NEUBERGER & BERMAN ADVISERS MANAGEMENT TRUST
485BPOS, 1999-04-28
Previous: VANGUARD SPECIALIZED PORTFOLIOS INC, 24F-2NT, 1999-04-28
Next: WITTER DEAN CORNERSTONE FUND II, POS AM, 1999-04-28







          As filed with the Securities and Exchange Commission on April 28, 1999
                                                        Registration No. 2-88566
                                        Investment Company Act File No. 811-4255
- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM N-1A
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933         |X|
                           Pre-Effective Amendment No.                       |_|
                         Post-Effective Amendment No. 30                     |X|

                                     and/or

                        REGISTRATION STATEMENT UNDER THE
                         INVESTMENT COMPANY ACT OF 1940
                                Amendment No. 30                             |X|
                        (Check appropriate box or boxes)                     |X|

                  NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST(1)
               (Exact Name of Registrant as Specified in Charter)

           605 Third Avenue, 2nd Floor, New York, New York 10158-0006
                    (Address of Principal Executive Offices)

                  Registrant's Telephone Number: (212) 476-8800

                                Lawrence Zicklin
                  c/o Neuberger Berman Management Incorporated
                           605 Third Avenue, 2nd Floor
                          New York, New York 10158-0006
                     (Name and Address of Agent for Service)

                                   Copies to:

                             Jeffrey S. Puretz, Esq.
                             Dechert Price & Rhoads
                              1775 Eye Street, N.W.
                             Washington, D.C. 20006

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

[ ]  Immediately     upon     filing    [X]  on  May  1,  1999  pursuant  to 
     pursuant to paragraph (b)               paragraph (b)                   
                                        
[ ]  60 days after  filing  pursuant    [ ]  on  _________________  pursuant 
     toparagraph (a)(1), or                  to paragraph (a)(1)             
                                        
[ ]  75 days after  filing  pursuant    [ ]  on  _________________  pursuant  
     to paragraph (a)(2) or                  to paragraph (a)(2) of Rule 485  
                                        
[ ]  This  post-effective  amendment
     designates a new effective date
     for    a    previously    filed
     post-effective amendment.

- ----------
(1)  Registrant is a "master/feeder fund." This Post-Effective  Amendment No. 30
     includes a signature page for the master fund, Advisers Managers Trust.

<PAGE>


                   NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST



                       Contents of Registration Statement
                       ----------------------------------


This Post  Effective  Amendment  No.  30 to the  Registration  Statement  of the
Neuberger Berman Advisers Management Trust consists of the following documents:

Cover Sheet
Contents of Registration Statement
Advisers Management Trust
     - Part A - Joint Prospectus
              - Individual Prospectuses
     - Part B - Statement of Additional Information
     - Part C - Other Information and Signature Page
Exhibit Index
Exhibits

<PAGE>


- ----------------------------------------------------------------================
                                                                Neuberger Berman
Neuberger Berman                                                ================
Advisers Management Trust
- --------------------------------------------------------------------------------

Joint Prospectus May 1, 1999

THESE PORTFOLIOS:

o    are offered to life  insurance  companies to serve as  investment  vehicles
     under their variable annuity and variable life insurance contracts (and, in
     the case of Balanced  Portfolio,  are also offered to qualified pension and
     retirement plans)

o    are designed for investors with long-term goals in mind

o    offer you the  opportunity  to  participate  in financial  markets  through
     professionally managed stock, bond, and money market portfolios

o    use a master/feeder structure; see "Portfolio Structure" for information on
     how it works

o    carry  certain  risks,  including  the risk  that you could  lose  money if
     portfolio shares are worth less than what you paid

o    are  mutual  funds,   not  bank   deposits,   and  are  not  guaranteed  or
     insured


Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases,  the investments for these  portfolios are managed by the same
individuals who manage one or more other Neuberger Berman mutual funds that have
similar names,  objectives,  and investment styles as a portfolio. You should be
aware that the  portfolios are likely to differ from these other mutual funds in
size,  cash  flow  pattern,  and tax  matters.  Accordingly,  the  holdings  and
performance of these  portfolios can be expected to vary from those of the other
mutual funds.

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or complete. It is unlawful for anyone to indicate otherwise.


Contents
- -------------------------------------------

 The Portfolios

 Balanced Portfolio.......................2

 Growth Portfolio.........................6

 Guardian Portfolio......................10

 Mid-Cap Growth Portfolio................14

 Partners Portfolio......................18

 Socially Responsive Portfolio...........22

 International Portfolio.................25

 Limited Maturity Bond Portfolio.........28

 Liquid Asset Portfolio..................32


 Your Investment

 Buying and Selling Portfolio Shares.....36

 Share Prices............................36

 Portfolio Structure.....................37

 Distributions and Taxes ................37

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



<PAGE>

Neuberger Berman Advisers Management Trust
Balanced Portfolio
- --------------------------------------------------------------------------------

"By keeping most of the portfolio's  assets  invested in the mid-cap segment of
 the stock market, the  portfolio  seeks  long-term  growth,  while  substantial
 investment in the  short-term  bond market has the potential to reduce risk and
 add to income."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio  seeks growth of capital and  reasonable  current  income  without
undue risk to principal.

To pursue these goals,  the  portfolio  allocates its assets  between  stocks --
primarily those of mid-capitalization  companies -- and short-term  fixed-income
securities from U.S.  government and corporate  issuers.  The portfolio seeks to
reduce  risk  by  diversifying   among  many  issuers  and  different  types  of
securities.

The  managers  may  allocate  anywhere  from  50%  to  70% of  assets  to  stock
investments,  with the balance  allocated to bond investments (at least 25%) and
operating cash. In determining the portfolio's allocation,  the managers consult
with senior management of the adviser and sub-adviser.

In selecting stocks, the managers look for fast-growing companies in emerging or
rapidly evolving industries whose characteristics may include one or more of the
following:

o    above-average growth of earnings

o    earnings that have exceeded analysts' expectations

o    financial strength

o    a strong competitive position

o    a reasonable stock price in light of the company's growth rate

The portfolio's fixed-income securities consist mainly of investment-grade bonds
and other debt securities from U.S.  government and corporate  issuers,  and may
include mortgage- and asset-backed securities. Although the portfolio may invest
in  securities  of any  maturity,  it normally  maintains  an average  portfolio
duration  of four  years or less.  In  selecting  fixed-income  securities,  the
managers monitor national trends,  looking for securities that appear relatively
underpriced or appear likely to have their credit ratings raised.


- --------------------------------------------------------------------------------
Asset Allocation
- --------------------------------------------------------------------------------

Studies of  performance  and  volatility  indicate that  balanced  portfolios of
stocks and fixed-income  securities can approach stock market  performance while
experiencing  lower volatility.  The first step in an allocation  strategy is to
determine how assets should be divided among  investment  categories.  Selecting
appropriate investments within those categories is a second step.


- --------------------------------------------------------------------------------
Mid-Cap Stocks
- --------------------------------------------------------------------------------

Mid-cap stocks have historically shown risk/return  characteristics  that are in
between  those of small- and  large-cap  stocks.  Their prices can rise and fall
substantially,   although  they  have  the  potential  to  offer   comparatively
attractive long-term returns.

Mid-caps are less widely followed on Wall Street than large-caps, which can make
it comparatively  easier to find attractive stocks that are not overpriced.


                              2 Balanced Portfolio


<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the  portfolio's  performance  depends on what  happens in the stock and
bond markets.  The behavior of these markets is  unpredictable,  particularly in
the short term. The value of your  investment  will rise and fall, and you could
lose money.

By  focusing  on mid-cap  stocks,  the  portfolio  is  subject  to their  risks,
including the risk its holdings may:

o    fluctuate more widely in price than the market as a whole

o    underperform  other  types of stock when the  market or the  economy is not
     robust

o    fall in price or be difficult to sell during market downturns

Because  the prices of most growth  stocks may be based on future  expectations,
these stocks tend to be more  sensitive  than value stocks to bad economic  news
and negative earnings surprises.  While the prices of any type of stock can rise
and fall rapidly,  growth stocks in particular may  underperform  during periods
when the market favors value stocks. The portfolio's performance may also suffer
if certain  stocks do not perform as the  portfolio  managers  expected.  To the
extent that the managers  sell stocks  before they reach their market peak,  the
portfolio may miss out on opportunities for higher performance.

Most of the performance of the fixed-income  portion of the portfolio depends on
what happens in the  investment-grade  bond market. The portfolio's total return
on its fixed-income securities could be adversely affected by a rise in interest
rates.  Typically,  when interest rates rise, the portfolio's  underlying  bonds
will decline in price. The portfolio sensitivity to this risk will increase with
any increase in the portfolio's duration.

A credit  downgrade or default that affected any of the  portfolio's  securities
would adversely affect the portfolio's performance, as would unexpected interest
rate trends  that cause  mortgage-  or  asset-backed  securities  to be paid off
substantially earlier or later than expected.

The  portfolio's  performance  may also suffer if certain  investments  or asset
allocations do not perform as portfolio managers expected.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities  lending and derivatives  could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

The use of certain  derivatives  to hedge  interest rate risk or produce  income
could  affect  portfolio  performance  if  the  derivatives  do not  perform  as
expected.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

Through active trading,  the portfolio may have a high turnover rate,  which can
mean lower performance due to increased brokerage costs.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term  securities.  This could help the portfolio avoid losses but may mean
lost opportunities.

                              3 Balanced Portfolio


<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year
- --------------------------------------------------------------------------------
     1989               
     1990                1.95
     1991               22.68
     1992                8.06
     1993                6.45
     1994               -3.36
     1995               23.76
     1996                6.89
     1997               19.45
     1998               12.18

o Best quarter: Q4 '98, up 16.55%    o Worst quarter: Q3 '98, down 12.97%
  Year-to-date performance as of 3/31/99: down 1.86%
================================================================================

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                                                           Since
                                                                       Inception
                                               1 Year      5 Years       2/28/89
- --------------------------------------------------------------------------------
 Balanced Portfolio                             12.18        11.37         11.30
 Russell Midcap Growth Index                    17.86        17.34         17.01
 Merrill Lynch 1-3 Year Treasury Index           7.00         5.99          7.42
 S&P 500 Index                                  28.52        24.02         19.06

The Russell Midcap Growth is an unmanaged index of U.S. mid-cap growth stocks.
The Merrill Lynch 1-3 Year Treasury Index is an unmanaged index of U.S.
Treasury securities.
The S&P 500 is an unmanaged index of U.S. stocks.
================================================================================

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The information at left provides  different  measures of the  portfolio's  total
return.  Total return includes the effect of distributions as well as changes in
share price, if any should occur. The figures assume that all distributions were
reinvested in the portfolio.

As a frame of reference,  the table includes two  broad-based  market indices as
well  as a  more  focused  index  of  mid-cap  growth  stocks.  The  portfolio's
performance  figures  include  all of its  expenses;  the indices do not include
costs of investment.


INVESTOR EXPENSES
- --------------------------------------------------------------------------------

The portfolio charges no fees for buying,  selling, or exchanging shares, or for
maintaining  an  account.  Your  only  portfolio  cost is your  share of  annual
operating  expenses.  You may, however,  have additional  insurance  expenses in
connection with your variable contract.

FEE TABLE
- --------------------------------------------------------------------------------

Shareholder fees                                                            None

- --------------------------------------------------------------------------------
Annual operating expenses (% of average net assets)*

These are deducted from portfolio assets, so you pay them indirectly.

        Management/administration fees                                     0.85

Plus:   Distribution (12b-1) fees                                          none
        Other expenses                                                     0.18

                                                                           .....
Equals: Total annual operating expenses                                    1.03
================================================================================

EXPENSE EXAMPLE
- --------------------------------------------------------------------------------
The example  assumes that you invested  $10,000 for the periods shown,  that you
earned a  hypothetical  5% total  return  each  year,  and that the  portfolio's
expenses  were  unchanged.  Your costs  would be the same  whether you sold your
shares or continued to hold them at the end of each period.  Actual  performance
and expenses may be higher or lower.

                                 1 Year       3 Years     5 Years       10 Years
- --------------------------------------------------------------------------------
Expenses**                        $105          $328        $569         $1,259
================================================================================

*    The figures in the table are based on last year's expenses. Actual expenses
     this  year may be higher or lower.  The table  includes  costs  paid by the
     portfolio and its share of master  portfolio costs. For more information on
     master/feeder funds, see "Portfolio Structure".

**   Under the portfolio's expense  reimbursement  arrangement  described in the
     Statement  of  Additional  Information,  your  costs for the one-,  three-,
     five-, and ten-year periods would be the same as shown here.

                              4 Balanced Portfolio


<PAGE>

<TABLE>
<CAPTION>
FINANCIAL HIGHLIGHTS
- -------------------------------------------------------------------------------------------------

Year Ended December 31,                                     1994     1995    1996    1997    1998

- -------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                        <C>      <C>     <C>     <C>     <C>  
       Share price (NAV)at beginning of year               15.62    14.51   17.52   15.92   17.80

Plus:  Income (loss) from investment operations
       Net investment income                                0.30     0.32    0.34    0.36    0.29
       Net gains/losses-- realized and unrealized          (0.80)    3.06    0.75    2.59    1.62
       Subtotal: income (loss) from investment operations  (0.50)    3.38    1.09    2.95    1.91

Minus: Distributions to shareholders
       Income dividends                                     0.23     0.28    0.41    0.30    0.42
       Capital gain distributions                           0.38     0.09    2.28    0.77    2.95
       Subtotal: distributions to shareholders              0.61     0.37    2.69    1.07    3.37
                                                           ......................................
Equals: Share price (NAV) at end of year                   14.51    17.52   15.92   17.80   16.34

<CAPTION>
- -------------------------------------------------------------------------------------------------
Ratios (% of average net assets)

The ratios show the  portfolio's  expenses and net  investment  income,  as they
actually  are as well as how they  would  have been if  certain  expense  offset
arrangements had not been in effect.

<S>                                                         <C>      <C>     <C>     <C>     <C> 
Net expenses--actual                                        0.91     0.99    1.09    1.04    1.03
Expenses(1)                                                   --     0.99    1.09    1.04    1.03
Net investment income--actual                               1.91     1.99    1.84    2.07    1.84

<CAPTION>
- -------------------------------------------------------------------------------------------------
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

<S>                                                        <C>      <C>      <C>    <C>     <C>  
Total return(2) (%)                                        (3.36)   23.76    6.89   19.45   12.18
Net assets at end of year ($ x 1,000,000)                  179.3    144.4   173.2   161.9   177.6
Portfolio turnover rate (%)                                   55       --(3)   87     103      71
=================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(2)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.  Qualified plans that are direct
     shareholders  of  the  portfolio  are  not  affected  by  insurance-related
     expenses.

(3)  Reflects  the  portfolio's  own  turnover  rate of 21% prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 55% from that date on.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Theodore  P.  Giuliano,  a Vice  President  and  Director  of  Neuberger  Berman
Management and a principal of Neuberger Berman, LLC, is the manager of the Fixed
Income  Group of Neuberger  Berman,  which he helped  establish in 1984.  He has
co-managed the portfolio's debt securities investments since its inception.

Catherine  Waterworth,  a Vice  President of Neuberger  Berman  Management,  has
co-managed the portfolio's debt securities investments since joining the firm in
December  1998.  She was a managing  director  of a major  investment  firm from
1995-98 and a senior officer at another firm prior to that.

Jennifer K. Silver is a Vice  President of  Neuberger  Berman  Management  and a
principal of Neuberger Berman,  LLC. Currently the Director of the Growth Equity
Group,  she has been  co-manager of the  portfolio's  equity  investments  since
joining the firm in 1997.  From 1981 to 1997, she was an analyst and a portfolio
manager at another firm.

Brooke A. Cobb is a Vice President of Neuberger Berman  Management.  He has been
co-manager of the portfolio's equity investments since joining the firm in 1997.
From 1972 to 1997, he was a portfolio manager at several other firms.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the management/  administrative  fees paid to Neuberger  Berman  Management were
0.85% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.

                              5 Balanced Portfolio


<PAGE>

Neuberger Berman Advisers Management Trust
Growth Portfolio
- --------------------------------------------------------------------------------

"Without question, we are growth  investors. We look for companies that we think
 will deliver positive earnings surprises, particularly those with the potential
 to do so consistently. Ideally, we want to identify companies that will someday
 rank among the Fortune 500."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks growth of capital.

To  pursue  this  goal,  the  portfolio  invests  mainly  in  common  stocks  of
mid-capitalization companies. The portfolio seeks to reduce risk by diversifying
among  many  companies  and  industries.  The  managers  look  for  fast-growing
companies that are in emerging or rapidly evolving industries.

Factors in identifying these firms may include:

o    above-average growth of earnings

o    earnings that have exceeded analysts' expectations

The  managers  may also look for other  characteristics  in a  company,  such as
financial  strength,  a strong position relative to competitors or a stock price
that  is  reasonable  in  light  of its  growth  rate.  The  managers  follow  a
disciplined  selling  strategy,  and may drop a stock from the portfolio when it
reaches a target price, fails to perform as expected,  or appears  substantially
less desirable than another stock.

- --------------------------------------------------------------------------------
Mid-Cap Stocks
- --------------------------------------------------------------------------------

Mid-cap stocks have historically shown risk/return  characteristics  that are in
between  those of small- and  large-cap  stocks.  Their prices can rise and fall
substantially,   although  they  have  the  potential  to  offer   comparatively
attractive long-term returns.

Mid-caps are less widely followed on Wall Street than large-caps, which can make
it comparatively easier to find attractive stocks that are not overpriced.

- --------------------------------------------------------------------------------
Growth Investing
- --------------------------------------------------------------------------------

For  growth  investors,  the aim is to  invest  in  companies  that are  already
successful  but could be even more so.  Often,  these  stocks are in emerging or
rapidly  evolving  industries.  While many growth stocks are known to investors,
they may not yet have reached their full  potential.  The growth  investor looks
for reasons for continued success.


                               6 Growth Portfolio


<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money.

By  focusing  on mid-cap  stocks,  the  portfolio  is  subject  to their  risks,
including the risk its holdings may:

o    fluctuate more widely in price than the market as a whole

o    underperform  other  types of stocks  when the market or the economy is not
     robust

o    fall in price or be difficult to sell during market downturns

Because the prices of most growth stocks are based on future expectations, these
stocks tend to be more  sensitive  than value  stocks to bad  economic  news and
negative earnings surprises.  While the prices of any type of stock can rise and
fall rapidly,  growth stocks in particular may underperform  during periods when
the market favors value stocks.

The portfolio's  performance may also suffer if certain stocks do not perform as
the  portfolio  managers  expected.  To the extent that the managers sell stocks
before they reach their market peak, the portfolio may miss out on opportunities
for higher  performance.  Through active trading,  the portfolio may have a high
turnover  rate,  which can mean lower  performance  due to  increased  brokerage
costs.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                               7 Growth Portfolio


<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

 [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------
     1989               29.47
     1990               -8.19
     1991               29.73
     1992                9.54
     1993                6.79
     1994               -4.99
     1995               31.73
     1996                9.14
     1997               29.01
     1998               15.53

o Best quarter: Q4 '98, up 27.07%       o Worst quarter: Q3 '98, down 21.39%
Year-to-date performance as of 3/31/99: down 3.27%

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

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                              1 Year      5 Years       10 Years
- --------------------------------------------------------------------------------
Growth Portfolio                              15.53        15.28         13.89
Russell Midcap Growth Index                   17.86        17.34         17.30
S&P 500 Index                                 28.52        24.02         19.16

The Russell Midcap Growth is an unmanaged index of U.S. mid-cap growth stocks.

The S&P 500 is an unmanaged index of U.S. stocks.

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


- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of reference,  the table includes a broad-based  market index as well
as a more focused index of mid-cap growth stocks.  The  portfolio's  performance
figures  include  all of its  expenses;  the  indices  do not  include  costs of
investment.

Because the portfolio had a policy of investing in stocks of all capitalizations
and used a comparatively more  value-oriented  investment approach prior to July
1997,  its  performance  prior to that date would have been different if current
policies had been in effect.

                               8 Growth Portfolio

<PAGE>

FINANCIAL HIGHLIGHTS
<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------

Year Ended December 31,                                       1994     1995    1996     1997     1998

- -----------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                          <C>      <C>     <C>      <C>      <C>  
        Share price (NAV)at beginning of year                24.28    20.31   25.86    25.78    30.54

Plus:   Income (loss) from investment operations
        Net investment income (loss)                          0.07     0.01   (0.07)   (0.03)   (0.10)
        Net gains/losses-- realized and unrealized           (1.11)    6.26    2.34     7.06     4.12
        Subtotal: income (loss) from investment operations   (1.04)    6.27    2.27     7.03     4.02

Minus:  Distributions to shareholders
        Income dividends                                      0.12     0.05    0.01       --       --
        Capital gain distributions                            2.81     0.67    2.34     2.27     8.27
        Subtotal: distributions to shareholders               2.93     0.72    2.35     2.27     8.27
                                                             ........................................
Equals: Share price (NAV) at end of year                     20.31    25.86   25.78    30.54    26.29
- ------------------------------------------------------------------------------------------------------

<CAPTION>
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss), as
they actually are as well as how they would have been if certain expense offset
arrangements had not been in effect.

<S>                                                           <C>      <C>     <C>      <C>      <C> 
Net expenses--actual                                          0.84     0.90    0.92     0.90     0.92
Expenses(1)                                                     --     0.90    0.92     0.90     0.92
Net investment income (loss)--actual                          0.26     0.04   (0.30)   (0.11)   (0.41)

- ------------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

<S>                                                          <C>      <C>      <C>     <C>      <C>  
Total return(2) (%)                                          (4.99)   31.73    9.14    29.01    15.53
Net assets at end of year ($ x 1,000,000)                    369.3    537.8   566.4    583.7    616.4
Portfolio turnover rate (%)                                     46       --(3)   57      113       83
=====================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).


(1)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(2)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(3)  Reflects  the  portfolio's  own  turnover  rate of 9%  prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 35% from that date on.


- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Jennifer K. Silver is a Vice  President of  Neuberger  Berman  Management  and a
principal of Neuberger Berman,  LLC. Currently the Director of the Growth Equity
Group,  she has been co-manager of the portfolio since joining the firm in 1997.
From 1981 to 1997, she was an analyst and a portfolio manager at another firm.

Brooke A. Cobb is a Vice President of Neuberger Berman  Management.  He has been
co-manager of the portfolio  since joining the firm in 1997.  From 1972 to 1997,
he was a portfolio manager at several other firms.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the  management/administration  fees paid to Neuberger  Berman  Management  were
0.83% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.


                               9 Growth Portfolio

<PAGE>

Neuberger Berman Advisers Management Trust
Guardian Portfolio
- --------------------------------------------------------------------------------

"We look for established  companies whose intrinsic  value, by our measure,  has
 yet to be discovered by the majority of investors. In managing  overall risk, a
 conscious  effort is  made  to  determine  the  risk/reward  scenario  of  each
 individual holding as well as its impact at the portfolio level."

GOAL  &  STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks long-term  growth of capital;  current income is a secondary
goal.

To pursue  these  goals,  the  portfolio  invests  mainly  in  common  stocks of
large-capitalization   companies.   Because  the  managers  tend  to  find  that
undervalued  stocks may be more  common in certain  sectors of the  economy at a
given time, the portfolio may emphasize those sectors.

The  portfolio  seeks to reduce  risk by  diversifying  among a large  number of
companies across many different industries and economic sectors, and by managing
its overall exposure to a wide variety of risk factors.

The managers look for well-managed companies whose stock prices are undervalued.

Factors in identifying these firms may include:

o    solid balance sheets

o    above-average returns

o    low price-to-earnings ratios

o    consistent earnings

The portfolio managers consider portfolio level risk management when they choose
investments.  They do this by evaluating whether there is a buildup of different
types of risk in the portfolio due to interrelationship of investments.  Through
this process,  the managers  attempt to identify  whether the  portfolio,  while
diversified,  is  comprised  of  industries  and sectors that may be affected by
common external factors.

The portfolio has the ability to change its goal without  shareholder  approval,
although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Large-Cap Stocks
- --------------------------------------------------------------------------------

Large  companies  are  usually  well-established.  They  may have a  variety  of
products  and  business  lines  and a sound  financial  base  that can help them
weather bad times.

Compared to smaller companies, large companies can be less responsive to changes
and opportunities.  At the same time, their returns have sometimes lead those of
smaller companies, often with lower volatility.


- --------------------------------------------------------------------------------
Value Investing
- --------------------------------------------------------------------------------

At any given time,  there are companies  whose stock prices are below the market
average,  based on earnings,  book value, or other financial measures. The value
investor  examines these  companies,  searching for those that may rise in price
when other investors begin to realize their worth.

                             10 Guardian Portfolio

<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money.

At times,  large-cap stocks may lag other types of stocks in performance,  which
could cause the  portfolio to perform less well than certain other mutual funds.
While they may at times be less risky than small-cap  stocks,  large-cap  stocks
may perform better or less well over time.

To the extent that a value approach  dictates an emphasis on certain  sectors of
the  market at any  given  time,  the  portfolio's  performance  is likely to be
disproportionately affected by the economic, market, and other developments that
may influence those sectors.  The  portfolio's  performance may also suffer if a
sector does not perform as the portfolio managers expected.

With a value approach, there is also the risk that stocks may remain undervalued
during a given period.  This may happen  because value stocks as a category lose
favor with investors compared to growth stocks or because the managers failed to
anticipate  which stocks or industries  would  benefit from  changing  market or
economic conditions.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

In using  certain  derivatives  to gain stock  market  exposure  for excess cash
holdings,  the  portfolio  increases  its  risk of loss.  Although  they may add
diversification, foreign securities can be riskier, because foreign markets tend
to be more volatile and currency exchange rates fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                             11 Guardian Portfolio

<PAGE>

PERFORMANCE

The bar  chart  below  shows the  portfolio's  performance  for its  first  full
calendar year. The table below the chart compares the portfolio's return to that
of a broad-based  market index.  This information is based on past  performance;
it's not a prediction of future results.

 [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------
     1989               
     1990               
     1991               
     1992               
     1993               
     1994               
     1995               
     1996               
     1997               
     1998               31.67

o Best quarter: Q1 '98, up 31.76%          o Worst quarter: Q3 '98, down 22.27%
  Year-to-date performance as of 3/31/99: up 4.49%

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


AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                                                         Since
                                                                       Inception
                                                            1 Year      11/3/97
- --------------------------------------------------------------------------------
Guardian Portfolio                                          31.67        32.20
S&P 500 Index                                               28.52        31.14
Russell 1000 Value Index                                    15.63        20.62

The S&P 500 and the Russell 1000 Value are unmanaged indices of U.S. stocks.
================================================================================

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.


As a frame of reference,  the table includes  broad-based  market  indices.  The
portfolio's  performance figures include all of its expenses; the indices do not
include costs of investment.

                             12 Guardian Portfolio


<PAGE>

<TABLE>
<CAPTION>
FINANCIAL HIGHLIGHTS

Year Ended December 31,                                        1997(1)      1998

- --------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                           <C>       <C>  
        Share price (NAV)at beginning of year                 10.00     10.52

Plus:   Income from investment operations
        Net investment income                                  0.01      0.11
        Net gains/losses-- realized and unrealized             0.51      3.22(2)
        Subtotal: income from investment operations            0.52      3.33

Minus:  Distributions to shareholders
        Income dividends                                         --      0.01
        Subtotal: distributions to shareholders                  --      0.01
                                                              ...............
Equals: Share price (NAV) at end of year                      10.52     13.84

- --------------------------------------------------------------------------------
Ratios (% of average net assets)

The ratios show the  portfolio's  expenses and net  investment  income,  as they
actually  are  as  well  as  how  they  would  have  been  if  certain   expense
reimbursement and offset arrangements had not been in effect.

Net expenses--actual                                           1.00(3)      1.00
Gross expenses(4)                                             30.06(3)      1.14
Expenses(5)                                                    1.06(3)      1.00
Net investment income--actual                                  0.98(3)      0.80

- --------------------------------------------------------------------------------
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

Total return(6) (%)                                            5.20(7)    31.67
Net assets at end of year ($ x 1,000,000)                       0.6         74.1
Portfolio turnover rate (%)                                      12          197
================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).


(1)  Period from 11/3/97 (beginning of operations) to 12/31/97.

(2)  May not accord with the change in aggregate  gains and losses in securities
     for the fiscal  period  because of the timing of sales and  repurchases  of
     portfolio shares in relation to fluctuating market values of the portfolio.

(3)  Annualized.

(4)  Shows  what  this  ratio  would  have  been if there  had  been no  expense
     reimbursement.

(5)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.

(6)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(7)  Not annualized.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Kevin L. Risen and Allan R. White III are Vice  Presidents  of Neuberger  Berman
Management  and  principals of Neuberger  Berman,  LLC. Risen has co-managed the
portfolio's assets since its inception. He joined Neuberger Berman in 1992 as an
analyst,  and has been a portfolio manager since 1995. White has been co-manager
of the portfolio  since  September  1998,  when he joined the firm. From 1989 to
1998 he was a portfolio manager at another firm.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the  management/administration  fees paid to Neuberger  Berman  Management  were
0.85% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.


                             13 Guardian Portfolio

<PAGE>

Neuberger Berman Advisers Management Trust
Mid-Cap Growth Portfolio
- --------------------------------------------------------------------------------

"We want to own today's  leading  mid-cap  companies  that have the potential to
 become  tomorrow's  Fortune 500. To do this, we screen for  financially  sound,
 high growth companies in emerging or rapidly  evolving  industries that possess
 records of sustained  profitability.  We also look for companies with a history
 of positive earnings surprises that we expect will continue for some time."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks growth of capital.

To  pursue  this  goal,  the  portfolio  invests  mainly  in  common  stocks  of
mid-capitalization companies. The portfolio seeks to reduce risk by diversifying
among  many  companies  and  industries.  The  managers  look  for  fast-growing
companies that are in emerging or rapidly evolving industries.

Factors in identifying these firms may include:

o    above-average growth of earnings

o    earnings that have exceeded analysts' expectations

The  managers  may also look for other  characteristics  in a  company,  such as
financial strength,  a strong position relative to competitors and a stock price
that  is  reasonable  in  light  of its  growth  rate.  The  managers  follow  a
disciplined  selling  strategy,  and may drop a stock from the portfolio when it
reaches a target price, fails to perform as expected,  or appears  substantially
less desirable than another stock.

The portfolio has the ability to change its goal without  shareholder  approval,
although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Mid-Cap Stocks
- --------------------------------------------------------------------------------

Mid-cap stocks have historically shown risk/return  characteristics  that are in
between  those of small- and  large-cap  stocks.  Their prices can rise and fall
substantially,   although  they  have  the  potential  to  offer   comparatively
attractive long-term returns.

Mid-caps are less widely followed on Wall Street than large-caps, which can make
it comparatively easier to find attractive stocks that are not overpriced.


- --------------------------------------------------------------------------------
Growth Investing
- --------------------------------------------------------------------------------

For  growth  investors,  the aim is to  invest  in  companies  that are  already
successful  but could be even more so.  Often,  these  stocks are in emerging or
rapidly  evolving  industries.  While many growth stocks are known to investors,
they may not yet have reached their full potential.

                          14 Mid-Cap Growth Portfolio

<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money. By focusing on mid-cap  stocks,  the portfolio is subject to their risks,
including the risk its holdings may:

o    fluctuate more widely in price than the market as a whole

o    underperform  other  types of stocks  when the market or the economy is not
     robust

o    fall in price or be difficult to sell during market downturns

Because the prices of most growth stocks are based on future expectations, these
stocks tend to be more  sensitive  than value  stocks to bad  economic  news and
negative earnings surprises.  While the prices of any type of stock can rise and
fall rapidly,  growth stocks in particular may underperform  during periods when
the market favors value stocks.

The portfolio's  performance may also suffer if certain stocks do not perform as
the  portfolio  managers  expected.  To the extent that the managers sell stocks
before they reach their market peak, the portfolio may miss out on opportunities
for higher  performance.  Through active trading,  the portfolio may have a high
turnover  rate,  which can mean lower  performance  due to  increased  brokerage
costs.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                          15 Mid-Cap Growth Portfolio


<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar  chart  below  shows the  portfolio's  performance  for its  first  full
calendar year. The table below the chart compares the portfolio's return to that
of a broad-based  market index.  This information is based on past  performance;
it's not a prediction of future results.

 [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------
     1989               
     1990               
     1991               
     1992               
     1993               
     1994               
     1995               
     1996               
     1997               
     1998               39.28

o Best quarter: Q4 '98, up 32.73%        o Worst quarter: Q3 '98, down 16.76%
Year-to-date performance as of 3/31/99: down 3.04%

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

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                                                         Since
                                                                       Inception
                                                            1 Year      11/3/97
- --------------------------------------------------------------------------------
Mid-Cap Growth Portfolio                                    39.28        52.18
S&P 400/BARRA Growth Index                                  34.86        31.64

The S&P MidCap  400/BARRA  Growth  Index is an unmanaged  index of U.S.  mid-cap
growth stocks.

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

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of  reference,  the table  includes  a  broad-based  market  index of
mid-cap growth stocks.  The portfolio's  performance  figures include all of its
expenses; the index do not include costs of investment.

                          16 Mid-Cap Growth Portfolio



<PAGE>

FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

Year Ended December 31,                                          1997(1)   1998

- --------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

        Share price (NAV)at beginning of year                   10.00     11.72

Plus:   Income from investment operations
        Net investment income (loss)                             0.01     (0.03)
        Net gains/losses-- realized and unrealized               1.71      4.61
        Subtotal: income from investment operations              1.72      4.58

Minus:  Distributions to shareholders
        Income dividends                                           --      0.01
        Capital gain distributions                                 --      0.07
        Subtotal: distributions to shareholders                    --      0.08
                                                               ................
Equals: Share price (NAV) at end of year                        11.72     16.22

- --------------------------------------------------------------------------------
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they  actually  are as well as how  they  would  have  been if  certain  expense
reimbursement and offset arrangements had not been in effect.

Net expenses-- actual                                            1.00(2)   1.00
Gross expenses(3)                                               17.73(2)   1.43
Expenses(4)                                                      1.05(2)   1.00
Net investment income (loss)-- actual                            0.83(2)  (0.20)

- --------------------------------------------------------------------------------
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

Total return(5) (%)                                             17.20(6)  39.28
Net assets at end of year ($ x 1,000,000)                         1.7      31.0
Portfolio turnover rate (%)                                        20       106

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

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  Period from 11/3/97 (beginning of operations) to 12/31/97.

(2)  Annualized.

(3)  Shows  what  this  ratio  would  have  been if there  had  been no  expense
     reimbursement.

(4)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.

(5)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(6)  Not annualized.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Jennifer K. Silver is a Vice  President of  Neuberger  Berman  Management  and a
principal of Neuberger Berman,  LLC. Currently the Director of the Growth Equity
Group,  she has been co-manager of the portfolio since its inception.  From 1981
to 1997, she was an analyst and a portfolio manager at another firm.

Brooke A. Cobb is a Vice President of Neuberger Berman  Management.  He has been
co-manager of the  portfolio  since its  inception.  From 1972 to 1997, he was a
portfolio manager at several other firms.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the  management/administration  fees paid to Neuberger  Berman  Management  were
0.85% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional  Information  for more details.


                          17 Mid-Cap Growth Portfolio

<PAGE>

Neuberger Berman Advisers Management Trust
Partners Portfolio
- --------------------------------------------------------------------------------

"Our goal is to find companies that we believe are undervalued relative to their
 earnings potential,  where we see a gap between the actual price of a stock and
 its intrinsic  value in the  marketplace.  When a company grows in value and/or
 the  valuation  gap closes,  the success of our  strategy is  realized."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks growth of capital.

To pursue this goal,  the portfolio  invests  mainly in common stocks of mid- to
large-capitalization   companies.   The  portfolio   seeks  to  reduce  risk  by
diversifying  among  many  companies  and  industries.  The  managers  look  for
well-managed companies whose stock prices are believed to be undervalued.

Factors in identifying these firms may include:

o    strong fundamentals

o    consistent cash flow

o    a sound track record through all phases of the market cycle

The managers  may also look for other  characteristics  in a company,  such as a
strong position  relative to competitors,  a high level of stock ownership among
management,  and a recent  sharp  decline in stock price that  appears to be the
result of a short-term market overreaction to negative news.

The portfolio  generally considers selling a stock when it reaches the managers'
target price, when it fails to perform as expected,  or when other opportunities
appear more attractive. The portfolio has the ability to change its goal without
shareholder approval, although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Mid- and Large-Cap Stocks
- --------------------------------------------------------------------------------

Large  companies are usually  well-established.  Compared to mid-cap  companies,
they may be less  responsive to change,  but their returns have  sometimes  lead
those of mid-cap companies, often with lower volatility.

Mid-cap stocks have historically performed more like small-caps than like large-
caps.  Their  prices  can rise and fall  substantially,  although  they have the
potential to offer attractive long-term returns.

- --------------------------------------------------------------------------------
Value Investing
- --------------------------------------------------------------------------------

At any given time,  there are companies  whose stock prices are below the market
average,  based on earnings,  book value, or other financial measures. The value
investor  examines these  companies,  searching for those that may rise in price
when other investors begin to realize their worth. 


                             18 Partners Portfolio


<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money.

To the extent that the portfolio  emphasizes mid- or large-cap  stocks, it takes
on the  associated  risks.  Mid-cap  stocks  tend to be  somewhat  riskier  than
large-cap  stocks;  over time,  however,  large-cap stocks may perform better or
less well than mid-cap  stocks.  At any given time, one or both groups of stocks
may be out of favor with investors.  If the portfolio emphasizes either group of
stocks, its performance could suffer.

With a value approach, there is also the risk that stocks may remain undervalued
during a given period.  This may happen  because value stocks as a category lose
favor with investors compared to growth stocks or because the managers failed to
anticipate  which stocks or industries  would  benefit from  changing  market or
economic conditions.

To the extent that the managers sell stocks before they reach their market peak,
the  portfolio may miss out on  opportunities  for higher  performance.  Through
active  trading,  the portfolio may have a high  turnover  rate,  which can mean
lower performance due to increased brokerage costs.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                             19 Partners Portfolio


<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

 [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------
     1989               
     1990               
     1991               
     1992               
     1993               
     1994               
     1995               36.47
     1996               29.57
     1997               31.25
     1998                4.21

o Best quarter: Q4 '98, up 15.64%          o Worst quarter: Q3 '98, down 14.96%
Year-to-date performance as of 3/31/99: up 1.90%
================================================================================


AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                                                         Since
                                                                       Inception
                                                            1 Year      3/22/94
- --------------------------------------------------------------------------------
Partners Portfolio                                           4.21        19.71
S&P 500 Index                                               28.52        25.13
Russell 1000 Value Index                                    15.63        21.60

The S&P 500 and Russell 1000 Value are unmanaged indices of U.S. stocks.
================================================================================

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of reference,  the table includes  broad-based  market  indices.  The
portfolio's  performance figures include all of its expenses; the indices do not
include costs of investment.

                             20 Partners Portfolio


<PAGE>

<TABLE>
<CAPTION>
FINANCIAL HIGHLIGHTS
- ------------------------------------------------------------------------------------------------------------

Year Ended December 31,                                       1994(1)    1995       1996      1997      1998

- ------------------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                          <C>         <C>       <C>       <C>       <C>  
        Share price (NAV)at beginning of year                10.00       9.77      13.23     16.48     20.60
                                                                                                 
Plus:   Income (loss) from investment operations                                                 
        Net investment income                                 0.03       0.11       0.10      0.12      0.20
        Net gains/losses--realized and unrealized            (0.26)      3.43       3.69      4.82      0.73
        Subtotal: income (loss) from investment operations   (0.23)      3.54       3.79      4.94      0.93
                                                                                                 
Minus:  Distributions to shareholders                                                            
        Income dividends                                        --       0.01       0.04      0.05      0.08
        Capital gain distributions                              --       0.07       0.50      0.77      2.52
        Subtotal: distributions to shareholders                 --       0.08       0.54      0.82      2.60
                                                             ...............................................
Equals: Share price (NAV) at end of year                      9.77      13.23      16.48     20.60     18.93
                                                                                                 
- ------------------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)                                                                 
                                                                                                 
The ratios show the  portfolio's  expenses and net  investment  income,  as they
actually  are as well as how they  would  have been if  certain  expen se offset
arrangements had not been in effect.
                                                                                                 
<S>                                                          <C>         <C>        <C>       <C>       <C> 
Net expenses--actual                                         1.75(2)     1.09       0.95      0.86      0.84
Expenses(3)                                                    --        1.09       0.95      0.86      0.84
Net investment income--actual                                0.45(2)     0.97       0.60      0.60      1.04
                                                                                                 
- ------------------------------------------------------------------------------------------------------------
<CAPTION>
Other data                                                                                       
                                                                                                 
Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turn over rate
reflects how actively the portfolio bought and sold securities.
                                                                                                 
<S>                                                          <C>   <C>  <C>        <C>       <C>        <C> 
Total return(4) (%)                                          (2.30)(5)  36.47      29.57     31.25      4.21
Net assets at end of year ($ x 1,000,000)                      9.4      207.5      705.4   1,632.8   1,630.5
Portfolio turnover rate (%)                                     90         --(6)     118       106       148
============================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).


(1)  Period from 3/22/94 (beginning of operations) to 12/31/94.

(2)  Annualized.

(3)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(4)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(5)  Not annualized.

(6)  Reflects  the  portfolio's  own  turnover  rate of 76% prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 98% from that date on.


- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Michael M. Kassen,  Robert I. Gendelman and S. Basu Mullick are Vice  Presidents
of Neuberger Berman Management. Kassen and Gendelman are principals of Neuberger
Berman,  LLC.  Kassen and Gendelman  have been  managers of the portfolio  since
1994,  Mullick since 1998.  Mullick was a portfolio manager at another firm from
1993 to 1998.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the  management/administration  fees paid to Neuberger  Berman  Management  were
0.78% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.

                             21 Partners Portfolio


<PAGE>

Neuberger Berman Advisers Management Trust
Socially Responsive Portfolio
- --------------------------------------------------------------------------------

"We believe that sound  practices in areas like  employment and the  environment
 can have a positive  impact on a company's  bottom line.  We look for companies
 that meet value  investing  criteria  and also show a  commitment  to uphold or
 improve their standards of corporate citizenship."

GOAL  &  STRATEGY
- --------------------------------------------------------------------------------

The  portfolio  seeks  long-term  growth of capital by  investing  primarily  in
securities of companies that meet the portfolio's  financial criteria and social
policy.

To pursue this goal,  the portfolio  invests  mainly in common stocks of mid- to
large-capitalization  companies. The portfolio seeks to reduce risk by investing
in a large number of companies  across many different  industries.  The managers
initially  screen  companies  using  value  investing  criteria.  They  look for
undervalued companies with solid balance sheets,  strong management,  consistent
cash flows, and other value-related factors.

Among companies that meet these criteria,  the managers look for those that show
leadership in three areas:

o    environmental concerns

o    diversity in the work force

o    progressive employment and workplace practices

The managers  typically also look at a company's record in public health and the
nature of its products.  The managers judge firms on their corporate citizenship
overall, considering their accomplishments as well as their goals.

While these  judgments  are  inevitably  subjective,  the portfolio has a strict
policy of avoiding  companies  that receive more than 5% of their  earnings from
alcohol,  tobacco,  gambling,  or  weapons,  as  well  as  companies  that  sell
non-consumer products to the military or are involved in nuclear power.

The portfolio has the ability to change its goal without  shareholder  approval,
although it does not currently intend to do so.


- --------------------------------------------------------------------------------
Social Investing
- --------------------------------------------------------------------------------

Portfolios  that follow social  policies seek  something in addition to economic
success.  They are  designed to allow  investors  to put their money to work and
also support companies that follow principles of good corporate citizenship.


- --------------------------------------------------------------------------------
Value Investing
- --------------------------------------------------------------------------------

At any given time,  there are companies  whose stock prices are below the market
average,  based on earnings,  book value, or other financial measures. The value
investor  examines these  companies,  searching for those that may rise in price
when other investors begin to realize their worth.

                        22 Socially Responsive Portfolio

<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money.  The  portfolio's  social policy could cause it to  underperform  similar
portfolios that do not have a social policy.

Among the reasons for this are:

o    undervalued  stocks that don't meet the social  criteria  could  outperform
     those that do

o    economic or political  changes could make certain companies less attractive
     for investment

o    the  social  policy  could  cause  the  fund to sell or avoid  stocks  that
     subsequently perform well

To the extent that the portfolio  emphasizes mid- or large-cap  stocks, it takes
on the  associated  risks.  Mid-cap  stocks  tend to be  somewhat  riskier  than
large-cap  stocks;  over time,  however,  large-cap stocks may perform better or
less well than mid-cap  stocks.  At any given time, one or both groups of stocks
may be out of favor with investors.  If the portfolio emphasizes either group of
stocks, its performance could suffer.

With a value approach, there is also the risk that stocks may remain undervalued
during a given period.  This may happen  because value stocks as a category lose
favor with investors compared to growth stocks or because the managers failed to
anticipate  which stocks or industries  would  benefit from  changing  market or
economic conditions.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements. These investments are not subject to the portfolio's social policy.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                        23 Socially Responsive Portfolio


<PAGE>

PERFORMANCE OF A
SIMILAR FUND
- --------------------------------------------------------------------------------

Because the portfolio commenced  investment  operations on February 18, 1999, it
does not have performance to report in this prospectus.

However, the portfolio has an investment objective,  policies,  limitations, and
strategies substantially similar to those of, and the same portfolio manager as,
another mutual fund managed by Neuberger Berman  Management called the Neuberger
Berman Socially  Responsive Fund. The following table shows average annual total
returns  for that fund as well as the  Standard  & Poor's  500  Index,  which is
pertinent to the Neuberger Berman Socially Responsive Fund.

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                                                         Since
                                                                       Inception
                                                            1 Year       3/16/94
- --------------------------------------------------------------------------------
Socially Responsive Fund                                    15.01        18.67
S&P 500 Index                                               28.52        25.00

The S&P 500 is an unmanaged index of U.S. stocks.
================================================================================

The  performance  of Neuberger  Berman  Socially  Responsive  Fund reflects that
fund's expense ratio, and does not reflect any expenses or charges that apply to
variable  contracts.  Insurance  expenses and charges would reduce  performance.
Although the objective,  policies,  limitations  and strategies of the portfolio
are  substantially  similar to that of the Neuberger Berman Socially  Responsive
Fund,  the  portfolio  is a distinct  mutual fund and may have  different  fees,
expenses,    investment   returns,    portfolio   holdings,    and   risk/return
characteristics  than Neuberger Berman Socially  Responsive Fund. The historical
performance of Neuberger  Berman  Socially  Responsive Fund is not indicative of
future performance of the portfolio.

This  performance  representation  relies on data suppplied by Neuberger  Berman
Management or derived by Neuberger Berman Management from statistical  services,
reports or other sources it believes to be reliable.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Janet Prindle,  a Vice President of Neuberger Berman  Management and a principal
of Neuberger  Berman,  LLC joined the latter firm in 1977. She has been managing
assets  using  social  criteria  since  1990,  and has been the  manager  of the
portfolio since its inception.

Robert Ladd and Ingrid  Saukaitis  are  Assistant  Vice  Presidents of Neuberger
Berman  Management and have been Associate  Managers of the portfolio  since its
inception.  Ladd has been a portfolio manager at the firm since 1992;  Saukaitis
was a project director for a social research group from 1995 to 1997.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide management and related services.

The  portfolio  pays the  following  fees to Neuberger  Berman  Management,  all
expressed as a  percentage  of the  portfolio's  average  daily net assets:  for
investment management,  0.55% of the first $250 million; 0.525% of the next $250
million;  0.50% of the next $250  million;  and 0.475% of the next $250 million;
0.45% of the next $500  million;  and 0.425% on assets  over $1.5  billion;  and
0.30% for administration.  The portfolio's  management  agreements are contracts
and may be altered under certain circumstances.  Neuberger Berman Management has
agreed to limit the portfolio's  annual operating expenses when certain expenses
exceed a specified  limit.  This agreement is voluntary and may be  discontinued
after  it  expires.  See  the  Statement  of  Additional  Information  for  more
details.


                        24 Socially Responsive Portfolio


<PAGE>

Neuberger Berman Advisers Management Trust
International Portfolio
- --------------------------------------------------------------------------------

"In  identifying  attractive  stocks  from  among the many  thousands  currently
 available  outside the U.S.,  it's  important  to have a clear  strategy.  This
 portfolio  uses  a  combination  of  growth  and  value  criteria,  while  also
 considering larger scale economic factors."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks long-term growth of capital by investing primarily in common
stocks of foreign companies.

To pursue this goal, the portfolio  invests  mainly in foreign  companies of any
size, including companies in developed and emerging  industrialized markets. The
portfolio  defines a foreign  company  as one that is  organized  outside of the
United States and conducts the majority of its business abroad.

The  portfolio  seeks to reduce  risk by  diversifying  among  many  industries.
Although it has the flexibility to invest a significant portion of its assets in
one country or region,  it generally intends to remain  well-diversified  across
countries and geographical regions.

In picking  stocks,  the  manager  looks for  well-managed  companies  that show
potential  for  above-average  growth or whose stock  prices are  believed to be
undervalued. Factors in identifying these firms may include strong fundamentals,
such as  attractive  cash flows and balance  sheets,  as well as prices that are
reasonable in light of projected earnings growth. The manager also considers the
outlooks for various countries and regions around the world, examining economic,
market, social, and political conditions.

The portfolio has the ability to change its goal without  shareholder  approval,
although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Foreign Stocks
- --------------------------------------------------------------------------------

There are many promising  opportunities  for  investment  outside the U.S. These
foreign markets often respond to different factors, and therefore tend to follow
cycles that are different from each other.

For this reason,  many  investors  put a portion of their  portfolios in foreign
investments  as a way of gaining  further  diversification.  While foreign stock
markets can be risky,  investors gain an opportunity to add potential  long-term
growth.

                           25 International Portfolio


<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the  portfolio's  performance  depends on what happens in  international
stock markets.  The behavior of these markets is unpredictable,  particularly in
the short  term.  Because of this,  the value of your  investment  will rise and
fall, sometimes sharply, and you could lose money.

Foreign stocks are riskier than comparable U.S. stocks.  This is in part because
foreign markets are less developed and foreign governments, economies, laws, tax
codes and  securities  firms may be less stable.  There is also a higher  chance
that key  information  will be  unavailable,  incomplete,  or  inaccurate.  As a
result,  foreign stocks can fluctuate more widely in price than  comparable U.S.
stocks,  and they may also be less liquid.  These risks are generally greater in
emerging markets.  Over a given period of time,  foreign stocks may underperform
U.S. stocks -- sometimes for years. The portfolio could also underperform if the
manager invests in the wrong countries or regions.

Changes in currency  exchange rates bring an added  dimension of risk.  Currency
fluctuations could erase investment gains or add to investment losses.

To the extent that the portfolio invests in growth stocks or in value stocks, it
takes on the risks  associated  with both  types of  stocks.  Growth  stocks may
suffer more than value stocks  during market  downturns,  while value stocks may
remain  undervalued.  Either type of stock may  underperform  the other during a
given period.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.  The portfolio may use derivatives  for hedging and for  speculation.
Hedging  could reduce the  portfolio's  losses from currency  fluctuations,  but
could also reduce its gains.  A derivative  instrument  could fail to perform as
expected. Any speculative investment could cause a loss for the portfolio.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                           26 International Portfolio


<PAGE>

PERFORMANCE OF A
SIMILAR FUND
- --------------------------------------------------------------------------------

Because the portfolio had not commenced investment operations as of December 31,
1998, it does not have performance to report in this prospectus.

However, the portfolio has an investment objective,  policies,  limitations, and
strategies substantially similar to those of, and the same portfolio manager as,
another mutual fund managed by Neuberger Berman  Management called the Neuberger
Berman  International  Fund.  The  following  table shows  average  annual total
returns  for that  fund as well as the EAFE  Index,  which is  pertinent  to the
Neuberger Berman International Fund.

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                                                         Since
                                                                       Inception
                                                            1 Year       6/15/94
- --------------------------------------------------------------------------------
Neuberger Berman International Fund                          2.35        9.45
EAFE Index                                                  20.33        8.50

The EAFE is an unmanaged index of stocks from Europe, Australasia,  and the Far
East.
================================================================================

The  performance  of Neuberger  Berman  International  Fund reflects that fund's
expense  ratio,  and does not  reflect  any  expenses  or charges  that apply to
variable  contracts.  Insurance  expenses and charges would reduce  performance.
Although the objective,  policies,  limitations  and strategies of the portfolio
are substantially  similar to that of the Neuberger Berman  International  Fund,
the portfolio is a distinct mutual fund and may have different  fees,  expenses,
investment returns,  portfolio holdings,  and risk/return  characteristics  than
Neuberger  Berman  International  Fund. The historical  performance of Neuberger
Berman  International  Fund  is not  indicative  of  future  performance  of the
portfolio.

This  performance  representation  relies on data suppplied by Neuberger  Berman
Management or derived by Neuberger Berman Management from statistical  services,
reports or other sources it believes to be reliable.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Valerie Chang is an Assistant Vice President of Neuberger Berman Management.  In
1996 she joined the firm and became assistant manager of the portfolio.  She has
been the manager since 1997.  She began her career in 1990 in banking,  and from
1995 to 1996 was a senior securities analyst at another firm.

Benjamin E. Segal is an Assistant Vice President of Neuberger Berman  Management
and has been an Associate Manager of the portfolio since January 1999. He was an
assistant portfolio manager at another firm from 1997 to 1998. Prior to 1997, he
held positions in international finance and consulting.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide management and related services.

The  portfolio  pays the  following  fees to Neuberger  Berman  Management,  all
expressed as a  percentage  of the  portfolio's  average  daily net assets:  for
investment management,  0.85% of the first $250 million; 0.825% of the next $250
million; 0.80% of the next $250 million;  0.775% of the next $250 million; 0.75%
of the next $500 million;  and 0.725% on assets over $1.5 billion; and 0.30% for
administration.  The portfolio's management agreements are written contracts and
may be altered under certain  circumstances.  Neuberger  Berman  Management  has
voluntarily  agreed  to limit  the  portfolio's  expenses  when  certain  annual
operating  expenses of the portfolio exceed the agreed-upon  limit. This expense
limitation  agreement may be discontinued after it expires. See the Statement of
Additional  Information  for more  details.

                           27 International Portfolio


<PAGE>

Neuberger Berman Advisers Management Trust
Limited Maturity Bond Portfolio
- --------------------------------------------------------------------------------

"Historically, limited maturity portfolios have been able to deliver much of the
 yield  available in the  investment-grade  bond market while  offering  reduced
 share price  fluctuation.  With this in mind, we strive to manage the portfolio
 with an emphasis on yield and risk management."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The  portfolio  seeks the  highest  available  current  income  consistent  with
liquidity and low risk to principal; total return is a secondary goal.

To pursue these goals, the portfolio  invests mainly in  investment-grade  bonds
and other debt securities from U.S. government and corporate issuers.  These may
include  mortgage-  and  asset-backed  securities.  To  enhance  yield  and  add
diversification,  the portfolio may invest up to 10% of net assets in securities
that are below investment  grade,  provided that, at the time of purchase,  they
are rated at least B by Moody's or Standard  and Poor's or, if unrated by either
of these, are believed by the manager to be of comparable quality.

The portfolio seeks to reduce credit risk by diversifying among many issuers and
different  types of  securities.  Although  it may invest in  securities  of any
maturity,  under normal circumstances it maintains an average portfolio duration
of four years or less. The managers monitor national trends in the corporate and
government  securities  markets,  including  a range of economic  and  financial
factors.

The managers look for securities that appear underpriced  compared to securities
of similar  structure and credit  quality,  and securities that appear likely to
have their  credit  ratings  raised.  In choosing  lower-rated  securities,  the
managers  look  for  bonds  from  issuers   whose   financial   health   appears
comparatively strong but that are smaller or less well known to investors.

- --------------------------------------------------------------------------------
Duration
- --------------------------------------------------------------------------------

Duration  is a  measurement  of a bond  investment's  sensitivity  to changes in
interest  rates.  Typically,  with a 1% rise in interest  rates, an investment's
value may be expected to fall approximately 1% for each year of its duration.


- --------------------------------------------------------------------------------
Bond Ratings
- --------------------------------------------------------------------------------

Most large issuers obtain  ratings for their bonds from one or more  independent
rating agencies, although many bonds of all quality levels remain unrated.

Bonds in the top four  categories of credit  quality are  considered  investment
grade. Bonds in the fifth or sixth category (BB/Ba or B) are called lower-rated,
or  non-investment-grade.  Many of these  "junk  bonds" are  actually  issued by
reputable  companies,  and offer  attractive  yields.


                       28 Limited Maturity Bond Portfolio


<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most  of  the   portfolio's   performance   depends  on  what   happens  in  the
investment-grade  bond market.  The value of your investment will rise and fall,
and you could lose money.  The  portfolio's  yield and total  return will change
with interest rate movements.  When interest rates rise, the  portfolio's  share
price will typically fall.

The portfolio's  sensitivity to this risk will increase with any increase in the
fund's  duration.  A  downgrade  or  default  affecting  any of the  portfolio's
securities would affect the portfolio's  performance.  Performance could also be
affected if unexpected  interest rate trends cause the  portfolio's  mortgage-or
asset-backed  securities  to be paid off  substantially  earlier  or later  than
expected.

Over time, the portfolio may produce a lower return than stock  investments  and
less conservative bond investments.  Although over the long term the portfolio's
average  performance  has outpaced  inflation,  it may not always do so. Through
active  trading,  the portfolio may have a high  turnover  rate,  which can mean
increased transaction costs.


- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

The use of certain  derivatives  to hedge  interest rate risk or produce  income
could  affect  portfolio  performance  if  the  derivatives  do not  perform  as
expected.

Foreign  securities  could  add to the ups and  downs in the  portfolio's  share
price,  because foreign  markets tend to be more volatile and currency  exchange
rates fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term  securities.  This could help the portfolio avoid losses but may mean
lost opportunities.

                       29 Limited Maturity Bond Portfolio


<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year
- --------------------------------------------------------------------------------
     1989               10.77
     1990                8.32
     1991               11.34
     1992                5.18
     1993                6.63
     1994               -0.15
     1995               10.94
     1996                4.31
     1997                6.74
     1998                4.39

o Best quarter: Q2 '89, up 4.96%           o Worst quarter: Q1 '94, down 1.08%
Year-to-date performance as of 3/31/99: up 0.33%
================================================================================


AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                             1 Year      5 Years       10 Years
- --------------------------------------------------------------------------------
Limited Maturity Bond Portfolio               4.39        5.18          6.79
Merrill Lynch 1-3 Year Treasury Index         7.00        5.99          7.37

The  Merrill  Lynch  1-3  Year  Treasury  Index is an  unmanaged  index of U.S.
Treasuries with maturities between 1 and 3 years.
================================================================================


- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of  reference,  the table  includes a broad-based  market index.  The
portfolio's  performance figures include all of its expenses; the index does not
include costs of investment.

To obtain the portfolio's current yield, call 800.877.9700. The current yield is
the fund's net income over a recent 30-day period expressed as an annual rate of
return.


                       30 Limited Maturity Bond Portfolio


<PAGE>

<TABLE>
<CAPTION>
FINANCIAL HIGHLIGHTS

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

 Year Ended December 31,                                      1994     1995    1996     1997    1998

- ----------------------------------------------------------------------------------------------------
Per-share data ($)

 Data have  been  computed  based on the  average  number of shares  outstanding
 throughout  each year  indicated.  You can see what the  portfolio  earned  (or
 lost), what it distributed to investors, and how its share price changed.

<S>                                                          <C>      <C>     <C>      <C>     <C>  
        Share price (NAV)at beginning of year                14.66    14.02   14.71    14.05   14.12

Plus:   Income (loss) from investment operations
        Net investment income (loss)                          0.78     0.82    0.92     0.88    0.80
        Net gains/losses-- realized and unrealized           (0.80)    0.65   (0.34)    0.02   (0.21)
        Subtotal: income (loss) from investment operations   (0.02)    1.47    0.58     0.90    0.59

Minus:  Distributions to shareholders
        Income dividends                                      0.55     0.78    1.24     0.83    0.89
        Capital gain distributions                            0.07       --      --       --      --
        Subtotal: distributions to shareholders               0.62     0.78    1.24     0.83    0.89
                                                            ........................................
Equals: Share price (NAV) at end of year                     14.02    14.71   14.05    14.12   13.82

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)

The ratios show the  portfolio's  expenses and net  investment  income,  as they
actually  are as well as how they  would  have been if  certain  expense  offset
arrangements had not been in effect.

<S>                                                           <C>      <C>     <C>      <C>     <C> 
Net expenses--actual                                          0.66     0.71    0.78     0.77    0.76
Expenses(1)                                                     --     0.71    0.78     0.77    0.76
Net investment income--actual                                 5.42     5.99    6.01     6.27    5.83

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

<S>                                                          <C>      <C>      <C>      <C>     <C> 
Total return(2) (%)                                          (0.15)   10.94    4.31     6.74    4.39
Net assets at end of year ($ x 1,000,000)                    344.8    238.9   256.9    251.1   277.3
Portfolio turnover rate (%)                                     90       --(3)  132       86      44
====================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(2)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(3)  Reflects  the  portfolio's  own  turnover  rate of 27% prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover  rate  of  78%  from  that  date  on.



- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Theodore  P.  Giuliano,  a Vice  President  and  Director  of  Neuberger  Berman
Management and a principal of Neuberger Berman, LLC, is the manager of the Fixed
Income  Group of Neuberger  Berman,  which he helped  establish in 1984.  He has
co-managed the portfolio since its inception.

Catherine  Waterworth,  a Vice  President of Neuberger  Berman  Management,  has
co-managed  the  portfolio  since joining the firm in December  1998.  She was a
managing  director of a major  investment firm from 1995-98 and a senior officer
at another firm prior to that.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the management/  administration  fees paid to Neuberger  Berman  Management were
0.65% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.

                       31 Limited Maturity Bond Portfolio



<PAGE>

Neuberger Berman Advisers Management Trust
Liquid Asset Portfolio
- --------------------------------------------------------------------------------

"In managing this portfolio we focus on the three main goals  investors look for
 in a money market investment:  liquidity, stability and high current income. At
 the same time, we seek to maintain high standards for credit  quality,  in some
 cases higher than required by law."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks the highest  available current income consistent with safety
and liquidity.

To pursue  this  goal,  the  portfolio  invests  in high  quality  money  market
securities.  These  securities  may be from U.S. or foreign  issuers,  including
governments and their agencies,  banks, and corporations,  but in all cases must
be  denominated  in U.S.  dollars.  The  portfolio may invest  significantly  in
commerical  paper,  and may  invest  more  than 25% of total  assets  in CDs and
similar  time  deposits  and  banker's  acceptances  issued by U.S.  banks.  The
portfolio may also invest in repurchase agreements.

The portfolio seeks to maintain a stable $1.00 share price,  and seeks to reduce
credit risk by diversifying among many issuers of money market  securities.  The
managers  monitor a range of economic and financial  factors,  in order to weigh
the yields of money market securities of various maturities against their levels
of interest rate and credit risk.  Based on their analysis,  the managers invest
the portfolio's  assets in a mix of money market  securities that is intended to
provide as high a yield as possible  without  violating the  portfolio's  credit
quality  policies or  jeopardizing  the  stability of its share price.


- --------------------------------------------------------------------------------
Money Market Funds
- --------------------------------------------------------------------------------

Money market funds are subject to federal regulations designed to help maintain
liquidity and a stable share price.  The  regulations  set strict  standards for
credit quality and maturity (397 days or less for individual securities, 90 days
or less on average for the portfolio overall).

The regulations also require money market funds to limit  investments to the top
two rating categories of credit quality.  This portfolio  typically exceeds this
requirement by investing only in top-tier  securities.  


                            32 Liquid Asset Portfolio


<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's  performance  depends on interest  rates.  When interest
rates fall, the portfolio's  yields will typically fall as well. The portfolio's
emphasis  on top-tier  credit  quality  securities  may mean that its yields are
somewhat  lower than those  available  from certain  other money  market  mutual
funds.

Over  time,  the  portfolio  may  produce  a lower  return  than  bond or  stock
investments. Although historically the portfolio's yield has outpaced inflation,
it may not always do so.

Because the  portfolio  may invest more than 25% of total  assets in  securities
issued by banks,  its performance  could be affected by factors  influencing the
health of the banking  industry.  These may include  economic  trends,  industry
competition and governmental actions, as well as factors affecting the financial
stability of borrowers.

The bank securities in which the portfolio may invest  typically are not insured
by the federal government.  Securities that do not represent deposits have lower
priority in the bank's capital structure than those that do.


- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

Although the portfolio has  maintained a stable share price since its inception,
the share price could  fluctuate,  meaning that there is a chance that you could
lose money by investing in the portfolio.

While the portfolio may hold securities that carry U.S.  government  guarantees,
these guarantees do not extend to shares of the portfolio itself.

                           33 Liquid Asset Portfolio


<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year
- --------------------------------------------------------------------------------
     1989                8.58
     1990                7.55
     1991                5.61
     1992                3.25
     1993                2.43
     1994                3.46
     1995                5.04
     1996                4.52
     1997                4.71
     1998                4.66


o Best quarter: Q2 '89, up 2.25%        o Worst quarter: Q2 '93, up 0.56%
Year-to-date performance as of 3/31/99: up 1.00%
================================================================================


AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                               1 Year     5 Years       10 Years
- --------------------------------------------------------------------------------
Liquid Asset Portfolio                          4.66        4.48          4.97
================================================================================

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes in share  price,  if any  should  occur.  The  figures  assume  that all
distributions  were  reinvested  in the  portfolio,  and include  all  portfolio
expenses.

Because the  portfolio's  share price  remained  stable  throughout  the periods
described on this page, the portfolio's yield over a given period is the same as
its total return.

To obtain the portfolio's current yield, call 800.366.6264. The current yield is
the portfolio's net income over a recent seven-day period expressed as an annual
rate of return.


                           34 Liquid Asset Portfolio

<PAGE>

<TABLE>
<CAPTION>
FINANCIAL HIGHLIGHTS
- ---------------------------------------------------------------------------------------------------------------------

Year Ended December 31,                                  1994          1995          1996          1997          1998

- ---------------------------------------------------------------------------------------------------------------------
Per-share data ($)

Data apply to a single share  throughout each year  indicated.  You can see what
the fund earned (or lost),  what it distributed to investors,  and how its share
price changed.

<S>                                                    <C>           <C>           <C>           <C>           <C>   
        Share price (NAV)at beginning of year          1.0009        0.9997        1.0000        0.9999        0.9999
                                                                                                           
Plus:   Income from investment operations                                                                  
        Net investment income                          0.0328        0.0493        0.0443        0.0461        0.0456
        Net gains/losses                                   --        0.0003       (0.0001)(1)        --            --
        Subtotal: income from investment operations    0.0328        0.0496        0.0442        0.0461        0.0456
                                                                                                           
Minus:  Distributions to shareholders                                                                      
        Income dividends                               0.0328        0.0493        0.0443        0.0461        0.0456
        Capital gain distributions                     0.0012            --            --            --            --
        Subtotal: distributions to shareholders        0.0340        0.0493        0.0443        0.0461        0.0456
                                                      ...............................................................
Equals: Share price (NAV) at end of year               0.9997        1.0000        0.9999        0.9999        0.9999

- ---------------------------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)

The ratios show the  portfolio's  expenses and net  investment  income,  as they
actually  are  as  well  as  how  they  would  have  been  if  certain   expense
reimbursement and offset arrangements had not been in effect.

<S>                                                    <C>           <C>           <C>           <C>           <C> 
Net expenses--actual                                   1.02          1.01          1.00          1.00          1.00
Gross Expenses(2)                                      1.03          1.25          1.21          1.12          1.14
Expenses(3)                                              --          1.02          1.01          1.01          1.01
Net investment income--actual                          3.28          4.90          4.44          4.61          4.56

- ---------------------------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period, assuming all distributions were reinvested.

<S>                                                    <C>           <C>           <C>           <C>           <C> 
Total return(4) (%)                                    3.46          5.04          4.52          4.71          4.66
Net assets at end of year ($ x 1,000,000)              5.3          31.9          13.5          13.4          14.8
=====================================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  May not accord with the change in aggregate  gains and losses in securities
     for the year  because of the timing of sales and  repurchases  of portfolio
     shares.

(2)  Shows  what  this  ratio  would  have  been if there  had  been no  expense
     reimbursement.

(3)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(4)  Would have been lower if Neuberger  Berman  Management  had not  reimbursed
     certain expenses. Does not reflect charges and other expenses that apply to
     the separate account or the related insurance policies.


- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Theodore  P.  Giuliano,  a Vice  President  and  Director  of  Neuberger  Berman
Management and a principal of Neuberger Berman, LLC, is the manager of the Fixed
Income  Group of Neuberger  Berman,  which he helped  establish in 1984.  He has
co-managed the portfolio since its inception.

Josephine Mahaney is a Vice President of Neuberger Berman Management. She joined
the firm in 1976 and has co-managed the portfolio since 1992.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the management/  administration  fees paid to Neuberger  Berman  Management were
0.65% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.


                           35 Liquid Asset Portfolio


<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolios  described in this  prospectus are designed for use with certain
variable  insurance  contracts and, in the case of Balanced  Portfolio,  certain
qualified  plans as  well.  Because  shares  of the  portfolios  are held by the
insurance  companies or qualified  plans  involved,  you will need to follow the
instructions  provided by your  insurance  company or qualified plan for matters
involving allocations to these portfolios.

Under certain circumstances, the portfolios reserve the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because the  portfolios  are offered to different  insurance  companies  and for
different types of variable  contracts -- annuities and life insurance -- and to
qualified plans, groups with different interests will share the portfolios.  Due
to   differences  of  tax  treatment  and  other   considerations   among  these
shareholders,  it is possible  (although  not likely) that the  interests of the
shareholders  might  sometimes be in  conflict.  In  addition,  the  portfolios'
master/feeder  structure  could lead to a conflict  between the interests of the
portfolio shareholders and the interests of other investors in the master fund's
series.  For  these  reasons,  the  trustees  of the  portfolios  watch  for the
existence of any  material  irreconcilable  conflicts  and will  determine  what
action,  if any,  should  be taken in the  event  of a  conflict.  If there is a
conflict,  it is  possible  that to resolve  it, one or more  insurance  company
separate  accounts  or  qualified  plans  might be  compelled  to  withdraw  its
investment in a portfolio.  While this might resolve the conflict, it also might
force the portfolio to sell securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When you buy and sell shares of a portfolio, the share price is that portfolio's
net asset value per share.

The  portfolios  are open for business  every day the New York Stock Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance company or plan  administrator to find out by what time your
transaction request must be received in order to be processed the same day. Each
portfolio  normally  calculates its share price as of the end of regular trading
on the Exchange on business days,  usually 4:00 p.m. eastern time.  Depending on
when your insurance company or plan administrator  accepts transaction requests,
it's possible that the portfolio's share price could change on days when you are
unable to buy or sell shares.  Because  foreign markets may be open on days when
U.S.  markets are closed,  the value of foreign  securities owned by a portfolio
could  change  on  days  when  you  can't  buy or  sell  portfolio  shares.  The
portfolio's  share  price,  however,  will not change  until the next time it is
calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

A  portfolio's  share  price  is  the  total  value  of  its  assets  minus  its
liabilities,  divided  by the total  number of  shares.  Because  the value of a
portfolio's  securities  changes every day, the share price  usually  changes as
well (an  exception  is the Liquid  Asset  Portfolio,  which seeks to maintain a
stable $1.00 share price).

The portfolios  value equity  securities by using market prices,  and value debt
securities using bid quotations from  independent  pricing services or principal
market makers.  The portfolios may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest  earned,  approximate  market  value.  Securities  in the Liquid  Asset
Portfolio  are valued  using a constant  amortization  method that is in keeping
with that portfolio's efforts to maintain a stable share price.

In rare cases,  events that occur after  markets have closed may render  certain
prices  unreliable.  When a portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved  by  its  trustees.  A
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                               36 Your Investment


<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Each of the portfolios in this prospectus uses a master/feeder structure. Rather
than  investing  directly in securities,  each portfolio is a feeder  portfolio,
meaning that it invests in a corresponding master portfolio,  known as a series.
The series in turn invests in securities, using the strategies described in this
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. No portfolio in this prospectus is currently contemplating such a move.


DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations generally affecting the portfolios and their shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions  -- Each  portfolio  pays out to  shareholders  of record  any net
income and net capital gains. Ordinarily, the portfolios make distributions once
a year (in February),  except for the Liquid Asset  Portfolio,  which ordinarily
declares income  dividends  daily and pays them once a month.  All dividends and
other  distributions  received  by  shareholders  of  record  are  automatically
reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions made by a portfolio,  as well as transactions in portfolio shares,
are  taxable,  if at all,  to the extent  described  in your  variable  contract
prospectus or qualified plan documentation. Consult them for more information.

- --------------------------------------------------------------------------------
Insurance Expenses
- --------------------------------------------------------------------------------

The fees and policies  outlined in this prospectus are set by the portfolios and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract.

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

Each portfolio has a non-fee  distribution  plan that  recognizes that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration fees paid by the portfolios,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolios and delivering portfolio documents, among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolios for making these payments.

                               37 Your Investment


<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an investment  in the  portfolios.
Because the portfolios are offered through certain variable insurance  contracts
and  qualified  plans,  they are  subject to special  diversification  standards
beyond those that normally apply to mutual funds. If the underlying  assets of a
portfolio  fail to meet the special  standards,  you could be subject to adverse
tax consequences -- for example,  some of the income earned by a portfolio could
generate a current tax liability.

The  managers  of each  portfolios'  assets  intend to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolios  could be affected by problems  relating
to the conversion of European  currencies into the Euro beginning 1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolios will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                               38 Your Investment


<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on any of these portfolios, you can request a free
copy of the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on these portfolios, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about each portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.




 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC

==================
 Neuberger Berman
==================

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180



- --------------------------------------------------------------------------------
Obtaining Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)


Web site:
www.sec.gov


You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.




[RECYCLE LOGO] NMARR5690599

SEC file number 811-425



<PAGE>

- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Liquid Asset Portfolio Prospectus May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed money market portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

Liquid Asset Portfolio................2


Your Investment

Buying and Selling Portfolio Shares...6

Share Prices..........................6

Portfolio Structure...................7

Distributions and Taxes...............7

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

<PAGE>

Neuberger Berman Advisers Management Trust
Liquid Asset Portfolio
- --------------------------------------------------------------------------------

"In managing this portfolio we focus on the three main goals  investors look for
 in a money market investment:  liquidity, stability and high current income. At
 the same time, we seek to maintain high standards for credit  quality,  in some
 cases higher than required by law."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks the highest  available current income consistent with safety
and liquidity.

To pursue  this  goal,  the  portfolio  invests  in high  quality  money  market
securities.  These  securities  may be from U.S. or foreign  issuers,  including
governments and their agencies,  banks, and corporations,  but in all cases must
be  denominated  in U.S.  dollars.  The  portfolio may invest  significantly  in
commerical  paper,  and may  invest  more  than 25% of total  assets  in CDs and
similar  time  deposits  and  banker's  acceptances  issued by U.S.  banks.  The
portfolio may also invest in repurchase agreements.

The portfolio seeks to maintain a stable $1.00 share price,  and seeks to reduce
credit risk by diversifying among many issuers of money market  securities.  The
managers  monitor a range of economic and financial  factors,  in order to weigh
the yields of money market securities of various maturities against their levels
of interest rate and credit risk.  Based on their analysis,  the managers invest
the portfolio's  assets in a mix of money market  securities that is intended to
provide as high a yield as possible  without  violating the  portfolio's  credit
quality policies or jeopardizing the stability of its share price.

- --------------------------------------------------------------------------------
Money Market Funds
- --------------------------------------------------------------------------------

Money market funds are subject to federal regulations  designed to help maintain
liquidity and a stable share price.  The  regulations  set strict  standards for
credit quality and maturity (397 days or less for individual securities, 90 days
or less on average for the portfolio overall).

The regulations also require money market funds to limit  investments to the top
two rating categories of credit quality.  This portfolio  typically exceeds this
requirement by investing only in top-tier securities.


                            2  Liquid Asset Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's  performance  depends on interest  rates.  When interest
rates fall, the portfolio's  yields will typically fall as well. The portfolio's
emphasis  on top-tier  credit  quality  securities  may mean that its yields are
somewhat  lower than those  available  from certain  other money  market  mutual
funds.

Over  time,  the  portfolio  may  produce  a lower  return  than  bond or  stock
investments. Although historically the portfolio's yield has outpaced inflation,
it may not always do so.

Because the  portfolio  may invest more than 25% of total  assets in  securities
issued by banks,  its performance  could be affected by factors  influencing the
health of the banking  industry.  These may include  economic  trends,  industry
competition and governmental actions, as well as factors affecting the financial
stability of borrowers.

The bank securities in which the portfolio may invest  typically are not insured
by the federal government.  Securities that do not represent deposits have lower
priority in the bank's capital structure than those that do.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

Although the portfolio has  maintained a stable share price since its inception,
the share price could  fluctuate,  meaning that there is a chance that you could
lose money by investing in the portfolio.

While the portfolio may hold securities that carry U.S.  government  guarantees,
these guarantees do not extend to shares of the portfolio itself.


                            3  Liquid Asset Portfolio
<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------

1989    1990    1991    1992    1993     1994     1995     1996    1997     1998
- --------------------------------------------------------------------------------

8.58    7.55    5.61    3.25    2.43     3.46     5.04     4.52    4.71     4.66
- --------------------------------------------------------------------------------

o  Best quarter: Q2 '89, up 2.25%      o  Worst quarter: Q2 '93, up 0.56%
Year-to-date performance as of 3/31/99: up 1.00%
================================================================================


Average annual total % returns  as of 12/31/98
- --------------------------------------------------------------------------------

                                                  1 Year    5 Years     10 Years
- --------------------------------------------------------------------------------
Liquid Asset Portfolio                             4.66       4.48        4.97
================================================================================


- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes in share  price,  if any  should  occur.  The  figures  assume  that all
distributions  were  reinvested  in the  portfolio,  and include  all  portfolio
expenses.

Because the  portfolio's  share price  remained  stable  throughout  the periods
described on this page, the portfolio's yield over a given period is the same as
its total return.

To obtain the portfolio's current yield, call 800.366.6264. The current yield is
the portfolio's net income over a recent seven-day period expressed as an annual
rate of return.

                            4  Liquid Asset Portfolio
<PAGE>

FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
Year Ended December 31,                                       1994     1995     1996       1997     1998

- ---------------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                          <C>      <C>      <C>        <C>      <C>  
        Share price (NAV)at beginning of year                1.0009   0.9997   1.0000     0.9999   0.9999 

Plus:   Income (loss) from investment operations                                                          
        Net investment income (loss)                         0.0328   0.0493   0.0443     0.0461   0.0456 
        Net gains/losses-- realized and unrealized             --     0.0003  (0.0001)(1)  --       --
        Subtotal: income (loss) from investment operations   0.0328   0.0496   0.0442     0.0461   0.0456 

Minus:  Distributions to shareholders                                                                     
        Income dividends                                     0.0328   0.0493   0.0443     0.0461   0.0456 
        Capital gain distributions                           0.0012    --       --         --       --    
        Subtotal: distributions to shareholders              0.0340   0.0493   0.0443     0.0461   0.0456 
                                                             ............................................
Equals: Share price (NAV) at end of year                     0.9997   1.0000   0.9999     0.9999   0.9999 

- ----------------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they actually are as well as how they would have been if certain  expense offset
arrangements had not been in effect.

<S>                                                           <C>     <C>      <C>        <C>      <C> 
Net expenses--actual                                          1.02    1.01     1.00       1.00     1.00
Gross Expenses(2)                                             1.03    1.25     1.21       1.12     1.14
Expenses(3)                                                    --     1.02     1.01       1.01     1.01
Net investment income (loss)--actual                          3.28    4.90     4.44       4.61     4.56

- ----------------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period, assuming all distributions were reinvested.

<S>                                                          <C>      <C>      <C>        <C>      <C>
Total return(4) (%)                                          3.46     5.04     4.52       4.71     4.66
Net assets at end of year ($ x 1,000,000)                     5.3     31.9     13.5       13.4     14.8
==========================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  May not accord with the change in aggregate  gains and losses in securities
     for the year  because of the timing of sales and  repurchases  of portfolio
     shares.

(2)  Shows  what  this  ratio  would  have  been if there  had  been no  expense
     reimbursement.

(3)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(4)  Would have been lower if Neuberger  Berman  Management  had not  reimbursed
     certain expenses. Does not reflect charges and other expenses that apply to
     the separate account or the related insurance policies.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Theodore  P.  Giuliano,  a Vice  President  and  Director  of  Neuberger  Berman
Management and a principal of Neuberger Berman, LLC, is the manager of the Fixed
Income  Group of Neuberger  Berman,  which he helped  establish in 1984.  He has
co-managed the portfolio since its inception.

Josephine Mahaney is a Vice President of Neuberger Berman Management. She joined
the firm in 1976 and has co-managed the portfolio since 1992.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the management/  administration  fees paid to Neuberger  Berman  Management were
0.65% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.


                            5  Liquid Asset Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
variable  insurance  contracts.  Because shares of the portfolio are held by the
insurance companies involved,  you will need to follow the instructions provided
by your insurance company for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts  --annuities  and life insurance,  groups
with different  interests  will share the  portfolio.  Due to differences of tax
treatment  and other  considerations  among these  shareholders,  it is possible
(although not likely) that the interests of the shareholders  might sometimes be
in conflict. In addition, the portfolio's  master/feeder structure could lead to
a conflict between the interests of the portfolio shareholders and the interests
of other investors in the master fund's series. For these reasons,  the trustees
of  the  portfolio  watch  for  the  existence  of any  material  irreconcilable
conflicts and will determine what action,  if any,  should be taken in the event
of a conflict. If there is a conflict, it is possible that to resolve it, one or
more  insurance  company  separate  accounts  might be compelled to withdraw its
investment in the  portfolio.  While this might  resolve the  conflict,  it also
might force the portfolio to sell securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance  company to find out by what time your  transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your insurance
company accepts transaction  requests,  it's possible that the portfolio's share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change until the next time it is calculated and the portfolio  seeks to maintain
a stable $1.00 share price.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of  shares.  The  portfolio  seeks to
maintain a stable  $1.00 share price.  Securities  in the  portfolio  are valued
using a constant  amortization  method that is in keeping  with the  portfolio's
efforts to maintain a stable share price.

                            6  Liquid Asset Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Liquid Asset Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio declares income dividends daily
and pays them once a month.  All dividends and other  distributions  received by
shareholders of record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are  taxable,  if at all,  to the  extent  described  in your  variable
contract prospectus. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expenses 
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract.

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                            7  Liquid Asset Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an  investment  in the  portfolio.
Because the portfolio is offered through certain variable  insurance  contracts,
it is subject to special  diversification  standards  beyond those that normally
apply to mutual funds.  If the  underlying  assets of the portfolio fail to meet
the special  standards,  you could be subject to adverse tax consequences -- for
example, some of the income earned by the portfolio could generate a current tax
liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                            8  Liquid Asset Portfolio
<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


  Investment  manager:
  Neuberger Berman Management Inc.
  Sub-adviser:
  Neuberger  Berman, LLC

==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180



- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.



[RECYCLE LOGO] NMARR5710599

SEC file number 811-425

<PAGE>


- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Growth Portfolio Prospectus  May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed stock portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.


Contents
- -------------------------------------

The Portfolio

Growth Portfolio....................2


Your Investment

Buying and Selling Portfolio Shares.6

Share Prices........................6

Portfolio Structure.................7

Distributions and Taxes ............7

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


<PAGE>

Neuberger Berman Advisers Management Trust
Growth Portfolio
- --------------------------------------------------------------------------------

"Without question, we are growth investors.  We look for companies that we think
 will deliver positive earnings surprises, particularly those with the potential
 to do so consistently. Ideally, we want to identify companies that will someday
 rank among the Fortune 500."


GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks growth of capital.

To  pursue  this  goal,  the  portfolio  invests  mainly  in  common  stocks  of
mid-capitalization companies. The portfolio seeks to reduce risk by diversifying
among  many  companies  and  industries.  The  managers  look  for  fast-growing
companies that are in emerging or rapidly evolving industries.

Factors in identifying these firms may include:

o    above-average  growth of earnings 

o    earnings that have exceeded analysts' expectations

The  managers  may also look for other  characteristics  in a  company,  such as
financial  strength,  a strong position relative to competitors or a stock price
that  is  reasonable  in  light  of its  growth  rate.  The  managers  follow  a
disciplined  selling  strategy,  and may drop a stock from the portfolio when it
reaches a target price, fails to perform as expected,  or appears  substantially
less desirable than another stock.


- --------------------------------------------------------------------------------
Mid-Cap  Stocks
- --------------------------------------------------------------------------------

Mid-cap stocks have historically shown risk/return  characteristics  that are in
between  those of small- and  large-cap  stocks.  Their prices can rise and fall
substantially,   although  they  have  the  potential  to  offer   comparatively
attractive long-term returns.

Mid-caps are less widely followed on Wall Street than large-caps, which can make
it comparatively easier to find attractive stocks that are not overpriced.


- --------------------------------------------------------------------------------
Growth Investing
- --------------------------------------------------------------------------------

For  growth  investors,  the aim is to  invest  in  companies  that are  already
successful  but could be even more so.  Often,  these  stocks are in emerging or
rapidly  evolving  industries.  While many growth stocks are known to investors,
they may not yet have reached their full  potential.  The growth  investor looks
for reasons for continued success.

                               2 Growth Portfolio


<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money.

By  focusing  on mid-cap  stocks,  the  portfolio  is  subject  to their  risks,
including the risk its holdings  may:

o    fluctuate more widely in price than the market as a whole

o    underperform  other  types of stocks  when the market or the economy is not
     robust

o    fall in price or be difficult to sell during market downturns

Because the prices of most growth stocks are based on future expectations, these
stocks tend to be more  sensitive  than value  stocks to bad  economic  news and
negative earnings surprises.  While the prices of any type of stock can rise and
fall rapidly,  growth stocks in particular may underperform  during periods when
the market favors value stocks.

The portfolio's  performance may also suffer if certain stocks do not perform as
the  portfolio  managers  expected.  To the extent that the managers sell stocks
before they reach their market peak, the portfolio may miss out on opportunities
for higher  performance.  Through active trading,  the portfolio may have a high
turnover  rate,  which can mean lower  performance  due to  increased  brokerage
costs.


- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                               3 Growth Portfolio


<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year
- --------------------------------------------------------------------------------
     1989               29.47
     1990               -8.19
     1991               29.73
     1992                9.54
     1993                6.79
     1994               -4.99
     1995               31.73
     1996                9.14
     1997               29.01
     1998               15.53

o Best quarter: Q4 '98, up 27.07%    o Worst quarter: Q3 '98, down 21.39%
Year-to-date performance as of 3/31/99: down 3.27%

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


AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------
                                                  1 Year    5 Years     10 Years
- --------------------------------------------------------------------------------
Growth Portfolio                                   15.53      15.28       13.89
Russell Midcap Growth Index                        17.86      17.34       17.30
S&P 500 Index                                      28.52      24.02       19.16

The Russell Midcap Growth is an unmanaged index of U.S. mid-cap growth stocks.
The S&P 500 is an unmanaged index of U.S. stocks.
================================================================================

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of reference,  the table includes a broad-based  market index as well
as a more focused index of mid-cap growth stocks.  The  portfolio's  performance
figures  include  all of its  expenses;  the  indices  do not  include  costs of
investment.

Because the portfolio had a policy of investing in stocks of all capitalizations
and used a comparatively more  value-oriented  investment approach prior to July
1997,  its  performance  prior to that date would have been different if current
policies had been in effect.


                               4 Growth Portfolio


<PAGE>

<TABLE>
<CAPTION>
FINANCIAL HIGHLIGHTS
- ----------------------------------------------------------------------------------------------------

Year Ended December 31,                                       1994     1995    1996    1997    1998

- ----------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                          <C>      <C>     <C>     <C>     <C>  
        Share price (NAV)at beginning of year                24.28    20.31   25.86   25.78   30.54

Plus:   Income (loss) from investment operations
        Net investment income (loss)                          0.07     0.01   (0.07)  (0.03)  (0.10)
        Net gains/losses-- realized and unrealized           (1.11)    6.26    2.34    7.06    4.12
        Subtotal: income (loss) from investment operations   (1.04)    6.27    2.27    7.03    4.02

Minus:  Distributions to shareholders
        Income dividends                                      0.12     0.05    0.01      --      --
        Capital gain distributions                            2.81     0.67    2.34    2.27    8.27
        Subtotal: distributions to shareholders               2.93     0.72    2.35    2.27    8.27
                                                             ......................................
Equals: Share price (NAV) at end of year                     20.31    25.86   25.78   30.54   26.29

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they actually are as well as how they would have been if certain  expense offset
arrangements had not been in effect.

<S>                                                           <C>      <C>     <C>     <C>     <C> 
Net expenses--actual                                          0.84     0.90    0.92    0.90    0.92
Expenses(1)                                                     --     0.90    0.92    0.90    0.92
Net investment income (loss)--actual                          0.26     0.04   (0.30)  (0.11)  (0.41)


- ----------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

<S>                                                          <C>      <C>      <C>    <C>     <C>  
Total return(2) (%)                                          (4.99)   31.73    9.14   29.01   15.53
Net assets at end of year ($ x 1,000,000)                     369.3   537.8   566.4   583.7   616.4
Portfolio turnover rate (%)                                     46       --(3)   57     113      83
====================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(2)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(3)  Reflects  the  portfolio's  own  turnover  rate of 9%  prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 35% from that date on.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Jennifer K. Silver is a Vice  President of  Neuberger  Berman  Management  and a
principal of Neuberger Berman,  LLC. Currently the Director of the Growth Equity
Group,  she has been co-manager of the portfolio since joining the firm in 1997.
From 1981 to 1997, she was an analyst and a portfolio manager at another firm.

Brooke A. Cobb is a Vice President of Neuberger Berman  Management.  He has been
co-manager of the portfolio  since joining the firm in 1997.  From 1972 to 1997,
he was a portfolio manager at several other firms.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the  management/administration  fees paid to Neuberger  Berman  Management  were
0.83% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.


                               5 Growth Portfolio


<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
variable  insurance  contracts.  Because shares of the portfolio are held by the
insurance companies involved,  you will need to follow the instructions provided
by your insurance company for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts -- annuities and life  insurance,  groups
with different  interests  will share the  portfolio.  Due to differences of tax
treatment  and other  considerations  among these  shareholders,  it is possible
(although not likely) that the interests of the shareholders  might sometimes be
in conflict. In addition, the portfolio's  master/feeder structure could lead to
a conflict between the interests of the portfolio shareholders and the interests
of other investors in the master fund's series. For these reasons,  the trustees
of  the  portfolio  watch  for  the  existence  of any  material  irreconcilable
conflicts and will determine what action,  if any,  should be taken in the event
of a conflict. If there is a conflict, it is possible that to resolve it, one or
more  insurance  company  separate  accounts  might be compelled to withdraw its
investment in the  portfolio.  While this might  resolve the  conflict,  it also
might force the portfolio to sell securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance  company to find out by what time your  transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your insurance
company accepts transaction  requests,  it's possible that the portfolio's share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change  until  the  next  time it is  calculated.

- --------------------------------------------------------------------------------
Share  Price  Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio values equity  securities by using market prices,  and values debt
securities using bid quotations from  independent  pricing services or principal
market  makers.  The portfolio may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                               6 Growth Portfolio


<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Growth Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are  taxable,  if at all,  to the  extent  described  in your  variable
contract prospectus. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expenses
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract.


- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.


                               7 Growth Portfolio



<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an  investment  in the  portfolio.
Because the portfolio is offered through certain variable  insurance  contracts,
it is subject to special  diversification  standards  beyond those that normally
apply to mutual funds.  If the  underlying  assets of the portfolio fail to meet
the special  standards,  you could be subject to adverse tax consequences -- for
example, some of the income earned by the portfolio could generate a current tax
liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.


- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                               8 Growth Portfolio


<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC


==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180



- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.





[RECYCLE LOGO] NMARR5750599

SEC file number 811-425

<PAGE>


- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Limited Maturity Bond Portfolio Prospectus  May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed bond portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

Limited Maturity Bond Portfolio.......2


Your Investment

Buying and Selling Portfolio Shares...6

Share Prices..........................6

Portfolio Structure...................7

Distributions and Taxes...............7

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

<PAGE>

Neuberger Berman Advisers Management Trust
Limited Maturity Bond Portfolio
- --------------------------------------------------------------------------------

"Historically, limited maturity portfolios have been able to deliver much of the
 yield  available in the  investment-grade  bond market while  offering  reduced
 share price  fluctuation.  With this in mind, we strive to manage the portfolio
 with an emphasis on yield and risk management."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The  portfolio  seeks the  highest  available  current  income  consistent  with
liquidity and low risk to principal; total return is a secondary goal.

To pursue these goals, the portfolio  invests mainly in  investment-grade  bonds
and other debt securities from U.S. government and corporate issuers.  These may
include  mortgage-  and  asset-backed  securities.  To  enhance  yield  and  add
diversification,  the portfolio may invest up to 10% of net assets in securities
that are below investment  grade,  provided that, at the time of purchase,  they
are rated at least B by Moody's or Standard  and Poor's or, if unrated by either
of these, are believed by the manager to be of comparable quality.

The portfolio seeks to reduce credit risk by diversifying among many issuers and
different  types of  securities.  Although  it may invest in  securities  of any
maturity,  under normal circumstances it maintains an average portfolio duration
of four years or less. The managers monitor national trends in the corporate and
government  securities  markets,  including  a range of economic  and  financial
factors.

The managers look for securities that appear underpriced  compared to securities
of similar  structure and credit  quality,  and securities that appear likely to
have their  credit  ratings  raised.  In choosing  lower-rated  securities,  the
managers  look  for  bonds  from  issuers   whose   financial   health   appears
comparatively  strong but that are  smaller or less well known to  investors.

- --------------------------------------------------------------------------------
Duration
- --------------------------------------------------------------------------------

Duration  is a  measurement  of a bond  investment's  sensitivity  to changes in
interest  rates.  Typically,  with a 1% rise in interest  rates, an investment's
value may be expected to fall approximately 1% for each year of its duration.

- --------------------------------------------------------------------------------
Bond Ratings
- --------------------------------------------------------------------------------

Most large issuers obtain  ratings for their bonds from one or more  independent
rating agencies, although many bonds of all quality levels remain unrated.

Bonds in the top four  categories of credit  quality are  considered  investment
grade. Bonds in the fifth or sixth category (BB/Ba or B) are called lower-rated,
or  non-investment-grade.  Many of these  "junk  bonds" are  actually  issued by
reputable companies, and offer attractive yields.

                       2  Limited Maturity Bond Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most  of  the   portfolio's   performance   depends  on  what   happens  in  the
investment-grade  bond market.  The value of your investment will rise and fall,
and you could lose money.  The  portfolio's  yield and total  return will change
with interest rate movements.  When interest rates rise, the  portfolio's  share
price will typically fall.

The portfolio's  sensitivity to this risk will increase with any increase in the
fund's  duration.  A  downgrade  or  default  affecting  any of the  portfolio's
securities would affect the portfolio's  performance.  Performance could also be
affected if unexpected  interest rate trends cause the portfolio's  mortgage- or
asset-backed  securities  to be paid off  substantially  earlier  or later  than
expected.

Over time, the portfolio may produce a lower return than stock  investments  and
less conservative bond investments.  Although over the long term the portfolio's
average  performance  has outpaced  inflation,  it may not always do so. Through
active  trading,  the portfolio may have a high  turnover  rate,  which can mean
increased transaction costs. 

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

The use of certain  derivatives  to hedge  interest rate risk or produce  income
could  affect  portfolio  performance  if  the  derivatives  do not  perform  as
expected.

Foreign  securities  could  add to the ups and  downs in the  portfolio's  share
price,  because foreign  markets tend to be more volatile and currency  exchange
rates fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term  securities.  This could help the portfolio avoid losses but may mean
lost opportunities.


                       3  Limited Maturity Bond Portfolio
<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------

 1989    1990     1991     1992    1993     1994     1995    1996    1997   1998
- --------------------------------------------------------------------------------
10.77    8.32    11.34     5.18    6.63    -0.15    10.94    4.31    6.74   4.39

o Best quarter: Q2 '89, up 4.96%     o Worst quarter: Q1 '94, down 1.08%
Year-to-date performance as of 3/31/99: up 0.33%
================================================================================


AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                                  1 Year    5 Years     10 Years
- --------------------------------------------------------------------------------
Limited Maturity Bond Portfolio                     4.39      5.18        6.79
Merrill Lynch 1-3 Year Treasury Index               7.00      5.99        7.37

The  Merrill  Lynch  1-3  Year  Treasury  Index  is an  unmanaged  index of U.S.
Treasuries with maturities between 1 and 3 years.
================================================================================

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of  reference,  the table  includes a broad-based  market index.  The
portfolio's  performance figures include all of its expenses; the index does not
include costs of investment.

To obtain the portfolio's current yield, call 800.877.9700. The current yield is
the fund's net income over a recent 30-day period expressed as an annual rate of
return.

                       4  Limited Maturity Bond Portfolio
<PAGE>

<TABLE>
<CAPTION>
FINANCIAL HIGHLIGHTS
- ----------------------------------------------------------------------------------------------------

Year Ended December 31,                                       1994     1995    1996    1997    1998

- ----------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                          <C>      <C>     <C>     <C>     <C>  
        Share price (NAV)at beginning of year                14.66    14.02   14.71   14.05   14.12

Plus:   Income (loss) from investment operations                                                    
        Net investment income (loss)                          0.78     0.82    0.92    0.88    0.80 
        Net gains/losses-- realized and unrealized           (0.80)    0.65   (0.34)   0.02   (0.21)
        Subtotal: income (loss) from investment operations   (0.02)    1.47    0.58    0.90    0.59 

Minus:  Distributions to shareholders                                                               
        Income dividends                                      0.55     0.78    1.24    0.83    0.89 
        Capital gain distributions                            0.07      --      --      --      --  
        Subtotal: distributions to shareholders               0.62     0.78    1.24    0.83    0.89 
                                                             ......................................
Equals: Share price (NAV) at end of year                     14.02    14.71   14.05   14.12   13.82 

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they actually are as well as how they would have been if certain  expense offset
arrangements had not been in effect.

<S>                                                           <C>      <C>     <C>     <C>     <C> 
Net expenses--actual                                          0.66     0.71    0.78    0.77    0.76
Expenses(1)                                                    --      0.71    0.78    0.77    0.76
Net investment income (loss)--actual                          5.42     5.99    6.01    6.27    5.83

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

<S>                                                          <C>      <C>      <C>    <C>     <C>  
Total return(2) (%)                                          (0.15)   10.94     4.31   6.74    4.39 
Net assets at end of year ($ x 1,000,000)                    344.8    238.9    256.9  251.1   277.3  
Portfolio turnover rate (%)                                     90       --(3)   132     86      44 
====================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(2)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(3)  Reflects  the  portfolio's  own  turnover  rate of 9%  prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 35% from that date on.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Theodore  P.  Giuliano,  a Vice  President  and  Director  of  Neuberger  Berman
Management and a principal of Neuberger Berman, LLC, is the manager of the Fixed
Income  Group of Neuberger  Berman,  which he helped  establish in 1984.  He has
co-managed the portfolio since its inception.

Catherine  Waterworth,  a Vice  President of Neuberger  Berman  Management,  has
co-managed  the  portfolio  since joining the firm in December  1998.  She was a
managing  director of a major  investment firm from 1995-98 and a senior officer
at another firm prior to that.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the management/  administration  fees paid to Neuberger  Berman  Management were
0.65% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.


                       5  Limited Maturity Bond Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
variable  insurance  contracts.  Because shares of the portfolio are held by the
insurance companies involved,  you will need to follow the instructions provided
by your insurance company for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts -- annuities and life  insurance,  groups
with different  interests  will share the  portfolio.  Due to differences of tax
treatment  and other  considerations  among these  shareholders,  it is possible
(although not likely) that the interests of the shareholders  might sometimes be
in conflict. In addition, the portfolio's  master/feeder structure could lead to
a conflict between the interests of the portfolio shareholders and the interests
of other investors in the master fund's series. For these reasons,  the trustees
of  the  portfolio  watch  for  the  existence  of any  material  irreconcilable
conflicts and will determine what action,  if any,  should be taken in the event
of a conflict. If there is a conflict, it is possible that to resolve it, one or
more  insurance  company  separate  accounts  might be compelled to withdraw its
investment in the  portfolio.  While this might  resolve the  conflict,  it also
might force the portfolio to sell securities at disadvantageous prices.


SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance  company to find out by what time your  transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your insurance
company accepts transaction  requests,  it's possible that the portfolio's share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change  until  the  next  time it is  calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio  values debt  securities  using bid  quotations  from  independent
pricing services or principal market makers.  The portfolio may value short-term
securities with remaining maturities of less than 60 days at cost; these values,
when combined with interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                       6  Limited Maturity Bond Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Limited Maturity Bond Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are  taxable,  if at all,  to the  extent  described  in your  variable
contract prospectus. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expenses 
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract.

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                       7  Limited Maturity Bond Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an  investment  in the  portfolio.
Because the portfolio is offered through certain variable  insurance  contracts,
it is subject to special  diversification  standards  beyond those that normally
apply to mutual funds.  If the  underlying  assets of the portfolio fail to meet
the special  standards,  you could be subject to adverse tax consequences -- for
example, some of the income earned by the portfolio could generate a current tax
liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000
- --------------------------------------------------------------------------------

Issues Like other  mutual  funds,  the  portfolio  could be affected by problems
relating to the conversion of European currencies into the Euro beginning 1/1/99
and the ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                       8  Limited Maturity Bond Portfolio
<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC


==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180


- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.



[RECYCLE LOGO] NMARR5700599

SEC file number 811-425

<PAGE>

- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Balanced Portfolio Prospectus (For Qualified Plans) May 1, 1999

THIS PORTFOLIO:

o    is offered to qualified  pension and retirement  plans, and is also offered
     to life insurance  companies to serve as an investment  vehicle under their
     variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally stock and bond portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). 

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

Balanced Portfolio....................2


Your Investment

Buying and Selling Portfolio Shares...6

Share Prices..........................6

Portfolio Structure...................7

Distributions and Taxes...............7

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

<PAGE>

Neuberger Berman Advisers Management Trust
Balanced Portfolio
- --------------------------------------------------------------------------------

"By keeping most of the  portfolio's  assets  invested in the mid-cap segment of
 the stock market,  the portfolio  seeks  long-term  growth,  while  substantial
 investment in the  short-term  bond market has the potential to reduce risk and
 add to income."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio  seeks growth of capital and  reasonable  current  income  without
undue risk to principal.

To pursue these goals,  the  portfolio  allocates its assets  between  stocks --
primarily those of mid-capitalization  companies -- and short-term  fixed-income
securities from U.S.  government and corporate  issuers.  The portfolio seeks to
reduce  risk  by  diversifying   among  many  issuers  and  different  types  of
securities.

The  managers  may  allocate  anywhere  from  50%  to  70% of  assets  to  stock
investments,  with the balance  allocated to bond investments (at least 25%) and
operating cash. In determining the portfolio's allocation,  the managers consult
with senior management of the adviser and sub-adviser.

In selecting stocks, the managers look for fast-growing companies in emerging or
rapidly evolving industries whose characteristics may include one or more of the
following:

o  above-average growth of earnings

o  earnings that have exceeded analysts' expectations

o  financial strength

o  a strong competitive position

o  a reasonable stock price in light of the company's growth rate

The portfolio's fixed-income securities consist mainly of investment-grade bonds
and other debt securities from U.S.  government and corporate  issuers,  and may
include mortgage- and asset-backed securities. Although the portfolio may invest
in  securities  of any  maturity,  it normally  maintains  an average  portfolio
duration  of four  years or less.  In  selecting  fixed-income  securities,  the
managers monitor national trends,  looking for securities that appear relatively
underpriced or appear likely to have their credit ratings raised.

- --------------------------------------------------------------------------------
Asset Allocation
- --------------------------------------------------------------------------------

Studies of  performance  and  volatility  indicate that  balanced  portfolios of
stocks and fixed-income  securities can approach stock market  performance while
experiencing  lower volatility.  The first step in an allocation  strategy is to
determine how assets should be divided among  investment  categories.  Selecting
appropriate investments within those categories is a second step.

- --------------------------------------------------------------------------------
Mid-Cap Stocks
- --------------------------------------------------------------------------------

Mid-cap stocks have historically shown risk/return  characteristics  that are in
between  those of small- and  large-cap  stocks.  Their prices can rise and fall
substantially,   although  they  have  the  potential  to  offer   comparatively
attractive long-term returns.

Mid-caps are less widely followed on Wall Street than large-caps, which can make
it comparatively easier to find attractive stocks that are not overpriced.


                              2  Balanced Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the  portfolio's  performance  depends on what  happens in the stock and
bond markets.  The behavior of these markets is  unpredictable,  particularly in
the short term. The value of your  investment  will rise and fall, and you could
lose money.

By  focusing  on mid-cap  stocks,  the  portfolio  is  subject  to their  risks,
including the risk its holdings may:

o    fluctuate more widely in price than the market as a whole

o    underperform  other  types of stock when the  market or the  economy is not
     robust

o    fall in price or be difficult to sell during market downturns

Because  the prices of most growth  stocks may be based on future  expectations,
these stocks tend to be more  sensitive  than value stocks to bad economic  news
and negative earnings surprises.  While the prices of any type of stock can rise
and fall rapidly,  growth stocks in particular may  underperform  during periods
when the market favors value stocks. The portfolio's performance may also suffer
if certain  stocks do not perform as the  portfolio  managers  expected.  To the
extent that the managers  sell stocks  before they reach their market peak,  the
portfolio may miss out on opportunities for higher performance.

Most of the performance of the fixed-income  portion of the portfolio depends on
what happens in the  investment-grade  bond market. The portfolio's total return
on its fixed-income securities could be adversely affected by a rise in interest
rates.  Typically,  when interest rates rise, the portfolio's  underlying  bonds
will decline in price. The portfolio sensitivity to this risk will increase with
any increase in the portfolio's duration.

A credit  downgrade or default that affected any of the  portfolio's  securities
would adversely affect the portfolio's performance, as would unexpected interest
rate trends  that cause  mortgage-  or  asset-backed  securities  to be paid off
substantially earlier or later than expected.

The  portfolio's  performance  may also suffer if certain  investments  or asset
allocations do not perform as portfolio managers expected.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities  lending and derivatives  could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

The use of certain  derivatives  to hedge  interest rate risk or produce  income
could  affect  portfolio  performance  if  the  derivatives  do not  perform  as
expected.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

Through active trading,  the portfolio may have a high turnover rate,  which can
mean lower performance due to increased brokerage costs.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term  securities.  This could help the portfolio avoid losses but may mean
lost opportunities.

                              3  Balanced Portfolio
<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------

1989    1990    1991    1992    1993    1994     1995     1996    1997     1998
        1.95   22.68    8.06    6.45   -3.36    23.76     6.89   19.45    12.18
- --------------------------------------------------------------------------------

o Best quarter: Q4 '98, up 16.55%     o Worst quarter: Q3 '98, down 12.97%
Year-to-date performance as of 3/31/99: down 1.86%
================================================================================

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                                                          Since
                                                                      Inception
                                                   1 Year    5 Years    2/28/89
- --------------------------------------------------------------------------------

Balanced Portfolio                                 12.18      11.37       11.30
Russell Midcap Growth Index                        17.86      17.34       17.01
Merrill Lynch 1-3 Year Treasury Index               7.00       5.99        7.42
S&P 500 Index                                      28.52      24.02       19.06

The Russell Midcap Growth is an unmanaged index of U.S. mid-cap growth stocks.
The Merrill Lynch 1-3 Year Treasury Index is an unmanaged index of U.S. Treasury
securities.
The S&P 500 is an unmanaged index of U.S. stocks.
================================================================================


- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The information at left provides  different  measures of the  portfolio's  total
return.  Total return includes the effect of distributions as well as changes in
share price, if any should occur. The figures assume that all distributions were
reinvested in the portfolio.

As a frame of reference,  the table includes two  broad-based  market indices as
well  as a  more  focused  index  of  mid-cap  growth  stocks.  The  portfolio's
performance  figures  include  all of its  expenses;  the indices do not include
costs of investment.


INVESTOR EXPENSES
- --------------------------------------------------------------------------------

The portfolio charges no fees for buying,  selling, or exchanging shares, or for
maintaining  an  account.  Your  only  portfolio  cost is your  share of  annual
operating  expenses.  You may, however,  have additional  expenses in connection
with your qualified plan.

FEE TABLE
- --------------------------------------------------------------------------------

Shareholder fees                                                           None

- --------------------------------------------------------------------------------
Annual  operating  expenses (% of average net assets)*  
These are deducted from portfolio assets, so you pay them indirectly.

        Management/administration fees                                     0.85

Plus:   Distribution (12b-1) fees                                          none
        Other expenses                                                     0.18
                                                                           ....
Equals: Total annual operating expenses                                    1.03
================================================================================

EXPENSE EXAMPLE
- --------------------------------------------------------------------------------

The example  assumes that you invested  $10,000 for the periods shown,  that you
earned a  hypothetical  5% total  return  each  year,  and that the  portfolio's
expenses  were  unchanged.  Your costs  would be the same  whether you sold your
shares or continued to hold them at the end of each period.  Actual  performance
and expenses may be higher or lower.

                                       1 Year     3 Years   5 Years     10 Years
- --------------------------------------------------------------------------------
Expenses**                             $105         $328      $569       $1,259
================================================================================

*    The figures in the table are based on last year's expenses. Actual expenses
     this  year may be higher or lower.  The table  includes  costs  paid by the
     portfolio and its share of master  portfolio costs. For more information on
     master/feeder funds, see "Portfolio Structure".

**   Under the portfolio's expense  reimbursement  arrangement  described in the
     Statement  of  Additional  Information,  your  costs for the one-,  three-,
     five-, and ten-year periods would be the same as shown here.


                              4  Balanced Portfolio
<PAGE>

FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Year Ended December 31,                                       1994     1995    1996    1997    1998

- ----------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                          <C>      <C>     <C>     <C>     <C>  
        Share price (NAV)at beginning of year                15.62    14.51   17.52   15.92   17.80

Plus:   Income (loss) from investment operations                                                   
        Net investment income (loss)                          0.30     0.32    0.34    0.36    0.29
        Net gains/losses-- realized and unrealized           (0.80)    3.06    0.75    2.59    1.62
        Subtotal: income (loss) from investment operations   (0.50)    3.38    1.09    2.95    1.91

Minus:  Distributions to shareholders                                                                    
        Income dividends                                      0.23     0.28    0.41    0.30    0.42
        Capital gain distributions                            0.38     0.09    2.28    0.77    2.95
        Subtotal: distributions to shareholders               0.61     0.37    2.69    1.07    3.37
                                                             ......................................
Equals: Share price (NAV) at end of year                     14.51    17.52   15.92   17.80   16.34

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they actually are as well as how they would have been if certain  expense offset
arrangements had not been in effect.

<S>                                                           <C>      <C>     <C>     <C>     <C> 
Net expenses--actual                                          0.91     0.99    1.09    1.04    1.03
Expenses(1)                                                     --     0.99    1.09    1.04    1.03
Net investment income (loss)--actual                          1.91     1.99    1.84    2.07    1.84
                                                              
- ----------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

<S>                                                          <C>      <C>      <C>    <C>     <C>  
Total return(2) (%)                                          (3.36)   23.76     6.89  19.45   12.18
Net assets at end of year ($ x 1,000,000)                    179.3    144.4    173.2  161.9   177.6
Portfolio turnover rate (%)                                     55      --        87    103      71
====================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(2)  Reflects  the  portfolio's  own  turnover  rate of 21% prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 55% from that date on.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Theodore  P.  Giuliano,  a Vice  President  and  Director  of  Neuberger  Berman
Management and a principal of Neuberger Berman, LLC, is the manager of the Fixed
Income  Group of Neuberger  Berman,  which he helped  establish in 1984.  He has
co-managed the portfolio's debt securities investments since its inception.

Catherine  Waterworth,  a Vice  President of Neuberger  Berman  Management,  has
co-managed the portfolio's debt securities investments since joining the firm in
December  1998.  She was a managing  director  of a major  investment  firm from
1995-98 and a senior officer at another firm prior to that.

Jennifer K. Silver is a Vice  President of  Neuberger  Berman  Management  and a
principal of Neuberger Berman,  LLC. Currently the Director of the Growth Equity
Group,  she has been  co-manager of the  portfolio's  equity  investments  since
joining the firm in 1997.  From 1981 to 1997, she was an analyst and a portfolio
manager at another firm.

Brooke A. Cobb is a Vice President of Neuberger Berman  Management.  He has been
co-manager of the portfolio's equity investments since joining the firm in 1997.
From 1972 to 1997, he was a portfolio manager at several other firms.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the management/  administrative  fees paid to Neuberger  Berman  Management were
0.85% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.

                              5  Balanced Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
qualified plans. Because shares of the portfolio are held by the qualified plans
involved,  you will need to follow the  instructions  provided by your qualified
plan for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts  --annuities and life insurance -- and to
qualified plans, groups with different  interests will share the portfolio.  Due
to   differences  of  tax  treatment  and  other   considerations   among  these
shareholders,  it is possible  (although  not likely) that the  interests of the
shareholders  might  sometimes be in  conflict.  In  addition,  the  portfolio's
master/feeder  structure  could lead to a conflict  between the interests of the
portfolio shareholders and the interests of other investors in the master fund's
series. For these reasons, the trustees of the portfolio watch for the existence
of any material irreconcilable conflicts and will determine what action, if any,
should  be  taken in the  event of a  conflict.  If there is a  conflict,  it is
possible that to resolve it, one or more insurance  company separate accounts or
qualified  plans might be compelled to withdraw its investment in the portfolio.
While this might resolve the conflict, it also might force the portfolio to sell
securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your plan  administrator to find out by what time your transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your qualified
plan accepts  transaction  requests,  it's possible that the  portfolio's  share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change  until  the  next  time it is  calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio values equity  securities by using market prices,  and values debt
securities using bid quotations from  independent  pricing services or principal
market  makers.  The portfolio may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                              6  Balanced Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Balanced Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are taxable,  if at all, to the extent described in your qualified plan
documentation. Consult it for more information.

- --------------------------------------------------------------------------------
Qualified Plan Expenses
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees and expenses,  if any,  charged under your qualified  plan; for those fees,
you  will  need to see  your  qualified  plan  documentation.  

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                              7  Balanced Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations  -- Because the portfolio is offered  through
certain variable insurance contracts,  it is subject to special  diversification
standards  beyond those that normally  apply to mutual funds.  If the underlying
assets of the portfolio fail to meet the special standards,  a variable contract
owner could be subject to adverse tax  consequences -- for example,  some of the
income earned by the portfolio could generate a current tax liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                              8  Balanced Portfolio
<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


  Investment  manager:
  Neuberger Berman Management Inc.
  Sub-adviser:
  Neuberger  Berman, LLC

==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180



- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.





[RECYCLE LOGO] NMARR5740599

SEC file number 811-425

<PAGE>

- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Balanced Portfolio Prospectus May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts,  and is
     also offered to qualified pension and retirement plans

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed stock and bond portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

Balanced Portfolio....................2


Your Investment

Buying and Selling Portfolio Shares...6

Share Prices..........................6

Portfolio Structure...................7

Distributions and Taxes...............7

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

<PAGE>

Neuberger Berman Advisers Management Trust
Balanced Portfolio
- --------------------------------------------------------------------------------

"By keeping most of the  portfolio's  assets  invested in the mid-cap segment of
 the stock market,  the portfolio  seeks  long-term  growth,  while  substantial
 investment in the  short-term  bond market has the potential to reduce risk and
 add to income."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio  seeks growth of capital and  reasonable  current  income  without
undue risk to principal.

To pursue these goals,  the  portfolio  allocates its assets  between  stocks --
primarily those of mid-capitalization  companies -- and short-term  fixed-income
securities from U.S.  government and corporate  issuers.  The portfolio seeks to
reduce  risk  by  diversifying   among  many  issuers  and  different  types  of
securities.

The  managers  may  allocate  anywhere  from  50%  to  70% of  assets  to  stock
investments,  with the balance  allocated to bond investments (at least 25%) and
operating cash. In determining the portfolio's allocation,  the managers consult
with senior management of the adviser and sub-adviser.

In selecting stocks, the managers look for fast-growing companies in emerging or
rapidly evolving industries whose characteristics may include one or more of the
following:

o   above-average growth of earnings

o   earnings that have exceeded analysts' expectations

o   financial strength

o   a strong competitive position

o   a reasonable stock price in light of the company's growth rate

The portfolio's fixed-income securities consist mainly of investment-grade bonds
and other debt securities from U.S.  government and corporate  issuers,  and may
include mortgage- and asset-backed securities. Although the portfolio may invest
in  securities  of any  maturity,  it normally  maintains  an average  portfolio
duration  of four  years or less.  In  selecting  fixed-income  securities,  the
managers monitor national trends,  looking for securities that appear relatively
underpriced or appear likely to have their credit ratings raised.

- --------------------------------------------------------------------------------
Asset Allocation
- --------------------------------------------------------------------------------

Studies of  performance  and  volatility  indicate that  balanced  portfolios of
stocks and fixed-income  securities can approach stock market  performance while
experiencing  lower volatility.  The first step in an allocation  strategy is to
determine how assets should be divided among  investment  categories.  Selecting
appropriate investments within those categories is a second step.

- --------------------------------------------------------------------------------
Mid-Cap Stocks
- --------------------------------------------------------------------------------

Mid-cap stocks have historically shown risk/return  characteristics  that are in
between  those of small- and  large-cap  stocks.  Their prices can rise and fall
substantially,   although  they  have  the  potential  to  offer   comparatively
attractive long-term returns.

Mid-caps are less widely followed on Wall Street than large-caps, which can make
it comparatively easier to find attractive stocks that are not overpriced.


                              2  Balanced Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the  portfolio's  performance  depends on what  happens in the stock and
bond markets.  The behavior of these markets is  unpredictable,  particularly in
the short term. The value of your  investment  will rise and fall, and you could
lose money.

By  focusing  on mid-cap  stocks,  the  portfolio  is  subject  to their  risks,
including the risk its holdings may:

o    fluctuate more widely in price than the market as a whole

o    underperform  other  types of stock when the  market or the  economy is not
     robust

o    fall in price or be difficult to sell during market downturns

Because  the prices of most growth  stocks may be based on future  expectations,
these stocks tend to be more  sensitive  than value stocks to bad economic  news
and negative earnings surprises.  While the prices of any type of stock can rise
and fall rapidly,  growth stocks in particular may  underperform  during periods
when the market favors value stocks. The portfolio's performance may also suffer
if certain  stocks do not perform as the  portfolio  managers  expected.  To the
extent that the managers  sell stocks  before they reach their market peak,  the
portfolio may miss out on opportunities for higher performance.

Most of the performance of the fixed-income  portion of the portfolio depends on
what happens in the  investment-grade  bond market. The portfolio's total return
on its fixed-income securities could be adversely affected by a rise in interest
rates.  Typically,  when interest rates rise, the portfolio's  underlying  bonds
will decline in price. The portfolio sensitivity to this risk will increase with
any increase in the portfolio's duration.

A credit  downgrade or default that affected any of the  portfolio's  securities
would adversely affect the portfolio's performance, as would unexpected interest
rate trends  that cause  mortgage-  or  asset-backed  securities  to be paid off
substantially earlier or later than expected.

The  portfolio's  performance  may also suffer if certain  investments  or asset
allocations do not perform as portfolio managers expected.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities  lending and derivatives  could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

The use of certain  derivatives  to hedge  interest rate risk or produce  income
could  affect  portfolio  performance  if  the  derivatives  do not  perform  as
expected.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

Through active trading,  the portfolio may have a high turnover rate,  which can
mean lower performance due to increased brokerage costs.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term  securities.  This could help the portfolio avoid losses but may mean
lost opportunities.

                              3  Balanced Portfolio
<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------

1989    1990    1991    1992    1993     1994     1995     1996    1997     1998
        1.95   22.68    8.06    6.45    -3.36    23.76     6.89   19.45    12.18
- --------------------------------------------------------------------------------

o Best quarter: Q4 '98, up 16.55%     o Worst quarter: Q3 '98, down 12.97%
Year-to-date performance as of 3/31/99: down 1.86%
================================================================================

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                                                          Since
                                                                      Inception
                                                   1 Year    5 Years    2/28/89
- --------------------------------------------------------------------------------

Balanced Portfolio                                 12.18      11.37       11.30
Russell Midcap Growth Index                        17.86      17.34       17.01
Merrill Lynch 1-3 Year Treasury Index               7.00       5.99        7.42
S&P 500 Index                                      28.52      24.02       19.06

The Russell Midcap Growth is an unmanaged index of U.S. mid-cap growth stocks.
The Merrill Lynch 1-3 Year Treasury Index is an unmanaged index of U.S. Treasury
securities.
The S&P 500 is an unmanaged index of U.S. stocks.
================================================================================


- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The information at left provides  different  measures of the  portfolio's  total
return.  Total return includes the effect of distributions as well as changes in
share price, if any should occur. The figures assume that all distributions were
reinvested in the portfolio.

As a frame of reference,  the table includes two  broad-based  market indices as
well  as a  more  focused  index  of  mid-cap  growth  stocks.  The  portfolio's
performance  figures  include  all of its  expenses;  the indices do not include
costs of investment.


                              4  Balanced Portfolio
<PAGE>

FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Year Ended December 31,                                       1994     1995    1996    1997    1998

- ----------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                          <C>      <C>     <C>     <C>     <C>  
        Share price (NAV)at beginning of year                15.62    14.51   17.52   15.92   17.80

Plus:   Income (loss) from investment operations                                                   
        Net investment income (loss)                          0.30     0.32    0.34    0.36    0.29
        Net gains/losses-- realized and unrealized           (0.80)    3.06    0.75    2.59    1.62
        Subtotal: income (loss) from investment operations   (0.50)    3.38    1.09    2.95    1.91

Minus:  Distributions to shareholders                                                                    
        Income dividends                                      0.23     0.28    0.41    0.30    0.42
        Capital gain distributions                            0.38     0.09    2.28    0.77    2.95
        Subtotal: distributions to shareholders               0.61     0.37    2.69    1.07    3.37
                                                             ......................................
Equals: Share price (NAV) at end of year                     14.51    17.52   15.92   17.80   16.34

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they actually are as well as how they would have been if certain  expense offset
arrangements had not been in effect.

<S>                                                           <C>      <C>     <C>     <C>     <C> 
Net expenses--actual                                          0.91     0.99    1.09    1.04    1.03
Expenses(1)                                                     --     0.99    1.09    1.04    1.03
Net investment income (loss)--actual                          1.91     1.99    1.84    2.07    1.84
                                                              
- ----------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

<S>                                                          <C>      <C>      <C>    <C>     <C>  
Total return(2) (%)                                          (3.36)   23.76     6.89  19.45   12.18
Net assets at end of year ($ x 1,000,000)                    179.3    144.4    173.2  161.9   177.6
Portfolio turnover rate (%)                                     55       --(3)    87    103      71
====================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

(1)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(2)  Reflects  the  portfolio's  own  turnover  rate of 21% prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 55% from that date on.

(3)  Reflects the  portfolio's  own  turnowver  rate of 21% prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 55% from that date on.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Theodore  P.  Giuliano,  a Vice  President  and  Director  of  Neuberger  Berman
Management and a principal of Neuberger Berman, LLC, is the manager of the Fixed
Income  Group of Neuberger  Berman,  which he helped  establish in 1984.  He has
co-managed the
portfolio's debt securities investments since its inception.

Catherine  Waterworth,  a Vice  President of Neuberger  Berman  Management,  has
co-managed the portfolio's debt securities investments since joining the firm in
December  1998.  She was a managing  director  of a major  investment  firm from
1995-98 and a senior officer at another firm prior to that.

Jennifer K. Silver is a Vice  President of  Neuberger  Berman  Management  and a
principal of Neuberger Berman,  LLC. Currently the Director of the Growth Equity
Group,  she has been  co-manager of the  portfolio's  equity  investments  since
joining the firm in 1997.  From 1981 to 1997, she was an analyst and a portfolio
manager at another firm.

Brooke A. Cobb is a Vice President of Neuberger Berman  Management.  He has been
co-manager of the portfolio's equity investments since joining the firm in 1997.
From 1972 to 1997, he was a portfolio manager at several other firms.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the management/  administrative  fees paid to Neuberger  Berman  Management were
0.85% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.

                              5  Balanced Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
qualified plans. Because shares of the portfolio are held by the qualified plans
involved,  you will need to follow the  instructions  provided by your qualified
plan for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts  --annuities and life insurance -- and to
qualified plans, groups with different  interests will share the portfolio.  Due
to   differences  of  tax  treatment  and  other   considerations   among  these
shareholders,  it is possible  (although  not likely) that the  interests of the
shareholders  might  sometimes be in  conflict.  In  addition,  the  portfolio's
master/feeder  structure  could lead to a conflict  between the interests of the
portfolio shareholders and the interests of other investors in the master fund's
series. For these reasons, the trustees of the portfolio watch for the existence
of any material irreconcilable conflicts and will determine what action, if any,
should  be  taken in the  event of a  conflict.  If there is a  conflict,  it is
possible that to resolve it, one or more insurance  company separate accounts or
qualified  plans might be compelled to withdraw its investment in the portfolio.
While this might resolve the conflict, it also might force the portfolio to sell
securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your plan  administrator to find out by what time your transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your qualified
plan accepts  transaction  requests,  it's possible that the  portfolio's  share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change until the next time it is calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio values equity  securities by using market prices,  and values debt
securities using bid quotations from  independent  pricing services or principal
market  makers.  The portfolio may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                              6  Balanced Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Balanced Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are taxable,  if at all, to the extent described in your qualified plan
documentation. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expense
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract.

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                              7  Balanced Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations  -- Because the portfolio is offered  through
certain variable insurance contracts,  it is subject to special  diversification
standards  beyond those that normally  apply to mutual funds.  If the underlying
assets of the portfolio fail to meet the special standards,  a variable contract
owner could be subject to adverse tax  consequences -- for example,  some of the
income earned by the portfolio could generate a current tax liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                              8  Balanced Portfolio
<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC


==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180



- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.





[RECYCLE LOGO] NMARR5720599

SEC file number 811-425

<PAGE>

- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Partners Portfolio Prospectus  May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed stock portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

Partners Portfolio....................2


Your Investment

Buying and Selling Portfolio Shares...6

Share Prices..........................6

Portfolio Structure...................7

Distributions and Taxes...............7

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

<PAGE>

Neuberger Berman Advisers Management Trust
Partners Portfolio
- --------------------------------------------------------------------------------

"Our goal is to find companies that we believe are undervalued relative to their
 earnings potential,  where we see a gap between the actual price of a stock and
 its intrinsic  value in the  marketplace.  When a company grows in value and/or
 the valuation gap closes, the success of our strategy is realized."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks growth of capital.

To pursue this goal,  the portfolio  invests  mainly in common stocks of mid- to
large-capitalization   companies.   The  portfolio   seeks  to  reduce  risk  by
diversifying  among  many  companies  and  industries.  The  managers  look  for
well-managed companies whose stock prices are believed to be undervalued.

Factors in identifying these firms may include:

o   strong fundamentals

o   consistent cash flow

o   a sound track record through all phases of the market cycle

The managers  may also look for other  characteristics  in a company,  such as a
strong position  relative to competitors,  a high level of stock ownership among
management,  and a recent  sharp  decline in stock price that  appears to be the
result of a short-term market overreaction to negative news.

The portfolio  generally considers selling a stock when it reaches the managers'
target price, when it fails to perform as expected,  or when other opportunities
appear more attractive. The portfolio has the ability to change its goal without
shareholder approval, although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Mid- and Large-Cap Stocks
- --------------------------------------------------------------------------------

Large  companies are usually  well-established.  Compared to mid-cap  companies,
they may be less  responsive to change,  but their returns have  sometimes  lead
those of mid-cap companies, often with lower volatility.

Mid-cap  stocks  have  historically  performed  more like  small-caps  than like
large-caps. Their prices can rise and fall substantially, although they have the
potential to offer attractive long-term returns.

- --------------------------------------------------------------------------------
Value Investing
- --------------------------------------------------------------------------------

At any given time,  there are companies  whose stock prices are below the market
average,  based on earnings,  book value, or other financial measures. The value
investor  examines these  companies,  searching for those that may rise in price
when other investors begin to realize their worth. 


                              2  Partners Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money.

To the extent that the portfolio  emphasizes mid- or large-cap  stocks, it takes
on the  associated  risks.  Mid-cap  stocks  tend to be  somewhat  riskier  than
large-cap  stocks;  over time,  however,  large-cap stocks may perform better or
less well than mid-cap  stocks.  At any given time, one or both groups of stocks
may be out of favor with investors.  If the portfolio emphasizes either group of
stocks, its performance could suffer.

With a value approach, there is also the risk that stocks may remain undervalued
during a given period.  This may happen  because value stocks as a category lose
favor with investors compared to growth stocks or because the managers failed to
anticipate  which stocks or industries  would  benefit from  changing  market or
economic conditions.

To the extent that the managers sell stocks before they reach their market peak,
the  portfolio may miss out on  opportunities  for higher  performance.  Through
active  trading,  the portfolio may have a high  turnover  rate,  which can mean
lower  performance due to increased  brokerage costs.

- --------------------------------------------------------------------------------
Other Risks 
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                              3  Partners Portfolio
<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar chart below shows how the  portfolio's  performance  has varied from one
year to another.  The table below the chart shows what the return would equal if
you  averaged  out  actual  performance  over  various  lengths  of  time.  This
information  is  based on past  performance;  it's not a  prediction  of  future
results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------

1989     1990     1991     1992    1993     1994    1995     1996    1997   1998
- --------------------------------------------------------------------------------
                                                   36.47    29.57   31.25   4.21
- --------------------------------------------------------------------------------
o Best quarter: Q4 '98, up 15.64%      o Worst quarter: Q3 '98, down 14.96%
Year-to-date performance as of 3/31/99: up 1.90%
================================================================================


AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                                                        Since  
                                                                      Inception
                                                   1 Year              3/22/94 
- --------------------------------------------------------------------------------
Partners Portfolio                                  4.21                19.71
S&P 500 Index                                      28.52                25.13
Russell 1000 Value Index                           15.63                21.60

The S&P 500 and Russell 1000 Value are unmanaged indices of U.S. stocks.
================================================================================

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of reference,  the table includes  broad-based  market  indices.  The
portfolio's  performance figures include all of its expenses; the indices do not
include costs of investment.

                              4  Partners Portfolio
<PAGE>

FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Year Ended December 31,                                       1994(1)  1995    1996    1997    1998

- ----------------------------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

<S>                                                          <C>      <C>     <C>     <C>     <C>  
        Share price (NAV)at beginning of year                10.00     9.77   13.23   16.48   20.60

Plus:   Income (loss) from investment operations                                                   
        Net investment income (loss)                          0.03     0.11    0.10    0.12    0.20
        Net gains/losses -- realized and unrealized          (0.26)    3.43    3.69    4.82    0.73
        Subtotal: income (loss) from investment operations   (0.23)    3.54    3.79    4.94    0.93

Minus:  Distributions to shareholders                                                             
        Income dividends                                       --      0.01    0.04    0.05    0.08
        Capital gain distributions                             --      0.07    0.50    0.77    2.52
        Subtotal: distributions to shareholders                --      0.08    0.54    0.82    2.60
                                                             ......................................
Equals: Share price (NAV) at end of year                      9.77    13.23   16.48   20.60   18.93

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they actually are as well as how they would have been if certain  expense offset
arrangements had not been in effect.

<S>                                                           <C>      <C>     <C>     <C>     <C> 
Net expenses--actual                                          1.75(2)  1.09    0.95    0.86    0.84 
Expenses(3)                                                     --     1.09    0.95    0.86    0.84 
Net investment income (loss)--actual                          0.45(2)  0.97    0.60    0.60    1.04  

- ----------------------------------------------------------------------------------------------------
<CAPTION>
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

<S>                                                          <C>      <C>      <C>    <C>     <C>  
Total return(4) (%)                                         (2.30)(5) 36.47    29.57    31.25     4.21
Net assets at end of year ($ x 1,000,000)                     9.4     207.5    705.4  1,632.8  1,630.5
Portfolio turnover rate (%)                                    90        --(6)   118      106      148
======================================================================================================
</TABLE>

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Michael M. Kassen,  Robert I. Gendelman and S. Basu Mullick are Vice  Presidents
of Neuberger Berman Management. Kassen and Gendelman are principals of Neuberger
Berman,  LLC.  Kassen and Gendelman  have been  managers of the portfolio  since
1994,  Mullick since 1998.  Mullick was a portfolio manager at another firm from
1993 to 1998.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the  management/administration  fees paid to Neuberger  Berman  Management  were
0.78% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.

(1)  Period from 3/22/94 (beginning of operations) to 12/31/94.

(2)  Annualized.

(3)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.  This  calculation  is required for all periods  ending after
     9/1/95.

(4)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(5)  Not annualized.

(6)  Reflects  the  portfolio's  own  turnover  rate of 76% prior to the date it
     joined its master  series  (April  28,  1995),  and  reflects  the  series'
     turnover rate of 98% from that date on.


                              5  Partners Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
variable  insurance  contracts.  Because shares of the portfolio are held by the
insurance companies involved,  you will need to follow the instructions provided
by your insurance company for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts -- annuities and life  insurance,  groups
with different  interests  will share the  portfolio.  Due to differences of tax
treatment  and other  considerations  among these  shareholders,  it is possible
(although not likely) that the interests of the shareholders  might sometimes be
in conflict. In addition, the portfolio's  master/feeder structure could lead to
a conflict between the interests of the portfolio shareholders and the interests
of other investors in the master fund's series. For these reasons,  the trustees
of  the  portfolio  watch  for  the  existence  of any  material  irreconcilable
conflicts and will determine what action,  if any,  should be taken in the event
of a conflict. If there is a conflict, it is possible that to resolve it, one or
more  insurance  company  separate  accounts  might be compelled to withdraw its
investment in the  portfolio.  While this might  resolve the  conflict,  it also
might force the portfolio to sell securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance  company to find out by what time your  transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your insurance
company accepts transaction  requests,  it's possible that the portfolio's share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change until the next time it is calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio values equity  securities by using market prices,  and values debt
securities using bid quotations from  independent  pricing services or principal
market  makers.  The portfolio may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                              6  Partners Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Partners Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons  relating to costs or a change in investment  goal,  among others, a
feeder  portfolio  could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.

- --------------------------------------------------------------------------------
DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are  taxable,  if at all,  to the  extent  described  in your  variable
contract prospectus. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expenses 
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract.

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                              7  Partners Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an  investment  in the  portfolio.
Because the portfolio is offered through certain variable  insurance  contracts,
it is subject to special  diversification  standards  beyond those that normally
apply to mutual funds.  If the  underlying  assets of the portfolio fail to meet
the special  standards,  you could be subject to adverse tax consequences -- for
example, some of the income earned by the portfolio could generate a current tax
liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                              8  Partners Portfolio
<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC


==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180


- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.



[RECYCLE LOGO] NMARR5730599

SEC file number 811-425

<PAGE>

- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

International Portfolio Prospectus  May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed stock portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

International Portfolio...............2


Your Investment

Buying and Selling Portfolio Shares...5

Share Prices..........................5

Portfolio Structure...................6

Distributions and Taxes...............6

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

<PAGE>

Neuberger Berman Advisers Management Trust
International Portfolio
- --------------------------------------------------------------------------------

"In  identifying  attractive  stocks  from  among the many  thousands  currently
 available  outside the U.S.,  it's  important  to have a clear  strategy.  This
 portfolio  uses  a  combination  of  growth  and  value  criteria,  while  also
 considering larger scale economic factors."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks long-term growth of capital by investing primarily in common
stocks of foreign companies.

To pursue this goal, the portfolio  invests  mainly in foreign  companies of any
size, including companies in developed and emerging  industrialized markets. The
portfolio  defines a foreign  company  as one that is  organized  outside of the
United States and conducts the majority of its business abroad.

The  portfolio  seeks to reduce  risk by  diversifying  among  many  industries.
Although it has the flexibility to invest a significant portion of its assets in
one country or region,  it generally intends to remain  well-diversified  across
countries and geographical regions.

In picking  stocks,  the  manager  looks for  well-managed  companies  that show
potential  for  above-average  growth or whose stock  prices are  believed to be
undervalued. Factors in identifying these firms may include strong fundamentals,
such as  attractive  cash flows and balance  sheets,  as well as prices that are
reasonable in light of projected earnings growth. The manager also considers the
outlooks for various countries and regions around the world, examining economic,
market, social, and political conditions.

The portfolio has the ability to change its goal without  shareholder  approval,
although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Foreign Stocks
- --------------------------------------------------------------------------------

There are many promising  opportunities  for  investment  outside the U.S. These
foreign markets often respond to different factors, and therefore tend to follow
cycles that are different from each other.

For this reason,  many  investors  put a portion of their  portfolios in foreign
investments  as a way of gaining  further  diversification.  While foreign stock
markets can be risky,  investors gain an opportunity to add potential  long-term
growth.


                           2  International Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the  portfolio's  performance  depends on what happens in  international
stock markets.  The behavior of these markets is unpredictable,  particularly in
the short  term.  Because of this,  the value of your  investment  will rise and
fall, sometimes sharply, and you could lose money.

Foreign stocks are riskier than comparable U.S. stocks.  This is in part because
foreign markets are less developed and foreign governments, economies, laws, tax
codes and  securities  firms may be less stable.  There is also a higher  chance
that key  information  will be  unavailable,  incomplete,  or  inaccurate.  As a
result,  foreign stocks can fluctuate more widely in price than  comparable U.S.
stocks,  and they may also be less liquid.  These risks are generally greater in
emerging markets.  Over a given period of time,  foreign stocks may underperform
U.S. stocks -- sometimes for years. The portfolio could also underperform if the
manager invests in the wrong countries or regions.

Changes in currency  exchange rates bring an added  dimension of risk.  Currency
fluctuations could erase investment gains or add to investment losses.

To the extent that the portfolio invests in growth stocks or in value stocks, it
takes on the risks  associated  with both  types of  stocks.  Growth  stocks may
suffer more than value stocks  during market  downturns,  while value stocks may
remain  undervalued.  Either type of stock may  underperform  the other during a
given period.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.  The portfolio may use derivatives  for hedging and for  speculation.
Hedging  could reduce the  portfolio's  losses from currency  fluctuations,  but
could also reduce its gains.  A derivative  instrument  could fail to perform as
expected. Any speculative investment could cause a loss for the portfolio.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.


                           3  International Portfolio
<PAGE>

PERFORMANCE OF A
SIMILAR FUND
- --------------------------------------------------------------------------------

Because the portfolio had not commenced investment operations as of December 31,
1998, it does not have performance to report in this prospectus.

However, the portfolio has an investment objective,  policies,  limitations, and
strategies substantially similar to those of, and the same portfolio manager as,
another mutual fund managed by Neuberger Berman  Management called the Neuberger
Berman  International  Fund.  The  following  table shows  average  annual total
returns  for that  fund as well as the EAFE  Index,  which is  pertinent  to the
Neuberger Berman International Fund.

AVERAGE  ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                                                        Since  
                                                                      Inception
                                                   1 Year               6/15/94
- --------------------------------------------------------------------------------
Neuberger Berman International Fund                 2.35                9.45
EAFE Index                                         20.33                8.50

The EAFE is an unmanaged index of stocks from Europe,  Australasia,  and the Far
East.
================================================================================

The  performance  of Neuberger  Berman  International  Fund reflects that fund's
expense  ratio,  and does not  reflect  any  expenses  or charges  that apply to
variable  contracts.  Insurance  expenses and charges would reduce  performance.
Although the objective,  policies,  limitations  and strategies of the portfolio
are substantially  similar to that of the Neuberger Berman  International  Fund,
the portfolio is a distinct mutual fund and may have different  fees,  expenses,
investment returns,  portfolio holdings,  and risk/return  characteristics  than
Neuberger  Berman  International  Fund. The historical  performance of Neuberger
Berman  International  Fund  is not  indicative  of  future  performance  of the
portfolio.

This  performance  representation  relies on data suppplied by Neuberger  Berman
Management or derived by Neuberger Berman Management from statistical  services,
reports or other sources it believes to be reliable.

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Valerie Chang is an Assistant Vice President of Neuberger Berman Management.  In
1996 she joined the firm and became assistant manager of the portfolio.  She has
been the manager since 1997.  She began her career in 1990 in banking,  and from
1995 to 1996 was a senior securities analyst at another firm.

Benjamin E. Segal is an Assistant Vice President of Neuberger Berman  Management
and has been an Associate Manager of the portfolio since January 1999. He was an
assistant portfolio manager at another firm from 1997 to 1998. Prior to 1997, he
held positions in international finance and consulting.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide management and related services.

The  portfolio  pays the  following  fees to Neuberger  Berman  Management,  all
expressed as a  percentage  of the  portfolio's  average  daily net assets:  for
investment management,  0.85% of the first $250 million; 0.825% of the next $250
million; 0.80% of the next $250 million;  0.775% of the next $250 million; 0.75%
of the next $500 million;  and 0.725% on assets over $1.5 billion; and 0.30% for
administration.  The portfolio's management agreements are written contracts and
may be altered under certain  circumstances.  Neuberger  Berman  Management  has
voluntarily  agreed  to limit  the  portfolio's  expenses  when  certain  annual
operating  expenses of the portfolio exceed the agreed-upon  limit. This expense
limitation  agreement may be discontinued after it expires. See the Statement of
Additional Information for more details.

                           4  International Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
variable  insurance  contracts.  Because shares of the portfolio are held by the
insurance companies involved,  you will need to follow the instructions provided
by your insurance company for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts  --annuities  and life insurance,  groups
with different  interests  will share the  portfolio.  Due to differences of tax
treatment  and other  considerations  among these  shareholders,  it is possible
(although not likely) that the interests of the shareholders  might sometimes be
in conflict. In addition, the portfolio's  master/feeder structure could lead to
a conflict between the interests of the portfolio shareholders and the interests
of other investors in the master fund's series. For these reasons,  the trustees
of  the  portfolio  watch  for  the  existence  of any  material  irreconcilable
conflicts and will determine what action,  if any,  should be taken in the event
of a conflict. If there is a conflict, it is possible that to resolve it, one or
more  insurance  company  separate  accounts  might be compelled to withdraw its
investment in the  portfolio.  While this might  resolve the  conflict,  it also
might force the portfolio to sell securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance  company to find out by what time your  transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your insurance
company accepts transaction  requests,  it's possible that the portfolio's share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change until the next time it is calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio values equity  securities by using market prices,  and values debt
securities using bid quotations from  independent  pricing services or principal
market  makers.  The portfolio may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                           5  International Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the International Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are  taxable,  if at all,  to the  extent  described  in your  variable
contract prospectus. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expenses 
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract.

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                           6  International Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an  investment  in the  portfolio.
Because the portfolio is offered through certain variable  insurance  contracts,
it is subject to special  diversification  standards  beyond those that normally
apply to mutual funds.  If the  underlying  assets of the portfolio fail to meet
the special  standards,  you could be subject to adverse tax consequences -- for
example, some of the income earned by the portfolio could generate a current tax
liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                           7  International Portfolio
<PAGE>


FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC


==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180


- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.



[RECYCLE LOGO] NMARR5860599

SEC file number 811-425

<PAGE>

- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Guardian Portfolio Prospectus  May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed stock portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

Guardian Portfolio....................2


Your Investment

Buying and Selling Portfolio Shares...6

Share Prices..........................6

Portfolio Structure...................7

Distributions and Taxes...............7

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

<PAGE>

Neuberger Berman Advisers Management Trust
Guardian Portfolio
- --------------------------------------------------------------------------------

"We look for established  companies whose intrinsic  value, by our measure,  has
 yet to be discovered by the majority of investors.  In managing overall risk, a
 conscious  effort  is  made  to  determine  the  risk/reward  scenario  of each
 individual holding as well as its impact at the portfolio level."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks long-term  growth of capital;  current income is a secondary
goal.

To pursue  these  goals,  the  portfolio  invests  mainly  in  common  stocks of
large-capitalization   companies.   Because  the  managers  tend  to  find  that
undervalued  stocks may be more  common in certain  sectors of the  economy at a
given time, the portfolio may emphasize those sectors.

The  portfolio  seeks to reduce  risk by  diversifying  among a large  number of
companies across many different industries and economic sectors, and by managing
its overall exposure to a wide variety of risk factors.

The managers look for well-managed companies whose stock prices are undervalued.

Factors  in  identifying  these  firms may  include:  

o    solid balance sheets

o    above-average returns

o    low price-to-earnings ratios

o    consistent earnings

The portfolio managers consider portfolio level risk management when they choose
investments.  They do this by evaluating whether there is a buildup of different
types of risk in the portfolio due to interrelationship of investments.  Through
this process,  the managers  attempt to identify  whether the  portfolio,  while
diversified,  is  comprised  of  industries  and sectors that may be affected by
common external factors.

The portfolio has the ability to change its goal without  shareholder  approval,
although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Large-Cap Stocks
- --------------------------------------------------------------------------------

Large  companies  are  usually  well-established.  They  may have a  variety  of
products  and  business  lines  and a sound  financial  base  that can help them
weather bad times.

Compared to smaller companies, large companies can be less responsive to changes
and opportunities.  At the same time, their returns have sometimes lead those of
smaller companies, often with lower volatility.

- --------------------------------------------------------------------------------
Value Investing
- --------------------------------------------------------------------------------

At any given time,  there are companies  whose stock prices are below the market
average,  based on earnings,  book value, or other financial measures. The value
investor  examines these  companies,  searching for those that may rise in price
when other investors begin to realize their worth.


                              2  Guardian Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money.

At times,  large-cap stocks may lag other types of stocks in performance,  which
could cause the  portfolio to perform less well than certain other mutual funds.
While they may at times be less risky than small-cap  stocks,  large-cap  stocks
may perform better or less well over time.

To the extent that a value approach  dictates an emphasis on certain  sectors of
the  market at any  given  time,  the  portfolio's  performance  is likely to be
disproportionately affected by the economic, market, and other developments that
may influence those sectors.  The  portfolio's  performance may also suffer if a
sector does not perform as the portfolio managers expected.

With a value approach, there is also the risk that stocks may remain undervalued
during a given period.  This may happen  because value stocks as a category lose
favor with investors compared to growth stocks or because the managers failed to
anticipate  which stocks or industries  would  benefit from  changing  market or
economic conditions.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

In using  certain  derivatives  to gain stock  market  exposure  for excess cash
holdings,  the  portfolio  increases  its  risk of loss.  Although  they may add
diversification, foreign securities can be riskier, because foreign markets tend
to be more volatile and currency exchange rates fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                              3  Guardian Portfolio
<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar  chart  below  shows the  portfolio's  performance  for its  first  full
calendar year. The table below the chart compares the portfolio's return to that
of a broad-based  market index.  This information is based on past  performance;
it's not a prediction of future results.

  [THE FOLLOWING DATA WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------

1989    1990    1991    1992    1993     1994     1995     1996    1997     1998
                                                                           31.67
- --------------------------------------------------------------------------------

o Best quarter: Q1 '98, up 31.76%     o Worst quarter: Q3 '98, down 22.27%
Year-to-date performance as of 3/31/99: up 4.49%

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

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                                                        Since   
                                                                      Inception 
                                                  1 Year               11/3/97  
- --------------------------------------------------------------------------------
Guardian Portfolio                                 31.67                32.20
S&P 500 Index                                      28.52                31.14
Russell 1000 Value Index                           15.63                20.62

The S&P 500 and the Russell 1000 Value are unmanaged indices of U.S. stocks.
================================================================================

- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of reference,  the table includes  broad-based  market  indices.  The
portfolio's  performance figures include all of its expenses; the indices do not
include costs of investment.


                              4  Guardian Portfolio
<PAGE>

FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

Year Ended December 31,                                      1997(1)   1998

- --------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

        Share price (NAV)at beginning of year                 10.00    10.52   

Plus:   Income (loss) from investment operations                              
        Net investment income (loss)                           0.01     0.11   
        Net gains/losses -- realized and unrealized            0.51     3.22(2)
        Subtotal: income (loss) from investment operations     0.52     3.33   

Minus:  Distributions to shareholders                                         
        Income dividends                                        --      0.01   
        Subtotal: distributions to shareholders                 --      0.01   
                                                              ..............
Equals: Share price (NAV) at end of year                      10.52    13.84   

- --------------------------------------------------------------------------------
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they actually are as well as how they would have been if certain  expense offset
arrangements had not been in effect.

Net expenses--actual                                           1.00(3)  1.00 
Gross expenses(4)                                             30.06(3)  1.14 
Expenses(5)                                                    1.06(3)  1.00 
Net investment income (loss)--actual                           0.98(3)  0.80 
                                                              
- --------------------------------------------------------------------------------
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

Total return(6) (%)                                            5.20(7) 31.67
Net assets at end of year ($ x 1,000,000)                       0.6     74.1
Portfolio turnover rate (%)                                      12      197
================================================================================

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).

- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Kevin L. Risen and Allan R. White III are Vice  Presidents  of Neuberger  Berman
Management  and  principals of Neuberger  Berman,  LLC. Risen has co-managed the
portfolio's assets since its inception. He joined Neuberger Berman in 1992 as an
analyst,  and has been a portfolio manager since 1995. White has been co-manager
of the portfolio  since  September  1998,  when he joined the firm. From 1989 to
1998 he was a portfolio manager at another firm.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the  management/administration  fees paid to Neuberger  Berman  Management  were
0.85% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.

(1)  Period from 11/3/97 (beginning of operations) to 12/31/97.

(2)  May not accord with the change in aggregate  gains and losses in securities
     for the fiscal  period  because of the timing of sales and  repurchases  of
     portfolio shares in relation to fluctuating market values of the portfolio.

(3)  Annualized.

(4)  Shows  what  this  ratio  would  have  been if there  had  been no  expense
     reimbursement.

(5)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.

(6)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(7)  Not annualized.

                              5  Guardian Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
variable  insurance  contracts.  Because shares of the portfolio are held by the
insurance companies involved,  you will need to follow the instructions provided
by your insurance company for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts  --annuities  and life insurance,  groups
with different  interests  will share the  portfolio.  Due to differences of tax
treatment  and other  considerations  among these  shareholders,  it is possible
(although not likely) that the interests of the shareholders  might sometimes be
in conflict. In addition, the portfolio's  master/feeder structure could lead to
a conflict between the interests of the portfolio shareholders and the interests
of other investors in the master fund's series. For these reasons,  the trustees
of  the  portfolio  watch  for  the  existence  of any  material  irreconcilable
conflicts and will determine what action,  if any,  should be taken in the event
of a conflict. If there is a conflict, it is possible that to resolve it, one or
more  insurance  company  separate  accounts  might be compelled to withdraw its
investment in the  portfolio.  While this might  resolve the  conflict,  it also
might force the portfolio to sell securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance  company to find out by what time your  transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your insurance
company accepts transaction  requests,  it's possible that the portfolio's share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change until the next time it is calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio values equity  securities by using market prices,  and values debt
securities using bid quotations from  independent  pricing services or principal
market  makers.  The portfolio may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                              6  Guardian Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Guardian Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are  taxable,  if at all,  to the  extent  described  in your  variable
contract prospectus. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expenses 
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract. 

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                              7  Guardian Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an  investment  in the  portfolio.
Because the portfolio is offered through certain variable  insurance  contracts,
it is subject to special  diversification  standards  beyond those that normally
apply to mutual funds.  If the  underlying  assets of the portfolio fail to meet
the special  standards,  you could be subject to adverse tax consequences -- for
example, some of the income earned by the portfolio could generate a current tax
liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000. 

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                              8  Guardian Portfolio
<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC


==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180


- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.



[RECYCLE LOGO] NMARR5770599

SEC file number 811-425

<PAGE>

- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Mid-Cap Growth Portfolio Prospectus  May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed stock portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

Mid-Cap Growth Portfolio..............2


Your Investment

Buying and Selling Portfolio Shares...6

Share Prices..........................6

Portfolio Structure...................7

Distributions and Taxes...............7

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

<PAGE>

Neuberger Berman Advisers Management Trust
Mid-Cap Growth Portfolio
- --------------------------------------------------------------------------------

 "We want to own today's  leading  mid-cap  companies that have the potential to
  become  tomorrow's  Fortune 500. To do this, we screen for financially  sound,
  high growth companies in emerging or rapidly evolving  industries that possess
  records of sustained profitability.  We also look for companies with a history
  of positive earnings surprises that we expect will continue for some time."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The portfolio seeks growth of capital.

To  pursue  this  goal,  the  portfolio  invests  mainly  in  common  stocks  of
mid-capitalization companies. The portfolio seeks to reduce risk by diversifying
among  many  companies  and  industries.  The  managers  look  for  fast-growing
companies that are in emerging or rapidly evolving industries.

Factors in identifying these firms may include:

o    above-average growth of earnings

o    earnings that have exceeded analysts' expectations

The  managers  may also look for other  characteristics  in a  company,  such as
financial strength,  a strong position relative to competitors and a stock price
that  is  reasonable  in  light  of its  growth  rate.  The  managers  follow  a
disciplined  selling  strategy,  and may drop a stock from the portfolio when it
reaches a target price, fails to perform as expected,  or appears  substantially
less desirable than another stock.

The portfolio has the ability to change its goal without  shareholder  approval,
although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Mid-Cap Stocks
- --------------------------------------------------------------------------------

Mid-cap stocks have historically shown risk/return  characteristics  that are in
between  those of small- and  large-cap  stocks.  Their prices can rise and fall
substantially,   although  they  have  the  potential  to  offer   comparatively
attractive long-term returns.

Mid-caps are less widely followed on Wall Street than large-caps, which can make
it comparatively easier to find attractive stocks that are not overpriced.


- --------------------------------------------------------------------------------
Growth Investing
- --------------------------------------------------------------------------------

For  growth  investors,  the aim is to  invest  in  companies  that are  already
successful  but could be even more so.  Often,  these  stocks are in emerging or
rapidly  evolving  industries.  While many growth stocks are known to investors,
they may not yet have reached their full potential.

                           2  Mid-Cap Growth Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money. By focusing on mid-cap  stocks,  the portfolio is subject to their risks,
including the risk its holdings may:

o    fluctuate more widely in price than the market as a whole

o    underperform  other  types of stocks  when the market or the economy is not
     robust

o    fall in price or be difficult to sell during market downturns

Because the prices of most growth stocks are based on future expectations, these
stocks tend to be more  sensitive  than value  stocks to bad  economic  news and
negative earnings surprises.  While the prices of any type of stock can rise and
fall rapidly,  growth stocks in particular may underperform  during periods when
the market favors value stocks.

The portfolio's  performance may also suffer if certain stocks do not perform as
the  portfolio  managers  expected.  To the extent that the managers sell stocks
before they reach their market peak, the portfolio may miss out on opportunities
for higher  performance.  Through active trading,  the portfolio may have a high
turnover  rate,  which can mean lower  performance  due to  increased  brokerage
costs.  

- --------------------------------------------------------------------------------
Other Risks 
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                           3  Mid-Cap Growth Portfolio
<PAGE>

PERFORMANCE
- --------------------------------------------------------------------------------

The bar  chart  below  shows the  portfolio's  performance  for its  first  full
calendar year. The table below the chart compares the portfolio's return to that
of a broad-based  market index.  This information is based on past  performance;
it's not a prediction of future results.

  [THE FOLLOWING TABLE WAS REPRESENTED BY A BAR CHART IN THE PRINTED MATERIAL.]

YEAR-BY-YEAR % RETURNS as of 12/31 each year 
- --------------------------------------------------------------------------------

1989    1990     1991     1992     1993     1994    1995    1996    1997    1998
- --------------------------------------------------------------------------------
                                                                           39.28
- --------------------------------------------------------------------------------
o Best quarter: Q4 '98, up 32.73%   o Worst quarter: Q3 '98, down 16.76%
Year-to-date performance as of 3/31/99: down 3.04%
================================================================================


AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                                                        Since  
                                                                      Inception
                                                   1 Year              11/3/97 
- --------------------------------------------------------------------------------
Mid-Cap Growth Portfolio                           39.28               52.18
S&P 400/BARRA Growth Index                         34.86               31.64

The S&P MidCap  400/BARRA  Growth  Index is an unmanaged  index of U.S.  mid-cap
growth stocks.
================================================================================


- --------------------------------------------------------------------------------
Performance Measures
- --------------------------------------------------------------------------------

The  information  on this page provides  different  measures of the  portfolio's
total  return.  Total  return  includes the effect of  distributions  as well as
changes  in  share  price.  The  figures  assume  that  all  distributions  were
reinvested in the portfolio.

As a frame of  reference,  the table  includes  a  broad-based  market  index of
mid-cap growth stocks.  The portfolio's  performance  figures include all of its
expenses; the index does not include costs of investment.

                           4  Mid-Cap Growth Portfolio
<PAGE>

FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

Year Ended December 31,                                         1997(1)   1998

- --------------------------------------------------------------------------------
Per-share data ($)

Data have  been  computed  based on the  average  number  of shares  outstanding
throughout each year indicated. You can see what the portfolio earned (or lost),
what it distributed to investors, and how its share price changed.

        Share price (NAV)at beginning of year                    10.00    11.72

Plus:   Income from investment operations
        Net investment income (loss)                              0.01    (0.03)
        Net gains/losses-- realized and unrealized                1.71     4.61 
        Subtotal: income from investment operations               1.72     4.58

Minus:  Distributions to shareholders
        Income dividends                                           --      0.01
        Capital gain distributions                                 --      0.07
        Subtotal: distributions to shareholders                    --      0.08
                                                                 ..............
Equals: Share price (NAV) at end of year                         11.72    16.22

- --------------------------------------------------------------------------------
Ratios (% of average net assets)

The ratios show the portfolio's  expenses and net investment  income (loss),  as
they  actually  are as well as how  they  would  have  been if  certain  expense
reimbursement and offset arrangements had not been in effect.

Net expenses -- actual                                            1.00(2)  1.00
Gross expenses(3)                                                17.73(2)  1.43
Expenses(4)                                                       1.05(2)  1.00
Net investment income (loss)-- actual                             0.83(2) (0.20)

- --------------------------------------------------------------------------------
Other data

Total return shows how an investment in the portfolio  would have performed over
each period,  assuming all  distributions  were  reinvested.  The turnover  rate
reflects how actively the portfolio bought and sold securities.

Total return(5) (%)                                              17.20(6) 39.28
Net assets at end of year ($ x 1,000,000)                          1.7     31.0
Portfolio turnover rate (%)                                         20      106
================================================================================

The  figures  above  have been  audited by Ernst & Young  LLP,  the  portfolio's
independent auditors. Their report, and full financial statements, appear in the
portfolio's most recent shareholder report (see back cover).


- --------------------------------------------------------------------------------
Management
- --------------------------------------------------------------------------------

Jennifer K. Silver is a Vice  President of  Neuberger  Berman  Management  and a
principal of Neuberger Berman,  LLC. Currently the Director of the Growth Equity
Group,  she has been co-manager of the portfolio since its inception.  From 1981
to 1997, she was an analyst and a portfolio manager at another firm.

Brooke A. Cobb is a Vice President of Neuberger Berman  Management.  He has been
co-manager of the  portfolio  since its  inception.  From 1972 to 1997, he was a
portfolio manager at several other firms.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide  management and related  services.  For the 12 months ended 12/31/98,
the  management/administration  fees paid to Neuberger  Berman  Management  were
0.85% of average daily net assets.

The  portfolio's  management  agreements  are contracts and may be altered under
certain  circumstances.  Neuberger  Berman  Management  has  agreed to limit the
portfolio's  annual operating  expenses when certain expenses exceed a specified
limit.  This agreement is voluntary and may be terminated.  See the Statement of
Additional Information for more details.

(1)  Period from 11/3/97 (beginning of operations) to 12/31/97.

(2)  Annualized.  

(3)  Shows  what  this  ratio  would  have  been if there  had  been no  expense
     reimbursement.

(4)  Shows what  expenses  would  have been if there had been no expense  offset
     arrangements.

(5)  Does not reflect  charges  and other  expenses  that apply to the  separate
     account or the related insurance policies.

(6)  Not annualized.

                           5  Mid-Cap Growth Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES
- --------------------------------------------------------------------------------

The  portfolio  described  in this  prospectus  is designed for use with certain
variable  insurance  contracts.  Because shares of the portfolio are held by the
insurance companies involved,  you will need to follow the instructions provided
by your insurance company for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts  --annuities  and life insurance,  groups
with different  interests  will share the  portfolio.  Due to differences of tax
treatment  and other  considerations  among these  shareholders,  it is possible
(although not likely) that the interests of the shareholders  might sometimes be
in conflict. In addition, the portfolio's  master/feeder structure could lead to
a conflict between the interests of the portfolio shareholders and the interests
of other investors in the master fund's series. For these reasons,  the trustees
of  the  portfolio  watch  for  the  existence  of any  material  irreconcilable
conflicts and will determine what action,  if any,  should be taken in the event
of a conflict. If there is a conflict, it is possible that to resolve it, one or
more  insurance  company  separate  accounts  might be compelled to withdraw its
investment in the  portfolio.  While this might  resolve the  conflict,  it also
might force the portfolio to sell securities at disadvantageous prices.


SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance  company to find out by what time your  transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your insurance
company accepts transaction  requests,  it's possible that the portfolio's share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change  until  the  next  time it is  calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio values equity  securities by using market prices,  and values debt
securities using bid quotations from  independent  pricing services or principal
market  makers.  The portfolio may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.


                           6  Mid-Cap Growth Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Mid-Cap Growth Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.


DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are  taxable,  if at all,  to the  extent  described  in your  variable
contract prospectus. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expenses 
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract. 

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                           7  Mid-Cap Growth Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an  investment  in the  portfolio.
Because the portfolio is offered through certain variable  insurance  contracts,
it is subject to special  diversification  standards  beyond those that normally
apply to mutual funds.  If the  underlying  assets of the portfolio fail to meet
the special  standards,  you could be subject to adverse tax consequences -- for
example, some of the income earned by the portfolio could generate a current tax
liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.


- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                           8  Mid-Cap Growth Portfolio
<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC


==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180


- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.



[RECYCLE LOGO] NMARR5760599

SEC file number 811-425

<PAGE>


- ----------------------------------------------------------------================
                                                                Neuberger Berman
                                                                ================
Neuberger Berman
Advisers Management Trust
- --------------------------------------------------------------------------------

Socially Responsive Portfolio Prospectus  May 1, 1999

THIS PORTFOLIO:

o    is offered to life  insurance  companies to serve as an investment  vehicle
     under their variable annuity and variable life insurance contracts

o    is designed for investors with long-term goals in mind

o    offers you the  opportunity to participate in financial  markets  through a
     professionally managed stock portfolio

o    uses a master/feeder  structure;  see "Portfolio Structure" for information
     on how it works

o    carries  certain  risks,  including  the risk that you could  lose money if
     portfolio shares are worth less than what you paid

o    is  a  mutual  fund,  not  a  bank  deposit,   and  is  not  guaranteed  or
     insured

Portfolio Management

All of the Neuberger Berman Advisers  Management Trust Portfolios are managed by
Neuberger Berman Management Inc., in conjunction with Neuberger Berman,  LLC, as
sub-adviser. Together, the firms manage more than $55 billion in total assets as
of 12/31/98 and continue an asset management history that began in 1939.

Risk Information

In certain cases, the investments for the Neuberger  Berman Advisers  Management
Trust  Portfolios  are  managed by the same  individuals  who manage one or more
other  Neuberger  Berman mutual funds that have similar names,  objectives,  and
investment  styles as a portfolio.  You should be aware that the  portfolios are
likely to differ from these other mutual funds in size,  cash flow pattern,  and
tax matters.  Accordingly,  the holdings and performance of these portfolios can
be  expected  to vary from  those of the other  mutual  funds.  

This prospectus  discusses  principal  risks of investment in portfolio  shares.
These and other risks are  discussed in detail in the  Statement  of  Additional
Information (see back cover). If you are buying a variable contract,  you should
also read the contract's prospectus.

The Securities and Exchange Commission does not say whether any mutual fund is a
good or bad investment or whether the  information in any prospectus is accurate
or  complete.  It  is  unlawful  for  anyone  to  indicate  otherwise.

Contents
- ---------------------------------------

The Portfolio

Socially Responsive Portfolio.........2


Your Investment

Buying and Selling Portfolio Shares...5

Share Prices..........................5

Portfolio Structure...................6

Distributions and Taxes...............6

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

<PAGE>

Neuberger Berman Advisers Management Trust
Socially Responsive Portfolio
- --------------------------------------------------------------------------------

"We believe that sound  practices in areas like  employment and the  environment
 can have a positive  impact on a company's  bottom line.  We look for companies
 that meet value  investing  criteria  and also show a  commitment  to uphold or
 improve their standards of corporate citizenship."

GOAL & STRATEGY
- --------------------------------------------------------------------------------

The  portfolio  seeks  long-term  growth of capital by  investing  primarily  in
securities of companies that meet the portfolio's  financial criteria and social
policy.

To pursue this goal,  the portfolio  invests  mainly in common stocks of mid- to
large-capitalization  companies. The portfolio seeks to reduce risk by investing
in a large number of companies  across many different  industries.  The managers
initially  screen  companies  using  value  investing  criteria.  They  look for
undervalued companies with solid balance sheets,  strong management,  consistent
cash flows, and other value-related factors.

Among companies that meet these criteria,  the managers look for those that show
leadership in three areas:

o  environmental concerns

o  diversity in the work force

o  progressive employment and workplace practices

The managers  typically also look at a company's record in public health and the
nature of its products.  The managers judge firms on their corporate citizenship
overall, considering their accomplishments as well as their goals.

While these judgments are inevitably subjective, the portfolio has a strict
policy of avoiding  companies  that receive more than 5% of their  earnings from
alcohol,  tobacco,  gambling,  or  weapons,  as  well  as  companies  that  sell
non-consumer products to the military or are involved in nuclear power.

The portfolio has the ability to change its goal without  shareholder  approval,
although it does not currently intend to do so.

- --------------------------------------------------------------------------------
Social Investing
- --------------------------------------------------------------------------------

Portfolios  that follow social  policies seek  something in addition to economic
success.  They are  designed to allow  investors  to put their money to work and
also support companies that follow principles of good corporate citizenship.

- --------------------------------------------------------------------------------
Value Investing
- --------------------------------------------------------------------------------

At any given time,  there are companies  whose stock prices are below the market
average,  based on earnings,  book value, or other financial measures. The value
investor  examines these  companies,  searching for those that may rise in price
when other investors begin to realize their worth.

                         2  Socially Responsive Portfolio
<PAGE>

MAIN RISKS
- --------------------------------------------------------------------------------

Most of the portfolio's performance depends on what happens in the stock market.
The market's behavior is unpredictable,  particularly in the short term. Because
of this,  the value of your  investment  will rise and fall,  and you could lose
money.  The  portfolio's  social policy could cause it to  underperform  similar
portfolios that do not have a social policy.

Among the reasons for this are:

o    undervalued  stocks that don't meet the social  criteria  could  outperform
     those that do

o    economic or political  changes could make certain companies less attractive
     for investment

o    the  social  policy  could  cause  the  fund to sell or avoid  stocks  that
     subsequently perform well

To the extent that the portfolio  emphasizes mid- or large-cap  stocks, it takes
on the  associated  risks.  Mid-cap  stocks  tend to be  somewhat  riskier  than
large-cap  stocks;  over time,  however,  large-cap stocks may perform better or
less well than mid-cap  stocks.  At any given time, one or both groups of stocks
may be out of favor with investors.  If the portfolio emphasizes either group of
stocks, its performance could suffer.

With a value approach, there is also the risk that stocks may remain undervalued
during a given period.  This may happen  because value stocks as a category lose
favor with investors compared to growth stocks or because the managers failed to
anticipate  which stocks or industries  would  benefit from  changing  market or
economic conditions.

- --------------------------------------------------------------------------------
Other Risks
- --------------------------------------------------------------------------------

The portfolio  may use certain  practices and  securities  involving  additional
risks.

Borrowing,  securities lending,  and derivatives could create leverage,  meaning
that  certain  gains  or  losses  could be  amplified,  increasing  share  price
movements. These investments are not subject to the portfolio's social policy.

Although  they  may add  diversification,  foreign  securities  can be  riskier,
because  foreign  markets tend to be more volatile and currency  exchange  rates
fluctuate.

When the  portfolio  anticipates  unusual  market  or other  conditions,  it may
temporarily  depart  from its  goal and  invest  substantially  in  high-quality
short-term investments.  This could help the portfolio avoid losses but may mean
lost opportunities.

                        3  Socially Responsive Portfolio
<PAGE>

PERFORMANCE OF A 
SIMILAR FUND
- --------------------------------------------------------------------------------

Because the portfolio commenced  investment  operations on February 18, 1999, it
does not have performance to report in this prospectus.

However, the portfolio has an investment objective,  policies,  limitations, and
strategies substantially similar to those of, and the same portfolio manager as,
another mutual fund managed by Neuberger Berman  Management called the Neuberger
Berman Socially  Responsive Fund. The following table shows average annual total
returns  for that fund as well as the  Standard  & Poor's  500  Index,  which is
pertinent to the Neuberger  Berman  Socially  Responsive  Fund.

AVERAGE ANNUAL TOTAL % RETURNS as of 12/31/98
- --------------------------------------------------------------------------------

                                                                        Since  
                                                                      Inception
                                                   1 Year               3/16/94
- --------------------------------------------------------------------------------
Socially Responsive Fund                           15.01                18.67
S&P 500 Index                                      28.52                25.00

The S&P 500 is an unmanaged index of U.S. stocks.
================================================================================

The  performance  of Neuberger  Berman  Socially  Responsive  Fund reflects that
fund's expense ratio, and does not reflect any expenses or charges that apply to
variable  contracts.  Insurance  expenses and charges would reduce  performance.
Although the objective,  policies,  limitations  and strategies of the portfolio
are  substantially  similar to that of the Neuberger Berman Socially  Responsive
Fund,  the  portfolio  is a distinct  mutual fund and may have  different  fees,
expenses,    investment   returns,    portfolio   holdings,    and   risk/return
characteristics  than Neuberger Berman Socially  Responsive Fund. The historical
performance of Neuberger  Berman  Socially  Responsive Fund is not indicative of
future performance of the portfolio.

This  performance  representation  relies on data suppplied by Neuberger  Berman
Management or derived by Neuberger Berman Management from statistical  services,
reports or other sources it believes to be reliable.

- --------------------------------------------------------------------------------
Management  
- --------------------------------------------------------------------------------

Janet Prindle,  a Vice President of Neuberger Berman  Management and a principal
of Neuberger  Berman,  LLC joined the latter firm in 1977. She has been managing
assets  using  social  criteria  since  1990,  and has been the  manager  of the
portfolio since its inception.

Robert Ladd and Ingrid  Saukaitis  are  Assistant  Vice  Presidents of Neuberger
Berman  Management and have been Associate  Managers of the portfolio  since its
inception.  Ladd has been a portfolio manager at the firm since 1992;  Saukaitis
was a project director for a social research group from 1995 to 1997.

Neuberger   Berman   Management   is   the   portfolio's   investment   manager,
administrator,  and distributor. It engages Neuberger Berman, LLC as sub-adviser
to provide management and related services.

The  portfolio  pays the  following  fees to Neuberger  Berman  Management,  all
expressed as a  percentage  of the  portfolio's  average  daily net assets:  for
investment management,  0.55% of the first $250 million; 0.525% of the next $250
million;  0.50% of the next $250  million;  and 0.475% of the next $250 million;
0.45% of the next $500  million;  and 0.425% on assets  over $1.5  billion;  and
0.30% for administration.  The portfolio's  management  agreements are contracts
and may be altered under certain circumstances.  Neuberger Berman Management has
agreed to limit the portfolio's  annual operating expenses when certain expenses
exceed a specified  limit.  This agreement is voluntary and may be  discontinued
after it expires. See the Statement of Additional Information for more details.


                        4  Socially Responsive Portfolio
<PAGE>

Neuberger Berman Advisers Management Trust
Your Investment
- --------------------------------------------------------------------------------

BUYING AND SELLING
PORTFOLIO SHARES

The  portfolio  described  in this  prospectus  is designed for use with certain
variable  insurance  contracts.  Because shares of the portfolio are held by the
insurance companies involved,  you will need to follow the instructions provided
by your insurance company for matters involving allocations to this portfolio.

Under certain circumstances, the portfolio reserves the right to:

o    suspend the offering of shares

o    reject any investment order

o    satisfy an order to sell portfolio shares with securities rather than cash,
     for certain very large orders

o    suspend or postpone  the  redemption  of shares on days when trading on the
     New York Stock Exchange is restricted, or as otherwise permitted by the SEC

Because  the  portfolio  is offered to  different  insurance  companies  and for
different types of variable  contracts  --annuities  and life insurance,  groups
with different  interests  will share the  portfolio.  Due to differences of tax
treatment  and other  considerations  among these  shareholders,  it is possible
(although not likely) that the interests of the shareholders  might sometimes be
in conflict. In addition, the portfolio's  master/feeder structure could lead to
a conflict between the interests of the portfolio shareholders and the interests
of other investors in the master fund's series. For these reasons,  the trustees
of  the  portfolio  watch  for  the  existence  of any  material  irreconcilable
conflicts and will determine what action,  if any,  should be taken in the event
of a conflict. If there is a conflict, it is possible that to resolve it, one or
more  insurance  company  separate  accounts  might be compelled to withdraw its
investment in the  portfolio.  While this might  resolve the  conflict,  it also
might force the portfolio to sell securities at disadvantageous prices.

SHARE PRICES
- --------------------------------------------------------------------------------

When  you  buy  and  sell  shares  of the  portfolio,  the  share  price  is the
portfolio's net asset value per share.

The  portfolio  is open for  business  every day the New York Stock  Exchange is
open.  In  general,  every buy or sell  request you place will go through at the
next share price to be calculated  after your request has been  accepted;  check
with your insurance  company to find out by what time your  transaction  request
must be received in order to be processed the same day. The  portfolio  normally
calculates  its share price as of the end of regular  trading on the Exchange on
business days, usually 4:00 p.m. eastern time.  Depending on when your insurance
company accepts transaction  requests,  it's possible that the portfolio's share
price could  change on days when you are unable to buy or sell  shares.  Because
foreign markets may be open on days when U.S.  markets are closed,  the value of
foreign  securities  owned by the portfolio  could change on days when you can't
buy or sell portfolio  shares.  The portfolio's share price,  however,  will not
change until the next time it is calculated.

- --------------------------------------------------------------------------------
Share Price Calculations
- --------------------------------------------------------------------------------

The  portfolio's  share  price  is the  total  value  of its  assets  minus  its
liabilities,  divided by the total  number of shares.  Because  the value of the
portfolio's  securities  changes every day, the share price  usually  changes as
well.

The portfolio values equity  securities by using market prices,  and values debt
securities using bid quotations from  independent  pricing services or principal
market  makers.  The portfolio may value  short-term  securities  with remaining
maturities  of less  than 60 days at cost;  these  values,  when  combined  with
interest earned, approximate market value.

In rare cases,  events that occur after  markets have closed may render  certain
prices unreliable. When the portfolio believes a market price does not reflect a
security's  true value,  the  portfolio  may  substitute  for the market price a
fair-value  estimate  derived  through  methods  approved by its  trustees.  The
portfolio  may  also  use  these  methods  to value  certain  types of  illiquid
securities.

                        5  Socially Responsive Portfolio
<PAGE>

PORTFOLIO STRUCTURE
- --------------------------------------------------------------------------------

Neuberger  Berman  Advisers  Management  Trust is  currently  comprised  of nine
portfolios, one of which is the Socially Responsive Portfolio.

Each of the portfolios  uses a  master/feeder  structure.  Rather than investing
directly in securities,  each portfolio is a feeder  portfolio,  meaning that it
invests in a corresponding  master portfolio,  known as a series.  The series in
turn invests in securities,  using the strategies  described in each portfolio's
prospectus.  One potential  benefit of this structure may be lower costs,  since
the expenses of the series can be shared with any other feeder portfolios. As of
December  31,  1998  each  active   portfolio  is  the  only   investor  in  its
corresponding  series.  In this prospectus we have used the word  "portfolio" to
mean a feeder portfolio and its series. Costs for a feeder portfolio include the
feeder's own costs plus its share of the corresponding series' costs.

While Neuberger  Berman  Management and Neuberger  Berman,  LLC may serve as the
adviser or sub-adviser of other mutual funds that have similar names, goals, and
strategies  as some of the  portfolios,  these  other  funds are not part of the
portfolio's  master/feeder  structure.  There may be certain differences between
the portfolios and these other funds in matters such as size, cash flow patterns
and tax matters,  among others. As a result,  there could also be differences in
performance.

For reasons relating to costs or a change in investment goal, among others,
a feeder portfolio could switch to another series or decide to manage its assets
itself. The portfolio is not currently contemplating such a move.


DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

The  information  below is only a summary of some of the  important  Federal tax
considerations  generally  affecting the portfolio and its  shareholders;  for a
more  detailed  discussion,  request  a copy  of  the  Statement  of  Additional
Information. Also, you may want to consult your tax professional. Everyone's tax
situation is different,  and your professional should be able to help you answer
any questions you may have.

Distributions -- The portfolio pays out to shareholders of record any net income
and net capital gains. Ordinarily, the portfolio makes distributions once a year
(in February). All dividends and other distributions received by shareholders of
record are automatically reinvested in portfolio shares.

How   distributions   and   transactions   are  taxed  --  Dividends  and  other
distributions  made  by the  portfolio,  as well as  transactions  in  portfolio
shares,  are  taxable,  if at all,  to the  extent  described  in your  variable
contract prospectus. Consult it for more information.

- --------------------------------------------------------------------------------
Insurance Expenses 
- --------------------------------------------------------------------------------

The fees and policies  outlined in this  prospectus are set by the portfolio and
by Neuberger  Berman  Management.  The fee information here does not include the
fees  and  expenses  charged  by your  insurance  company  under  your  variable
contract;  for those fees, you will need to see the prospectus for your variable
contract.

- --------------------------------------------------------------------------------
Distribution and Services
- --------------------------------------------------------------------------------

The portfolio has a non-fee  distribution  plan that  recognizes  that Neuberger
Berman Management may use its own resources,  including profits that derive from
administration  fees paid by the portfolio,  to pay expenses associated with the
distribution of portfolio shares.

Neuberger Berman  Management may also pay insurance  companies for services they
provide to current and prospective  variable contract owners,  such as providing
information about the portfolio and delivering portfolio documents,  among other
services.

Neuberger  Berman  Management  does  not  receive  any  separate  fees  from the
portfolio for making these payments.

                        6  Socially Responsive Portfolio
<PAGE>

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

Other  tax-related  considerations -- In unusual  circumstances,  there may be a
risk to you of special tax  liabilities  from an  investment  in the  portfolio.
Because the portfolio is offered through certain variable  insurance  contracts,
it is subject to special  diversification  standards  beyond those that normally
apply to mutual funds.  If the  underlying  assets of the portfolio fail to meet
the special  standards,  you could be subject to adverse tax consequences -- for
example, some of the income earned by the portfolio could generate a current tax
liability.

The  managers  of the  portfolio's  assets  intend  to comply  with the  special
diversification  requirements.  It is possible that their attempts to comply may
at times call for decisions that would somewhat reduce  investment  performance.

- --------------------------------------------------------------------------------
Euro and Year 2000 Issues
- --------------------------------------------------------------------------------

Like other mutual funds, the portfolio could be affected by problems relating to
the conversion of European  currencies  into the Euro  beginning  1/1/99 and the
ability of computer systems to recognize the year 2000.

At Neuberger Berman, we are taking steps to ensure that our own computer systems
are compliant  with Euro and Year 2000 issues and to determine  that the systems
used by our major  service  providers  are also  compliant.  We are also  making
efforts  to  determine  whether  companies  whose  securities  are  owned by the
portfolio will be affected by either issue.

At the same time, it is impossible  to know in advance  whether these  problems,
which could disrupt  portfolio  operations and investments if uncorrected,  have
been adequately addressed.

                        7  Socially Responsive Portfolio
<PAGE>

FOR ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------

If you'd like further details on this portfolio,  you can request a free copy of
the following documents:

Shareholder  Reports -- Published  twice a year, the  shareholder  reports offer
information about the portfolio's recent performance, including:

o    a  discussion  by the  portfolio  manager(s)  about  strategies  and market
     conditions

o    fund performance data and financial statements

o    complete portfolio holdings

Statement  of  Additional  Information  -- The SAI contains  more  comprehensive
information on this portfolio, including:

o    various types of securities and practices, and their risks

o    investment limitations and additional policies

o    information about the portfolio's management and business structure

The SAI is  incorporated  by reference into this  prospectus,  making it legally
part of this prospectus.


 Investment  manager:
 Neuberger Berman Management Inc.
 Sub-adviser:
 Neuberger Berman, LLC


==================
 Neuberger Berman
==================

 Neuberger Berman Management Inc.
 605 Third Avenue 2nd Floor
 New York, NY 10158-0180


- --------------------------------------------------------------------------------
Obtaining  Information
- --------------------------------------------------------------------------------

You can obtain a shareholder report, SAI, and other information from:

Neuberger Berman Management Inc.
605 Third Avenue 2nd Floor
New York, NY 10158-0180

800.877.9700
212.476.8800

Web site:
www.nbfunds.com
Email:
[email protected]

Securities and Exchange Commission
Washington, DC 20549-6005
800-SEC-0330 (Public Reference Section)

Web site:
www.sec.gov

You can request  copies of documents  from the SEC for the cost of a duplicating
fee, or view documents at the SEC's Public Reference Room in Washington.



[RECYCLE LOGO] NMARR5780599

SEC file number 811-425


<PAGE>


                   NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST

                       STATEMENT OF ADDITIONAL INFORMATION

                                Dated May 1, 1999


     The Balanced Portfolio, Growth Portfolio, Guardian Portfolio, International
Portfolio,  Limited  Maturity Bond Portfolio,  Liquid Asset  Portfolio,  Mid-Cap
Growth Portfolio,  Partners Portfolio and Socially Responsive  Portfolio (each a
"Portfolio")  of Neuberger  Berman  Advisers  Management  Trust  ("Trust") offer
shares  pursuant to a  Prospectus  dated May 1, 1999 and invest all of their net
investable  assets in AMT  Balanced  Investments,  AMT Growth  Investments,  AMT
Guardian Investments,  AMT International Investments,  AMT Limited Maturity Bond
Investments,  AMT Liquid Asset Investments,  AMT Mid-Cap Growth Investments, AMT
Partners Investments and AMT Socially Responsive  Investments (each a "Series"),
respectively.

     The Portfolios'  Prospectus provides the basic information that an investor
should know before investing. A copy of the Prospectus may be obtained,  without
charge,  by  writing  the Trust at 605 Third  Avenue,  2nd Floor,  New York,  NY
10158-0180, or by calling the Trust at 800-877-9700.

     This  Statement of Additional  Information  ("SAI") is not a prospectus and
should be read in conjunction with the Prospectus.

     No  person  has  been  authorized  to give any  information  or to make any
representations  not  contained in the  Prospectus  or in this SAI in connection
with  the  offering  made  by the  Prospectus,  and,  if  given  or  made,  such
information or representations must not be relied upon as having been authorized
by a Portfolio or its distributor. The Prospectus and this SAI do not constitute
an offering by a Portfolio or its distributor in any  jurisdiction in which such
offering may not lawfully be made.

     The "Neuberger  Berman" name and logo are service marks of Neuberger Berman
LLC.  "Neuberger  Berman Management Inc." and the Portfolios and Series names in
this SAI are either service marks or registered  trademarks of Neuberger  Berman
Management Inc. (C)1999 Neuberger Berman Management Inc.


                                        i

<PAGE>


                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----


INVESTMENT INFORMATION.........................................................1

         Investment Policies and Limitations...................................1
         Rating Agencies.......................................................5
         Investment Insight....................................................6
         Additional Investment Information....................................17

CERTAIN RISK CONSIDERATIONS...................................................53

PERFORMANCE INFORMATION.......................................................53

TRUSTEES AND OFFICERS.........................................................58

CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES...........................63

INVESTMENT MANAGEMENT, ADVISORY AND ADMINISTRATION SERVICES...................66

         Expense Limitations..................................................68
         Management and Control of NB Management..............................69
         Sub-Adviser..........................................................70
         Investment Companies Advised.........................................71

DISTRIBUTION ARRANGEMENTS.....................................................73

ADDITIONAL PURCHASE AND REDEMPTION INFORMATION................................75

         Suspension of Redemptions............................................76
         Redemptions in Kind..................................................76

DIVIDENDS AND OTHER DISTRIBUTIONS.............................................77

ADDITIONAL TAX INFORMATION....................................................77

         Taxation of Each Portfolio...........................................77
         Taxation of Each Series..............................................79

PORTFOLIO TRANSACTIONS........................................................84

PORTFOLIO TURNOVER............................................................91

REPORTS TO SHAREHOLDERS.......................................................91


                                       ii
<PAGE>



INFORMATION REGARDING ORGANIZATION, CAPITALIZATION, AND OTHER MATTERS.........91

CUSTODIAN AND TRANSFER AGENT..................................................93

INDEPENDENT AUDITORS..........................................................94

LEGAL COUNSEL.................................................................94

REGISTRATION STATEMENT........................................................94

FINANCIAL STATEMENTS..........................................................94

APPENDIX A:  RATINGS OF CORPORATE BONDS AND COMMERCIAL PAPER.................A-1

APPENDIX B:  NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST......................B-1



                                       iii
<PAGE>


                             INVESTMENT INFORMATION

     Each Portfolio is a separate series of the Trust, a Delaware business trust
registered with the Securities and Exchange Commission ("SEC") as a diversified,
open-end  management  investment  company and  organized on May 23,  1994.  Each
Portfolio seeks its investment  objective by investing all of its net investable
assets  in the  corresponding  Series  of  Advisers  Managers  Trust  ("Managers
Trust"),  which has an investment objective identical to, and a name similar to,
that of the Portfolio. Each Series, in turn, invests in securities in accordance
with an investment objective, policies and limitations identical to those of its
corresponding  Portfolio.  (The  Trust  and  Managers  Trust,  which  also  is a
diversified,  open-end management  investment company,  are together referred to
below as the  "Trusts.")  All Series of Managers  Trust are managed by Neuberger
Berman Management Incorporated ("NB Management").

     The following  information  supplements the discussion in the Prospectus of
the investment  objective,  policies and  limitations of each Portfolio and each
Series. Unless otherwise specified,  those investment  objectives,  policies and
limitations  are not fundamental and may be changed by the trustees of the Trust
and Managers Trust without  shareholder  approval.  The  fundamental  investment
objectives,  policies  and  limitations  of a  Portfolio  or a Series may not be
changed  without  the  approval  of the lesser of: (1) 67% of the total units of
beneficial  interest  ("shares")  of the  Portfolio or Series  represented  at a
meeting at which more than 50% of the outstanding Portfolio or Series shares are
represented;  or (2) a majority of the  outstanding  shares of the  Portfolio or
Series.  These  percentages  are required by the Investment  Company Act of 1940
("1940  Act") and are  referred  to in this SAI as a "1940 Act  majority  vote."
Whenever  a  Portfolio  is  called  upon to vote on a change  in the  investment
objective or a fundamental  investment policy or limitation of its corresponding
Series,  the Portfolio casts its votes thereon in proportion to the votes of its
shareholders at a meeting thereof called for that purpose.

Investment Policies and Limitations

     Each Portfolio has the following  fundamental  investment policy, to enable
it to invest in its corresponding Series:

     Notwithstanding any other investment policy of the Portfolio, the Portfolio
     may  invest  all  of  its  net  investable  assets  (cash,  securities  and
     receivables  relating to securities) in an open-end  management  investment
     company having  substantially the same investment  objective,  policies and
     limitations as the Portfolio.

     All other fundamental and non-fundamental  investment objectives,  policies
and  limitations of each  Portfolio are identical to those of its  corresponding
Series.  Therefore,  although the following discusses the investment objectives,
policies  and   limitations  of  the  Series,   it  applies   equally  to  their
corresponding Portfolios.


                                       1
<PAGE>


     For purposes of the investment  limitation on concentration in a particular
industry,  NB Management  determines the "issuer" of a municipal obligation that
is  not  a  general   obligation   note  or  bond  based  on  the   obligation's
characteristics.  The most significant of these characteristics is the source of
funds for the repayment of principal and payment of interest on the  obligation.
If an  obligation  is  backed  by an  irrevocable  letter  of  credit  or  other
guarantee,  without which the obligation  would not qualify for purchase under a
Series'  quality  restrictions,  the  issuer  of the  letter  of  credit  or the
guarantee is considered an issuer of the obligation.  If an obligation meets the
quality  restrictions of a Series without credit support,  the Series treats the
commercial developer or the industrial user, rather than the governmental entity
or the  guarantor,  as the issuer of the  obligation,  even if the obligation is
backed by a letter of credit or other guarantee.  The Liquid Asset Portfolio and
its  corresponding  Series determine the "issuer" of a municipal  obligation for
purposes  of its  policy  on  industry  concentration  in  accordance  with  the
principles of Rule 2a-7 under the 1940 Act. Also for purposes of the  investment
limitation on concentration in a particular  industry,  both mortgage-backed and
asset-backed   securities  are  grouped   together  as  a  single  industry  and
certificates  of deposit ("CD") is interpreted to include  similar types of time
deposits.

     Except for the  limitation  on borrowing  and,  with respect to AMT Limited
Maturity Bond  Investments and AMT Liquid Asset  Investments,  the limitation on
illiquid securities, any maximum percentage of securities or assets contained in
any investment policy or limitation will not be considered to be exceeded unless
the  percentage  limitation  is exceeded  immediately  after,  and because of, a
transaction  by a Series.  If events  subsequent  to a  transaction  result in a
Series exceeding the percentage  limitation on borrowing or illiquid securities,
NB Management will take appropriate steps to reduce the percentage of borrowings
or the percentage held in illiquid securities, as may be required by law, within
a reasonable amount of time.

     The Series' fundamental investment policies and limitations are as follows:

     1.  Borrowing.  Each Series may not borrow money,  except that a Series may
(i) borrow  money from banks for  temporary  or  emergency  purposes and not for
leveraging or investment  (except for AMT  International  Investments  which may
borrow for  leveraging  or  investment)  and (ii) enter into reverse  repurchase
agreements  for any purpose;  provided that (i) and (ii) in  combination  do not
exceed 33-1/3% of the value of its total assets  (including the amount borrowed)
less  liabilities  (other than  borrowings).  If at any time  borrowings  exceed
33-1/3%  of the value of a Series'  total  assets,  the Series  will  reduce its
borrowings  within  three days  (excluding  Sundays and  holidays) to the extent
necessary to comply with the 33-1/3% limitation.

     2.  Commodities.  Each  Series may not  purchase  physical  commodities  or
contracts thereon, unless acquired as a result of the ownership of securities or
instruments,  but this  restriction  shall not prohibit a Series from purchasing
futures  contracts  or  options   (including  options  on  futures  and  foreign
currencies and forward  contracts but excluding  options or futures contracts on
physical commodities) or from investing in securities of any kind.


                                       2
<PAGE>


     For purposes of the limitations on commodities,  the Series do not consider
foreign currencies or forward contracts to be physical commodities.

     3.  Diversification.  Each Series may not, with respect to 75% of the value
of its  total  assets,  purchase  the  securities  of  any  issuer  (other  than
securities issued or guaranteed by the U.S.  Government,  or any of its agencies
or  instrumentalities)  if,  as a  result,  (i) more than 5% of the value of the
Series' total assets would be invested in the  securities of that issuer or (ii)
the Series would hold more than 10% of the outstanding voting securities of that
issuer.

     4. Industry Concentration. Each Series may not purchase any security if, as
a result,  25% or more of its total  assets  (taken at current  value)  would be
invested in the securities of issuers having their principal business activities
in the same  industry.  This  limitation  does not apply to purchases of (i) the
securities  issued or  guaranteed  by the U.S.  Government,  or its  agencies or
instrumentalities,  or (ii)  investments  by all  Series  (except  AMT  Partners
Investments  and AMT  International  Investments)  in certificates of deposit or
bankers' acceptances issued by domestic branches of U.S. banks.

     5.  Lending.  Each Series may not lend any  security or make any other loan
if, as a result,  more than 33-1/3% of its total assets (taken at current value)
would  be lent to other  parties,  except  in  accordance  with  its  investment
objective,  policies, and limitations,  (i) through the purchase of a portion of
an issue of debt securities, or (ii) by engaging in repurchase agreements.

     6. Real Estate. Each Series may not purchase real estate unless acquired as
a result of the  ownership of securities or  instruments,  but this  restriction
shall not  prohibit a Series from  purchasing  securities  issued by entities or
investment  vehicles  that own or deal in real estate or interests  therein,  or
instruments secured by real estate or interests therein.

     7. Senior Securities.  Each Series may not issue senior securities,  except
as permitted under the 1940 Act.

     8.  Underwriting.  Each  Series  may not  underwrite  securities  of  other
issuers,  except  to the  extent  that  a  Series,  in  disposing  of  portfolio
securities,  may be  deemed  to be an  underwriter  within  the  meaning  of the
Securities Act of 1933 ("1933 Act").

     The following non-fundamental  investment policies and limitations apply to
all Series unless otherwise indicated.

     1.  Borrowing.  (All Series  except AMT  International  Investments).  Each
Series may not purchase  securities  if  outstanding  borrowings,  including any
reverse repurchase agreements, exceed 5% of its total assets.

     2.  Lending.  Except for the  purchase of debt  securities  and engaging in
repurchase agreements,  each Series may not make any loans other than securities
loans.


                                       3
<PAGE>


     3. Margin  Transactions.  Each Series may not purchase securities on margin
from brokers or other  lenders  except that a Series may obtain such  short-term
credits as are necessary for the clearance of securities  transactions.  For all
Series (except AMT Liquid Asset Investments)  margin payments in connection with
transactions  in futures  contracts and options on futures  contracts  shall not
constitute  the  purchase  of  securities  on margin  and shall not be deemed to
violate the foregoing limitation.

     4. Illiquid Securities.  Each Series may not purchase any security if, as a
result,  more than 15% (10% in the case of AMT Liquid Asset  Investments) of its
net assets would be invested in illiquid securities. Illiquid securities include
securities  that  cannot be sold  within  seven days in the  ordinary  course of
business  for  approximately  the  amount at which the  Series  has  valued  the
securities, such as repurchase agreements maturing in more than seven days.

     5. Investments in Any One Issuer. (AMT International  Investments).  At the
close of each quarter of the Series'  taxable year,  (i) no more than 25% of its
total assets will be invested in the  securities  of a single  issuer,  and (ii)
with regard to 50% of its total assets, no more than 5% of its total assets will
be invested in the securities of a single issuer. These limitations do not apply
to U.S.  government  securities,  as defined for tax purposes,  or securities of
another regulated investment company.

     (AMT Liquid Asset Investments).  The Series may not purchase the securities
of any  one  issuer  (other  than  U.S.  Government  and  Agency  Securities  or
securities  subject to a guarantee issued by a non-controlled  person as defined
in Rule 2a-7  under the 1940 Act) if, as a result,  more than 5% of the  Series'
total assets would be invested in the securities of that issuer.

     6. Foreign  Securities.  (AMT Guardian,  Partners,  and Socially Responsive
Investments).  These  Series may not invest  more than 10% of the value of their
total assets in securities  of foreign  issuers,  provided that this  limitation
shall not apply to foreign  securities  denominated in U.S.  dollars,  including
American Depositary Receipts ("ADRs").

     7.  Pledging.  (AMT  Guardian  Investments).  The  Series may not pledge or
hypothecate any of its assets,  except that the Series may pledge or hypothecate
up to 5% of its total assets in connection  with its entry into any agreement or
arrangement   pursuant  to  which  a  bank  furnishes  a  letter  of  credit  to
collateralize  a capital  commitment  made by the  Series to a mutual  insurance
company of which the Series is a member.

     The other Series are not subject to any  restrictions  on their  ability to
pledge  or  hypothecate  assets  and  may  do so in  connection  with  permitted
borrowings.

     In  addition  to the  preceding  non-fundamental  investment  policies  and
limitations,  AMT Liquid Asset  Investments has adopted  procedures  pursuant to
Rule 2a-7 under the 1940 Act which impose certain  restrictions  and limitations
on the Series' investments.


                                       4
<PAGE>


     AMT  Growth  and  Partners  Investments  do not intend to invest in futures
contracts and options thereon during the coming year. In addition,  although the
Series do not have policies  limiting  their  investment in warrants,  no Series
currently  intends to invest in warrants unless acquired in units or attached to
securities.

     Temporary Defensive Positions

     For  temporary  defensive  purposes,   each  Series  (except  AMT  Socially
Responsive  and  International  Investments)  may invest up to 100% of its total
assets in cash and cash  equivalents,  U.S.  Government  and Agency  Securities,
commercial  paper  and  certain  other  money  market  instruments,  as  well as
repurchase  agreements  collateralized  by the foregoing.  AMT Limited  Maturity
Bond,  Balanced (debt securities portion) and Liquid Asset Investments may adopt
shorter than normal weighted  average  maturities or durations.  Yields on these
securities are generally  lower than yields  available on the  lower-rated  debt
securities in which AMT Limited  Maturity Bond and AMT Balanced  (debt  portion)
Investments normally invests.

     Any part of AMT  Socially  Responsive  Investments'  assets may be retained
temporarily  in investment  grade fixed income  securities  of  non-governmental
issuers,  U.S. Government and Agency Securities,  repurchase  agreements,  money
market  instruments,  commercial  paper,  and cash and cash  equivalents when NB
Management believes that significant  adverse market,  economic,  political,  or
other  circumstances  require  prompt  action to avoid  losses.  Generally,  the
foregoing  temporary  investments  for AMT Socially  Responsive  Investments are
selected with a concern for the social impact of each investment.

     For temporary defensive purposes, AMT International  Investments may invest
up to 100% of its total assets in short-term foreign and U.S. investments,  such
as cash or cash  equivalents,  commercial  paper,  short-term bank  obligations,
government and agency securities,  and repurchase agreements.  AMT International
Investments  may also invest in such  instruments  to increase  liquidity  or to
provide collateral to be held in segregated accounts.

Rating Agencies

     As discussed in the Prospectus,  each Series may purchase  securities rated
by Standard & Poor's  Ratings Group ("S&P"),  Moody's  Investors  Service,  Inc.
("Moody's"),  or any other nationally recognized statistical rating organization
("NRSRO").  The ratings of an NRSRO  represent  its opinion as to the quality of
securities it undertakes to rate. Ratings are not absolute standards of quality;
consequently,  securities  with the same  maturity,  coupon  and rating may have
different yields.  Although the Series may rely on the ratings of any NRSRO, the
Series mainly refer to ratings assigned by S&P and Moody's,  which are described
in Appendix A to this SAI. The Series may also invest in unrated securities that
are deemed  comparable in quality by NB  Management  to the rated  securities in
which the Series may permissibly invest.


                                       5
<PAGE>

Investment Insight

     Neuberger Berman's commitment to its asset management approach is reflected
in the more than $125 million the organization's principals, employees and their
families have invested in the Neuberger Berman mutual funds.

     AMT Limited Maturity Bond,  Balanced (debt  securities  portion) and Liquid
Asset  Investments are designed with varying degrees of risk and return based on
the duration and/or maturity of each Series. Duration measures a bond's exposure
to interest rate risk.  Duration  incorporates a bond's yield,  coupon  interest
payments,  final  maturity and call features into one measure.  In general,  the
longer  you extend a bond's  duration,  the  greater  its  potential  return and
exposure to interest rate fluctuations.

     For  example,  AMT Liquid  Asset  Investments  is a money  market fund with
average  portfolio  maturity  of up to 90 days.  AMT Limited  Maturity  Bond and
Balanced  (debt  securities  portion)  Investments  seek a higher income but can
experience  more  price  fluctuation.  Their  portfolio  of bonds  has a maximum
average  duration  of four  years.  A more  detailed  discussion  of each Series
follows.  In all cases,  these  Series  pursue  attractive  current  income with
varying  levels of risk to principal  and differ  according to their  investment
guidelines.  These guidelines  include maturity or duration,  type of bonds, and
the credit quality of these bonds.

AMT Growth Investments; AMT Balanced Investments (equity securities portion)

     The portfolio  co-managers  of AMT Growth and Balanced  (equity  securities
portion) Investments love surprises - positive earnings surprises that is. Their
extensive  research has revealed that  historically the stocks of companies that
consistently  exceeded  consensus  earnings  estimates  tended  to  be  terrific
performers.  They screen the mid-cap  growth  stock  universe to isolate  stocks
whose most recent earnings have beat the Street's  expectations.  They then roll
up their sleeves and, through diligent fundamental research,  strive to identify
those companies most likely to record a string of positive  earnings  surprises.
Their goal is to invest today in the fast growing mid-sized  companies that will
comprise tomorrow's Fortune 500.

     The  co-managers  explain,  "Let us begin by  saying  we are  growth  stock
investors  in the  purest  sense  of the  term.  We want to own  the  stocks  of
companies that are growing  earnings faster than the average  American  business
and ideally,  faster than the competitors in their  respective  industries." The
co-managers  explain that they are  particularly  biased towards  companies that
have consistently beaten consensus earnings estimates.  Their extensive research
has  revealed  that stocks whose  earnings  consistently  exceeded  expectations
offered greater potential for long-term capital appreciation.

     The  co-managers  focus  their  research  efforts on mid-cap  stocks in new
and/or rapidly evolving industries. However, the Series can invest in securities
of companies of any  capitalization  level.  The mid-cap  growth  sector is less
widely followed by Wall Street  analysts and therefore,  less efficient than the
large-cap  stock market.  Considering the currently high valuations of large-cap
growth stocks relative to mid-cap growth stocks with what the co-managers  think
is comparable or, in many cases, 


                                       6
<PAGE>


better earnings growth potential,  they believe the Series are particularly well
positioned in today's market.

     The Series now use the Russell  Midcap(TM) Index as a benchmark in addition
to the S&P "500". The Series regard mid-cap companies to be those companies with
market  capitalizations  that,  at the  time  of  investment,  fall  within  the
capitalization  range of the Russell  Midcap(TM)  Index as last announced by the
Frank  Russell  Company  before the date of this SAI.  For purposes of this SAI,
that range was  approximately  $1.4 billion to $10.3  billion.  Companies  whose
market capitalizations move out of this mid-cap range after purchase continue to
be considered mid-cap companies for purposes of the Series' investment  program.
The Series do not follow a policy of active trading for short-term profits.

     They reiterate, "Let us once again emphasize we are growth stock investors.
But, there is a value  component to our discipline as well. We just define value
differently."  The kind of fast growth companies the co-managers favor generally
do not trade at below market average price/earnings ratios.  However, they often
trade at very  reasonable  multiples  relative to annual  earnings growth rates.
Given the choice  between two good  companies with  comparable  earnings  growth
rates,  the  co-managers  will select the one  trading at the lower  multiple to
earnings growth.

     "We are dispassionate  sellers," say the co-managers.  "If a stock does not
live up to our earnings  expectations  or if we believe its valuation has become
excessive,  we will sell and direct the  assets to another  opportunity  we find
more attractive.  We will maintain a broadly  diversified  portfolio rather than
heavily concentrating our holdings in just a few of the fastest growing industry
groups."

AMT Guardian Investments

     AMT Guardian  Investments  subscribes to the same stock-picking  philosophy
followed since Roy R. Neuberger founded a similar mutual fund in 1950.

     It's no great  trick for a mutual  fund to make  money  when the  market is
rising.  The tide that lifts stock values will carry most funds along.  The true
test of  management is its ability to make money even when the market is flat or
declining.

     The portfolio co-managers place a high premium on being knowledgeable about
the  companies  whose  stocks they buy.  That  knowledge is  important,  because
sometimes  it takes  courage  to buy  stocks  that the  rest of the  market  has
forsaken. The managers would rather buy an undervalued stock because they expect
it to become  fairly  valued  than buy one  fairly  valued  and hope it  becomes
overvalued.  The  managers  tend to buy stocks that are out of favor,  believing
that an investor is not going to get great  companies at great  valuations  when
the market perception is great.

     Consistent Value Style

     Guardian is a large cap value fund that searches for:

     o    Established high-quality companies

     o    Low price/earnings ratios


                                       7
<PAGE>


     o    Strong balance sheets

     o    Solid management

     Disciplined, Large-Cap Value Orientation

     As  part  of  its  stock  selection   process,   the  portfolio  pursues  a
disciplined, value-driven investment style, which is Neuberger Berman's historic
strength.  Specifically,  the portfolio  co-managers  seek  large-capitalization
companies whose stock prices are substantially  undervalued.  Characteristics of
these firms may  include:  solid  balance  sheets,  above-average  returns,  low
valuations, and consistent earnings.

     Bottom-Up Approach to Stock Selection

     The  managers  believe  cheap  stocks are  plentiful,  but true  investment
bargains  are a rare find.  To  uncover  them,  they scour a universe  of stocks
consisting of the bottom 20% of the market in terms of  valuation.  Those deemed
by the  managers as  inexpensive  and poised for a  turnaround  are placed under
consideration.   Potential   investment   candidates  are   financially   sound,
well-managed companies that are undervalued relative to their earnings potential
and the market as a whole.

     A Broad View of Risk Management

     Managing  risk  involves  carefully  monitoring  the way the  stocks in the
portfolio react to one another as well as to outside factors. Companies that are
in completely different sectors may in fact react similarly to certain economic,
market  or   international   events.   In  their   efforts  to  consider   these
relationships,  the managers use quantitative analysis to evaluate these factors
and their  impact on the overall  portfolio.  It is a process  they believe is a
crucial  component  in  controlling  risk and one that  evolves over time as new
holdings are introduced to the portfolio.

     A Strong Sell Discipline

     The  managers  will  generally  make an  initial  investment  in a stock of
between 1-4% of total net assets. A higher weighting indicates that they believe
the company has an "edge" over Wall Street  analysts,  or they  believe it is an
uncovered value that others may have  overlooked.  Once a stock grows beyond the
high side of that range, gains are harvested and the holding is reduced to about
3% of total net assets.

AMT International Investments

     Equity portfolios  consisting solely of domestic investments generally have
not enjoyed the higher returns foreign  opportunities  can offer.  Over the past
thirty years,  for example,  the average growth rates of many foreign  economies
have out-paced that of the United States.  While the United States accounted for
almost 66% of the world's total  securities  market  capitalization  in 1970, it
accounted  for less than 30% of that  total at the end of 1996 -- or less than a
third of the dollar value of



                                       8
<PAGE>


the world's available stocks and bonds.(1)

     Over time, a number of international equity markets have outperformed their
U.S.  counterpart.  Although  there are no  guarantees,  foreign  markets  could
continue to provide attractive investment opportunities.

     In addition, according to Morgan Stanley Capital International, the leading
companies in any given sector are not always U.S.-based. For example, all ten of
the largest construction  companies,  nine of the ten largest banks and seven of
the ten largest automobile companies are based outside of the United States.

     A  principal  advantage  of  investing  overseas  is   diversification.   A
diversified  portfolio  gives  investors  the  opportunity  to pursue  increased
overall  return  while  reducing  risk.  It is  prudent to  diversify  by taking
advantage of investment  opportunities  in more than one country's stock or bond
market.  By  investing  in  several  countries  through a  worldwide  portfolio,
investors  can lower their  exposure  and  vulnerability  to weakness in any one
market.  Investors should be aware, however, that international investing is not
a guarantee  against  market  risk and may be  affected  by  economic  and other
factors described in the Prospectus and this SAI. These include the prospects of
individual companies and other risks such as currency  fluctuations or controls,
expropriation, nationalization and confiscator taxation.

     Furthermore,  buying  foreign  stocks  and bonds can be  difficult  for the
individual investor and involves many decisions. Accessing international markets
is  complicated;  few  individuals  have  the  time  or  resources  to  evaluate
thoroughly  foreign  companies  and  markets  or the  ability  to incur the high
transaction costs of direct investment in such markets.  A mutual fund investing
in foreign  securities offers an investor broad  diversification at a relatively
low cost.

     At least 65% of the Series'  total  assets  normally are invested in equity
securities of foreign issuers. The Series invests primarily in equity securities
of companies  located in developed  foreign  economies,  as well as in "emerging
markets."  NB  Management's  investment  process  includes  a  combination  of a
top-down or macro-economic analysis and a bottom-up, micro-economic approach, as
well as a blend of growth  and  value  investment  styles.  The  Series  may use
leverage to facilitate transactions it enters into for hedging purposes.

     The  portfolio  manager  searches  the world for  investment  opportunities
wherever and whenever they arise -- in both developed and emerging markets.

     A Macro- and Micro-Economic Approach

     A macro view of various  regions and  countries  is  incorporated  into the
manager's  fundamental  bottom-up approach to aid in the selection of areas that
offer the best relative value. The manager's  analysis is designed to add value,
not replicate a particular  international index. 


- ----------
(1)  Source: Morgan Stanley Capital International.


                                       9
<PAGE>



Countries  believed to offer the best  investment  potential  are  overweighted,
while those with limited  prospects are  underweighted.  The manager's  micro or
bottom-up  perspective seeks  well-managed  companies with strong  fundamentals,
such as attractive cash flows, strong balance sheets, and solid earnings growth.
The Series'  selection  process leads to  investments in companies of all sizes,
including small-, mid- and large-sized companies.

     A Blend of Growth and Value Investment Styles

     The manager uses a blend of styles to guard against significant losses when
a  particular  style  falls out of favor with  investors.  The growth  component
highlights rapidly growing companies in niche industries with unique products or
services,  while  the  value  component  focuses  on  undervalued,  out-of-favor
companies that may be poised for a turnaround.

     Well-Diversified Across Countries and Individual Securities

     The manager  typically  allocates  assets across more than 20 countries and
upwards of 100 individual securities issues.

     Currency Risk Management

     Exchange  rate   movements  and   volatility   are  important   factors  in
international investing. The portfolio manager believes in actively managing the
Series' currency exposure, in an effort to capitalize on foreign currency trends
and  to  reduce  overall  portfolio  volatility.  Currency  risk  management  is
performed  separately  from  equity  analysis.  The  portfolio  manager  uses  a
combination of economic  analysis to guide the Series'  longer-term  posture and
quantitative  trend  analysis  to assist in timing  decisions  with  respect  to
whether (or when) to invest in instruments  denominated in a particular  foreign
currency,  or whether (or when) to hedge particular  foreign currencies in which
liquid foreign exchange markets exist.

     To illustrate the importance of including an  international  component in a
well-diversified portfolio, below are the annual returns for the S&P "500" Index
and the  EAFE(R)  Index for the years  1984-1998.  In seven of the past  fifteen
years, international stocks (as represented by the EAFE Index) have outperformed
U.S.  stocks  (as  represented  by the  S&P  500  Index),  in  some  cases  by a
significant margin.  Conversely,  in other years, U.S. stocks have substantially
outperformed  international stocks. Investors with exposure to both domestic and
international  issues can minimize losses because gains in one market can offset
losses in another.

            Annual Total Returns for EAFE and S&P 500 (1984-1998):(2)


- ----------
(2)  Total   return   includes   reinvestment   of  all   dividends   and  other
     distributions.  The EFAE(R) Index, also known as the Morgan Stanley Capital
     International Europe, Australasia, Far East Index, is an unmanaged index of
     over 1,000 foreign stock prices and is translated  into U.S.  dollars.  The
     S&P  "500"  Index  is  an  unmanaged  index  generally   considered  to  be
     representative  of U.S.  stock  market  activity.  Indices do not take into
     account  brokerage  

                                       10
<PAGE>


<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
Year    1998    1997     1996    1995   1994     1993     1992    1991     1990    1989     1988     1987     1986     1985    1984
- ------------------------------------------------------------------------------------------------------------------------------------
<S>    <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>      <C>     <C>      <C>       <C>     <C>      <C>      <C>  
S&P
500    28.52%  33.32%   22.90%  37.44%  1.36%   10.03%    7.61%  30.34%   -3.11%  31.59%   16.50%    5.18%   18.62%   31.64%   6.22%
- ------------------------------------------------------------------------------------------------------------------------------------
EAFE   20.33%   2.06%    6.36%  11.55%  8.06%   32.94%  -11.85%  12.50%  -23.20%  10.80%   28.59%   24.93%   69.94%   56.72%   7.86%
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

     Of  course,  these  historical  results  may not  continue  in the  future.
Investors  should keep in mind the greater  risks  inherent in foreign  markets,
such as currency exchange fluctuations,  interest rates, and potentially adverse
economic and political conditions.

An Interview with the Portfolio Manager

     Q: Why should investors allocate a portion of their assets to international
markets?

     A: First,  an investor  who does not invest  internationally  misses out on
about two-thirds of the world's  potential  investment  opportunities.  The U.S.
stock market today  represents  less than  one-third of the world's stock market
capitalization,  and the U.S.  portion  continues  to shrink as other  countries
around  the  world  introduce  or  expand  the  size of  their  equity  markets.
Privatizations of government-owned  corporations,  initial public offerings, and
the  occasional  creation  of official  stock  exchanges  in emerging  economies
continuously  present  new  opportunities  for  capital in an  expanding  global
market.

     Second,  many foreign  economies are in earlier stages of development  than
ours and are  growing  fast.  Economic  growth  can  often  mean  potential  for
investment growth.

     Finally,    international    investing    helps   an   investor    increase
diversification,  which can reduce risk.  Domestic and foreign markets generally
do not all move in the same direction,  so gains in one market may offset losses
in another.

     Q: Does international investing involve special risks?

     A:  Currency  risk  is  one  important  risk  presented  by   international
investing.  Fluctuations  in  exchange  rates  can  either  add to or  reduce an
investor's returns.  Anyone who invests in foreign markets should keep that fact
in mind.

     Other risks include,  but are not limited to,  greater  market  volatility,
less government  supervision and  availability  of public  information,  and the
possibility of adverse economic or political  developments.  Additional  special
risks of foreign investing are discussed in the Prospectus.


- ----------
commissions or other fees and expenses of investing in the individual securities
that they track.  Data about the  performance  of these  indices are prepared or
obtained by NB Management.


                                       11
<PAGE>


     Q: What are some of the advantages of investing in an international fund?

     A:  An  international  mutual  fund  can  be a  convenient  way  to  invest
internationally  and  diversify  assets  among  several  markets to reduce risk.
Additionally,  the considerable  burden of searching for timely,  accurate,  and
comprehensive  information  about foreign  economies  and  securities is left to
professional managers.

     Q: What is your investment approach?

     A: We seek to capitalize on investments in countries  where we believe that
positive  economic  and  political  factors are likely to produce  above-average
returns.  Studies have shown that the  allocation  of assets among  countries is
typically the most important factor  contributing to portfolio  performance.  We
believe that, in the long term, a nation's  economic  growth and the performance
of its equity market are highly correlated.  Therefore, we continuously evaluate
the global economic outlook as well as individual  country data to guide country
allocation.  Our process also leads to  diversification  across many  countries,
typically twenty or more, in an effort to limit total portfolio risk.

     We strive to invest in companies within the selected  countries that are in
the best position to capitalize on such positive  developments or companies that
are most attractively valued. We usually include in the Portfolio's  investments
the securities of large-capitalization  companies, determined in relation to the
appropriate national market, as well as securities of faster-growing, small- and
medium-sized  companies  that offer  potentially  higher  returns  but are often
associated with higher risk.

     The criteria for security  selection  focus on companies with leadership in
specific markets or with niches in specific industries,  which appear to exhibit
positive  fundamentals and seem undervalued relative to their earnings potential
or the worth of their  assets.  Typically,  in  emerging  markets,  we invest in
relatively large,  established companies that we believe possess the managerial,
financial,  and  marketing  strength  to  exploit  successfully  the growth of a
dynamic  economy.  In more  developed  markets,  such as Europe and  Japan,  the
Portfolio may invest to a higher degree in medium-sized companies.  Medium-sized
companies can often provide above-average growth and are less followed by market
analysts, which sometimes leads to inefficient valuation.

     Finally,  we strive to limit  total  portfolio  volatility  and protect the
value of portfolio  securities by selectively  hedging the  Portfolio's  foreign
currency exposure in times when we expect the U.S. dollar to strengthen.

     Q: How do you perceive the current outlook?

     A: There is still an abundance of exciting investment  opportunities around
the world.  Many equity markets still have not reached the maturity stage of the
U.S. market and have much more room to grow. There are new markets opening up to
foreign  investment  and many  changes are  occurring  in markets  where  equity
investments  have  traditionally  commanded  less  attention  than fixed  income
securities.


                                       12
<PAGE>


     Q:  Compared  to the stock  market in the  United  States,  are there  more
anomalies in security pricing abroad?

     A:  Well,  the rest of the  world  is not as well  followed  as the  United
States. So you'll find more anomalies.  At the same time,  though,  the level of
analysis of companies  around the world is  improving  every day, and the gap in
coverage is narrowing.

     What never  changes is the  psychology of the investor -- you regularly see
either despair or euphoria in different sectors of every  international  market.
That,  in our  opinion,  creates  opportunities  to  find  undiscovered  gems at
extraordinarily cheap prices.

     These opportunities can come from, say,  uncertainty over an election going
one way or another.  Investors may see the outcome as totally  disastrous  for a
country -- or as totally euphoric.  Then,  reality sets in, and things are never
as bleak or as wonderful as they had been painted.

     Q: Do you integrate ideas from Neuberger Berman's research and the domestic
portfolio managers?

     A: Oh, sure. As everyone knows, the world is becoming smaller,  and certain
industries are becoming global (or have become global). Whether one thinks about
technology,  pharmaceuticals,  medical devices, or the automobile industry, it's
really become one world  market.  So it's crucial to have good  knowledge  about
both the United  States and the areas  outside  the United  States  where  these
companies dominate.

AMT Limited Maturity Bond Investments; AMT Balanced Investments (debt securities
portion)

     AMT Limited  Maturity  Bond  Investments  and  Balanced  Investments  (debt
securities portion) are appropriate for investors who seek to participate in the
returns  of the  bond  market,  but wish to avoid  significant  fluctuations  in
principal  value.  In order to achieve its investment  goal, each Series has the
flexibility  to  invest  across  the  full  range  of bond  sectors  (corporate,
mortgage-backed securities, etc.) and may invest a limited portion of its assets
in foreign  securities  denominated in foreign currencies as well as lower-rated
"high yield" issues.

     The  investment  strategy  of these  Series is based upon the  demonstrated
ability of short and intermediate  duration  portfolios to deliver virtually all
of the income of riskier long-term maturity portfolios. Thus, these Series limit
their maximum average duration to four years. However, in order to improve total
return,  it invests across a broad range of fixed income sectors and within each
sector seeks out  securities  that have a higher yield than  counterpart  issues
that we believe have a similar credit risk. It may  opportunistically  invest in
foreign issues when they offer higher yield than U.S.  issues.  In addition,  it
may invest up to 10% of its net assets in "high yield"  issues when these issues
offer the  prospect of higher total  return to the Series.  It is the  manager's
belief that the  combination of broad sector  diversification,  active  security
selection and flexible maturity and duration  management can offer investors the
prospect of total returns that will approximate the bond market as a whole, with
only moderate fluctuation in principal value.


                                       13
<PAGE>


AMT Liquid Asset Investments

     AMT Liquid  Asset  Investments  is  oriented to  investors  who seek a high
degree of liquidity  while  investing in Government  and corporate  money market
instruments.  The Series is invested to maintain a constant one dollar net asset
value.  The Series invests only in securities  that enjoy one of the two highest
credit ratings or unrated securities deemed equivalent by NB Management.

AMT Mid-Cap Growth Investments

     Co-portfolio  managers of AMT Mid-Cap Growth  Investments  use a growth and
earnings  momentum  approach to investing.  To uncover these mid-cap stocks they
employ  fundamental  analysis,  quantitative  screens and conduct  meetings with
company  management.  They  actively  seek out the stock of  companies  that are
growing  earnings  faster than the competitors in their  respective  industries.
These  stocks are  generally  found  among  fast  growing  companies  in growing
industries.  Say the portfolio co-managers,  "We are looking for the Fortune 500
companies  of  tomorrow".  The Series  looks for  companies  with strong  growth
potential and balances this with valuation analysis.

AMT Partners Investments

     AMT Partners  Investments'  objective is capital  growth.  It seeks to make
money in good markets and not give up those gains during rough times.

     Investors in the Series  typically seek  consistent  performance and have a
moderate risk  tolerance.  They do know,  however,  that stock  investments  can
provide the long-term  upside  potential  essential to meeting  their  long-term
investment  goals,  particularly  a  comfortable  retirement  and planning for a
college education.

     The  portfolio  co-managers  look for stocks  that are  undervalued  in the
marketplace  either in relation to strong  current  fundamentals,  such as a low
price-to-earnings  ratio,  consistent  cash flow, and  successful  track records
through all parts of the market cycle, or in relation to their projection of the
growth of the company's future  earnings.  If the market goes down, those stocks
the Series elects to hold, historically, have gone down less.

     The  portfolio   co-managers  monitor  stocks  of  medium-  to  large-sized
companies  that  often  are not  closely  scrutinized  by other  investors.  The
managers  research  these  companies in order to determine if they are likely to
produce a new  product,  become an  acquisition  target,  or undergo a financial
restructuring.

     What  else  catches  the  portfolio   co-managers'  eyes?  Companies  whose
managements  own  their  own  stock.  These  companies  usually  seek  to  build
shareholder  wealth by buying  back  shares or making  acquisitions  that have a
swift and positive impact on the bottom line.

     To increase the upside  potential,  the managers zero in on companies  that
dominate their industries or their specialized niches. The managers'  reasoning?
Market leaders tend to earn higher levels of profits.


                                       14
<PAGE>


AMT Socially Responsive Investments

     Securities for this Series are selected  through a two-phase  process.  The
first is  financial.  The  portfolio  manager  analyzes a universe of  companies
according  to NB  Management's  value-oriented  philosophy  and looks for stocks
which are  undervalued  for any  number  of  reasons.  The  manager  focuses  on
financial  fundamentals,  including balance sheet ratios and cash flow analysis,
and  meets  with  company  management  in an  effort  to  understand  how  those
unrecognized values might be realized in the market.

     The second part of the process is social screening.  NB Management's social
research is based on the same kind of  philosophy  that  governs  its  financial
approach:  NB Management  believes that first-hand  knowledge and experience are
its most  important  tools.  Utilizing a database,  the  portfolio  manager does
careful,  in-depth  tracking  and  analyzes a large  number of companies on some
eighty issues in six broad social categories. The manager uses a wide variety of
sources to determine company practices and policies in these areas.  Performance
is analyzed in light of  knowledge  of the issues and of the best  practices  in
each industry.

     Under  normal  conditions,  at least 65% of the  Series'  total  assets are
invested in  accordance  with its Social  Policy,  and at least 65% of its total
assets are invested in equity securities.  The Series expects that substantially
all of its equity  securities  will be  selected in  accordance  with the Social
Policy. On occasion,  the portfolio manager may consider deposits with community
banks and credit unions for investment.

     The  portfolio  manager  understands  that,  for  many  issues  and in many
industries, absolute standards are elusive and often counterproductive. Thus, in
addition  to  quantitative  measurements,  the  manager  places  value  on  such
indicators  as  management  commitment,   progress,   direction,   and  industry
leadership.

An Interview with the Portfolio Manager

     Q: First things first. How do you begin your stock selection process?

     A: Our first question is always: On financial grounds alone, is a company a
smart investment? For a company's stock to meet our financial test, it must pass
a number of hurdles.

     We look  for  bargains,  just  like the  portfolio  managers  of the  other
Portfolios.  More  specifically,  we search for  companies  that we believe have
terrific products,  excellent customer service,  and solid balance sheets -- but
because they may have missed quarterly  earnings  expectations by a few pennies,
because  their  sectors  are  currently  out  of  favor,   because  Wall  Street
overreacted  to a temporary  setback,  or because the  company's  merits  aren't
widely known, their stocks are selling at a discount.

     While we look at the  stock's  fundamentals  carefully,  that's  not all we
examine.  We meet an  awful  lot of CEOs  and  CFOs.  Top  officers  of over 400
companies  visit  Neuberger  Berman each year, 


                                       15
<PAGE>


and we're also frequently on the road visiting dozens of  corporations.  We meet
with representatives of every company we own.

     When  we're face to face with a CEO,  we're  searching  for  answers to two
crucial questions: "Does the company have a vision of where it wants to go?" and
"Can the  management  team make it happen?"  We've  analyzed  companies for over
three decades,  and we always look for companies that have both clear strategies
and management talent.

     Q: When you evaluate a company's  balance  sheet,  what matters the most to
you?

     A: Definitely a company's "free cash flow." Compare it to your  household's
discretionary  income -- the money you have left over each  month  after you pay
off your monthly debt and other  expenses.  With ample free cash flow, a company
can do any  number  of  things.  It can  buy  back  its  stock.  Make  important
acquisitions.  Expand its research  and  development  spending.  Or increase its
dividend payments.

     When a company generates lots of excess cash flow, it has growth capital at
its  disposal.  It can  invest  for  higher  profits  down the line and  improve
shareholder value. Determining exactly how a company intends to spend its excess
cash is an entirely different matter -- and that's where the information learned
in our company  meetings  comes in. Still,  you've got to have the extra cash in
the first place. Which is why we pay so much attention to it.

     Q: So you take a hard look at a company's balance sheet and its management.
After a company passes your financial test, what do you do next?

     A: After we're convinced of a company's merits on financial  grounds alone,
we review its record as a corporate citizen. In particular, we look for evidence
of  leadership  in three  key  areas:  concern  for the  environment,  workplace
diversity, and enlightened employment practices.

     It should be clear that our social  screening  always  takes place after we
search far and wide for what we believe  are the best  investment  opportunities
available.  This is a crucial  point,  and an analogy can be used to explain it.
Let's assume you're looking to fill a vital position in your company. What you'd
pay attention to first is the candidate's competence:  Can he or she do the job?
So after  interviewing a number of  candidates,  you'd narrow your list to those
that are highly qualified.  To choose from this smaller group, you might look at
the  candidate's  personality:  Can he or she get along  with  everyone  in your
group?

     Obviously, you wouldn't hire an unqualified person simply because he or she
is likable.  What you'd probably do is give the job to a highly qualified person
who is also compatible with your group.

     Now, let's turn to the companies that do make our financial cuts. How do we
decide whether they meet our social  criteria?  Once again, our regular meetings
with CEOs are key. We look for top  management's  support of  programs  that put
more  women and  minorities  in the  pipeline  to be future  officers  and board
members;  that minimize  emissions,  reduce waste,  conserve energy, and protect


                                       16
<PAGE>


natural  resources;  and that enable  employees  to balance work and family life
with benefits such as flextime and generous maternal and paternal leave.

     We realize that  companies are not all good or all bad.  Instead of looking
for  ethical  perfection,  we  analyze  how a company  responds  to  troublesome
problems.  If a company is cited for  breaking a pollution  law, we evaluate its
reaction.  We also ask: Is it the first time? Do its top executives  have a plan
for making sure it doesn't happen again -- and how committed are they?

     If we're satisfied with the answers, a company makes it into our portfolio.
When all is said and done, we invest in companies that have diverse work forces,
strong CEOs, tough environmental  standards, and terrific balance sheets. In our
judgment, financially strong companies that are also good corporate citizens are
more likely to enjoy a competitive  advantage.  These days, more and more people
won't buy a product unless they know it's environmentally friendly. In a similar
vein,  companies  that  treat  their  workers  well may be more  productive  and
profitable.

     Q:  What kind of  investors  do you think  are  attracted  to the  Socially
Responsive Portfolio?

     A: Shareholders that are looking to invest for the future in more ways than
one. While they care deeply about their own financial  futures,  they're equally
passionate about the world they leave to later generations. They want to be able
to meet their college bills and leave a world where the air is a little  cleaner
and where the doors to the executive suite are a little more open.

Additional Investment Information

     Some or all of the  Series,  as  indicated  below,  may make the  following
investments,  among  others  although  they  may  not buy  all of the  types  of
securities or use all of the investment  techniques that are described.  As used
herein,  "Equity  Series" refers to AMT Balanced  (equity  securities  portion),
Growth,   Guardian,   International,   Mid-Cap  Growth,  Partners  and  Socially
Responsive Investments.  "Income Series" refers to AMT Balanced (debt securities
portion), Limited Maturity Bond, and Liquid Asset Investments.

                                      * * *

     Each Equity Series  invests in a wide array of stocks,  and no single stock
makes up more than a small fraction of any Series' total assets. Of course, each
Series' holdings are subject to change.

     Illiquid Securities.  (All Series). Illiquid securities are securities that
cannot be expected to be sold within  seven days at  approximately  the price at
which  they are  valued.  These may  include  unregistered  or other  restricted
securities  and  repurchase  agreements  maturing  in greater  than seven  days.
Illiquid  securities may also include commercial paper under section 4(2) of the
1933 Act, as amended, and Rule 144A securities  (restricted  securities that may
be traded freely among qualified  institutional  buyers pursuant to an exemption
from the registration requirements of the securities laws); these securities are
considered  illiquid  unless  NB  Management,   acting  pursuant  to  guidelines



                                       17
<PAGE>



established  by the  trustees of  Managers  Trust,  determines  they are liquid.
Generally,  foreign securities freely tradable in their principal market are not
considered  restricted or illiquid  even if they are not  registered in the U.S.
Illiquid  securities may be difficult for a Series to value or dispose of due to
the absence of an active trading market. The sale of some illiquid securities by
the Series may be subject  to legal  restrictions  which  could be costly to the
Series.

     Policies and Limitations. Each Series may invest up to 15% (10% in the case
of AMT Liquid Asset Investments) of its net assets in illiquid securities.

     Repurchase  Agreements.  (All Series). In a repurchase agreement,  a Series
purchases  securities from a bank that is a member of the Federal Reserve System
(or with respect to AMT International Investments, from a foreign bank or a U.S.
branch or agency of a foreign bank), or from a securities dealer, that agrees to
repurchase  the  securities  from the Series at a higher  price on a  designated
future date.  Repurchase  agreements  generally  are for a short period of time,
usually less than a week.  Costs,  delays, or losses could result if the selling
party to a  repurchase  agreement  becomes  bankrupt or otherwise  defaults.  NB
Management  monitors  the  creditworthiness  of  sellers.  If AMT  International
Investments  enters into a repurchase  agreement  subject to foreign law and the
counter-party  defaults,  that Series may not enjoy  protections  comparable  to
those provided to certain  repurchase  agreements under U.S.  bankruptcy law and
may suffer delays and losses in disposing of the collateral as a result.

     Policies and  Limitations.  Repurchase  agreements  with a maturity of more
than seven days are  considered to be illiquid  securities.  No Series may enter
into a  repurchase  agreement  with a maturity  of more than seven days if, as a
result,  more than 15% (10% with respect to AMT Liquid Asset Investments) of the
value of its net assets would then be invested in such repurchase agreements and
other illiquid  securities.  A Series may enter into a repurchase agreement only
if (1) the underlying  securities are of a type (excluding maturity and duration
limitations) that the Series' investment policies and limitations would allow it
to  purchase  directly,  (2) the  market  value  of the  underlying  securities,
including accrued interest, at all times equals or exceeds the repurchase price,
and (3) payment for the  underlying  securities  is made only upon  satisfactory
evidence  that the  securities  are being  held for the  Series'  account by its
custodian or a bank acting as the Series' agent.

     Securities Loans.  (All Series).  Each Series may lend securities to banks,
brokerage   firms,  or  institutional   investors  judged   creditworthy  by  NB
Management,  provided that cash or equivalent collateral, equal to at least 100%
of the market value of the loaned securities,  is continuously maintained by the
borrower  with the Series.  The Series may invest the cash  collateral  and earn
income,  or it may  receive an agreed  upon  amount of  interest  income  from a
borrower who has delivered equivalent collateral. During the time securities are
on loan, the borrower will pay the Series an amount  equivalent to any dividends
or interest paid on such  securities.  These loans are subject to termination at
the  option  of the  Series  or the  borrower.  The  Series  may pay  reasonable
administrative  and  custodial  fees  in  connection  with a loan  and may pay a
negotiated  portion of the interest earned on the cash or equivalent  collateral
to the  borrower or placing  broker.  The Series does not have the right to vote
securities on loan, but would terminate the loan and regain the right to vote if
that were  considered  important with respect to the  investment.  NB Management
believes the risk of loss on these transactions is slight because, if a borrower
were to default for any reason,  the collateral  should


                                       18
<PAGE>


satisfy the  obligation.  However,  as with other  extensions of secured credit,
loans  of  portfolio  securities  involve  some  risk of loss of  rights  in the
collateral should the borrower fail financially.

     Policies and Limitations.  Each Series may lend securities with a value not
exceeding  33-1/3%  of its  total  assets to banks,  brokerage  firms,  or other
institutional  investors  judged  creditworthy  by NB Management.  Borrowers are
required  continuously to secure their  obligations to return securities on loan
from a Series by depositing  collateral in a form  determined to be satisfactory
by the trustees of Managers Trust ("Series Trustees). The collateral, which must
be marked to market daily, must be equal to at least 100% of the market value of
the loaned  securities,  which will also be marked to market  daily.  Securities
lending by AMT  Socially  Responsive  Investments  is not  subject to the Social
Policy.

     Restricted  Securities and Rule 144A Securities.  (All Series). Each Series
may invest in restricted  securities,  which are securities that may not be sold
to the public without an effective  registration  statement  under the 1933 Act.
Before  they are  registered,  such  securities  may be sold only in a privately
negotiated  transaction  or  pursuant  to an  exemption  from  registration.  In
recognition of the increased size and liquidity of the institutional  market for
unregistered  securities  and the importance of  institutional  investors in the
formation of capital, the SEC has adopted Rule 144A under the 1933 Act, which is
designed to  facilitate  efficient  trading  among  institutional  investors  by
permitting   the  sale  of  certain   unregistered   securities   to   qualified
institutional buyers. To the extent privately placed securities held by a Series
qualify  under  Rule  144A,  and an  institutional  market  develops  for  those
securities,  the Series likely will be able to dispose of the securities without
registering  them under the 1933 Act.  To the extent that  institutional  buyers
become,  for a time,  uninterested in purchasing these securities,  investing in
Rule 144A securities  could have the effect of increasing the level of a Series'
illiquidity.  NB Management,  acting under guidelines established by the Series'
Trustees, may determine that certain securities qualified for trading under Rule
144A are liquid.  Foreign securities that are freely tradable in their principal
markets are not  considered  to be  restricted.  Regulation S under the 1933 Act
permits the sale abroad of securities  that are not  registered  for sale in the
United States.

     Where  registration  is  required,  a Series may be obligated to pay all or
part of the registration  expenses, and a considerable period may elapse between
the decision to sell and the time the Series may be permitted to sell a security
under an effective  registration  statement.  If, during such a period,  adverse
market  conditions  were to develop,  the Series might  obtain a less  favorable
price than prevailed when it decided to sell. Restricted securities for which no
market  exists  are  priced  by a  method  that  the  Series'  Trustees  believe
accurately reflect fair value.

     Policies and Limitations.  To the extent restricted  securities,  including
Rule 144A securities,  are illiquid,  purchases  thereof will be subject to each
Series'  15%  (10%  in the  case  of AMT  Liquid  Asset  Investments)  limit  on
investments in illiquid securities.

     Commercial  Paper.  (All  Series).  Commercial  paper is a short-term  debt
security issued by a corporation,  bank, municipality,  or other issuer, usually
for purposes  such as financing  current  operations.  Each Series may invest in
commercial  paper  that  cannot be resold to the  public  without  an  effective
registration  statement under the 1933 Act. While  restricted  commercial  paper
normally is 


                                       19
<PAGE>


deemed illiquid, NB Management may in certain cases determine that such paper is
liquid, pursuant to guidelines established by the Series' Trustees.

     Policies and Limitations.  Each Equity Series normally may invest up to 35%
of its net assets in debt securities,  including  commercial paper.  Except with
respect to AMT  Partners,  Mid-Cap  Growth and  International  Investments,  the
Equity Series may invest in commercial paper only if it has received the highest
rating from S&P (A-1) or Moody's  (P-1) or is deemed by NB  Management  to be of
comparable quality. AMT International  Investments may invest in such commercial
paper as a defensive measure, to increase liquidity, or as needed for segregated
accounts.

     Reverse  Repurchase  Agreements.  (All  Series).  In a  reverse  repurchase
agreement,  a Series  sells  portfolio  securities  subject to its  agreement to
repurchase the securities at a later date for a fixed price  reflecting a market
rate of interest.  Reverse repurchase  agreements may increase fluctuations in a
Series'  and its  corresponding  Portfolio's  NAV and may be viewed as a form of
leverage.  There  is a risk  that  the  counter-party  to a  reverse  repurchase
agreement will be unable or unwilling to complete the  transaction as scheduled,
which  may  result  in  losses  to  the  Series.  NB  Management   monitors  the
creditworthiness of counterparties to reverse repurchase agreements.

     Policies and  Limitations.  Reverse  repurchase  agreements  are considered
borrowings  for purposes of each  Series'  investment  limitations  and policies
concerning  borrowings.  While a reverse repurchase agreement is outstanding,  a
Series  will  deposit  in a  segregated  account  with  its  custodian  cash  or
appropriate  liquid  securities,  marked to market daily,  in an amount at least
equal to each Series' obligations under the agreement.

     Banking  and  Savings  Institution  Securities.  These  include  CDs,  time
deposits,  bankers'  acceptances,   and  other  short-term  and  long-term  debt
obligations  issued  by  commercial  banks  and  savings  institutions.  CDs are
receipts for funds deposited for a specified  period of time at a specified rate
of return;  time deposits generally are similar to CDs, but are  uncertificated.
Bankers'  acceptances  are time drafts drawn on  commercial  banks by borrowers,
usually in connection with international commercial transactions.  The CDs, time
deposits,  and bankers'  acceptances in which a Series invests typically are not
covered by deposit insurance.

     Policies and  Limitations.  AMT Liquid Asset  Investments may invest 25% or
more of its  total  assets in CDs or  banker's  acceptances  issued by  domestic
branches of U.S.  banks.  CDs are  interpreted to include  similar types of time
deposits.  The Series may invest in  securities  issued by a commercial  bank or
savings  institution  only if (1) the bank or institution has total assets of at
least $1,000,000,000, (2) the bank or institution is on NB Management's approved
list, and (3) in the case of a foreign bank or institution,  the securities are,
in NB Management's  opinion, of an investment quality comparable with other debt
securities  that  may be  purchased  by the  Series.  These  limitations  do not
prohibit investments in securities issued by foreign branches of U.S. banks that
meet the foregoing requirements.

     Each Equity Series will normally limit its investments in debt  securities,
including banking and savings institution securities, to no more than 35% of its
total assets.


                                       20
<PAGE>


     Leverage. (AMT International Investments).  The Series may make investments
when borrowings are  outstanding.  Leverage creates an opportunity for increased
net income but,  at the same time,  creates  special  risk  considerations.  For
example,  leveraging  may amplify  changes in the Series' and its  corresponding
Portfolio's  NAVs.  Although the principal of such borrowings will be fixed, the
Series' assets may change in value during the time the borrowing is outstanding.
Leverage from borrowing  creates interest expenses for the Series. To the extent
the income  derived from  securities  purchased  with borrowed funds exceeds the
interest  the Series  will have to pay,  the  Series' net income will be greater
than it would be if leveraging were not used. Conversely, if the income from the
assets  obtained  with  borrowed  funds is not  sufficient  to cover the cost of
leveraging,  the net income of the Series will be less than if  leveraging  were
not used,  and therefore the amount  available for  distribution  to the Series'
shareholders as dividends will be reduced.

     Policies  and  Limitations.  Generally,  the Series  does not intend to use
leverage for  investment  purposes.  It may,  however,  use leverage to purchase
securities needed to close out short sales entered into for hedging purposes and
to facilitate other hedging  transactions.  Reverse repurchase agreements create
leverage and are considered  borrowings  for purposes of the Series'  investment
limitations.

     Foreign  Securities.   (All  Series).   Each  Series  may  invest  in  U.S.
dollar-denominated  securities  issued  by  foreign  issuers  (including  banks,
governments, and quasi-governmental  organizations) and foreign branches of U.S.
banks,  including  negotiable CDs,  banker's  acceptances and commercial  paper.
These  investments  are subject to each Series' quality and, in the case of each
Income Series, its maturity or duration standards.

     While  investments  in foreign  securities  are  intended to reduce risk by
providing  further  diversification  (except with  respect to AMT  International
Investments), such investments involve sovereign and other risks, in addition to
the credit and market risks normally associated with domestic securities.  These
additional  risks  include the  possibility  of adverse  political  and economic
developments (including political instability,  nationalization,  expropriation,
or confiscatory  taxation) and the potentially adverse effects of unavailability
of public information regarding issuers, less governmental supervision regarding
financial markets,  reduced liquidity of certain financial markets, and the lack
of uniform accounting,  auditing,  and financial standards or the application of
standards  that are different or less stringent than those applied in the United
States.

     Each Series (except AMT Liquid Asset Investments) also may invest in equity
(except AMT Limited Maturity Bond Investments),  debt, or other income-producing
securities that are denominated in or indexed to foreign currencies,  including,
but not limited to (1) common and preferred  stocks,  with respect to all Series
except  AMT  Limited  Maturity  Bond  Investments,  (2) CDs,  commercial  paper,
fixed-time  deposits,  and bankers'  acceptances  issued by foreign  banks,  (3)
obligations of other corporations,  and (4) obligations of foreign  governments,
or their subdivisions, agencies, and instrumentalities,  international agencies,
and supranational entities. Investing in foreign currency denominated securities
includes  the special  risks  associated  with  investing  in  non-U.S.  issuers
described in the  preceding  paragraph and the  additional  risks of (1) adverse
changes in foreign  exchange  rates,  and (2) adverse  changes in  investment or
exchange control  regulations  (which could prevent cash from being brought back
to the United States).  Additionally,  dividends and interest payable on foreign
securities


                                       21
<PAGE>


(and gains  realized on  disposition  thereof) may be subject to foreign  taxes,
including  taxes withheld from those  payments,  and there are generally  higher
commission rates on foreign portfolio transactions. Fixed commissions on foreign
securities  exchanges are generally  higher than negotiated  commissions on U.S.
exchanges,  although  each Series  endeavors to achieve the most  favorable  net
results on portfolio transactions.

     Foreign  securities often trade with less frequency and in less volume than
domestic  securities and may exhibit greater price volatility.  Additional costs
associated with an investment in foreign securities may include higher custodian
fees than apply to domestic  custodial  arrangements  and  transaction  costs of
foreign currency conversions. Changes in foreign exchange rates also will affect
the value of securities  denominated or quoted in currencies other than the U.S.
dollar.

     Foreign  markets also have different  clearance and settlement  procedures,
and in certain markets,  there have been times when settlements have been unable
to keep pace with the volume of securities transactions,  making it difficult to
conduct  such  transactions.  Delays in  settlement  could  result in  temporary
periods when a portion of the assets of a Series is uninvested  and no return is
earned thereon.  The inability of a Series to make intended  security  purchases
due to settlement  problems could cause a Series to miss  attractive  investment
opportunities.  Inability to dispose of portfolio  securities  due to settlement
problems could result either in losses to a Series due to subsequent declines in
value of the portfolio  securities,  or, if a Series has entered into a contract
to sell the securities, could result in possible liability to the purchaser.

     Prices of foreign  securities and exchange rates for foreign currencies may
be affected by the interest rates  prevailing in other  countries.  The interest
rates in other  countries  are often  affected by local  factors,  including the
strength of the local economy, the demand for borrowing, the government's fiscal
and monetary  policies,  and the international  balance of payments.  Individual
foreign  economies may differ  favorably or unfavorably from the U.S. economy in
such  respects  as  gross   national   product,   rate  of  inflation,   capital
reinvestment, resource self-sufficiency and balance of payments position.

     The Series (except AMT Liquid Asset and Limited Maturity Bond  Investments)
may invest in ADRs,  EDRs,  GDRs, and IDRs. ADRs (sponsored or unsponsored)  are
receipts  typically  issued  by a U.S.  bank or  trust  company  evidencing  its
ownership of the underlying  foreign  securities.  Most ADRs are  denominated in
U.S. dollars and are traded on a U.S. stock exchange.  Issuers of the securities
underlying sponsored ADRs, but not unsponsored ADRs, are contractually obligated
to disclose  material  information in the United States.  Therefore,  the market
value of unsponsored ADRs may not reflect the effect of such  information.  EDRs
and IDRs are  receipts  typically  issued by a  European  bank or trust  company
evidencing its ownership of the underlying foreign securities. GDRs are receipts
issued by either a U.S. or non-U.S. banking institution evidencing its ownership
of the underlying foreign securities and are often denominated in U.S. dollars.

     Policies and Limitations. In order to limit the risks inherent in investing
in foreign currency  denominated  securities,  AMT Balanced  (equity  securities
portion),  Growth,  Guardian,  Partners, and Socially Responsive Investments may
not  purchase  any such  security  if, as a  result,  more than 10% of its total
assets (taken at market value) would be invested in foreign currency denominated


                                       22
<PAGE>


securities.  AMT Limited Maturity Bond  Investments may not purchase  securities
denominated in or indexed to foreign currencies,  if, as a result, more than 25%
of its  total  assets  (taken  at  market  value)  would  be  invested  in  such
securities.  AMT Mid-Cap Growth  Investments may not purchase  foreign  currency
denominated securities if, as a result, more than 20% of its total assets (taken
at market value) would be invested in such securities. Within those limitations,
however,  no Series is  restricted  in the  amount it may  invest in  securities
denominated in any one foreign currency.  AMT International  Investments invests
primarily in foreign securities.  AMT Liquid Asset Investments may not invest in
foreign currency-denominated securities.

     Investments  in securities  of foreign  issuers are subject to each Series'
quality standards. Each Series (except AMT International Investments) may invest
only in  securities of issuers in countries  whose  governments  are  considered
stable by NB Management.

     Japanese Investments.  (AMT International  Investments).  All of the Series
may invest in foreign securities, including securities of Japanese issuers. From
time to time, AMT International  Investments may invest a significant portion of
its assets in securities of Japanese issuers.  The performance of the Series may
therefore be significantly  affected by events  influencing the Japanese economy
and the exchange  rate between the Japanese yen and the U.S.  dollar.  Japan has
experienced  a severe  recession,  including a decline in real estate values and
other  events  that  adversely  affected  the balance  sheets of many  financial
institutions  and  indicate  that  there  may be  structural  weaknesses  in the
Japanese financial system. The effects of this economic downturn may be felt for
a considerable  period and are being  exacerbated by the currency exchange rate.
Japan is heavily  dependent  on foreign oil.  Japan is located in a  seismically
active  area,  and severe  earthquakes  may  damage  important  elements  of the
country's  infrastructure.  Japan's  economic  prospects  may be affected by the
political and military situations of its near neighbors, notably North and South
Korea, China and Russia.

     Variable  or  Floating  Rate  Securities;   Demand  and  Put  Features  and
Guarantees.  (All  Series).  Variable  rate  securities  provide  for  automatic
adjustment of the interest rate at fixed intervals  (e.g.,  daily,  monthly,  or
semi-annually); floating rate securities provide for automatic adjustment of the
interest rate whenever a specified interest rate or index changes.  The interest
rate on variable and floating rate securities  (collectively,  "Adjustable  Rate
Securities")  ordinarily is determined by reference to a particular bank's prime
rate, the 90-day U.S. Treasury Bill rate, the rate of return on commercial paper
or bank CDs, an index of  short-term  tax-exempt  rates or some other  objective
measure.

     Adjustable Rate Securities  frequently  permit the holder to demand payment
of the  obligations'  principal and accrued interest at any time or at specified
intervals  not  exceeding one year.  The demand  feature  usually is backed by a
credit instrument (e.g., a bank letter of credit) from a creditworthy issuer and
sometimes  by  insurance  from a  creditworthy  insurer.  Without  these  credit
enhancements,  some  Adjustable  Rate  Securities  might  not meet  the  quality
standards  applicable to obligations  purchased by the Series.  Accordingly,  in
purchasing   these   securities,   each   Series   relies   primarily   on   the
creditworthiness  of the credit instrument  issuer or the insurer.  A Series can
also buy fixed rate  securities  accompanied by demand  features or put options,
permitting  the Series to sell the  security  to the issuer or third  party at a
specified price. A Series may rely on the  creditworthiness of issuers of credit
enhancements in purchasing these securities.


                                       23
<PAGE>


     Among the Adjustable Rate Securities in which AMT Liquid Asset  Investments
may invest are so-called  guaranteed  investment  contracts  ("GICs")  issued by
insurance  companies.  In the  event  of  insolvency  of the  issuing  insurance
company,  the  ability  of the  Series to  recover  its assets may depend on the
treatment of GICs under state insurance laws.

     Policies  and  Limitations.  Except for AMT Liquid  Asset  Investments,  no
Series  may  invest  more than 5% of its total  assets in  securities  backed by
credit instruments from any one issuer or by insurance from any one insurer. For
purposes of this limitation, each Series except for AMT Liquid Asset Investments
excludes  securities that do not rely on the credit  instrument or insurance for
their ratings, i.e., stand on their own credit. AMT Liquid Asset Investments may
invest in  securities  subject to demand  features or guarantees as permitted by
Rule 2a-7 under the 1940 Act. Each Equity  Series  normally may invest up to 35%
of its total  assets in debt  securities,  including  variable or floating  rate
securities.

     For purposes of  determining  its  dollar-weighted  average  maturity,  AMT
Liquid  Asset  Investments  calculates  the  remaining  maturity of variable and
floating  rate  instruments  as  provided  in Rule 2a-7  under the 1940 Act.  In
calculating its  dollar-weighted  average maturity and duration,  each Series is
permitted to treat  certain  Adjustable  Rate  Securities  as maturing on a date
prior to the date on which principal must  unconditionally  be paid. In applying
such maturity shortening  devices, NB Management  considers whether the interest
rate reset is expected to cause the security to trade at  approximately  its par
value.

     GICs are generally regarded as illiquid. Thus, AMT Liquid Asset Investments
may not  invest in such GICs if, as a result,  more than 10% of the value of its
net assets would then be invested in such GICs and other illiquid securities.

     Mortgage-Backed  Securities.  (AMT Liquid Asset,  Limited Maturity Bond and
Balanced Investments).  Mortgage-backed  securities represent direct or indirect
participations  in, or are secured by and payable from, pools of mortgage loans.
They may be issued or guaranteed by a U.S.  Government agency or instrumentality
such as the GNMA, Fannie Mae, and Freddie Mac, though not necessarily  backed by
the full  faith and  credit of the  United  States,  or may be issued by private
issuers.  Private issuers are generally originators of and investors in mortgage
loans and include savings  associations,  mortgage  bankers,  commercial  banks,
investment  bankers,  and  special  purpose  entities.  Private  mortgage-backed
securities may be supported by U.S. Government Agency mortgage-backed securities
or some form of non-governmental credit enhancement.

     Mortgage-backed  securities  may have either fixed or  adjustable  interest
rates. Tax or regulatory  changes may adversely  affect the mortgage  securities
market. In addition, changes in the market's perception of the issuer may affect
the value of mortgage-backed  securities.  The rate of return on mortgage-backed
securities may be affected by prepayments of principal on the underlying  loans,
which  generally  increase as market interest rates decline;  as a result,  when
interest rates decline, holders of these securities normally do not benefit from
appreciation in market value to the same extent as holders of other non-callable
debt securities.


                                       24
<PAGE>


     Because many mortgages are repaid early,  the actual  maturity and duration
of  mortgage-backed  securities  are  typically  shorter than their stated final
maturity and their  duration  calculated  solely on the basis of the stated life
and payment schedule.  In calculating its  dollar-weighted  average maturity and
duration, a Series may apply certain industry conventions regarding the maturity
and duration of  mortgage-backed  instruments.  Different analysts use different
models  and  assumptions  in making  these  determinations.  The  Series  use an
approach  that NB  Management  believes is  reasonable  in light of all relevant
circumstances.  If this  determination  is not borne out in  practice,  it could
positively  or  negatively  affect  the value of the  Series  and  corresponding
Portfolio when market  interest rates change.  Increasing  market interest rates
generally  extend  the  effective  maturities  of  mortgage-backed   securities,
increasing their sensitivity to interest rate changes.

     Mortgage-backed  securities  may be  issued  in the form of  collateralized
mortgage obligations ("CMOs") or collateralized  mortgage-backed bonds ("CBOs").
CMOs are obligations that are fully collateralized, directly or indirectly, by a
pool of mortgages on which payments of principal and interest are passed through
to the holders of the CMOs, although not necessarily on a pro rata basis, on the
same schedule as they are received.  CBOs are general  obligations of the issuer
that are fully collateralized,  directly or indirectly,  by a pool of mortgages.
The mortgages  serve as collateral for the issuer's  payment  obligations on the
bonds,  but  interest and  principal  payments on the  mortgages  are not passed
through  either  directly  (as with  mortgage-backed  "pass-through"  securities
issued or guaranteed by U.S. Government agencies or  instrumentalities)  or on a
modified basis (as with CMOs). Accordingly,  a change in the rate of prepayments
on the pool of mortgages could change the effective  maturity or the duration of
a CMO but not that of a CBO (although,  like many bonds, CBOs may be callable by
the issuer prior to maturity).  To the extent that rising  interest  rates cause
prepayments  to occur at a slower than  expected  rate, a CMO could be converted
into a longer-term security that is subject to greater risk of price volatility.

     Governmental,  government-related, and private entities (such as commercial
banks,  savings  institutions,  private mortgage insurance  companies,  mortgage
bankers,   and   other   secondary   market   issuers),   including   securities
broker-dealers and special purpose entities that generally are affiliates of the
foregoing established to issue such securities may create mortgage loan pools to
back CMOs and CBOs. Such issuers may be the originators  and/or servicers of the
underlying  mortgage  loans  as well as the  guarantors  of the  mortgage-backed
securities.  Pools created by non-governmental  issuers generally offer a higher
rate of interest than  government  and  government-related  pools because of the
absence of direct or indirect government or agency guarantees.  Various forms of
insurance or guarantees,  including  individual  loan,  title,  pool, and hazard
insurance,  and letters of credit,  may support  timely  payment of interest and
principal of non-governmental  pools. The insurance and guarantees are issued by
governmental entities, private insurers, and the mortgage poolers. NB Management
considers such insurance and guarantees,  as well as the creditworthiness of the
issuers  thereof,  in  determining  whether a  mortgage-backed  security meets a
Series' investment quality standards. There can be no assurance that the private
insurers or guarantors can meet their obligations  under the insurance  policies
or  guarantee  arrangements.  A  Portfolio  may buy  mortgage-backed  securities
without insurance or guarantees, if NB Management determines that the securities
meet the Portfolio's quality standards.  NB Management will, consistent with the
Portfolio's  investment   objectives,   policies  and  limitations  and  quality
standards, 


                                       25
<PAGE>


consider making investments in new types of  mortgage-backed  securities as such
securities are developed and offered to investors.

     Policies  and  Limitations.  A  Series  may  not  purchase  mortgage-backed
securities that, in NB Management's  opinion, are illiquid if, as a result, more
than 15% (10% in the case of AMT Liquid Asset  Investments)  of the value of the
Series' net assets would be invested in illiquid securities.

     Dollar Rolls.  (AMT Limited Maturity Bond and Balanced  Investments).  In a
"dollar roll",  a Series sells  securities for delivery in the current month and
simultaneously  agrees to repurchase  substantially similar (i.e., same type and
coupon)  securities on a specified  future date from the same party.  During the
period before the repurchase, the Series forgoes principal and interest payments
on the  securities.  The Series is  compensated  by the  difference  between the
current  sales  price and the  forward  price  for the  future  purchase  (often
referred  to as the  "drop"),  as well as by the  interest  earned  on the  cash
proceeds  of the initial  sale.  Dollar  rolls may  increase  fluctuations  in a
Series' and its  corresponding  Portfolio's  NAVs and may be viewed as a form of
leverage.  A "covered roll" is a specific type of dollar roll for which there is
an  offsetting  cash  position or a  cash-equivalent  securities  position  that
matures (or can be sold and settled) on or before the forward settlement date of
the  dollar  roll  transaction.  There is a risk that the  counterparty  will be
unable or unwilling to complete the  transaction as scheduled,  which may result
in  losses  to the  Series.  NB  Management  monitors  the  creditworthiness  of
counterparties to dollar rolls.

     Policies  and  Limitations.  Dollar  rolls are  considered  borrowings  for
purposes  of  each  Series'  investment  policies  and  limitations   concerning
borrowings.

     Forward   Commitments  (AMT  International   Investments)  and  When-Issued
Securities.  (AMT  International,  Limited  Maturity  Bond,  and Balanced  (debt
securities portion) Investments). The Series may purchase securities (including,
with  respect  to  AMT  Limited   Maturity   Bond  and   Balanced   Investments,
mortgage-backed   securities   such  as  GNMA,   Fannie  Mae,  and  Freddie  Mac
certificates)  on a  when-issued  basis and AMT  International  Investments  may
purchase or sell securities on a forward  commitment basis.  These  transactions
involve a commitment by a Series to purchase or sell securities at a future date
(ordinarily  within  two  months  although  the  Series  may  agree  to a longer
settlement period). The price of the underlying securities (usually expressed in
terms of yield) and the date when the securities  will be delivered and paid for
(the  settlement  date) are  fixed at the time the  transaction  is  negotiated.
When-issued  purchases  and  forward  commitment   transactions  are  negotiated
directly with the other party, and such commitments are not traded on exchanges.

     When-issued  purchases and forward commitment  transactions enable a Series
to "lock in" what NB Management believes to be an attractive price or yield on a
particular  security  for a period  of time,  regardless  of future  changes  in
interest  rates.  For instance,  in periods of rising interest rates and falling
prices, AMT International Investments might sell securities it owns on a forward
commitment basis to limit its exposure to falling prices.  In periods of falling
interest  rates and rising  prices,  a Series  might  purchase  a security  on a
when-issued or forward  commitment  basis and sell a similar  security to settle
such purchase,  thereby obtaining the benefit of currently higher yields. If the
seller fails to complete the sale, the Series may lose the opportunity to obtain
a favorable price.


                                       26
<PAGE>


     The value of securities  purchased on a when-issued  or forward  commitment
basis  and any  subsequent  fluctuations  in their  value are  reflected  in the
computation  of a Series' NAV starting on the date of the  agreement to purchase
the  securities.  Because the Series has not yet paid for the  securities,  this
produces an effect  similar to leverage.  A Series does not earn interest on the
securities it has committed to purchase until they are paid for and delivered on
the  settlement  date.  When  AMT  International  Investments  makes  a  forward
commitment  to sell  securities  it  owns,  the  proceeds  to be  received  upon
settlement are included in the Series' assets.  Fluctuations in the market value
of the underlying securities are not reflected in the Series' NAV as long as the
commitment to sell remains in effect.

     Policies  and  Limitations.   A  Series  will  purchase   securities  on  a
when-issued  basis or purchase or sell securities on a forward  commitment basis
only with the intention of completing the transaction and actually purchasing or
selling the securities.  If deemed advisable as a matter of investment strategy,
however,  a Series may dispose of or renegotiate a commitment  after it has been
entered  into. A Series also may sell  securities  it has  committed to purchase
before those  securities are delivered to the Series on the  settlement  date. A
Series may realize a capital gain or loss in connection with these transactions.

     When a Series purchases securities on a when-issued basis, it will deposit,
in a segregated account with its custodian,  until payment is made,  appropriate
liquid securities having a value (determined daily) at least equal to the amount
of the Series' purchase commitments. In the case of a forward commitment to sell
portfolio   securities,   the  custodian  will  hold  the  portfolio  securities
themselves in a segregated  account while the commitment is  outstanding.  These
procedures are designed to ensure that a Series will maintain  sufficient assets
at all times to cover its obligations  under  when-issued  purchases and forward
commitment transactions.

         Futures, Options on Futures, Options on Securities and Indices,
                    Forward Contracts, and Options on Foreign
               Currencies (collectively, "Financial Instruments")

     Futures  Contracts and Options Thereon.  (The Equity Series and AMT Limited
Maturity Bond and Balanced  Investments).  Each of AMT Socially  Responsive  and
Mid-Cap  Growth   Investments  may  purchase  and  sell  interest  rate  futures
contracts,  stock and bond index futures contracts, and foreign currency futures
contracts  and may  purchase  and sell  options  thereon  in an attempt to hedge
against changes in the prices of securities or, in the case of foreign  currency
futures and options  thereon,  to hedge against  changes in prevailing  currency
exchange  rates.  Because the  futures  markets may be more liquid than the cash
markets,  the use of futures  contracts permits each Series to enhance portfolio
liquidity and maintain a defensive  position  without  having to sell  portfolio
securities.  Each Series views  investment in (i) interest  rate and  securities
index  futures  and options  thereon as a maturity  management  device  and/or a
device to reduce risk or preserve total return in an adverse environment for the
hedged  securities,  and (ii) foreign  currency futures and options thereon as a
means of establishing  more definitely the effective  return on, or the purchase
price of, securities denominated in foreign currencies that are held or intended
to be acquired by the Series.


                                       27
<PAGE>


     AMT Limited  Maturity Bond and Balanced  Investments  may purchase and sell
interest rate and bond index  futures  contracts  and options  thereon,  and may
purchase and sell foreign currency  futures  contracts and options thereon in an
attempt to hedge against  changes in the prices of securities or, in the case of
foreign  currency  futures  and options  thereon,  to hedge  against  changes in
prevailing  currency  exchange  rates.  Because the futures  markets may be more
liquid  than the cash  markets,  the use of futures  permits a Series to enhance
portfolio  liquidity and maintain a defensive  position  without  having to sell
portfolio  securities.  The Series view investment in (1) interest rate and bond
index futures and options  thereon as a maturity or duration  management  device
and/or a device to reduce risk and preserve total return in an adverse  interest
rate environment for the hedged  securities and (2) foreign currency futures and
options thereon as a means of establishing  more definitely the effective return
on, or the purchase price of, securities  denominated in foreign currencies held
or intended to be acquired by the Series.

     AMT   International   Investments  may  enter  into  futures  contracts  on
currencies,  debt securities,  interest rates,  and securities  indices that are
traded on  exchanges  regulated  by the  Commodity  Futures  Trading  Commission
("CFTC") or on foreign exchanges. Trading on foreign exchanges is subject to the
legal  requirements of the  jurisdiction in which the exchange is located and to
the rules of such foreign exchange.

     AMT International Investments may sell futures contracts in order to offset
a possible  decline  in the value of its  portfolio  securities.  When a futures
contract is sold by the Series, the value of the contract will tend to rise when
the value of the  portfolio  securities  declines and will tend to fall when the
value of such securities increases. The Series may purchase futures contracts in
order to fix what NB Management  believes to be a favorable price for securities
the Series  intends to  purchase.  If a futures  contract  is  purchased  by the
Series,  the value of the contract will tend to change  together with changes in
the value of such  securities.  To  compensate  for  differences  in  historical
volatility  between positions AMT International  Investments wishes to hedge and
the standardized  futures contracts  available to it, the Series may purchase or
sell futures  contracts  with a greater or lesser value than the  securities  it
wishes to hedge.

     With respect to currency futures, AMT International  Investments may sell a
futures  contract  or a call  option,  or it may  purchase  a put option on such
futures  contract,  if NB  Management  anticipates  that  exchange  rates  for a
particular  currency will fall. Such a transaction  will be used as a hedge (or,
in the case of a sale of a call option,  a partial  hedge) against a decrease in
the value of portfolio securities denominated in that currency. If NB Management
anticipates that a particular currency will rise, AMT International  Investments
may purchase a currency  futures contract or a call option to protect against an
increase in the price of securities  which are  denominated in that currency and
which the Series  intends to purchase.  The Series may also  purchase a currency
futures  contract or a call  option  thereon for  non-hedging  purposes  when NB
Management  anticipates that a particular currency will appreciate in value, but
securities  denominated in that currency do not present an attractive investment
and are not included in the Series.

     The Equity Series may purchase and sell stock index futures contracts,  and
may purchase and sell options  thereon.  For purposes of managing cash flow, the
managers may use such  futures and


                                       28
<PAGE>


options to increase  the Series'  exposure to the  performance  of a  recognized
securities index, such as the S&P "500" Index.

     A "sale" of a futures contract (or a "short" futures  position) entails the
assumption  of a contractual  obligation  to deliver the  securities or currency
underlying  the  contract at a specified  price at a specified  future  time.  A
"purchase"  of a futures  contract (or a "long"  futures  position)  entails the
assumption  of a contractual  obligation  to acquire the  securities or currency
underlying the contract at a specified price at a specified future time. Certain
futures,  including  stock and bond  index  futures,  are  settled on a net cash
payment basis rather than by the sale and delivery of the securities  underlying
the futures.

     U.S.  futures  contracts  (except certain  currency  futures) are traded on
exchanges that have been designated as "contract  markets" by the CFTC;  futures
transactions  must be executed through a futures  commission  merchant that is a
member of the relevant  contract market.  In both U.S. and foreign  markets,  an
exchange's  affiliated  clearing  organization  guarantees  performance  of  the
contracts between the clearing members of the exchange.

     Although  futures  contracts by their terms may require the actual delivery
or  acquisition  of the  underlying  securities  or currency,  in most cases the
contractual  obligation is extinguished by being offset before the expiration of
the contract. A futures position is offset by buying (to offset an earlier sale)
or selling (to offset an earlier purchase) an identical futures contract calling
for  delivery  in the same  month.  This may  result in a profit or loss.  While
futures  contracts  entered into by a Series will usually be  liquidated in this
manner,  the Series may instead make or take delivery of  underlying  securities
whenever it appears economically advantageous for it to do so.

     "Margin"  with  respect to a futures  contract is the amount of assets that
must be deposited by a Series with, or for the benefit of, a futures  commission
merchant in order to initiate and maintain the Series'  futures  positions.  The
margin  deposit  made by the  Series  when it  enters  into a  futures  contract
("initial margin") is intended to assure its performance of the contract. If the
price of the futures contract changes -- increases in the case of a short (sale)
position or decreases in the case of a long  (purchase)  position -- so that the
unrealized  loss on the contract causes the margin deposit not to satisfy margin
requirements,  the Series will be required to make an additional  margin deposit
("variation  margin").  However,  if  favorable  price  changes  in the  futures
contract cause the margin deposit to exceed the required margin, the excess will
be paid to the Series.  In computing  their NAVs,  the Series mark to market the
value of their  open  futures  positions.  Each  Series  also must  make  margin
deposits  with  respect to options on futures  that it has written (but not with
respect to options on futures that it has purchased).  If the futures commission
merchant  holding the margin  deposit goes  bankrupt,  the Series could suffer a
delay in recovering its funds and could ultimately suffer a loss.

     An option on a futures  contract  gives the purchaser the right,  in return
for the premium  paid,  to assume a position in the contract (a long position if
the option is a call and a short position if the option is a put) at a specified
exercise price at any time during the option exercise period.  The writer of the
option is required  upon  exercise to assume a short  futures  position  (if the
option is a call) or a long  futures  position  (if the  option is a put).  Upon
exercise of the option,  the  accumulated  cash balance in


                                       29
<PAGE>


the writer's  futures  margin  account is delivered to the holder of the option.
That  balance  represents  the amount by which the market  price of the  futures
contract at exercise  exceeds,  in the case of a call,  or is less than,  in the
case of a put,  the  exercise  price of the  option.  Options  on  futures  have
characteristics  and risks similar to those of securities  options, as discussed
herein.

     Although  each  Series  believes  that the use of  futures  contracts  will
benefit  it, if NB  Management's  judgment  about the general  direction  of the
markets or about  interest  rate or currency  exchange rate trends is incorrect,
the Series' (and corresponding  Portfolio's)  overall return would be lower than
if it had not entered into any such contracts.  Further,  an appropriate futures
contract may not be available even if the portfolio manager wishes to enter into
one. The prices of futures  contracts are volatile and are  influenced by, among
other things,  actual and anticipated  changes in interest or currency  exchange
rates,  which in turn are  affected  by  fiscal  and  monetary  policies  and by
national  and  international   political  and  economic  events.  At  best,  the
correlation  between  changes in prices of futures  contracts  and of securities
being hedged can be only approximate due to differences  between the futures and
securities   markets  or  differences   between  the  securities  or  currencies
underlying  a  Series'  futures  position  and the  securities  held by or to be
purchased  for the Series.  The  currency  futures  market may be  dominated  by
short-term  traders seeking to profit from changes in exchange rates. This would
reduce the value of such contracts  used for hedging  purposes over a short-term
period.  Such distortions are generally minor and would diminish as the contract
approaches maturity.

     Because of the low margin deposits  required,  futures trading  involves an
extremely  high  degree of  leverage;  as a result,  a  relatively  small  price
movement in a futures contract may result in immediate and substantial  loss, or
gain, to the investor.  Losses that may arise from certain futures  transactions
are potentially unlimited.

     Most U.S. futures exchanges limit the amount of fluctuation in the price of
a futures contract or option thereon during a single trading day; once the daily
limit has been reached, no trades may be made on that day at a price beyond that
limit. The daily limit governs only price movements during a particular  trading
day, however;  it thus does not limit potential losses. In fact, it may increase
the  risk of loss,  because  prices  can move to the  daily  limit  for  several
consecutive  trading  days  with  little  or  no  trading,   thereby  preventing
liquidation of unfavorable  futures and options positions and subjecting traders
to substantial losses. If this were to happen with respect to a position held by
a Series,  it could  (depending  on the size of the  position)  have an  adverse
impact on the NAV of the Series (and corresponding Portfolio).

     Policies  and  Limitations.  AMT  Socially  Responsive  and Mid-Cap  Growth
Investments  may purchase and sell futures  contracts  and may purchase and sell
options  thereon  in an  attempt  to hedge  against  changes  in the  prices  of
securities or, in the case of foreign currency  futures and options thereon,  to
hedge against prevailing  currency exchange rates. The Series does not engage in
transactions  in futures  and  options on futures  for  speculation.  The use of
futures and options on futures by AMT  Socially  Responsive  Investments  is not
subject to the Social Policy.

     AMT  International  Investments may purchase and sell futures for bona fide
hedging  purposes,  as defined in regulations  of the CFTC, and for  non-hedging
purposes  (i.e., in an effort to


                                       30
<PAGE>


enhance income).  The Series may also purchase and write put and call options on
such futures contracts for bona fide hedging and non-hedging purposes.

     The Equity  Series  Investments  may purchase and sell stock index  futures
contracts,  and may purchase and sell options thereon.  For purposes of managing
cash flow, the managers may use such futures and options to increase the Series'
exposure to the performance of a recognized  securities  index,  such as the S&P
"500" Index.

     AMT Limited  Maturity Bond and Balanced  Investments  may purchase and sell
interest rate and bond index  futures and may purchase and sell options  thereon
in an attempt to hedge  against  changes in  securities  prices  resulting  from
changes in prevailing  interest  rates.  The Series  engage in foreign  currency
futures  and  options  transactions  in an attempt to hedge  against  changes in
prevailing  currency  exchange rates.  Neither Series engages in transactions in
futures or options thereon for speculation.

     Call  Options  on   Securities.   (All  Series   except  AMT  Liquid  Asset
Investments).  AMT Socially Responsive,  Mid-Cap Growth,  Limited Maturity Bond,
Balanced and  International  Investments  may write covered call options and may
purchase call options on securities.  Each of the other Series may write covered
call options and may purchase call options in related closing transactions.  The
purpose of writing call options is to hedge (i.e., to reduce,  at least in part,
the effect of price fluctuations of securities held by the Series on the Series'
and its  corresponding  Portfolio's  NAVs) or to earn premium income.  Portfolio
securities  on which call  options may be written and  purchased by a Series are
purchased solely on the basis of investment  considerations  consistent with the
Series' investment objective.

     When a Series writes a call option, it is obligated to sell a security to a
purchaser at a specified price at any time until a certain date if the purchaser
decides to exercise  the option.  The Series  receives a premium for writing the
call option.  When writing call options,  each Series writes only "covered" call
options on  securities  it owns.  So long as the  obligation  of the call option
continues,  the Series may be  assigned  an  exercise  notice,  requiring  it to
deliver the  underlying  security  against  payment of the exercise  price.  The
Series may be obligated to deliver securities  underlying an option at less than
the market price.

     When a Series  purchases a call option,  it pays a premium for the right to
purchase a security from the writer at a specified price until a specified date.
A Series  would  purchase a call  option to protect  against an  increase in the
price of  securities  it intends to purchase or to offset a  previously  written
call option.

     The writing of covered call options is a conservative  investment technique
that is believed to involve  relatively little risk, but is capable of enhancing
a Series' total return. When writing a covered call option, a Series , in return
for the premium,  gives up the  opportunity  for profit from a price increase in
the underlying  security above the exercise  price,  but conversely  retains the
risk of loss  should  the  price of the  security  decline.  When  writing a put
option, a Series, in return for the


                                       31
<PAGE>


premium, takes the risk that it must purchase the underlying security at a price
which may be higher than the current market price of the security.

     If a call option that a Series has written expires unexercised,  the Series
will  realize a gain in the  amount of the  premium;  however,  that gain may be
offset by a decline in the market value of the  underlying  security  during the
option period.  If the call option is exercised,  the Series will realize a gain
or loss from the sale of the underlying security.

     Policies  and   Limitations.   Income  Series   (except  AMT  Liquid  Asset
Investments).  Each Series may write  covered call options and may purchase call
options on debt  securities  in its  portfolio or on foreign  currencies  in its
portfolio for hedging  purposes.  Each Series may write covered call options for
the  purpose of  producing  income.  Each  Series  will write a call option on a
security  only if it holds that  security or currency or has the right to obtain
the security or currency at no additional cost.

     Equity Series.  Each Series may write covered call options and may purchase
call options in related closing transactions.  Each Series writes only "covered"
call  options on  securities  it owns (in  contrast to the writing of "naked" or
uncovered call options, which the Series will not do).

     A Series would  purchase a call option to offset a previously  written call
option. Each of AMT Socially Responsive,  Mid-Cap Growth,  Limited Maturity Bond
and Balanced  Investments  also may purchase a call option to protect against an
increase in the price of the securities it intends to purchase.  The use of call
options on securities by AMT Socially  Responsive  Investments is not subject to
the Social Policy.  AMT International  Investments may purchase call options for
hedging or non-hedging purposes.

     Put  Options on  Securities.  (AMT  Socially  Responsive,  Mid-Cap  Growth,
International,  Limited Maturity Bond and Balanced  Investments).  Each of these
Series may write and purchase put options on securities.

     The Series will receive a premium for writing a put option, which obligates
the Series to acquire a security at a certain  price at any time until a certain
date if the  purchaser  decides  to  exercise  the  option.  The  Series  may be
obligated to purchase the underlying security at more than its current value.

     When a Series  purchases a put option,  it pays a premium to the writer for
the right to sell a security  to the writer for a  specified  amount at any time
until a certain date. The Series would purchase a put option in order to protect
itself against a decline in the market value of a security it owns.

     Portfolio securities on which put options may be written and purchased by a
Series are purchased solely on the basis of investment considerations consistent
with the Series' investment objective. When writing a put option, the Series, in
return for the  premium,  takes the risk that it must  purchase  the  underlying
security  at a price that may be higher  than the  current  market  price of the


                                       32
<PAGE>


security.  If a put option that the Series has written expires unexercised,  the
Series will realize a gain in the amount of the premium.

     Policies and  Limitations.  AMT  Socially  Responsive,  Mid-Cap  Growth and
International Investments generally write and purchase put options on securities
for hedging  purposes  (i.e.,  to reduce,  at least in part, the effect of price
fluctuations   of  securities  held  by  the  Series  on  the  Series'  and  its
corresponding Portfolio's NAVs). However, AMT International Investments also may
use put options for non-hedging  purposes.  The use of put options on securities
by AMT Socially Responsive Investments is not subject to the Social Policy.

     AMT Limited  Maturity  Bond and Balanced  Investments  generally  write and
purchase put options on securities or on foreign currencies for hedging purposes
(i.e.,  to  reduce,  at least in  part,  the  effect  of price  fluctuations  of
securities held by the Series on the Series' and its  corresponding  Portfolio's
NAVs).

     General  Information  About  Securities  Options.  The exercise price of an
option  may be below,  equal to, or above  the  market  value of the  underlying
security at the time the option is written.  Options  normally  have  expiration
dates  between  three  and nine  months  from the date  written.  American-style
options  are  exercisable  at any  time  prior  to their  expiration  date.  AMT
International  Investments also may purchase  European-style  options, which are
exercisable  only  immediately  prior to their  expiration  date. The obligation
under any option written by a Series  terminates  upon  expiration of the option
or, at an earlier  time,  when the Series  offsets the option by entering into a
"closing  purchase  transaction" to purchase an option of the same series. If an
option is purchased by a Series and is never exercised or closed out, the Series
will lose the entire amount of the premium paid.

     Options are traded both on U.S.  national  securities  exchanges and in the
over-the-counter ("OTC") market. AMT International Investments also may purchase
and sell options that are traded on foreign exchanges.  Exchange-traded  options
are issued by a clearing organization  affiliated with the exchange on which the
option is listed; the clearing  organization in effect guarantees  completion of
every exchange-traded  option. In contrast,  OTC options are contracts between a
Series and a counter-party,  with no clearing organization guarantee. Thus, when
a Series sells (or purchases) an OTC option, it generally will be able to "close
out"  the  option  prior  to its  expiration  only by  entering  into a  closing
transaction  with the dealer to whom (or from whom) the Series  originally  sold
(or  purchased)  the option.  There can be no assurance that the Series would be
able to liquidate an OTC option at any time prior to expiration. Unless a Series
is able to effect a closing purchase transaction in a covered OTC call option it
has written, it will not be able to liquidate securities used as cover until the
option expires or is exercised or until different  cover is substituted.  In the
event of the counter-party's insolvency, a Series may be unable to liquidate its
options  position  and  the  associated   cover.  NB  Management   monitors  the
creditworthiness  of  dealers  with  which a Series  may  engage in OTC  options
transactions.

     The premium received (or paid) by a Series when it writes (or purchases) an
option is the amount at which the option is currently  traded on the  applicable
market. The premium may reflect, among other things, the current market price of
the underlying  security,  the  relationship of the exercise


                                       33
<PAGE>


price to the market price,  the  historical  price  volatility of the underlying
security,  the length of the option period, the general supply of and demand for
credit, and the interest rate environment.  The premium received by a Series for
writing an option is recorded as a liability on the Series'  statement of assets
and liabilities. This liability is adjusted daily to the option's current market
value, which is the last reported sales price before the time the Series' NAV is
computed on the day the option is being  valued or, in the absence of any trades
thereof on that day, the mean between the bid and asked prices as of that time.

     Closing transactions are effected in order to realize a profit (or minimize
a loss) on an outstanding  option, to prevent an underlying  security from being
called,  or  to  permit  the  sale  or  the  put  of  the  underlying  security.
Furthermore, effecting a closing transaction permits the Series to write another
call  option on the  underlying  security  with a  different  exercise  price or
expiration date or both. There is, of course, no assurance that a Series will be
able to effect  closing  transactions  at favorable  prices.  If a Series cannot
enter into such a  transaction,  it may be required  to hold a security  that it
might  otherwise  have  sold (or  purchase  a  security  that it would  not have
otherwise  bought),  in which case it would continue to be at market risk on the
security.

     A Series will realize a profit or loss from a closing purchase  transaction
if the cost of the  transaction  is less or more than the premium  received from
writing the call or put option.  Because increases in the market price of a call
option  generally  reflect  increases  in the  market  price  of the  underlying
security,  any loss  resulting from the repurchase of a call option is likely to
be offset, in whole or in part, by appreciation of the underlying security owned
by the Series; however, the Series could be in a less advantageous position than
if it had not written the call option.

     A  Series  pays  brokerage   commissions  or  spreads  in  connection  with
purchasing  or  writing  options,  including  those  used to close out  existing
positions. From time to time, the Series may purchase an underlying security for
delivery in accordance  with an exercise notice of a call option assigned to it,
rather  than  delivering  the  security  from its  portfolio.  In  those  cases,
additional brokerage commissions are incurred.

     The hours of trading for options may not conform to the hours  during which
the  underlying  securities are traded.  To the extent that the options  markets
close before the markets for the underlying  securities,  significant  price and
rate movements can take place in the underlying markets that cannot be reflected
in the options markets.

     Policies and Limitations.  Each Series may use American-style  options. AMT
International  Investments  may also  purchase  European-style  options  and may
purchase and sell options that are traded on foreign exchanges.

     The assets used as cover (or held in a segregated  account) for OTC options
written by a Series will be considered  illiquid unless the OTC options are sold
to qualified  dealers who agree that the Series may repurchase any OTC option it
writes at a maximum  price to be calculated by a formula set forth in the option
agreement.  The cover for an OTC call option  written  subject to this procedure
will


                                       34
<PAGE>


be  considered  illiquid  only to the extent that the maximum  repurchase  price
under the formula exceeds the intrinsic value of the option.

     The use of put and call options by AMT Socially  Responsive  Investments is
not subject to the Social Policy.

     Put and Call Options on Securities Indices. (AMT International and Guardian
Investments). AMT International Investments may purchase put and call options on
securities  indices  for the  purpose  of  hedging  against  the  risk of  price
movements  that would  adversely  affect the value of the Series'  securities or
securities  the Series  intends to buy.  The Series may write  securities  index
options to close out positions in such options that it has purchased.

     For purposes of managing cash flow, AMT Guardian  Investments  may purchase
put and call options on securities  indices to increase the Series'  exposure to
the performance of a recognized securities index, such as the S&P "500" Index.

     Unlike a securities option, which gives the holder the right to purchase or
sell a specified  security at a specified price, an option on a securities index
gives the holder the right to receive a cash "exercise  settlement amount" equal
to (1) the difference  between the exercise price of the option and the value of
the underlying  securities  index on the exercise date (2) multiplied by a fixed
"index  multiplier." A securities  index  fluctuates  with changes in the market
values of the  securities  included in the index.  Options on stock  indices are
currently  traded on the  Chicago  Board  Options  Exchange,  the New York Stock
Exchange  ("NYSE"),  the  American  Stock  Exchange,  and other U.S. and foreign
exchanges.

     The  effectiveness  of hedging  through the  purchase of  securities  index
options will depend upon the extent to which price  movements in the  securities
being hedged  correlate with price movements in the selected  securities  index.
Perfect  correlation  is not  possible  because  the  securities  held  or to be
acquired by the Series will not exactly match the  composition of the securities
indices on which options are available.

     Securities index options have characteristics and risks similar to those of
securities options, as discussed herein.

     Policies and Limitations.  AMT  International  Investments may purchase put
and  call  options  on  securities  indices  for the  purpose  of  hedging.  All
securities index options purchased by the Series will be listed and traded on an
exchange.  The Series currently does not expect to invest a substantial  portion
of its assets in securities index options.

     For purposes of managing cash flow, AMT Guardian  Investments  may purchase
put and call options on securities  indices to increase the Series'  exposure to
the performance of a recognized  securities  index, such as the S&P "500" Index.
All  securities  index  options  purchased by AMT Guardian  Investments  will be
listed and traded on an exchange.


                                       35
<PAGE>


     Foreign  Currency  Transactions.   (All  Series  except  AMT  Liquid  Asset
Investments). Each Series may enter into contracts for the purchase or sale of a
specific  currency at a future date (usually less than one year from the date of
the contract) at a fixed price ("forward contracts"). The Series also may engage
in foreign currency  exchange  transactions on a spot (i.e.,  cash) basis at the
spot rate prevailing in the foreign currency exchange market.

     The Series (other than AMT  International  Investments)  enter into forward
contracts in an attempt to hedge against changes in prevailing currency exchange
rates.  The  Series do not  engage in  transactions  in  forward  contracts  for
speculation;   they  view  investments  in  forward  contracts  as  a  means  of
establishing  more definitely the effective return on, or the purchase price of,
securities  denominated in foreign  currencies.  Forward  contract  transactions
include  forward  sales or  purchases of foreign  currencies  for the purpose of
protecting  the U.S.  dollar  value of  securities  held or to be  acquired by a
Series or protecting the U.S. dollar equivalent of dividends, interest, or other
payments on those securities.

     Forward  contracts  are traded in the  interbank  market  directly  between
dealers (usually large commercial banks) and their customers. A forward contract
generally  has no deposit  requirement,  and no  commissions  are charged at any
stage  for  trades;  foreign  exchange  dealers  realize  a profit  based on the
difference  (the spread) between the prices at which they are buying and selling
various currencies.

     At the  consummation of a forward  contract to sell currency,  a Series may
either make  delivery  of the foreign  currency  or  terminate  its  contractual
obligation  to deliver  by  purchasing  an  offsetting  contract.  If the Series
chooses to make delivery of the foreign  currency,  it may be required to obtain
such  currency  through the sale of  portfolio  securities  denominated  in such
currency or through conversion of other assets of the Series into such currency.
If the Series  engages in an offsetting  transaction,  it will incur a gain or a
loss to the  extent  that there has been a change in  forward  contract  prices.
Closing purchase transactions with respect to forward contracts are usually made
with the currency dealer who is a party to the original forward contract.

     NB Management believes that the use of foreign currency hedging techniques,
including "proxy-hedges," can provide significant protection of NAV in the event
of a general rise in the U.S.  dollar against foreign  currencies.  For example,
the  return  available  from  securities  denominated  in a  particular  foreign
currency would diminish if the value of the U.S. dollar  increased  against that
currency.  Such a decline could be partially or completely offset by an increase
in value of a hedge involving a forward  contract to sell that foreign  currency
or a  proxy-hedge  involving  a forward  contract  to sell a  different  foreign
currency  whose  behavior  is expected  to  resemble  the  currency in which the
securities  being  hedged  are  denominated  but  which  is  available  on  more
advantageous terms.

     However,  a hedge or proxy-hedge cannot protect against exchange rate risks
perfectly, and, if NB Management is incorrect in its judgment of future exchange
rate  relationships,  a Series could be in a less advantageous  position than if
such a hedge had not been established.  If a Series uses  proxy-hedging,  it may
experience losses on both the currency in which it has invested and the currency
used for hedging if the two  currencies do not vary with the expected  degree of
correlation.  Using  forward  contracts  to  protect  the  value  of  a  Series'
securities  against a  decline  in the value of a  currency  does 


                                       36
<PAGE>


not eliminate fluctuations in the prices of the underlying  securities.  Because
forward  contracts are not traded on an exchange,  the assets used to cover such
contracts may be illiquid.  A Series may experience  delays in the settlement of
its foreign currency transactions.

     AMT  International   Investments  may  purchase  securities  of  an  issuer
domiciled in a country other than the country in whose  currency the  instrument
is denominated.  The Series may invest in securities denominated in the European
Currency Unit ("ECU"),  which is a "basket"  consisting of a specified amount of
the  currencies  of certain  of the member  states of the  European  Union.  The
specific amounts of currencies comprising the ECU may be adjusted by the Council
of  Ministers  of the  European  Union from time to time to  reflect  changes in
relative  values of the  underlying  currencies.  The market for ECUs may become
illiquid  at times of  uncertainty  or rapid  change  in the  European  currency
markets,  limiting the Series' ability to prevent potential losses. In addition,
AMT  International  Investments  may invest in securities  denominated  in other
currency baskets.

     Policies  and  Limitations.   The  Series  (other  than  AMT  International
Investments) may enter into forward contracts for the purpose of hedging and not
for  speculation.  The  use of  forward  contracts  by AMT  Socially  Responsive
Investments is not subject to the Social Policy.

     AMT International  Investments may enter into forward contracts for hedging
or  non-hedging   purposes.   When  the  Series  engages  in  foreign   currency
transactions for hedging  purposes,  it will not enter into forward contracts to
sell currency or maintain a net exposure to such contracts if their consummation
would obligate the Series to deliver an amount of foreign currency materially in
excess of the value of its portfolio  securities or other assets  denominated in
that currency. AMT International  Investments may also purchase and sell forward
contracts for non-hedging purposes when NB Management anticipates that a foreign
currency will appreciate or depreciate in value, but securities in that currency
do not  present  attractive  investment  opportunities  and are not  held in the
Series' investment portfolio.

     Options  on  Foreign  Currencies.  (All  Series  except  AMT  Liquid  Asset
Investments). Each Series may write and purchase covered call and put options on
foreign  currencies.  AMT  International  Investments  may write  (sell) put and
covered  call options on any  currency in order to realize  greater  income than
would be realized on portfolio securities alone.

     Currency  options  have  characteristics  and  risks  similar  to  those of
securities options,  as discussed herein.  Certain options on foreign currencies
are traded on the OTC market and involve liquidity and credit risks that may not
be present in the case of exchange-traded currency options.

     Policies and Limitations.  A Series would use options on foreign currencies
to protect against declines in the U.S. dollar value of portfolio  securities or
increases in the U.S. dollar cost of securities to be acquired or to protect the
U.S.  dollar  equivalent  of  dividends,  interest,  or other  payments on those
securities. In addition, AMT International Investments may purchase put and call
options  on foreign  currencies  for  non-hedging  purposes  when NB  Management
anticipates  that a  currency  will  appreciate  or  depreciate  in  value,  but
securities  denominated  in that currency do not present  attractive


                                       37
<PAGE>


investment  opportunities and are not included in the Series. The use of options
on  currencies  by AMT  Socially  Responsive  Investments  is not subject to the
Social Policy.

     Regulatory  Limitations  on Using  Financial  Instruments.  To the extent a
Series sells or purchases futures contracts or writes options thereon or options
on foreign currencies that are traded on an exchange regulated by the CFTC other
than for bona fide  hedging  purposes  (as defined by the CFTC),  the  aggregate
initial  margin and premiums on those  positions  (excluding the amount by which
options are  "in-the-money")  may not exceed 5% of the  Series' net assets.  AMT
Growth and Partners Investments do not intend to invest in futures contracts and
options thereon during the coming year.

     Cover for Financial  Instruments.  Securities held in a segregated  account
cannot be sold while the futures,  options, or forward strategy covered by those
securities is outstanding,  unless they are replaced with other suitable assets.
As a result,  segregation of a large percentage of a Series' assets could impede
portfolio  management  or the Series'  ability to meet  current  obligations.  A
Series  may be  unable  to  promptly  dispose  of  assets  which  cover,  or are
segregated with respect to, an illiquid futures,  options,  or forward position;
this inability may result in a loss to the Series.

     Policies  and  Limitations.  Each Series  will  comply with SEC  guidelines
regarding  "cover" for Financial  Instruments and, if the guidelines so require,
set aside in a segregated  account with its custodian the  prescribed  amount of
cash or appropriate liquid securities.

     General  Risks  of  Financial  Instruments.  The  primary  risks  in  using
Financial  Instruments are (1) imperfect  correlation or no correlation  between
changes in market value of the  securities or currencies  held or to be acquired
by a Series and the prices of  Financial  Instruments;  (2)  possible  lack of a
liquid secondary market for Financial Instruments and the resulting inability to
close out  Financial  Instruments  when  desired;  (3) the fact that the  skills
needed to use Financial  Instruments are different from those needed to select a
Series' securities; (4) the fact that, although use of Financial Instruments for
hedging  purposes  can  reduce  the  risk of loss,  they  also  can  reduce  the
opportunity  for gain, or even result in losses,  by offsetting  favorable price
movements in hedged  investments;  and (5) the possible inability of a Series to
purchase  or  sell a  portfolio  security  at a time  that  would  otherwise  be
favorable for it to do so, or the possible need for a Series to sell a portfolio
security at a  disadvantageous  time,  due to its need to  maintain  cover or to
segregate securities in connection with its use of Financial Instruments.  There
can be no  assurance  that  a  Series'  use of  Financial  Instruments  will  be
successful.

     Each Series' use of Financial  Instruments may be limited by the provisions
of the Internal  Revenue Code of 1986, as amended  ("Code"),  with which it must
comply if its  corresponding  Portfolio is to continue to qualify as a regulated
investment  company  ("RIC").   See  "Additional  Tax  Information."   Financial
Instruments  may not be available  with respect to some  currencies,  especially
those of so-called emerging market countries.

     Policies  and  Limitations.  NB  Management  intends  to reduce the risk of
imperfect  correlation by investing only in Financial Instruments whose behavior
is expected to resemble  or offset that of a Series'  underlying  securities  or
currency.  NB Management intends to reduce the risk that a Series will


                                       38
<PAGE>


be unable to close out Financial  Instruments by entering into such transactions
only if NB  Management  believes  there will be an active  and liquid  secondary
market.

     Indexed Securities.  (AMT Limited Maturity Bond, International and Balanced
Investments).  These  Series may invest in  securities  whose value is linked to
foreign  currencies,  interest rates,  commodities,  indices, or other financial
indicators  ("indexed  securities").  Most  indexed  securities  are  short-  to
intermediate-term  fixed income  securities whose values at maturity or interest
rates rise or fall according to the change in one or more  specified  underlying
instruments.  The value of indexed  securities  may  increase or decrease if the
underlying  instrument  appreciates,  and they may have  return  characteristics
similar to direct  investments  in the  underlying  instrument or to one or more
options  thereon.  However,  some indexed  securities are more volatile than the
underlying instrument itself.

     Inflation-Indexed  Securities.  (AMT  Limited  Maturity  Bond and  Balanced
Investments).  The Series may invest in U.S. Treasury securities whose principal
value is adjusted daily in accordance  with changes to the Consumer Price Index.
Such securities are backed by the full faith and credit of the U.S.  Government.
Interest is calculated on the basis of the current adjusted principal value. The
principal  value  of   inflation-indexed   securities  declines  in  periods  of
deflation,  but holders at maturity  receive no less than par. If  inflation  is
lower than expected  during the period a Series holds the  security,  the Series
may earn less on it than on a conventional bond.

     Because  the  coupon  rate on  inflation-indexed  securities  is lower than
fixed-rate U.S. Treasury securities, the Consumer Price Index would have to rise
at least to the amount of the  difference  between  the coupon rate of the fixed
rate  U.S.  Treasury  issues  and  the  coupon  rate  of  the  inflation-indexed
securities,  assuming all other factors are equal,  in order for such securities
to   match   the   performance   of   the   fixed-rate   Treasury    securities.
Inflation-indexed  securities are expected to react  primarily to changes in the
"real"  interest  rate (i.e.,  the  nominal  (or  stated)  rate less the rate of
inflation), while a typical bond reacts to changes in the nominal interest rate.
Accordingly,  inflation-indexed  securities have  characteristics  of fixed-rate
Treasuries  having a shorter  duration.  Changes in market  interest  rates from
causes  other  than   inflation   will  likely   affect  the  market  prices  of
inflation-indexed securities in the same manner as conventional bonds.

     Short Sales.  (AMT  International  Investments).  The Series may attempt to
limit exposure to a possible decline in the market value of portfolio securities
through short sales of securities that NB Management believes possess volatility
characteristics  similar to those  being  hedged.  The Series also may use short
sales in an attempt to realize gain. To effect a short sale,  the Series borrows
a security from a brokerage firm to make delivery to the buyer.  The Series then
is obliged to replace the borrowed security by purchasing it at the market price
at the time of  replacement.  Until the  security  is  replaced,  the  Series is
required to pay the lender any dividends and may be required to pay a premium or
interest.

     The Series will  realize a gain if the security  declines in price  between
the  date of the  short  sale  and the date on which  the  Series  replaces  the
borrowed  security.  The Series  will incur a loss if the price of the  security
increases between those dates. The amount of any gain will be decreased, and the


                                       39
<PAGE>


amount of any loss  increased,  by the  amount of any  premium or  interest  the
Series is required to pay in  connection  with the short sale. A short  position
may be adversely  affected by  imperfect  correlation  between  movements in the
price of the securities sold short and the securities being hedged.

     The Series  also may make short  sales  against-the-box,  in which it sells
securities  short only if it owns or has the right to obtain without  payment of
additional consideration an equal amount of the same type of securities sold.

     The  effect of short  selling  on the  Series is  similar  to the effect of
leverage. Short selling may amplify changes in the Series' and its corresponding
Portfolio's  NAVs.  Short selling may also produce higher than normal  portfolio
turnover, which may result in increased transaction costs to the Series.

     Policies and Limitations.  Under applicable guidelines of the SEC staff, if
the Series engages in a short sale (other than a short sale against-the-box), it
must put in a  segregated  account  (not with the  broker)  an amount of cash or
appropriate  liquid  securities  equal to the difference  between (1) the market
value of the securities  sold short at the time they were sold short and (2) any
cash or  securities  required to be deposited as  collateral  with the broker in
connection with the short sale (not including the proceeds from the short sale).
In addition,  until the Series  replaces the  borrowed  security,  it must daily
maintain the segregated account at such a level that (1) the amount deposited in
it plus the amount  deposited  with the broker as collateral  equals the current
market value of the securities  sold short,  and (2) the amount  deposited in it
plus the amount  deposited  with the broker as  collateral  is not less than the
market value of the securities at the time they were sold short.

     Asset-Backed  Securities.  (AMT Liquid  Asset,  Limited  Maturity  Bond and
Balanced  Investments).  Asset-backed  securities  represent  direct or indirect
participations  in, or are secured by and payable from,  pools of assets such as
motor vehicle installment sales contracts, installment loan contracts, leases of
various types of real and personal  property,  and  receivables  from  revolving
credit (credit card) agreements. These assets are securitized through the use of
trusts and special purpose  corporations.  Credit enhancements,  such as various
forms of cash collateral  accounts or letters of credit, may support payments of
principal and interest on asset-backed securities. Although these securities may
be  supported  by letters  of credit or other  credit  enhancements,  payment of
interest and principal ultimately depends upon individuals paying the underlying
loans,  which may be affected  adversely  by general  downturns  in the economy.
Asset-backed  securities  are subject to the same risk of  prepayment  described
with  respect  to  mortgage-backed   securities.   The  risk  that  recovery  on
repossessed  collateral might be unavailable or inadequate to support  payments,
however,  is  greater  for  asset-backed  securities  than  for  mortgage-backed
securities.

     Certificates for Automobile  Receivablessm  ("CARSsm")  represent undivided
fractional  interests in a trust whose assets consist of a pool of motor vehicle
retail  installment  sales  contracts  and  security  interests  in the vehicles
securing  those  contracts.  Payment of principal and interest on the underlying
contracts are passed through  monthly to certificate  holders and are guaranteed
up to specified amounts by a letter of credit issued by a financial  institution
unaffiliated with the trustee or originator of the trust. Underlying installment
sales  contracts are subject to prepayment,  which may reduce the overall return
to


                                       40
<PAGE>


certificate  holders.  Certificate holders also may experience delays in payment
or  losses  on CARSsm if the trust  does not  realize  the full  amounts  due on
underlying  installment  sales  contracts  because  of  unanticipated  legal  or
administrative costs of enforcing the contracts;  depreciation,  damage, or loss
of the vehicles securing the contracts; or other factors.

     Credit card receivable  securities are backed by receivables from revolving
credit card agreements  ("Accounts").  Credit balances on Accounts are generally
paid down more rapidly than are  automobile  contracts.  Most of the credit card
receivable   securities   issued   publicly  to  date  have  been   pass-through
certificates.  In order to  lengthen  their  maturity  or  duration,  most  such
securities provide for a fixed period during which only interest payments on the
underlying  Accounts  are  passed  through  to the  security  holder;  principal
payments  received on the Accounts  are used to fund the transfer of  additional
credit card charges made on the  Accounts to the pool of assets  supporting  the
securities.  Usually,  the initial  fixed  period may be  shortened if specified
events occur which signal a potential deterioration in the quality of the assets
backing the  security,  such as the  imposition of a cap on interest  rates.  An
issuer's  ability  to  extend  the life of an issue of  credit  card  receivable
securities thus depends on the continued  generation of principal amounts in the
underlying  Accounts  and  the  non-occurrence  of  the  specified  events.  The
non-deductibility  of  consumer  interest,  as well as  competitive  and general
economic  factors,  could adversely affect the rate at which new receivables are
created in an Account and conveyed to an issuer, thereby shortening the expected
weighted  average  life of the  related  security  and  reducing  its yield.  An
acceleration in cardholders'  payment rates or any other event that shortens the
period  during  which  additional  credit  card  charges  on an  Account  may be
transferred to the pool of assets  supporting the related  security could have a
similar effect on its weighted average life and yield.

     Credit  cardholders  are  entitled to the  protection  of state and federal
consumer  credit  laws.  Many of those  laws give a holder  the right to set off
certain  amounts  against  balances  owed on the credit card,  thereby  reducing
amounts paid on  Accounts.  In addition,  unlike the  collateral  for most other
asset-backed securities, Accounts are unsecured obligations of the cardholder.

     AMT Limited Maturity Bond and Balanced Investments each may invest in trust
preferred securities, which are a type of asset-backed security. Trust preferred
securities  represent interests in a trust formed by a parent company to finance
its  operations.  The trust sells  preferred  shares and invests the proceeds in
debt  securities of the parent.  This debt may be  subordinated  and  unsecured.
Dividend payments on the trust preferred  securities match the interest payments
on the debt securities; if no interest is paid on the debt securities, the trust
will not make  current  payments on its  preferred  securities.  Unlike  typical
asset-backed  securities,  which have many  underlying  payors  and are  usually
overcollateralized,  trust preferred  securities have only one underlying  payor
and are not overcollateralized.  Issuers of trust preferred securities and their
parents currently enjoy favorable tax treatment.  If the tax characterization of
trust  preferred  securities  were to  change,  they  could be  redeemed  by the
issuers, which could result in a loss to a Series.

     Convertible  Securities.   (Equity  Series).  Each  Series  may  invest  in
convertible  securities.  A  convertible  security is a bond,  debenture,  note,
preferred stock, or other security that may be converted into or exchanged for a
prescribed  amount of common  stock of the same or a different  issuer  within a


                                       41
<PAGE>


particular  period  of  time  at  a  specified  price  or  formula.  Convertible
securities generally have features of both common stocks and debt securities.  A
convertible  security entitles the holder to receive interest paid or accrued on
debt or the dividend  paid on  preferred  stock until the  convertible  security
matures or is redeemed,  converted or exchanged. Before conversion,  convertible
securities  ordinarily  provide a stream of income with generally  higher yields
than those of common stocks of the same or similar  issuers,  but lower than the
yield on non-convertible debt.  Convertible  securities are usually subordinated
to comparable-tier  nonconvertible securities but rank senior to common stock in
a  corporation's  capital  structure.  The value of a convertible  security is a
function of (1) its yield in comparison  with the yields of other  securities of
comparable maturity and quality that do not have a conversion privilege, and (2)
its worth, at market value, if converted into the underlying common stock.

     The price of a convertible  security often reflects such  variations in the
price of the underlying common stock in a way that nonconvertible debt does not.
Convertible  securities are typically  issued by smaller  capitalized  companies
whose stock prices may be volatile. A convertible security is a bond, debenture,
note, preferred stock, or other security that may be converted into or exchanged
for a prescribed amount of common stock of the same or a different issuer within
a  particular  period  of time at a  specified  price  or  formula.  Convertible
securities generally have features of both common stocks and debt securities.  A
convertible security may be subject to redemption at the option of the issuer at
a price  established in the security's  governing  instrument.  If a convertible
security held by a Series is called for redemption,  the Series will be required
to convert it into the  underlying  common  stock,  sell it to a third  party or
permit the issuer to redeem the  security.  Any of these  actions  could have an
adverse effect on a Series' and its corresponding Portfolio's ability to achieve
its investment objective.

     Policies and Limitations. AMT Socially Responsive Investments may invest up
to 20% of its net assets in convertible  securities.  The Series does not intend
to  purchase  any  convertible   securities  that  are  not  investment   grade.
Convertible debt securities are subject to each Series' investment  policies and
limitations concerning debt securities.

     Preferred Stock. (Equity Series). The Series may invest in preferred stock.
Unlike interest  payments on debt  securities,  dividends on preferred stock are
generally payable at the discretion of the issuer's board of directors, although
preferred  shareholders  may have  certain  rights  if  dividends  are not paid.
Shareholders may suffer a loss of value if dividends are not paid, and generally
have no legal recourse against the issuer. The market prices of preferred stocks
are generally  more sensitive to changes in the issuer's  creditworthiness  than
are the prices of debt securities.



                                       42
<PAGE>


     Zero Coupon (AMT Partners, International, Guardian, Growth, Mid-Cap Growth,
Socially  Responsive,   Limited  Maturity  Bond,  Balanced,   and  Liquid  Asset
Investments) and Step Coupon Securities. (AMT Limited Maturity Bond and Balanced
Investments).  The Series may invest in zero coupon  securities  and AMT Limited
Maturity  Bond and Balanced  Investments  may invest in step coupon  securities,
both of  which  are debt  obligations  that do not  entitle  the  holder  to any
periodic  payment of interest  prior to  maturity or that  specify a future date
when the securities begin paying current interest.  Rather,  they are issued and
traded at a  significant  discount  from  their face  amount or par  value.  The
discount varies depending on prevailing interest rates, the time remaining until
cash payments  begin,  the liquidity of the security,  and the perceived  credit
quality of the issuer. They are redeemed at face value when they mature.

     The  discount on zero coupon and step coupon  securities  ("original  issue
discount" or "OID") must be taken into income  ratably by each such Series prior
to the receipt of any actual payments. Because each Portfolio must distribute to
its shareholders substantially all of its net income (including its share of its
corresponding  Series' accrued OID) to its shareholders each year for income tax
purposes,   a  Series  may  have  to  dispose  of  portfolio   securities  under
disadvantageous circumstances to generate cash, or may be required to borrow, to
satisfy its corresponding Portfolio's distribution requirements.

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

     Municipal   Obligations.   (Income  Series).   Municipal   obligations  are
securities  issued  by or on behalf of states  (as used  herein,  including  the
District of  Columbia),  territories  and  possessions  of the United States and
their political subdivisions,  agencies, and instrumentalities.  The interest on
municipal   obligations  is  generally  exempt  from  federal  income  tax.  The
tax-exempt  status of any issue of municipal  obligations  is  determined on the
basis of an opinion of the issuer's bond counsel at the time the obligations are
issued.

     Municipal  obligations include "general obligation"  securities,  which are
backed by the full taxing power of a  municipality,  and  "revenue"  securities,
which are backed only by the income from a specific project,  facility,  or tax.
Municipal  obligations also include industrial  development and private activity
bonds which are issued by or on behalf of public authorities, but are not backed
by the credit of any  governmental or public  authority.  "Anticipation  notes",
which  are  also  municipal   obligations,   are  issued  by  municipalities  in
expectation  of future  proceeds  from the  issuance of bonds,  or from taxes or
other  revenues,  and are payable from those bond proceeds,  taxes, or revenues.
Municipal  obligations also include tax-exempt commercial paper, which is issued
by municipalities to help finance short-term capital or operating requirements.

     The value of municipal  obligations is dependent on the continuing  payment
of interest and principal  when due by the issuers of the municipal  obligations
in which a Series invests (or, in the case of industrial  development bonds, the
revenues  generated by the facility  financed by the bonds or, in certain  other
instances, the provider of the credit facility backing the bonds). As with other
fixed income


                                       43
<PAGE>


securities,  an increase in interest rates  generally will reduce the value of a
Series'  investments  in  municipal  obligations,  whereas a decline in interest
rates generally will increase that value.

     Current  efforts to  restructure  the federal  budget and the  relationship
between the federal  government  and state and local  governments  may adversely
impact the  financing of some issuers of municipal  securities.  Some states and
localities are experiencing  substantial  deficits and may find it difficult for
political or economic reasons to increase taxes.  Efforts are under way that may
result in a restructuring of the federal income tax system.  These  developments
could  reduce  the  value of all  municipal  securities,  or the  securities  of
particular issuers.

     Policies and Limitations. AMT Limited Maturity Bond Portfolio may invest up
to 5% of its net assets in municipal  obligations.  AMT Liquid Asset Investments
may invest in municipal obligations that otherwise meet its criteria for quality
and maturity.

     U.S.  Government  and Agency  Securities.  (All  Series).  U.S.  Government
Securities  are  obligations of the U.S.  Treasury  backed by the full faith and
credit of the United States.  U.S.  Government  Agency  Securities are issued or
guaranteed by U.S.  Government  agencies,  or by  instrumentalities  of the U.S.
Government,  such as the  Government  National  Mortgage  Association  ("GNMA"),
Fannie Mae (also known as the Federal National  Mortgage  Association),  Freddie
Mac (also known as the Federal  Home Loan  Mortgage  Corporation),  Student Loan
Marketing  Association  (commonly known as "Sallie Mae"),  and Tennessee  Valley
Authority.  Some U.S.  Government  Agency  Securities  are supported by the full
faith and credit of the United  States,  while  others may be  supported  by the
issuer's  ability to borrow from the U.S.  Treasury,  subject to the  Treasury's
discretion  in  certain  cases,  or  only  by the  credit  of the  issuer.  U.S.
Government Agency  Securities  include U.S.  Government  Agency  mortgage-backed
securities. (See "Mortgage-Backed Securities," below.) The market prices of U.S.
Government  Agency Securities are not guaranteed by the Government and generally
fluctuate inversely with changing interest rates.

     Policies and  Limitations.  AMT Liquid Asset  Investments may invest 25% or
more of its total assets in U.S.  Government and Agency  Securities.  The Equity
Series  normally may invest up to 35% of their total assets in debt  securities,
including U.S. Government and Agency securities.

     Swap Agreements. (AMT International Investments). The Series may enter into
swap  agreements to manage or gain exposure to particular  types of  investments
(including equity securities or indices of equity securities in which the Series
otherwise could not invest efficiently).  In an example of a swap agreement, one
party agrees to make regular  payments  equal to a floating  rate on a specified
amount in exchange for payments  equal to a fixed rate, or a different  floating
rate, on the same amount for a specified period.

     Swap agreements may involve leverage and may be highly volatile;  depending
on how  they  are  used,  they may have a  considerable  impact  on the  Series'
performance.  The  risks  of swap  agreements  depend  upon  the  other  party's
creditworthiness  and  ability to  perform,  as well as the


                                       44
<PAGE>


Series' ability to terminate its swap agreements or reduce its exposure  through
offsetting  transactions.  Swap  agreements may be illiquid.  The swap market is
relatively new and is largely unregulated.

     Policies and Limitations.  In accordance with SEC staff  requirements,  the
Series will segregate cash or appropriate  liquid  securities in an amount equal
to its obligations under swap agreements; when an agreement provides for netting
of the payments by the two parties, the Series will segregate only the amount of
its net obligation, if any.

     Fixed Income Securities.  (All Series).  The Income Series invest primarily
in fixed income securities.  While the emphasis of the Equity Series' investment
programs is on common  stocks and other equity  securities,  the Series may also
invest in money market instruments,  U.S. Government and Agency Securities,  and
other  fixed  income  securities.  Each  Series may invest in  investment  grade
corporate bonds and debentures.  AMT Partners,  Mid-Cap Growth, Limited Maturity
Bond,  Balanced and International  Investments each may invest in corporate debt
securities rated below investment grade.

     "Investment  grade" debt  securities  are those  receiving  one of the four
highest ratings from Moody's Investors  Service,  Inc.  ("Moody's"),  Standard &
Poor's ("S&P"), or another nationally recognized statistical rating organization
("NRSRO") or, if unrated by any NRSRO,  deemed by NB Management to be comparable
to such rated securities ("Comparable Unrated Securities").  Securities rated by
Moody's  in its fourth  highest  rating  category  (Baa) or  Comparable  Unrated
Securities may be deemed to have speculative characteristics.

     The  ratings  of an  NRSRO  represent  its  opinion  as to the  quality  of
securities it undertakes to rate. Ratings are not absolute standards of quality;
consequently,  securities  with the same maturity,  coupon,  and rating may have
different yields.  Although the Portfolios may rely on the ratings of any NRSRO,
the Portfolios primarily refer to ratings assigned by S&P and Moody's, which are
described in Appendix A to this SAI.

     Fixed income securities are subject to the risk of an issuer's inability to
meet principal and interest payments on its obligations  ("credit risk") and are
subject to price  volatility  due to such factors as interest rate  sensitivity,
market perception of the  creditworthiness  of the issuer,  and market liquidity
("market risk").  The value of the fixed income securities in which a Series may
invest  is  likely  to  decline  in  times  of  rising  market  interest  rates.
Conversely,  when rates fall, the value of a Series' fixed income investments is
likely to rise. Foreign debt securities are subject to risks similar to those of
other foreign  securities.  Lower rated  securities  are more likely to react to
developments  affecting  market  and  credit  risk  than are more  highly  rated
securities,  which react primarily to movements in the general level of interest
rates.

     Lower Rated Debt Securities.  (AMT Balanced, Limited Maturity Bond, Mid-Cap
Growth, Partners and International Investments).  Lower-rated debt securities or
"junk  bonds" are those  rated below the fourth  highest  category by all NRSROs
that have rated them (including  those  securities  rated as low as D by S&P) or
unrated  securities of comparable  quality.


                                       45
<PAGE>


Securities  rated below investment  grade may be considered  speculative.  These
securities  are  deemed to be  predominantly  speculative  with  respect  to the
issuer's  capacity  to pay  interest  and  repay  principal.  Lower  rated  debt
securities  generally  offer a higher  current  yield  than that  available  for
investment  grade  issues  with  similar   maturities,   but  they  may  involve
significant  risk under adverse  conditions.  In particular,  adverse changes in
general  economic  conditions  and in the  industries  in which the  issuers are
engaged and changes in the financial condition of the issuers are more likely to
cause price  volatility  and weaken the capacity of the issuer to make principal
and interest  payments than is the case for  higher-grade  debt  securities.  In
addition, a Series that invests in lower-quality securities may incur additional
expenses to the extent  recovery is sought on defaulted  securities.  Because of
the many risks  involved in investing in high-yield  securities,  the success of
such investments is dependent on the credit analysis of NB Management.

     During  periods of  economic  downturn  or rising  interest  rates,  highly
leveraged  issuers may experience  financial stress which could adversely affect
their  ability to make  payments of interest  and  principal  and  increase  the
possibility of default. In addition,  such issuers may not have more traditional
methods  of  financing  available  to them and may be  unable  to repay  debt at
maturity  by  refinancing.  The risk of loss due to default  by such  issuers is
significantly  greater  because such  securities  frequently  are  unsecured and
subordinated to the prior payment of senior indebtedness.

     The market for lower rated debt  securities has expanded  rapidly in recent
years, and its growth  generally  paralleled a long economic  expansion.  In the
past,  the prices of many lower rated debt  securities  declined  substantially,
reflecting an expectation  that many issuers of such securities might experience
financial  difficulties.  As a result, the yields on lower rated debt securities
rose dramatically.  However, such higher yields did not reflect the value of the
income stream that holders of such securities expected, but rather the risk that
holders of such securities could lose a substantial  portion of their value as a
result of the issuers'  financial  restructuring  or  defaults.  There can be no
assurance that such declines will not recur.

     The market for lower rated debt issues  generally is thinner or less active
than that for higher quality  securities,  which may limit a Series'  ability to
sell such  securities  at fair value in  response  to changes in the  economy or
financial  markets.  Judgment may play a greater role in pricing such securities
than  it does  for  more  liquid  securities.  Adverse  publicity  and  investor
perceptions, whether or not based on fundamental analysis, may also decrease the
values and  liquidity  of lower rated debt  securities,  especially  in a thinly
traded market.

     See Appendix A for further information about the ratings of debt securities
assigned by S&P and Moody's.

     Policies and Limitations.  AMT Partners Investments may invest up to 15% of
its net assets, measured at the time of investment, in corporate debt securities
rated below  investment  grade or  Comparable  Unrated  Securities.  AMT Limited
Maturity Bond and Mid-Cap Growth  Investments  may invest up to 10% of their net
assets,  measured  at the time of  investment,  in debt  securities  rated below
investment grade, but rated at least B with respect to AMT Limited Maturity Bond
Investments  and C with  respect to AMT  Mid-Cap  Growth  Investments  by S&P


                                       46
<PAGE>

or Moody's,  or Comparable  Unrated  Securities;  AMT Balanced  Investments  may
invest up to 10% of the debt securities portion of its investments,  measured at
the time of investment,  in debt securities  rated below  investment  grade, but
rated at least B by S&P or Moody's, or Comparable Unrated Securities.

     AMT  International  Investments  may invest in domestic  and  foreign  debt
securities  of any rating,  including  those rated  below  investment  grade and
Comparable Unrated Securities.

     Subsequent  to its purchase by a Series,  an issue of debt  securities  may
cease to be rated or its rating may be reduced,  so that the securities would no
longer be eligible  for purchase by that  Series.  In such a case,  AMT Socially
Responsive  Investments will engage in an orderly  disposition of the downgraded
securities, and AMT Limited Maturity Bond and Balanced (debt securities portion)
Investments will engage in an orderly  disposition of the downgraded  securities
or other  securities to the extent necessary to ensure the Series' holdings that
are considered by the Series to be below investment grade will not exceed 10% of
its net assets. AMT Limited Maturity Bond and Balanced (debt securities portion)
Investments  may  hold  up to 5% of  its  net  assets  in  securities  that  are
downgraded  after  purchase to a rating  below that  permissible  by the Series'
investment  policies.  Each other Series (except AMT International  Investments)
will engage in an orderly  disposition  of  downgraded  securities to the extent
necessary  to  ensure  that the  Series'  holdings  of  securities  rated  below
investment grade and Comparable Unrated Securities will not exceed 5% of its net
assets (15% in the case of AMT Partners  Investments  and 10% in the case of AMT
Mid-Cap  Growth  Investments).  NB Management  will make a  determination  as to
whether  AMT  International   Investments   should  dispose  of  the  downgraded
securities.

     NB Management will invest in lower-rated  securities only when it concludes
that the  anticipated  return on such an  investment  to AMT  Partners,  Mid-Cap
Growth or International Investments warrants exposure to the additional level of
risk.

Ratings of Fixed Income Securities

     As discussed above, the Series may purchase  securities rated by Standard &
Poor's  ("S&P"),  Moody's  Investors  Service,  Inc.  ("Moody's"),  or any other
nationally recognized statistical rating organization ("NRSRO").  The ratings of
an NRSRO  represent its opinion as to the quality of securities it undertakes to
rate.  Ratings are not absolute standards of quality;  consequently,  securities
with the same maturity,  duration, coupon, and rating may have different yields.
Although  the Series may rely on the  ratings  of any NRSRO,  the Series  mainly
refer to ratings assigned by S&P and Moody's, which are described in Appendix A.
Each Series may also invest in unrated  securities that are deemed comparable in
quality  by NB  Management  to the  rated  securities  in which the  Series  may
permissibly invest.

     High-quality  debt securities.  High-quality debt securities are securities
that have received a rating from at least one NRSRO, such as S&P or Moody's,  in
one of the two highest rating  categories  (the highest  category in the case of
commercial  paper) or, if not rated by any NRSRO,  such as U.S.  Government  and
Agency Securities, have been determined by NB Management to be


                                       47
<PAGE>


of comparable quality. If two or more NRSROs have rated a security, at least two
of them must rate it as high  quality  if the  security  is to be  eligible  for
purchase by AMT Liquid Asset Investments.

     Investment  Grade Debt  Securities.  Investment  grade debt  securities are
securities  that have  received  a rating  from at least one NRSRO in one of the
four  highest  rating  categories  or,  if not  rated by any  NRSRO,  have  been
determined  by  NB  Management  to  be  of  comparable  quality.  Moody's  deems
securities  rated in its  fourth  highest  category  (Baa)  to have  speculative
characteristics;  a change in economic factors could lead to a weakened capacity
of the issuer to repay.

     Lower-Rated  Debt  Securities.  Lower-rated debt securities or "junk bonds"
are those rated below the fourth highest  category by all NRSROs that have rated
them (including those securities rated as low as D by S&P) or unrated securities
of comparable quality. Securities rated below investment grade may be considered
speculative.  Securities rated B are judged to be predominantly speculative with
respect to their capacity to pay interest and repay principal in accordance with
the terms of the obligations.  Although these securities  generally offer higher
yields  than  investment   grade  debt   securities  with  similar   maturities,
lower-quality  securities  involve  greater risks,  including the possibility of
default  or  bankruptcy  by the  issuer,  or the  securities  may  already be in
default. See the additional risks described above for lower-rated securities.

     Subsequent  to its purchase by a Series,  an issue of debt  securities  may
cease to be rated or its rating may be reduced,  so that the securities would no
longer be  eligible  for  purchase  by that  Series.  The  policy on  downgraded
securities  with respect to all Series  except AMT Liquid Asset  Investments  is
discussed  above under  "Lower Rated Debt  Securities."  With respect to the AMT
Liquid Asset  Investments,  NB  Management  will consider the need to dispose of
such securities in accordance with the  requirements of Rule 2a-7 under the 1940
Act.

Duration and Maturity

     Duration is a measure of the  sensitivity of debt  securities to changes in
market  interest  rates,  based on the  entire  cash  flow  associated  with the
securities,   including   payments  occurring  before  the  final  repayment  of
principal.  For AMT Limited Maturity Bond and Balanced (debt securities portion)
Investments,  NB Management  utilizes duration as a tool in portfolio  selection
instead of the more  traditional  measure known as "term to maturity."  "Term to
maturity"  measures  only the time  until a debt  security  provides  its  final
payment,  taking no account of the pattern of the  security's  payments prior to
maturity.  Duration incorporates a bond's yield, coupon interest payments, final
maturity and call features into one measure.  Duration therefore provides a more
accurate  measurement  of a bond's  likely  price  change in response to a given
change in market interest rates. The longer the duration, the greater the bond's
price movement will be as interest rates change.  For any fixed income  security
with interest payments occurring prior to the payment of principal,  duration is
always less than maturity.


                                       48
<PAGE>


     Futures,  options and options on futures have durations which are generally
related to the duration of the securities  underlying them. Holding long futures
or call option positions will lengthen a Series'  duration by approximately  the
same amount as would holding an equivalent amount of the underlying  securities.
Short futures or put options have durations roughly equal to the negative of the
duration of the securities that underlie these positions, and have the effect of
reducing portfolio duration by approximately the same amount as would selling an
equivalent amount of the underlying securities.

     There are some situations where even the standard duration calculation does
not properly  reflect the  interest  rate  exposure of a security.  For example,
floating and variable rate securities often have final maturities of ten or more
years; however, their interest rate exposure corresponds to the frequency of the
coupon reset.  Another  example where the interest rate exposure is not properly
captured by duration is the case of mortgage-backed securities. The stated final
maturity of such  securities  is  generally  30 years,  but current and expected
prepayment  rates are critical in  determining  the  securities'  interest  rate
exposure. In these and other similar situations, NB Management, where permitted,
will use more sophisticated  analytical techniques that incorporate the economic
life of a security into the determination of its interest rate exposure.

     AMT Liquid  Asset  Investments  is required  to maintain a  dollar-weighted
average portfolio  maturity of no more than 90 days and invest in a portfolio of
debt  instruments  with  remaining  maturities of 397 days or less.  AMT Limited
Maturity   Bond   and   Balanced   (debt   securities   portion)    Investments'
dollar-weighted average duration will not exceed four years, although the Series
may invest in individual securities of any duration; the Series' dollar-weighted
average maturity may range up to five years.

Risks of Equity Securities

     The Equity  Series may invest in  securities  that include  common  stocks,
preferred  stocks,  convertible  securities  and  warrants.  Common  stocks  and
preferred  stocks  represent  shares of  ownership in a  corporation.  Preferred
stocks  usually have  specific  dividends and rank after bonds and before common
stock in claims on assets of the corporation  should it be dissolved.  Increases
and decreases in earnings are usually reflected in a corporation's  stock price.
Convertible  securities are debt or preferred equity securities convertible into
common stock. Usually, convertible securities pay dividends or interest at rates
higher  than  common  stock,  but  lower  than  other  securities.   Convertible
securities   usually   participate  to  some  extent  in  the   appreciation  or
depreciation of the underlying stock into which they are  convertible.  Warrants
are  options  to buy a stated  number of shares of common  stock at a  specified
price anytime during the life of the warrants.

     To the extent the Series invest in such securities, the value of securities
held by the Series will be affected by changes in the stock  markets,  which may
be the result of domestic or international  political or economic news,  changes
in interest rates or changing  investor  sentiment.  At times, the stock markets
can be volatile and stock prices can change substantially. The equity securities
of smaller  companies  are more  sensitive to these changes than those of larger


                                       49
<PAGE>


companies.  This  market  risk will  affect the  Series'  and the  corresponding
Portfolio's NAVs per share,  which will fluctuate as the value of the securities
held by the Series change.  Not all stock prices change uniformly or at the same
time and not all stock  markets  move in the same  direction  at the same  time.
Other factors affect a particular stock's prices,  such as poor earnings reports
by an issuer,  loss of major customers,  major litigation  against an issuer, or
changes  in  governmental  regulations  affecting  an  industry.   Adverse  news
affecting one company can sometimes depress the stock prices of all companies in
the same industry. Not all factors can be predicted.

     Other Investment Companies.  (AMT International and Guardian  Investments).
AMT  International  Investments  may  invest in the  shares of other  investment
companies. Such investment may be the most practical or only manner in which the
Series  can  participate  in certain  foreign  markets  because of the  expenses
involved or because other  vehicles for investing in those  countries may not be
available  at the time the Series is ready to make an  investment.  AMT Guardian
Investments  at  times  may  invest  in  instruments  structured  as  investment
companies to gain exposure to the performance of a recognized  securities index,
such as the S&P "500" Index.

     As a shareholder in an investment company, a Series would bear its pro rata
share of that  investment  company's  expenses.  Investment  in other  funds may
involve the payment of  substantial  premiums  above the value of such  issuer's
portfolio  securities.  The Series do not intend to invest in such funds unless,
in the judgment of NB  Management,  the  potential  benefits of such  investment
justify the payment of any applicable premium or sales charge.

     Policies and  Limitations.  Each Series'  investment in such  securities is
limited to (i) 3% of the total voting stock of any one investment company,  (ii)
5% of the Series'  total assets with respect to any one  investment  company and
(iii) 10% of the Series' total assets in the aggregate.

AMT Socially Responsive Investments - Description of Social Policy

     Background Information on Socially Responsive Investing

     In an era when many people are  concerned  about the  relationship  between
business and society,  socially responsive  investing ("SRI") is a mechanism for
assuring  that  investors'  social  values  are  reflected  in their  investment
decisions. As such, SRI is a direct descendent of the successful effort begun in
the early 1970's to encourage companies to divest their South African operations
and subscribe to the Sullivan Principles. Today, a growing number of individuals
and institutions are applying similar strategies to a broad range of problems.

     Although  there are many  strategies  available to the socially  responsive
investor,  including proxy activism,  below-market loans to community  projects,
and venture  capital,  the SRI strategies used by the Series generally fall into
two categories:

     Avoidance  Investing.  Most  socially  responsive  investors  seek to avoid
holding  securities of companies whose products or policies are seen as being at
odds with the social good. The most common exclusions historically have involved
tobacco companies and weapons manufacturers.



                                       50
<PAGE>


     Leadership  Investing.  A growing  number of  investors  actively  look for
companies with  progressive  programs that are exemplary or companies which make
it their business to try to solve some of the problems of today's society.

     The marriage of social and financial  objectives  would not have  surprised
Adam Smith,  who was,  first and foremost,  a moral  philosopher.  The Wealth of
Nations is firmly  rooted in the  Enlightenment  conviction  that the purpose of
capital is the social  good and the  related  belief  that idle  capital is both
wasteful and unethical.  But, what very likely would have surprised Smith is the
sheer  complexity  of the social  issues we face today and the  diversity of our
attitudes  toward  the  social  good.  War  and  peace,  race  and  gender,  the
distribution of wealth,  and the conservation of natural resources -- the social
agenda is long and  compelling.  It is also  something  about  which  reasonable
people differ. What should society's  priorities be? What can and should be done
about  them?  And  what is the  role  of  business  in  addressing  them?  Since
corporations  are on the front lines of so many key issues in today's  world,  a
growing  number of investors feel that a  corporation's  role cannot be ignored.
This is true of some of the  most  important  issues  of the day  such as  equal
opportunity and the environment.

     The Socially Responsive Database

     Neuberger Berman, LLC ("Neuberger  Berman"),  the Portfolio's  sub-adviser,
maintains a database of information  about the social impact of the companies it
follows.  NB  Management  uses the database to evaluate  social  issues after it
deems a stock  acceptable  from a financial  standpoint  for  acquisition by the
Portfolio.  The aim of the database is to be as comprehensive as possible, given
that much of the  information  concerning  corporate  responsibility  comes from
subjective sources. Information for the database is gathered by Neuberger Berman
in many  categories  and then  analyzed by NB  Management  in the  following six
categories of corporate responsibility:

     Workplace Diversity and Employment.  NB Management looks for companies that
show  leadership in areas such as employee  training and promotion  policies and
benefits,  such as flextime,  generous  profit  sharing,  and parental leave. NB
Management  looks for active  programs to promote women and minorities and takes
into account their representation among the officers of an issuer and members of
its board of directors.  As a basis for exclusion, NB Management looks for Equal
Employment  Opportunity Act infractions and  Occupational  Safety and Health Act
violations; examines each case in terms of severity, frequency, and time elapsed
since  the  incident;  and  considers  actions  taken by the  company  since the
violation.  NB Management also monitors companies' progress and attitudes toward
these issues.

     Environment.  A company's impact on the environment  depends largely on the
industry.  Therefore,  NB Management examines a company's  environmental  record
vis-a-vis  those of its peers in the  industry.  All  companies  operating in an
industry  with  inherently  high  environmental  risks  are  likely  to have had
problems in such areas as toxic chemical emissions, federal and state fines, and
Superfund sites. For these companies,  NB Management  examines their problems in
terms of severity,  frequency, and elapsed time. NB Management then balances the
record against whatever leadership the company may have demonstrated in terms of
environmental  policies,  procedures,  and practices.  NB Management  defines an
environmental  leadership company as one that puts into place strong


                                       51
<PAGE>


affirmative programs to minimize emissions,  promote safety, reduce waste at the
source, insure energy conservation,  protect natural resources,  and incorporate
recycling  into  its  processes  and  products.  NB  Management  looks  for  the
commitment  and active  involvement  of senior  management  in all these  areas.
Several major manufacturers which still produce substantial amounts of pollution
are among the leaders in  developing  outstanding  waste  source  reduction  and
remediation programs.

     Product. NB Management considers company announcements,  press reports, and
public interest publications relating to the health, safety, quality,  labeling,
advertising,  and  promotion  of  both  consumer  and  industrial  products.  NB
Management takes note of companies with a strong  commitment to quality and with
marketing practices which are ethical and consumer-friendly.  NB Management pays
particular   attention  to  companies   whose  products  and  services   promote
progressive solutions to social problems.

     Public Health.  NB Management  measures the  participation  of companies in
such industries and markets as alcohol,  tobacco, gambling and nuclear power. NB
Management  also  considers  the impact of  products  and  marketing  activities
related  to those  products  on  nutritional  and other  health  concerns,  both
domestically and in foreign markets.

     Weapons. NB Management keeps track of domestic military sales and, whenever
possible,  foreign  military  sales  and  categorizes  them as  nuclear  weapons
related,  other weapons  related,  and  non-weapon  military  supplies,  such as
micro-chip   manufacturers   and  companies  that  make  uniforms  for  military
personnel.

     Corporate Citizenship.  NB Management gathers information about a company's
participation  in community  affairs,  its policies  with respect to  charitable
contributions,  and its support of education and the arts.  NB Management  looks
for  companies  with a focus,  dealing with issues not just by making  financial
contributions, but also by asking the questions: What can we do to help? What do
we have to offer? Volunteerism, high-school mentoring programs, scholarships and
grants,  and  in-kind  donations  to  specific  groups  are just a few ways that
companies have responded to these questions.

Implementation of Social Policy

     Companies  deemed  acceptable by NB Management from a financial  standpoint
are analyzed using Neuberger Berman's database. The companies are then evaluated
by the portfolio  manager to determine if the  companies'  policies,  practices,
products,  and  services  withstand  scrutiny  in the  following  major areas of
concern:  the environment and workplace diversity and employment.  Companies are
then further  evaluated  to determine  their track record in issues and areas of
concern such as public health, weapons, product, and corporate citizenship.

     The  issues  and areas of  concern  that are  tracked  lend  themselves  to
objective analysis in varying degrees. Few, however, can be resolved entirely on
the basis of scientifically  demonstrable facts.  Moreover, a substantial amount
of  important  information  comes  from  sources  that  do  not  purport  to  be
disinterested.  Thus,  the  quality and  usefulness  of the  information  in the
database depend


                                       52
<PAGE>


on  Neuberger  Berman's  ability to tap a wide  variety  of  sources  and on the
experience  and  judgment  of the  people at NB  Management  who  interpret  the
information.

     In applying  the  information  in the database to stock  selection  for the
Portfolio,  NB Management  considers several factors. NB Management examines the
severity and frequency of various infractions, as well as the time elapsed since
their  occurrence.  NB  Management  also takes into account any remedial  action
which has been taken by the company relating to these infractions. NB Management
notes  any  quality  innovations  made by the  company  in its  effort to create
positive change and looks at the company's overall approach to social issues.

                           CERTAIN RISK CONSIDERATIONS

     A Portfolio's investment in its corresponding Series may be affected by the
actions of other large investors in the Series, if any. For example,  if a large
investor  in a Series  (other than a  Portfolio)  redeemed  its  interest in the
Series,  the Series' remaining  investors  (including the Portfolio) might, as a
result,  experience higher pro rata operating expenses,  thereby producing lower
returns.

     Although  each Series seeks to reduce risk by  investing  in a  diversified
portfolio of securities, diversification does not eliminate all risk. There can,
of  course,  be no  assurance  that  any  Series  will  achieve  its  investment
objective.

                             PERFORMANCE INFORMATION

     A Portfolio's performance may be quoted in advertising in terms of yield or
total return if accompanied by  performance of an insurance  company's  separate
account.  Each Portfolio's  performance figures are based on historical earnings
and are not intended to indicate future performance.  The share price (except in
the  case of the  Liquid  Asset  Portfolio),  yield  and  total  return  of each
Portfolio  will vary, and an investment in a Portfolio,  when  redeemed,  may be
worth more or less than the original purchase price.

Yield Calculations

     The Liquid Asset Portfolio may advertise its "current yield" and "effective
yield."  The  Portfolio's  current  yield is based  on the  return  for a recent
seven-day  period and is  computed  by  determining  the net  change  (excluding
capital changes) in the value of a hypothetical  account having a balance of one
share  at the  beginning  of  the  period,  subtracting  a  hypothetical  charge
reflecting deductions from shareholder accounts,  and dividing the difference by
the value of the account at the  beginning of the base  period.  The result is a
"base period  return," which is then annualized -- that is, the amount of income
generated  during the seven-day period is assumed to be generated each week over
a 52-week period -- and shown as an annual percentage of the investment.

         The effective yield of the Portfolio is calculated  similarly,  but the
base period  return is assumed to be  reinvested.  The assumed  reinvestment  is
calculated  by adding 1 to the base  period  return,  raising


                                       53
<PAGE>


the sum to a power equal to 365 divided by seven,  and  subtracting one from the
result, according to the following formula:

              Effective Yield = [(Base Period Return + 1)365/7] - 1

     For the seven  calendar days ended  December 31, 1998, the current yield of
the Liquid Asset Portfolio was 4.29%.  For the same period,  the effective yield
was 4.38%.

     Limited  Maturity Bond  Portfolio.  The Portfolio may advertise its "yield"
based on a 30-day (or one-month) period.  This yield is computed by dividing the
net investment income per share earned during the period by the maximum offering
price per share on the last day of the period. The result then is annualized and
shown as an annual percentage of the investment.

     The annualized yield for the Limited Maturity Bond Portfolio for the 30-day
period ended December 31, 1998 was 5.45%.

Total Return Computations. (All Portfolios except Liquid Asset Portfolio).

     A Portfolio may  advertise  certain  total return  information.  An average
annual  compounded  rate of return ("T") may be computed by using the redeemable
value  at the  end of a  specified  period  ("ERV")  of a  hypothetical  initial
investment of $1,000 ("P") over a period of time ("n") according to the formula:

                                P (1 + T)n = ERV

     Average  annual  total  return  smoothes  out  year-to-year  variations  in
performance and, in that respect,  differs from actual year-to-year  results. Of
course,  past  performance  cannot  be a  guarantee  of  future  results.  These
calculations assume that all dividends and distributions are reinvested.

     The  average  annual  total  returns  for the  Growth  Portfolio  (and  the
predecessor of the Growth Portfolio for the period prior to May 1, 1995) for the
one-,  five-,  and ten-year  periods  ended  December 31,  1998,  were  +15.53%,
+15.28%, and +13.89%, respectively.

     The average  annual total returns for the Limited  Maturity Bond  Portfolio
(and the predecessor of the Limited Maturity Bond Portfolio for the period prior
to May 1, 1995) for the one-,  five-,  and ten-year  periods ended  December 31,
1998, were +4.39%, +5.18%, and +6.79%, respectively.

     The average  annual  total  returns  for the  Balanced  Portfolio  (and the
predecessor  of the Balanced  Portfolio for the period prior to May 1, 1995) for
the one-year and five-year  periods ended  December 31, 1998, and for the period
from February 28, 1989 (commencement of operations),  through December 31, 1998,
were +12.18%, +11.37%, and +11.30%, respectively.

     The  average  annual  total  return  for the  Partners  Portfolio  (and the
predecessor  of the Partners  Portfolio for the period prior to May 1, 1995) for
the one year period  ended  December  31, 1998 and for the period from March 22,
1994  (commencement  of  operations)  through  December  31, 1998 was +4.21% and
+19.71% respectively.


                                       54
<PAGE>


     The average  annual total return for the Mid-Cap  Growth  Portfolio for the
one year period ended December 31, 1998 and the period since inception (November
3, 1997) through December 31, 1998 was +39.28% and +52.18%, respectively.

     The average annual total return for the Guardian Portfolio for the one year
period ended December 31, 1998 and the period since inception (November 3, 1997)
through December 31, 1998 was +31.67% and +32.20%, respectively.

     NB  Management  may waive a portion of its fee or reimburse  certain of the
Portfolios and  predecessors  of the Portfolios for certain  expenses during the
periods  shown,  which  has  the  effect  of  increasing  total  return.  Actual
reimbursements  and waivers are described in the  Prospectus  and in "Investment
Management and Administrative Services" below.

     Average annual total returns  quoted for the Portfolios  include the effect
of  deducting a  Portfolio's  expenses,  but may not  include  insurance-related
charges and other expenses  attributable  to any particular  insurance  product.
Since you can only purchase shares of a Portfolio  through a variable annuity or
variable life insurance contract (except with respect to the Balanced Portfolio,
which may also be purchased by Qualified  Plans) you should carefully review the
prospectus of the insurance  product you have chosen for information on relevant
charges and expenses.  Excluding  these charges from quotations of a Portfolio's
performance has the effect of increasing the performance quoted. You should bear
in mind the effect of these charges when comparing a Portfolio's  performance to
that of other mutual funds.

Comparative Information

     From time to time a Portfolio's performance may be compared with:

          (1) data (that may be expressed  as rankings or ratings)  published by
     independent services or publications  (including  newspapers,  newsletters,
     and financial  periodicals)  that monitor the  performance of mutual funds,
     such as Lipper Analytical  Services,  Inc.  ("Lipper"),  C.D.A.  Investment
     Technologies,  Inc., Wiesenberger Investment Companies Service,  Investment
     Company  Data Inc.,  IBC/Financial  Data Inc.'s  Money  Market Fund Report,
     Morningstar,  Inc.  ("Morningstar"),   Micropal  Incorporated,   VARDS  and
     quarterly mutual fund rankings by Money,  Fortune,  Forbes,  Business Week,
     Personal Investor, and U.S. News & World Report magazines,  The Wall Street
     Journal,  New  York  Times,  Kiplinger's  Personal  Finance,  and  Barron's
     Newspaper, or

          (2) recognized  bond,  stock and other  indices,  such as the Shearson
     Lehman Bond Index,  The Standard & Poor's 500  Composite  Stock Price Index
     ("S&P 500  Index"),  S&P Small Cap 600 ("S&P  600"),  S&P Mid Cap 400 ("S&P
     400"),  Russell 2000 Stock Index,  Russell Mid Cap Growth Index,  Dow Jones
     Industrial Average ("DJIA"),  Wilshire 1750, NASDAQ,  Montgomery Securities
     Growth Stock Index,  Value Line Index,  U.S.  Department of Labor  Consumer
     Price Index  ("Consumer  Price


                                       55
<PAGE>


     Index"),  College  Board  Survey of Colleges  Annual  Increases  of College
     costs,  Kanon Bloch's Family Performance Index, the Barra Growth Index, the
     Barra Value Index,  the EAFE(R) Index, the Financial Times World XUS Index,
     and various other domestic,  international, and global indices. The S&P 500
     Index is a broad index of common stock prices,  while the DJIA represents a
     narrower segment of industrial companies.  The S&P 600 includes stocks that
     range in market value from $35 million to $3.2 billion,  with an average of
     $514  million.  The S&P 400 measures  mid-sized  companies  with an average
     market  capitalization  of $2.1 billion.  The EAFE(R) Index is an unmanaged
     index of common  stock  prices of more than 1,000  companies  from  Europe,
     Australia,  and the Far East  translated into U.S.  dollars.  The Financial
     Times World XUS Index is an index of 24  international  markets,  excluding
     the  U.S.  market.  Each  assumes  reinvestment  of  distributions  and  is
     calculated  without regard to tax  consequences  or the costs of investing.
     Each  Portfolio  may invest in  different  types of  securities  from those
     included in some of the above indices.

     The Limited Maturity Bond Portfolio's performance may also be compared with
the Merrill Lynch 1-3 year Treasury Index and the Lehman  Brothers  Intermediate
Government/Corporate  Bond  Index,  as  well  as  the  performance  of  Treasury
Securities,  corporate  bonds,  and the Lipper Short Investment Grade Debt Funds
category.

     The Socially  Responsive  Portfolio's  performance  may also be compared to
various socially responsive  indices.  These include The Domini Social Index and
the indices developed by the quantitative  department of Prudential  Securities,
such as that  department's  Large and  Mid-Cap  portfolio  indices  for  various
breakdowns ("Sin" Stock Free, Cigarette-Stock Free, S&P Composite, etc.).

     Evaluations  of a  Portfolio's  performance,  its  yield/total  return  and
comparisons  may be used  in  advertisements  and in  information  furnished  to
present  and  prospective  shareholders  (collectively,  "Advertisements").  The
Portfolios  may also be  compared to  individual  asset  classes  such as common
stocks,  small-cap stocks, or Treasury bonds,  based on information  supplied by
Ibbotson and Sinquefield.

     Each Series may invest some of its assets in different  types of securities
than  those  included  in the  index  used  as a  comparison  with  the  Series'
historical  performance.  A  Series  may also  compare  certain  indices,  which
represent  different  segments  of the  securities  markets,  for the purpose of
comparing  the  historical  returns and  volatility of those  particular  market
segments.   Measures  of  volatility   show  the  range  of   historical   price
fluctuations.  Standard deviation may be used as a measure of volatility.  There
are other measures of volatility, which may yield different results.

     In addition,  the Income Series  performance  may be compared at times with
that of various bank  instruments  (including bank money market accounts and CDs
of  varying  maturities)  as  reported  in  publications  such as The Bank  Rate
Monitor.  Any such  comparisons may be useful to investors who wish to compare a
Portfolio's past performance with that of certain of its 


                                       56
<PAGE>


competitors.  Of course,  past performance is not a guarantee of future results.
Unlike an investment in a Portfolio, bank CDs pay a fixed rate of interest for a
stated period of time and are insured up to $100,000.

     Other  Performance  Information.  From  time to time,  information  about a
Series'  portfolio  allocation  and  holdings  as of a  particular  date  may be
included in Advertisements for the corresponding Portfolio. This information may
include the Series' portfolio diversification by asset type.


                                       57
<PAGE>


                              TRUSTEES AND OFFICERS

     The  following  table sets forth  information  concerning  the trustees and
officers  of the  Trusts,  including  their  addresses  and  principal  business
experience  during the past five  years.  Some  persons  named as  trustees  and
officers   also  serve  in  similar   capacities   for  other  funds  and  their
corresponding portfolios, advised by Neuberger Berman and NB Management.

<TABLE>
<CAPTION>
                                 Positions Held with
Name, Address and Age (1)             the Trusts         Principal Occupation(s) (2)
- ---------------------          -----------------------   -----------------------    
<S>                            <C>                       <C>
Stanley Egener*                Chairman of the Board,    Principal    of   Neuberger 
  Age: 65                      Chief Executive Officer   Berman;    President    and 
                               andTrustee                Director of NB  Management; 
                                                         Chairman  of  the  of  each 
                                                         Trust     Board,      Chief 
                                                         Executive   Officer,    and 
                                                         Trustee   of   nine   other 
                                                         mutual  funds  for which NB 
                                                         Management      acts     as 
                                                         investment    manager    or 
                                                         administrator.              

Faith Colish                   Trustee of each Trust     Attorney   at  law,   Faith     
63 Wall Street                                           Colish,    A   Professional     
24th Floor                                               Corporation.                
New York, NY  10005                                      
   Age: 63

Walter G. Ehlers               Trustee of each Trust     Consultant; Director of The
6806 Suffolk Place                                       Turner  Corporation,   A.B.
Harvey Cedars, NJ 08008                                  Chance     Company,     and
   Age: 66                                               Crescent Jewelry, Inc.     
                                                         

C. Anne Harvey                 Trustee of each Trust     Director     of    American 
2555 Pennsylvania Avenue, N.W.                           Association    of   Retired     
Washington, DC  20037                                    Persons   ("AARP")  Program     
  Age:  61                                               Services and  Administrator     
                                                         of  AARP  Foundation;   The     
                                                         National     Rehabilitation     
                                                         Hospital's     Board     of     
                                                         Advisors;        Individual     
                                                         Investors          Advisory 
                                                         Committee  to the New  York 
                                                         Stock   Exchange  Board  of 
                                                         Directors;         Steering 
                                                         Committee   for  the   U.S. 
                                                         Securities   and   Exchange 
                                                         Commission  Facts on Saving 
                                                         and Investing Campaign; and 
                                                         American Savings  Education 
                                                         Council's    Policy   Board 
                                                         (ASEC).                     
</TABLE>




                                       58
<PAGE>


<TABLE>
<CAPTION>
                                 Positions Held with
Name, Address and Age (1)             the Trusts         Principal Occupation(s) (2)
- ---------------------          -----------------------   ---------------------------
<S>                            <C>                       <C>
Leslie A.  Jacobson            Trustee of each  Trust    Counsel  to  Fried,  Frank,
24 Birdsall Farm Drive                                   Harris, Shriver & Jacobson,
Armonk, NY 10504                                         attorneys      at      law;
   Age: 88                                               previously   a  partner  of
                                                         that firm.                 
                                                         
Robert M. Porter               Trustee of each Trust     Retired  September,   1991; 
P.O. Box 33366                                           Formerly     Director    of     
Kerrville, TX  78029-3366                                Customer  Relations,  Aetna     
   Age: 73                                               Life & Casualty Company.    
                                                         
Ruth E. Salzmann               Trustee of each Trust     Retired;  Director  of John
1556 Pine Street                                         Deere   Insurance    Group;    
Stevens Point, WI  54481                                 Actuarial Consultant.      
   Age: 80                                               

Peter P. Trapp                 Trustee of each Trust     Assistant  Regional Manager
Ford Motor Credit Company                                for  Atlanta  Region,  Ford    
1455 Lincoln Parkway                                     Motor Credit  Company since    
Atlanta, GA  30346-2209                                  August,     1997;     prior    
   Age: 54                                               thereto,   President,  Ford    
                                                         Life   Insurance   Company,    
                                                         April,  1995 until  August,
                                                         1997;    Consultant    from
                                                         December, 1994 until April,
                                                         1995;    Vice    President,
                                                         Sentry  Insurance  & Mutual
                                                         Company,  and President and
                                                         Chief  Operating   Officer,
                                                         Sentry    Investors    Life
                                                         Insurance   Company   until
                                                         November, 1994.            
                                                         
Lawrence Zicklin*              President and Trustee of  Principal    of   Neuberger 
   Age: 63                     each Trust                Berman;   Director   of  NB     
                                                         Management;       President     
                                                         and/or Trustee of six other     
                                                         mutual funds and portfolios 
                                                         for  which  NB   Management 
                                                         acts as investment  manager 
                                                         or administrator.           
                                                         
Daniel J. Sullivan             Vice President of each    Senior Vice President of NB
   Age: 59                     Trust                     Management since 1992; Vice
                                                         President   of  nine  other
                                                         mutual  funds  for which NB
                                                         Management      acts     as
                                                         investment    manager    or
                                                         administrator.             
</TABLE>



                                       59
<PAGE>


<TABLE>
<CAPTION>
                                 Positions Held with
Name, Address and Age (1)             the Trusts         Principal Occupation(s) (2)
- ---------------------          -----------------------   ---------------------------
<S>                            <C>                       <C>
Michael J. Weiner*             Vice President and        Senior Vice President of NB 
   Age: 52                     Principal Financial       Management    since   1992; 
                               Officer of each Trust     Principal    of   Neuberger 
                                                         Berman      since     1998; 
                                                         Treasurer of NB  Management 
                                                         from  1992  to  1996;  Vice 
                                                         President   and   Principal 
                                                         Financial  Officer  of nine 
                                                         other   mutual   funds  for 
                                                         which NB Management acts as 
                                                         investment    manager    or 
                                                         administrator.              

Claudia A. Brandon             Secretary of each Trust   Vice    President   of   NB
   Age: 42                                               Management;   Secretary  of    
                                                         nine other mutual funds for    
                                                         which NB Management acts as    
                                                         investment    manager    or
                                                         administrator.             

Richard Russell                Treasurer and Principal   Vice    President   of   NB 
   Age: 52                     Accounting Officer of     Management    since   1993; 
                               each Trust                Treasurer   and   Principal 
                                                         Accounting  Officer of nine 
                                                         other   mutual   funds  for 
                                                         which NB Management acts as 
                                                         investment    manager    or 
                                                         administrator.              
                                                         

Stacy Cooper-Shugrue           Assistant Secretary of    Assistant Vice President of
   Age: 36                     each Trust                NB  Management  since 1993;
                                                         Assistant Secretary of nine
                                                         other   mutual   funds  for
                                                         which NB Management acts as
                                                         investment    manager    or
                                                         administrator.             

C. Carl Randolph               Assistant Secretary       Principal    of   Neuberger 
   Age: 61                     of each Trust             Berman      since     1992;     
                                                         Assistant Secretary of nine     
                                                         other   mutual   funds  for     
                                                         which NB Management acts as 
                                                         investment    manager    or 
                                                         administrator.              
                                                         
Barbara DiGiorgio              Assistant Treasurer of    Assistant Vice President of  
    Age: 40                    each Trust                NB  Management  since 1993;  
                                                         Assistant Treasurer of nine  
                                                         other   mutual   funds  for  
                                                         which NB Management acts as  
                                                         investment    manager    or  
                                                         administrator since 1996.    
</TABLE>



                                       60
<PAGE>


<TABLE>
<CAPTION>
                                 Positions Held with
Name, Address and Age (1)             the Trusts         Principal Occupation(s) (2)
- ---------------------          -----------------------   ---------------------------
<S>                            <C>                       <C>
Celeste Wischerth              Assistant Treasurer of    Assistant Vice President of
    Age: 38                    each Trust                NB  Management  since 1994;
                                                         prior thereto,  employee of
                                                         NB  Management,   Assistant
                                                         Treasurer   of  nine  other
                                                         mutual  funds  for which NB
                                                         Management      acts     as
                                                         investment    manager    or
                                                         administrator.             
</TABLE>



- ----------

(1) Unless  otherwise  indicated,  the business address of each listed person is
605 Third Avenue, New York, New York 10158.

(2) Except as otherwise  indicated,  each individual has held the position shown
for at least the last five years.

* Indicates an "interested  person" of each Trust within the meaning of the 1940
Act. Messrs.  Egener, Weiner and Zicklin are interested persons by virtue of the
fact that they are officers and  directors of NB  Management  and  principals of
Neuberger Berman.

     The Trust's Trust  Instrument  and Managers  Trust's  Declaration  of Trust
provide that each Trust will indemnify the Trustees and their  officers  against
liabilities  and expenses  reasonably  incurred in connection with litigation in
which they may be involved  because of their  offices with the Trust or Advisers
Trust,  respectively,  unless it is adjudicated  that they engaged in bad faith,
willful  misfeasance,  gross  negligence,  or reckless  disregard  of the duties
involved in their offices. In the case of settlement,  such indemnification will
not be  provided  unless  it has been  determined  -- by a court  or other  body
approving the settlement or other disposition, or by a majority of disinterested
Trustees,  based  upon a review  of  readily  available  facts,  or in a written
opinion  of  independent  counsel -- that such  officers  or  Trustees  have not
engaged in  willful  misfeasance,  bad  faith,  gross  negligence,  or  reckless
disregard of their duties.

     Trustees  who are not officers or  employees  of NB  Management,  Neuberger
Berman and/or the Life  Companies or any of their  affiliates are paid trustees'
fees.  For the year ended  December 31, 1998, a total of $103,958.59 in fees was
paid to the Trustees as a group by the Trust and a total of  $104,758.41 in fees
was paid to the Trustees as a group by Managers Trust. The following table shows
1998 compensation by Trustee.


                                       61
<PAGE>


                               COMPENSATION TABLE


<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------

                                                        Pension or                            Total Compensation
                                                        Retirement         Estimated          From Trust and Fund
                                 Aggregate              Benefits Accrued   Annual Benefits    Complex Paid to
Name of Person,                  Compensation From      As Part of         Upon Retirement    Trustees(1)
Position                         Trust(1)               Trust's Expenses
- -----------------------------------------------------------------------------------------------------------------
<S>                                 <C>                      <C>                <C>              <C>
Stanley Egener,                     None                     None               None             None(2)
   Chairman and Trustee

Faith Colish,                       $16,125                  None               None             $82,750(3)
   Trustee

Walter G. Ehlers,                   $15,250                  None               None             $31,000(4)
   Trustee

C. Anne Harvey,                     $12,080(4)               None               None             $24,167(4)
   Trustee

Leslie A. Jacobson,                 $13,750                  None               None             $27,500(4)
   Trustee

Robert M. Porter,                   $16,500                  None               None             $33,000(4)
   Trustee

Ruth E. Salzmann,                   $15,250                  None               None             $30,500(4)
   Trustee

Peter P. Trapp,                     $15,000                  None               None             $30,000(4)
   Trustee

Lawrence Zicklin,                   None                     None               None             None(3)
   President and Trustee
</TABLE>

- ----------
(1)  "Aggregate  Compensation From Trust" and "Total Compensation From Trust and
     Fund  Complex  Paid to  Trustees"  is for the period from January 1 through
     December 31, 1998. 

(2)  Nine other investment companies.

(3)  Five other investment companies.

(4)  One other investment company.


                                       62
<PAGE>


               CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES

     Shares of the  Portfolios  are  issued  and  redeemed  in  connection  with
investments  in and  payments  under  certain  variable  annuity  contracts  and
variable life insurance  policies  (collectively,  "Variable  Contracts") issued
through separate  accounts of life insurance  companies (the "Life  Companies").
Shares of the Balanced  Portfolio are also offered  directly to Qualified Plans.
As of March 31, 1999, the separate  accounts of the Life Companies were known to
the Board of  Trustees  and the  management  of the  Trust to own of record  all
shares of the Growth,  Guardian,  Liquid Asset,  Limited Maturity Bond,  Mid-Cap
Growth  and  Partners  Portfolios  of the Trust and  approximately  98.5% of the
shares  of the  Balanced  Portfolio  of the  Trust  and 9% of the  shares of the
Socially  Responsive  Portfolio of the Trust.  There were no shareholders of the
International  Portfolio as of that same date.  The Trustees of the Trust own in
the aggregate less than 1% of the total Trust shares issued and outstanding.

     As of March 31, 1999,  separate  accounts of the following  Life  Companies
owned of  record  or  beneficially  5% or more of the  Shares  of the  following
Portfolios:

                                                              Percentage of
                                                               Outstanding
                                                               Shares Owned
                                                               ------------
     Liquid Asset Portfolio

     Hartford Life Insurance Company*                             77.6%
     200 Hopmeadow
     Simsbury, CT  06070

     Sentry Life Insurance Company                                18.2%
     1800 North Point Drive
     Stevens Point, WI  54481

     Partners Portfolio

     Skandia Insurance Company*                                   28.8%
     P.O. Box 883
     Shelton, CT  06484


                                       63
<PAGE>


                                                              Percentage of
                                                               Outstanding
                                                               Shares Owned
                                                               ------------

     Nationwide Life Insurance*                                   54.8%
     P.O. Box 182029
     Columbus, OH  43218-2029

     Growth Portfolio

     Nationwide Life Insurance*                                   81.5%
     P.O. Box 182029
     Columbus, OH  43218-2029

     Sentry Life Insurance Company                                 8.7%
     1800 North Point Drive
     Stevens Point, WI  54481

     Limited Maturity Bond Portfolio

     Nationwide Life Insurance*                                   67.9%
     P.O. Box 182029
     Columbus, OH  43218-2029

     Penn Mutual Life Insurance Company                            5.0%
     600 Dresher Road
     Horsham, PA  19044

     Golden American Life Insurance Company                        7.2%
     f/b/o Security Life of Denver Insurance Company
     1475 Dunwoody Drive
     West Chester, PA  19308

     Balanced Portfolio

     Hartford Life Insurance Company                              15.2%
     200 Hopmeadow
     Simsbury, CT  06070


                                       64
<PAGE>


                                                              Percentage of
                                                               Outstanding
                                                               Shares Owned
                                                               ------------

     Nationwide Life Insurance*                                   41.6%
     P.O. Box 182029
     Columbus, OH  43218-2029

     Penn Mutual Life Insurance Company                           24.8%
     600 Dresher Road
     Horsham, PA  19044

     Sentry Life Insurance                                         7.2%
     1800 North Point Drive
     Stevens Point, WI  54481

     Guardian Portfolio

     Nationwide Life Insurance*
     P.O. Box 182029                                              99.4%
     Columbus, OH  43218-2029


     Mid-Cap Growth Portfolio

     Nationwide Life Insurance*                                   98.4%
     P.O. Box 182029
     Columbus, OH  43218-2029

     Socially Responsive Portfolio

     Neuberger Berman Management Inc.                             15.3%
     605 Third Avenue, 2nd Floor
     New York, NY 10158-0180

     Neuberger Berman, LLC*                                       75.6%
     605 Third Avenue, 2nd Floor
     New York, NY  10158-0180

     Northwestern National Life                                    9.0%
     Route 3806
     P.O. Box 20
     Minneapolis, MN 55440-0020

- ----------
     *These  entities owned of record 25% or more of the  outstanding  shares of
     beneficial  interest of the  Portfolio,  and  therefore  may be presumed to
     "control" the Portfolio, as that term is defined in the 1940 Act.


                                       65
<PAGE>


     These Life  Companies are required to vote  Portfolio  shares in accordance
with instructions  received from owners of Variable Contracts funded by separate
accounts  with  respect to separate  accounts of these Life  Companies  that are
registered  with the  Securities  and  Exchange  Commission  as unit  investment
trusts.

           INVESTMENT MANAGEMENT, ADVISORY AND ADMINISTRATION SERVICES

     All Portfolios and their corresponding Series

     Neuberger Berman is an investment  management firm with headquarters in New
York.  The  firm's  focus is on U.S.  fixed  income,  equity and  balanced  fund
management. Total assets under management by Neuberger Berman and its affiliates
were  approximately  $55.4  billion as of December 31, 1998.  Founded in 1939 to
manage  portfolios for high net worth  individuals,  the firm entered the mutual
fund  management  business in 1950,  and began  offering  active  management for
pension funds and  institutions in the mid-1970s.  Most money managers that come
to the Neuberger Berman  organization have at least fifteen years of experience.
Neuberger Berman and NB Management employ experienced professionals that work in
a competitive environment.

     Because all of the Portfolios' net investable  assets are invested in their
corresponding  Series,  the  Portfolios  do not need an investment  manager.  NB
Management  serves as each Series'  investment  manager pursuant to a Management
Agreement ("Management Agreement") dated as of May 1, 1995, that was approved by
the holders of the  interests  in all the Series on April 13, 1994  (except with
respect to AMT International,  Guardian, Mid-Cap Growth, and Socially Responsive
Investments).  The Trustees of Managers Trust approved the Management  Agreement
between:  AMT International  Investments and NB Management on November 30, 1995;
AMT Mid-Cap Growth Investments and AMT Guardian Investments and NB Management on
August 20, 1997; and AMT Socially  Responsive  Investments  and NB Management on
May 28, 1998.

     The Management Agreement provides in substance that NB Management will make
and implement  investment  decisions for the Series in its  discretion  and will
continuously  develop  an  investment  program  for  each  Series'  assets.  The
Management Agreement permits NB Management to effect securities  transactions on
behalf  of  each  Series  through  associated  persons  of  NB  Management.


                                       66
<PAGE>



The Management  Agreement also specifically permits NB Management to compensate,
through higher commissions,  brokers and dealers who provide investment research
and  analysis to the Series,  but NB  Management  has no current  plans to pay a
material amount of such compensation.

     NB  Management  provides  to  each  Series,  without  cost,  office  space,
equipment,   and  facilities  and  personnel  necessary  to  perform  executive,
administrative, and clerical functions and pays all salaries, expenses, and fees
of the officers,  trustees,  and  employees of Managers  Trust who are officers,
directors,  or employees of NB Management.  Three officers of NB Management (who
also are principals of Neuberger Berman and directors of NB Management) serve as
trustees and officers of the Trusts.  See "Trustees and Officers." NB Management
provides  similar  facilities  and  services  to each  Portfolio  pursuant to an
administration  agreement dated May 1, 1995 ("Administration  Agreement").  Each
Portfolio was  authorized to become subject to the  Administration  Agreement by
vote of the Trustees on May 26, 1994, except the International Portfolio,  which
became subject to it on May 1, 1995, the Mid-Cap Growth and Guardian Portfolios,
which  became  subject to it on August 20,  1997,  and the  Socially  Responsive
Portfolio, which became subject to it on May 28, 1998.

Management and Administration Fees

     For investment management services, AMT Balanced, Growth, Guardian, Mid-Cap
Growth,  Partners and Socially Responsive  Investments each pays NB Management a
fee at the annual rate of 0.55% of the first $250 million of the Series' average
daily  net  assets,  0.525%  of the next  $250  million,  0.50% of the next $250
million,  0.475% of the next $250 million,  0.45% of the next $500 million,  and
0.425% of average daily net assets in excess of $1.5 billion.  AMT International
Investments pays NB Management a fee for investment  management  services at the
annual rate of 0.85% of the first $250 million of the Series'  average daily net
assets, 0.825% of the next $250 million, 0.80% of the next $250 million,  0.775%
of the next $250  million,  0.75% of the next $500 million and 0.725% of average
daily net assets in excess of $1.5 billion. AMT Limited Maturity Bond and Liquid
Asset  Investments  each  pays NB  Management  a fee for  investment  management
services  at the annual  rate of 0.25% of the first $500  million of the Series'
average  daily net assets,  0.225% of the next $500  million,  0.20% of the next
$500 million,  0.175% of the next $500  million,  and 0.15% of average daily net
assets in excess of $2 billion.

     For administrative  services,  each Portfolio (except Limited Maturity Bond
and Liquid  Asset  Portfolios)  pays NB  Management  a fee at the annual rate of
0.30% of that Portfolio's average daily net assets. For administrative services,
Limited  Maturity Bond and Liquid Asset Portfolios each pays NB Management a fee
at the annual rate of 0.40% of average daily net assets.

     During the fiscal  years  ended  December  31,  1998,  1997 and 1996,  each
Portfolio accrued management and administration fees as follows:


                                       67
<PAGE>


                                        Management and Administration Fees      
                                             Accrued for Fiscal Years
Portfolio                                       Ended December 31

                                       1998             1997             1996
                                       ----             ----             ----
Growth                             $ 4,754,721      $ 5,336,566      $ 4,704,750
Limited Maturity Bond              $ 1,726,341      $ 1,642,678      $ 1,611,437
Liquid Asset                       $    96,793      $    91,752      $    98,887
Guardian                           $   308,524      $       397               --
Balanced                           $ 1,418,336      $ 1,554,602      $ 1,425,077
Partners                           $13,672,777      $ 9,277,108      $ 3,295,383
Mid-Cap Growth                     $   114,303      $       681               --


     The Management  and  Administration  Agreements  each continue until May 1,
2000. The Management  Agreement is renewable from year to year with respect to a
Series, so long as its continuance is approved at least annually (1) by the vote
of a majority of Managers Trust's  Trustees who are not "interested  persons" of
NB Management or Managers Trust ("Independent Series Trustees"),  cast in person
at a meeting called for the purpose of voting on such  approval,  and (2) by the
vote of a majority of Managers  Trust's  Trustees or by a 1940 Act majority vote
of the  outstanding  shares in that  Series.  The  Administration  Agreement  is
renewable  from  year  to  year  with  respect  to a  Portfolio,  so long as its
continuance  is approved at least  annually (1) by the vote of a majority of the
trustees  of the  Trust  (the  "Portfolio  Trustees")  who are  not  "interested
persons" of NB Management or the Trust ("Independent Portfolio Trustees"),  cast
in person at a meeting  called for the purpose of voting on such  approval,  and
(2) by the  vote  of a  majority  of the  Portfolio  Trustees  or by a 1940  Act
majority  vote of the  outstanding  shares  in that  Portfolio.  The  Management
Agreement is  terminable  with respect to a Series  without  penalty on 60 days'
prior  written  notice  either  by  Managers  Trust  or  by NB  Management.  The
Administration  Agreement  is  terminable  with  respect to a Portfolio  without
penalty by NB  Management  upon at least 120 days' prior  written  notice to the
Portfolio,  and by the  Portfolio  if  authorized  by  the  Portfolio  Trustees,
including a majority of the Independent Portfolio Trustees, on at least 30 days'
prior written notice to NB Management.  Each Agreement terminates  automatically
if it is assigned.

Expense Limitations



                                       68
<PAGE>


All Portfolios and their Corresponding Series (except International and Socially
Responsive  Portfolios  and  their  corresponding  Series).  NB  Management  has
voluntarily  undertaken to limit the  Portfolios'  expenses by reimbursing  each
Portfolio  for its  total  operating  expenses  and its pro  rata  share  of its
corresponding Series' total operating expenses, excluding the compensation of NB
Management (with respect to all Portfolios but the Guardian,  Mid-Cap Growth and
Liquid Asset Portfolios),  taxes, interest,  extraordinary  expenses,  brokerage
commissions and transaction  costs, that exceed, in the aggregate,  1% per annum
of the Portfolio's average daily net asset value. This undertaking is subject to
termination  upon at least 60 days'  prior  written  notice  to the  appropriate
Portfolio.  The Guardian and Mid-Cap Growth  Portfolios have each in turn agreed
to repay through December 31, 1999, for the excess,  operating expenses borne by
NB Management,  so long as the Portfolio's annual operating expenses during that
period do not exceed the expense limitation.

International and Socially Responsive Portfolios and their Corresponding Series.
NB  Management  has  voluntarily  undertaken  until  May 1,  2000 to  limit  the
Portfolios'  expenses by reimbursing each Portfolio for total operating expenses
and its pro rata share of its  corresponding  Series' total operating  expenses,
including  compensation  to  NB  Management,   but  excluding  taxes,  interest,
extraordinary expenses and brokerage commissions, that exceed, in the aggregate,
1.70% per annum of the International  Portfolio's  average daily net asset value
and 1.50% per annum of the Socially  Responsive  Portfolio's  average  daily net
asset value.  Each  Portfolio has in turn agreed to repay  through  December 31,
2001 for the excess  operating  expenses borne by NB Management,  so long as the
Portfolio's  annual  operating  expenses  during  that  period do not exceed the
expense limitation.

     The  effect  of  any  expense  limitation  by NB  Management  is to  reduce
operating  expenses  of a  Portfolio  and its  corresponding  Series and thereby
increase  total return.  There can no assurance  that these  expense  limitation
agreements will be continued or extended.

     For the year ended  December 31, 1998, NB Management  reimbursed the Liquid
Asset Portfolio  $20,005,  the Mid-Cap Growth Portfolio $58,074 and the Guardian
Portfolio $50,071. For the year ended December 31, 1997 NB Management reimbursed
the Liquid Asset Portfolio $15,867,  the Mid-Cap Growth Portfolio  $13,432,  and
the  Guardian  Portfolio  $13,586.  For the year ended  December  31,  1996,  NB
Management reimbursed the Liquid Asset Portfolio $30,558.

Management and Control of NB Management

     The  directors and officers of NB  Management,  all of whom have offices at
the same address as NB Management,  are Richard A. Cantor, Chairman of the Board
and director; Stanley Egener, President and director; Theodore P. Giuliano, Vice
President and director;  Michael M. Kassen,  Vice President and director;  Irwin
Lainoff,  director;  Lawrence Zicklin, director; Daniel J. Sullivan, Senior Vice
President;  Peter E. Sundman,  Senior Vice President;  Michael J. Weiner, Senior
Vice  President;  Claudia A. Brandon,  Vice  President;  Patrick T. Byrne,  Vice
President;  Brooke A. Cobb, Vice President;  Robert W. D'Alelio, Vice President;
Clara Del Villar, Vice President;  Brian J. Gaffney,  Vice President;  Joseph G.
Galli,  Vice  President;  Robert I.  Gendelman,  Vice  President;  Josephine  P.
Mahaney, Vice President;  Michael F. Malouf, Vice President; Ellen Metzger, Vice
President and Secretary;  Paul Metzger,  Vice President;  S. Basu Mullick,  Vice
President;  Janet W. Prindle,  Vice 


                                       69
<PAGE>


President;  Kevin L. Risen,  Vice President;  Richard  Russell,  Vice President;
Jennifer K. Silver, Vice President; Kent C. Simons, Vice President;  Frederic B.
Soule,  Vice  President;  Judith M. Vale,  Vice  President;  Susan  Walsh,  Vice
President;  Catherine  Waterworth,  Vice  President;  Allan R. White,  III, Vice
President;  Andrea  Trachtenberg,  Senior Vice  President of  Marketing;  Robert
Conti,  Treasurer;  Ramesh  Babu,  Assistant  Vice  President;   Valerie  Chang,
Assistant  Vice  President;  Stacy  Cooper-Shugrue,  Assistant  Vice  President;
Barbara DiGiorgio, Assistant Vice President; Michael J. Hanratty, Assistant Vice
President;  Robert L.  Ladd,  Assistant  Vice  President;  Carmen  G.  Martinez,
Assistant Vice  President;  Joseph S. Quirk,  Assistant Vice  President;  Ingrid
Saukaitis,  Assistant Vice President; Josephine Velez, Assistant Vice President;
Celeste Wischerth,  Assistant Vice President;  and Loraine Olavarria,  Assistant
Secretary.  Messrs.  Cantor,  D'Alelio,  Egener,  Gendelman,  Giuliano,  Kassen,
Lainoff,  Risen, Simons,  Sundman,  Weiner, White and Zicklin and Mmes. Prindle,
Silver and Vale are principals of Neuberger Berman.

     Messrs. Egener and Zicklin are trustees and officers of each Trust. Messrs.
Russell, Sullivan, and Weiner, and Mmes. Brandon, Cooper-Shugrue, DiGiorgio, and
Wischerth are officers of each Trust. C. Carl Randolph, a principal of Neuberger
Berman, also is an officer of each Trust.

     All of the  outstanding  voting stock in NB  Management is owned by persons
who are also principals of Neuberger Berman.

Sub-Adviser

     NB Management  retains  Neuberger  Berman,  605 Third Avenue,  New York, NY
10158, as a sub-adviser with respect to each Series.  Except with respect to the
International,  Mid-Cap Growth, Guardian and Socially Responsive Portfolios, the
Sub-Advisory   Agreement  was  authorized  by  the   Portfolios'   predecessors'
shareholders on August 25, 1994 and was approved by the holders of the interests
in each Series on April 13, 1994. The  Sub-Advisory  Agreement was authorized by
the Trustees of Managers Trust with respect to AMT International  Investments on
November 30, 1995,  with respect to AMT Mid-Cap Growth and Guardian  Investments
on August 20, 1997, and with respect to AMT Socially  Responsive  Investments on
May 28, 1998.

     The Sub-Advisory Agreement provides in substance that Neuberger Berman will
furnish to NB Management,  upon reasonable request,  investment  recommendations
and research  information  of the same type that  Neuberger  Berman from time to
time  provides  to its  principals  and  employees  for use in  managing  client
accounts,  as NB Management  reasonably requests.  In this manner, NB Management
expects to have available to it, in addition to research from other professional
sources, the capability of the research staff of Neuberger Berman. This research
staff  consists of numerous  investment  analysts,  each of whom  specializes in
studying one or more industries,  under the supervision of research partners who
are  also  available  for  consultation  with NB  Management.  The  Sub-Advisory
Agreement  provides that the services  rendered by Neuberger Berman will be paid
for by NB Management on the basis of the direct and indirect  costs to Neuberger
Berman in  connection  with those  services.  Neuberger  Berman also serves as a
sub-adviser for all of the other mutual funds advised by NB Management.


                                       70
<PAGE>


     The Sub-Advisory  Agreement continues with respect to each series until May
1, 2000, and is renewable from year to year  thereafter,  subject to approval of
its continuance in the same manner as the Management Agreement. The Sub-Advisory
Agreement  is subject to  termination,  without  penalty,  with  respect to each
Series  by  the  Series'  Trustees,  or by a  1940  Act  majority  vote  of  the
outstanding  shares of that Series, by NB Management,  or by Neuberger Berman on
not less than 30 nor more than 60 days' prior written notice to the  appropriate
Series. The Sub-Advisory Agreement also terminates automatically with respect to
each Series if it is assigned or if the  Management  Agreement  terminates  with
respect to the Series.

     Most money managers that come to the Neuberger Berman  organization have at
least  fifteen  years  experience.  Neuberger  Berman and NB  Management  employ
experienced professionals that work in a competitive environment.

     The Series  are  subject to  certain  limitations  imposed on all  advisory
clients of Neuberger Berman  (including the Series,  other mutual funds referred
to below  ("Other NB Funds"),  and other  accounts)  and  personnel of Neuberger
Berman and its  affiliates.  These  include,  for  example,  limits  that may be
imposed in certain industries or by certain companies, and policies of Neuberger
Berman that limit the aggregate purchases, by all accounts under management,  of
outstanding shares of public companies.

Investment Companies Advised

     NB  Management  currently  serves as  investment  adviser or manager of the
following investment companies,  which had aggregate net assets of approximately
$20.2 billion, as of December 31, 1998.  Neuberger Berman acts as sub-adviser to
these investment companies.

                                                                Approximate Net
                                                                   Assets at
Name                                                           December 31, 1998
- ----                                                           -----------------

Neuberger Berman Cash Reserves .............................      $  981,140,568
Portfolio (investment portfolio for
Neuberger Berman Cash Reserves)

Neuberger Berman Government Money ..........................      $  440,406,207
Portfolio (investment portfolio for
Neuberger Berman Government Money
Fund)

Neuberger Berman Limited Maturity Bond .....................      $  348,406,527
Portfolio (investment portfolio for
Neuberger Berman Limited Maturity
Bond Fund and Neuberger Berman


                                       71
<PAGE>


                                                                Approximate Net
                                                                   Assets at
Name                                                           December 31, 1998
- ----                                                           -----------------

Limited Maturity Bond Trust)

Neuberger Berman High Yield Bond Portfolio .................      $   26,558,174
(investment portfolio for Neuberger Berman
High Yield Bond Fund)

Neuberger Berman Municipal Money ...........................      $  199,204,243
Portfolio (investment portfolio for
Neuberger Berman Municipal Money Fund)

Neuberger Berman Municipal Securities ......................      $   39,108,246
Portfolio (investment portfolio for
Neuberger Berman Municipal Securities Trust)

Neuberger Berman Genesis Portfolio .........................      $2,108,218,180
(investment portfolio for Neuberger Berman
Genesis Fund, Neuberger Berman
Genesis Trust and Neuberger Berman Genesis Assets)

Neuberger Berman Guardian Portfolio ........................      $6,129,925,896
(investment portfolio for Neuberger Berman
Guardian Fund, Neuberger Berman
Guardian Trust and Neuberger Berman
Guardian Assets)

Neuberger Berman Manhattan Portfolio .......................      $  687,293,400
(investment portfolio for Neuberger Berman
Manhattan Fund, Neuberger Berman
Manhattan Trust and Neuberger Berman
Manhattan Assets)

Neuberger Berman Millennium Portfolio ......................      $   19,345,561
(investment portfolio for Neuberger Berman
Millenium Fund and Neuberger Berman Millenium
Trust)

Neuberger Berman International Portfolio ...................      $  129,228,022
(investment portfolio for Neuberger Berman
International Fund and Neuberger Berman
International Trust)


                                       72
<PAGE>

                                                                Approximate Net
                                                                   Assets at
Name                                                           December 31, 1998
- ----                                                           -----------------

Neuberger Berman Partners Portfolio ........................      $4,210,143,373
(investment portfolio for Neuberger Berman
Partners Fund, Neuberger Berman
Partners Trust and Neuberger Berman
Partners Assets)

Neuberger Berman Focus Portfolio ...........................      $1,660,583,608
(investment portfolio for Neuberger Berman
Focus Fund, Neuberger Berman Focus
Trust and Neuberger Berman Focus Assets)

Neuberger Berman Socially Responsive .......................      $  363,240,337
Portfolio (investment portfolio for
Neuberger Berman Socially Responsive Fund,
Neuberger Berman Socially Responsive Trust,
Neuberger Berman Socially Responsive Assets and
Neuberger Berman NYCDC Socially Responsive Trust

Advisers Managers Trust (seven series) .....................      $2,823,523,160

     The investment  decisions concerning each Series and the other mutual funds
referred to above  (collectively,  "Other NB Funds") have been and will continue
to  be  made  independently  of  one  another.  In  terms  of  their  investment
objectives,  most of the Other NB Funds  differ from the Series.  Even where the
investment  objectives  are similar,  however,  the methods used by the Other NB
Funds and the Series to achieve  their  objectives  may differ.  The  investment
results  achieved by all of the funds managed by NB Management  have varied from
one another in the past and are likely to vary in the future.

     There may be occasions  when a Series and one or more of the Other NB Funds
or other accounts managed by Neuberger Berman are  contemporaneously  engaged in
purchasing or selling the same  securities  from or to third parties.  When this
occurs,  the  transactions  are averaged as to price and allocated,  in terms of
amount,  in  accordance  with a formula  considered to be equitable to the funds
involved.  Although in some cases this arrangement may have a detrimental effect
on the price or volume of the  securities  as to a Series,  in other cases it is
believed  that a Series'  ability  to  participate  in volume  transactions  may
produce better executions for it. In any case, it is the judgment of the Series'
Trustees that the  desirability of each Series having its advisory  arrangements
with  NB   Management   outweighs  any   disadvantages   that  may  result  from
contemporaneous transactions.

                            DISTRIBUTION ARRANGEMENTS



                                       73
<PAGE>


     NB Management serves as the distributor  ("Distributor") in connection with
the offering of each  Portfolio's  shares.  In  connection  with the sale of its
shares,  each  Portfolio  has  authorized  the  Distributor  to  give  only  the
information,  and to make only the statements and representations,  contained in
the Prospectus and this SAI or that properly may be included in sales literature
and advertisements in accordance with the 1933 Act, the 1940 Act, and applicable
rules  of  self-regulatory  organizations.   Sales  may  be  made  only  by  the
Prospectus,  which  may  be  delivered  personally,  through  the  mails,  or by
electronic  means. The Distributor is each Portfolio's  "principal  underwriter"
within the meaning of the 1940 Act and, as such,  acts as agent in arranging for
the  sale  of  each  Portfolio's   shares  without  sales  commission  or  other
compensation  and bears all advertising and promotion  expenses  incurred in the
sale of the Portfolios' shares.

     The Trust, on behalf of each Portfolio,  and the Distributor are parties to
a Distribution  Agreement  dated May 1, 1995,  that continues until May 1, 2000.
The Distribution  Agreement may be renewed  annually  thereafter if specifically
approved by (1) the vote of a majority of the  Portfolio  Trustees or a 1940 Act
majority  vote of the  Portfolio's  outstanding  shares  and  (2) the  vote of a
majority  of the  Independent  Portfolio  Trustees,  cast in person at a meeting
called for the purpose of voting on such approval.  The  Distribution  Agreement
may be  terminated  by either  party  and will  automatically  terminate  on its
assignment,  in the same manner as the Management Agreement and the Sub-Advisory
Agreement.


                                       74
<PAGE>


                 ADDITIONAL PURCHASE AND REDEMPTION INFORMATION

Share Prices and Net Asset Value

     Each  Portfolio's  shares  are  bought  or  sold  at a  price  that  is the
Portfolio's  NAV per  share.  The  NAVs for each  Series  and its  corresponding
Portfolio are calculated by subtracting  total liabilities from total assets (in
the case of a Series,  the market value of the  securities the Series holds plus
cash and other assets;  in the case of a Portfolio,  its percentage  interest in
its corresponding Series, multiplied by the Series' NAV, plus any other assets).
Each  Portfolio's  per share NAV is calculated by dividing its NAV by the number
of Portfolio's  shares  outstanding  and rounding the result to the nearest full
cent. Each Portfolio and its corresponding Series calculate their NAVs as of the
close of regular trading on the NYSE,  usually 4 p.m.  Eastern time, on each day
the NYSE is open.

     The  Liquid  Asset  Portfolio  tries to  maintain a stable NAV of $1.00 per
share. Its corresponding  Series values its securities at their cost at the time
of purchase and assumes a constant  amortization  to maturity of any discount or
premium.  Although the Portfolio's  reliance on Rule 2a-7 and the Series' use of
the amortized  cost  valuation  method should enable the  Portfolio,  under most
conditions, to maintain a stable $1.00 share price, there can be no assurance it
will be able to do so. An  investment  in the Liquid Asset  Portfolio is neither
insured nor guaranteed by the U.S. Government.

     The Equity Series (except AMT International  Investments)  value securities
(including  options)  listed on the NYSE,  the American  Stock Exchange or other
national  securities  exchanges or quoted on The Nasdaq Stock Market,  and other
securities  for which  market  quotations  are  readily  available,  at the last
reported sale price on the day the securities  are being valued.  If there is no
reported sale of such a security on that day, the security is valued at the mean
between its closing bid and asked  prices on that day.  These  Series  value all
other securities and assets,  including restricted securities,  by a method that
the trustees of Managers Trust believe accurately reflects fair value.

     AMT International Investments values equity securities at the last reported
sale price on the principal exchange or in the principal over-the-counter market
in which such  securities are traded,  as of the close of regular trading on the
NYSE on the day the  securities  are being valued or, if there are no sales,  at
the last  available  bid price on that day. Debt  obligations  are valued at the
last  available  bid  price  for such  securities  or,  if such  prices  are not
available,  at prices for securities of comparable maturity,  quality, and type.
Foreign  securities  are translated  from the local  currency into U.S.  dollars
using current  exchange  rates.  The Series values all other types of securities
and assets,  including  restricted  securities  and  securities for which market
quotations are not readily available,  by a method that the trustees of Managers
Trust believe accurately reflects fair value.

     AMT International  Investments portfolio securities are traded primarily in
foreign markets which may be open on days when the NYSE is closed.  As a result,
the NAV of the 


                                       75
<PAGE>


International  Portfolio may be significantly affected on days when shareholders
have no access to that Portfolio.  Similarly,  as discussed above under "Foreign
Securities,"  other Series may invest to varying  degrees in  securities  traded
primarily in foreign  markets,  and their (and their  corresponding  Portfolios)
share  prices may also be affected on days when  shareholders  have no access to
the Portfolios.

     AMT  Limited   Maturity  Bond  and  Balanced  (debt   securities   portion)
Investments  value  their  securities  on  the  basis  of  bid  quotations  from
independent  pricing services or principal market makers,  or, if quotations are
not  available,  by a  method  that  the  trustees  of  Managers  Trust  believe
accurately  reflects  fair  value.  The Series  periodically  verify  valuations
provided  by  the  pricing  services.   Short-term   securities  with  remaining
maturities of less than 60 days may be valued at cost which,  when combined with
interest earned, approximates market value.

     If NB  Management  believes that the price of a security  obtained  under a
Series' valuation  procedures (as described above) does not represent the amount
that the Series reasonably expects to receive on a current sale of the security,
the Series  will  value the  security  based on a method  that the  trustees  of
Managers Trust believe accurately reflects fair value.

Suspension of Redemptions

     The  Portfolios  are normally  open for business  each day the NYSE is open
("Business  Day"). The right to redeem a Portfolio's  shares may be suspended or
payment of the redemption price postponed (1) when the NYSE is closed,  (2) when
trading on the NYSE is restricted,  (3) when an emergency  exists as a result of
which disposal by the Portfolio's corresponding Series of securities owned by it
is not  reasonably  practicable  or it is not  reasonably  practicable  for that
Series  fairly to determine  the value of its net assets,  or (4) for such other
period  as the SEC may by  order  permit  for the  protection  of a  Portfolio's
shareholders; provided that applicable SEC rules and regulations shall govern as
to  whether  the  conditions  prescribed  in (2) or (3)  exist.  If the right of
redemption is suspended, shareholders may withdraw their offers of redemption or
they  will  receive  payment  at the NAV per  share in  effect  at the  close of
business on the first Business Day after termination of the suspension.

Redemptions in Kind

     Each Portfolio reserves the right, under certain  conditions,  to honor any
request for redemption  (or a combination of requests from the same  shareholder
in any  90-day  period)  exceeding  $250,000  or 1% of  the  net  assets  of the
Portfolio,  whichever  is  less,  by  making  payment  in  whole  or in  part in
securities  valued as described  under "Share Prices and Net Asset Value" in the
Prospectus. If payment is made in securities, a shareholder generally will incur
brokerage  expenses or other  transaction  costs in converting  those securities
into cash and will be  subject  to  fluctuation  in the  market  prices of those
securities  until  they are sold.  The  Portfolios  do not  redeem in kind under
normal circumstances,  but would do so when the Trust's Trustees determined that
it was in the best interests of a Portfolio's shareholders as a whole.


                                       76
<PAGE>


                        DIVIDENDS AND OTHER DISTRIBUTIONS

     Each Portfolio distributes to its shareholders (primarily insurance company
separate  accounts and Qualified  Plans)  substantially  all of its share of its
corresponding  Series' net investment income (after deducting  expenses incurred
directly by the Portfolio),  any net realized capital gains and, with respect to
all Portfolios  except the Liquid Asset  Portfolio,  any net realized gains from
foreign currency  transactions,  if any, earned or realized by its corresponding
Series.  Each Portfolio  calculates its net investment  income and NAV as of the
close of regular  trading on the NYSE (usually  4:00 p.m.  Eastern time) on each
Business Day. A Series' net investment  income consists of all income accrued on
portfolio  assets less  accrued  expenses,  but does not include net realized or
unrealized  capital and foreign currency gains or losses.  Net investment income
and net  gains and  losses  are  reflected  in a Series'  NAV (and,  hence,  its
corresponding  Portfolio's NAV) until they are distributed.  With respect to the
Mid-Cap Growth,  Guardian,  Growth, Partners,  Balanced,  Limited Maturity Bond,
Socially Responsive and International Portfolios,  dividends from net investment
income and  distributions  of net realized  capital gains and net realized gains
from foreign currency transactions,  if any, normally are paid once annually, in
February.   The  Liquid  Asset   Portfolio   distributes  to  its   shareholders
substantially  all of its  share of its  corresponding  Series'  net  investment
income (net of the Portfolio's  expenses) and net realized capital gains. Income
dividends are declared daily for the Liquid Asset  Portfolio at the time its NAV
is calculated and are paid monthly,  and net realized capital gains, if any, are
normally distributed annually in February.

                           ADDITIONAL TAX INFORMATION

     Set forth below is a discussion of certain U.S.  federal  income tax issues
concerning  the  Portfolios  and the Series  and the  purchase,  ownership,  and
disposition of Portfolio shares. This discussion does not purport to be complete
or to deal with all aspects of federal  income  taxation that may be relevant to
shareholders  in light of their  particular  circumstances.  This  discussion is
based upon present  provisions of the Internal  Revenue Code of 1986, as amended
(the  "Code"),  the  regulations  promulgated   thereunder,   and  judicial  and
administrative  ruling  authorities,  all of which are subject to change,  which
change may be retroactive.  Prospective  investors  should consult their own tax
advisers with regard to the federal tax consequences of the purchase, ownership,
or  disposition of Portfolio  shares,  as well as the tax  consequences  arising
under the laws of any state, foreign country, or other taxing jurisdiction.

Taxation of Each Portfolio

     Subchapter M

     To  continue  to  qualify  for  treatment  as a RIC under  the  Code,  each
Portfolio must distribute to its shareholders for each taxable year at least 90%
of its investment company taxable income (consisting generally of net investment
income,  net short-term capital gain, and, with respect to all Portfolios except
the  Liquid  Asset   Portfolio,   net  gains  from  certain   foreign   currency
transactions)  ("Distribution  Requirement")  and must meet  several  additional
requirements.  With respect to each Portfolio,  these  requirements  include the
following:  (1) the Portfolio  must derive at least 90% of its


                                       77
<PAGE>


gross income each taxable year from dividends,  interest,  payments with respect
to  securities  loans,  and gains from the sale or other  disposition  of stock,
securities or foreign currencies, or other income (including gains from options,
futures, and forward contracts  (collectively,  "Hedging  Instruments")) derived
with  respect  to its  business  of  investing  in  such  stock,  securities  or
currencies ("Income  Requirement");  and (2) at the close of each quarter of the
Portfolio's taxable year, (i) at least 50% of the value of its total assets must
be represented by cash and cash items, U.S. Government securities, securities of
other RICs and other  securities  limited,  in respect of any one issuer,  to an
amount that does not exceed 5% of the value of the Portfolio's  total assets and
that  does not  represent  more  than  10% of the  issuer's  outstanding  voting
securities,  and (ii) not more than 25% of the value of its total  assets may be
invested in securities (other than U.S.  Government  securities or securities of
other  RICs)  of  any  one  issuer  (together  with  the  50%  requirement,  the
"Diversification   Requirement").   Each   Portfolio   intends  to  satisfy  the
Distribution  Requirement,  the  Income  Requirement,  and  the  Diversification
Requirement.  If a Portfolio  failed to qualify for  treatment  as a RIC for any
taxable  year,  it would be taxed on the full amount of its  taxable  income for
that  year  without  being  able to  deduct  the  distributions  it makes to its
shareholders and the shareholders would treat all those distributions, including
distributions of net capital gain (the excess of net long-term capital gain over
net short-term  capital loss), as dividends  (that is,  ordinary  income) to the
extent of the Portfolio's earnings and profits.

     The Trust and  Managers  Trust  have  received a ruling  from the  Internal
Revenue Service ("Service"), except with respect to the Guardian, Mid-Cap Growth
and Socially  Responsive  Portfolio,  that each  Portfolio,  as an investor in a
corresponding  Series of Managers  Trust,  will be deemed to own a proportionate
share of the Series' assets and income for purposes of  determining  whether the
Portfolio  satisfies  the  requirements  described  above to  qualify  as a RIC.
Although  these  rulings may not be relied on as precedent by Guardian,  Mid-Cap
Growth, or Socially Responsive Portfolios,  NB Management believes the reasoning
thereof and, hence, their conclusion applies to those Portfolios as well.

     The Socially  Responsive  Portfolio will be subject to a  nondeductible  4%
excise tax ("Excise Tax") to the extent it fails to distribute by the end of any
calendar year substantially all of its ordinary income for that year and capital
gain net income for the one-year  period ending on October 31 of that year, plus
certain other  amounts.  To avoid  application  of the Excise Tax, the Portfolio
intends to make distributions in accordance with the calendar year requirement.

     A distribution will be treated as paid on December 31 of a calendar year if
it is declared by a Portfolio in October, November or December of that year with
a record date in such a month and paid by the  Portfolio  during  January of the
following year.

     Section 817(h)

     The Portfolios  serve as the underlying  investments  for variable  annuity
contracts and variable life insurance  policies  ("Variable  Contracts")  issued
through separate  accounts of the life insurance  companies which may or may not
be  affiliated.  Section  817(h)  of the Code  imposes  certain  diversification
standards  on the  underlying  assets of  segregated  asset  accounts  that fund
contracts  such as the Variable  Contracts  (that is, the assets of the Series),
which  are  in  addition  to the  diversification


                                       78
<PAGE>


requirements  imposed on the  Portfolios by the 1940 Act and Subchapter M of the
Code.  Failure to satisfy those  standards would result in imposition of Federal
income tax on a Variable  Contract  owner with  respect to the  increase  in the
value of the Variable  Contract.  Section  817(h)(2)  provides that a segregated
asset account that funds contracts such as the Variable  Contracts is treated as
meeting  the  diversification  standards  if, as of the  close of each  calendar
quarter,  the assets in the account meet the diversification  requirements for a
regulated  investment  company and no more than 55% of those  assets  consist of
cash, cash items, U.S.  Government  securities and securities of other regulated
investment companies.

     The Treasury Regulations amplify the diversification standards set forth in
Section  817(h) and provide an  alternative  to the provision  described  above.
Under  the  regulations,  an  investment  portfolio  will be  deemed  adequately
diversified  if (i) no more  than 55% of the  value of the  total  assets of the
portfolio is  represented by any one  investment;  (ii) no more than 70% of such
value is  represented  by any two  investments;  (iii) no more  than 80% of such
value is represented by any three investments; and (iv) no more than 90% of such
value is represented by any four investments.  For purposes of these Regulations
all securities of the same issuer are treated as a single  investment,  but each
United  States  government  agency  or  instrumentality  shall be  treated  as a
separate issuer.

     Each Series will be managed  with the  intention  of  complying  with these
diversification requirements. It is possible that, in order to comply with these
requirements, less desirable investment decisions may be made which would affect
the investment performance of a Portfolio.

     Section  817 of the Code and the  Treasury  Regulations  thereunder  do not
currently  address  variable  contract  diversification  in  the  context  of  a
master/feeder fund structure,  and Socially  Responsive,  the Trust and Managers
Trust,  except  with  respect to the  Guardian,  Mid-Cap  Growth,  and  Socially
Responsive Portfolios,  have received a ruling from the Internal Revenue Service
concluding that the  "look-through"  rule of Section 817, which would permit the
segregated  asset  accounts  to look  through  to the  underlying  assets of the
Series,  will be  available  for the  variable  contract  diversification  test.
Although  these  rulings may not be relied on as precedent by Guardian,  Mid-Cap
Growth,  or Socially  Responsive  series,  NB Management  believes the reasoning
thereof and, hence their conclusion applies to the those series.

     See the  next  section  for a  discussion  of the tax  consequences  to the
Portfolios of distributions  to them from the Series,  investments by the Series
in certain  securities,  and (except for AMT Liquid Asset  Investments)  hedging
transactions engaged in by the Series.

Taxation of Each Series

     Managers Trust has received a ruling from the Service,  except with respect
to AMT Guardian,  Mid-Cap  Growth and Socially  Responsive  Investments,  to the
effect  that,  among  other  things,  each  Series will be treated as a separate
partnership  for federal income tax purposes and will not be a "publicly  traded
partnership." As a result,  no Series is subject to federal income tax; instead,
each investor in a Series, such as a Portfolio, is required to take into account
in determining its federal income tax liability its share of the Series' income,
gains, losses, deductions, and credits, without regard


                                       79
<PAGE>


to whether it has  received  any cash  distributions  from the Series.  Although
these rulings may not be relied on as precedent by Guardian,  Mid-Cap Growth, or
Socially  Responsive  series, NB Management  believes the reasoning thereof and,
hence  their  conclusion  applies  to those  series.  A Series  also will not be
subject to Delaware or New York income or franchise tax.

     Because  each  Portfolio  is  deemed  to own a  proportionate  share of its
corresponding  Series' assets and income for purposes of determining whether the
Portfolio satisfies the requirements to qualify as a RIC, each Series intends to
conduct  its  operations  so that its  corresponding  Portfolio  will be able to
satisfy all those requirements.

     Distributions  to  a  Portfolio  from  its  corresponding  Series  (whether
pursuant to a partial or complete  withdrawal or  otherwise)  will not result in
the Portfolio's recognition of any gain or loss for federal income tax purposes,
except  that  (1)  gain  will be  recognized  to the  extent  any  cash  that is
distributed  exceeds the Portfolio's basis for its interest in the Series before
the  distribution,  (2) income or gain will be recognized if the distribution is
in liquidation of the  Portfolio's  entire interest in the Series and includes a
disproportionate  share of any unrealized  receivables  held by the Series,  (3)
loss will be recognized if a liquidation  distribution  consists  solely of cash
and/or unrealized  receivables and (4) gain (and, in certain  situations,  loss)
may be recognized on an in-kind  distribution by the  Portfolios.  A Portfolio's
basis for its  interest in its  corresponding  Series  generally  will equal the
amount  of cash and the  basis of any  property  the  Portfolio  invests  in the
Series, increased by the Portfolio's share of the Series' net income and capital
gains and  decreased by (a) the amount of cash and the basis of any property the
Series distributes to the Portfolio and (b) the Portfolio's share of the Series'
losses.

     Dividends,  interest, and in some cases, capital gains received by a Series
may be  subject  to  income,  withholding,  or other  taxes  imposed  by foreign
countries and U.S.  possessions  that would reduce the yield and/or total return
on its  securities.  Tax conventions  between  certain  countries and the United
States may reduce or eliminate  these foreign taxes,  however,  and many foreign
countries  do not impose  taxes on capital  gains in respect of  investments  by
foreign investors.

     The Equity  Series may invest in the stock of "passive  foreign  investment
companies"  ("PFICs").  A PFIC is a foreign corporation other than a "controlled
foreign  corporation"  (i.e., a foreign  corporation in which, on any day during
its taxable  year,  more than 50% of the total  voting power of all voting stock
therein or the total value of all stock therein is owned, directly,  indirectly,
or  constructively,  by  "U.S.  shareholders,"  defined  as  U.S.  persons  that
individually own, directly, indirectly, or constructively,  at least 10% of that
voting power) as to which a Series is a U.S.  shareholder  and that, in general,
meets  either of the  following  tests:  (1) at least 75% of its gross income is
passive;  or (2) an average of at least 50% of its assets  produce,  or are held
for the production of, passive income. Under certain circumstances,  if a Series
holds  stock of a PFIC,  its  corresponding  Portfolio  (indirectly  through its
interest  in the Series)  will be subject to federal  income tax on a portion of
any "excess  distribution"  received on the stock as well as gain on disposition
of the stock (collectively,  "PFIC income"),  plus interest thereon, even if the
Portfolio distributes the PFIC income as a taxable dividend to its shareholders.
The balance of the PFIC income  will be included in the  Portfolio's  investment
company taxable income and, accordingly, will not be taxable to it to the


                                       80
<PAGE>


extent that income is  distributed to its  shareholders  (assuming the Portfolio
qualifies as a regulated investment company).

     In general,  under the PFIC  rules,  an excess  distribution  is treated as
having been realized ratably over the period during which the Portfolio (through
its  corresponding  Series)  held the PFIC  shares.  A Portfolio  will itself be
subject to tax on the  portion,  if any,  of an excess  distribution  that is so
allocated to prior Portfolio  taxable years and an interest factor will be added
to the tax, as if the tax had been payable in such prior taxable years.  Certain
distributions  from a PFIC as well as gain  from  the  sale of PFIC  shares  are
treated as excess  distributions.  Excess  distributions  are  characterized  as
ordinary  income even  though,  absent  application  of the PFIC rules,  certain
excess distributions might have been classified as capital gain.

     If a Series  invests in a PFIC and elects to treat the PFIC as a  qualified
electing fund ("QEF"),  then in lieu of its corresponding  Portfolio's incurring
the foregoing tax and interest  obligation,  the Portfolio  would be required to
include in income  each year its pro rata share of the Series' pro rata share of
the QEF's  annual  ordinary  earnings  and net  capital  gain (the excess of net
long-term  capital gain over net  short-term  capital loss) -- which most likely
would  have to be  distributed  by the  Portfolio  to satisfy  the  Distribution
Requirement and avoid imposition of the excise tax -- even if those earnings and
gain were not received by the Series from the QEF. In most  instances it will be
very  difficult,  if not  impossible,  to make this election  because of certain
requirements thereof.

     A holder of stock in a PFIC  generally  may elect to  include  in  ordinary
income each  taxable  year the excess,  if any, of the fair market  value of the
stock  over its  adjusted  basis  as of the end of that  year.  Pursuant  to the
election, a deduction (as an ordinary,  not capital, loss) also would be allowed
for the excess,  if any, of the holder's  adjusted  basis in PFIC stock over the
fair market value thereof as of the taxable year-end,  but only to the extent of
any net  mark-to-market  gains with respect to that stock included in income for
prior  taxable  years.  The adjusted  basis in each PFIC's stock  subject to the
election  would be  adjusted  to  reflect  the  amounts of income  included  and
deductions  taken  thereunder  (and  under  regulations  proposed  in 1992  that
provided a similar  election  with respect to the stock of certain  PFICs).  Any
gain on the sale of PFIC stock  subject to a  mark-to-market  election  would be
treated as ordinary income.

     The use by the Series  (except  AMT Liquid  Asset  Investments)  of hedging
strategies,  such as writing  (selling)  and  purchasing  futures  contracts and
options and entering into forward  contracts,  involves  complex rules that will
determine  for  income  tax  purposes  the  amount,   character  and  timing  of
recognition of the gains and losses they realize in connection therewith.  Gains
from the  disposition of foreign  currencies  (except  certain gains that may be
excluded by future regulations), and gains from Hedging Instruments derived by a
Series  with  respect to its  business of  investing  in  securities  or foreign
currencies,  will qualify as permissible income for its corresponding  Portfolio
under the Income Requirement

     Exchange-traded  futures  contracts,  listed  options  thereon  and certain
forward contracts  constitute  "Section 1256 Contracts."  Section 1256 Contracts
are required to be  "marked-to-market"  (that is, treated as having been sold at
market  value) for federal  income tax purposes at the end of a 


                                       81
<PAGE>


Series'  taxable  year.  Sixty  percent of any net gain or loss  recognized as a
result of these "deemed sales" and 60% of any net realized gain or loss from any
actual sales of Section 1256 contracts are treated as long-term  capital gain or
loss, and the remainder is treated as short-term  capital gain or loss.  Section
1256  contracts  also may be  marked-to-market  for  purposes of the excise tax.
These rules may operate to increase the amount that a Portfolio must  distribute
to  satisfy  the  Distribution  Requirement,   which  will  be  taxable  to  the
shareholders as ordinary income, and to increase the net capital gain recognized
by the  Portfolio,  without in either case  increasing the cash available to the
Portfolio.  The Portfolio  may elect to exclude  certain  transactions  from the
operation of section 1256,  although  doing so may have the effect of increasing
the relative  proportion  of net  short-term  capital gain  (taxable as ordinary
income)  and/or  increasing  the amount of dividends that must be distributed to
meet the Distribution Requirement and avoid imposition of the excise tax.

     Transactions  in options,  futures and forward  contracts  undertaken  by a
Series may result in "straddles"  for federal income tax purposes.  The straddle
rules may affect the character of gains (or losses) realized by the Series,  and
losses  realized by the Series on  positions  that are part of a straddle may be
deferred  under the  straddle  rules,  rather than being  taken into  account in
calculating  the  taxable  income for the  taxable  year in which the losses are
realized.  In addition,  certain carrying charges  (including  interest expense)
associated with positions in a straddle may be required to be capitalized rather
than  deducted  currently.  Certain  elections  that each  Series  may make with
respect to its  straddle  positions  may also affect the amount,  character  and
timing of the recognition of gains or losses from the affected positions.

     Because only a few  regulations  implementing  the straddle rules have been
promulgated,  the  consequences  of such  transactions  to each  Series  are not
entirely clear. The straddle rules may increase the amount of short-term capital
gain realized by each Series (and its corresponding  Portfolio),  which is taxed
as ordinary income when distributed to shareholders.  Because application of the
straddle rules may affect the character of gains or losses,  defer losses and/or
accelerate  the  recognition  of gains or  losses  from  the  affected  straddle
positions,  the amount which must be  distributed  to  shareholders  as ordinary
income or long-term capital gain may be increased or decreased  substantially as
compared to a fund that did not engage in such transactions.

     Section 988 of the Code also may apply to forward  contracts and options on
foreign  currencies.  Under  section  988  each  foreign  currency  gain or loss
generally is computed  separately and treated as ordinary income or loss. In the
case of overlap between section 1256 and 988, special  provisions  determine the
character and timing of any income, gain or loss.

     When a covered call option written (sold) by a Series expires,  it realizes
a  short-term  capital  gain equal to the amount of the premium it received  for
writing the  option.  When a Series  terminates  its  obligations  under such an
option by entering into a closing transaction,  it realizes a short-term capital
gain (or loss), depending on whether the cost of the closing transaction is less
(or more) than the premium it received when it wrote the option.  When a covered
call option  written by a Series is  exercised,  the Series is treated as having
sold the underlying security,  producing long-term or short-


                                       82
<PAGE>


term capital gain or loss,  depending  on the holding  period of the  underlying
security and whether the sum of the option price  received on the exercise  plus
the premium  received when it wrote the option is more or less than the basis of
the underlying security.

     If a Series  has an  "appreciated  financial  position"  --  generally,  an
interest (including an interest through an option,  futures or forward contract,
or short sale) with respect to any stock,  debt instrument (other than "straight
debt"),  or  partnership  interest  the fair market  value of which  exceeds its
adjusted  basis  -- and  enters  into a  "constructive  sale"  of  the  same  or
substantially  similar  property,  the Series  will be treated as having made an
actual sale thereof,  with the result that gain will be recognized at that time.
A constructive sale generally  consists of a short sale, an offsetting  notional
principal  contract  (e.g., a swap contract),  or a futures or forward  contract
entered  into by a  Series  or a  related  person  with  respect  to the same or
substantially  similar  property.  In  addition,  if the  appreciated  financial
position  is  itself  a  short  sale  or  such a  contract,  acquisition  of the
underlying  property  or  substantially   similar  property  will  be  deemed  a
constructive  sale. The foregoing will not apply,  however,  to any  transaction
during any taxable year that otherwise  would be treated as a constructive  sale
if the  transaction  is closed within 30 days after the end of that year and the
Series holds the appreciated  financial position unhedged for 60 days after that
closing  (i.e.,  at no time during that 60-day period is the Series risk of loss
regarding that position reduced by reason of certain specified transactions with
respect to substantially  similar or related property,  such as having an option
to sell, being contractually obligated to sell, making a short sale, or granting
an option to buy substantially identical stock or securities).

     Gains or losses  attributable to fluctuations in exchange rates which occur
between  the time a  Series  accrues  income  or other  receivables  or  accrues
expenses or other liabilities denominated in a foreign currency and the time the
Series actually collects such receivables or pays such liabilities generally are
treated as ordinary income or ordinary loss.  Similarly,  on disposition of some
investments, including debt securities and certain forward contracts denominated
in a foreign currency, gains or losses attributable to fluctuations in the value
of the foreign  currency between the acquisition and disposition of the position
also are treated as ordinary gain or loss.  These gains and losses,  referred to
under the Code as "Section 988" gains or losses, increase or decrease the amount
of the Series'  investment company taxable income available to be distributed to
its  shareholders  as  ordinary  income.  If  Section  988 losses  exceed  other
investment company taxable income during a taxable year, the Series would not be
able to make any ordinary dividend  distributions,  or distributions made before
the losses  were  realized  would be  recharacterized  as a return of capital to
shareholders,  rather than as an ordinary dividend,  reducing each shareholder's
basis in his or her Series' shares.

     AMT  Limited  Maturity  Bond and  Liquid  Asset  Investments  may invest in
municipal  bonds that are purchased  with market  discount  (that is, at a price
less than the bond's  principal amount or, in the case of a bond that was issued
with OID, at a price less than the amount of the issue price plus  accrued  OID)
("municipal  market discount  bonds").  If a bond's market discount is less than
the  product  of (1) 0.25% of the  redemption  price at  maturity  times (2) the
number of complete years to maturity after the taxpayer  acquired the bond, then
no  market  discount  is  considered  to  exist.  Gain on


                                       83
<PAGE>


the  disposition  of a municipal  market  discount bond  purchased by the Series
(other  than a bond  with a  fixed  maturity  date  within  one  year  from  its
issuance),  generally  is treated as  ordinary  (taxable)  income,  rather  than
capital gain, to the extent of the bond's accrued market discount at the time of
disposition.  Market discount on such a bond generally is accrued ratably,  on a
daily basis,  over the period from the acquisition date to the date of maturity.
In lieu of treating the disposition  gain as described above, a Series may elect
to include market discount in its gross income currently,  for each taxable year
to which it is attributable.

     AMT  Partners,  Balanced,  and  Socially  Responsive  Investments  each may
acquire zero coupon or other securities  issued with OID. As the holder of those
securities, each Series (and, through it, its corresponding Portfolio) must take
into income the OID and other  non-cash  income that  accrues on the  securities
during the taxable year, even if no  corresponding  payment on the securities is
received  during the year.  Because  each  Portfolio  annually  must  distribute
substantially all of its investment  company taxable income (including its share
of  its   corresponding   Series'  accrued  OID)  to  satisfy  the  Distribution
Requirement  and avoid  imposition  of the excise  tax,  it may be required in a
particular  year to  distribute as a dividend an amount that is greater than its
share of the total amount of cash its  corresponding  Series actually  receives.
Those  distributions  will be made  from a  Portfolio's  (or  its  share  of its
corresponding  Series') cash assets or, if  necessary,  from the proceeds of the
Series'  sales of portfolio  securities.  A Series may realize  capital gains or
losses from those  sales,  which would  increase or decrease  its  corresponding
Series' investment company taxable income and/or net capital gain.

                             PORTFOLIO TRANSACTIONS

     Neuberger Berman acts as each Series' principal broker (except with respect
to AMT International Investments) to the extent a broker is used in the purchase
and sale of portfolio  securities  (other than certain  securities traded on the
OTC market) and in  connection  with the  purchase  and sale of options on their
securities.   Neuberger   Berman  may  act  as  broker  for  AMT   International
Investments. Neuberger Berman receives brokerage commissions for these services.
Transactions in portfolio securities for which Neuberger Berman serves as broker
will be effected in accordance with Rule 17e-1 under the 1940 Act.

     To the  extent a broker  is not  used,  purchases  and  sales of  portfolio
securities generally are transacted with the issuers,  underwriters,  or dealers
serving as primary  market-makers  acting as principals  for the securities on a
net basis.  The  Series  typically  do not pay  brokerage  commissions  for such
purchases and sales. Instead, the price paid for newly issued securities usually
includes a concession or discount paid by the issuer to the underwriter, and the
prices quoted by  market-makers  reflect a spread  between the bid and the asked
prices from which the dealer derives a profit.

     In purchasing and selling  portfolio  securities other than as described in
the preceding  paragraph (for example,  in the secondary  market),  each Series'
policy  is  to  seek  best  execution  at  the  most  favorable  prices  through
responsible  broker-dealers  and,  in  the  case  of  agency  transactions,   at
competitive   commission   rates.   In  selecting   broker-dealers   to  execute
transactions, NB Management considers such factors as the price of the security,
the rate of commission,  the size and difficulty of the


                                       84
<PAGE>


order, the reliability,  integrity,  financial condition,  and general execution
and operational capabilities of competing  broker-dealers,  and may consider the
brokerage  and research  services  they provide to the Series or NB  Management.
Some of these research services may be of value to NB Management in advising its
various  clients  (including the Series)  although not all of these services are
necessarily  used  by NB  Management  in  managing  the  Series.  Under  certain
conditions,  a  Series  may pay  higher  brokerage  commissions  in  return  for
brokerage and research services, although no Series has a current arrangement to
do so. In any case, each Series may effect principal  transactions with a dealer
who furnishes  research  services,  may designate any dealer to receive  selling
concessions,  discounts,  or other  allowances,  or may otherwise  deal with any
dealer in connection with the acquisition of securities in underwritings.

     During  the years  ended  December  31,  1998,  1997,  and 1996 AMT  Growth
Investments  paid total  brokerage  commissions  of  $906,984,  $1,297,021,  and
$761,814, respectively, of which $389,675, $541,724, and $483,502, respectively,
was paid to Neuberger  Berman.  Transactions  in which the Series used Neuberger
Berman as broker  comprised 44.2% of the aggregate dollar amount of transactions
involving  the  payment of  commissions,  and 43.0% of the  aggregate  brokerage
commissions  paid by it during the year ended  December 31,  1998.  99.9% of the
$517,309 paid to other brokers by the Series during the year ended  December 31,
1998   (representing   commissions  on  transactions   involving   approximately
$284,167,806)  was directed to those brokers  because of research  services they
provided. During the year ended December 31, 1998 the Series acquired securities
of the following of its regular  broker-dealers  ("B/Ds"):  Donaldson,  Lufkin &
Jenrette Securities Corp.; General Electric Capital Corp.; and State Street Bank
and Trust  Company;  at that date, the Series held the securities of its regular
B/Ds  with an  aggregate  value  as  follows:  $4,575,600,  Donaldson,  Lufkin &
Jenrette Securities Corp.; and $27,319,300, State Street Bank and Trust Co.

     During the years ended  December 31,  1998,  1997,  and 1996,  AMT Balanced
Investments  paid  total  brokerage  commissions  of  $162,566,   $229,076,  and
$143,948,  respectively,  of which $70,352, $94,867, and $99,363,  respectively,
was paid to Neuberger  Berman.  Transactions  in which the Series used Neuberger
Berman as broker  comprised 44.5% of the aggregate dollar amount of transactions
involving  the  payment of  commissions,  and 43.3% of the  aggregate  brokerage
commissions  paid by it during the year ended  December 31,  1998.  99.7% of the
$92,214 paid to other brokers by the Series  during the year ended  December 31,
1998   (representing   commissions  on  transactions   involving   approximately
$49,595,097  was directed to those  brokers  because of research  services  they
provided. During the year ended December 31, 1998 the Series acquired securities
of the following of its regular B/Ds:  Donaldson,  Lufkin & Jenrette  Securities
Corp.;  General Electric Capital Corp.;  Morgan Stanley,  Dean Witter & Co.; and
State  Street  Bank  and  Trust  Company;  at that  date,  the  Series  held the
securities  of its regular  B/Ds with an aggregate  value as follows:  $877,400,
Donaldson, Lufkin & Jenrette Securities Corp.; $1,510,958, Lehman Brothers Inc.;
$1,118,697, Morgan Stanley, Dean Witter & Co.; $1,303,384, Salomon Smith Barney;
$6,926,906, State Street Bank and Trust Company.

     During  the years  ended  December  31,  1998,  1997,  1996,  AMT  Partners
Investments  paid total  brokerage  commissions of $6,312,310,  $3,535,761,  and
$1,753,707,  respectively,  of which  $3,663,981,  $2,252,539,  and  $1,140,965,
respectively,  was paid to Neuberger  Berman.  Transactions  in


                                       85
<PAGE>


which  the  Series  used  Neuberger  Berman  as  broker  comprised  60.3% of the
aggregate  dollar amount of  transactions  involving the payment of commissions,
and 58.1% of the  aggregate  brokerage  commissions  paid by it during  the year
ended December 31, 1998.  89.0% of the  $2,648,329  paid to other brokers by the
Series  during the year ended  December 31, 1998  (representing  commissions  on
transactions  involving  approximately  $1,621,796,320  was  directed  to  those
brokers  because  of  research  services  they  provided.  During the year ended
December 31, 1998 the Series acquired securities of the following of its regular
B/Ds:  General  Electric Capital Corp.;  Morgan Stanley,  Dean Witter & Co.; and
State  Street  Bank  and  Trust  Company;  at that  date,  the  Series  held the
securities of its regular B/Ds with an aggregate value as follows:  $21,930,000,
State Street Bank and Trust Company.

     During  the years  ended  December  31,  1998 and 1997,  AMT Mid Cap Growth
Investments   paid  total   brokerage   commissions  of  $37,363,   and  $1,469,
respectively,  of which $18,697 and $1,364, respectively,  was paid to Neuberger
Berman.  Transactions  in which  the  Series  used  Neuberger  Berman  as broker
comprised  53.9% of the aggregate  dollar amount of  transactions  involving the
payment of commissions, and 50.0% of the aggregate brokerage commissions paid by
it during the year ended  December 31, 1998.  98.1% of the $18,666 paid to other
brokers by the Series  during the year ended  December  31,  1998  (representing
commissions on transactions involving approximately  $9,520,609) was directed to
those brokers because of research services they provided.  During the year ended
December 31, 1998 the Series acquired securities of its regular B/Ds. Donaldson,
Lufkin & Jenrette  Securities  Corp.;  General Electric Capital Corp.; and State
Street Bank and Trust  Company;  at that date, the Series held the securities of
its regular B/Ds with an aggregate value as follows: $250,100, Donaldson, Lufkin
&  Jenrette  Securities  Corp.;  and  $1,200,000,  State  Street  Bank and Trust
Company.

     During the year ended December 31, 1998 and 1997, AMT Guardian  Investments
paid total brokerage  commissions of $158,418 and $634,  respectively,  of which
$77,154 and $601,  respectively,  was paid to Neuberger Berman.  Transactions in
which  the  Series  used  Neuberger  Berman  as  broker  comprised  59.5% of the
aggregate  dollar amount of  transactions  involving the payment of commissions,
and 48.7% of the  aggregate  brokerage  commissions  paid by it during  the year
ended  December  31,  1998.  97.6% of the $81,264  paid to other  brokers by the
Series  during the year ended  December 31, 1998  (representing  commissions  on
transactions involving approximately  $51,497,946) was directed to those brokers
because of research  services they provided.  During the year ended December 31,
1998 the Series  acquired  securities  of the  following  of its  regular  B/Ds:
General  Electric  Capital Corp.;  Merrill Lynch,  Pierce,  Fenner & Smith Inc.;
Morgan Stanley,  Dean Witter & Co., and State Street Bank and Trust Company;  at
that date, the Series held the securities of its regular B/Ds: with an aggregate
value as follows:  $994,000,  Morgan Stanley, Dean Witter & Co.; and $2,940,000,
State Street Bank and Trust Co.

     During the year ended  December  31,  1998,  AMT Liquid  Asset  Investments
acquired  securities  of the  following of its regular  B/Ds:  General  Electric
Capital Corp.; Goldman, Sachs & Co.; Merrill Lynch, Pierce, Fenner & Smith Inc.;
Morgan  Stanley,  Dean Witter & Co., at that date, the Series held securities of
its regular  B/Ds with  aggregate  value as follows:  $597,779,  Merrill  Lynch,
Pierce, Fenner & Smith Inc.; and $297,035, General Electric Capital Corp.


                                       86
<PAGE>


     During  the year  ended  December  31,  1998,  AMT  Limited  Maturity  Bond
Investments  acquired  securities of the  following of its regular B/Ds:  Lehman
Brothers Inc.; Goldman, Sachs & Co.; Merrill Lynch, Pierce, Fenner & Smith Inc.;
Morgan Stanley,  Dean Witter & Co.; and Salomon Smith Barney Inc.; at that date,
the Series held  securities of its Regular B/Ds with aggregate value as follows:
$6,801,209,  Lehman  Brothers  Inc.;  $4,818,073,  Solomon  Smith  Barney  Inc.;
$4,776,755,  Merrill Lynch, Pierce, Fenner & Smith Inc.; and $4,336,299,  Morgan
Stanley, Dean Witter & Co.

     Insofar as portfolio  transactions of AMT Partners  Investments result from
active management of equity securities, and insofar as portfolio transactions of
AMT Growth  Investments and AMT Mid-Cap Growth  Investments  result from seeking
capital  appreciation by selling securities  whenever sales are deemed advisable
without  regard to the length of time the  securities may have been held, it may
be expected that the  aggregate  brokerage  commissions  paid by those Series to
brokers  (including  Neuberger  Berman  where it acts in that  capacity)  may be
greater than if securities were selected solely on a long-term basis.

     Portfolio securities are, from time to time, loaned by the Equity Series to
Neuberger  Berman in accordance with the terms and conditions of an order issued
by the SEC. The order exempts such  transactions from provisions of the 1940 Act
that would otherwise prohibit such transactions,  subject to certain conditions.
In  accordance  with the order,  securities  loans made by a Series to Neuberger
Berman are fully  secured by cash  collateral.  The portion of the income on the
cash collateral which may be shared with Neuberger Berman is to be determined by
reference to concurrent arrangements between Neuberger Berman and non-affiliated
lenders  with  which it  engages in similar  transactions.  In  addition,  where
Neuberger  Berman borrows  securities  from a Series in order to re-lend them to
others,  Neuberger  Berman may be  required to pay that  Series,  on a quarterly
basis,  certain of the earnings that Neuberger Berman otherwise has derived from
the  re-lending of the borrowed  securities.  When  Neuberger  Berman desires to
borrow a security that a Series has indicated a willingness  to lend,  Neuberger
Berman  must  borrow  such  security  from  that  Series,  rather  than  from  a
unaffiliated  lender,  unless  the  unaffiliated  lender is willing to lend such
security on more  favorable  terms (as specified in the order) than that Series.
If, in any month, a Series'  expense  exceed its income in any  securities  loan
transaction with Neuberger  Berman,  Neuberger Berman must reimburse that Series
for such loss.

     A committee of Independent Series Trustees from time to time reviews, among
other  things,  information  relating to  securities  loans by the  Series.  The
following  information  reflects  interest  income earned by the Series from the
cash  collateralization  of  securities  loans  during  the fiscal  years  ended
December 31, 1998, 1997, and 1996. As reflected below, Neuberger Berman received
a portion of the interest income from the cash collateral.


                                       87
<PAGE>


<TABLE>
<CAPTION>
                                                            Interest Income from
                                                            Collateralization of         Amount Paid to 
Name of Series                       Fiscal Year End          Securities Loans           Neuberger Berman
- --------------                       ---------------        --------------------         ----------------
<S>                                     <C>                     <C>                          <C>     
AMT Growth Investments                  12/31/98                $211,900                     $140,131
                                        12/31/97                $698,938                     $280,881
                                                                                            
- ---------------------------------------------------------------------------------------------------------
AMT Partners Investments                12/31/98                $254,699                     $ 61,019
                                        12/31/97                $270,744                     $ 75,760
                                                                                            
- ---------------------------------------------------------------------------------------------------------
AMT Guardian Investments                12/31/98                $    421                     $    -0-
                                                                                            
- ---------------------------------------------------------------------------------------------------------
AMT Mid-Cap Growth Investments          12/31/98                $    476                     $    354
- ---------------------------------------------------------------------------------------------------------
</TABLE>


     In effecting securities transactions, each Series generally seeks to obtain
the best price and execution of orders.  Commission rates,  being a component of
price,  are considered along with other relevant  factors.  Each Series plans to
continue to use  Neuberger  Berman as its broker  where,  in the  judgment of NB
Management,  that  firm is able to  obtain  a price  and  execution  at least as
favorable as other qualified  brokers.  To the Series'  knowledge,  however,  no
affiliate of any Series receives  give-ups or reciprocal  business in connection
with their securities transactions.

     The use of  Neuberger  Berman as a broker  for a Series is  subject  to the
requirements  of Section 11(a) of the Securities  Exchange Act of 1934 ("Section
11(a)").  Section 11(a) prohibits members of national securities  exchanges from
retaining  compensation  for executing  exchange  transactions for accounts that
they or their affiliates manage, except where they have the authorization of the
persons  authorized to transact business for the account and comply with certain
annual reporting requirements. The Board of Trustees of the Series has expressly
authorized Neuberger Berman to retain such compensation and Neuberger Berman has
agreed to comply with the reporting requirements of Section 11(a).


                                       88
<PAGE>


     Under the 1940 Act,  commissions  paid by a Series to  Neuberger  Berman in
connection  with a  purchase  or  sale of  securities  offered  on a  securities
exchange  may  not  exceed  the  usual  and   customary   broker's   commission.
Accordingly,  it is each  Series'  policy  that  the  commissions  to be paid to
Neuberger Berman must, in NB Management's  judgment be (1) at least as favorable
as those  that would be charged by other  brokers  having  comparable  execution
capability,  and (2) at  least as  favorable  as  commissions  contemporaneously
charged by  Neuberger  Berman on  comparable  transactions  for its most favored
unaffiliated customers, except for accounts for which Neuberger Berman acts as a
clearing  broker for another  brokerage  firm and customers of Neuberger  Berman
considered by a majority of the Independent Series Trustees not to be comparable
to the Series.  The Series do not deem it practicable and in their best interest
to  solicit  competitive  bids for  commissions  on each  transaction.  However,
consideration  regularly is given to information concerning the prevailing level
of  commissions  charged on  comparable  transactions  by other  brokers  during
comparable  periods of time. The 1940 Act generally  prohibits  Neuberger Berman
from acting as  principal in the  purchase or sale of  securities  for a Series'
account, unless an appropriate exemption is available.

     A committee of Independent Series Trustees from time to time reviews, among
other  things,  information  relating to the  commissions  charged by  Neuberger
Berman to the Series and to its other customers and  information  concerning the
prevailing  level of  commissions  charged by other  brokers  having  comparable
execution  capability.  In addition,  the procedures pursuant to which Neuberger
Berman  effects  brokerage  transactions  for the Series  must be  reviewed  and
approved no less often than  annually by a majority  of the  Independent  Series
Trustees.

     To ensure that accounts of all investment clients,  including a Series, are
treated  fairly  in  the  event  that  Neuberger  Berman  receives   transaction
instructions  regarding a security  for more than one  investment  account at or
about the same time,  Neuberger  Berman may combine  orders  placed on behalf of
clients,  including  advisory  accounts  in  which  affiliated  persons  have an
investment  interest,  for the purpose of negotiating  brokerage  commissions or
obtaining a more favorable price.  Where  appropriate,  securities  purchased or
sold may be  allocated,  in  terms  of  amount,  to a  client  according  to the
proportion  that the  size of the  order  placed  by that  account  bears to the
aggregate size of orders contemporaneously placed by the other accounts, subject
to de minimis  exceptions.  All  participating  accounts will pay or receive the
same price.

     Each  Series  expects  that it will  continue  to  execute a portion of its
transactions  through  brokers other than Neuberger  Berman.  In selecting those
brokers,  NB Management  will consider the quality and  reliability of brokerage
services,   including   execution   capability  and  performance  and  financial
responsibility,  and may consider the research and other investment  information
provided by those brokers, and the willingness of particular brokers to sell the
Variable Contracts issued by the Life Companies.

     A  committee,  comprised of officers of NB  Management  and  principals  of
Neuberger  Berman who are portfolio  managers of some of the Series and Other NB
Funds (collectively, "NB Funds") and some of Neuberger Berman's managed accounts
("Managed  Accounts")  evaluates  semi-annually  the nature  and  quality of the
brokerage  and  research  services  provided  by  other  brokers.  Based on this


                                       89
<PAGE>


evaluation, the committee establishes a list and projected rankings of preferred
brokers  for use in  determining  the  relative  amounts  of  commissions  to be
allocated to those  brokers.  Ordinarily  the brokers on the list effect a large
portion of the brokerage  transactions for the NB Funds and the Managed Accounts
that are not effected by Neuberger Berman.  However,  in any semi-annual period,
brokers  not on the list may be used,  and the  relative  amounts  of  brokerage
commissions  paid to the  brokers  on the list may vary  substantially  from the
projected  rankings.  These  variations  reflect the  following  factors,  among
others:  (1) brokers not on the list or ranking  below other brokers on the list
may be selected for  particular  transactions  because they provide better price
and/or execution,  which is the primary  consideration in allocating  brokerage;
and (2) adjustments may be required because of periodic changes in the execution
or research  capabilities of particular brokers, or in the execution or research
needs of the NB Funds and/or the Managed Accounts;  and (3) the aggregate amount
of  brokerage  commissions  generated by  transactions  for the NB Funds and the
Managed  Accounts may change  substantially  from one semi-annual  period to the
next.

     The commissions  paid to a broker other than Neuberger Berman may be higher
than the amount  another firm might charge if NB  Management  determines in good
faith that the amount of those  commissions  is  reasonable  in  relation to the
value  of the  brokerage  and  research  services  provided  by the  broker.  NB
Management  believes  that those  research  services  provide  the  Series  with
benefits by supplementing the information  otherwise available to NB Management.
That  research  information  may be used by NB  Management  in  servicing  their
respective  funds and, in some  cases,  by  Neuberger  Berman in  servicing  the
Managed  Accounts.  On the  other  hand,  research  information  received  by NB
Management from brokers effecting portfolio  transactions on behalf of the Other
NB Funds and by Neuberger Berman from brokers executing  portfolio  transactions
on behalf of the Managed Accounts may be used for the Series' benefit.

     The following  individuals are the persons primarily responsible for making
decisions  as to  specific  action to be taken with  respect  to the  investment
portfolios  of  the  indicated  Series:   Theodore  P.  Giuliano  and  Catherine
Waterworth - AMT Balanced (debt securities portion),  Limited Maturity Bond, and
Liquid Asset (with respect to Mr.  Giuliani);  Josephine Mahaney - Liquid Asset;
Kevin L. Risen and Allan R. White III - Guardian; Valerie Chang - International;
Jennifer  K.  Silver and Brooke A. Cobb - Growth,  Balanced  (equity  securities
portion) and Mid-Cap Growth;  Michael M. Kassen, Robert I. Gendelman and S. Basu
Mullick - Partners;  and Janet W. Prindle - Socially  Responsive.  Each of these
individuals is a Vice President of NB Management  (except for Ms. Chang,  who is
an Assistant Vice President) and a principal of Neuberger Berman (except for Ms.
Waterworth, Ms. Mahaney, Mr. Cobb, Ms. Chang, and Mr. Mullick). Each of them has
full authority to take action with respect to portfolio  transactions and may or
may not  consult  with other  personnel  of NB  Management  prior to taking such
action.  If Ms. Prindle is unavailable to perform her  responsibilities,  Robert
Ladd and/or Ingrid  Saukaitis,  each of whom is a Assistant Vice President of NB
Management,  will  assume  responsibility  for  the  portfolio  of AMT  Socially
Responsive Investments.


                                       90
<PAGE>

                               PORTFOLIO TURNOVER

     The  portfolio  turnover  rate is  calculated by dividing the lesser of the
cost of the securities purchased or the proceeds from the securities sold by the
Series during the fiscal year (other than securities, including options, foreign
financial futures contracts and forward contracts,  whose maturity or expiration
date at the time of acquisition was one year or less),  divided by the month-end
average monthly value of such securities owned by the Series during the year.

                             REPORTS TO SHAREHOLDERS

     Shareholders  of each Portfolio  receive  unaudited  semi-annual  financial
statements,  as well as year-end financial statements audited by the independent
auditors for the Portfolio and for its  corresponding  Series.  Each Portfolio's
report shows the investments  owned by its  corresponding  Series and the market
values  thereof and  provides  other  information  about the  Portfolio  and its
operations.   In  addition,   the  report  contains  the  Portfolio's  financial
statements,  including the Portfolio's  beneficial interest in its corresponding
Series.

                       INFORMATION REGARDING ORGANIZATION,
                        CAPITALIZATION, AND OTHER MATTERS

The Portfolios

     Each Portfolio is a separate series of the Trust, a Delaware business trust
organized  pursuant  to a Trust  Instrument  dated  May 23,  1994.  The Trust is
registered under the 1940 Act as a diversified,  open-end management  investment
company,  commonly  known  as  a  mutual  fund.  The  Trust  has  nine  separate
Portfolios.  Each  Portfolio  invests  all of its net  investable  assets in its
corresponding  Series,  in each case  receiving  a  beneficial  interest in that
Series. The trustees of the Trust may establish additional portfolios or classes
of shares,  without the approval of  shareholders.  The assets of each Portfolio
belong only to that  Portfolio,  and the liabilities of each Portfolio are borne
solely by that Portfolio and no other.

     NB  Management  and  Neuberger  Berman  serve  as  investment  manager  and
sub-advisor,  respectively,  to other mutual funds,  and the investments for the
Portfolios  (through  their  corresponding  series)  are  managed  by  the  same
portfolio  managers who manage one or more other mutual funds, that have similar
names,  investment  objectives and  investment  styles as each Portfolio and are
offered  directly to the public by means of separate  prospectuses.  These other
mutual  funds are not part of the Trust or Managers  Trust.  You should be aware
that each  Portfolio  is likely to differ from the other  mutual  funds in size,
cash flow  pattern,  and  certain  tax  matters,  and may differ in  risk/return
characteristics.  Accordingly,  the portfolio  holdings and  performance  of the
Portfolios may vary from those of the other mutual funds with similar names.

     Description  of Shares.  Each Portfolio is authorized to issue an unlimited
number of shares of beneficial interest (par value $0.001 per share).  Shares of
each Portfolio  represent  equal  proportionate  interests in the assets of that
Portfolio only and have identical voting, dividend, redemption, liquidation,


                                       91
<PAGE>


and other  rights.  All shares  issued are fully paid and  non-assessable  under
Delaware law, and shareholders have no preemptive or other right to subscribe to
any additional shares.

     Shareholder  Meetings.  The  trustees  of the  Trust do not  intend to hold
annual  meetings of  shareholders  of the  Portfolios.  The  trustees  will call
special  meetings of shareholders of a Portfolio only if required under the 1940
Act or in their discretion or upon the written request of holders of 10% or more
of the  outstanding  shares of that  Portfolio  entitled  to vote.  Pursuant  to
current  interpretations of the 1940 Act, the Life Companies will solicit voting
instructions  from Variable Contract owners with respect to any matters that are
presented to a vote of shareholders of that Portfolio.

     Certain  Provisions  of the  Trust  Instrument.  Under  Delaware  law,  the
shareholders of a Portfolio will not be personally liable for the obligations of
any  Portfolio;  a  shareholder  is entitled to the same  limitation of personal
liability  extended to shareholders of  corporations.  To guard against the risk
that  Delaware law might not be applied in other  states,  the Trust  Instrument
requires  that every written  obligation  of the Trust or a Portfolio  contain a
statement  that such  obligation  may be enforced only against the assets of the
Trust or Portfolio  and provides for  indemnification  out of Trust or Portfolio
property of any shareholder  nevertheless  held  personally  liable for Trust or
Portfolio obligations, respectively.

The Series

     Each Series is a separate  series of Managers  Trust, a New York common law
trust organized as of May 24, 1994.  Managers Trust is registered under the 1940
Act as a diversified, open-end management investment company. Managers Trust has
nine separate Series.  The assets of each Series belong only to that Series, and
the liabilities of each Series are borne solely by that Series and no other.

     Portfolios'  Investment  in the Series.  Each  Portfolio is a "feeder" fund
that seeks to achieve  its  investment  objective  by  investing  all of its net
investable assets in its corresponding  Series (a "master" fund) having the same
investment objective,  policies, and limitations as the Portfolio.  Accordingly,
each Series directly acquires its own securities and its corresponding Portfolio
acquires an indirect interest in those securities.

     Each Portfolio's investment in its corresponding Series is in the form of a
non-transferable  beneficial  interest.  Members of the  general  public may not
purchase a direct interest in the Series.  Currently, each Portfolio is the sole
investor in its corresponding Series. It is possible that one or more Series, in
the  future,  may  permit  other  institutional  investors,  including  but  not
necessarily   limited  to  the  managed  separate  accounts  of  life  insurance
companies,  to invest in the Series.  All investors will invest in the Series on
the same terms and  conditions as the  Portfolios  and will pay a  proportionate
share of the  expenses of the Series.  The  Portfolios  do not sell their shares
directly to members of the general  public.  Other investors in the Series would
not be required to sell their shares at the same offering  price as a Portfolio,
could have a different  administration  fee and expenses  than a Portfolio,  and
might charge a sales  commission.  Therefore,  Portfolio  shareholders  may have
different returns than  shareholders in another entity that invests  exclusively
in the Series.


                                       92
<PAGE>


     The trustees of the Trust and Managers  Trust believe that  investment in a
Series by other potential  investors may enable the Series to realize  economies
of scale that could reduce operating expenses,  thereby producing higher returns
and  benefiting  all  Shareholders.  However,  a  Portfolio's  investment in its
corresponding  Series may be affected by the actions of other large investors in
the Series,  if any. For example,  if a large  investor in a Series other than a
Portfolio redeemed its interest in the Series,  the Series' remaining  investors
(including  the  Portfolio)  might,  as a  result,  experience  higher  pro rata
operating expenses, thereby producing lower returns.

     Each Portfolio may withdraw its entire  investment  from its  corresponding
Series at any time,  if the  trustees of the Trust  determine  that it is in the
best interests of the Portfolio and its shareholders to do so. A Portfolio might
withdraw,  for example,  if there were other  investors in the Series with power
to, and who did by a vote of all investors (including the Portfolio), change the
investment  objective,  policies,  or  limitations of the Series in a manner not
acceptable  to the  trustees  of the  Trust.  A  withdrawal  could  result  in a
distribution  in kind of securities (as opposed to a cash  distribution)  by the
Series to the Portfolio.  That  distribution  could result in a less diversified
portfolio  of  investments  for the  Portfolio  and could affect  adversely  the
liquidity of the Portfolio's  investment  portfolio.  If a Portfolio  decided to
convert those securities to cash, it usually would incur brokerage fees or other
transaction  costs. If a Portfolio  withdrew its investment  from a Series,  the
trustees would consider what action might be taken,  including the investment of
all of the Portfolio's net investable assets in another pooled investment entity
having  substantially  the same  investment  objective  as the  Portfolio or the
retention by the Portfolio of its own investment manager to manage its assets in
accordance  with  its  investment  objective,  policies,  and  limitations.  The
inability  of  the  Portfolio  to  find  a  suitable  replacement  could  have a
significant impact on shareholders.

     Investor  Meetings and Voting.  Each Series normally will not hold meetings
of investors  except as required by the 1940 Act. Each investor in a Series will
be entitled to vote in  proportion  to its relative  beneficial  interest in the
Series. On most issues subjected to a vote of investors, as required by the 1940
Act and  other  applicable  law,  a  Portfolio  will  solicit  proxies  from its
shareholders and will vote its interest in the Series in proportion to the votes
cast by the Portfolio's shareholders. Pursuant to current interpretations of the
1940 Act, the Life Companies who are  shareholders of the Portfolio will solicit
voting  instructions  from contract  owners with respect to any matters that are
presented to a vote of Portfolio shareholders. If there are other investors in a
Series, there can be no assurance that any issue that receives a majority of the
votes cast by  Portfolio  shareholders  will receive a majority of votes cast by
all Series investors; indeed, if other investors hold a majority interest in the
Series, they could have voting control of the Series.

     Certain Provisions.  Each investor in a Series, including a Portfolio, will
be liable  for all  obligations  of the  Series,  but not of the  other  Series.
However, the risk of an investor in a Series incurring financial loss on account
of such  liability  would be  limited to  circumstances  in which the Series had
inadequate  insurance and was unable to meet its  obligations out of its assets.
Upon  liquidation of a Series,  investors would be entitled to share pro rata in
the net assets of the Series available for distribution to investors.

                          CUSTODIAN AND TRANSFER AGENT



                                       93
<PAGE>


     Each  Portfolio and Series has selected State Street Bank and Trust Company
("State Street"), 225 Franklin Street, Boston,  Massachusetts 02110 as custodian
for its  securities  and cash.  State  Street  also  serves as each  Portfolio's
Transfer Agent and  shareholder  servicing  agent,  administering  purchases and
redemptions Trust shares through its Boston Service Center.

                              INDEPENDENT AUDITORS

     Each  Portfolio  and Series has selected  Ernst & Young LLP, 200  Clarendon
Street,  Boston,  Massachusetts 02116 as the independent auditors who will audit
its financial statements.

                                  LEGAL COUNSEL

     Each  Portfolio and Series has selected  Dechert  Price & Rhoads,  1775 Eye
Street, N.W., Washington, D.C. 20006 as legal counsel.

                             REGISTRATION STATEMENT

     This SAI and Prospectus do not contain all the information  included in the
Trust's  registration  statement  filed  with  the SEC  under  the 1933 Act with
respect to the securities  offered by the  Prospectus.  Certain  portions of the
registration  statement have been omitted pursuant to SEC rules and regulations.
The  registration  statement,  including the exhibits  filed  therewith,  may be
examined at the SEC's  offices in  Washington,  D.C. The SEC maintains a Website
(http://www.sec.gov)  that contains this SAI, material incorporated by reference
and other information regarding the Series and the Portfolios.

     Statements  contained in this SAI and  Prospectus as to the contents of any
contract or other document referred to are not necessarily complete, and in each
instance  reference is made to the copy of the contract or other  document filed
as an exhibit to the registration statement, each such statement being qualified
in all respects by such reference.

                              FINANCIAL STATEMENTS

     The  audited   financial   statements,   notes  to  the  audited  financial
statements,  and reports of the  independent  auditors  contained  in the annual
reports to the  shareholders of the Trust for the fiscal year ended December 31,
1998 for Neuberger Berman Advisers Management Trust (with respect to each of the
Balanced  Portfolio,  Mid-Cap  Growth  Portfolio,   Guardian  Portfolio,  Growth
Portfolio,  Limited Maturity Bond Portfolio, Liquid Asset Portfolio and Partners
Portfolio),  and for Advisers  Managers  Trust (with  respect to each of the AMT
Balanced Investments,  AMT Mid-Cap Growth Investments, AMT Guardian Investments,
AMT Growth  Investments,  AMT  Mid-Cap  Growth  Investments,  AMT  Liquid  Asset
Investments and AMT Partners  Investments) are incorporated  into this Statement
of  Additional  Information  by reference to each  Portfolio's  Annual Report to
shareholders for the fiscal year ended December 31, 1998.




                                       94
<PAGE>



           APPENDIX A: RATINGS OF CORPORATE BONDS AND COMMERCIAL PAPER

S&P corporate bond ratings

     AAA - Bonds rated AAA have the highest rating assigned by S&P.  Capacity to
pay interest and repay principal is extremely strong.

     AA - Bonds rated AA have a very strong  capacity to pay  interest and repay
principal and differ from the higher rated issues only in small degree.

     A -  Bonds  rated  A have a  strong  capacity  to pay  interest  and  repay
principal, although they are somewhat more susceptible to the adverse effects of
changes in  circumstances  and  economic  conditions  than bonds in higher rated
categories.

     BBB - Bonds rated BBB are  regarded  as having an adequate  capacity to pay
principal  and  interest.  Whereas they  normally  exhibit  adequate  protection
parameters,  adverse  economic  conditions  or changing  circumstances  are more
likely to lead to a weakened capacity to pay principal and interest for bonds in
this category than for bonds in higher rated categories.

     BB, B, CCC,  CC, C - Bonds  rated BB, B, CCC,  CC, and C are  regarded,  on
balance,  as predominantly  speculative with respect to capacity to pay interest
and repay principal in accordance with the terms of the obligation. BB indicates
the lowest degree of speculation and C the highest degree of speculation.  While
such bonds will likely have some quality and protective  characteristics,  these
are  outweighed  by large  uncertainties  or major  risk  exposures  to  adverse
conditions.

     CI - The rating CI is  reserved  for income  bonds on which no  interest is
being paid.

     D - Bonds rated D are in default,  and payment of interest and/or repayment
of principal is in arrears.

     Plus (+) or Minus (-) - The ratings  above may be modified by the  addition
of a plus or minus sign to show relative standing within the major categories.

Moody's corporate bond ratings

     Aaa - Bonds rated Aaa are judged to be of the best quality.  They carry the
smallest degree of investment risk and are generally referred to as "gilt edge."
Interest  payments are protected by a large or an  exceptionally  stable margin,
and principal is secure.  Although the various protective elements are likely to
change,  the  changes  that can be  visualized  are most  unlikely to impair the
fundamentally strong position of the issuer.

     Aa - Bonds  rated Aa are  judged to be of high  quality  by all  standards.
Together with the Aaa group,  they  comprise  what are generally  known as "high
grade  bonds."  They are rated  lower  than the best  bonds  because  margins of
protection  may not be as  large  as in  Aaa-rated  securities,  fluctuation  of


                                      A-1
<PAGE>


protective elements may be of greater amplitude,  or there may be other elements
present that make the long-term  risks appear  somewhat larger than in Aaa-rated
securities.

     A - Bonds rated A possess many favorable  investment  attributes and are to
be  considered as upper medium grade  obligations.  Factors  giving  security to
principal and interest are considered adequate, but elements may be present that
suggest a susceptibility to impairment sometime in the future.

     Baa - Bonds which are rated Baa are considered as medium grade obligations;
i.e., they are neither highly  protected nor poorly secured.  Interest  payments
and principal  security appear  adequate for the present but certain  protective
elements may be lacking or may be  characteristically  unreliable over any great
length of time. These bonds lack outstanding  investment  characteristics and in
fact have speculative characteristics as well.

     Ba - Bonds rated Ba are judged to have speculative  elements;  their future
cannot be  considered  as well  assured.  Often the  protection  of interest and
principal  payments may be very moderate and thereby not well safeguarded during
both good and bad times over the future.  Uncertainty of position  characterizes
bonds in this class.

     B  -  Bonds  rated  B  generally  lack  characteristics  of  the  desirable
investment.  Assurance of interest and principal  payments or of  maintenance of
other terms of the contract over any long period time may be small.

     Caa - Bonds rated Caa are of poor  standing.  Such issues may be in default
or there may be  present  elements  of  danger  with  respect  to  principal  or
interest.

     Ca - Bonds rated Ca represent  obligations  that are  speculative in a high
degree. Such issues are often in default or have other marked shortcomings.

     C - Bonds rated C are the lowest rated class of bonds,  and issues so rated
can be regarded as having  extremely  poor  prospects of ever attaining any real
investment standing.

     Modifiers  - Moody's  may  apply  numerical  modifiers  1, 2, and 3 in each
generic rating classification described above. The modifier 1 indicates that the
security ranks in the higher end of its generic rating category;  the modifier 2
indicates  a mid-range  ranking;  and the  modifier 3 indicates  that the issuer
ranks in the lower end of its generic rating category.


                                      A-2
<PAGE>


S&P commercial paper ratings

     A-1 - This highest  category  indicates that the degree of safety regarding
timely payment is strong.  Those issues  determined to possess  extremely strong
safety characteristics are denoted with a plus sign (+).

Moody's commercial paper ratings

     Issuers rated Prime-1 (or related supporting  institutions),  also known as
P-1,  have  a  superior   capacity  for   repayment  of  short-term   promissory
obligations.  Prime-1  repayment  capacity  will  normally be  evidenced  by the
following characteristics:

     -Leading market positions in well-established industries;

     -High rates of return on funds employed;

     -Conservative  capitalization structures with moderate reliance on debt and
     ample asset protection;

     -Broad  margins in earnings  coverage of fixed  financial  charges and high
     internal cash generation; and

     -Well-established  access  to a range  of  financial  markets  and  assured
     sources of alternate liquidity.



                                      A-3
<PAGE>


                                   APPENDIX B

                   NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST

                      TOTAL RETURN ANALYSIS USING CONSTANT
                        ASSET ALLOCATION S&P "500"/2 YR.
                               U.S. TREASURY NOTES

                                   1960 - 1998


FIXED ASSET ALLOCATION                                        COMPARISON TO 100%
S&P "500"/2 YR. TREASURY NOTES                              S&P "500" ALLOCATION
- --------------------------------------------------------------------------------

100/0 (100% S&P "500")
   Return                              12.03%                       100.0%
   Volatility                           15.7%                       100.0%
70/30
   Return                              10.72%                       89.08%
   Volatility                           11.3%                        72.0%
60/40
   Return                              10.24%                       85.09%
   Volatility                            9.9%                        63.0%
50/50
   Return                               9.74%                       80.93%
   Volatility                            8.5%                        54.2%
0/100
   Return                               6.93%                       57.58%
   Volatility                            4.0%                        25.6%





                                       B-1
<PAGE>




                   NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST
                  POST-EFFECTIVE AMENDMENT NO. 30 ON FORM N-1A

                                     PART C

                                OTHER INFORMATION

Item 23. Exhibits


     Exhibit Number              Description
     --------------              -----------

       (a)(1)       Trust Instrument of Registrant.(1)

          (2)       Amended   and   Restated   Certificate   of   Trust  of  the
                    Registrant.(8)

          (3)       Amendment to Trust Instrument dated November 9, 1998.(8)

          (4)       Schedule A to Trust  Instrument  of  Registrant  designating
                    Series of Registrant.(7)

       (b)(1)      By-laws of Registrant.(1)

          (2)       Amendment to By-laws dated November 11, 1997.(5)

          (3)       Amendment to By-laws dated November 9, 1998.(8)

       (c)(1)       Trust Instrument of Registrant, Articles IV, V and VI.1

          (2)       By-laws of Registrant, Articles V, VI and VIII.1

       (d)(1)       Management  Agreement  Between  Advisers  Managers Trust and
                    Neuberger Berman Management Incorporated.(1)

          (2)       Sub-Advisory  Agreement  Between Neuberger Berman Management
                    Incorporated  and  Neuberger  Berman,  LLC with  Respect  to
                    Advisers Managers Trust.(1)

          (3)       Substitution  Agreement  among Neuberger  Berman  Management
                    Inc.,  Advisers Managers Trust,  Neuberger Berman,  L.P. and
                    Neuberger Berman, LLC.(1)

          (4)       Schedule  designating  series  of  Advisers  Managers  Trust
                    subject to the Management Agreement.(7)


                                      -1-
<PAGE>


     Exhibit Number              Description
     --------------              -----------

          (5)       Schedule  designating  series  of  Advisers  Managers  Trust
                    subject to the Sub-Advisory Agreement.(7)

       (e)(1)       Distribution  Agreement  Between  Registrant  and  Neuberger
                    Berman Management Incorporated.(1)

          (2)       Schedule  designating  series of  Registrant  subject to the
                    Distribution Agreement.(7)

       (f)          Bonus or Profit Sharing Contracts. None.

       (g)(1)       Custodian  Contract Between Registrant and State Street Bank
                    and Trust Company.(2)

          (2)       Letter  Agreement  adding  the  International  Portfolio  of
                    Registrant to the Custodian Contract.(1)

          (3)       Schedule A to the Custodian  Contract  designating  approved
                    foreign banking  institutions  and securities  depositories.
                    (filed herewith).

          (4)       Custodian Fee Schedule.(3)

          (5)       Letter  Agreement  adding the  Mid-Cap  Growth and  Guardian
                    Portfolios  of  Registrant  to the  Custodian  Contract  and
                    Transfer Agency Agreement.(4)

          (6)       Schedule   designating   Series  of  Registrant  subject  to
                    Custodian Contract.(7)

          (7)       Letter Agreement adding the Socially Responsive Portfolio of
                    Registrant  to the  Custodian  Contract and Transfer  Agency
                    Agreement.7(7)

       (h)(1)       Transfer  Agency  Agreement  Between  Registrant  and  State
                    Street Bank and Trust Company.(2)

          (2)       Administration  Agreement  Between  Registrant and Neuberger
                    Berman Management Incorporated.(1)

          (3)       Form of Fund Participation Agreement.(1)

          (4)       Letter  Agreement  adding  the  International  Portfolio  of
                    Registrant to


                                      -2-
<PAGE>


     Exhibit Number              Description
     --------------              -----------

                    the Transfer Agency Agreement.(1)

          (5)       Reimbursement Agreement between Registrant, on behalf of the
                    International  Portfolio,  and Neuberger  Berman  Management
                    Inc.(1)

          (6)       Letter  Agreement  adding the  Mid-Cap  Growth and  Guardian
                    Portfolios   of   Registrant   to   the   Transfer    Agency
                    Agreement.(4)

          (7)       Schedule  designating  Series of  Registrant  subject to the
                    Administration Agreement.(7)

          (8)       Reimbursement Agreement between Registrant, on behalf of the
                    Mid-Cap Growth and Guardian Portfolios, and Neuberger Berman
                    Management Inc.(4)

          (9)       Schedule  designating  series of  Registrant  subject to the
                    Transfer Agency Agreement.(7)

          (10)      Reimbursement Agreement between Registrant, on behalf of the
                    Socially   Responsive   Portfolio,   and  Neuberger   Berman
                    Management, Inc.(6)

          (11)      Letter Agreement adding the Socially Responsive Portfolio of
                    Registrant to the Transfer Agency Agreement.(7)

       (i)          Legal Opinion. (filed herewith).

       (j)(1)       Consent of Independent Auditors. (filed herewith).

          (2)       Powers of Attorney.(3)

       (k)          Financial Statements Omitted from Prospectus. None.
                    
       (l)          Initial Capital Agreements. None.
                    
       (m)(1)       Plan Pursuant to Rule 12b-1.(1)
                 
          (2)       Schedule  designating  Series of  Registrant  subject to the
                    Rule 12b-1 Plan.(7)

       (n)          Financial Data Schedules. (filed herewith).


                                      -3-
<PAGE>


     Exhibit Number              Description
     --------------              -----------

       (o)          Rule 18f-3 Plan. None.
               
- ----------

1.   Incorporated   by  reference  to   Post-Effective   Amendment   No.  22  to
     Registrant's  Registration Statement, File Nos. 2-88566 and 811-4255, EDGAR
     Accession No. 0000943663-97-000091.

2.   Incorporated   by  reference  to   Post-Effective   Amendment   No.  20  to
     Registrant's  Registration Statement, File Nos. 2-88566 and 811-4255, EDGAR
     Accession No. 0000943663-96-000107.

3.   Incorporated   by  reference  to   Post-Effective   Amendment   No.  23  to
     Registrant's  Registration Statement, File Nos. 2-88566 and 811-4255, EDGAR
     Accession No. 0000943663-97-000094.

4.   Incorporated   by  reference  to   Post-Effective   Amendment   No.  25  to
     Registrant's  Registration Statement, File Nos. 2-88566 and 811-4255, EDGAR
     Accession No. 0000943663-97-000256.

5.   Incorporated   by  reference  to   Post-Effective   Amendment   No.  26  to
     Registrant's  Registration Statement, File Nos. 2-88566 and 811-4255, EDGAR
     Accession No. 0000943663-98-000094.

6.   Incorporated   by  reference  to   Post-Effective   Amendment   No.  27  to
     Registrant's  Registration Statement, File Nos. 2-88566 and 811-4255, EDGAR
     Accession No. 0000943663-98-000180.

7.   Incorporated   by  reference  to   Post-Effective   Amendment   No.  28  to
     Registrant's  Registration Statement, File Nos. 2-88566 and 811-4255, EDGAR
     Accession No. 0000943663-98-000266.

8.   Incorporated   by  reference  to   Post-Effective   Amendment   No.  29  to
     Registrant's  Registration Statement, File Nos. 2-88566 and 811-4255, EDGAR
     Accession No. 0000943663-99-000074.

Item 24. Persons Controlled By or Under Common Control with Registrant

     No person is  controlled  by or under common  control  with the  Registrant
(Registrant is organized in a master/feeder fund structure,  and technically may
be considered to control the master fund in which it invests,  Advisers Managers
Trust.)


                                      -4-
<PAGE>


Item 25. Indemnification

     A Delaware  business  trust may  provide in its  governing  instrument  for
indemnification of its officers and trustees from and against any and all claims
and demands  whatsoever.  Article IX, Section 2 of the Trust Instrument provides
that the  Registrant  shall  indemnify any present or former  trustee,  officer,
employee or agent of the  Registrant  ("Covered  Person") to the fullest  extent
permitted by law against liability and all expenses  reasonably incurred or paid
by him in connection with any claim,  action,  suit or proceeding  ("Action") in
which he  becomes  involved  as a party or  otherwise  by virtue of his being or
having  been a Covered  Person and  against  amounts  paid or incurred by him in
settlement thereof. Indemnification will not be provided to a person adjudged by
a court or other  body to be liable to the  Registrant  or its  shareholders  by
reason  of  "willful  misfeasance,  bad  faith,  gross  negligence  or  reckless
disregard  of the duties  involved  in the  conduct of his  office"  ("Disabling
Conduct"),  or not to have acted in good faith in the reasonable belief that his
action was in the best interest of the Registrant. In the event of a settlement,
no  indemnification  may be provided unless there has been a determination  that
the officer or trustee did not engage in  Disabling  Conduct (i) by the court or
other  body  approving  the  settlement;  (ii) by at least a  majority  of those
trustees  who are  neither  interested  persons,  as that term is defined in the
Investment Company Act of 1940, of the Registrant ("Independent Trustees"),  nor
are parties to the matter  based upon a review of readily  available  facts;  or
(iii) by written  opinion of  independent  legal  counsel based upon a review of
readily available facts.

     Pursuant to Article IX, Section 3 of the Trust  Instrument,  if any present
or former  shareholder of any series  ("Series") of the Registrant shall be held
personally liable solely by reason of his being or having been a shareholder and
not because of his acts or  omissions or for some other  reason,  the present or
former  shareholder  (or his heirs,  executors,  administrators  or other  legal
representatives  or in the case of any entity,  its general  successor) shall be
entitled  out of the  assets  belonging  to the  applicable  Series  to be  held
harmless  from and  indemnified  against all loss and expense  arising from such
liability. The Registrant, on behalf of the affected Series, shall, upon request
by  such  shareholder,  assume  the  defense  of any  claim  made  against  such
shareholder  for any act or  obligation  of the Series and satisfy any  judgment
thereon from the assets of the Series.

     Section 9 of the Management  Agreement  between Advisers Managers Trust and
Neuberger Berman Management Incorporated ("NB Management") provides that neither
NB Management nor any director,  officer or employee of NB Management performing
services for any Series of Advisers  Managers Trust (each a "Portfolio")  at the
direction  or  request  of NB  Management  in  connection  with NB  Management's
discharge of its  obligations  under the Agreement shall be liable for any error
of judgment or mistake of law or for any loss suffered by a Series in connection
with any matter to which the Agreement  relates;  provided,  that nothing in the
Agreement shall be construed (i) to protect NB Management  against any liability
to  Advisers  Managers  Trust  or a Series  of  Advisers  Managers  Trust or its
interest  holders to which NB Management would otherwise be subject by reason of
willful  misfeasance,  bad faith,  or gross  negligence in the performance of NB
Management's  duties, or by reason of NB Management's


                                      -5-
<PAGE>


reckless disregard of its obligations and duties under the Agreement, or (ii) to
protect  any  director,  officer or employee  of NB  Management  who is or was a
Trustee or officer of Advisers  Managers Trust against any liability to Advisers
Managers  Trust or a Series or its  interest  holders to which such person would
otherwise  be  subject  by reason  of  willful  misfeasance,  bad  faith,  gross
negligence or reckless  disregard of the duties  involved in the conduct of such
person's office with Advisers Managers Trust.

     Section 1 of the Sub-Advisory Agreement between Advisers Managers Trust and
Neuberger Berman,  LLC  ("Sub-Adviser")  provides that in the absence of willful
misfeasance,  bad faith or gross negligence in the performance of its duties, or
of reckless  disregard of its duties and  obligations  under the Agreement,  the
Sub-Adviser will not be subject to liability for any act or omission or any loss
suffered by any Series of Advisers  Managers  Trust or its  interest  holders in
connection with the matters to which the Agreement relates.

     Section 9.1 of the  Administration  Agreement between the Registrant and NB
Management  provides that NB Management will not be liable to the Registrant for
any action taken or omitted to be taken by NB  Management in good faith and with
due care in accordance with such instructions, or with the advice or opinion, of
legal counsel for a Portfolio of the Trust or for the  Administrator  in respect
of any matter  arising  in  connection  with the  Administration  Agreement.  NB
Management  shall be protected in acting upon any such  instructions,  advice or
opinion and upon any other paper or document  delivered  by a Portfolio  or such
legal counsel which NB Management believes to be genuine and to have been signed
by the proper  person or persons,  and NB  Management  shall not be held to have
notice of any change of status or authority of any officer or  representative of
the Trust,  until receipt of written notice thereof from the Portfolio.  Section
12  of  the  Administration  Agreement  provides  that  each  Portfolio  of  the
Registrant  shall  indemnify NB Management and hold it harmless from and against
any and all losses,  damages and expenses,  including reasonable attorneys' fees
and expenses, incurred by NB Management that result from: (i) any claim, action,
suit or proceeding in connection with NB Management's  entry into or performance
of the  Agreement  with respect to such  Portfolio;  or (ii) any action taken or
omission to act committed by NB Management in the performance of its obligations
under the Agreement  with respect to such  Portfolio;  or (iii) any action of NB
Management upon instructions  believed in good faith by it to have been executed
by a duly authorized officer or representative of the Trust with respect to such
Portfolio;   provided,   that  NB  Management  will  not  be  entitled  to  such
indemnification  in respect of actions or omissions  constituting  negligence or
misconduct  on  the  part  of  NB  Management,  or  its  employees,   agents  or
contractors.  Amounts  payable by the Registrant  under this provision  shall be
payable solely out of assets  belonging to that  Portfolio,  and not from assets
belonging  to  any  other  Portfolio  of  the  Registrant.  Section  13  of  the
Administration  Agreement  provides  that  NB  Management  will  indemnify  each
Portfolio of the  Registrant  and hold it harmless  from and against any and all
losses, damages and expenses, including reasonable attorneys' fees and expenses,
incurred  by  such  Portfolio  of  the  Registrant  that  result  from:  (i)  NB
Management's  failure  to  comply  with the terms of the  Agreement;  or (ii) NB
Management's  lack of  good  faith  in  performing  its  obligations


                                      -6-
<PAGE>


under the Agreement; or (iii) the negligence or misconduct of NB Management,  or
its  employees,  agents or  contractors  in  connection  with the  Agreement.  A
Portfolio of the  Registrant  shall not be entitled to such  indemnification  in
respect of actions or omissions  constituting  negligence  or  misconduct on the
part of that  Portfolio or its employees,  agents or  contractors  other than NB
Management,  unless such negligence or misconduct results from or is accompanied
by negligence or misconduct on the part of NB Management,  any affiliated person
of NB  Management,  or any  affiliated  person  of an  affiliated  person  of NB
Management.

     Section 11 of the  Distribution  Agreement  between the  Registrant  and NB
Management  provides  that NB  Management  shall  look  only to the  assets of a
Portfolio for the Registrant's performance of the Agreement by the Registrant on
behalf of such Portfolio,  and neither the Trustees nor any of the  Registrant's
officers,  employees  or agents,  whether  past,  present  or  future,  shall be
personally liable therefor.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 ("1933  Act") 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 expenses  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,  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 1933 Act and will be governed by the final adjudication of such
issue.

Item 26. Business and Other Connections of Adviser and Sub-Adviser

     There is set forth below information as to any other business,  profession,
vocation or employment of a substantial nature in which each director or officer
of NB Management and each principal of the Sub-Adviser is, or at any time during
the past two  years  has  been,  engaged  for his or her own  account  or in the
capacity of director, officer, employee, partner or trustee.

NAME                                         BUSINESS AND OTHER CONNECTIONS

Claudia A. Brandon                           Secretary,     Neuberger     Berman
Director, Corporate Secretarial,             Advisers      Management     Trust;
Neuberger Berman, LLC;                       Secretary, Advisers Managers Trust;
Vice President, NB Management(1)             Secretary,  Neuberger Berman Income
                                             Funds; Secretary,  Neuberger Berman
                                             Income Trust; Secretary,  Neuberger
                                             Berman  Equity  Funds;   Secretary,
                                             Neuberger   Berman   Equity  Trust;
                                             Secretary,  Income  Managers Trust;
                                             Secretary,  


                                       -7-
<PAGE>


NAME                                         BUSINESS AND OTHER CONNECTIONS

                                             Equity Managers  Trust;  Secretary,
                                             Global Managers  Trust;  Secretary,
                                             Neuberger   Berman  Equity  Assets;
                                             Secretary,  Neuberger Berman Equity
                                             Series.
                                             

Brooke A. Cobb                               Chief  Investment  Officer,  Bainco
Vice President, NB Management                International   Investors;   Senior
                                             Vice    President   and   Portfolio
                                             Manager,   Putnam  Investments.(2)

Stacy Cooper-Shugrue                         Assistant   Secretary,    Neuberger
Assistant Director, Corporate                Berman Advisers  Management  Trust;
Secretarial, Neuberger                       Assistant    Secretary,    Advisers
Berman, LLC;                                 Managers      Trust;      Assistant
Assistant Vice President, NB Management(1)   Secretary,  Neuberger Berman Income
                                             Funds;     Assistant     Secretary,
                                             Neuberger   Berman   Income  Trust;
                                             Assistant   Secretary,    Neuberger
                                             Berman  Equity   Funds;   Assistant
                                             Secretary,  Neuberger Berman Equity
                                             Trust; Assistant Secretary,  Income
                                             Managers      Trust;      Assistant
                                             Secretary,  Equity  Managers Trust;
                                             Assistant     Secretary,     Global
                                             Managers      Trust;      Assistant
                                             Secretary,  Neuberger Berman Equity
                                             Assets;     Assistant     Secretary
                                             Neuberger Berman Equity Series.    
                                             
Barbara DiGiorgio                            Assistant   Treasurer,    Neuberger
Assistant Vice President, NB                 Berman Advisers  Management  Trust;
Management                                   Assistant    Treasurer,    Advisers
                                             Managers      Trust;      Assistant
                                             Treasurer,  Neuberger Berman Income
                                             Funds;     Assistant     Treasurer,
                                             Neuberger   Berman   Income  Trust;
                                             Assistant   Treasurer,    Neuberger
                                             Berman  Equity   Funds;   Assistant
                                             Treasurer,  Neuberger Berman Equity
                                             Trust; Assistant Treasurer,  Income
                                             Managers      Trust;      Assistant
                                             Treasurer,  Equity  Managers Trust;
                                             Assistant     Treasurer,     Global
                                             Managers      Trust;      Assistant
                                             Treasurer,  Neuberger Berman Equity
                                             Assets;     Assistant    Treasurer,
                                             Neuberger Berman Equity Series.    
                                             
Stanley Egener                               Chairman of the Board and  Trustee,
President and Director, NB                   Neuberger      Berman      Advisers
Management; Principal, Neuberger             Management  Trust;  Chairman of the
Berman, LLC                                  Board   and    Trustee,    Advisers
                                             Managers  Trust;  Chairman  of  the
                                             Board and Trustee, Neuberger Berman
                                             Income Funds; Chairman of the Board
                                             and   


                                       -8-
<PAGE>


NAME                                         BUSINESS AND OTHER CONNECTIONS

                                             Trustee,  Neuberger  Berman  Income
                                             Trust;  Chairman  of the  Board and
                                             Trustee,  Neuberger  Berman  Equity
                                             Funds;  Chairman  of the  Board and
                                             Trustee,  Neuberger  Berman  Equity
                                             Trust;  Chairman  of the  Board and
                                             Trustee,   Income  Managers  Trust;
                                             Chairman of the Board and  Trustee,
                                             Equity Managers Trust;  Chairman of
                                             the  Board  and   Trustee,   Global
                                             Managers  Trust;  Chairman  of  the
                                             Board and Trustee, Neuberger Berman
                                             Equity  Assets;   Chairman  of  the
                                             Board and Trustee  Neuberger Berman
                                             Equity Series.
                                           
Theodore P. Giuliano                         President  and  Trustee,  Neuberger
Vice President and Director, NB Management;  Berman Income Funds;  President and
Principal, Neuberger Berman, LLC             Trustee,  Neuberger  Berman  Income
                                             Trust;   President   and   Trustee,
                                             Income  Managers  Trust.           

S. Basu Mullick                              Portfolio   Manager,   Ark  Asset
Vice President, NB Management                Management.(3)                   
                                             
C. Carl Randolph                             Assistant   Secretary,    Neuberger
Principal, Neuberger Berman, LLC             Berman Advisers  Management  Trust;
                                             Assistant    Secretary,    Advisers
                                             Managers      Trust;      Assistant
                                             Secretary,  Neuberger Berman Income
                                             Funds;     Assistant     Secretary,
                                             Neuberger   Berman   Income  Trust;
                                             Assistant    Secretary    Neuberger
                                             Berman  Equity   Funds;   Assistant
                                             Secretary,  Neuberger Berman Equity
                                             Trust; Assistant Secretary,  Income
                                             Managers      Trust;      Assistant
                                             Secretary,  Equity  Managers Trust;
                                             Assistant     Secretary,     Global
                                             Managers      Trust;      Assistant
                                             Secretary,  Neuberger Berman Equity
                                             Assets;     Assistant    Secretary,
                                             Neuberger Berman Equity Series.    
                                             
Richard Russell                              Treasurer,     Neuberger     Berman
Vice President, NB Management                Advisers      Management     Trust;
                                             Treasurer, Advisers Managers Trust;
                                             Treasurer,  Neuberger Berman Income
                                             Funds; Treasurer,  Neuberger Berman
                                             Income Trust; Treasurer,  Neuberger
                                             Berman  Equity  Funds;   Treasurer,
                                             Neuberger   Berman   Equity  Trust;
                                             Treasurer,  Income  Managers Trust;
                                             Treasurer,


                                       -9-
<PAGE>


NAME                                         BUSINESS AND OTHER CONNECTIONS

                                             Equity Managers  Trust;  Treasurer,
                                             Global Managers  Trust;  Treasurer,
                                             Neuberger   Berman  Equity  Assets;
                                             Neuberger Berman Equity Series.
                                             
Ingrid Saukaitis                             Project   Director,    Council   on
Assistant Vice President, NB Management      Economic Priorities.(2)        
                                             
Jennifer K. Silver                           Portfolio   Manager  and  Director,
Vice President, NB Management; Principal,    Putnam  Investment Management, Inc.
Neuberger Berman, LLC                        (2)

Daniel J. Sullivan                           Vice  President,  Neuberger  Berman
Senior Vice President, NB Management         Advisers   Management  Trust;  Vice
                                             President, Advisers Managers Trust;
                                             Vice  President,  Neuberger  Berman
                                             Income   Funds;   Vice   President,
                                             Neuberger Berman Income Trust; Vice
                                             President,  Neuberger Berman Equity
                                             Funds;  Vice  President,  Neuberger
                                             Berman    Equity    Trust;     Vice
                                             President,  Income  Managers Trust;
                                             Vice  President,   Equity  Managers
                                             Trust;   Vice   President,   Global
                                             Managers  Trust;   Vice  President,
                                             Neuberger   Berman  Equity  Assets;
                                             Vice  President,  Neuberger  Berman
                                             Equity Series.                     
                                             

Catherine Waterworth                         Managing Director, TCW  Group  Inc.
Vice President, NB Management                (3)

Michael J. Weiner                            Vice  President,  Neuberger  Berman
Principal, Neuberger Berman, LLC;            Advisers   Management  Trust;  Vice
Senior Vice President, NB Management         President, Advisers Managers Trust;
                                             Vice  President,  Neuberger  Berman
                                             Income   Funds;   Vice   President,
                                             Neuberger Berman Income Trust; Vice
                                             President,  Neuberger Berman Equity
                                             Funds;  Vice  President,  Neuberger
                                             Berman    Equity    Trust;     Vice
                                             President,  Income  Managers Trust;
                                             Vice  President,   Equity  Managers
                                             Trust;   Vice   President,   Global
                                             Managers  Trust;   Vice  President,
                                             Neuberger   Berman  Equity  Assets;
                                             Vice  President,  Neuberger  Berman
                                             Equity Series.                     
                                             

Allan R. White, III                          Portfolio  Manager,  Salomon  Asset
Vice President, NB Management;               Management.(3)


                                      -10-
<PAGE>


NAME                                         BUSINESS AND OTHER CONNECTIONS

Principal, Neuberger Berman, LLC

Celeste Wischerth                            Assistant   Treasurer,    Neuberger
Assistant Vice President, NB Management      Berman Advisers  Management  Trust;
                                             Assistant    Treasurer,    Advisers
                                             Managers      Trust;      Assistant
                                             Treasurer,  Neuberger Berman Income
                                             Funds;     Assistant     Treasurer,
                                             Neuberger   Berman   Income  Trust;
                                             Assistant   Treasurer,    Neuberger
                                             Berman  Equity   Funds;   Assistant
                                             Treasurer,  Neuberger Berman Equity
                                             Trust; Assistant Treasurer,  Income
                                             Managers      Trust;      Assistant
                                             Treasurer,  Equity  Managers Trust;
                                             Assistant     Treasurer,     Global
                                             Managers      Trust;      Assistant
                                             Treasurer,  Neuberger Berman Equity
                                             Assets;    Assistant     Treasurer,
                                             Neuberger Berman Equity Series. 
                                             

Lawrence Zicklin                             President  and  Trustee,  Neuberger
Director, NB Management;                     Berman Advisers  Management  Trust;
Principal, Neuberger Berman, LLC             President  and  Trustee,   Advisers
                                             Managers   Trust;   President   and
                                             Trustee,  Neuberger  Berman  Equity
                                             Funds;   President   and   Trustee,
                                             Neuberger   Berman   Equity  Trust;
                                             President   and   Trustee,   Equity
                                             Managers Trust;  President,  Global
                                             Managers   Trust:   President   and
                                             Trustee,  Neuberger  Berman  Equity
                                             Assets;   President   and  Trustee,
                                             Neuberger Berman Equity Series.    
                                             

     The principal address of NB Management,  Neuberger Berman,  LLC and of each
of the investment companies named above, is 605 Third Avenue, New York, New York
10158.

- ----------
(1)  Until January 4, 1999.

(2)  Until 1997.

(3)  Until 1998.

Item 27. Principal Underwriters

     (a) Neuberger Berman  Management  Incorporated,  the principal  underwriter
distributing securities of the Registrant, is also the principal underwriter and
distributor for each of the following investment companies:

               Neuberger Berman Equity Funds
               Neuberger Berman Equity Assets
               Neuberger Berman Equity Trust


                                      -11-
<PAGE>



               Neuberger Berman Equity Series
               Neuberger Berman Income Funds
               Neuberger Berman Income Trust

     NB Management is also the  investment  adviser to the master funds in which
each of the above-named investment companies invest.

     (b) Set forth below is information concerning the directors and officers of
the Registrant's principal  underwriter.  The principal business address of each
of the persons listed is 605 Third Avenue, New York, New York 10158-0180,  which
is also the address of the Registrant's principal underwriter

                         POSITION AND OFFICES            POSITIONS AND OFFICES
     NAME                WITH UNDERWRITER                WITH REGISTRANT
     ----                --------------------            ---------------------

Ramesh Babu              Assistant Vice President        None

Claudia A. Brandon       Vice President                  Secretary

Patrick T. Byrne         Vice President                  None

Richard A. Cantor        Chairman of the Board and 
                         Director                        None

Valerie Chang            Assistant Vice President        None

Brooke A. Cobb           Vice President                  None

Robert Conti             Treasurer                       None

Stacy Cooper-Shugrue     Assistant Vice President        Assistant Secretary

Robert W. D'Alelio       Vice President                  None

Clara Del Villar         Vice President                  None

Barbara DiGiorgio        Assistant Vice President        Assistant Treasurer

Stanley Egener           President and Director          Chairman of the Board, 
                                                         Chief Executive Officer
                                                         and Trustee

Brian J. Gaffney         Vice President                  None

Joseph G. Galli          Vice President                  None

Robert I. Gendelman      Vice President                  None

Theodore P. Giuliano     Vice President and Director     None

Michael J. Hanratty      Assistant Vice President        None

Michael M. Kassen        Vice President and Director     None



                                      -12-
<PAGE>

                         POSITION AND OFFICES            POSITIONS AND OFFICES
     NAME                WITH UNDERWRITER                WITH REGISTRANT
     ----                --------------------            ---------------------

Robert Ladd              Assistant Vice President        None

Irwin Lainoff            Director                        None

Josephine Mahaney        Vice President                  None

Michael F. Malouf        Vice President                  None

Carmen G. Martinez       Assistant Vice President        None

Ellen Metzger            Vice President and Secretary    None

Paul Metzger             Vice President                  None

S. Basu Mullick          Vice President                  None

Loraine Olavarria        Assistant Secretary             None

Janet W. Prindle         Vice President                  None

Joseph S. Quirk          Assistant Vice President        None

Kevin L. Risen           Vice President                  None

Richard Russell          Vice President                  Treasurer and Principal
                                                         Accounting Officer

Ingrid Saukaitis         Assistant Vice President        None

Jennifer K. Silver       Vice President                  None

Kent C. Simons           Vice President                  None

Frederick B. Soule       Vice President                  None

Daniel J. Sullivan       Senior Vice President           Vice President

Peter E. Sundman         Senior Vice President           None

Andrea Trachtenberg      Vice President of Marketing     None

Judith M. Vale           Vice President                  None

Josephine Velez          Assistant Vice President        None

Susan Walsh              Vice President                  None

Catherine Waterworth     Vice President                  None

Michael J. Weiner        Senior Vice President           Vice President and 
                                                         Principal Financial 
                                                         Officer

Allan R. White, III      Vice President                  None



                                      -13-
<PAGE>

                         POSITION AND OFFICES            POSITIONS AND OFFICES
     NAME                WITH UNDERWRITER                WITH REGISTRANT
     ----                --------------------            ---------------------

Celeste Wischerth        Assistant Vice President        Assistant Treasurer

Lawrence Zicklin         Director                        Trustee and President


     (c) No commissions  or  compensation  were received  directly or indirectly
from the  Registrant  by any  principal  underwriter  who was not an  affiliated
person of the Registrant.

Item 28. Location of Accounts and Records

     All  accounts,  books and other  documents  required  to be  maintained  by
Section 31 (a) of the Investment Company Act of 1940, as amended,  and the rules
promulgated  thereunder  with respect to the  Registrant  are  maintained at the
offices of State Street Bank and Trust  Company,  225 Franklin  Street,  Boston,
Massachusetts  02110,  except for the Registrant's  Trust Instrument and Bylaws,
minutes of  meetings  of the  Registrant's  Trustees  and  shareholders  and the
Registrant's policies and contracts,  which are maintained at the offices of the
Registrant, 605 Third Avenue, New York, New York 10158.

Item 29. Management Services

     Other  than as set forth in Parts A and B of this  Registration  Statement,
the Registrant is not a party to any management-related service contract.

Item 30. Undertakings

     None.


                                      -14-
<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 of
the requirements for  effectiveness of this Registration  Statement  pursuant to
Rule  485(b)  under  the  Securities  Act of  1933  and  has  duly  caused  this
Post-Effective  Amendment No. 30 to its  Registration  Statement to be signed on
its behalf by the  undersigned,  thereunto duly  authorized,  in the City of New
York, and the State of New York on the 28th day of April, 1999.


                                        NEUBERGER BERMAN
                                        ADVISERS MANAGEMENT TRUST



                                        By: /s/ Lawrence Zicklin
                                            ---------------------------
                                            Lawrence Zicklin
                                            President, Trustee and
                                            Principal Executive Officer


<PAGE>


     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Post-Effective  Amendment No. 30 has been signed below by the following  persons
in the capacities and on the date indicated.

Signature                               Title                           Date

/s/ Stanley Egener           Chairman and Trustee                      4/28/99  
- ----------------------                                               -----------
Stanley Egenes

/s/ Lawrence Zicklin         President and Trustee                     4/28/99  
- ----------------------       (Principal Executive Officer)           -----------
Lawrence Zicklin             

/s/  Michael J. Weiner       Vice President                            4/28/99  
- ----------------------       (Principal Financial Officer)           -----------
Michael J. Weiner            

/s/  Richard Russell         Treasurer                                 4/28/99  
- ----------------------       (Principal Accounting Officer)          -----------
Richard Russell              

/s/ Faith Colish             Trustee                                   4/28/99  
- ----------------------                                               -----------
Faith Colish

/s/ Walter G. Ehlers         Trustee                                   4/28/99  
- ----------------------                                               -----------
Walter G. Ehlers

/s/ C. Anne Harvey           Trustee                                   11/24/98 
- ----------------------                                               -----------
C. Anne Harvey

/s/ Leslie A. Jacobson       Trustee                                   11/24/98 
- ----------------------                                               -----------
Leslie A. Jacobson

/s/ Robert M. Porter         Trustee                                   11/24/98 
- ----------------------                                               -----------
Robert M. Porter

/s/ Ruth E. Saltmann         Trustee                                   11/24/98 
- ----------------------                                               -----------
Ruth E. Salzmann

/s/ Peter P. Trapp           Trustee                                   4/28/99  
- ----------------------                                               -----------
Peter P. Trapp



<PAGE>


     Pursuant  to  the  requirements  of the  Securities  Act of  1933  and  the
Investment Company Act of 1940,  ADVISERS MANAGERS TRUST certifies that it meets
all of  the  requirements  for  effectiveness  of  this  Registration  Statement
pursuant to Rule  485(b)  under the  Securities  Act of 1933 and has duly caused
this  Post-Effective  Amendment  No.  30 to be  signed  on  its  behalf  by  the
undersigned,  thereunto duly authorized,  in the City of New York, and the State
of New York on the 28th day of April, 1999.


                                        ADVISERS MANAGERS TRUST



                                    By: /s/ Lawrence Zicklin
                                        ---------------------------
                                        Lawrence Zicklin
                                        President, Trustee and
                                        Principal Executive Officer


<PAGE>


     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Post-Effective  Amendment No. 30 has been signed below by the following  persons
in the capacities and on the date indicated.

Signature                               Title                           Date

/s/ Stanley Egener           Chairman and Trustee                      4/28/99  
- ----------------------                                               -----------
Stanley Egenes

/s/ Lawrence Zicklin         President and Trustee                     4/28/99  
- ----------------------       (Principal Executive Officer)           -----------
Lawrence Zicklin             

/s/  Michael J. Weiner       Vice President                            4/28/99  
- ----------------------       (Principal Financial Officer)           -----------
Michael J. Weiner            

/s/  Richard Russell         Treasurer                                 4/28/99  
- ----------------------       (Principal Accounting Officer)          -----------
Richard Russell              

/s/ Faith Colish             Trustee                                   4/28/99  
- ----------------------                                               -----------
Faith Colish

/s/ Walter G. Ehlers         Trustee                                   4/28/99  
- ----------------------                                               -----------
Walter G. Ehlers

/s/ C. Anne Harvey           Trustee                                   11/24/98 
- ----------------------                                               -----------
C. Anne Harvey

/s/ Leslie A. Jacobson       Trustee                                   11/24/99 
- ----------------------                                               -----------
Leslie A. Jacobson

/s/ Robert M. Porter         Trustee                                   11/24/98 
- ----------------------                                               -----------
Robert M. Porter

/s/ Ruth E. Saltmann         Trustee                                   11/24/98 
- ----------------------                                               -----------
Ruth E. Salzmann

/s/ Peter P. Trapp           Trustee                                    4/28/99 
- ----------------------                                               -----------
Peter P. Trapp



<PAGE>



                                INDEX TO EXHIBITS
                      (FOR POST-EFFECTIVE AMENDMENT NO. 30)
                      -------------------------------------

EXHIBIT NO.
UNDER PART C
OF FORM N-1A                       NAME OF EXHIBIT
- -------------                      ---------------

(g)(3)                        Schedule A to the Custodian  Contract  designating
                              approved   foreign   banking    institutions   and
                              securities depositories.

(i)                           Legal Opinion.

(j)(1)                        Consent of Independent Auditors.

(n)                           Financial Data Schedules.


WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule  contains  summary  financial  information  extracted from the AMT
Liquid  Asset  Investments  Annual  Report and is  qualified  in its entirety by
reference to such document.
</LEGEND>
<SERIES>
   <NUMBER>                   01
   <NAME>                     AMT LIQUID ASSET INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                           14,987
<INVESTMENTS-AT-VALUE>                          14,987
<RECEIVABLES>                                       35
<ASSETS-OTHER>                                       6
<OTHER-ITEMS-ASSETS>                                 2
<TOTAL-ASSETS>                                  15,030
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            9
<TOTAL-LIABILITIES>                                  9
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        15,021
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                    15,021
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  827
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                    (82)
<NET-INVESTMENT-INCOME>                            745
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                              745
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                           1,148
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               37
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     82
<AVERAGE-NET-ASSETS>                            14,918
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                    .55
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule  contains  summary  financial  information  extracted from the AMT
Growth  Investments  Annual Report and is qualified in its entirety by reference
to such document.
</LEGEND>
<SERIES>
   <NUMBER>                   02
   <NAME>                     AMT GROWTH INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                          594,896
<INVESTMENTS-AT-VALUE>                         734,331
<RECEIVABLES>                                    3,982
<ASSETS-OTHER>                                      82
<OTHER-ITEMS-ASSETS>                                 3
<TOTAL-ASSETS>                                 738,398
<PAYABLE-FOR-SECURITIES>                         4,290
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      123,317
<TOTAL-LIABILITIES>                            127,607
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       471,356
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       139,435
<NET-ASSETS>                                   610,791
<DIVIDEND-INCOME>                                1,207
<INTEREST-INCOME>                                1,651
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (3,311)
<NET-INVESTMENT-INCOME>                          (453)
<REALIZED-GAINS-CURRENT>                        30,290
<APPREC-INCREASE-CURRENT>                       55,577
<NET-CHANGE-FROM-OPS>                           85,414
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                          24,364
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            3,042
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  3,311
<AVERAGE-NET-ASSETS>                           570,957
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                    .58
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule  contains  summary  financial  information  extracted from the AMT
Limited Maturity Bond Investments Annual Report and is qualified in its entirety
by reference to such document.
</LEGEND>
<SERIES>
   <NUMBER>                   03
   <NAME>                     AMT LIMITED MATURITY BOND INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                          280,434
<INVESTMENTS-AT-VALUE>                         280,656
<RECEIVABLES>                                    4,287
<ASSETS-OTHER>                                      25
<OTHER-ITEMS-ASSETS>                                 3
<TOTAL-ASSETS>                                 284,971
<PAYABLE-FOR-SECURITIES>                         8,181
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           92
<TOTAL-LIABILITIES>                              8,273
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       276,665
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            33
<NET-ASSETS>                                   276,698
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                               17,501
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (835)
<NET-INVESTMENT-INCOME>                         16,666
<REALIZED-GAINS-CURRENT>                       (3,319)
<APPREC-INCREASE-CURRENT>                        (834)
<NET-CHANGE-FROM-OPS>                           12,513
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                          26,040
<ACCUMULATED-NII-PRIOR>                         47,587
<ACCUMULATED-GAINS-PRIOR>                        1,120
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              664
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    835
<AVERAGE-NET-ASSETS>                           265,652
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                    .31
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule  contains  summary  financial  information  extracted from the AMT
Balanced Investments Annual Report and is qualified in its entirety by reference
to such document.
</LEGEND>
<SERIES>
   <NUMBER>                   04
   <NAME>                     AMT BALANCED INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                          181,567
<INVESTMENTS-AT-VALUE>                         208,460
<RECEIVABLES>                                    1,839
<ASSETS-OTHER>                                      25
<OTHER-ITEMS-ASSETS>                                 9
<TOTAL-ASSETS>                                 210,333
<PAYABLE-FOR-SECURITIES>                         2,892
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       29,740
<TOTAL-LIABILITIES>                             32,632
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       150,872
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        26,829
<NET-ASSETS>                                   177,701
<DIVIDEND-INCOME>                                  218
<INTEREST-INCOME>                                4,575
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,067)
<NET-INVESTMENT-INCOME>                          3,726
<REALIZED-GAINS-CURRENT>                         4,111
<APPREC-INCREASE-CURRENT>                       12,006
<NET-CHANGE-FROM-OPS>                           19,843
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                          15,676
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              918
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  1,067
<AVERAGE-NET-ASSETS>                           166,903
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                    .64
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule  contains  summary  financial  information  extracted from the AMT
Partners Investments Annual Report and is qualified in its entirety by reference
to such document.
</LEGEND>
<SERIES>
   <NUMBER>                   05
   <NAME>                     AMT PARTNERS INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                        1,599,041
<INVESTMENTS-AT-VALUE>                       1,750,035
<RECEIVABLES>                                   13,142
<ASSETS-OTHER>                                      44
<OTHER-ITEMS-ASSETS>                                 8
<TOTAL-ASSETS>                               1,763,229
<PAYABLE-FOR-SECURITIES>                        17,034
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      108,168
<TOTAL-LIABILITIES>                            125,202
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     1,487,033
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       150,994
<NET-ASSETS>                                 1,638,027
<DIVIDEND-INCOME>                               31,002
<INTEREST-INCOME>                                1,875
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (9,012)
<NET-INVESTMENT-INCOME>                         23,865
<REALIZED-GAINS-CURRENT>                        27,914
<APPREC-INCREASE-CURRENT>                        4,713
<NET-CHANGE-FROM-OPS>                           56,492
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                          11,354
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            8,430
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  9,012
<AVERAGE-NET-ASSETS>                         1,748,118
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                    .52
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                     6
<SERIES>
   <NUMBER>                   07
   <NAME>                     AMT INTERNATIONAL INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                               0
<RECEIVABLES>                                        0
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       0
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            0
<TOTAL-LIABILITIES>                                  0
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                             0
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                         0
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    0
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       0
<NET-INVESTMENT-INCOME>                              0
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                                0
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                               0
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      0
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                      0
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule  contains  summary  financial  information  extracted from the AMT
Guardian Investments Annual Report and is qualified in its entirety by reference
to such document.
</LEGEND>
<SERIES>
   <NUMBER>                   08
   <NAME>                     AMT GUARDIAN INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                           73,415
<INVESTMENTS-AT-VALUE>                          76,759
<RECEIVABLES>                                      171
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 5
<TOTAL-ASSETS>                                  76,947
<PAYABLE-FOR-SECURITIES>                           851
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        1,875
<TOTAL-LIABILITIES>                              2,726
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        70,041
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         4,180
<NET-ASSETS>                                    74,221
<DIVIDEND-INCOME>                                  364
<INTEREST-INCOME>                                  290
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (259)
<NET-INVESTMENT-INCOME>                            395
<REALIZED-GAINS-CURRENT>                       (5,836)
<APPREC-INCREASE-CURRENT>                        4,162
<NET-CHANGE-FROM-OPS>                          (1,279)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                          73,657
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              200
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    259
<AVERAGE-NET-ASSETS>                            36,302
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                    .71
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule  contains  summary  financial  informtion  extracted  from the AMT
Mid-Cap  Growth  Investments  Annual  Report and is qualifed in its  entirity by
reference to such document.
</LEGEND>
<SERIES>
   <NUMBER>                   09
   <NAME>                     AMT MID-CAP GROWTH INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                           32,458
<INVESTMENTS-AT-VALUE>                          37,153
<RECEIVABLES>                                      238
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                14
<TOTAL-ASSETS>                                  37,417
<PAYABLE-FOR-SECURITIES>                         1,254
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        5,071
<TOTAL-LIABILITIES>                              6,325
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        26,397
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         4,695
<NET-ASSETS>                                    31,092
<DIVIDEND-INCOME>                                   17
<INTEREST-INCOME>                                   91
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (122)
<NET-INVESTMENT-INCOME>                           (14)
<REALIZED-GAINS-CURRENT>                           721
<APPREC-INCREASE-CURRENT>                        4,622
<NET-CHANGE-FROM-OPS>                            5,329
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                          29,518
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               74
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    122
<AVERAGE-NET-ASSETS>                            13,451
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                    .91
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE>                                            6
<SERIES>
   <NUMBER>                   10
   <NAME>                     AMT SOCIALLY RESPONSIVE INVESTMENTS
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                               0
<RECEIVABLES>                                        0
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       0
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            0
<TOTAL-LIABILITIES>                                  0
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                             0
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                         0
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    0
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       0
<NET-INVESTMENT-INCOME>                              0
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                                0
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                               0
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      0
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                      0
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule contains summary financial  information  extracted from the Liquid
Asset  Portfolio  Annual Report and is qualified in its entirety by reference to
such document.
</LEGEND>
<SERIES>
   <NUMBER>                   01 
   <NAME>                     NEUBERGER BERMAN LIQUID ASSET PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                          15,021
<RECEIVABLES>                                        0
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  15,021
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          191
<TOTAL-LIABILITIES>                                191
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        14,832
<SHARES-COMMON-STOCK>                           14,831
<SHARES-COMMON-PRIOR>                           13,442
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            (2)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                    14,830
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  827
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (149)
<NET-INVESTMENT-INCOME>                            678
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                              678
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (678)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          8,197
<NUMBER-OF-SHARES-REDEEMED>                    (7,486)
<SHARES-REINVESTED>                                678
<NET-CHANGE-IN-ASSETS>                           1,390
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                          (2)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    169
<AVERAGE-NET-ASSETS>                            14,874
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                    .05
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                             (.05)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule contains summary financial  information  extracted from the Growth
Portfolio  Annual  Report and is  qualified in its entirety by reference to such
document.
</LEGEND>
<SERIES>
   <NUMBER>                   02 
   <NAME>                     NEUBERGER BERMAN GROWTH PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                         610,791
<RECEIVABLES>                                    5,918
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 616,709
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          337
<TOTAL-LIABILITIES>                                337
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       447,876
<SHARES-COMMON-STOCK>                           23,445
<SHARES-COMMON-PRIOR>                           19,111
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         29,061
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       139,435
<NET-ASSETS>                                   616,372
<DIVIDEND-INCOME>                                1,207
<INTEREST-INCOME>                                1,651
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (5,225)
<NET-INVESTMENT-INCOME>                        (2,367)
<REALIZED-GAINS-CURRENT>                        30,290
<APPREC-INCREASE-CURRENT>                       55,577
<NET-CHANGE-FROM-OPS>                           83,500
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                     (153,331)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          9,386
<NUMBER-OF-SHARES-REDEEMED>                   (11,393)
<SHARES-REINVESTED>                              6,341
<NET-CHANGE-IN-ASSETS>                          32,660
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                      152,102
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  5,225
<AVERAGE-NET-ASSETS>                           570,813
<PER-SHARE-NAV-BEGIN>                            30.54
<PER-SHARE-NII>                                  (.10)
<PER-SHARE-GAIN-APPREC>                           4.12
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (8.27)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              26.29
<EXPENSE-RATIO>                                    .92
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule contains summary financial  information extracted from the Limited
Maturity  Bond  Portfolio  Annual  Report and is  qualified  in its  entirety by
reference to such document.
</LEGEND>
<SERIES>
   <NUMBER>                   03 
   <NAME>                     NEUBERGER BERMAN LIMITED MATURITY BOND PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                         276,698
<RECEIVABLES>                                    1,285
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 277,983
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          637
<TOTAL-LIABILITIES>                                637
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       274,105
<SHARES-COMMON-STOCK>                           20,064
<SHARES-COMMON-PRIOR>                           17,786
<ACCUMULATED-NII-CURRENT>                       15,055
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       (11,847)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            33
<NET-ASSETS>                                   277,346
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                               17,501
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (2,008)
<NET-INVESTMENT-INCOME>                         15,493
<REALIZED-GAINS-CURRENT>                       (3,319)
<APPREC-INCREASE-CURRENT>                        (834)
<NET-CHANGE-FROM-OPS>                           11,340
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (15,689)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          8,174
<NUMBER-OF-SHARES-REDEEMED>                    (7,069)
<SHARES-REINVESTED>                              1,173
<NET-CHANGE-IN-ASSETS>                          26,234
<ACCUMULATED-NII-PRIOR>                         15,665
<ACCUMULATED-GAINS-PRIOR>                      (8,942)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,008
<AVERAGE-NET-ASSETS>                           265,552
<PER-SHARE-NAV-BEGIN>                            14.12
<PER-SHARE-NII>                                    .80
<PER-SHARE-GAIN-APPREC>                          (.21)
<PER-SHARE-DIVIDEND>                             (.89)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.82
<EXPENSE-RATIO>                                    .76
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule contains summary financial information extracted from the Balanced
Portfolio  Annual  Report and is  qualified in its entirety by reference to such
document.
</LEGEND>
<SERIES>
   <NUMBER>                   04 
   <NAME>                     NEUBERGER BERMAN BALANCED PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                         177,701
<RECEIVABLES>                                       72
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 177,773
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          190
<TOTAL-LIABILITIES>                                190
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       143,981
<SHARES-COMMON-STOCK>                           10,869
<SHARES-COMMON-PRIOR>                            9,098
<ACCUMULATED-NII-CURRENT>                        2,848
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          3,925
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        26,829
<NET-ASSETS>                                   177,583
<DIVIDEND-INCOME>                                  218
<INTEREST-INCOME>                                4,575
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,719)
<NET-INVESTMENT-INCOME>                          3,074
<REALIZED-GAINS-CURRENT>                         4,111
<APPREC-INCREASE-CURRENT>                       12,006
<NET-CHANGE-FROM-OPS>                           19,191
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (3,823)
<DISTRIBUTIONS-OF-GAINS>                      (26,852)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,288
<NUMBER-OF-SHARES-REDEEMED>                    (1,538)
<SHARES-REINVESTED>                              2,021
<NET-CHANGE-IN-ASSETS>                          15,674
<ACCUMULATED-NII-PRIOR>                          3,753
<ACCUMULATED-GAINS-PRIOR>                       26,510
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  1,719
<AVERAGE-NET-ASSETS>                           166,789
<PER-SHARE-NAV-BEGIN>                            17.80
<PER-SHARE-NII>                                    .29
<PER-SHARE-GAIN-APPREC>                           1.62
<PER-SHARE-DIVIDEND>                             (.42)
<PER-SHARE-DISTRIBUTIONS>                       (2.95)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              16.34
<EXPENSE-RATIO>                                   1.03
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule contains summary financial information extracted from the Partners
Portfolio  Annual  Report and is  qualified in its entirety by reference to such
document.
</LEGEND>
<SERIES>
   <NUMBER>                   05 
   <NAME>                     NEUBERGER BERMAN PARTNERS PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                       1,638,027
<RECEIVABLES>                                    2,725
<ASSETS-OTHER>                                       1
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               1,640,753
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       10,284
<TOTAL-LIABILITIES>                             10,284
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     1,436,073
<SHARES-COMMON-STOCK>                           86,130
<SHARES-COMMON-PRIOR>                           79,263
<ACCUMULATED-NII-CURRENT>                       18,225
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         25,177
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       150,994
<NET-ASSETS>                                 1,630,469
<DIVIDEND-INCOME>                               31,002
<INTEREST-INCOME>                                1,875
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                (14,650)
<NET-INVESTMENT-INCOME>                         18,227
<REALIZED-GAINS-CURRENT>                        27,914
<APPREC-INCREASE-CURRENT>                        4,713
<NET-CHANGE-FROM-OPS>                           50,854
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (6,673)
<DISTRIBUTIONS-OF-GAINS>                     (210,214)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         33,151
<NUMBER-OF-SHARES-REDEEMED>                   (37,464)
<SHARES-REINVESTED>                             11,180
<NET-CHANGE-IN-ASSETS>                         (2,366)
<ACCUMULATED-NII-PRIOR>                          6,693
<ACCUMULATED-GAINS-PRIOR>                      207,455
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 14,650
<AVERAGE-NET-ASSETS>                         1,747,758
<PER-SHARE-NAV-BEGIN>                            20.60
<PER-SHARE-NII>                                    .20
<PER-SHARE-GAIN-APPREC>                            .73
<PER-SHARE-DIVIDEND>                             (.08)
<PER-SHARE-DISTRIBUTIONS>                       (2.52)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              18.93
<EXPENSE-RATIO>                                    .84
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<SERIES>
   <NUMBER>                   07 
   <NAME>                     NEUBERGER BERMAN INTERNATIONAL PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                               0
<RECEIVABLES>                                        0
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       0
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            0
<TOTAL-LIABILITIES>                                  0
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                             0
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                         0
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    0
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       0
<NET-INVESTMENT-INCOME>                              0
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                                0
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                               0
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      0
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                      0
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule contains summary financial information extracted from the Guardian
Portfolio  Annual  Report and is  qualified in its entirety by reference to such
document.
</LEGEND>
<SERIES>
   <NUMBER>                   08 
   <NAME>                     NEUBERGER BERMAN GUARDIAN PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                          74,221
<RECEIVABLES>                                      183
<ASSETS-OTHER>                                       8
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  74,412
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          300
<TOTAL-LIABILITIES>                                300
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        75,480
<SHARES-COMMON-STOCK>                            5,354
<SHARES-COMMON-PRIOR>                               54
<ACCUMULATED-NII-CURRENT>                          289
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        (5,837)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         4,180
<NET-ASSETS>                                    74,112
<DIVIDEND-INCOME>                                  364
<INTEREST-INCOME>                                  290
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (363)
<NET-INVESTMENT-INCOME>                            291
<REALIZED-GAINS-CURRENT>                       (5,836)
<APPREC-INCREASE-CURRENT>                        4,162
<NET-CHANGE-FROM-OPS>                          (1,383)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          (2)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          7,993
<NUMBER-OF-SHARES-REDEEMED>                    (2,693)
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                          73,545
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                          (1)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    413
<AVERAGE-NET-ASSETS>                            36,287
<PER-SHARE-NAV-BEGIN>                            10.52
<PER-SHARE-NII>                                    .11
<PER-SHARE-GAIN-APPREC>                           3.22
<PER-SHARE-DIVIDEND>                             (.01)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.84
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<LEGEND>
This schedule contains summary financial  information extracted from the Mid-Cap
Growth  Portfolio Annual Report and is qualified in its entirety by reference to
such document.
</LEGEND>
<SERIES>
   <NUMBER>                   09 
   <NAME>                     NEUBERGER BERMAN MID-CAP GROWTH PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                          31,092
<RECEIVABLES>                                       29
<ASSETS-OTHER>                                       8
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  31,129
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          105
<TOTAL-LIABILITIES>                                105
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        25,638
<SHARES-COMMON-STOCK>                            1,912
<SHARES-COMMON-PRIOR>                              145
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            691
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         4,695
<NET-ASSETS>                                    31,024
<DIVIDEND-INCOME>                                   17
<INTEREST-INCOME>                                   91
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (135)
<NET-INVESTMENT-INCOME>                           (27)
<REALIZED-GAINS-CURRENT>                           721
<APPREC-INCREASE-CURRENT>                        4,622
<NET-CHANGE-FROM-OPS>                            5,316
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          (1)
<DISTRIBUTIONS-OF-GAINS>                          (22)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,992
<NUMBER-OF-SHARES-REDEEMED>                      (227)
<SHARES-REINVESTED>                                  2
<NET-CHANGE-IN-ASSETS>                          29,325
<ACCUMULATED-NII-PRIOR>                              1
<ACCUMULATED-GAINS-PRIOR>                           18
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    193
<AVERAGE-NET-ASSETS>                            13,442
<PER-SHARE-NAV-BEGIN>                            11.72
<PER-SHARE-NII>                                  (.03)
<PER-SHARE-GAIN-APPREC>                           4.61
<PER-SHARE-DIVIDEND>                             (.01)
<PER-SHARE-DISTRIBUTIONS>                        (.07)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              16.22
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE>                                            6
<SERIES>
   <NUMBER>                   10 
   <NAME>                     NEUBERGER BERMAN SOCIALLY RESPONSIVE PORTFOLIO
<MULTIPLIER>                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                               0
<RECEIVABLES>                                        0
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                       0
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            0
<TOTAL-LIABILITIES>                                  0
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                             0
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                         0
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    0
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       0
<NET-INVESTMENT-INCOME>                              0
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                                0
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                               0
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      0
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                      0
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


                      SCHEDULE A TO THE CUSTODIAN CONTRACT

                                   SCHEDULE A
                   NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST
                             ADVISERS MANAGERS TRUST

     The  following   foreign  banking   institutions  and  foreign   securities
depositories have been approved by the boards of trustees of the above mentioned
trust as sub-custodians for the securities and other assets:

Citibank, N.A.  (Caja de Valores) (Argentina)

Westpac Banking Corp. (Austraclear/RITS) (Australia)

GiroCredit Bank Aktiengesellschaft der Sparkassen (OEKB) (Austria)

Generale Bank (C.I.K., Banque Nationale de Belgique) (Belgium)

Citibank, N.A. (BOVESPA, CETIP, SELIC) (Brazil)

State Street Canada Trust Company (CDS) (Canada)

Citibank, N.A. (Chile)

The Hong Kong and Shanghai Banking Corporation Limited (SSCCRC, SSCC) (China)

Cititrust Colombia S.A. Sociedad Fiduciaria (Colombia)

Ceskoslovenska Obchodni Banka A.S. (SCP, Czech National Bank) (Czech Republic)

Den Danske Bank (VP) (Denmark)

Merita Bank Limited (CSD) (Finland)

Banque Paribas (SICOVAM, Banque de France) (France)

Dresdner Bank AG (Kassenverein) (Germany)

National Bank of Greece S.A. (Apothetirion Titlon A.E., Bank of Greece) (Greece)

Standard Chartered Bank, Hong Kong (CCASS, CMU) (Hong Kong)

Citibank Budapest Rt. (KELER, Ltd) (Hungary)

Deutsche Bank AG, The Hong Kong and Shanghai Banking Corporation Limited (India)


                                       1
<PAGE>

Standard Chartered Bank (Indonesia)

Bank of Ireland (Central Bank of Ireland/GSO) (Ireland)

Bank Hapoalim B.M. (The Clearing House of the Tel Aviv Stock Exchange Bank of
Israel) (Israel)

Banque Paribas (Monte Titoli S.p.A. Banca d'Italia) (Italy)

Sumitomo Trust & Banking Company, Limited, The Fuji Bank, Ltd. (JASDEC, Bank of
Japan) (Japan)

Standard Chartered Bank Malaysia Berhad (MCD, SSTS) (Malaysia)

Citibank Mexico, S.A. (INDEVAL) (Mexico)

Banque Comeriale du Maroc (Morocco)

MeesPierson N.V. (NECIGEF, De Nederlandshce Bank, N.V.) (The Netherlands)

ANZ Banking Group (NZ) Ltd. (NZCSD) (New Zealand)

Christiani Bank og Kreditkasse (VPS) (Norway)

Deutsche Bank AG (Pakistan)

Citibank, N.A. (CAVALI) (Peru)

Standard Chartered Bank (PCD, BES, ROSS) (the Philippines)

Citibank Poland, S.A. (The National Depository of Securities, National Bank of
Poland) (Poland)

Banco Comercial Portuguese (Central de Valores Mobiliarios) (Portugal)

Seoulbank (KSD) (Republic of Korea)

Credit Suisse First Boston/Credit Suisse First Boston Limited (Russia)

The Development Bank of Singapore, Ltd. (CDP) (Singapore)

Ceskoslovenska Obchodna Banka, A.S. (SCP, National Bank of Slovakia) (Slovak
Republic)

Standard Bank of South Africa Limited (The Central Depository Limited) (South
Africa)

Banco Santander, S.A. (SCLV, Banco de Espana) (Spain)


                                       2
<PAGE>

Skandinaviska Enskilda Banken (VPC) (Sweden)

Union Bank of Switzerland (SEGA) (Switzerland)

Central Trust of China (TSCD) (Taiwan)

Standard Chartered Bank, Bangkok (TSD) (Thailand)

Citibank, N.A. (TAKASBANK, Central Bank of Turkey) (Turkey)

State Street Bank and Trust Co. and State Street London Limited (CGO, CMO, ESO)
(United Kingdom)

Citibank, N.A. (Venezuela)

The Euroclear System

Cedel Bank societe anonyme and INTERSETTLE



NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST

ADVISERS MANAGERS TRUST



Name: 
      --------------------------------
      Michael J. Weiner


Date:



                                       3




                     [Letterhead of Dechert Price & Rhoads]


                                 April 27, 1999

                         Opinion and Consent of Counsel

Neuberger Berman Advisers
   Management Trust
605 Third Avenue, 2nd Floor
New York, NY  10158-0006

Ladies and Gentlemen:

     This opinion is given in  connection  with the filing by  Neuberger  Berman
Advisers   Management   Trust,   a  Delaware   business  trust   ("Trust"),   of
Post-Effective Amendment No. 30 to the Registration Statement filed on Form N-1A
("Registration  Statement")  under the  Securities  Act of 1933 ("1933 Act") and
Amendment No. 30 under the Investment Company Act of 1940 ("1940 Act"), relating
to an  indefinite  amount of  authorized  shares of  beneficial  interest of the
following  separate  series of the Trust:  the  Balanced  Portfolio,  the Growth
Portfolio,  the Liquid Asset Portfolio, the Limited Maturity Bond Portfolio, the
Partners Portfolio,  the International  Portfolio,  the Guardian Portfolio,  the
Mid-Cap Growth Portfolio,  and the Socially Responsive Portfolio  (collectively,
the  "Portfolios").   The  authorized  shares  of  beneficial  interest  of  the
Portfolios are hereinafter referred to as the "Shares."

     We have examined the following Trust documents:  the Trust Instrument dated
May 23, 1994 and all amendments thereto;  the By-Laws dated May 23, 1994 and all
amendments  thereto;  this  Post-Effective  Amendment No. 30 to the Registration
Statement  filed on Form N-1A; and such other corporate  records,  certificates,
documents  and  statutes  that we have  deemed  relevant  in order to render the
opinion expressed herein.

     Based on such examination, we are of the opinion that:

1.   Neuberger  Berman Advisers  Management  Trust is a Delaware  business trust
     duly organized,  validly  existing,  and in good standing under the laws of
     the State of Delaware; and

2.   The Shares to be offered for sale by Neuberger  Berman Advisers  Management
     Trust,  when  issued  in  the  manner   contemplated  by  the  Registration
     Statement,  will be legally issued,  fully-paid and  non-assessable  by the
     Trust.

     We  consent to the use of this  opinion  as an exhibit to the  Registration
Statement  and to the  reference  to Dechert  Price & Rhoads  under the  caption
"Legal   Counsel"  in  the  

<PAGE>

Statement of Additional Information, which is incorporated by reference into the
Prospectus, each comprising a part of the Registration Statement.


                                                Very truly yours,



                                                DECHERT PRICE & RHOADS




               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


We  consent  to the  references  to  our  firm  under  the  captions  "Financial
Highlights"  in each  Prospectus  and  "Reports to  Shareholders",  "Independent
Auditors" and "Financial  Statements" in the Statement of Additional Information
in Post-Effective  Amendment Number 30 to the Registration  Statement (Form N-1A
No.  2-88566)  of  Neuberger  Berman  Advisers  Management  Trust,  and  to  the
incorporation by reference of our reports dated January 29, 1999 on the Balanced
Portfolio,   Growth  Portfolio,   Guardian  Portfolio,   Limited  Maturity  Bond
Portfolio,  Liquid  Asset  Portfolio,  Mid-Cap  Growth  Portfolio,  and Partners
Portfolio,  seven of the series comprising  Neuberger Berman Advisers Management
Trust, and on AMT Balanced  Investments,  AMT Growth  Investments,  AMT Guardian
Investments,   AMT  Limited   Maturity  Bond   Investments,   AMT  Liquid  Asset
Investments, AMT Mid-Cap Growth Investments, and AMT Partners Investments, seven
of the series comprising  Advisers  Managers Trust,  included in the 1998 Annual
Report to Shareholders of Neuberger Berman Advisers Management Trust.



                                                   ERNST & YOUNG LLP


Boston, Massachusetts
April 26, 1999



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission