LORD ABBETT INVESTMENT TRUST
485BPOS, 1996-07-12
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                                                   1933 Act File No. 33-68090
                                                   1940 Act File No. 811-7988


                        SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-1A

          REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933          [X]
                         Post-Effective Amendment No. 9                    [X]
                                      And

            REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT        [X]
                                    OF 1940
                                Amendment No. 8                            [X]


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

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

                  Registrant's Telephone Number (212) 848-1800

                 Kenneth B. Cutler, Vice President & Secretary
                    767 FIFTH AVENUE, NEW YORK, N. Y. 10153
                    (Name and Address of Agent for Service)


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

           immediately on filing pursuant to paragraph (b) of Rule 485

   X       on July 15, 1996 pursuant to paragraph (b) of Rule 485
- ---------

           60 days after filing pursuant to paragraph (a) (1) of Rule 485

           on (date) pursuant to paragraph (a) (1) of Rule 485

           75 days after filing pursuant to paragraph (a) (2) of Rule 485

           on (date) pursuant to paragraph (a) (2) of Rule 485

If appropriate, check the following box:

     this  post-effective  amendment  designates  a  new  effective  date  for 
     a previously filed post-effective amendment

Registrant  has  registered on behalf of its Limited  Duration  U.S.  Government
Securities  Series and Balanced Series an indefinite  amount of securities under
the Securities Act of 1933 pursuant to Rule  24f-2(a)(1) and a Rule 24f-2 Notice
for  these  two  series  for the most  recent  fiscal  year was  filed  with the
Commission on or about December 28, 1996.


<PAGE>

                          LORD ABBETT INVESTMENT TRUST
                                      N-1A
                              Cross Reference Sheet
                         Post-Effective Amendment No. 9
                             Pursuant to Rule 481(a)


Form N-1A                              Location In Prospectus or
Item No.                               Statement of Additional Information
                                       ----------------------------------- 
1                                      Cover Page
2                                      Fee Table
3                                      N/A
4 (a) (i)                              Cover Page
4 (a) (ii)I                            Investment Objectives
4 (b) (c)                              How We Invest
5 (a) (b) (c)                          Our Management; Last Page
5 (d)                                  N/A
5 (e)                                  Our Management
5 (f)                                  N/A
5 (g)                                  Purchases
6 (a)                                  Cover Page
6 (b)  (c) (d)                         N/A
6 (e)                                  Cover Page; Purchases
6 (f)  (g)                             Dividends, Capital Gains
                                       Distributions and Taxes
7 (a)                                  Back Cover Page
7 (b) (c) (d)                          Purchases
8 (a)  (b) (c) (d)                     Redemptions
                                       Purchases, Redemptions and Shareholder 
                                        Services
9                                      N/A
10                                     Cover Page
11                                     Cover Page -- Table of Contents
12                                     N/A
13 (a)  (b) (c) (d)                    Investment Objectives and Policies
14                                     Trustees and Officers
15 (a)  (b) (c)                        Trustees and Officers
16 (a) (i)                             Investment Advisory and Other
                                       Services
16 (a) (ii)                            Trustees and Officers
16 (a) (iii)                           Investment Advisory and Other
                                       Services
16 (b)                                 Investment Advisory and Other Services
16 (c)  (d) (e) (g)                    N/A
16 (f)                                 Purchases, Redemptions and Shareholder
                                         Services
16 (h)                                 Investment Advisory and Other Services
16 (i)                                 N/A
17 (a)                                 Portfolio Transactions
17 (b)                                 N/A
17 (c)                                 Portfolio Transactions
17 (d) (e)                             N/A
18 (a)                                 Cover Page
18 (b)                                 N/A


                                       2
<PAGE>
Form N-1A                              Location in Prospectus or
Item No.                               Statement of Additional Information
- --------                               ----------------------------------- 

19 (a) (b)                             Purchases;   Redemptions  and  
                                        Shareholder  Services;   Notes  to  
                                        Financial
                                       Statements
19 (c)                                 N/A
20                                     Taxes
21 (a)                                 Purchases, Redemptions and Shareholder 
                                         Services
21 (b) (c)                             N/A
22                                     N/A
22 (b)                                 Past Performance
23                                     Financial Statements; Supplementary

                                       3
<PAGE>



LORD ABBETT INVESTMENT TRUST
THE GENERAL MOTORS BUILDING
767 FIFTH AVENUE
NEW YORK, NY 10153-0203
800-426-1130

LORD ABBETT INVESTMENT TRUST (THE "FUND") IS A MUTUAL FUND CURRENTLY  CONSISTING
OF THREE  SERIES -- LORD ABBETT  LIMITED  DURATION  U.S.  GOVERNMENT  SECURITIES
SERIES  ("LIMITED  DURATION  GOVERNMENT  SERIES")  LORD ABBETT  BALANCED  SERIES
("BALANCED  SERIES") AND LORD ABBETT U.S.  GOVERNMENT  SECURITIES  SERIES ("U.S.
GOVERNMENT SECURITIES SERIES").  EACH SERIES IS SOMETIMES REFERRED TO AS "WE" OR
THE "SERIES"  INDIVIDUALLY  OR  COLLECTIVELY.  FURTHER SERIES AND CLASSES MAY BE
ADDED IN THE FUTURE. THE U.S. GOVERNMENT  SECURITIES SERIES OFFERS THREE CLASSES
OF SHARES:  CLASS A, B AND C. THE  LIMITED  DURATION  GOVERNMENT  SERIES AND THE
BALANCED  SERIES OFFER TWO CLASSES OF SHARES:  CLASS A AND C. THE EXISTENCE OF A
MULTI-CLASS STRUCTURE IN THE SERIES PROVIDES INVESTORS WITH DIFFERENT INVESTMENT
OPTIONS IN PURCHASING  SHARES OF THE SERIES.  SEE  "INVESTMENT  IN A MULTI-CLASS
SERIES" UNDER "PURCHASES" FOR A DESCRIPTION OF THESE CHOICES. THE CLASS B SHARES
OF THE U.S.  GOVERNMENT  SECURITIES SERIES WILL BE OFFERED TO THE PUBLIC FOR THE
FIRST TIME ON OR ABOUT AUGUST 1, 1996.  LIMITED DURATION  GOVERNMENT SERIES. THE
INVESTMENT  OBJECTIVE  OF THE  SERIES IS TO SEEK A HIGH  LEVEL OF INCOME  FROM A
PORTFOLIO CONSISTING  PRIMARILY OF LIMITED DURATION U.S. GOVERNMENT  SECURITIES.
BALANCED  SERIES.  THE  INVESTMENT  OBJECTIVE  OF THE SERIES IS TO SEEK  CURRENT
INCOME AND CAPITAL GROWTH.

U.S.  GOVERNMENT  SECURITIES SERIES.  THE INVESTMENT  OBJECTIVE OF THE SERIES IS
HIGH CURRENT INCOME  CONSISTENT  WITH  REASONABLE  RISK. SEE "HOW WE INVEST" FOR
MORE  INFORMATION.  THERE CAN BE NO  ASSURANCE  THAT ANY SERIES WILL ACHIEVE ITS
OBJECTIVE.  THIS PROSPECTUS SETS FORTH CONCISELY THE INFORMATION  ABOUT THE FUND
AND EACH  SERIES THAT A  PROSPECTIVE  INVESTOR  SHOULD  KNOW  BEFORE  INVESTING.
ADDITIONAL  INFORMATION  ABOUT THE FUND AND EACH  SERIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION AND IS AVAILABLE UPON REQUEST WITHOUT CHARGE.
THE STATEMENT OF ADDITIONAL  INFORMATION IS  INCORPORATED BY REFERENCE INTO THIS
PROSPECTUS AND MAY BE OBTAINED WITHOUT CHARGE BY WRITING DIRECTLY TO THE FUND OR
BY CALLING THE FUND AT  800-874-3733 -- ASK FOR "PART B OF THE PROSPECTUS -- THE
STATEMENT OF ADDITIONAL INFORMATION." THE DATE OF THIS PROSPECTUS,  AND THE DATE
OF THE STATEMENT OF ADDITIONAL INFORMATION, IS JULY 15, 1996.


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 EACH 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 EACH SERIES INVOLVES RISKS, INCLUDING THE POSSIBLE LOSS
OF PRINCIPAL.


        1       Investment Objectives   2
        2       Fee Table               2
        3       Financial Highlights    3
        4       How We Invest           4
        5       Purchases               9
        6       Shareholder Services    18
        7       Our Management          19
        8       Dividends, Capital Gains
                Distributions and Taxes 20
        9       Redemptions             21
        10      Performance             22

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    INVESTMENT OBJECTIVES

The investment  objective of the Limited Duration Government Series is to seek a
high level of income from a portfolio  consisting  primarily of limited duration
U.S. Government  securities.  The investment objective of the Balanced Series is
to seek current income and capital growth.  See "How We Invest".  The investment
objective  of the U.S.  Government  Securities  Series is to seek  high  current
income  consistent with  reasonable  risk. For this purpose,  "reasonable  risk"
means that the  Series,  over time,  will have a  volatility  approximating  the
Lehman Government Bond Index.

2    FEE TABLE

A summary of each Series' expenses is set forth in the table below. This example
should not be considered a  representation  of past or future  expenses.  Actual
expenses may be greater or less than those shown.

<TABLE>
<CAPTION>

                                                    Class A                       Class B                       Class C
                                                    Shares                        Shares                        Shares
                                        -----------------------------------     -----------    -------------------------------------
                                        Limited      Balanced    U.S. Gov't      U.S. Gov't      Limited       Balanced   U.S. Gov't
                                        Duration                 Securities      Securities      Duration                 Securities
<S>                                  <C>          <C>         <C>             <C>                <C>            <C>        <C>
Shareholder Transaction Expenses
(as a percentage of offering price)
Maximum Sales Load(1) on Purchases
(See "Purchases")                     3.00%(2)(3)  4.75%(2)(3)  4.75%(2)(3)         None          None            None       None
Deferred Sales Load(1)
 (See "Purchases")                    None(2)      None(2)      None(2)         5% if shares    1% if shares are redeemed before
                                                                                are redeemed    1st anniversary of purchase(2)(3)
                                                                                before 1st
                                                                                anniversary of
                                                                                purchase,
                                                                                declining  to 1%
                                                                                before 6th
                                                                                anniversary and
                                                                                eliminated on
                                                                                and after 6th
                                                                                anniversary(2)(3)
Annual Fund Operating Expenses(4)
(as a percentage of
average net assets)
Management Fees
 (See "Our Management")        0.25%(5)       0.00%(5)      0.49%(6)           0.49%             0.25%     0.00%(5)      0.49%
12b-1 Fees (See "Purchases")   0.00%(2)(3)    0.00%(2)(3)   0.27%(2)(3)        1.00%             0.85%     0.22%+        0.92%(2)(3)
Other Expenses
(See "Our Management")         0.40%(5)       0.31%(5)+     0.15%              0.15%             0.40%     0.31%+        0.15%
Total Operating Expenses       0.65%(5)       0.31%(5)+     0.91%              1.64%             1.50%     0.53%(5)+     1.56%

+Annualized.

<FN>
Example:  Assume each 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 have paid the following total expenses
if you closed your account after the number of years indicated.

                                   1 year(4)       3 years(4)      5 years(4)      10 years(4)

U.S. Government Securities Series
                Class A            $56                 $75            $95            $154
                Class B            $56                 $80            $98            $175(7)
                Class C            $16                 $49            $85            $186
Limited Duration Government Series
                Class A            $36                 $50            $65            $108
                Class C            $15                 $47            $82            $179
Balanced Series
                Class A            $51                 $57            $64            $  85
                Class C            $ 5                 $17            $30            $  66

(1)Sales  "load" is referred to as sales  "charge" and "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.

(2)See "Purchases" for descriptions of the Class A front-end sales charges,  the
CDSC payable on certain  redemptions  of Class A, Class B and Class C shares and
separate  Rule 12b-1 plans  applicable to each class of shares of each Series of
the Fund. The CDSC reimburses:  (a) the Series, in the case of Class A and Class
C shares,  and (b) Lord Abbett  Distributor  LLC, in the case of Class B shares.
For this reason the estimated Class B share 12b-1 fees are slightly greater than
the estimated Class C share 12b-1 fees.

(3)Although no Series, with respect to the Class B and Class C shares, charges a
front-end sales charge,  investors  should be aware that long-term  shareholders
may pay, under the Rule 12b-1 plans applicable to the Class B and Class C shares
(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, long-term,  such maximum may
be exceeded due to the Rule 12b-1 plan appli-
        cable to Class A shares  which  permits  a 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 of the U.S. Government  Securities Series have
been restated to reflect estimated current fees under the recently amended Class
A 12b-1  plans;  the actual 12b-1 fees for such shares for the fiscal year ended
November 30, 1995 under the former plan were 0.25%. The Class A share 12b-1 fees
for the  Limited  Duration  Series and the  Balanced  Series  have been  omitted
because  neither Series can predict when its A Plan will become  effective.  The
Class A share  12b-1 Plan for those  Series will go into effect on the first day
of the  calendar  quarter  subsequent  to the Series' net assets  reaching  $100
million  (in the case of the  Limited  Duration  Series) and $50 million (in the
case of the Balanced Series).

(4)The annual  operating  expenses shown in the summary are the actual  expenses
for the fiscal year ended November 30, 1995 with respect to the U.S.  Government
Securities  Series and October 31, 1995 with respect to the Limited Duration and
Balanced Series except for (i) a lower management fee as explained in note 6 and
(ii) the substitution of estimated 12b-1 fees for for Class A, B and C shares as
explained in notes 2 and 3.

(5)Although  not  obligated to, Lord,  Abbett & Co. ("Lord  Abbett") may waive a
portion of its  management  fee and assume other  expenses  with respect to each
Series.  It has waived a portion of its  management  fee for each of the Limited
Duration  Government  Series and the Balanced  Series during the past year.  The
management fee would have been 0.50% for the Limited Duration  Government Series
and  0.75%  for the  Balanced  Series  absent  such  waiver.  Lord  Abbett  also
subsidized  expenses with respect to the Balanced Series.  Without such a waiver
and/or  subsidy  these  expense  ratios  would  have been  1.71% and 1.07%  (not
annualized) for the Limited Duration  Government Series and the Balanced Series,
respectively.

(6)Based  on total  operating  expenses  shown in the table  above.  The  annual
management  fee with respect to the U.S.  Government  Securities  Series changes
from 0.50% to 0.45% when the Series'  average daily assets reach $3 billion.  On
July 12, 1996 (as a result of the  acquisition of the assets of Lord Abbett U.S.
Government  Securities Fund, Inc. and the Lord Abbett U.S. Government Securities
Trust,  a series of Lord Abbett  Securities  Trust) such average  increased to a
level  which  reduced  the  management  fee to 0.49%  instead  of the actual fee
(0.50%) for the fiscal year ended November 30, 1995.

(7)Based  on  conversion  of Class B shares  to  Class A  shares  on the  eighth
anniversary  of the  purchase  of Class B shares  and  closing  your  account by
redeeming Class A shares after ten years.

The  foregoing  is provided  to give  investors  a better  understanding  of the
expenses that are incurred by an investment in each Series.
</FN>
</TABLE>

3    FINANCIAL HIGHLIGHTS

The  following  tables have been  audited by Deloitte & Touche LLP,  independent
public accountants, in connection with their annual audits of the Fund's Class A
share  Financial  Statements,  whose report thereon is incorporated by reference
into the Statement of Additional  Information  and may be obtained upon request,
and has been  included  herein in reliance  upon their  authority  as experts in
auditing and accounting.  On July 12, 1996, the Fund acquired the assets of Lord
Abbett U.S.  Government  Securities Fund, Inc. (the "Acquired Fund") in exchange
for  Class A shares  of the  Fund's  newly-created  U.S.  Government  Securities
Series.  All  figures  shown  below for the U.S.  Government  Securities  Series
reflect the performance history of the Acquired Fund.

<TABLE>
<CAPTION>

                                                                 Balanced Series          Limited Duration Government Series
                                                                 December 27, 1994                                 November 4, 1993
                                                                 (Commencement            Year Ended               (Commencement
Per Class A Share + Operating                                    of Operations) to        October 31,              of Operations) to
Performance:                                                     October 31, 1995           1995                   October 31, 1994
<S>                                                                   <C>                 <C>                           <C>  
Net asset value, beginning of period                                  $9.52               $4.44                         $4.85
Income from investment operations
Net investment income                                                 .365++              .2316                         .2650++
Net realized and unrealized
gain (loss) on securities                                             1.185               .1017                         (.4123)
Total from investment operations                                      1.55                .3333                         (.1473)
Less Distributions
Dividends from net investment income                                  (.36)               (.2433)                       (.2627)
Net asset value, end of period                                        $10.71              $4.53                         $4.44
Total Return*                                                         16.32%++            8.16%                         (3.09)%++
Ratios/Supplemental Data:
Net assets, end of period (000)                                       $5,713              $8,922                        $10,256
Ratios to Average Net Assets:
Expenses, including waiver                                            .31%++              1.40%                         0.89%++
Expenses, excluding waiver                                            1.07%++             1.71%                         0.89%++
Net investment income                                                 3.40%++             5.62%                         5.61%++
Portfolio turnover rate                                               131.80%             222.00%                       895.63%
<FN>
*Total  return does not consider the effects of  front-end  sales or  contingent
deferred sales charges.  +Each Series had only one class of shares prior to July
12, 1996. That class of shares is now designated Class A shares.
++Not annualized.
  See Notes to Financial Statements.
</FN>
</TABLE>
<TABLE>
<CAPTION>

        U.S. Government Securities Series
Per Class A Share+ Operating                      Year Ended November 30,
Performance:                                      1995                1994
<S>                                               <C>                 <C>  
Net asset value, beginning of year                $2.59               $3.00
Income from investment operations
Net investment income                             .235                .247
Net realized and unrealized
gain (loss) on securities                         .136                (.3685)
Total from investment operations                  .371                (.1215)
Distributions
Dividends from net investment income              (.231)              (.246)
Distribution from net realized gain                --                 (.0425)
Net asset value, end of year                      $2.73               $2.59
Total Return*                                     14.89%              (4.24)%
Ratios/Supplemental Data:
Net assets, end of year (000)                     $3,272,865        $3,232,012
Ratios to Average Net Assets:
Expenses                                          .90%                .90%
Net investment income                             8.85%               8.92%
Portfolio turnover rate                           544.31%             790.57%
<FN>

*Total  return does not consider the effects of  front-end  sales or  contingent
deferred sales  charges.  +The Series had only one Class of shares prior to July
12, 1996. That class of shares is now designated Class A shares.
See Notes to Financial Statements.
</FN>
</TABLE>

4    HOW WE INVEST

U.S. Government  Securities Series. The U.S. Government  Securities Series seeks
high current income with  relatively low risk of price decline.  To achieve this
goal,  the Series will invest in U.S.  Government  securities.  U.S.  Government
securities include: (1) obligations issued by the U.S. Treasury,  differing only
in their interest rates, maturities and time of issuance, and including Treasury
bills maturing in one year or less,  Treasury notes maturing in one to ten years
and Treasury bonds with maturities of over ten years and (2) obligations  issued
or  guaranteed  by U.S.  Government  agencies  and  instrumentalities  which are
supported by any of the  following:  (a) the full faith and credit of the United
States (such as Government National Mortgage Association ("GNMA") certificates),
(b) the right of the issuer to borrow  from the U.S.  Treasury or (c) the credit
of the instrumentality.  Agencies and instrumentalities include the Federal Home
Loan Bank, Federal Home Loan Mortgage  Corporation  ("FHLMC"),  Federal National
Mortgage Association ("FNMA"),  Federal Farm Credit Bank, Student Loan Marketing
Association,  Tennessee Valley Authority,  Financing  Corporation and Resolution
Funding  Corporation.  Obligations  issued  by the  U.S.  Treasury  and by  U.S.
Government  agencies  and  instrumentalities  include  those so issued in a form
separated into their  component  parts of principal and coupon  payments,  i.e.,
"component  securities."  A  security  backed  by the  U.S.  Treasury  or a U.S.
Government  agency,  although  providing  substantial  protection against credit
risk, is guaranteed only as to the timely payment of interest and principal when
held to maturity.  The market prices for such  securities are not guaranteed and
will fluctuate and,  accordingly,  such  securities  will not protect  investors
against  price  changes due to changing  interest  rates.  Longer  maturity U.S.
Government  securities  may  exhibit  greater  price  volatility  in response to
changes in interest rates than shorter maturity securities. In addition, certain
U.S. Government securities may show even greater volatility if, for example, the
interest  payment  component  has been removed,  as with zero coupon bonds.  The
value of shares of the U.S.  Government  Securities  Series  will  change as the
general levels of interest rates fluctuate.  When interest rates decline,  share
value can be expected to rise. Conversely, when interest rates rise, share value
can be expected to decline.

Investments  in GNMA  certificates,  which are pools of home mortgages and other
mortgage-backed  securities, are subject to prepayment of principal as mortgages
are  prepaid.  The  U.S.  Government   Securities  Series  must  reinvest  these
prepayments at prevailing  rates,  which may be lower than the yield of the GNMA
certificate or other mortgage-backed  securities.  These prepayments will result
in  a  further   reduction  in  principal  if  the  GNMA  certificate  or  other
mortgage-backed  security is trading over par.  Mortgage  prepayments  generally
increase in a falling interest rate environment

<PAGE>


and, accordingly, often result in a reduction of principal. In a rising interest
rate  environment,  prepayments tend to decline which increases the duration and
volatility of such GNMA certificates.

The U.S.  Government  Securities  Series may invest in liquid  interest-only and
principal-only  mortgage-backed  securities backed by fixed-rate mortgages under
guidelines  established by the Board of Trustees of the Fund to assure that they
may be sold  promptly in the ordinary  course of business at a value  reasonably
close to that used in calculating  the U.S.  Government  Securities  Series' net
asset value per share.

Although the longer maturity U.S. Government securities, zero coupon bonds, GNMA
certificates  and  other  mortgage-backed  securities  mentioned  above  may  be
volatile,   this   volatility,   while  not   eliminated,   is  managed  by  the
above-mentioned  policy of Lord  Abbett to  maintain  the  average  duration  of
securities held by the Series at between three and eight years.

While growth of capital is not an objective  of the U.S.  Government  Securities
Series,  capital  appreciation  may result from  efforts to secure high  current
income.

Limited Duration  Government Series.  The Limited Duration  Government Series is
authorized to invest  solely in a portfolio of short- and  intermediate-duration
U.S.  Government  securities.  Such securities include direct obligations of the
United States Treasury (such as Treasury bills, notes and bonds) and obligations
issued by United States  Government  agencies and  instrumentalities,  including
securities  that are supported by the full faith and credit of the United States
such as GNMA  certificates,  securities  that are  supported by the right of the
issuer to borrow from the United  States  Treasury  (such as  securities  of the
Federal Home Loan Banks) and securities supported solely by the creditworthiness
of the issuer such as FNMA and FHLMC securities. Such U.S. Government securities
also include those issued or guaranteed by the U.S. Government,  its agencies or
instrumentalities  in a form separated into their  component  parts of principal
and  coupon  payments,   i.e.,  "component   securities",   and  mortgage-backed
securities  issued  or  guaranteed  by the  U.S.  Government,  its  agencies  or
instrumentalities. Treasury STRIPS are direct obligations of the U.S. Government
and are examples of component  securities  whereby  Treasury bonds and notes are
separated  on the books of the Federal  Reserve  into their  component  parts of
principal and coupon payments or principal and coupon strips.

The maximum dollar-weighted  effective average maturity (not stated maturity) of
the portfolio will be seven years.  This effective average maturity measures the
average time principal is outstanding and (a) is different from duration because
it does not  measure  all cash flows and (b)  includes  securities  that  prepay
principal,  thus shortening their  dollar-weighted  effective  average maturity.
("Duration" is generally the weighted  average time to receipt of all cash flows
due by maturity from an obligation.) Stated maturity is the stated time to final
principal  payment  of an  obligation  without  regard  to  any  prepayments  of
principal.  Therefore,  the maximum average stated maturity of the portfolio may
be substantially longer than seven years.

The Limited  Duration  Government  Series is not a money  market  fund.  A money
market fund is designed for stability of principal;  consequently,  its level of
income fluctuates. A limited duration
U.S. Government  securities fund, due to the nature of its portfolio securities,
generally  has a steadier  and higher  level of income than a money market fund.
However,  the Series' share value will fluctuate more than a money market fund's
over time.  Historically,  a portfolio with a duration averaging between one and
four years, such as the Limited Duration Government Series' portfolio,  tends to
have  steadier and higher  income over the course of the  business  cycle than a
short-term  money market fund portfolio.  In such a business cycle,  the Limited
Duration Government Series'

<PAGE>


portfolio  can "lock in" rates  over a longer  period,  allowing  its  income to
continue  over that period at the  locked-in  level which  adjusts less often in
response  to  changing   interest  rates,   thereby   softening  the  impact  of
interest-rate  changes  which a money  market fund  portfolio is exposed to more
often because it can only lock in rates for a shorter  period.  Of course,  past
performance is no guarantee of future results.

Unlike a money market fund, the Limited Duration Government Series does not seek
to   maintain  a  stable  net  asset  value  and  may  not  be  able  to  return
dollar-for-dollar the money invested. The level of income will vary depending on
interest  rates and the  portfolio.  In general,  because  the Limited  Duration
Government  Series invests in longer term  securities  than a money market fund,
the value of its shares will  fluctuate  more than a money market fund, but less
than, for example,  a long-term U.S.  Government  securities fund. When interest
rates  rise,  the value of  securities  in the  portfolio,  as well as the share
value, generally will fall. Conversely, when rates fall, the value of securities
in the portfolio and the share value generally will rise.  Component  securities
in which the Series may invest may show greater price  volatility in response to
interest-rate  changes than will other debt  securities  in which the Series may
invest.  The value of principal-only  component  securities will be reduced in a
rising  interest-rate  environment  or  as  the  expected  amount  of  principal
prepayments  declines.  The value of interest-only  component securities will be
reduced in a falling interest-rate environment or in expectation that the amount
of principal prepayments will increase.  Although the U.S. Government securities
in which the Limited Duration  Government Series may invest are guaranteed as to
timely payment of interest and principal,  the market prices for such securities
are not guaranteed  and, as with other bond  investments,  will rise and fall in
value as interest rates change.

The  Limited  Duration   Government  Series  seeks  to  reduce  the  effects  of
interest-rate  volatility  on principal  by limiting  the average  duration to a
range of one to four years. If in the judgment of Fund
management  (hereinafter  meaning the officers of the Fund on a day-to-day basis
subject to the overall direction of the Fund's Board of Trustees with the advice
of Lord Abbett)  rates are low, it will tend to shorten the average  duration to
one year or less. Conversely, if in its judgment rates are high, it will tend to
extend the average duration to four years or less.

The Limited Duration Government Series limits its investments in mortgage-backed
securities to those issued or  guaranteed by the U. S.  Government or one of its
agencies   or   instrumentalities,   primarily   the   GNMA,   FNMA  or   FHLMC.
Mortgage-backed  securities guaranteed by GNMA consist of pass-through interests
in pools of mortgage loans guaranteed or issued by agencies or instrumentalities
of the United States.  Mortgage-backed  securities issued by FNMA and FHLMC most
often represent  pass-through  interests in pools of conventional mortgage loans
or participations in the pools. Such "pass-through"  mortgage-backed  securities
represent   undivided   interests  in  the  underlying   mortgage  pool,  and  a
proportionate  share of both regular  interest and  principal  payments  (net of
certain  fees),  as well  as  unscheduled  early  prepayment  on the  underlying
mortgage pool, are passed through  monthly to the holder of the  mortgage-backed
securities.

The  Limited  Duration  Government  Series must  reinvest  such  prepayments  at
prevailing  interest rates, which may be lower than those of the mortgage-backed
securities  prepaid.  Prepayment  will result in a reduction of principal if the
pre-paid  mortgage-backed  security is trading over par.  Principal  prepayments
generally increase in a falling interest-rate  environment,  as indicated above,
and  accordingly  often result in a reduction of  principal.  Among the types of
mortgage-backed  securities in which the Limited Duration  Government Series may
invest  are  collateralized  mortgage  obligations  ("CMOs"),   which  are  debt
obligations collateralized by mortgage loans or mortgage pass-through securities
guaranteed or issued by GNMA, FNMA, or FHLMC.  The Limited  Duration  Government
Series will not invest in privately  issued CMOs. The issuer of a series of CMOs
may  elect  to be  treated  as a Real  Estate  Mortgage  Investment  Conduit  (a
"REMIC").  In a CMO, a series of bonds or  certificates  are issued in  multiple
classes.  Each class, often referred to as a "tranche",  is issued at a specific
fixed or floating  coupon rate and has a stated  maturity or final  distribution
date.

Balanced  Series.  Fund  management  believes  that of all the various  kinds of
investments,  equity  securities  generally  afford  the  best  opportunity  for
investors'  capital  to grow and for their  income to  increase.  The  prices of
equity securities  fluctuate and the dividends earned on equity securities vary.
But if the companies they represent  prosper and grow,  equity securities should
appreciate in value and the income  distributed in the form of dividends  should
increase.

<PAGE>


However,  the market  risk is  generally  greater in equity  securities  than in
fixed-income securities. Therefore the Balanced Series at all times maintains at
least  25%  of its  net  assets  in  fixed-income  senior  securities,  such  as
high-grade bonds or notes and U.S. Government securities.  It also may invest in
lower grade preferred stocks or lower grade bonds, but for capital  appreciation
and income and not for capital stability.

The  Balanced   Series  changes  the  proportions  of  its  assets  invested  in
fixed-income  securities and in equity securities and the individual  securities
within  those  classifications  in response to market  conditions.  The Balanced
Series is guided by an investment  philosophy that identifies  undervalued areas
of the equity and  fixed-income  markets in an effort to generate  above-average
returns.  The equity investment  process  integrates the results of quantitative
and qualitative  valuation analysis with a macro-economic  outlook.  Fundamental
economic and  business  factors  taken into  consideration  include  government,
fiscal and monetary policies, employment levels, demographics,  retail sales and
market share when  determining  future earnings and market valuation for stocks.
In order to have maximum  flexibility  in  effectuating  this equity  investment
process,  we will invest in small,  middle-sized and/or large companies based on
their market  capitalization  (i.e., the market value of a company's outstanding
stock).  For the fixed-income  component,  a duration target between 3.5 and 7.5
years is  established  within the context of broad  economic  and  interest-rate
trends identified by Fund management. The fixed-income management strategies are
driven by the shape of the yield  curve,  yield  spread  analysis and effects on
value of time.

The  Balanced  Series  may  invest up to 10% of its net  assets  (at the time of
investment) in each of the following: (a) writing covered call options traded on
a national securities exchange for portfolio securities,  (b) foreign securities
and (c) lower rated,  high-yield bonds,  sometimes  referred to as "junk bonds".
These  foreign  securities  will be the kind  described  herein for the  Series'
domestic  investment.  It is the present intention of Fund management that these
securities be primarily traded in the United Kingdom, Western Europe, Australia,
Canada,  the Far East,  Latin America,  and other developed  countries as may be
determined from time to time.

        To create  reserve  purchasing  power and also for  temporary  defensive
purposes,  the  Balanced  Series may  invest in  high-quality,  short-term  debt
securities, such as those of banks, corporations and the U.S. Government.

The U.S.  Government  securities in which the Balanced Series may invest include
the same described above for the Limited Duration  Government Series except that
they will not be restricted to the same duration.

The Balanced Series may invest in shares of closed-end  investment  companies if
bought in the primary or secondary  market with a fee or  commission  no greater
than the customary broker's commission in compliance with the Investment Company
Act of 1940,  as  amended  (the  "Act").  Shares  of such  investment  companies
sometimes  trade at a discount  or premium in  relation to their net asset value
and there may be  duplication  of fees,  for  example,  to the  extent  that the
Balanced Series and the closed-end  investment  company both charge a management
fee.

Policies  Common  to All  Series.  Each  Series  may  purchase  U.S.  Government
securities on a when-issued basis and, while awaiting delivery and before paying
for them  ("settlement"),  normally  may invest in  short-term  U.S.  Government
securities without  amortizing any premiums.  Each Series does not start earning
interest on these  when-issued  securities  until settlement and often will sell
them prior to  settlement.  This  investment  strategy is expected to contribute
significantly to a portfolio  turnover rate  substantially in excess of 100% for
each Series,  including the fixed-income  portion of the Balanced  Series.  This
strategy will have little or no transaction cost or adverse tax consequences for
any series.  Transaction  costs  normally  will  exclude  brokerage  because our
fixed-income  portfolio transactions are usually on a principal basis when using
this strategy and

<PAGE>


any  mark-ups  charged  normally  will be more  than  offset  by the  beneficial
economic  consequences  anticipated  at the time of purchase.  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.

Each Series may engage in the lending of its portfolio  securities.  These loans
may not  exceed  30% of the  value  of each  Series'  total  assets.  In such an
arrangement  the  Series  loans  securities  from its  portfolio  to  registered
broker-dealers. Such loans are continuously collateralized by an amount at least
equal to 100% of the market value of the securities  loaned.  Cash collateral is
invested  in  obligations  (short  term  in the  case  of the  Limited  Duration
Government and Balanced  Series) issued or guaranteed by the U.S.  Government or
its  agencies,  commercial  paper or bond  obligations  rated AA or  A-1/P-1  by
Standard & Poor's Rating Services  ("S&P") or Moody's  Investors  Service,  Inc.
("Moody's"),   respectively,  or  repurchase  agreements  with  respect  to  the
foregoing.  As with  other  extensions  of  credit,  there are risks of delay in
recovery and market loss should the borrowers of the portfolio  securities  fail
financially.

Each Series may enter into repurchase  agreements with respect to a security.  A
repurchase  agreement is a transaction  by which the Series  acquires a security
and  simultaneously  commits to resell  that  security  to the seller (a bank or
securities  dealer)  at an  agreed  upon  price on an  agreed  upon  date.  Such
repurchase  agreement  must,  at all times,  be  collateralized  by cash or U.S.
Government securities having a value equal to, or in excess of, the value of the
repurchase agreement.

Each  Series  may  invest up to 15% of its net  assets in  illiquid  securities.
Securities  determined by the Trustees to be liquid  pursuant to Securities  and
Exchange  Commission  Rule 144A  ("Rule  144A") are not  subject to this  limit.
Investments  by a Series  in Rule 144A  securities  initially  determined  to be
liquid  could have the effect of  diminishing  the level of a Series'  liquidity
during periods of decreased market interest in such securities.  Under Rule 144A
a qualifying  security may be resold to a qualified  institutional buyer without
registration and without regard to whether the seller  originally  purchased the
security for investment.

No Series may borrow  money,  except  that (i) each Series may borrow from banks
(as  defined  in the  Act)  in  amounts  up to 331  1/43%  of its  total  assets
(including the amount borrowed), (ii) each Series may borrow up to an additional
5% of its total assets for temporary purposes,  and (iii) each Series may obtain
such  short-term  credit as may be necessary  for the clearance of purchases and
sales of portfolio securities.

Each  Series  will  not  change  its  investment  objective  or its  fundamental
investment  restrictions  listed  in its  Statement  of  Additional  Information
without its shareholders' approval. If Fund management determines that a Series'
objective  can best be achieved by a substantive  change in  investment  policy,
which may be changed without shareholder approval, it will make such a change by
disclosing it in its prospectus.

Risk Factors--Balanced Series

Foreign Investments.  Securities markets of foreign countries 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.  There may be less  publicly-available
information  on  publicly-traded  companies,  banks and  governments  in foreign
countries than is generally 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

<PAGE>


transaction  costs,  currency  fluctuations,  withholding  taxes that  cannot be
passed  through as a tax  credit or  deduction  to  shareholders  and  different
securities settlement  practices.  Foreign securities may be traded on days that
we do not value our portfolio securities, and, accordingly,  our net asset value
may be  significantly  affected on days when  shareholders do not have access to
the Balanced Series.

        High-Yield  Bonds.  The Balanced  Series may invest in lower rated bonds
for their higher  yields.  In general,  the market for lower rated bonds is more
limited  than that for higher  rated bonds and,  therefore,  may be less liquid;
market prices of such lower rated bonds may fluctuate  more than those of higher
rated bonds,  particularly in times of economic change and stress.  In addition,
because the market for lower rated  corporate debt  securities has in past years
experienced wide fluctuations in the values of certain of these securities, past
experience may not provide an accurate  indication of the future  performance of
that  market or of the  frequency  of  default,  especially  during  periods  of
recession.  Objective pricing data for lower rated bonds may be more limited and
valuation of such securities may be more difficult and require greater  reliance
upon judgment when compared to higher rated bonds.

While the market for lower rated bonds may be less  sensitive  to  interest-rate
changes than higher rated  bonds,  the market  prices of these lower rated bonds
structured as zero coupon or pay-in-kind securities may be affected to a greater
extent by such  interest-rate  changes and thus may be more volatile than prices
of lower rated securities periodically paying interest in cash. When compared to
higher rated bonds,  lower rated bonds that include redemption prior to maturity
or call  provisions  may be more  susceptible  to  refunding  during  periods of
falling interest rates, requiring replacement by lower yielding securities.

Since the risk of default  generally  is higher  among  lower rated  bonds,  the
research and analysis of Lord Abbett are  especially  important in the selection
of such bonds which, if rated BB/Ba or lower, are often described as "high-yield
bonds" because of their generally  higher yields and referred to as "junk bonds"
because  of  their  greater  risks.  In  selecting  lower  rated  bonds  for our
investment portfolio Lord Abbett does not rely upon ratings which, in any event,
evaluate only the safety of principal  and  interest,  not market value risk and
which,  furthermore,  may not accurately  reflect an issuer's current  financial
condition.  There is no minimum rating  criteria for  investments in these bonds
and some may default as to principal  and/or  interest  payments  subsequent  to
their purchase. Through portfolio diversification, credit analysis and attention
to current  developments  and trends in interest rates and economic  conditions,
investment risk can be reduced,  although there is no assurance that losses will
not occur.

Small Capitalized Companies.  These generally consist of companies in either the
formative or developing growth phase of business growth. The formative phase has
high risk.  The perils of infancy take a high toll during these years.  Skill of
management  and growth of revenues and earnings  permit some of these  formative
companies to survive and advance into the growth stage.  The  developing  growth
phase is a period of swift  development,  when  growth  occurs at a rate  rarely
equalled by established  companies in their mature years. Of course,  the actual
growth of a company cannot be foreseen,  and it can be difficult to determine in
which phase a company is presently  situated.  Small  capitalized  companies are
usually young and their shares are generally traded over-the-counter.

Portfolio  Turnover.  The  portfolio  turnover  rate  for the  Limited  Duration
Government  Series for the year ended October 31, 1995 was 222.00%,  compared to
895.63% for the previous  year,  primarily  due to security  purchases and sales
relating  to  purchases  and  redemptions  of Series  shares and some  portfolio
restructuring.  The  portfolio  turnover  rate for the  Balanced  Series for the
period  December 27, 1994 through  October 31, 1995 was 131.80%.  The  portfolio
turnover rate for the predecessor fund to the U.S. Government  Securities Series
was 544.31%  for that  fund's  fiscal year ended  November  30,  1995.  The high
portfolio  turnover rate relates to substantial  trading of U.S. and U.S. agency
mortgage-backed  securities to take  advantage of value changes among  different
agencies, coupons and maturities.


5    PURCHASES

GENERAL
How  Much  Must You  Invest?  You may buy our  shares  through  any  independent
securities  dealer having a sales  agreement  with Lord Abbett  Distributor  LLC
("Lord Abbett Distributor"),  our exclusive selling agent. Place your order with
your investment dealer or send it to Lord Abbett Investment

<PAGE>


Trust (P.O.  Box 419100,  Kansas  City,  Missouri  64141).  The minimum  initial
investment is $1,000 except for  Invest-A-Matic  and Div-Move  ($250 initial and
$50  subsequent  minimum)  and  Retirement  Plans  ($250  minimum).   Subsequent
investments  may be  made  in any  amount.  (See  "Shareholder  Services".)  For
information  regarding the proper form of a purchase or redemption  order,  call
the Fund at 800-821-5129.  This offering may be suspended, changed or withdrawn.
Lord Abbett 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 our net assets by the
number of shares  outstanding.  Securities  are  valued at market  value as more
fully described in the Statement of Additional Information.

Buying Shares Through Your Dealer.  Orders for shares received by the Fund prior
to the  close of the  NYSE,  or  received  by  dealers  prior to such  close and
received  by Lord  Abbett  Distributor  in proper form 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 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  may,  for  specified
periods,  allow  dealers  to retain  the full  sales  charge for sales of shares
during such period,  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,  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.

Alternative Sales Arrangements.
Each  Series of the Fund  offer  investors  different  classes  of  shares.  The
different  classes  of  shares  in a Series  represent  investments  in the same
portfolio of securities but are subject to different expenses and will be likely
to have different share prices.

U.S. Government  Securities Series. The U.S. Government Securities Series offers
Class A, Class B and Class C shares.  Investors considering an investment in the
U.S.  Government  Securities  Series  should  pay  particular  attention  to the
sections below headed "Investment in a Multi-Class Series",

"Buying Class A Shares", "Buying Class B Shares" and "Buying Class C Shares".

Limited Duration Government and Balanced Series. The Limited Duration Government
and Balanced Series offer Class A and Class C shares.  Investors  considering an
investment  in the Limited  Duration  Government  or Balanced  Series should pay
particular attention to the sections below headed

"Investment in a Multi-Class Series",  "Buying Class A Shares" and "Buying Class
C Shares". Investment in a Multi-Class Series.

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 of the Limited Duration  Government or
Balanced Series,  you will pay an initial sales charge on all investments  until
such time as the Rule 12b-1 Plan for such  Series goes into  effect.  If you buy
Class A shares of the U.S.  Government  Securities  Series,  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).  If
you purchase Class A shares of

<PAGE>


the U.S.  Government  Securities  Series as part of an investment of at least $1
million (or for Retirement Plans with at least 100 eligible employees) 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%. Class A shares of the U.S.  Government  Securities Series
are subject to service and  distribution  fees that are  currently  estimated to
total  annually  approximately  0.27 of 1% of the annual net asset  value of the
Class A shares of such Series.  The initial sales charge rates, the CDSC and the
Rule 12b-1 Plan  applicable to the Class A shares are described in "Buying Class
A Shares" below.

Class B Shares. If you buy Class B shares (offered by U.S. Government Securities
Series only), 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.  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 in "Buying Class
B Shares" 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 in "Buying Class C Shares" below.

Which  Class of Shares  Should You  Choose?  Once you decide that a 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 financial adviser. 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 financial adviser with
a framework in which to choose a class,  we have made some  assumptions  using a
hypothetical  investment.  We used the sales charge rates that apply to Class A,
Class B and Class C, and considered the effect of the higher distribution fee 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.

<PAGE>


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 amounts you redeem after holding them 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 might be more
appropriate  than Class C 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. Although we believe you ought to have a long-term  investment  horizon,
if you are investing $500,000 or more, Class A may become more desirable as your
investment horizon approaches 3 years or more.

For most investors who invest $1 million or more or for Retirement Plans with at
least 100  eligible  employees,  in most cases  Class A shares  will be the most
advantageous choice, no matter how long you intend to hold your shares. For that
reason, Lord Abbett Distributor normally will not accept purchase orders (i) for
Class B shares of $500,000 or more and for Class C shares of  $1,000,000 or more
from a single  investor or (ii) for Retirement  Plans with at least 100 eligible
employees.

Investing  for the Longer  Term.  If you are  investing  in the U.S.  Government
Securities Series for the longer term (for example,  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 Fund's 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.

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 withdrawals  over 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. 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 Fund 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 Fund and Class C shareholders.

Buying Class A Shares (ALL  SERIES).  For each Series the offering  price of the
Class A shares is based on the  per-share  net asset value next  computed  after
your order is received, plus a sales charge as follows.

<TABLE>
<CAPTION>

LIMITED DURATION GOVERNMENT SERIES

                              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
        <S>                    <C>          <C>            <C>          <C>
        Less than $100,000      3.00%        3.09%          2.50%          .9700
        $100,000 to $249,999    2.50%        2.56%          2.25%          .9750
        $250,000 to $499,999    2.00%        2.04%          1.75%          .9800
        $500,000 to $999,999    1.50%        1.52%          1.25%          .9850
The following categories over $1 million apply only until the Series' Rule 12b-1
Plan becomes  effective,  at which time no sales charge will apply to sales over
$1 million or for Retirement Plans with at least 100 eligible  employees and the
authorized  institutions  will  receive  concessions  on such  net  asset  value
purchases mentioned below in the note designated with a "+".
$1,000,000 to $2,999,999        1.00%        1.01%          1.00%          .9900
$3,000,000 to $9,999,999         .50%        .50%            .50%          .9950
$10,000,000 or more              .25%        .25%            .25%          .9975
</TABLE>

<TABLE>
<CAPTION>

BALANCED SERIES
                              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

        <S>                    <C>          <C>            <C>          <C>
        Less than $50,000       4.75%        4.99%          4.00%          .9525
        $50,000 to $99,999      4.75%        4.99%          4.25%          .9525
        $100,000 to $249,999    3.75%        3.90%          3.25%          .9625
        $250,000 to $499,999    2.75%        2.83%          2.50%          .9725
        $500,000 to $999,999    2.00%        2.04%          1.75%          .9800
        $1,000,000 or more       No Sales Charge            1.00%+         .9900

+Authorized  institutions  receive concessions on purchases made by a $1 million
or more  purchaser  or a Retirement  Plan with at least 100  eligible  employees
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. </TABLE>

<TABLE>
<CAPTION>

U.S. GOVERNMENT SECURITIES SERIES
                              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
        <S>                   <C>          <C>            <C>          <C>
        Less than $50,000       4.75%        4.99%          4.00%          .9525
        $50,000 to $99,999      4.75%        4.99%          4.25%          .9525
        $100,000 to $249,999    3.75%        3.90%          3.25%          .9625
        $250,000 to $499,999    2.75%        2.83%          2.50%          .9725
        $500,000 to $999,999    2.00%        2.04%          1.75%          .9800

The following category over $1 million applies only until the Series' Rule 12b-1
Plan becomes  effective,  at which time no sales charge will apply to sales over
$1 million or for  Retirement  Plans with at least 100  eligible  employees  and
authorized  institutions  will  receive  concessions  on such  net  asset  value
purchases mentioned above in the note designated with a "+".
        $1,000,000 or more      1.00%        1.01%          1.00%          .9900

</TABLE>

Class A Share Volume  Discounts.  This section describes several ways to qualify
for a lower sales charge if you inform Lord Abbett  Distributor or the Fund that
you are eligible at the time of purchase. (1) Any purchaser (as described below)
may aggregate a Class A share  purchase in the Fund with  purchases of any other
eligible Lord Abbett-sponsored  fund, together with the current value at maximum
offering   price  of  any  shares  in  the  Fund  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"), the other series of the Lord Abbett
Research Fund if not offered to the general public ("LARF") and Lord Abbett U.S.
Government Securities Money Market Fund ("GSMMF"),  except for existing holdings
in GSMMF which are attributable to shares exchanged from a Lord Abbett-sponsored
fund.) (2) A purchaser may sign a non-binding 13-month statement of intention to
invest  $100,000  or  more in any  shares  of the  Fund  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 shares  purchase  will be at the sales  charge for the
aggregate of the actual 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.

<PAGE>


Class A Share Net Asset  Value  Purchase.  Each  Series'  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  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 from 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,  (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 funds (f) through Retirement Plans with at least 100 eligible
employees  and (g) subject to  appropriate  documentation,  through a securities
dealer where the amount  invested  represents  redemption  proceeds  from shares
("Redeemed Shares") of a registered  open-end management  investment company not
distributed or managed by Lord Abbett (other than a money market fund),  if such
redemptions  have  occurred  no more than 60 days prior to the  purchase  of our
shares,  the  Redeemed  Shares  were  held  for at  least  six  months  prior to
redemption  and the proceeds of  redemption  were  maintained in cash or a money
market fund prior to purchase. Purchasers should consider the impact, if any, of
contingent  deferred sales charges in  determining  whether to redeem shares for
subsequent  investment  in our  Class A  shares.  Lord  Abbett  may  suspend  or
terminate the purchase  option referred to in (g) above at any time. Our Class A
shares may be issued at net asset value in exchange  for the assets,  subject to
possible tax adjustment, of a personal holding company or an investment company.

Class A Rule  12b-1  Plans.  The Fund has  adopted a Class A Rule  12b-1 Plan on
behalf of each Series (the "A" Plans,  each an "A Plan")  which  authorizes  the
payment  of fees to  authorized  institutions  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  applicable  Series and (b) to sell Class A
shares of the applicable Series. The A Plan for the U.S.  Government  Securities
Series is operative. For the Limited Duration

<PAGE>


and Balanced  Series the A Plan is not operative.  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 a Series' 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 for the U.S.  Government  Securities  Series,  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 except that the service fee may not exceed 0.15 of 1% in
the case of shares sold or  attributable  to shares sold prior to  September  1,
1985 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.  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  satisfactory
program for the promotion of such shares comprising a significant  percentage of
the Class A assets, with a lower than average redemption rate.  Institutions and
persons permitted by law to receive such fees are "authorized institutions".

The Board has approved  similar fee  payments  under the A Plans for the Limited
Duration and  Balanced  Series  (except  that there is no lower  service fee for
shares sold prior to  September  1, 1985),  which fees will begin to be charged,
for each Series, following the operative date for such Series' A Plan.

Under the A Plans, 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 a distribution  fee has been paid to a Series
may be required to pay to such Series 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 any fund in the Lord Abbett  family having an exchange
privilege with each Series on or before the end of the twenty-fourth month after
the month in which the purchase occurred.  (An exception is made for redemptions
by  Retirement  Plans  due to  benefit  payments  such as plan  loans,  hardship
withdrawals,  death,  retirement or separation from service with respect to plan
participants or the  distribution of any excess  contributions.)  If the Class A
shares have been exchanged into another fund or series in the Lord Abbett family
of funds 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 or series. Each Series will collect
such a charge  for  other  Lord  Abbett-sponsored  funds or  series in a similar
situation.

Buying Class B Shares (U.S.  Government  Securities Series Only). 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 CDSC is not 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). The

<PAGE>


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 U.S.  Government
Securities  Series  redeems  Class B 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 same will be true if Class B shares of another  Lord  Abbett-sponsored  fund
are exchanged  into U.S.  Government  Securities  Series Class B shares that are
subsequently  redeemed  for cash before the sixth  anniversary  of the  original
purchase.

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,  and (iii) in connection with mandatory  distributions
under 403(b) plans and individual retirement accounts.

Class B Rule 12b-1  Plan.  The Fund has  adopted a Class B share Rule 12b-1 Plan
(the "B Plan") for the Class B shares of the U.S.  Government  Securities Series
under which the U.S. Government  Securities 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 8 years.

Lord  Abbett   Distributor  uses  the  service  fee  to  compensate   authorized
institutions  for  providing  personal  services for accounts  that hold Class B
shares.  Those  services are  primarily  similar to those  provided  under the A
Plans, described above.

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.


<PAGE>


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 Fund of part of 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 which are made to Lord Abbett Distributor by
shareholders who redeem their Class B shares within six years of their purchase.

The  distribution  fee and the CDSC payments  described above allow investors in
the U.S. Government  Securities Series 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 Fund 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
Directors 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  undertakes  not 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 of the U.S. Government  Securities Series. This conversion relieves Class
B  shareholders  of the higher annual  distribution  fee that applies to Class B
shares  under  the  Class B Rule  12b-1  Plan.  The  conversion  is based on the
relative net asset value 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 a private  letter  ruling from the Internal  Revenue
Service or an  opinion  of counsel  described  in  "Purchases,  Redemptions  and
Shareholder Services" in the Statement of Additional Information.

Buying Class C Shares (ALL  SERIES).  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 1.0%
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 CDSC
is not imposed on the

<PAGE>


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).  The Class C CDSC is paid to the
Series to reimburse  it, in whole or in part,  for the service and  distribution
fee payment  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  redeem  shares in the  following  order:  (1) shares
acquired by  reinvestment  of dividends  and 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 of a Series are exchanged into the same class
of  another  Series  or  another  Lord  Abbett-sponsored  fund and  subsequently
redeemed  before the first  anniversary of their original  purchase,  the charge
will be collected by the other series or fund on behalf of such Series'  Class C
shares.  Each Series will collect such a charge for other Lord  Abbett-sponsored
funds in a similar situation.

Class C Rule 12b-1 Plan. The Fund has adopted a Class C share Rule 12b-1 Plan on
behalf of each Series (the "C Plans") under which (except as to certain accounts
for  which  tracking  data  is  not  available)   each  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.  Lord Abbett  Distributor  may
retain from the  quarterly  distribution  fee,  for the payment of  distribution
expenses  incurred  directly by it, an amount not to exceed 0.10% of the average
annual net asset value of such shares outstanding.

6    SHAREHOLDER SERVICES

We offer the following shareholder services:
Telephone Exchange Privilege: Shares may be exchanged, without a service charge:
(a) for those of any other Lord  Abbett-sponsored fund except for (i) LAEF, LARF
and LASF 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 Fund to
exchange  uncertificated  shares  (held by the  transfer  agent)  by  telephone.
Shareholders have this privilege unless they refuse it in writing. The Fund 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 Fund in Kansas  City  (800-821-5129)  prior to the close of the
NYSE to obtain  each  fund's  net asset  value per share on that day.  Expedited
exchanges  by  telephone  may be  difficult  to  implement  in times of  drastic
economic or market change.  The ex-change  privilege  should not be used to take
advantage of  short-term  swings in the market.  The Fund  reserves the right to
terminate  or  limit  the  privilege  of  any  shareholder  who  makes  frequent
exchanges.  The Fund 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  either  the
current  net  asset  value of your  account  or your  original  purchase  price,
whichever  is  higher.  For  Class B shares  (over  12% per  year) and C shares,
redemption proceeds due to a SWP will

<PAGE>


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).  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.

Div-Move: You can invest the dividends paid on your account ($50 monthly minimum
investment)  into an existing  account 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.  Such  dividends  are not  subject  to a CDSC.  You  should  read the
prospectus of the other fund before investing.

Invest-A-Matic:   You  can  make  fixed,   periodic   investments  ($50  minimum
investment)  into the Fund 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 forms and
custodial   agreements  for  IRAs  (Individual   Retirement  Accounts  including
Simplified  Employee  Pensions),  403(b)  plans and pension  and  profit-sharing
plans, including 401(k) plans.

Householding:  A single copy of an annual or semi-annual  report will be sent to
an address to which more than one  registered  shareholder  of the Fund with the
same last name has indicated mail is to be delivered,  unless additional reports
are specifically requested in writing or by telephone.

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

7    OUR MANAGEMENT

Our business is managed by our officers on a day-to-day  basis under the overall
direction  of our  Board  of  Trustees.  Each  Series  employs  Lord  Abbett  as
investment manager pursuant to a Management  Agreement.  Lord Abbett has been an
investment  manager for over 65 years and currently  manages  approximately  $19
billion in mutual funds and advisory accounts.  Under the Management Agreements,
Lord Abbett provides us with investment management services and personnel,  pays
the  remuneration  of our  officers  and of our  trustees  affiliated  with Lord
Abbett, provides us with office space and pays for ordinary and necessary office
and clerical expenses relating to research,  statistical work and supervision of
our portfolios and certain other costs. Lord Abbett provides similar services to
twelve other Lord  Abbett-sponsored  funds having various investment  objectives
and also advises other investment clients. Zane E. Brown, Lord Abbett's Director
of Fixed Income, is primarily  responsible for the day-to-day  management of the
U.S.  Government  Securities Series,  Limited Duration Government Series and the
fixed-income portion of the Balanced Series. Prior to joining

Lord Abbett in 1992,  Mr. Brown was Executive  Vice President in charge of fixed
income at Equitable Capital  Management Co. Robert S. Dow,  chairman,  president
and  director  (trustee)  of each fund in the Lord Abbett  family of funds and a
Lord Abbett  partner  for over five years,  was  primarily  responsible  for the
day-to-day  management of the fixed-income  portion of the Balanced Series since
its inception,  before Mr. Brown. Mr. Brown is assisted by (as was Mr. Dow), and
may delegate  management  duties to, other Lord Abbett employees who may be Fund
officers. E. Wayne Nordberg, a Lord Abbett partner for over five years, has been
primarily  responsible  for the  day-to-day  management  of the equity  security
portion of the Balanced Series since its inception. Mr. Nordberg is assisted by,
and  may  delegate  duties  to,  other  Lord  Abbett  employees  who may be Fund
officers.

Under each Management  Agreement,  we are obligated to pay Lord Abbett a monthly
fee based on average  daily net assets for each month at the annual  rate of (i)
 .45 of 1% (in the case of the U.S. Government Securities Series), (ii) .50 of 1%
(in the case of the Limited Duration  Government Series) and (iii) .75 of 1% (in
the case of the Balanced Series). This last fee is higher than that paid by most
investment  companies.  For the fiscal  year ended  October 31, 1995 Lord Abbett
waived $26,725 in management fees for the Limited  Duration  Government  Series.
The Class A share ratio

<PAGE>


of expenses,  including  management fee expenses,  to average net assets for the
year ended  October  31,  1995 for the Limited  Duration  Government  Series was
1.40%.  This Class A share  expense  ratio would have been 1.71% had Lord Abbett
not waived all or a portion of its management  fee. For the period  December 27,
1994 to October 31, 1995 Lord Abbett waived  $23,330 in management  fees for the
Balanced  Series.  The Class A share ratio of expenses to average net assets for
the same period was .31% (not annualized) for the Balanced  Series.  Lord Abbett
waived  management  fees and  subsidized  expenses  with respect to the Balanced
Series.  Without such waiver and subsidy the Class A share  expense  ratio would
have been 1.07% (not annualized).

The Management  Agreement for each of the Limited Duration Government Series and
the  Balanced  Series  provides  for the  Series to repay  Lord  Abbett  without
interest for any  expenses  assumed by Lord Abbett on and after the first day of
the  calendar  quarter  after the net assets of each such Series first reach $50
million  ("commencement  date"),  to the extent that the  expense  ratio of such
Series  (determined  before  taking  into  account  any fee  waiver  or  expense
assumption)  is less than 1.15% (in the case of the  Balanced  Series)  and less
than .75% (in the case of the Limited Duration Government  Series).  Thereafter,
such  repayment of Lord Abbett by the Limited  Duration  Government  Series will
continue on and after the first day of the calendar quarter after the net assets
of that Series first reach $100  million to the extent that the Series'  expense
ratio so  determined  is less than .95%.  Each Series  shall not be obligated to
repay any such expenses after the earlier of the termination of its Agreement or
the end of five full fiscal years after the  commencement  date. The Series will
not record as obligations in their  financial  statements any expenses which may
possibly be repaid to Lord Abbett under this  repayment  formula,  but each will
disclose in a note to its financials  that such expenses are possible.  However,
if such expenses  become  probable,  they will be recorded as obligations of the
Series at that time.

We will not hold annual  meetings  and expect to hold  meetings of  shareholders
only when necessary under applicable law or the terms of the Fund's  Declaration
of Trust.  Under the Declaration,  a shareholders'  meeting may be called at the
request of the holders of  one-quarter  of the  outstanding  shares  entitled to
vote. See the Statement of Additional Information for more details.

The Fund.  The Fund is a  diversified  open-end  management  investment  company
organized as a Delaware  business trust on August 16, 1993. Its Class A, B and C
shares have equal rights as to voting, dividends,  assets and liquidation except
for differences resulting from certain class-specific expenses.

8    DIVIDENDS, CAPITAL GAINS DISTRIBUTIONS AND TAXES

With respect to each Series,  dividends from net investment  income are declared
daily (Limited Duration and U.S.  Government  Securities) or monthly  (Balanced)
and paid on the 15th of each month, or if the 15th is not a business day, on the
first business day after the 15th. Dividends for all Series may be taken in cash
or reinvested in additional shares at net asset value without a sales charge. If
you elect a cash  payment  (i) a check will be mailed to you as soon as possible
after the monthly  reinvestment  date or (ii) if you arrange for direct deposit,
your  payment will be wired  directly to your bank account  within one day after
the payable  date.  You begin  earning  dividends  on the  business day on which
payment for the purchase of your shares is received.

A long-term  capital gains  distribution is made when we have net profits during
the year from sales of  securities  which we have held more than one year. If we
realize net short-term capital gains, they also will be distributed. Any capital
gains  distribution  will  be made in  December  and you may  take it in cash or
additional shares without a sales charge.
Supplemental  dividends  also may be paid in December or January.  Dividends and
distributions  declared  in  October,  November  or  December  of  any  year  to
shareholders of record as of a date in such

<PAGE>


a month will be treated for federal  income tax purposes as having been received
by shareholders in that year if they are paid before February 1 of the following
year.

We intend to continue to meet the  requirements  of Subchapter M of the Internal
Revenue Code. We will try to distribute to  shareholders  all our net investment
income and net realized capital gains,
so  as  to  avoid  the  necessity  of  the  Fund  paying   federal  income  tax.
Distributions  derived from net long-term  capital gains which are designated by
the Fund as  "capital  gains  dividends"  will be  taxable  to  shareholders  as
long-term capital gains,  whether received in cash or shares,  regardless of how
long a taxpayer has held the shares.  Under current law, net  long-term  capital
gains are taxed at the rates  applicable  to  ordinary  income,  except that the
maximum rate for long-term capital gains for individuals is 28%.  Legislation is
pending  in  Congress  as of the date of this  Prospectus  which  would have the
effect of reducing the federal income tax rate on capital gains.

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  proceeds  (including the value of shares  exchanged into another
Lord Abbett-sponsored  fund), and of any dividend or distribution on any account
where the payee failed to provide a correct taxpayer identification number or to
make certain required certifications.

We will  inform  shareholders  of the federal  tax status of each  dividend  and
distribution  shortly  after  year-end.  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,  repurchase or exchange of
our shares.

9    REDEMPTIONS

To obtain the proceeds of an  expedited  redemption  of $50,000 or less,  you or
your representative with proper  identification can telephone the Fund. The Fund
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,  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 Lord Abbett  Investment  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  business
days.  The Fund may suspend  the right to redeem  shares for not more than three
days (or longer under unusual circumstances as permitted by Federal law). If you
have  purchased  Fund  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 Fund that the check has cleared.
Shares  also  may be  redeemed  by the  Fund 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

<PAGE>


of the Eligible  Funds,  at the then  applicable net asset value (i) without the
payment of a front-end 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 amount of the redemption proceeds.

Under certain  circumstances  and subject to prior written notice,  our Trustees
may authorize  redemption of all of the shares in any account in which there are
fewer than 50 shares.

Tax-qualified   Plans:  For  redemptions  of  $50,000  or  less,  follow  normal
redemption  procedures.  Redemptions  over  $50,000 must be received by the Fund
prior to, or concurrent with, the redemption request.


10   PERFORMANCE

Lord Abbett  Investment  Trust completed  fiscal 1995 on October 31. The Limited
Duration  Government  Series  closed  the  fiscal  year with net  assets of $8.9
million. The Series' distribution rate was 5.83% based on the net asset value of
$4.53 and the per-share monthly dividend of $.022, annualized.  Total return for
the year was 8.16%.

The Balanced Series ended its  abbreviated  fiscal year on October 31, 1995 (the
Series  commenced  operations  on  December  27,  1994)  with net assets of $5.7
million.  The  Series'  distribution  rate was 4.71% based on the October 31 net
asset value of $10.71 (this rate is based on the monthly dividend rate of $.042,
annualized). The Series posted a total return of 16.32% since inception.

The past twelve  months have been marked by a return of investor  confidence  in
the  U.S.  equity  and  fixed-income  markets,  as the  success  of the  Federal
Reserve's  preemptive strike against an overheating economy and rising inflation
became  increasingly  visible.  The first signs of the economic slowdown came in
the form of weaker auto sales, a significant  slowdown in the housing market and
rising  inventories in the manufacturing  sector. The yield on 3-year and 5-year
U.S. Treasury notes fell approximately 2% during the first three quarters of the
year.

The Limited Duration  Government  Series was positioned  "duration  neutral" for
most of fiscal year 1995. The  fixed-income  portion of the Balanced  Series was
adjusted  several  times during the fiscal year  anticipating  the  direction of
interest  rates.  The equity portion of the Balanced  Series was adjusted during
the  fiscal  year,  by  increasing  our  holdings  in  less  cyclical,  consumer
non-durable goods.

On July 12, 1996, the Fund acquired Lord Abbett U.S. Government Securities Fund,
Inc.  (the  "Acquired  Fund")  in  exchange  for  Class A shares  of the  Fund's
newly-created  U.S.  Government  Securities  Series.  The  following  discussion
relates to the Acquired Fund, and all performance  data contained herein for the
Class A shares of that series  reflects the performance of the Acquired Fund for
the periods  shown.  The Acquired Fund ended fiscal 1995 on November 30 with net
assets of $3.3 billion versus $3.0 billion one year earlier. The Acquired Fund's
total return (the percent change in net asset value assuming the reinvestment of
all distributions) was 14.9% for the fiscal year.

Despite  the  U.S.  economy's  expansion  over the last  five  years,  inflation
remained at a steady  level.  Several  factors  helped keep  inflation in check.
Labor cost increases,  the largest component in the inflation pricing mechanism,
have been moderate as  corporations  downsized and used more  efficient  capital
equipment.  Additionally,  consumers  resisted price increases,  thereby forcing
companies to hold down prices.

The Fund benefited from a favorable  inflation and interest-rate  environment in
fiscal  1995.  The Fund  continued  to  invest in  mortgage-related  securities,
because they offered  additional yield over other  fixed-income  securities.  In
particular, low prepayment securities were emphasized to reduce the reinvestment
risk.

Prior to July 12, 1996, each of the Limited Duration  Government  Series and the
Balanced  Series had only one class of  shares,  which  class is now  designated
Class A.  Performance  data contained in this  prospectus  with respect to those
Series pertains to those shares only.

Yield and Total  Return.  Yield and total return data may, from time to time, be
included in  advertisements  about each Series.  Each class of shares calculates
its yield by dividing the annualized  net  investment  income per share during a
recent 30-day period by the maximum public  offering price per share on the last
day of that period. The yield of each class will differ because of the different
expenses  (including actual 12b-1 fees) of each class of shares.  The yield data
represents  a  hypothetical  investment  return on the  portfolio,  and does not
measure an investment return based

<PAGE>


on dividends  actually  paid to  shareholders.  To show that return,  a dividend
distribution rate may be calculated. Dividend distribution rate is calculated by
dividing the  dividends of a class derived from net  investment  income during a
stated  period  by the  maximum  offering  price on the last day of the  period.
Yields and dividend  distribution  rate for Class A shares reflect the deduction
of the maximum  initial sales charge,  but may also be shown based on the Fund's
net asset value per share.  Yields for Class B and Class C shares do not reflect
the deduction of the CDSC.

"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 a 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
investment at reduced  sales charge levels or net asset value.  Any quotation of
total return not  reflecting  the maximum sales charge  (front-end,  back-end or
level) would be reduced if such sales charge were used.  Quotations  of yield or
total  return for any period  when an expense  limitation  is in effect  will be
greater than if the limitation had not been in effect.

Our Series'  distribution  rates  differ from our yields  primarily  because the
Series may purchase  short- and  intermediate-term  high-coupon  securities at a
premium  and,   consistent  with  applicable  tax  regulations,   distribute  to
shareholders all of the interest income on these securities  without  amortizing
the premiums. This practice also is used by these Series for financial statement
purposes and is in accordance with generally accepted accounting principles.  In
other words,  these Series may pay more than face value for a security that pays
a greater-than-market  rate of interest and then distribute all such interest as
dividends.  The  principal  payable on the security at maturity  will equal face
value,  and so the market value of the security will gradually  decrease to face
value,  assuming  no  changes in the market  rate of  interest  or in the credit
quality of the issuer.  Shareholders  should  recognize that such dividends will
therefore  tend to decrease the net asset value of these Series.  Dividends paid
from this interest income are taxable to shareholders at ordinary income rates.

This  Prospectus  does not constitute an 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 information or to make any  representations  not
contained in this  Prospectus or in  supplemental  literature  authorized by the
Fund, and no person is entitled to rely upon any  information or  representation
not contained herein or therein.

<PAGE>


Comparison of change in value of a $10,000  investment in Class A shares of U.S.
Government   Securities  Series  (formerly  the  Lord  Abbett  U.S.   Government
Securities  Fund),  assuming  reinvestment  of all dividends and  distributions,
Lipper's Average of General U.S. Government bond funds and the Lehman Government
Bond Index.


<TABLE>
<CAPTION>

          THE FUND       THE FUND       LIPPER'S AVG        LEHMAN
          AT NET         AT MAXIMUM     OF GENERAL          GOVERNMENT
          ASSET          OFFERING       U.S. GOV'T          BOND
DATE      VALUE          PRICE          BOND FUNDS          FUNDS
<S>      <C>           <C>            <C>                 <C>
11/30/85  10000           9526          10000               10000
11/30/86  11801          11243          11499               11859
11/30/87  11843          11282          11483               11999
11/30/88  12984          12396          12408               12946
11/30/89  14496          13810          13900               14819
11/30/90  15630          14891          14863               15893
11/30/91  17874          17028          16748               17997
11/30/92  19526          18602          18113               19625
11/30/93  21615          20591          20035               21997
11/30/94  20697          19718          19047               21208
11/30/95  23779          22654          22207               24897

</TABLE>

Comparison  of  change  in value of a  $10,000  investment  in Class A shares of
Limited Duration Government Series, Lipper's Average Short and Intermediate U.S.
Government Funds and the Lehman Intermediate Government Index.

<TABLE>
<CAPTION>

               The Series        The Series        Lippers Average          Lippers Average     Lehman
                at Net           at Maximum        Intermediate U.S.        Short U.S.          Intermediate
Date           Asset Value      Offering Price     Government Funds         Government Funds    Gov't Index
<S>          <C>                 <C>                  <C>                     <C>                 <C>
11/4/93       $10000              $9700               $10000                   $10000              $10000
10/31/94        9691               9400                9575                     9873                9799
10/31/95       10482               10168               10733                    10659               11165
</TABLE>


Comparison  of  change  in value of a  $10,000  investment  in Class A shares of
Balanced Series and the Merrill Lynch Wilshire Capital Market Index.

<TABLE>
<CAPTION>

               The Series        The Series        Merrill Lynch
                at Net           at Maximum        Wilshire Capital
Date           Asset Value      Offering Price     Markets Index
<S>          <C>                 <C>                  <C>
12/27/94      $10000              $9525               $10000
10/31/95       11632               11080               12248

<FN>
</TABLE>


(1)Data reflects the deduction of the maximum sales charge as follows: 4.75% for
the U.S. Government  Securities Series and the Balanced Series and 3.00% for the
Limited Duration Government Series.
(2)Source: Lipper Analytical Services.
(3)Performance  numbers for the unmanaged Lehman Intermediate  Government Index,
Lehman  Government Bond Index and Merrill Lynch Wilshire Capital Market Index do
not reflect  transaction  costs or management  fees.  An investor  cannot invest
directly in these Indices.
(4)Total  return is the percent change in value,  after deduction of the maximum
sales  charge of 3.00%,  applicable  to Class A shares of the  Limited  Duration
Government  Series and 4.75%,  applicable  to Class A shares of the Balanced and
U.S.  Government   Securities  Series,  with  all  dividends  and  distributions
reinvested  for the periods shown ending  October 31, 1995,  with respect to the
Balanced and Limited  Duration  Government  Series and  November 30, 1995,  with
respect to the U.S. Government  Securities Series using the SEC-required uniform
method to compute such return.

<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
<PAGE>
LORD ABBETT



Statement of Additional Information                          July 15, 1996

                          Lord Abbett Investment Trust
                        U.S. Government Securities Series
               Limited Duration U. S. Government Securities Series
                                 Balanced Series



This Statement of Additional  Information is not a Prospectus.  A Prospectus may
be  obtained  from  your  securities  dealer or from  Lord,  Abbett & Co. 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 July 15, 1996.

Lord Abbett  Investment  Trust  (referred  to as the "Fund") was  organized as a
Delaware  business trust on August 16, 1993. The Fund's  trustees have authority
to create separate classes and series of shares of beneficial interest,  without
further action by shareholders.  To date, the Fund has three series--Lord Abbett
U.S. Government  Securities Series, Lord Abbett Limited Duration U.S. Government
Securities  Series and Lord Abbett  Balanced  Series  (sometimes  referred to as
"U.S.  Government  Securities Series",  "Limited Duration Government Series" and
"Balanced  Series",  respectively,  or "we"  or the  "Series",  individually  or
collectively).  The U.S.  Government  Securities  Series offers three classes of
shares: Class A, Class B and Class C. The Limited Duration Government Series and
the Balanced  Series offer two classes of shares:  Class A and Class C. Prior to
July 12,  1996,  each  Series had only one class of shares,  which  class is now
designated  Class A. The Class B shares  will be  offered  to the public for the
first time on or about  August 1,  1996.  All  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.  Further
classes or series may be added in the  future.  The  Investment  Company  Act of
1940,  as amended (the "Act")  requires that where more than one class or series
exists,  each class or series must be preferred over all other classes or series
in respect of assets specifically allocated to such class or series.

Rule 18f-2 under the Act provides that any matter  required to be submitted,  by
the provisions of the Act or applicable  state law or otherwise,  to the holders
of the outstanding  voting securities of an investment  company such as 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 Objective and Policies                         2
2.      Trustees and Officers                                     5
3.      Investment Advisory and Other Services                    7
4.      Portfolio Transactions                                    8
5.      Purchases, Redemptionsand Shareholder Services            9
6.      Performance                                               15
7.      Taxes                                                     17
8.      Information About the Fund                                17
9.      Financial Statements                                      18


<PAGE>
                                       1.
                        Investment Objective and Policies

Fundamental Investment Restrictions
- -----------------------------------
Each Series may not:  (1) borrow  money,  except that (i) each Series may borrow
from banks (as defined in the  Investment  Company Act of 1940,  as amended (the
"Act"))  in  amounts  up to 33 1/3% of its total  assets  (including  the amount
borrowed),  (ii) each  Series  may  borrow up to an  additional  5% of its total
assets for  temporary  purposes,  (iii) each Series may obtain  such  short-term
credit as may be necessary for the clearance of purchases and sales of portfolio
securities and (iv) each 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'  investment  policies as
permitted by applicable  law);  (3) engage in the  underwriting  of  securities,
except  pursuant to a merger or acquisition or to the extent that, in connection
with the  disposition  of its  portfolio  securities,  it may be deemed to be an
underwriter  under federal  securities  laws;  (4) make loans to other  persons,
except  that the  acquisition  of  bonds,  debentures  or other  corporate  debt
securities  and  investment  in  government   obligations,   commercial   paper,
pass-through   instruments,   certificates  of  deposit,   bankers  acceptances,
repurchase  agreements or any similar  instruments  shall not be subject to this
limitation,  and  except  further  that  each  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 each
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
each 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,
except securities issued or guaranteed by the U.S.  Government,  its agencies or
instrumentalities  or (ii) 10% of the  voting  securities  of such  issuer;  (7)
invest more than 25% of its assets,  taken at market value, in the securities of
issuers in any particular industry (excluding securities of the U.S. Government,
its agencies and  instrumentalities);  (8) issue senior securities to the extent
such  issuance  would  violate  applicable  law or (9) (with respect to the U.S.
Government  securities  series  only)  invest  in  securities  other  than  U.S.
Government Securities, as described in the Prospectus.

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.  Each 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 the securities of other  investment  companies  except as permitted by
applicable  law;  (5)  invest  in  securities  of  issuers  which,   with  their
predecessors,  have a record of less than three years' continuous operations, if
more than 5% of the Series'  total assets  would be invested in such  securities
(this restriction shall not apply to mortgaged-backed  securities,  asset-backed
securities  or  obligations  issued or guaranteed  by the U.S.  government,  its
agencies or  instrumentalities);  (6) hold securities of any issuer if more than
1/2 of 1% of the securities of such issuer are owned beneficially by one or more
officers or trustees of the series or by one or more  partners or members of the
Fund's  underwriter  or investment  adviser if these owners in the aggregate own
beneficially  more  than 5% of the  securities  of such  issuer;  (7)  invest in
warrants if, at the time of the acquisition,  its investment in warrants, valued
at the lower of cost or market,  would  exceed 5% of the  Series'  total  assets
(included  within 
                                       2
<PAGE>

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);  (8) invest in real estate limited  partnership  interests or
interests  in  oil,  gas or  other  mineral  leases,  or  exploration  or  other
development  programs,  except that the Fund may invest in securities  issued by
companies  that  engage  in oil,  gas or  other  mineral  exploration  or  other
development  activities;  (9) write,  purchase or sell puts,  calls,  straddles,
spreads or combinations  thereof,  except to the extent  permitted in the Fund's
prospectus and statement of additional information,  as they may be amended from
time to  time;  or (10)  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,  each  Series may invest in
financial futures and options on financial futures.

LENDING PORTFOLIO SECURITIES

Each Series may lend portfolio securities to registered  brokers-dealers.  These
loans,  if and when made,  may not exceed 30% of the Series' total  assets.  The
Series'  loans  of  securities  will be  collateralized  by  cash or  marketable
securities  issued or guaranteed by the U.S.  Government or its agencies  ("U.S.
Government  securities") or other  permissible means in an amount at least equal
to the market value of the loaned securities. From time to time, the each series
may pay a part of the  interest  received  with  respect  to the  investment  of
collateral to the borrower  and/or a third party that is not affiliated with the
Fund and is  acting as a  "placing  broker."  No fee will be paid to  affiliated
persons of the Fund.

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

REPURCHASE AGREEMENTS

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

The use of repurchase  agreements  involves certain risks.  For example,  if the
seller  of the  agreement  defaults  on its  obligation  to  provide  additional
collateral or to repurchase the  underlying  securities at a time when the value
of these  securities has declined,  the Series may incur a loss upon disposition
of them.  If the  seller of the  agreement  becomes  insolvent  and  subject  to
liquidation  or  reorganization  under  the  Bankruptcy  Code or other  laws,  a
bankruptcy court may determine that the underlying securities are collateral not
within  the  control  of the  Series  and are  therefore  subject to sale by the
trustee in bankruptcy. Even though the repurchase agreements may have 
                                       3
<PAGE>

maturities  of seven days or less,  they may lack  liquidity,  especially if the
issuer encounters  financial  difficulties.  While Fund management  acknowledges
these  risks,  it is  expected  that they can be  controlled  through  stringent
selection criteria and careful monitoring procedures. Fund management intends to
limit  repurchase  agreements for each Series to  transactions  with dealers and
financial  institutions  believed by Fund  management to present  minimal credit
risks. Fund management will monitor creditworthiness of the repurchase agreement
sellers on an ongoing basis.

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

WHEN-ISSUED TRANSACTIONS

As stated in the Prospectus,  each Series may purchase portfolio securities on a
when-issued basis.  When-issued  transactions involve a commitment by the Series
to purchase securities,  with payment and delivery  ("settlement") to take place
in the future, in order to secure what is considered to be an advantageous price
or yield at the time of entering into the transaction. The value of fixed-income
securities to be delivered in the future will  fluctuate as interest rates vary.
During the period between  purchase and settlement,  the value of the securities
will  fluctuate  and assets  consisting  of cash  and/or  marketable  securities
(normally  short-term U.S.  Government  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  of  fixed-income  when-issued
securities.  At the time each Series makes the commitment to purchase a security
on a when-issued basis, it will record the transaction and reflect the liability
for the  purchase  and the value of the  security in  determining  its net asset
value.  Each  Series,  generally,  has  the  ability  to  close  out a  purchase
obligation  on or before the  settlement  date rather than take  delivery of the
security.  Under no circumstance  will settlement for such securities take place
more than 120 days after the purchase date.

AVERAGE DURATION

The  Limited  Duration  Government  Series  limits its average  dollar  weighted
portfolio  duration  to a  range  of one to  four  years.  However,  many of the
securities in which the Series invests will have  remaining  durations in excess
of four years.

Some of the securities in the Limited Duration  Government Series' portfolio may
have periodic  interest rate adjustments  based upon an index such as the 91-day
Treasury Bill rate. This periodic  interest rate adjustment  tends to lessen the
volatility of the security's  price. With respect to securities with an interest
rate  adjustment  period of one year or less,  the Limited  Duration  Government
Series will, when determining average-weighted duration, treat such a security's
maturity  as  the  amount  of  time  remaining  until  the  next  interest  rate
adjustment.

Instruments such as GNMA, FNMA, FHLMC securities and similar  securities  backed
by amortizing  loans  generally  have shorter  effective  maturities  than their
stated maturities.  This is due to changes in amortization caused by demographic
and economic forces such as interest rate movements.  These effective maturities
are calculated based upon historical payment patterns and therefore have shorter
duration than would be implied by their stated final  maturity.  For purposes of
determining  the Limited  Duration  Government  Series'  average  maturity,  the
maturities of such securities will be calculated based upon the issuing agency's
payment factors using industry-accepted valuation models.

PORTFOLIO TURNOVER

For the fiscal year ended  October 31, 1995,  the  portfolio  turnover  rate was
222.00% for the Limited Duration  Government  Series compared to 895.63% for the
previous  year.  For the period  December 27, 1994 through 
                                       4

<PAGE>

October  31, 1995 the  portfolio  turnover  rate was  131.80%  for the  Balanced
Series.  On July 12, 1996,  the Fund acquired the assets of the U.S.  Government
Securities  Series (the  "Acquired  Fund"),  a series of Lord Abbett  Securities
Trust,  in  exchange  for  the  shares  of the  newly  created  U.S.  Government
Securities  Series.  For the fiscal year ended  November 30, 1995, the portfolio
turnover rate was 544.31%, versus 790.57% for the prior year.

As discussed  above,  each Series may purchase U.S.  Government  securities on a
when-issued  basis with settlement taking place after the purchase date (without
amortizing any premiums).  This  investment  technique is expected to contribute
significantly to portfolio  turnover rates.  However,  it will have little or no
transaction cost or adverse tax  consequences.  Transaction  costs normally will
exclude brokerage because each Series' fixed-income  portfolio  transactions are
usually on a principal basis and any markups charged  normally will be more than
offset  by the  beneficial  economic  consequences  anticipated  at the  time of
purchase or no purchase will be made. Generally, short-term losses on short-term
U.S.  Government  securities  purchased under this investment  technique tend to
offset any short-term gains due to such high portfolio turnover.

                                       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 50, Chairman and President

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

E. Thayer Bigelow
Time Warner Cable
300 First Stamford Place
Stamford, Connecticut

President and Chief Executive Officer of Time Warner Cable Programming, Inc.
Formerly President and Chief Operating Officer of Home Box Office, Inc.  Age
54.

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 65.

John C. Jansing
162 S. Beach Road
Hobe Sound, Florida
Retired.  Former Chairman of Independent Election Corporation of America, a
proxy tabulating firm.  Age 70.

C. Alan MacDonald
The Marketing Partnership, Inc.
27 Signal Road
Stamford, Connecticut
                                       5

<PAGE>

General Partner, The Marketing Partnership, Inc., a full service marketing
consulting firm.  Formerly Chairman and Chief Executive Officer of Lincoln
Foods, Inc., manufacturer of branded snack foods (1992-1994).  Formerly
President & CEO of Nestle Foods Corp, and prior to that, President & CEO of
Stouffer Foods Corp., both subsidiaries of Nestle SA, Switzerland.  Currently
serves as Director of Den West Restaurant Co., J. B. Williams, and
Fountainhead Water Company. Age 62.

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

President and Chief Executive Officer of Rochester Button Company.  Age 67.

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

President of Spencer Stuart & Associates,  an executive search  consulting firm.
Age 58.

The second column of the following table sets forth the compensation accrued 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.  The fifth  column  sets  forth the total  compensation
payable  by  such  funds  to the  outside  trustees.  No  director  of the  Fund
associated with Lord Abbett and no officer of the Fund received any compensation
from the Fund for acting as a trustee or officer.
<TABLE>
<CAPTION>

                                 For the Fiscal Year Ended October 31, 1995
                                 ------------------------------------------  
         (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
                           Aggregate           Fund and               to be Paid by the     Accrued by the Fund and
                           Compensation        Twelve Other Lord      Fund and Twelve       Twelve Other Lord
                           Accrued by          Abbett-sponsored       Other Lord Abbett-    Abbett-sponsored
Name of Director           the Fund1           Funds                  sponsored Funds2      Funds3
- ----------------           ------------        ------------------     --------------------  ------------------------
<S>                        <C>                 <C>                    <C>                      <C>  
   
E. Thayer Bigelow          $36                 $ 9,772                $33,600                  $41,700
Stewart S. Dixon           $37                 $22,472                $33,600                  $42,000
John C. Jansing            $38                 $28,480                $33,600                  $42,960
C. Alan MacDonald          $38                 $27,435                $33,600                  $42,750
Hansel B. Millican, Jr.    $38                 $24,707                $33,600                  $43,000
Thomas J. Neff             $37                 $16,126                $33,600                  $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. A portion of the fees payable by the Fund to its outside
   trustees are being deferred  under a plan that deems the deferred  amounts to
   be invested in shares of the Fund for later distribution to the trustees. The
   total  amount  accrued  under  the plan for each  outside  trustee  since the
   beginning of his tenure with the Trust,  including  dividends  reinvested and
   changes  in net asset  value  applicable  to such  deemed  investments  as of
   October 31, 1995,  were as follows:  Mr.  Bigelow,  $38; Mr. Dixon,  $35; Mr.
   Jansing, $51; Mr. MacDonald, $33; Mr. Millican, $51 and Mr. Neff, $49.

2. Each Lord  Abbett-sponsored fund has a retirement plan providing that outside
   trustees  will receive  annual  retirement  benefits for life equal to 80% 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.  The amounts
   stated would be payable  annually under such retirement  plans if the trustee
   were to retire at age 72 and the annual retainers  payable by such 
                                       6

<PAGE>

   funds were the same as they are today. The amounts accrued in column 3 were
   accrued by the Lord  Abbett-sponsored  funds  during the fiscal  year ended
   October 31, 1995 with respect to the retirement benefits in column 4.

3. This  column  shows  aggregate  compensation,  including  trustee's  fees and
   attendance fees for board and committee meetings,  of a nature referred to in
   footnote  one,  accrued by the Lord  Abbett-sponsored  funds  during the year
   ended December 31, 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, Carper, Cutler, Dow, Henderson,  Morris,  Nordberg and Walsh are partners
of Lord  Abbett;  the others are  employees:  Kenneth B.  Cutler,  age 63,  Vice
President and  Secretary;  Stephen I. Allen,  age 42; Daniel E. Carper,  age 44;
Robert S. Dow, age 50; Thomas S. Henderson, age 64; Robert G. Morris, age 51; E.
Wayne Nordberg,  age 59; John J. Gargana,  Jr., age 64; Paul A. Hilstad,  age 53
(with Lord  Abbett  since 1995 - formerly  Senior  Vice  President  and  General
Counsel of American Capital Management & Research,  Inc.);  Thomas F. Konop, age
53; Victor W. Pizzolato,  age 63; John J. Walsh,  age 58, Vice  Presidents;  and
Keith F. O'Connor, age 40, 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 February 1, 1996, our officers and trustees as a group owned less than 1%
of the outstanding  shares of the Limited Duration  Government  Series and 1% of
the outstanding shares of the Balanced Series.]

                                       3.
                     Investment Advisory and Other Services

As described under "Our Management" in the Prospectus, Lord Abbett is the
investment manager for the each Series.  The eight general partners of Lord
Abbett, all of whom are officers and/or trustees of the Fund, are: Stephen I.
Allen, Daniel E. Carper, Kenneth B. Cutler, Robert S. Dow, Thomas S.
Henderson, Robert G. Morris, E. Wayne Nordberg and John J. Walsh.  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 each Management  Agreement,  we are obligated to pay Lord
Abbett a monthly fee,  based on average daily net assets for each month,  at the
annual rate of .50 of 1% (in the case of the U.S.  Government  Securities Series
and the Limited  Duration  Government  Series) and .75 of 1% (in the case of the
Balanced  Series).  These fees are  allocated  among the  classes of each Series
based on the class' proportionate share of each Series average daily net assets.

Each Series  pays all of its  expenses  not  expressly  assumed by Lord  Abbett,
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.  For the period
November 4, 1993 (commencement of operations) to October 31, 1994 and the fiscal
year ended  October 31,  1995,  the  management  fees paid to Lord Abbett by the
Limited   Duration   Government   Series   amounted  to  $46,153  and   $15,561,
respectively.  For the fiscal year ended  October 31, 1995,  Lord Abbett  waived
$26,725 in management  fees for the Limited  Duration  Government  Series.  With
respect to the Balanced Series,  for the period December 27, 1994  (commencement
of  operations)  to October 31, 1995 Lord Abbett  waived  $23,330 in  management
fees.  For the  fiscal  years  ended  November  30,  1994,  1993 and  1992,  the
management  fees paid to Lord Abbett by the U.S.  Government  Securities  Series
amounted to $17,590,000,  $18,250,000 and $14,040,000,  respectively. These fees
are attributable to the Class A shares of all of the above Series only.
                                       7
<PAGE>
Each Series has agreed with the State of California to limit operating  expenses
(including management fees but excluding taxes, interest, extraordinary expenses
and brokerage  commissions)  to 2 1/2% of each Series' average annual net assets
up to $30,000,000,  2% of the next $70,000,000 of such assets and 1 1/2% of such
assets in excess of $100,000,000.  However, as described in the Prospectus,  the
Fund has adopted a Plan for each class of each Series  pursuant to Rule 12b-1 of
the Act.  Annual  Plan  distribution  expenses  up to one percent of the Series'
average  net assets  during its fiscal year may be  excluded  from this  expense
limitation.  The  expense  limitation  is a  condition  on the  registration  of
investment  company  shares  for sale in the  State and  applies  so long as our
shares are  registered  for sale in the State.  Deloitte & Touche LLP, Two World
Financial  Center,  New  York,  New  York  10281,  are  the  independent  public
accountants  of the Fund and must be approved at least  annually by our trustees
to continue in such  capacity.  Deloitte & Touche LLP perform audit services for
the Fund  including  the  examination  of financial  statements  included in our
annual report to shareholders.

Bank of New York, 40 Wall Street, New York, New York, is the Fund's custodian.

                                       4.
                             Portfolio Transactions

It is expected that purchases and sales of each Series'  fixed-income  portfolio
securities  usually will be principal  transactions and normally such securities
will be  purchased  directly  from the issuer or from an  underwriter  or market
maker for the securities.  Therefore,  each Series usually will pay no brokerage
commissions  for  such  purchases.  Purchases  from  underwriters  of  portfolio
securities  will include a commission  or  concession  paid by the issuer to the
underwriter  and purchases from dealers  serving as market makers will include a
dealer's  markup.   Principal   transactions,   including   riskless   principal
transactions,  are not afforded the  protection of the safe harbor in Section 28
(e) of the Securities Exchange Act of 1934.

Each  Series'  policy is 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,  consistent
with  obtaining  best  execution,  except to the extent that we may pay a higher
commission rate as described below. This policy governs the selection of brokers
or dealers and the market in which the  transaction  is executed.  To the extent
permitted by law, we may, if  considered  advantageous,  make a purchase from or
sale to another  Lord  Abbett-sponsored  fund  without the  intervention  of any
dealer.

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

We may pay a brokerage  commission  on the  purchase or sale of a security  that
could  be  purchased  from or  sold to a  market  maker  if our net  cost of the
purchase or the net  proceeds to us of the sale are at least as  favorable as we
could obtain on a direct purchase or sale.  Brokers who receive such commissions
may also  provide  research  services  at least some of which are useful to Lord
Abbett  in their  overall  responsibilities  with  respect  to us and the  other
accounts they manage.  Research includes trading equipment and computer software
packages, acquired from third-party suppliers, that enable Lord Abbett to access
various information bases and may include the furnishing of analyses and reports
concerning  issuers,  industries,   securities,  economic  factors  and  trends,
portfolio strategy and the performance of accounts. Such services may be used by
Lord Abbett in servicing all their  accounts,  and not all of such services will
necessarily  be used by Lord Abbett in connection  with their  management of the
Fund; conversely,  such services furnished in connection with brokerage on other
accounts  managed by Lord Abbett may be used in connection with their management
of the  Fund,  and not all of such  services  will  necessarily  be used by Lord
Abbett in connection  with their advisory  services to such other  accounts.  We
have been advised by Lord Abbett that  research  services  received from brokers
cannot be allocated to any  particular  account,  are not a substitute  
                                       8
<PAGE>
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 Fund to purchase or sell portfolio  securities.  If two or more
broker-dealers are considered  capable of offering the equivalent  likelihood of
best execution, the broker-dealer who has sold our shares and/or shares of other
Lord Abbett-sponsored funds may be preferred.

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

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

During the period  from  November 4, 1993 to October 31, 1994 and for the fiscal
year ended  October  31,1995  the  Limited  Duration  Government  Series paid no
commissions to independent  brokers. For the period December 27, 1994 to October
31, 1995 the Balanced  Series paid total  commissions to independent  brokers of
$4,566 with respect to its Class A shares only.

                                       5.
                             Purchases, Redemptions
                            and Shareholder Services

Securities in each Series' portfolio 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 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 Board of Trustees of the Fund. The
Board of  Trustees  will  monitor,  on an ongoing  basis,  the Fund's  method of
valuation.

Information  concerning  how we value our shares for the purchase and redemption
of our shares is described in the Prospectus under "Purchases" and Redemptions",
respectively.
                                       9

<PAGE>

As  disclosed  in the  Prospectus,  we  calculate  our net  asset  value and are
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, Presidents' Day, Good Friday, Memorial
Day, Independence Day, Labor Day, Thanksgiving and Christmas.

The net asset  value  per  share  for the Class B shares of the U.S.  Government
Securities  Series and the Class C shares will be  determined in the same manner
as for the Class A shares (net assets divided by shares outstanding).  Our Class
B and Class C shares will be sold at net asset value.

The offering price of Class A shares of the Limited Duration  Government  Series
and the Balanced Series on October 31, 1995 was computed as follows:


                                                  Limited Duration
                                                    Government         Balanced
                                                       Series          Series
                                                  ----------------     --------
Net asset value per share (net assets divided
  by shares outstanding)  ............................$4.53             $10.71

Maximum offering price per share - net asset
  value divided by (.9700 for Limited Duration
  Government Series) and (.9525 for Balanced Series)..$4.67             $11.24

The maximum offering price as of November 30, 1994 of shares of the Acquired
Fund, which are now being sold as Class A shares of the U.S. Government
Securities Series, was computed as follows:

Net asset value per
share (net assets divided
by shares outstanding)..............................  $ 2.59

Maximum offering
price per share (net asset
value divided by .9525).............................  $ 2.72

The Fund 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 Fund, and to make  reasonable  efforts to sell
Fund shares so long as, in Lord Abbett  Distributor's  judgment,  a  substantial
distribution can be obtained by reasonable efforts.

Since  commencement  of  operations,  Lord Abbett as our  principal  underwriter
received  net  commissions  after  allowance of a portion of the sales charge to
independent dealers with respect to Class A shares as follows:
                                       10
<PAGE>

                           November 4, 1993
                                    to                        Year Ended
                           October 31, 1994                  October 31, 1995
                           ----------------                  ----------------

Gross sales charge                     $102,403                    $205,002

Amount allowed
to dealers                             $ 87,791                    $192,792
                                       --------                    --------

Net Commissions received
by Lord Abbett                         $ 14,612                    $ 12,210
                                        =======                     =======

CONVERSION  OF CLASS B  SHARES.  The  conversion  of Class B shares  of the U.S.
Government  Securities  Series 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  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 each Series
pursuant  to Rule  12b-1 of the Act for each  class of shares  available  in the
applicable series: the "A Plan", the "B Plan" (U.S. Government Securities Series
only) 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.  During the last fiscal year, the Fund accrued
or paid through Lord Abbett to authorized  institutions  $2,437,438  under the A
Plan.  Both the B Plan and the C Plan were adopted by the Fund subsequent to its
last fiscal  year.  Lord Abbett used all amounts  received  under the A Plan 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
Fund.

Each Plan  requires  the Board of  Trustees  to review,  on a  quarterly  basis,
written reports of all amounts expended pursuant to the Plan and the purpose 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 Fund's
Board of Trustees and of the Fund's  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 such Plan and
agreements.  No Plan may be amended to increase  materially the amount spent for
distribution  expenses without approval by a majority of the Series' outstanding
voting  securities  and the approval of a majority of the  trustees  including a
majority of the Series'  outside  trustees.  Each Plan may be  terminated at any
time  by vote of a  majority  of the  Fund's  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) is not 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).
                                       11

<PAGE>
CLASS A SHARES.  As stated in the Prospectus,  a CDSC 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  1%  distribution  fee 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 (offered by the
U.S.  Government  securities  series  only) (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, of providing  distribution-related service to the
Series 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:
                                             Contingent Deferred Sales Charge
Anniversary of                               on Redemptions (As % of Amount
Purchase                                     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 (ALL SERIES). 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".

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 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  
                                       12

<PAGE>
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 or  series  paid a 12b-1  fee and,  in the case of Class B
shares,  Lord Abbett  Distributor  paid no sales charge or service or Series 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)  or 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  for  those  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
Fund being  exchanged  must have a value equal to at least the  minimum  initial
investment required for the fund into which the exchange is made.

Shareholders  in other  Lord  Abbett-sponsored  funds  have  the  same  right to
exchange  their  shares  for the  corresponding  class of each  Series'  shares.
Exchanges  are based on relative  net asset values on the day  instructions  are
received by the Fund 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, depending on the 
                                       13
<PAGE>
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
$100,000 or more over a 13-month period as described in the  Prospectus,  shares
of Lord  Abbett-sponsored  funds  (other than shares of LAEF,  LASF,  LARF,  and
GSMMF, unless holdings in GSMMF 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 charges 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 Fund to sell, the full amount indicated.

RIGHTS OF ACCUMULATION.  As stated in the Prospectus,  purchasers (as defined in
the Prospectus) may accumulate their investment in Lord  Abbett-sponsored  funds
(other  than  LAEF,  LARF,  LASF,  and  GSMMF,  unless  holdings  in  GSMMF  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.

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 trustees, 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 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 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  "trustees"  and  "employees"  include  a  trustee's  or
employee's  spouse  (including  the surviving  spouse of a deceased  director or
employee).  The terms " directors"  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  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 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 shares in particular  investment  products made
available for a fee to clients of such brokers,  dealers,  registered investment
advisers and other financial  institutions,  and (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 
                                       14

<PAGE>

such funds.  Shares are offered at net asset  value to these  investors  for the
purpose of promoting  goodwill  with  employees and others with whom Lord Abbett
Distributor and/or the Fund has business relationships.

Our  Class A  shares  also may be  purchased  at net  asset  value,  subject  to
appropriate documentation, through a securities dealer where the amount invested
represents  redemption  proceeds from shares ("Redeemed Shares") of a registered
open-end management investment company not distributed or managed by Lord Abbett
(other than a money market fund),  if such  redemption has occurred no more than
60 days prior to the purchase of our shares,  the Redeemed  Shares were held for
at least six months  prior to  redemption  and the proceeds of  redemption  were
maintained in cash or a money market fund prior to purchase.  Purchasers  should
consider the impact, if any, of contingent deferred sales charges in determining
whether to redeem shares for subsequent  investment in our Class A shares.  Lord
Abbett may suspend, change or terminate this purchase option at any time.

Our Class A shares may be issued at net asset value in exchange  for the assets,
subject  to  possible  tax  adjustment,  of a  personal  holding  company  or an
investment  company.  There are economies of selling  efforts and  sales-related
expenses with respect to offers to these investors and those referred to above.

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 the Prospectus for expedited redemption procedures.

The right to redeem and receive payment, as described in the 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 25  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 30 days'  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 the Prospectus, you can invest
the  dividends  paid on your  account  into an  existing  account  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 Fund and/or any
other  Eligible Fund is described in the  Prospectus.  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 (the "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,  the CDSC will be waived on redemptions of up to 12% per
year of either the  current  net asset  value of your  account or your  original
purchase price,  whichever is higher.  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.
                                       15
<PAGE>
RETIREMENT  PLANS.  The 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  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.
                                   Performance

Each 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 3.0% with respect to the Balanced Series and 4.75% with respect to the
Limited  Duration  Government  and  U.S.  Government  Securities  Series  (as  a
percentage  of the  offering  price) is  deducted  from the  initial  investment
(unless the return is shown at net asset value).  For Class B shares of the U.S.
Government  Securities Series, 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 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 applicable  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). Total returns also assume
that all  dividends  and  capital  gains  distributions  during  the  period are
reinvested at net asset value per share,  and that the investment is redeemed at
the end of the period. Although prior to July 12, 1996, each Series had only one
class of  shares,  which  class is now  designated  Class  A,  for  purposes  of
computing  average annual  compounded  rates of total return for the Class B and
Class C shares  prior to that date,  the Series'  investment  result for Class A
shares is used, applying the Applicable Percentage, unless total return is shown
at net asset value.

Using the method to compute  average annual  compounded  total return  described
above, the total annual return for the U.S. Government Securities Series for the
one  year  ended  November  30,  1994  and the  period  from  October  15,  1985
(commencement of operations)  were -8.80% and 8.05% for the Class A shares.  The
total annual return for the Limited  Duration  Government  Series for the period
from November 4, 1993  (commencement  of operations) to October 31, 1994 and the
year ended October 31, 1995 were .85% and 4.90% for the Class A shares.  For the
period  December 27, 1994  (commencement  of operations) to October 31, 1995 the
total annual  return for the Balanced  Series was 10.80% for the Class A shares.
The redeemable value of shares of the Limited Duration Government Series and the
Balanced  Series at October 31, 1995 were $1,017 and $1,108,  respectively.  The
ending redeemable values for the U.S. Government  Securities Series for the one,
five and ten year periods  ended  November 30, 1994 and the period ended October
15, 1985 were $912, $1,359, $2,384 and $2,028, respectively.

Each Series'  yield  quotation is based on a 30-day  period ended on a specified
date, computed by dividing our net investment income per share earned during the
period by our  maximum  offering  price per share on the last day of the period.
This is determined by finding the following quotient: take the Series' dividends
and interest earned during the period minus its expenses  accrued for the period
and  divide by the  product of (i) the  average  daily 
                                       16

<PAGE>
number of Series  shares  outstanding  during the period  that were  entitled to
receive  dividends and (ii) the Series' at maximum  offering  price per share on
the last day of the period.  To this quotient add one. This sum is multiplied by
itself five times. Then one is subtracted from the product of the multiplication
and the remainder is multiplied  by two.  Yield for the Class A shares  reflects
the deduction of the maximum  initial sales charge,  but may also be shown based
on the Fund's net asset value per share.  Yields for Class B and C shares do not
reflect the deduction of the CDSC. For the 30-day period ended October 31, 1995,
the Limited Duration Government Series and Balanced Series yields were 2.26% and
2.79%, respectively. For the 30-day period ended on November 30, 1994, the yield
for the Acquired Fund was 5.51%.

It is important to remember that any figures  developed using the formulas above
represent past  performance  and an investor should be aware that the investment
return and principal  value of the 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,  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 generally will 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  federal
income 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 Series shares are not  deductible  if, within a period  beginning 30
days  before the date of the sale and ending 30 days after the date of the sale,
the taxpayer acquires stock or securities that are substantially identical.

Each Series will be subject to a 4% nondeductible  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. Each 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  that  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
each 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 Series 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 shareholders
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 or any series 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.
                                       17

<PAGE>
General.  The assets of the Fund received for the issue or sale of the shares of
each Series and all income,  earnings,  profits,  and proceeds thereof,  subject
only to the rights of creditors,  are especially  allocated to each Series,  and
constitute the underlying  assets of such Series.  The underlying assets of each
Series are  recorded on the books of account of the Fund,  and are to be charged
with the liabilities with respect to such Series and with a share of the general
expenses of the Fund. Expenses with respect to the Fund are to be allocated in a
manner and on a basis  (generally in proportion to relative  assets) deemed fair
and equitable by the trustees. In the event of the dissolution or liquidation of
the Fund,  the holders of the shares of each Series are entitled to receive as a
class the underlying assets of such Series available for distribution.

Under the Fund's  Declaration of Trust, the trustees may, upon shareholder vote,
cause  the  Fund to  merge  or  consolidate  into,  or sell  and  convey  all or
substantially  all of,  the  assets  of the  Fund or any  Series  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.

Derivative  actions on behalf of the Fund or any  Series may be brought  only by
shareholders owning not less than 50% of the then outstanding shares of the Fund
or any Series, as applicable.

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 Fund's  Code of Ethics  which
complies,  in  substance,  with each of the  recommendations  of the  Investment
Company Institute's  Advisory Group on Personal  Investing.  Among other things,
the Code  requires  that Lord  Abbett  partners  and  employees  obtain  advance
approval before buying or selling securities, submit confirmations and quarterly
transaction  reports,  and obtain  approval  before  becoming a director  of any
company;  and it prohibits  such persons from investing in a security 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 Fund to the extent contemplated
by the recommendations of such Advisory Group.

                                       9.
                              Financial Statements

The financial  statements  for fiscal year ended October 31, 1995 and the report
of  Deloitte  & Touche  LLP,  independent  public  accountants,  on such  annual
financial  statements contained in the 1995 Annual Report to Shareholders of the
Lord  Abbett  Investment  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.  Prior to July 12, 1996 the
Fund had only one class of shares, which class is now designated Class A.
                                       18


<PAGE>

PART C            OTHER INFORMATION

Item 24.          Financial Statements and Exhibits
                  ---------------------------------
                  (a)    Financial Statements
                         Part A - Financial Highlights for the period
                         November 24, 1993 (commencement of operations - Limited
                         Duration Government Series) to October 31, 1994 and the
                         year ended  October 31, 1995;  the period  December 27,
                         1994  (commencement  of operations  Balanced Series) to
                         October 31, 1995.

                         Part B - Statement  of Net Assets at October 31,  1995.
                         Statement of Operations  for the year ended October 31,
                         1995.

                  (b)    Exhibits -

                         99.B1       Amendment to Declaration of Trust*
                         99.B6       Form of Distribution Agreement**
                         99.B11      Consent of Deloitte & Touche*
                         99.B15a     Forms of Rule 12b-1 Plans for Class A and
                                     Class C shares** 
                         99.B15b     Form of Rule 12b-1 Plan for Class B
                                     shares** 
                         99.B18      Form of Plan entered into by Registrant
                                     pursuant to Rule 18f-3.***

                  *      Filed herewith.
                  **     The form of this document is incorporated by Reference
                         to Post-Effective  Amendment No. 41
                         to the Registration  Statement on Form N-1A of 
                         Lord Abbett Bond-Debenture Fund, Inc. (File
                         No. 811-2145).  The Lord Abbett  Bond-Debenture  Fund
                         document is substantially  identical
                         to that form used for the  Registrant  except  for the 
                         name of the  Registrant  and/or its
                         Series and perhaps minor differences.
                  ***    Incorporated  by  Reference  to  Post-Effective 
                         Amendment  No.  40  to  the  Registration
                         Statement on Form N-1A of Lord Abbett Bond-Debenture
                         Fund, Inc. (File No. 811-2145)


Item 25. Persons Controlled by or Under Common Control with Registrant
         ------------------------------------------------------------- 
                           None.


Item 26. Number of Record Holders of Securities
         -------------------------------------- 
                  (as of June28, 1996)


                  Aggregate - 
                  Limited Duration Government - 255
                  Balanced - 376
                  U.S. Government Securities -114,214

Item 27.          Indemnification
                  ---------------  
                  The Registrant is a Delaware  Business Trust established under
                  Chapter 38 of Title 12 of the Delaware Code. The  Registrant's
                  Declaration and Instrument of Trust at Section 4.3 relating to
                  indemnification  of  Trustees,   officers,   etc.  states  the
                  following.  
                                       1

<PAGE>
                  The Trust shall  indemnify  each of its  Trustees,
                  officers,  employees and agents  (including any individual who
                  serves at its request as director,  officer,  partner, trustee
                  or the  like  of  another  organization  in  which  it has any
                  interest as a shareholder,  creditor or otherwise) against all
                  liabilities and expenses, including but not limited to amounts
                  paid in satisfaction  of judgments,  in compromise or as fines
                  and penalties,  and counsel fees reasonably incurred by him or
                  her in  connection  with the  defense  or  disposition  of any
                  action,  suit or other proceeding,  whether civil or criminal,
                  before  any court or  administrative  or  legislative  body in
                  which he or she may be or may have been involved as a party or
                  otherwise  or with  which  he or she may be or may  have  been
                  threatened, while acting as Trustee or as an officer, employee
                  or agent of the Trust or the Trustees,  as the case may be, or
                  thereafter,  by reason of his or her being or having been such
                  a Trustee,  officer, employee or agent, except with respect to
                  any matter as to which he or she shall  have been  adjudicated
                  not to have acted in good faith in the reasonable  belief that
                  his or her  action was in the best  interests  of the Trust or
                  any Series  thereof.  Notwithstanding  anything  herein to the
                  contrary,   if   any   matter   which   is  the   subject   of
                  indemnification  hereunder  relates  only to one Series (or to
                  more than one but not all of the  Series of the  Trust),  then
                  the  indemnity  shall be paid  only out of the  assets  of the
                  affected Series. No individual shall be indemnified  hereunder
                  against any  liability  to the Trust or any Series  thereof or
                  the Shareholders by reason of willful misfeasance,  bad faith,
                  gross negligence or reckless  disregard of the duties involved
                  in the  conduct of his or her  office.  In  addition,  no such
                  indemnity  shall  be  provided  with  respect  to  any  matter
                  disposed  of by  settlement  or a  compromise  payment by such
                  Trustee,  officer,  employee  or agent,  pursuant to a consent
                  decree or otherwise,  either for said payment or for any other
                  expenses  unless  there  has been a  determination  that  such
                  compromise  is in the  best  interests  of the  Trust  or,  if
                  appropriate,  of any  affected  Series  thereof  and that such
                  Person  appears to have acted in good faith in the  reasonable
                  belief that his or her action was in the best interests of the
                  Trust or, if appropriate,  of any affected Series thereof, and
                  did not  engage  in  willful  misfeasance,  bad  faith,  gross
                  negligence or reckless disregard of the duties involved in the
                  conduct  of his or her  office.  All  determinations  that the
                  applicable   standards   of   conduct   have   been   met  for
                  indemnification hereunder shall be made by (a) a majority vote
                  of a quorum  consisting of disinterested  Trustees who are not
                  parties to the proceeding relating to indemnification,  or (b)
                  if such a quorum is not obtainable or, even if obtainable,  if
                  a majority  vote of such  quorum so  directs,  by  independent
                  legal  counsel  in  a  written  opinion,  or  (c)  a  vote  of
                  Shareholders (excluding Shares owned of record or beneficially
                  by such individual).  In addition, unless a matter is disposed
                  of with a court  determination  (i) on the  merits  that  such
                  Trustee,  officer,  employee  or agent was not  liable or (ii)
                  that such  Person was not guilty of willful  misfeasance,  bad
                  faith,  gross  negligence or reckless  disregard of the duties
                  involved   in  the   conduct   of  his  or  her   office,   no
                  indemnification  shall be provided  hereunder unless there has
                  been a determination by independent legal counsel in a written
                  opinion   that  such   Person   did  not   engage  in  willful
                  misfeasance, bad faith, gross negligence or reckless disregard
                  of the duties  involved  in the  conduct of his or her office.
                                        2
<PAGE>
                  The Trustees  may make  advance  payments out of the assets of
                  the  Trust  or,  if  appropriate,  of the  affected  Series in
                  connection  with the  expense of  defending  any  action  with
                  respect to which  indemnification  might be sought  under this
                  Section 4.3. The  indemnified  Trustee,  officer,  employee or
                  agent shall give a written  undertaking to reimburse the Trust
                  or the Series in the event it is subsequently  determined that
                  he or she is not entitled to such  indemnification and (a) the
                  indemnified Trustee,  officer, employee or agent shall provide
                  security  for his or her  undertaking,  (b) the Trust shall be
                  insured  against losses arising by reason of lawful  advances,
                  or (c) a majority of a quorum of disinterested  Trustees or an
                  independent   legal   counsel  in  a  written   opinion  shall
                  determine,  based on a review of readily  available  facts (as
                  opposed to a full trial-type inquiry), that there is reason to
                  believe that the indemnitee  ultimately will be found entitled
                  to  indemnification.  The  rights  accruing  to  any  Trustee,
                  officer,  employee or agent under these  provisions  shall not
                  exclude  any  other  right to which he or she may be  lawfully
                  entitled  and shall  inure to the benefit of his or her heirs,
                  executors, administrators or other legal representatives.

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


Item 28.          Business and Other Connections of Investment Adviser
                  ----------------------------------------------------  
                  Lord, Abbett & Co. acts as investment manager and/or principal
                  underwriter for twelve other Lord Abbett  open-end  investment
                  companies (of which it is principal underwriter for thirteen),
                  and as  investment  adviser  to  approximately  5,100  private
                  accounts.  Other than  acting as Trustees  (directors)  and/or
                  officers of  open-end  investment  companies  managed by Lord,
                  Abbett & Co.,  none of Lord,  Abbett & Co.'s  partners has, in
                  the past two  fiscal  years,  engaged  in any other  business,
                  profession, vocation or employment of a substantial nature for
                  his own  account  or in the  capacity  of  director,  officer,
                  employee, partner or trustee of any entity except as follows:

<PAGE>

                                       3
                  John J. Walsh
                  Trustee
                  Brooklyn Hospital
                  Parkside Avenue
                  Brooklyn, N.Y.


Item 29.          Principal Underwriter
                  ---------------------  
                  (a)      Lord Abbett Affiliated Fund, Inc.
                           Lord Abbett U. S. Government Securities Fund, Inc.
                           Lord Abbett Bond-Debenture Fund, Inc.
                           Lord Abbett Mid-Cap Value Fund, Inc.
                           Lord Abbett Developing Growth Fund, Inc.
                           Lord Abbett Tax-Free Income Fund, Inc.
                           Lord Abbett Government Securities Money Market 
                              Fund, Inc.
                           Lord Abbett Tax-Free Income Trust
                           Lord Abbett Global Fund, Inc.
                           Lord Abbett Equity Fund
                           Lord Abbett Series Fund, Inc.
                           Lord Abbett Research Fund, Inc.
                           Lord Abbett Investment Trust

                  Investment Adviser
                  ------------------  
                           American Skandia Trust (Lord Abbett Growth and 
                           Income Portfolio)

                  (b)      The partners of Lord, Abbett & Co. are:

                           Name and Principal        Positions and Offices
                           Business Address (1)      with Registrant
                           -------------------       ---------------------
                           Robert S. Dow             Chairman and President
                           Kenneth B. Cutler         Vice President & Secretary
                           Stephen I. Allen          Vice President
                           Daniel E. Carper          Vice President
                           Thomas S. Henderson       Vice President
                           E. Wayne Nordberg         Vice President
                           John J. Walsh             Vice President

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

                  (c)      Not applicable


Item 30.          Location of Accounts and Records
                  --------------------------------  
                  Registrant  maintains  the  records,  required by 
                  Rules 31a - 1(a) and (b), and 31a - 2(a) at its
                  main office.

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

                  Certain  records  such  as  correspondence  may be  physically
                  maintained  at the main  office of the  Registrant's  Transfer
                  Agent,  Custodian,  or Shareholder  Servicing Agent within the
                  requirements of Rule 31a-3.
                                       4
<PAGE>
Item 31.          Management Services
                  -------------------
                  None.


Item 32.          Undertakings
                  ------------
                  (c) The Registrant undertakes to furnish each person to whom a
                  prospectus is delivered with a copy of the Registrant's latest
                  annual  report  to  shareholders,  upon  request  and  without
                  charge.
                                       5

<PAGE>
                                 
                                   SIGNATURES

Pursuant to the  requirements  of the  Securities Act of 1933 and the Investment
Company Act of 1940 the Registrant  certifies that it meets all the requirements
for effectiveness of this Registration  Statement  pursuant to Rule 485(b) under
the  Securities  Act of 1933 and has duly  caused  this  Registration  Statement
and/or any  amendment  thereto  to be signed on its  behalf by the  undersigned,
thereunto duly authorized,  in the City of New York and State of New York on the
11th day of July 1996.

                                  LORD ABBETT INVESTMENT TRUST


                                  By  /S/ ROBERT S. DOW
                                     Robert S. Dow, Chairman

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



 
NAME                         TITLE                               DATE
- -----                        -----                               ----
                            Chairman, President
/s/ Robert S. Dow          Trustee                          July 11, 1996


/s/ John J. Gargana, Jr.    Vice President &                 July 11, 1996
                            Chief Financial Officer
                       
/S/ E. Thayer Bigelow       Trustee                          July 11, 1996


/s/ Stewart S. Dixon        Trustee                          July 11, 1996


/s/ John C. Jansing         Trustee                          July 11, 1996


/s/ C. Alan MacDonald       Trustee                          July 11, 1996


/s/ Hansel B. Millican, Jr. Trustee                          July 11, 1996
 

/S/ Thomas J. Neff          Trustee    

<PAGE>


CONSENT OF INDEPENDENT AUDITORS


Lord Abbett Investment Trust:

We consent to the incorporation by reference in  Post-Effective  Amendment No. 9
to  Registration  Statement  No.  33-68090 of our report dated  December  8,1995
appearing in the annual report to shareholders  and to the reference to us under
the captions "Financial  Highlights" in the Prospectus and "Investment  Advisory
and Other  Services" and  "Financial  Statements" in the Statement of Additional
Information, both of which are part of such Registration Statement.




DELOITTE & TOUCHE LLP

New York, New York
July 11, 1996

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<NAME> LORD ABBETT INVESTMENT TRUST
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   <NAME> BALANCED SERIES
       
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