect to the  retirement  plans.
These accruals were based on the retirement plans as in effect before the recent
amendments  and on the fees  payable to outside  trustees of the Fund during the
year ended November 30, 1996. Under the recent  amendments,  the annual retainer
was increased to $50,000 and retirement benefits were increased from 80% to 100%
of a director's final annual  retainer.  The amounts stated in column 4 would be
payable annually under the retirement plans as recently amended if the directors
were to retire at age 72 and the annual retainers  payable by the funds were the
same as they are today.

3.  This  column  shows  aggregate  compensation,  including  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,  excluding the Alpha
Series, during the year ended December 31, 1995.
</FN>
</TABLE>

Except where indicated,  the following  executive officers of the Fund have been
associated  with Lord  Abbett for over five  years.  Of the  following,  Messrs.
Allen, Brown, Carper, Ms. Foster, Messrs. Hilstad,  Morris, Noelke, Nordberg and
Walsh are partners of Lord Abbett;  the others are employees;  Robert G. Morris,
age 53,  Executive  Vice  President;  Paul A. Hilstad,  age 55 (with Lord Abbett
since 1995 - formerly  Senior Vice  President  and  General  Counsel of American
Capital Management & Research,  Inc.), Vice President and Secretary;  Stephen I.
Allen,  age 44; Zane E. Brown,  age 46; Daniel E. Carper,  age 45; Daria Foster,
age 43; Lawrence H. Kaplan,  age 40 (with Lord Abbett since 1997 - formerly Vice
President and Chief Counsel of Salomon  Brothers Asset  Management Inc. - 1995 -
1997;  prior thereto  Senior Vice  President and  Associate  General  Counsel of
Kidder, Peabody & Co. Incorporated); Thomas F. Konop, age 55; Robert Noelke, age
40; E. Wayne Nordberg,  age 59; A. Edward  Oberhaus,  age 37, Keith F. O'Connor,
age 42, John J. Walsh,  age 61, Vice Presidents;  and Donna M. McManus,  age 36,
Treasurer.

The Fund  does not hold  annual  meetings  of  shareholders  unless  one or more
matters are  required to be acted on by  shareholders  under the Act.  Under the
Fund's Declaration of Trust,  shareholder  meetings may be called at any time by
certain  officers  of the  Fund or by a  majority  of the  trustees  (i) for the
purpose of taking action upon any matter  requiring the vote or authority of the
Fund's shareholders or upon other matters deemed to be necessary or desirable or
(ii) upon the  written  request of the  holders of at least  one-quarter  of the
shares of the Series outstanding and entitled to vote at the meeting.

As of November 30, 1997, our trustees and officers,  as a group, owned less than
1% of our outstanding shares


                                       3.
                     Investment Advisory and Other Services

As described under "Our Management" in the Prospectus, Lord Abbett is the Fund's
investment  manager.  Ten of the twelve general partners of Lord Abbett,  all of
whom are officers and/or directors of the Fund, are:  Stephen I. Allen,  Zane E.
Brown, Daniel E. Carper, Robert S. Dow, Daria L. Foster, Paul A. Hilstad, Robert
G. Morris,  Robert J.  Noelke,  E. Wayne  Nordberg and John J. Walsh.  The other
general  partners of Lord Abbett who are neither  officers nor  directors of the
Fund are W. Thomas Hudson and Michael McLaughlin. 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  under "Our  Management" in
the Prospectus.  Under the Management Agreement,  the Series is obligated to pay
Lord  Abbett a fee of .50% of 1% which Lord  Abbett has waived for the  current.
fiscal year.

Although not obligated to do so, Lord Abbett may assume expenses of the Series.


                                       5
<PAGE>


The Series pays all of its expenses not expressly assumed by Lord Abbett, or the
Lord  Abbett  Funds  including,  without  limitation,  12b-1  expenses,  outside
trustees' fees and expenses,  association membership dues, legal and audit fees,
taxes, transfer and dividend disbursing agent fees, shareholder servicing costs,
expenses relating to shareholder meetings,  expenses of preparing,  printing and
mailing share 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  and
brokerage and other expenses connected with executing portfolio transactions.

Deloitte & Touche LLP, Two World Financial Center, New York, New York 10281, are
the independent  public  accountants of the Series and must be approved at least
annually by our  trustees to  continue in such  capacity.  Deloitte & Touche LLP
perform audit  services for the Series  including the  examination  of financial
statements included in our annual report to shareholders.

The Bank of New York ("BNY") 40 Wall Street,  New York,  New York, is the Series
custodian.

                                       4.
                             Portfolio Transactions

The policy of the underlying  Lord Abbett Funds (in which the Series invests) is
to obtain best  execution on all our  portfolio  transactions,  which means that
they seek to have purchases and sales of portfolio  securities  executed at 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,  each  Lord  Abbett  Fund  may  pay,  as  described  below,  a higher
commission than some brokers might charge on the same  transaction.  This policy
governs  the  selection  of  brokers  or  dealers  and the  market  in which the
transaction is executed. To the extent permitted by law, they 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 each Lord Abbett 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.  For foreign securities  purchased
or sold by the  International  Series,  the selection is made by the Sub-Adviser
(i.e.  Fuji  Investment  Management  Co.  (Europe),  Ltd.).  The  Sub-Advisor is
responsible for obtaining best execution.

In  transactions  on stock  exchanges  in the  United  States,  commissions  are
negotiated,  whereas on many foreign stock  exchanges  commissions are fixed. In
cases of securities traded in the foreign and domestic over-the counter markets,
there is  generally  no stated  commission,  but the price  usually  includes an
undisclosed  commission or markup.  Purchases from  underwriters of newly-issued
securities for inclusion in a Lord Abbett Fund's portfolio  usually will include
a concession  paid to the  underwriter  by the issuer and purchases from dealers
serving as market  makers  will  include  the spread  between  the bid and asked
prices. When commissions are negotiated,  the Lord Abbett Funds pay a commission
rate that they  believe is  appropriate  to give  maximum  assurance  that their
brokers will provide them, on a continuing basis, the highest level of brokerage
services available. While they do not always seek the lowest possible commission
on  particular  trades,  they  pay  a  commission  rate  that  they  believe  is
appropriate to give maximum assurance that their brokers will provide them, on a
continuing basis, the highest level of brokerage services  available.  While the
Lord  Abbett  Funds do not always  seek in the lowest  possible  commissions  on
particular trades, they believe that their commission rates are in line with the
rates that many other  institutions  pay.  The Lord  Abbett  Funds'  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 the Lord  Abbett  Funds and the other  accounts  they  manage.  Such
services include showing the Lord Abbett Funds 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.

                                        6
<PAGE>
Some of the Lord Abbett Funds' brokers also provide  research  services at least
some of which are useful to Lord Abbett in their overall  responsibilities  with
respect to the Lord Abbett Funds 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 Lord Abbett Funds;  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 Lord Abbett
Funds;  and not all of such services will  necessarily be used by Lord Abbett in
connection with their advisory services to such other accounts.  The Lord Abbett
Funds have been  advised by Lord Abbett that  research  services  received  from
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,  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 the Lord Abbett Funds 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 the Lord Abbett
Funds'  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 a Lord Abbett Fund does,  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 a Lord  Abbett  Fund in the buying and  selling of the same  securities  as
described  above.  If these  clients wish to buy or sell the same  security as a
Lord  Abbett  Fund does,  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 a Lord Abbett Fund does.

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


                                       5.
                             Purchases, Redemptions
                            and Shareholder Services

Securities in the Series' portfolios are valued at their market values as of the
close of the NYSE. Market value will be determined as follows: securities listed
or admitted to trading privileges on any national or foreign securities exchange
are valued at the last sales price on the principal securities exchange on which
such  securities  are traded,  or, if there is no sale,  at the mean between the
last bid and asked  prices on such  exchange,  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.  Securities traded only
in the over-the-counter  market are valued at the mean between the bid and asked
prices, except that securities admitted to trading on the NASDAQ National Market
System  are  valued  at the  last  sales  price.  Securities  for  which  market
quotations are not available are valued at fair value under procedures  approved
by the Board of Trustees.

All assets and  liabilities  expressed in foreign  currencies  will be converted
into United  States  dollars at the mean between the buying and selling rates of
such currencies  against United States dollars last quoted by any major bank. If
such  quotations are not  available,  the rate of exchange will be determined in
accordance with policies established by the Fund's Board of Trustees.  The Board
of Trustees will monitor, on an ongoing basis, the Fund's method of valuation.

Information  concerning  how the Series  values its Shares for the  purchase and
redemption of its Shares is described in the Prospectus  under  "Purchases"  and
"Redemptions," respectively.


                                        7

<PAGE>



As disclosed in the Prospectus, the Series calculates its net asset value and is
otherwise  open for  business  on each day  that  the New  York  Stock  Exchange
("NYSE") is open for trading.  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.

The net asset value per share for the Class A shares will be  determined  in the
same  manner  as for the  Class B and C shares  (net  assets  divided  by shares
outstanding).  The Series'  Class A shares  will be sold with a front-end  sales
charge of 5.75%.

The maximum  offering  prices of the Series' Class A shares on February 25, 1998
was computed as follows:


                                                                       Alpha
Net asset value per share (net assets                                  Series
  divided by shares outstanding) ........................................$

Maximum offering price per
  share (net asset value divided by .9425 in both cases) ................$

The  offering  price of Class C shares of the Alpha  Series on December 15, 1997
was computed as follows:

  Net asset value per share (net assets divided by
    shares outstanding)         ......................... ..........     $

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

CONVERSION  OF CLASS B SHARES.  The  conversion  of Class B shares on the eighth
anniversary  of their purchase is subject to the  continuing  availability  of a
private  letter  ruling  from the  Internal  Revenue  Service,  or an opinion of
counsel or tax adviser, to the effect that the conversion of Class B shares does
not  constitute a taxable event for the holder under Federal  income tax law. If
such  a  revenue  ruling  or  opinion  is no  longer  available,  the  automatic
conversion  feature may be suspended,  in which event no further  conversions of
Class B shares would occur while such  suspension  remained in effect.  Although
Class B shares  could  then be  exchanged  for  Class A shares  on the  basis of
relative net asset value of the two classes,  without the  imposition of a sales
charge or fee, such exchange could constitute a taxable event for the holder.

CLASS A, B AND C RULE 12B-1 PLANS. As described in the Prospectus,  the Fund has
adopted a  Distribution  Plan and Agreement on behalf of the Series  pursuant to
Rule 12b-1 of the Act for each class of shares  available in the Series:  the "A
Plan", the "B Plan" and the "C Plan", respectively. In adopting each Plan and in
approving its  continuance,  the Board of Trustees has concluded that there is a
reasonable  likelihood that each Plan will benefit its respective Class and such
Class'  shareholders.  The expected  benefits  include  greater  sales and lower
redemptions  of Class  shares,  which  should  allow  each  Class to  maintain a
consistent  cash  flow,  and a higher  quality of  service  to  shareholders  by
authorized  institutions  than would otherwise be the case. Lord Abbett uses all
amounts  received under the A and C Plans for the Series for payments to dealers
for (i)  providing  continuous  services  to the Class A  shareholders,  such as
answering shareholder inquiries, maintaining records, and assisting shareholders
in making redemptions,  transfers,  additional  purchases and exchanges and (ii)
their assistance in distributing Class A shares of the Series.

Each Plan requires the trustees to review, on a quarterly basis, written reports
of all amounts  expended  pursuant to the Plan and the  purposes  for which such
expenditures  were  made.  Each  Plan  shall  continue  in  effect  only  if its
continuance is specifically  approved at least annually by vote of the trustees,
including a majority of the trustees who are not interested  persons of the Fund
and who have no direct or indirect  financial  interest in the  operation of the
Plan or in any  agreements  related to the Plan  ("outside  trustees"),  cast in
person at a meeting called for the purpose of voting on the Plan. No Plan may be
amended to  increase  materially  above the limits set forth  therein the amount
spent for distribution expenses thereunder without approval by a majority of the
outstanding voting securities

                                       8

<PAGE>



of the  applicable  class  and  the  approval  of a  majority  of the  trustees,
including a majority of the outside trustees. Each Plan may be terminated at any
time by vote of a majority of the  outside  trustees or by vote of a majority of
its Class's outstanding voting securities.

CONTINGENT  DEFERRED SALES CHARGES. A Contingent Deferred Sales Charge ("CDSC"),
applies upon early  redemption of shares  regardless  of class,  and (i) will be
assessed  on the  lesser  of the net  asset  value of the  shares at the time of
redemption  or the original  purchase  price and (ii) will not be imposed on the
amount of your account value represented by the increase in net asset value over
the initial  purchase  price  (including  increases due to the  reinvestment  of
dividends and capital gains distributions) and upon early redemption of shares.

CLASS A SHARES.  As  stated  in the  Prospectus,  a CDSC of 1% is  imposed  with
respect  to  those   Class  A  shares  (or  Class  A  shares  of  another   Lord
Abbett-sponsored  fund or series  acquired  through  exchange of such shares) on
which a Series has paid the one-time  distribution  fee of 1% if such shares are
redeemed out of the Lord Abbett-sponsored  family of funds within a period of 24
months from the end of the month in which the original sale occurred.

CLASS B  SHARES.  As  stated in the  Prospectus,  if Class B shares  (or Class B
shares of another Lord Abbett-sponsored fund or series acquired through exchange
of such shares) are redeemed  out of the Lord  Abbett-sponsored  family of funds
for cash before the sixth anniversary of their purchase, a CDSC will be deducted
from  the  redemption  proceeds.  The  Class  B CDSC  is  paid  to  Lord  Abbett
Distributor  to  reimburse  its  expenses,  in whole or in part,  for  providing
distribution-related service in connection with the sale of Class B shares.

To determine whether the CDSC applies to a redemption, the Series redeems shares
in the following  order:  (1) shares  acquired by  reinvestment of dividends and
capital gains  distributions,  (2) shares held on or after the sixth anniversary
of  their  purchase,   and  (3)  shares  held  the  longest  before  such  sixth
anniversary.

The amount of the contingent  deferred sales charge will depend on the number of
years since you invested and the dollar amount being redeemed,  according to the
following schedule:



Anniversary of the Day on                       Contingent Deferred Sales Charge
Which the Purchase Order Was Accepted           on Redemptions (As % of Amount
                                                Subject to Charge)

Before the 1st........................................................5.0%
On the 1st, before the 2nd............................................4.0%
On the 2nd, before the 3rd............................................3.0%
On the 3rd, before the 4th............................................3.0%
On the 4th, before the 5th............................................2.0%
On the 5th, before the 6th ...........................................1.0%
On or after the 6th anniversary........................................None

In the table, an  "anniversary" is the 365th day subsequent to the acceptance of
a purchase  order or a prior  anniversary.  All purchases are considered to have
been made on the business day on which the purchase order was accepted.

CLASS C SHARES. As stated in the Prospectus,  if Class C shares are redeemed for
cash before the first anniversary of their purchase,  the redeeming  shareholder
will be  required  to pay to the Series on behalf of Class C shares a CDSC of 1%
of the lower of cost or the then net asset value of Class C shares redeemed.  If
such shares are exchanged  into the same class of another Lord  Abbett-sponsored
fund and  subsequently  redeemed before the first  anniversary of their original
purchase,  the  charge  will be  collected  by the other  fund on behalf of this
Series' Class C shares.

GENERAL.  Each percentage (1% in the case of Class A and C shares and 5% through
1% in the case of Class B shares) used to calculate  CDSCs  described  above for
the Class A, Class B and Class C shares is sometimes  hereinafter referred to as
the "Applicable Percentage".


                                       9

<PAGE>



With respect to Class A and Class B shares, no CDSC is payable on redemptions by
participants or beneficiaries from employer-sponsored retirement plans under the
Internal  Revenue  Code  for  benefit  payments  due  to  plan  loans,  hardship
withdrawals,  death,  retirement or  separation  from service and for returns of
excess  contributions  to retirement  plan sponsors.  In the case of Class A and
Class C shares, the CDSC is received by the applicable Series and is intended to
reimburse  all or a portion of the  amount  paid by the Series if the shares are
redeemed  before the Series has had an  opportunity  to realize the  anticipated
benefits of having a long-term shareholder account in the Series. In the case of
Class B shares,  the CDSC is received by Lord Abbett Distributor and is intended
to  reimburse  its  expenses of  providing  distribution-related  service to the
Series (including recoupment of the commission payments made) in connection with
the sale of Class B shares before Lord Abbett Distributor has had an opportunity
to realize its anticipated  reimbursement by having such a long-term shareholder
account subject to the B Plan distribution fee.

The other funds and series which participate in the Telephone Exchange Privilege
(except (a) Lord Abbett U.S.  Government  Securities  Money  Market  Fund,  Inc.
("GSMMF"),  (b)  certain  series of Lord  Abbett  Tax-Free  Income Fund and Lord
Abbett  Tax-Free  Income Trust for which a Rule 12b-1 Plan is not yet in effect,
and (c) any authorized  institution's  affiliated  money market fund  satisfying
Lord  Abbett  Distributor  as to certain  omnibus  account  and other  criteria,
hereinafter  referred  to  as  an  "authorized  money  market  fund"  or  "AMMF"
(collectively,  the "Non-12b-1  Funds") have instituted a CDSC for each class on
the same terms and conditions.  No CDSC will be charged on an exchange of shares
of the same class between Lord Abbett funds or between such funds and AMMF. Upon
redemption of shares out of the Lord Abbett family of funds or out of AMMF,  the
CDSC  will be  charged  on  behalf  of and  paid:  (i) to the fund in which  the
original purchase  (subject to a CDSC) occurred,  in the case of the Class A and
Class C shares and (ii) to Lord Abbett  Distributor if the original purchase was
subject to a CDSC, in the case of the Class B shares.  Thus, if shares of a Lord
Abbett fund are  exchanged for shares of the same class of another such fund and
the shares of the same class  tendered  ("Exchanged  Shares")  are  subject to a
CDSC,  the CDSC will carry over to the shares of the same class being  acquired,
including GSMMF and AMMF ("Acquired  Shares").  Any CDSC that is carried over to
Acquired  Shares is calculated as if the holder of the Acquired  Shares had held
those shares from the date on which he or she became the holder of the Exchanged
Shares.  Although the Non-12b-1  Funds will not pay a distribution  fee on their
own shares, and will, therefore,  not impose their own CDSC, the Non-12b-1 Funds
will collect the CDSC (a) on behalf of other Lord Abbett  funds,  in the case of
the Class A and Class C shares and (b) on behalf of Lord Abbett Distributor,  in
the case of the Class B shares. Acquired Shares held in GSMMF and AMMF which are
subject to a CDSC will be  credited  with the time such shares are held in GSMMF
but will not be credited with the time such shares are held in AMMF.  Therefore,
if your Acquired Shares held in AMMF qualified for no CDSC or a lower Applicable
Percentage at the time of exchange into AMMF,  that  Applicable  Percentage will
apply to  redemptions  for cash from AMMF,  regardless of the time you have held
Acquired Shares in AMMF.

In no event will the amount of the CDSC exceed the Applicable  Percentage of the
lesser of (i) the net asset value of the shares  redeemed  or (ii) the  original
cost of such  shares (or of the  Exchanged  Shares for which  such  shares  were
acquired). No CDSC will be imposed when the investor redeems (i) amounts derived
from  increases in the value of the account above the total cost of shares being
redeemed due to increases in net asset value,  (ii) shares with respect to which
no Lord Abbett  fund paid a 12b-1 fee and,  in the case of Class B shares,  Lord
Abbett  Distributor  paid no sales  charge  or  service  fee  (including  shares
acquired   through   reinvestment   of  dividend   income  and   capital   gains
distributions) or (iii) shares which,  together with Exchanged Shares, have been
held  continuously for 24 months from the end of the month in which the original
sale  occurred  (in the case of Class A  shares);  for six years or more (in the
case  of  Class B  shares)  and for one  year or more  (in the  case of  Class C
shares). In determining whether a CDSC is payable, (a) shares not subject to the
CDSC will be redeemed  before  shares  subject to the CDSC and (b) of the shares
subject to a CDSC, those held the longest will be the first to be redeemed.

EXCHANGES.  The Prospectus briefly describes the Telephone  Exchange  Privilege.
You may  exchange  some or all of your shares of any class for those in the same
class of: (i) Lord Abbett-sponsored funds currently offered to the public with a
sales charge  (front-end,  back-end or level ), (ii) GSMMF or (iii) AMMF, to the
extent  offers  and  sales  may be made in  your  state.  You  should  read  the
prospectus of the other fund before exchanging. In establishing a new account by
exchange,  shares of the Series' being  exchanged  must have a value equal to at
least the minimum initial investment  required for the other fund into which the
exchange is made.

Shareholders in other Lord  Abbett-sponsored  funds and AMMF have the same right
to exchange  their  shares for the  corresponding  class of the Series'  shares.
Exchanges  are based on relative  net asset values on the day  instructions  are
received by the Series' in Kansas City if the instructions are received prior to
the close of the NYSE in proper form. No sales charges are imposed except in the
case of  exchanges  out of  GSMMF or AMMF  (unless  a sales  charge  (front-end,
back-end or level) was paid on the initial investment in a Lord Abbett-sponsored
fund).  Exercise of the exchange privilege will be treated as a sale for federal
income tax purposes, and,

                                       10

<PAGE>



depending on the circumstances, a gain or loss may be recognized. In the case of
an  exchange  of shares  that have been held for 90 days or less  where no sales
charge is payable on the  exchange,  the  original  sales charge  incurred  with
respect to the exchanged  shares will be taken into account in determining  gain
or loss on the exchange only to the extent such charge  exceeds the sales charge
that would have been payable on the acquired  shares had they been  acquired for
cash rather than by exchange.  The portion of the  original  sales charge not so
taken into account will increase the basis of the acquired shares.

Shareholders have the exchange  privilege unless they refuse it in writing.  You
should  not view the  exchange  privilege  as a means for  taking  advantage  of
short-term swings in the market,  and we reserve the right to terminate or limit
the privilege of any shareholder who makes frequent exchanges.  We can revoke or
modify the privilege for all shareholders upon 60 days' prior notice.  "Eligible
Funds" are AMMF and other Lord Abbett-sponsored funds which are eligible for the
exchange  privilege,  except Lord Abbett Series Fund  ("LASF")  which offers its
shares only in connection with certain variable annuity  contracts,  Lord Abbett
Equity  Fund  ("LAEF")  which is not issuing  shares,  and series of Lord Abbett
Research Fund not offered to the general public ("LARF").


STATEMENT OF INTENTION.  Under the terms of the Statement of Intention to invest
$50,000 or more over a 13-month period as described in the Prospectus, shares of
a Lord  Abbett-sponsored  fund (other than shares of LAEF, LASF, LARF, GSMMF and
AMMF,  unless holdings in GSMMF and AMMF are  attributable  to shares  exchanged
from a Lord  Abbett-sponsored  fund offered with a front-end,  back-end or level
sales charge) currently owned by you are credited as purchases (at their current
offering prices on the date the Statement is signed) toward achieving the stated
investment and reduced  initial sales charge for Class A shares.  Class A shares
valued  at 5% of the  amount  of  intended  purchases  are  escrowed  and may be
redeemed to cover the  additional  sales charge  payable if the Statement is not
completed.  The Statement of Intention is neither a binding obligation on you to
buy,  nor  on  the  Series  to  sell,  the  full  amount  indicated.

RIGHTS OF ACCUMULATION.  As stated in the Prospectus,  purchasers (as defined in
the Prospectus) may accumulate their investments in Lord Abbett-sponsored  funds
(other than LAEF, LARF,  LASF,  GSMMF, and AMMF unless holdings in GSMMF or AMMF
are attributable to shares exchanged from a Lord  Abbett-sponsored  fund offered
with a front-end,  back-end or level sales charge) so that a current investment,
plus the  purchaser's  holdings  valued at the current  maximum  offering price,
reach a level eligible for a discounted sales charge for Class A shares.  Rights
of Accumulation are not applicable to Class Y shares.

NET ASSET VALUE PURCHASES OF CLASS A SHARES.  As stated in the  Prospectus,  our
Class A shares may be purchased at net asset value by our  directors,  employees
of Lord Abbett,  employees of our  shareholder  servicing agent and employees of
any securities  dealer having a sales agreement with Lord Abbett who consents to
such   purchases  or  by  the  director  or  custodian   under  any  pension  or
profit-sharing plan or Payroll Deduction IRA established for the benefit of such
persons  or for the  benefit  of  employees  of any  national  securities  trade
organization  to which Lord Abbett  belongs or any company with an account(s) in
excess of $10  million  managed  by Lord  Abbett  on a  private-advisory-account
basis.  For purposes of this  paragraph,  the terms  "directors" and "employees"
include a director's or employee's  spouse  (including the surviving spouse of a
deceased director or employee). The terms "our directors" and "employees of Lord
Abbett" also include  retired  directors and employees and other family  members
thereof.

Our Class A shares also may be purchased at net asset value (a) at $1 million or
more,  (b) with  dividends and  distributions  from Class A shares of other Lord
Abbett-sponsored  funds,  except  for LARF,  LAEF and  LASF,  (c) under the loan
feature of the Lord Abbett- sponsored  prototype 403(b) plan for share purchases
representing the repayment of principal and interest,  (d) by certain authorized
brokers, dealers, registered Securities advisers or other financial institutions
who have entered into an agreement  with Lord Abbett  Distributor  in accordance
with  certain  standards   approved  by  Lord  Abbett   Distributor,   providing
specifically  for the use of our shares in particular  investment  products made
available for a fee to clients of such brokers,  dealers,  registered investment
advisers and other financial institutions, ("mutual fund wrap fee program"), (e)
by employees,  partners and owners of  unaffiliated  consultants and advisors to
Lord Abbett, Lord Abbett Distributor or Lord Abbett-sponsored  funds who consent
to such  purchase if such persons  provide  service to Lord Abbett,  Lord Abbett
Distributor or such funds on a continuing basis and are familiar with such funds
and (f) through Retirement Plans with at least 100 eligible employees.

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.


                                       11

<PAGE>



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.

Our Board of  Trustees  may  authorize  redemption  of all of the  shares in any
account  in which  there are  fewer  than 60  shares.  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 months  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.

DIV-MOVE.  Under the  Div-Move  service  described in each  Prospectus,  you can
invest the dividends paid on your account of any class into an existing  account
of the same class in any other  Eligible  Fund.  The account must be either your
account,  a joint  account for you and your  spouse,  a single  account for your
spouse,  or a  custodial  account  for your minor child under the age of 21. You
should read the prospectus of the other fund before investing.

INVEST-A-MATIC.  The Invest-A-Matic method of investing in the Series and/or any
other  Eligible Fund is described in the  Prospectus  with respect to Class A, B
and C shares. To avail yourself of this method you must complete the application
form,  selecting the time and amount of your bank checking  account  withdrawals
and the funds for investment,  include a voided, unsigned check and complete the
bank authorization.

SYSTEMATIC  WITHDRAWAL  PLANS.  The Systematic  Withdrawal  Plan ("SWP") also is
described  in the  Prospectus.  You may  establish  a SWP if you own or purchase
uncertificated shares having a current offering price value of at least $10,000.
Lord Abbett prototype  retirement plans have no such minimum.  With respect to a
SWP for Class B shares, on redemptions over 12% per year, the CDSC will apply to
the entire  redemption.  Therefore,  please  contact the Fund for  assistance in
minimizing the CDSC in this situation.  With respect to Class C shares, the CDSC
will be waived on and after the first  anniversary  of their  purchase.  The SWP
involves  the  planned  redemption  of shares on a periodic  basis by  receiving
either  fixed or  variable  amounts at  periodic  intervals.  Since the value of
shares  redeemed  may be more or  less  than  their  cost,  gain or loss  may be
recognized for income tax purposes on each periodic payment.  Normally,  you may
not make  regular  investments  at the same  time you are  receiving  systematic
withdrawal  payments because it is not in your interest to pay a sales charge on
new  investments  when in  effect  a  portion  of that  new  investment  is soon
withdrawn.  The minimum investment accepted while a withdrawal plan is in effect
is  $1,000.  The SWP may be  terminated  by you or by us at any time by  written
notice.

RETIREMENT  PLANS.  Each Prospectus  indicates the types of retirement plans for
which Lord Abbett provides forms and  explanations.  Lord Abbett makes available
the  retirement  plan  forms  and  custodial  agreements  for  IRAs  (Individual
Retirement  Accounts,  including Simple IRAs and Simplified  Employee Pensions),
403(b) plans and qualified pension and  profit-sharing  plans,  including 401(k)
plans. The forms name Investors Fiduciary Trust Company as custodian and contain
specific   information   about  the  plans.   Explanations  of  the  eligibility
requirements,  annual  custodial fees and allowable tax advantages and penalties
are set forth in the  relevant  plan  documents.  Adoption of any of these plans
should be on the advice of your legal counsel or qualified tax adviser.

                                       6.
                                Past Performance

The Series computes the average annual  compounded rate of total return for each
Class 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 $1,000,  which
represents a hypothetical initial investment.  The calculation assumes deduction
of the maximum sales charge(as  described in the next paragraph) from the amount
invested  and   reinvestment   of  all  income   dividends   and  capital  gains
distributions  on  the  reinvestment  dates  at  net  asset  value.  The  ending
redeemable  value is determined by assuming a complete  redemption at the end of
the period(s) covered by the average annual total return computation.

In  calculating  total  returns for Class A shares,  the current  maximum  sales
charge of 5.75% (as a  percentage  of the offering  price) is deducted  from the
initialinvestment  (unless the return is shown at net asset value).  For Class B
shares,  the payment of the applicable CDSC (5.0% prior to the first anniversary
of purchase, 4.0% prior to the second anniversary of purchase, 3.0% prior

                                       12

<PAGE>



to the third and  fourth  anniversaries  of  purchase,  2.0%  prior to the fifth
anniversary of purchase,  1.0% prior to the sixth anniversary of purchase and no
CDSC on and after the sixth  anniversary  of purchase) is applied to the Series'
investment  result for that class for the time  period  shown  (unless the total
return  is shown at net  asset  value).  For  Class C  shares,  the 1.0% CDSC is
applied to the  Series'  investment  result  for that class for the time  period
shown prior to the first  anniversary  of purchase  (unless the total  return is
shown at net asset  value).  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  theinvestment is redeemed
at the end of the period.

These figures represent past  performance,  and an investor should be aware that
the investment  return and principal value of a Series 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.

                                       7.
                                      Taxes

The value of any shares  redeemed by the Series or repurchased or otherwise sold
may be  more  or less  than  your  tax  basis  in the  shares  at the  time  the
redemption,  repurchase  or sale is made.  Any gain or loss  will  generally  be
taxable  for  federal  income  tax  purposes.  Any loss  realized  on the  sale,
redemption  or repurchase of Series 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 stock or securities 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  stock or  securities  that are
substantially identical.

The Series will be subject to a 4% non-deductible  excise tax on certain amounts
not distributed  (and not treated as having been  distributed) on a timely basis
in accordance with a calendar-year distribution requirement.  The Series intends
to  distribute  to  shareholders  each  year an  amount  adequate  to avoid  the
imposition of such excise tax. Dividends paid by the Series 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 adviser
regarding  the U.S. and foreign tax  consequences  of the ownership of shares of
the Series, 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
persons who own Fund shares.

                                       8.
                           Information About the Fund

Shareholder  Liability.  Delaware law provides that Fund  shareholders  shall be
entitled to the same limitations of personal  liability extended to stockholders
of private  corporations  for profit.  The courts of some states,  however,  may
decline to apply  Delaware law on this point.  The Fund's  Declaration  of Trust
contains  an  express   disclaimer  of  shareholder   liability  for  the  acts,
obligations,  or affairs of the Fund and requires  that a disclaimer be given in
each contract entered into or executed by the Fund. The Declaration provides for
indemnification  out  of  the  Fund's  property  of any  shareholder  or  former
shareholder  held personally  liable for the obligations of the Fund.  Thus, the
risk of a  shareholder  incurring  financial  loss  on  account  of  shareholder
liability is limited to  circumstances  in which Delaware law does not apply, no
contractual limitation of liability was in effect and the portfolio is unable to
meet its obligations.  Lord Abbett believes that, in view of the above, the risk
of personal liability to shareholders is extremely remote.

Under The Fund's  Declaration of Trust,  the trustees may,  without  shareholder
vote,  cause the Fund to merge or  consolidate  into,  or sell and convey all or
substantially all of, the assets of the Fund to one or more trusts, partnerships
or  corporations,  so long as the  surviving  entity is an  open-end  management
investment  company  that will  succeed  to or assume  the  Fund's  registration
statement.  In addition,  the trustees may, without  shareholder vote, cause the
Fund to be incorporated under Delaware law.


                                       13

<PAGE>


Derivative  actions  on behalf of the Fund may be brought  only by  shareholders
owning not less than 50% of the then outstanding shares of the Fund.

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 account. In engaging
in  personal  securities  transactions,  however,  such  persons  are subject to
requirements  and  restrictions  contained  in the Trust'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 seven days
before  or after  any Lord  Abbett-  sponsored  fund  trades  in such  security,
profiting  from  trades  of the same  security  within  60 days and  trading  on
material  non-public  information.  The Code imposes  similar  requirements  and
restrictions on the independent trustees of the Trust to the extent contemplated
by the recommendations of such Advisory Group.


                                       9.
                              Financial Statements


The financial  statements for fiscal year ended November 30, 1996 and the fiscal
half  year  ended  May 31,  1997  and the  report  of  Deloitte  &  Touche  LLP,
independent public accountants, on such annual financial statements contained in
the 1996 Annual Report to Shareholders of the Lord Abbett  Securities  Trust 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.


                                       15





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