VANGUARD/WELLINGTON FUND INC
497, 2000-03-28
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                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                    FORM N-1A

     REGISTRATION STATEMENT (NO. 2-11444) UNDER THE SECURITIES ACT OF 1933

                           PRE-EFFECTIVE AMENDMENT NO.

                         POST-EFFECTIVE AMENDMENT NO. 81

                                       AND

        REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

                                AMENDMENT NO. 81




                            VANGUARD WELLINGTON FUND
         (EXACT NAME OF REGISTRANT AS SPECIFIED IN DECLARATION OF TRUST)

                      P.O. BOX 2600, VALLEY FORGE, PA 19482
                     (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)

                  REGISTRANT'S TELEPHONE NUMBER (610) 669-1000

                           R. GREGORY BARTON, ESQUIRE

                                  P.O. BOX 876

                             VALLEY FORGE, PA 19482

                 APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
   AS SOON AS PRACTICABLE AFTER THIS REGISTRATION STATEMENT BECOMES EFFECTIVE.

                IT IS PROPOSED THAT THIS FILING BECOME EFFECTIVE:
            ON MARCH 24, 2000, PURSUANT TO PARAGRAPH (B) OF RULE 485.


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                                                VANGUARD
                                                WELLINGTON(TM)
                                                FUND

                                                Prospectus
                                                March 24, 2000

This prospectus contains
financial data for the
Fund through the
fiscal year ended
November 30, 1999.

                                                [A MEMBER OF
                                                THE VANGUARD GROUP(R)]
<PAGE>

VANGUARD(R) WELLINGTON(TM) FUND
Prospectus
March 24, 2000

A Balanced Mutual Fund


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CONTENTS
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 1 FUND PROFILE                           15 FINANCIAL HIGHLIGHTS

 4 ADDITIONAL INFORMATION                 17 INVESTING WITH VANGUARD

 4 A WORD ABOUT RISK                         17 SERVICES AND ACCOUNT FEATURES

 4 WHO SHOULD INVEST                         18 TYPES OF ACCOUNTS

 5 PRIMARY INVESTMENT STRATEGIES             19 BUYING SHARES

11 THE FUND AND VANGUARD                     21 REDEEMING SHARES

11 INVESTMENT ADVISER                        25 TRANSFERRING REGISTRATION

12 DIVIDENDS, CAPITAL GAINS, AND TAXES       25 FUND AND ACCOUNT UPDATES

14 SHARE PRICE                            GLOSSARY (inside back cover)
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WHY READING THIS PROSPECTUS IS IMPORTANT
This  prospectus  explains the  objective,  risks,  and  strategies  of Vanguard
Wellington  Fund.  To  highlight  terms and  concepts  important  to mutual fund
investors,  we have provided "Plain Talk(R)" explanations along the way. Reading
the prospectus will help you to decide whether the Fund is the right  investment
for you. We suggest that you keep it for future reference.
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NEITHER  THE  SECURITIES  AND  EXCHANGE  COMMISSION  NOR  ANY  STATE  SECURITIES
COMMISSION HAS APPROVED OR  DISAPPROVED  OF THESE  SECURITIES OR PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
<PAGE>

                                                                               1

FUND PROFILE

The following profile summarizes key features of Vanguard Wellington Fund.

INVESTMENT OBJECTIVE
The Fund seeks to conserve capital and to provide  moderate  long-term growth in
capital and income.

INVESTMENT STRATEGIES
The  Fund  invests  60% to  70%  of its  assets  in  dividend-paying  stocks  of
established,  large and medium-size companies. In choosing these companies,  the
adviser  seeks  those  that  appear  to be  undervalued  but to  have  improving
prospects.  These stocks are commonly referred to as value stocks. The remaining
30% to 40% of assets are invested  primarily in high-quality  intermediate-  and
long-term  corporate  bonds,  with some  exposure to U.S.  Treasury,  government
agency, and mortgage-backed bonds.

PRIMARY RISKS
THE FUND'S TOTAL  RETURN,  LIKE THE PRICES OF STOCKS AND BONDS,  WILL  FLUCTUATE
WITHIN A WIDE  RANGE,  SO AN  INVESTOR  COULD LOSE MONEY OVER SHORT OR EVEN LONG
PERIODS. The Fund is also subject to:
- -    Investment  style risk,  which is the chance that  returns  from large- and
     mid-capitalization value stocks will trail returns from other asset classes
     or the overall stock market.
- -    Interest  rate risk,  which is the chance  that bond  prices  overall  will
     decline  over  short or even long  periods  due to rising  interest  rates.
     Interest  rate risk should be modest for  shorter-term  bond funds and high
     for longer-term bond funds.
- -    Credit  risk,  which is the  chance  that a bond  issuer  will  fail to pay
     interest and  principal  in a timely  manner,  reducing the Fund's  return.
     Credit risk should be low for the Fund.
- -    Manager risk,  which is the chance that poor security  selection will cause
     the Fund to underperform other funds with similar investment objectives.

PERFORMANCE/RISK INFORMATION

The bar chart and table below  provide an indication of the risk of investing in
the Fund. The bar chart shows the Fund's  performance in each calendar year over
a ten-year  period.  The table shows how the Fund's average annual total returns
for one,  five,  and ten calendar  years  compare with those of both the S&P 500
Index, a broad stock market benchmark, and a composite stock/bond index weighted
65% in the S&P 500 Index and 35% in a broad bond market index. Keep in mind that
the Fund's past performance does not indicate how it will perform in the future.

<PAGE>

2

              ----------------------------------------------------
                              ANNUAL TOTAL RETURNS
              ----------------------------------------------------
                                1990        -2.81%
                                1991        23.65%
                                1992         7.93%
                                1993        13.52%
                                1994        -0.49%
                                1995        32.92%
                                1996        16.19%
                                1997        23.23%
                                1998        12.06%
                                1999         4.41%
              ----------------------------------------------------

     During the period shown in the bar chart, the highest return for a calendar
quarter was 12.19%  (quarter  ended June 30,  1997) and the lowest  return for a
quarter was -9.48% (quarter ended September 30, 1990).

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         AVERAGE ANNUAL TOTAL RETURNS FOR YEARS ENDED DECEMBER 31, 1999
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                                    1 YEAR         5 YEARS           10 YEARS
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Vanguard Wellington Fund             4.41%          17.36%            12.55%
S&P 500 Index                       21.04           28.56             18.21
Composite Index*                    10.61           21.39              4.84
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*Prior to March 1, 2000,  weighted  65% in the S&P 500 Index,  35% in the Lehman
Brothers  Long  Corporate  AA or Better  Bond  Index.  Effective  March 1, 2000,
weighted  65% in the S&P 500 Index,  35% in the Lehman  Brothers  Corporate A or
Better Bond Index.
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FEES AND EXPENSES
The following  table  describes the fees and expenses you may pay if you buy and
hold shares of the Fund. The expenses shown under Annual Fund Operating Expenses
are based upon those incurred in the fiscal year ended November 30, 1999.

      SHAREHOLDER FEES (fees paid directly from your investment)
      Sales Charge (Load) Imposed on Purchases:                 None
      Sales Charge (Load) Imposed on Reinvested Dividends:      None
      Redemption Fee:                                           None
      Exchange Fee:                                             None

      ANNUAL FUND OPERATING EXPENSES (expenses deducted from the Fund's assets)
      Management Expenses:                                      0.28%
      12b-1 Distribution Fee:                                   None
      Other Expenses:                                           0.02%
        TOTAL ANNUAL FUND OPERATING EXPENSES:                   0.30%
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                                                                               3

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                                PLAIN TALK ABOUT
                                  FUND EXPENSES
All mutual funds have operating  expenses.  These  expenses,  which are deducted
from a fund's gross  income,  are expressed as a percentage of the net assets of
the fund.  Vanguard  Wellington  Fund's  expense  ratio in fiscal  year 1999 was
0.30%,  or $3.00 per $1,000 of average net assets.  The average  balanced mutual
fund had  expenses in 1999 of 1.33%,  or $13.30 per $1,000 of average net assets
(derived  from data  provided by Lipper Inc.,  which  reports on the mutual fund
industry).  Management  expenses,  which  are one  part of  operating  expenses,
include investment advisory fees as well as other costs of managing a fund--such
as account maintenance,  reporting,  accounting, legal, and other administrative
expenses.
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     The following example is intended to help you compare the cost of investing
in the Fund with the cost of investing in other mutual funds. It illustrates the
hypothetical  expenses  that you would incur over various  periods if you invest
$10,000 in the Fund.  This example assumes that the Fund provides a return of 5%
a year and that operating expenses remain the same. The results apply whether or
not you redeem your investment at the end of each period.

              ----------------------------------------------------
               1 YEAR       3 YEARS       5 YEARS        10 YEARS
              ----------------------------------------------------
                $31           $97          $169            $381
              ----------------------------------------------------

     THIS  EXAMPLE  SHOULD NOT BE  CONSIDERED  TO REPRESENT  ACTUAL  EXPENSES OR
PERFORMANCE  FROM THE PAST OR FOR THE  FUTURE.  ACTUAL  FUTURE  EXPENSES  MAY BE
HIGHER OR LOWER THAN THOSE SHOWN.

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                                PLAIN TALK ABOUT
                             THE COSTS OF INVESTING
Costs are an important  consideration in choosing a mutual fund.  That's because
you, as a shareholder,  pay the costs of operating a fund,  plus any transaction
costs  associated with the fund's buying and selling of securities.  These costs
can erode a substantial  portion of the gross income or capital  appreciation  a
fund achieves. Even seemingly small differences in expenses can, over time, have
a dramatic effect on a fund's performance.
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4

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ADDITIONAL INFORMATION

DIVIDENDS AND CAPITAL GAINS                        MINIMUM INITIAL INVESTMENT
Dividends are distributed quarterly in March,      $3,000; $1,000 for IRAs and
June, September, and December; capital gains, if   custodial accounts for
any, are distributed annually in December          minors

INVESTMENT ADVISER                                 NEWSPAPER ABBREVIATION
Wellington Management Company, LLP, Boston,        Welltn
Mass., since inception
                                                   VANGUARD FUND NUMBER
INCEPTION DATE                                     021
July 1, 1929
                                                   CUSIP NUMBER
NET ASSETS AS OF NOVEMBER 30, 1999                 921935102
$25.8 billion
                                                   TICKER SYMBOL
SUITABLE FOR IRAS                                  VWELX
Yes
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A WORD ABOUT RISK

This  prospectus  describes  risks you would  face as an  investor  in  Vanguard
Wellington  Fund.  It is  important  to keep in mind one of the main  axioms  of
investing: The higher the risk of losing money, the higher the potential reward.
The  reverse,  also,  is  generally  true:  The lower  the  risk,  the lower the
potential  reward.  As you consider an investment  in the Fund,  you should also
take into account your  personal  tolerance  for the daily  fluctuations  of the
stock and bond markets.
     Look for this [FLAG] symbol  throughout the prospectus.  It is used to mark
detailed  information  about  each  type of risk that you  would  confront  as a
shareholder of the Fund.
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WHO SHOULD INVEST

The Fund may be a suitable investment for you if:
- -    You want a simple way to invest in a relatively  fixed percentage of stocks
     and bonds.
- -    You are seeking  moderate  growth of your  capital  over the long  term--at
     least  five  years--but  you  want  to  hold  down  risk  by  investing  in
     established companies and high-quality bonds.
- -    You are seeking moderate current income.

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                                PLAIN TALK ABOUT
                             COSTS AND MARKET-TIMING
Some   investors  try  to  profit  from   market-timing--switching   money  into
investments  when they  expect  prices to rise,  and taking  money out when they
expect  the  market  to fall.  As money is  shifted  in and out,  a fund  incurs
expenses  for buying and selling  securities.  These costs are borne by all fund
shareholders,  including the long-term  investors who do not generate the costs.
Therefore,  the Fund  discourages  short-term  trading by,  among other  things,
limiting the number of exchanges it permits.
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                                                                               5

     THE VANGUARD FUNDS DO NOT PERMIT MARKET-TIMING.  DO NOT INVEST IN THIS FUND
IF YOU ARE A MARKET-TIMER.

     The Fund has adopted the following  policies,  among others,  to discourage
short-term trading:
- -    The Fund  reserves  the right to  reject  any  purchase  request--including
     exchanges from other  Vanguard  funds--that it regards as disruptive to the
     efficient  management  of the Fund.  A purchase  request  could be rejected
     because  of the  timing  of the  investment  or  because  of a  history  of
     excessive trading by the investor.
- -    There is a limit on the  number of times you can  exchange  into and out of
     the Fund (see "Redeeming Shares" in the INVESTING WITH VANGUARD section).
- -    The Fund reserves the right to stop offering shares at any time.

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                                PLAIN TALK ABOUT
                                 BALANCED FUNDS
Balanced  funds are  generally  "middle  of the road"  investments  that seek to
provide some  combination  of growth,  income,  and  conservation  of capital by
investing in a mix of stocks,  bonds, and/or money market  instruments.  Because
the prices of stocks  and bonds  often move in  different  directions,  balanced
funds are able to use  rewards  from one type of  investment  to help offset the
risks from another.
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PRIMARY INVESTMENT STRATEGIES

This section explains the strategies that the investment adviser uses in pursuit
of the Fund's objective of conservation of capital and moderate long-term growth
of capital  and  income.  It also  explains  how the  adviser  implements  these
strategies.  In addition, this section discusses several important risks--market
risk,  interest  rate risk,  manager  risk,  investment  style risk,  and credit
risk--faced  by  investors  in the Fund.  The Fund's  Board of  Trustees,  which
oversees the management of the Fund, may change the Fund's investment  objective
or strategies in the interest of shareholders, without a shareholder vote.

MARKET EXPOSURE

STOCKS
Roughly two-thirds of the Fund's assets are invested in common stocks. At times,
the Fund may also invest in securities that are convertible to common stocks.

[FLAG] THE FUND IS SUBJECT TO STOCK MARKET RISK,  WHICH IS THE CHANCE THAT STOCK
     PRICES OVERALL WILL DECLINE OVER SHORT OR EVEN LONG PERIODS.  STOCK MARKETS
     TEND TO MOVE IN  CYCLES,  WITH  PERIODS  OF RISING  PRICES  AND  PERIODS OF
     FALLING PRICES.

     To illustrate the volatility of stock prices, the following table shows the
best,  worst,  and average total returns for the U.S.  stock market over various
periods as measured by the Standard & Poor's 500 Index,  a widely used barometer
of market  activity.  (Total returns  consist of dividend  income plus change in
market  price.)  Note that the returns  shown do not include the costs of buying
and selling stocks or other expenses that a real-world
<PAGE>

6

investment  portfolio  would incur.  Note,  also,  that the gap between best and
worst tends to narrow over the long term.


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                      U.S. STOCK MARKET RETURNS (1926-1999)
- --------------------------------------------------------------------------------
                                 1 YEAR      5 YEARS      10 YEARS      20 YEARS
- --------------------------------------------------------------------------------
Best                              54.2%       28.6%         19.9%         17.9%
Worst                            -43.1       -12.4          -0.9           3.1
Average                           13.2        11.0          11.1          11.1
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     The table  covers all of the 1-, 5-,  10-,  and 20-year  periods  from 1926
through 1999. You can see, for example,  that while the average return on stocks
for all of the 5-year periods was 11.0%,  returns for individual  5-year periods
ranged  from a -12.4%  average  (from  1928  through  1932) to 28.6%  (from 1995
through 1999 ). These average returns reflect past performance on common stocks;
you should not regard them as an  indication  of future  returns from either the
stock market as a whole or this Fund in particular.

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                                PLAIN TALK ABOUT
                    LARGE-CAP, MID-CAP, AND SMALL-CAP STOCKS
Stocks  of  publicly  traded   companies--and   mutual  funds  that  hold  these
stocks--can be classified by the  companies'  market value,  or  capitalization.
Market  capitalization  changes over time, and there is no "official" definition
of the boundaries of large-,  mid-,  and small-cap  stocks.  Vanguard  generally
defines  large-capitalization  (large-cap)  funds as  those  holding  stocks  of
companies  whose  outstanding  shares have a market value exceeding $12 billion;
mid-cap funds as those holding  stocks of companies  with a market value between
$1 billion and $12  billion;  and  small-cap  funds as those  typically  holding
stocks  of  companies  with a market  value of less  than $1  billion.  Vanguard
periodically reassesses these classifications.
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BONDS
Approximately one-third of the Fund's assets are invested in bonds.

[FLAG] THE FUND IS SUBJECT TO INTEREST RATE RISK,  WHICH IS THE CHANCE THAT BOND
     PRICES  OVERALL  WILL DECLINE OVER SHORT OR EVEN LONG PERIODS DUE TO RISING
     INTEREST RATES.  INTEREST RATE RISK SHOULD BE MODEST FOR SHORTER-TERM  BOND
     FUNDS AND HIGHER FOR LONGER-TERM BOND FUNDS.

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                                PLAIN TALK ABOUT
                            BONDS AND INTEREST RATES
As a rule,  when  interest  rates rise,  bond prices fall.  The opposite is also
true:  Bond  prices go up when  interest  rates  fall.  Why do bond  prices  and
interest  rates move in opposite  directions?  Let's assume that you hold a bond
offering a 5% yield. A year later,  interest rates are on the rise and bonds are
offered with a 6% yield. With  higher-yielding  bonds available,  you would have
trouble selling your 5% bond for the price you  paid--causing  you to lower your
asking  price.  On the other hand,  if interest  rates were falling and 4% bonds
were  being  offered,  you should be able to sell your 5% bond for more than you
paid.
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<PAGE>

                                                                               7

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                                PLAIN TALK ABOUT
                                 BOND MATURITIES
A bond is issued with a specific  maturity  date--the date when the bond issuer,
or seller,  must pay back the bond's  initial value (known as its "face value").
Bond maturities generally range from less than one year (short-term) to 30 years
(long-term).  The  longer  a  bond's  maturity,  the more  risk  you,  as a bond
investor,  face as interest  rates  rise--but  also the more  interest you could
receive. Long-term bonds are more suitable for investors willing to take greater
risks in hope of higher yields;  short-term bond investors  should be willing to
accept  lower  yields  in  return  for less  fluctuation  in the  value of their
investment.
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     Although  bonds are often thought to be less risky than stocks,  there have
been periods when bond prices have fallen  significantly  due to rising interest
rates.  For  instance,  prices of  long-term  bonds fell by almost  48%  between
December 1976 and September 1981.
     To illustrate the relationship  between bond prices and interest rates, the
following  table shows the effect of a 1% and a 2% change  (both up and down) in
interest rates on three bonds of different maturities, each with a face value of
$1,000.

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                      HOW INTEREST RATE CHANGES AFFECT THE
                             VALUE OF A $1,000 BOND*
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                              AFTER A 1%   AFTER A 1%   AFTER A 2%    AFTER A 2%
TYPE OF BOND (MATURITY)        INCREASE     DECREASE     INCREASE      DECREASE
- --------------------------------------------------------------------------------
Short-Term (2.5 years)           $978        $1,023        $956          $1,046
Intermediate-Term (10 years)      932         1,074         870           1,156
Long-Term (20 years)              901         1,116         816           1,251
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*Assumes a 7% yield.
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     These figures are for illustrative purposes only and should not be regarded
as an indication  of future  returns from the bond market as a whole or the Fund
in particular.
     Finally,  because stock and bond prices often move in different directions,
the Fund's bond holdings help to dampen--but  not  eliminate--some  of the stock
market volatility  experienced by the Fund. Likewise,  changes in interest rates
may not have as  dramatic  an effect on the Fund as they would on a fund made up
entirely of bonds.

SECURITY SELECTION
Wellington Management Company, LLP (Wellington Management), adviser to the Fund,
invests approximately 60% to 70% of the Fund's assets in dividend-paying  common
stocks  and  the  remaining  30%  to 40% of its  assets  in  high-quality,  U.S.
investment-grade  bonds.  While the mix of stocks and bonds  varies from time to
time  depending on the  adviser's  view of economic and market  conditions,  the
stock portion can be expected to represent at least 60% of the Fund's holdings.
     The Fund is run by Wellington  Management  according to traditional methods
of  active  investment  management.  Securities  are  bought  and sold  based on
Wellington Management's judgments about companies and their financial prospects,
and about bond issuers and the general level of interest  rates.  To achieve the
Fund's  objective of  conservation of capital and moderate growth in capital and
income, the adviser follows specific strategies for stock and bond selection.
     The Fund is generally managed without regard to tax ramifications.
<PAGE>

8

[FLAG] THE FUND IS SUBJECT TO MANAGER RISK, WHICH IS THE CHANCE THAT THE ADVISER
     WILL DO A POOR JOB OF SELECTING STOCKS AND BONDS.

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                                PLAIN TALK ABOUT
                                 CREDIT QUALITY
A bond's credit quality  depends on the issuer's  ability to pay interest on the
bond and,  ultimately,  to repay the  debt.  The lower the  rating by one of the
independent  bond-rating  agencies (for example,  Moody's or Standard & Poor's),
the greater  the chance (in the rating  agency's  opinion)  that the bond issuer
will default, or fail to meet its payment  obligations.  All things being equal,
the lower a bond's credit  rating,  the higher its yield should be to compensate
investors for assuming  additional  risk. Bonds rated in one of the four highest
ratings  categories are considered  "investment  grade." The Fund's Statement of
Additional  Information  includes a detailed  description  of the  credit-rating
scales used by major, independent bond-rating agencies.
- --------------------------------------------------------------------------------

STOCKS
Wellington  Management  uses extensive  research to find what it considers to be
undervalued stocks of established,  large- and medium-size companies. Wellington
Management considers a stock to be undervalued if company earnings, or potential
earnings,  are not fully  reflected in the stock's share price.  In other words,
the current  market  prices of these large- and mid-cap  stocks may be less than
what the adviser thinks they should be worth.
     The  adviser's  goal is to identify and purchase  these  securities  before
their value is  recognized by other  investors.  The adviser  emphasizes  stocks
that, on average,  provide a higher level of dividend  income than stocks in the
overall market generally  provide.  By adhering to this stock selection strategy
and by  investing in a wide variety of  companies  and  industries,  the adviser
expects to moderate overall risk.

[FLAG] THE FUND IS SUBJECT TO  INVESTMENT  STYLE RISK,  WHICH IS THE CHANCE THAT
     RETURNS FROM LARGE- AND MID-CAPITALIZATION  VALUE STOCKS WILL TRAIL RETURNS
     FROM OTHER ASSET  CLASSES OR THE OVERALL STOCK  MARKET.  AS A GROUP,  VALUE
     STOCKS TEND TO GO THROUGH  CYCLES OF DOING  BETTER--OR  WORSE--THAN  COMMON
     STOCKS IN GENERAL.  THESE PERIODS HAVE, IN THE PAST,  LASTED FOR AS LONG AS
     SEVERAL YEARS.

     As of November 30, 1999, the fund had invested 16% of net assets in its top
ten stock holdings.

BONDS
Wellington  Management selects high-quality bonds that it believes will generate
a high and sustainable  level of income.  These bonds may include  intermediate-
and long-term corporate , U.S. Treasury, government agency, mortgage-backed, and
asset-backed  bonds. To generate a relatively  stable stream of interest income,
the adviser does not generally make large adjustments in the average maturity of
the Fund's bond holdings in anticipation of changes in interest rates.
     A  breakdown  of the Fund's  bond  holdings  (which  amounted to 34% of the
Fund's net assets) as of November 30, 1999, follows:
<PAGE>

                                                                               9

- --------------------------------------------------------------------------------
                                                    PERCENTAGE OF
TYPE OF BOND                                    FUND'S BOND HOLDINGS
- --------------------------------------------------------------------------------
Corporate                                               72%
U.S. Treasury and government agency                     10.5
Foreign issuers                                         10.9
Other                                                    6.6
- --------------------------------------------------------------------------------

[FLAG] THE FUND IS SUBJECT,  TO A LIMITED EXTENT,  TO CREDIT RISK,  WHICH IS THE
     CHANCE THAT A BOND  ISSUER WILL FAIL TO PAY  INTEREST  AND  PRINCIPAL  IN A
     TIMELY MANNER.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                 TYPES OF BONDS
Bonds are issued (sold) by many sources: Corporations issue corporate bonds; the
federal  government  issues  U.S.  Treasury  bonds;   agencies  of  the  federal
government  issue agency bonds;  and mortgage  holders  issue  "mortgage-backed"
pass-through  certificates  such as those of the  Government  National  Mortgage
Association  (GNMAs).  Each  issuer is  responsible  for paying  back the bond's
initial value as well as periodic interest payments.
- --------------------------------------------------------------------------------

     Wellington  Management purchases bonds that are primarily  investment-grade
quality--that  is,  bonds  that  are  rated at least  Baa by  Moody's  Investors
Service,   Inc.,  or  BBB  by  Standard  &  Poor's   Corporation.   The  average
dollar-weighted  quality of bonds held by the Fund, as of November 30, 1999, was
Aa3, according to Moody's.
     Timely  payment of principal and interest on U.S.  Treasury bonds is always
guaranteed  by the full faith and credit of the U.S.  government;  many (but not
all) agency bonds have the same  guarantee.  However,  these  guarantees  do not
protect  against  fluctuations  in the  bonds'  prices.  In other  words,  while
Treasury and agency bonds enjoy the highest credit ratings,  their  prices--like
the prices of other bonds--will fluctuate with changes in interest rates.

TURNOVER RATE
Although the Fund  generally  seeks to invest for the long term,  it retains the
right to sell  securities  regardless of how long the securities have been held.
It is not expected that the Fund's  turnover rate will exceed 50% in the future.
(A turnover rate of 100% would occur, for example, if the Fund sold and replaced
securities valued at 100% of its net assets within a one-year period.)
<PAGE>

10

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                                PLAIN TALK ABOUT
                                  TURNOVER RATE
Before  investing in a mutual fund,  you should review its turnover  rate.  This
gives an  indication  of how  transaction  costs could affect the fund's  future
returns.  In general,  the greater the volume of buying and selling by the fund,
the greater the impact that brokerage  commissions and other  transaction  costs
will have on its return. Also, funds with high turnover rates may be more likely
to generate  capital gains that must be  distributed to  shareholders  as income
subject to taxes.  As of November 30, 1999,  the average  turnover  rate for all
balanced funds was approximately 85%, according to Morningstar, Inc.
- --------------------------------------------------------------------------------

OTHER INVESTMENT POLICIES AND RISKS
Besides investing in stocks of large- and medium-size companies and high-quality
intermediate-  and  long-term  bonds,  the  Fund may  follow  a number  of other
investment policies to achieve its objective.
     Although  the  Fund  typically  does not make  significant  investments  in
securities of companies  based outside the United States,  it reserves the right
to invest up to 20% of its assets in foreign  stocks  traded in U.S.  or foreign
markets.  To the extent that it owns foreign stocks,  the Fund is subject to (1)
country  risk,  which  is the  chance  that  political  events  (such as a war),
financial problems (such as government  default),  or natural disasters (such as
an  earthquake)  will weaken a country's  economy and cause  investments in that
country to lose money; and (2) currency risk, which is the chance that Americans
investing  abroad  could lose  money  because of a rise in the value of the U.S.
dollar versus foreign currencies.  The Fund will also invest to a limited extent
in U.S. dollar-denominated foreign bonds which are subject to country risk.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                   DERIVATIVES
A derivative is a financial contract whose value is based on (or "derived" from)
a  traditional  security  (such  as a stock  or a  bond),  an  asset  (such as a
commodity like gold), or a market index (such as the S&P 500 Index). Futures and
options are derivatives  that have been trading on regulated  exchanges for more
than two decades.  These  "traditional"  derivatives are standardized  contracts
that can easily be bought and sold,  and whose market values are  determined and
published  daily. It is these  characteristics  that  differentiate  futures and
options from the relatively new types of derivatives. If used for speculation or
as leveraged investments, derivatives can carry considerable risks.
- --------------------------------------------------------------------------------

     The Fund may also invest,  to a limited extent, in stock and bond (interest
rate) futures and options contracts, which are traditional types of derivatives.
The Fund may also  invest  modestly  in  less-risky  classes  of  collateralized
mortgage obligations (CMOs).

     Losses (or gains) involving futures can sometimes be  substantial--in  part
because a relatively small price movement in a futures contract may result in an
immediate  and  substantial  loss (or gain)  for a fund.  This Fund will not use
futures for speculative  purposes or as leveraged  investments  that magnify the
gains or losses of an investment.  The Fund's obligation to purchase  securities
under futures contracts will not exceed 20% of its total assets.

<PAGE>

                                                                              11

     The reasons for which the Fund invests in futures and options are:
- -    To keep cash on hand to meet  shareholder  redemptions or other needs while
     simulating full investment in stocks and bonds.
- -    To reduce the Fund's  transaction costs or add value when these instruments
     are favorably priced.
- -    To fine tune the Fund's investment  strategy--for instance, by reducing the
     effective  maturity  or  duration  of  the  Fund's  bond  holdings--without
     transacting in actual securities.
     The Fund may temporarily  depart from its normal  investment  policies--for
instance,   by  investing   substantially  in  cash  reserves--in   response  to
extraordinary market, economic, political, or other conditions. In doing so, the
Fund may succeed in avoiding losses but otherwise fail to achieve its investment
objective.


THE FUND AND VANGUARD

The Fund is a member of The Vanguard  Group, a family of more than 35 investment
companies  with more than 100 funds holding assets worth more than $530 billion.
All of the  Vanguard  funds  share  in the  expenses  associated  with  business
operations, such as personnel, office space, equipment, and advertising.
     Vanguard  also  provides   marketing   services  to  the  funds.   Although
shareholders do not pay sales commissions or 12b-1  distribution fees, each fund
pays its allocated share of The Vanguard Group's marketing costs.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                      VANGUARD'S UNIQUE CORPORATE STRUCTURE
The Vanguard Group is truly a MUTUAL mutual fund company. It is owned jointly by
the funds it oversees and thus  indirectly by the  shareholders  in those funds.
Most other mutual funds are operated by for-profit management companies that may
be owned by one person,  by a group of individuals,  or by investors who own the
management  company's stock. By contrast,  Vanguard  provides its services on an
"at-cost"  basis,  and the funds' expense  ratios  reflect only these costs.  No
separate  management  company reaps profits or absorbs losses from operating the
funds.
- --------------------------------------------------------------------------------


INVESTMENT ADVISER

The Fund employs Wellington Management Company, LLP (Wellington Management),  75
State Street, Boston, MA 02109, as its investment adviser. Wellington Management
manages the Fund  subject to the  control of the  Trustees  and  officers of the
Fund.
     Wellington  Management's advisory fee is paid quarterly.  This fee is based
on certain  annual  percentage  rates  applied to the Fund's  average  month-end
assets for each quarter.
     In  addition,   Wellington   Management's  advisory  fee  is  increased  or
decreased,  based on the  cumulative  investment  performance of the Fund over a
trailing  36-month  period as compared with the  cumulative  total return of the
Composite Index over the same period.  This Index is a market  benchmark that is
made up of the S&P 500 Index (65% of the Composite Index) and beginning March 1,
2000 the Lehman Brothers  Corporate A or Better Bond Index (35% of the Composite
Index). Under the fee schedule, the base fee may be increased or decreased by up
to 30%.
<PAGE>

12

     For the fiscal year ended November 30, 1999, the net fee paid to Wellington
Management  represented an effective  annual rate of 0.04% of the Fund's average
net assets.
     The Fund has authorized  Wellington Management to choose brokers or dealers
to handle the purchase and sale of securities  for the Fund, and to get the best
available price and most favorable  execution from these brokers with respect to
all transactions.
     In the interest of obtaining better execution of a transaction,  Wellington
Management  may choose brokers who charge higher  commissions.  If more than one
broker can obtain the best  available  price and most  favorable  execution of a
transaction, then Wellington Management is authorized to choose a broker who, in
addition  to  executing  the  transaction,  will  provide  research  services to
Wellington  Management  or the  Fund.  Also,  the  Fund  may  direct  Wellington
Management to use a particular  broker for certain  transactions in exchange for
commission rebates or research services provided to the Fund.
     The Board of Trustees may, without prior approval from shareholders, change
the terms of an advisory agreement or hire a new investment adviser--either as a
replacement for an existing adviser or as an additional adviser. Any significant
change in the Fund's advisory  arrangements will be communicated to shareholders
in writing. In addition, as the Fund's sponsor and overall manager, The Vanguard
Group may provide investment advisory services to the Fund, on an at-cost basis,
at any time.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                               THE FUND'S ADVISER

Wellington  Management  Company,  LLP  (Wellington  Management) is an investment
advisory  firm founded in 1928. As of November 30, 1999,  Wellington  Management
managed  more than $226.5  billion in stock and bond  portfolios,  including  15
Vanguard funds. The individuals  responsible for overseeing  Vanguard Wellington
Fund are:

ERNST H. VON  METZSCH,  CFA,  Senior Vice  President  and partner of  Wellington
Management;  has worked in investment  management  since 1970;  with  Wellington
Management since 1973; has managed portfolio  investments since 1984; M.Sc., The
University of Leiden, The Netherlands; Ph.D., Harvard University.

PAUL D. KAPLAN, Senior Vice President and partner of Wellington Management;  has
worked in investment  management  since 1974; with Wellington  Management  since
1978;  has managed  the bond  portion of the Fund since  1994;  B.S.,  Dickinson
College;  M.S.,  The Sloan  School of  Management,  Massachusetts  Institute  of
Technology.
- --------------------------------------------------------------------------------


DIVIDENDS, CAPITAL GAINS, AND TAXES

FUND DISTRIBUTIONS
The Fund  distributes to shareholders  virtually all of its net income (interest
and dividends,  less  expenses),  as well as any capital gains realized from the
sale of its holdings. Income dividends generally are distributed in March, June,
September,  and  December;   capital  gains  distributions  generally  occur  in
December.  You can receive distributions of income dividends or capital gains in
cash, or you can have them automatically reinvested in more shares of the Fund.
<PAGE>

                                                                              13

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                  DISTRIBUTIONS
As a  shareholder,  you are  entitled  to your share of the fund's  income  from
interest and dividends, and gains from the sale of investments. You receive such
earnings as either an income  dividend or a capital gains  distribution.  Income
dividends come from both the dividends that the fund earns from its holdings and
the  interest it receives  from its money market and bond  investments.  Capital
gains are realized  whenever the fund sells securities for higher prices than it
paid for them. These capital gains are either short-term or long-term depending,
on whether  the fund held the  securities  for one year or less or more than one
year.
- --------------------------------------------------------------------------------

BASIC TAX POINTS
Vanguard will send you a statement  each year showing the tax status of all your
distributions.  In addition,  taxable investors should be aware of the following
basic tax points:
- -    Distributions are taxable to you for federal income tax purposes whether or
     not you reinvest these amounts in additional Fund shares.
- -    Distributions   declared  in  December--if  paid  to  you  by  the  end  of
     January--are  taxable  for  federal  income tax  purposes as if received in
     December.
- -    Any dividends and short-term  capital gains that you receive are taxable to
     you as ordinary income for federal income tax purposes.
- -    Any  distributions  of net  long-term  capital  gains are taxable to you as
     long-term capital gains for federal income tax purposes, no matter how long
     you've owned shares in the Fund.
- -    Capital gains  distributions  may vary  considerably from year to year as a
     result of the Fund's normal investment activities and cash flows.
- -    A sale or exchange of Fund shares is a taxable  event.  This means that you
     may have a capital gain to report as income, or a capital loss to report as
     a deduction, when you complete your federal income tax return.

- -    Dividend and capital gains  distributions that you receive, as well as your
     gains or losses from any sale or exchange of Fund shares, may be subject to
     state and local income taxes.


GENERAL INFORMATION
BACKUP  WITHHOLDING.   By  law,  Vanguard  must  withhold  31%  of  any  taxable
distributions or redemptions from your account if you do not:
- -    provide us with your correct taxpayer identification number;
- -    certify that the taxpayer identification number is correct; and
- -    confirm that you are not subject to backup withholding.
Similarly,  Vanguard  must withhold from your account if the IRS instructs us to
do so.
FOREIGN  INVESTORS.  The Vanguard funds  generally do not offer their shares for
sale outside of the United States.  Foreign  investors should be aware that U.S.
withholding and estate taxes may apply to any investments in Vanguard funds.
INVALID  ADDRESSES.  If a dividend or capital gains distribution check mailed to
your address of record is returned as undeliverable, Vanguard will automatically
reinvest  all future  distributions  until you  provide us with a valid  mailing
address.
TAX CONSEQUENCES.  This prospectus provides general tax information only. If you
are investing through a tax-deferred retirement account, such as an IRA, special
tax rules apply. Please consult your tax adviser for detailed  information about
a fund's tax consequences for you.
<PAGE>

14

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                               "BUYING A DIVIDEND"
Unless you are investing through a tax-deferred  retirement  account (such as an
IRA),  it is not to your  advantage  to buy shares of a fund  shortly  before it
makes a  distribution,  because  doing so can cost you money in  taxes.  This is
known as "buying a dividend."  For example:  on December 15, you invest  $5,000,
buying 250 shares for $20 each. If the fund pays a distribution  of $1 per share
on December 16, its share price would drop to $19 (not counting  market change).
You still have only $5,000 (250 shares x $19 = $4,750 in share  value,  plus 250
shares x $1 = $250 in  distributions),  but you owe tax on the $250 distribution
you  received--even  if you  reinvest  it in more  shares.  To avoid  "buying  a
dividend," check a fund's distribution schedule before you invest.
- --------------------------------------------------------------------------------


SHARE PRICE

The Fund's share price,  called its net asset value,  or NAV, is calculated each
business day after the close of regular  trading on the New York Stock  Exchange
(the NAV is not  calculated  on  holidays  or other  days when the  Exchange  is
closed).  Net asset  value per share is computed by adding up the total value of
the Fund's  investments  and other assets,  subtracting  any of its  liabilities
(debts), and then dividing by the number of Fund shares outstanding:

                          TOTAL ASSETS - LIABILITIES
     NET ASSET VALUE =  -------------------------------
                         NUMBER OF SHARES OUTSTANDING

     Knowing the daily net asset value is useful to you as a shareholder because
it indicates the current value of your investment. The Fund's NAV, multiplied by
the  number of  shares  you own,  gives you the  dollar  amount  you would  have
received had you sold all of your shares back to the Fund that day.
     A NOTE ON PRICING:  The Fund's  investments  will be priced at their market
value when market  quotations are readily  available.  When these quotations are
not  readily  available,  investments  will  be  priced  at  their  fair  value,
calculated according to procedures adopted by the Fund's Board of Trustees.
     The Fund's  share price can be found  daily in the mutual fund  listings of
most major newspapers under the heading "Vanguard  Funds." Different  newspapers
use different abbreviations of the Fund's name, but the most common is WELLTN.
<PAGE>

                                                                              15

FINANCIAL HIGHLIGHTS

The following financial  highlights table is intended to help you understand the
Fund's financial  performance for the past five years,  and certain  information
reflects  financial  results for a single Fund share.  The total  returns in the
table represent the rate that an investor would have earned or lost each year on
an investment  in the Fund  (assuming  reinvestment  of all dividend and capital
gains  distributions).  This  information  has been derived  from the  financial
statements audited by PricewaterhouseCoopers LLP, independent accountants, whose
report--along  with the Fund's financial  statements--is  included in the Fund's
most recent annual report to  shareholders.  You may have the annual report sent
to you without charge by contacting Vanguard.

- --------------------------------------------------------------------------------
                                              VANGUARD WELLINGTON FUND
                                               YEAR ENDED NOVEMBER 30,
                                       -----------------------------------------
                                        1999     1998     1997     1996    1995
- --------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF YEAR    $32.29   $31.05   $28.34   $24.57  $19.33
- --------------------------------------------------------------------------------
INVESTMENT OPERATIONS
 Net Investment Income                  1.13     1.13     1.11     1.02     .96
 Net Realized and Unrealized Gain
   (Loss) on Investments               (0.14)    2.86     3.77     4.00    5.19
                                       -----------------------------------------
   Total from Investment Operations     0.99     3.99     4.88     5.02    6.15
                                       -----------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment Income  (1.22)   (1.18)   (1.06)    (.97)   (.88)
 Distributions from Realized Capital
   Gains                               (2.44)   (1.57)   (1.11)    (.28)   (.03)
                                       -----------------------------------------
   Total Distributions                 (3.66)   (2.75)   (2.17)   (1.25)   (.91)
- --------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR          $29.62   $32.29   $31.05   $28.34  $24.57
================================================================================
TOTAL RETURN                           3.58%   13.84%   18.60%   21.26%  32.70%
================================================================================
RATIOS/SUPPLEMENTAL DATA
 Net Assets, End of Year (Millions)  $25,846  $25,829  $21,340  $16,505 $12,333
 Ratio of Total Expenses to
   Average Net Assets                  0.30%    0.31%    0.29%    0.31%   0.33%
 Ratio of Net Investment Income to
   Average Net Assets                  3.74%    3.68%    3.97%    4.08%   4.37%
 Turnover Rate                           22%      29%      27%      30%     24%
================================================================================
<PAGE>

16

FINANCIAL HIGHLIGHTS (CONTINUED)

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                   HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Fund began  fiscal 1999 with a net asset value  (price) of $32.29 per share.
During  the  year,  the Fund  earned  $1.13  per share  from  investment  income
(interest and dividends). There was a decline of $0.14 per share in the value of
investments held or sold by the Fund.

Shareholders  received $3.66 per share in the form of dividend and capital gains
distributions.  A portion of each year's  distributions  may come from the prior
year's income or capital gains.

The  earnings  ($0.99  per  share)  minus the  distributions  ($3.66  per share)
resulted in a share price of $29.62 at the end of the year.  This was a decrease
of $2.67 per share (from  $32.29 at the  beginning  of the year to $29.62 at the
end of the year).  For a shareholder  who  reinvested the  distributions  in the
purchase of more shares, the total return from the Fund was 3.58% for the year.

As of November 30, 1999, the Fund had $25.8 billion in net assets. For the year,
its  expense  ratio was 0.30%  ($3.00  per  $1,000 of net  assets);  and its net
investment  income  amounted to 3.74% of its  average  net  assets.  It sold and
replaced securities valued at 22% of its net assets.
- --------------------------------------------------------------------------------

"Standard & Poor's(R),"  "S&P(R),"  "S&P  500(R),"  "Standard & Poor's 500," and
"500" are trademarks of The McGraw-Hill Companies, Inc.
<PAGE>

                                                                              17

- --------------------------------------------------------------------------------
INVESTING WITH VANGUARD

Are you looking for the most  convenient  way to open or add money to a Vanguard
account?  Obtain instant access to fund information?  Establish an account for a
minor child or for your retirement savings?
     Vanguard  can help.  Our goal is to make it easy and pleasant for you to do
business with us.
     The following  sections of the prospectus briefly explain the many services
we offer.  Booklets providing detailed information are available on the services
marked with a [BOOKLET]. Please call us to request copies.
- --------------------------------------------------------------------------------


SERVICES AND ACCOUNT FEATURES

Vanguard  offers many services that make it convenient to buy, sell, or exchange
shares, or to obtain fund or account information.
- --------------------------------------------------------------------------------
TELEPHONE REDEMPTIONS (SALES AND EXCHANGES)
Automatically set up for this Fund unless you notify us otherwise.
- --------------------------------------------------------------------------------
VANGUARD(R) DIRECT DEPOSIT SERVICE [BOOKLET]
Automatic  method  for  depositing  your  paycheck  or U.S.  government  payment
(including Social Security and government pension checks) into your account.
- --------------------------------------------------------------------------------
VANGUARD(R) AUTOMATIC EXCHANGE SERVICE [BOOKLET]
Automatic  method for  moving a fixed  amount of money  from one  Vanguard  fund
account to another.
- --------------------------------------------------------------------------------
VANGUARD FUND EXPRESS(R) [BOOKLET]
Electronic  method for buying or selling shares.  You can transfer money between
your  Vanguard  fund account and an account at your bank,  savings and loan,  or
credit union on a systematic schedule or whenever you wish.
- --------------------------------------------------------------------------------
VANGUARD DIVIDEND EXPRESS(TM) [BOOKLET]
Electronic method for transferring  dividend and/or capital gains  distributions
directly  from your  Vanguard  fund account to your bank,  savings and loan,  or
credit union account.
- --------------------------------------------------------------------------------
VANGUARD TELE-ACCOUNT(R) 1-800-662-6273 (ON-BOARD) [BOOKLET]
Toll-free  24-hour access to Vanguard fund and account  information--as  well as
some  transactions--by  using any touch-tone phone.  Tele-Account provides total
return,  share price, price change, and yield quotations for all Vanguard funds;
gives your account balances and history (e.g., last transaction, latest dividend
distribution);  and  allows  you to sell or  exchange  shares  to and from  most
Vanguard funds.
- --------------------------------------------------------------------------------
ACCESS VANGUARD(TM) www.vanguard.com [COMPUTER]
You can use your  personal  computer to perform  certain  transactions  for most
Vanguard  funds by accessing our website.  To establish  this service,  you must
register  through our website.  We will then mail you an account access password
that  allows  you  to  process  the  following   financial  and   administrative
transactions online:
- -    Open a new account.*
- -    Buy, sell, or exchange shares of most funds.
- -    Change your name/address.
<PAGE>

18

- -    Add/change fund options (including dividend options, Vanguard Fund Express,
     bank instructions,  checkwriting, and Vanguard Automatic Exchange Service).
     (Some  restrictions may apply.) Please call our Client Services  Department
     for assistance.

*Only current Vanguard shareholders can open a new account online, by exchanging
shares from other existing Vanguard accounts.
- --------------------------------------------------------------------------------
INVESTOR INFORMATION DEPARTMENT: 1-800-662-7447 (SHIP) TEXT TELEPHONE:
1-800-952-3335
Call  Vanguard for  information  on our funds,  fund  services,  and  retirement
accounts, and to request literature.
- --------------------------------------------------------------------------------
CLIENT SERVICES DEPARTMENT: 1-800-662-2739 (CREW) TEXT TELEPHONE: 1-800-749-7273
Call Vanguard for information on your account, account transactions, and account
statements.
- --------------------------------------------------------------------------------
SERVICES FOR CLIENTS OF VANGUARD'S INSTITUTIONAL DIVISION: 1-888-809-8102
Vanguard's  Institutional  Division offers a variety of specialized services for
large  institutional   investors,   including  the  ability  to  effect  account
transactions through private electronic networks and third-party recordkeepers.
- --------------------------------------------------------------------------------


TYPES OF ACCOUNTS

Individuals and institutions can establish a variety of accounts with Vanguard.
- --------------------------------------------------------------------------------
FOR ONE OR MORE PEOPLE
Open an account in the name of one (individual) or more (joint tenants) people.
- --------------------------------------------------------------------------------
FOR HOLDING PERSONAL TRUST ASSETS [BOOKLET]
Invest assets held in an existing personal trust.
- --------------------------------------------------------------------------------
FOR INDIVIDUAL RETIREMENT ACCOUNTS [BOOKLET]
Open a  traditional  IRA account or a Roth IRA  account.  Eligibility  and other
requirements  are  established  by federal law and  Vanguard  custodial  account
agreements. For more information, please call 1-800-662-7447 (SHIP).
- --------------------------------------------------------------------------------
FOR AN ORGANIZATION [BOOKLET]
Open an account as a corporation,  partnership,  endowment, foundation, or other
entity.
- --------------------------------------------------------------------------------
FOR THIRD-PARTY TRUSTEE RETIREMENT INVESTMENTS
Open an account as a retirement trust or plan based on an existing  corporate or
institutional  plan.  These  accounts  are  established  by the  trustee  of the
existing plan.
- --------------------------------------------------------------------------------
VANGUARD PROTOTYPE PLANS
Open a  variety  of  retirement  accounts  using  Vanguard  prototype  plans for
individuals,  sole proprietorships,  and small businesses. For more information,
please call 1-800-662-2003.
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
A NOTE ON INVESTING WITH VANGUARD THROUGH OTHER FIRMS
You may purchase or sell Fund shares through a financial  intermediary such as a
bank,  broker,  or investment  adviser.  If you invest with Vanguard  through an
intermediary,  please read that firm's program  materials  carefully to learn of
any  special  rules  that may apply.  For  example,  special  terms may apply to
additional service features, fees, or other policies.  Consult your intermediary
to determine when your order will be priced.
- --------------------------------------------------------------------------------
<PAGE>

                                                                              19

BUYING SHARES

You buy your shares at the Fund's next-determined net asset value after Vanguard
receives your request.  As long as your request is received  before the close of
trading on the New York Stock Exchange,  generally 4 p.m. Eastern time, you will
buy your shares at that day's net asset value.
- --------------------------------------------------------------------------------
MINIMUM INVESTMENT TO . . .
open a new account
$3,000 (regular account); $1,000 (traditional IRAs and Roth IRAs).

add to an existing account
$100 by mail or exchange; $1,000 by wire.
- --------------------------------------------------------------------------------
A NOTE ON LOW BALANCES
The Fund  reserves  the  right to close any  nonretirement  fund  account  whose
balance falls below the minimum initial  investment.  The Fund will deduct a $10
annual fee in June if your  nonretirement  account balance at that time is below
$2,500.  The low balance fee is waived for investors who have aggregate Vanguard
account assets of $50,000 or more.
- --------------------------------------------------------------------------------
BY MAIL TO . . . [ENVELOPE]
open a new account
Complete and sign the account registration form and enclose your check.

add to an existing account
Mail your check with an  Invest-By-Mail  form  detached  from your  confirmation
statement to the address listed on the form. Please do not alter  Invest-By-Mail
forms, since they are fund- and account-specific.

Make your check payable to: The Vanguard Group-21
All  purchases  must be made in U.S.  dollars,  and checks must be drawn on U.S.
banks.

First-class mail to:                    Express or Registered mail to:
The Vanguard Group                      The Vanguard Group
P.O. Box 1110                           455 Devon Park Drive
Valley Forge, PA 19482-1110             Wayne, PA 19087-1815

For clients of Vanguard's Institutional Division . . .

First-class mail to:                    Express or Registered mail to:
The Vanguard Group                      The Vanguard Group
P.O. Box 2900                           455 Devon Park Drive
Valley Forge, PA 19482-2900             Wayne, PA 19087-1815
- --------------------------------------------------------------------------------
IMPORTANT  NOTE:  To prevent  check fraud,  Vanguard will not accept checks made
payable to third parties.
- --------------------------------------------------------------------------------
BY TELEPHONE TO . . . [TELEPHONE]
open a new account
Call Vanguard  Tele-Account*  24 hours a day--or Client Services during business
hours--to exchange from another Vanguard fund account with the same registration
(name, address,  taxpayer  identification  number, and account type). (Note that
some restrictions apply to index fund accounts.)
<PAGE>

20

add to an existing account
Call Vanguard  Tele-Account*  24 hours a day--or Client Services during business
hours--to exchange from another Vanguard fund account with the same registration
(name, address,  taxpayer  identification  number, and account type). (Note that
some restrictions  apply to index fund accounts.) Use Vanguard Fund Express (see
"Services and Account Features") to transfer assets from your bank account. Call
Client Services before your first use to verify that this option is available.

Vanguard Tele-Account                   Client Services
1-800-662-6273                          1-800-662-2739


*You must obtain a Personal  Identification Number (PIN) through Tele-Account at
least seven days before you request your first exchange.

- --------------------------------------------------------------------------------
IMPORTANT  NOTE:  Once  you  have  initiated  a  telephone   transaction  and  a
confirmation  number has been assigned,  the transaction  cannot be revoked.  We
reserve the right to refuse any purchase request.
- --------------------------------------------------------------------------------
BY WIRE TO OPEN A NEW ACCOUNT OR ADD TO AN EXISTING ACCOUNT [WIRE]
Call Client  Services to arrange your wire  transaction.  Wire  transactions  to
retirement  accounts are only  available for asset  transfers and rollovers from
other financial institutions.  Individual IRA contributions will not be accepted
by wire.

Wire to:
FRB ABA 021001088
HSBC Bank USA

For credit to:
Account: 000112046
Vanguard Incoming Wire Account

In favor of:
Vanguard Wellington Fund-21
[Account number, or temporary number for a new account]
[Registered account owner(s)]
[Registered address]
- --------------------------------------------------------------------------------
You can redeem (that is, sell or exchange) shares purchased by check or Vanguard
Fund  Express  at any time.  However,  while  your  redemption  request  will be
processed  at the  next-determined  net asset value after it is  received,  your
redemption  proceeds  will not be available  until  payment for your purchase is
collected, which may take up to ten calendar days.
- --------------------------------------------------------------------------------
A NOTE ON LARGE PURCHASES
It is important that you call Vanguard  before you invest a large dollar amount.
It is our responsibility to consider the interests of all Fund shareholders, and
so we  reserve  the right to refuse any  purchase  that may  disrupt  the Fund's
operation or performance.
- --------------------------------------------------------------------------------
<PAGE>

                                                                              21

REDEEMING SHARES

This section describes how you can redeem--that is, sell or exchange--the Fund's
shares.

When Selling Shares:
- -    Vanguard sends the redemption proceeds to you or a designated third party.*
- -    You can sell all or part of your Fund shares at any time.

*May require a signature guarantee; see footnote on page 24.


When Exchanging Shares:
- -    The redemption proceeds are used to purchase shares of a different Vanguard
     fund.
- -    You must meet the receiving fund's minimum investment requirements.
- -    Vanguard reserves the right to revise or terminate the exchange  privilege,
     limit the amount of an exchange, or reject an exchange at any time, without
     notice.
- -    In  order  to  exchange  into  an  account  with a  different  registration
     (including a different name, address, or taxpayer  identification  number),
     you must include the guaranteed signatures of all current account owners on
     your written instructions.

In both  cases,  your  transaction  will be based on the Fund's  next-determined
share price, subject to any special rules discussed in this prospectus.
- --------------------------------------------------------------------------------
NOTE:  Once a redemption  is initiated  and a  confirmation  number  given,  the
transaction CANNOT be canceled.
- --------------------------------------------------------------------------------

HOW TO REQUEST A REDEMPTION
You can request a  redemption  from your Fund  account in any one of three ways:
online, by telephone, or by mail.
     The Vanguard funds whose shares you cannot  exchange online or by telephone
are VANGUARD U.S.  STOCK INDEX FUNDS,  VANGUARD  BALANCED  INDEX FUND,  VANGUARD
INTERNATIONAL  STOCK INDEX FUNDS,  VANGUARD REIT INDEX FUND, and VANGUARD GROWTH
AND INCOME FUND. These funds do, however,  permit online and telephone exchanges
within  IRAs and other  retirement  accounts.  If you sell shares of these funds
online, a redemption check will be sent to your address of record.
- --------------------------------------------------------------------------------
ONLINE REQUESTS [COMPUTER]
ACCESS VANGUARD at www.vanguard.com
You can use your personal  computer to sell or exchange  shares of most Vanguard
funds by accessing our website.  To establish  this  service,  you must register
through our website.  We will then mail you an account access password that will
enable  you to sell  or  exchange  shares  online  (as  well  as  perform  other
transactions).
- --------------------------------------------------------------------------------
TELEPHONE REQUESTS [TELEPHONE]
All Account Types Except Retirement:
Call Vanguard  Tele-Account  24 hours a day--or Client  Services during business
hours--to  sell or exchange  shares.  You can exchange  shares from this Fund to
open an account in another Vanguard fund or to add to an existing  Vanguard fund
account with an identical registration.
<PAGE>

22

Retirement Accounts:
You can  exchange--but  not  sell--shares  by  calling  Tele-Account  or  Client
Services.

Vanguard Tele-Account                   Client Services
1-800-662-6273                          1-800-662-2739
- --------------------------------------------------------------------------------
SPECIAL  INFORMATION:  We will automatically  establish the telephone redemption
option for your  account,  unless you instruct us  otherwise  in writing.  While
telephone  redemption is easy and convenient,  this account  feature  involves a
risk of loss from  unauthorized or fraudulent  transactions.  Vanguard will take
reasonable  precautions  to protect your  account from fraud.  You should do the
same by keeping your account information  private and immediately  reviewing any
account  statements  that  we  send  to  you.  Make  sure  to  contact  Vanguard
immediately about any transaction you believe to be unauthorized.
- --------------------------------------------------------------------------------
We reserve the right to refuse a telephone redemption if the caller is unable to
provide:
- -    The ten-digit account number.
- -    The name and address exactly as registered on the account.
- -    The primary Social Security or employer identification number as registered
     on the account.

- -    The Personal  Identification  Number (PIN),  if applicable  (for  instance,
     Tele-Account).

     Please note that Vanguard will not be  responsible  for any account  losses
due to telephone  fraud, so long as we have taken reasonable steps to verify the
caller's identity.  If you wish to remove the telephone  redemption feature from
your account, please notify us in writing.
- --------------------------------------------------------------------------------
A NOTE ON UNUSUAL CIRCUMSTANCES
Vanguard  reserves the right to revise or  terminate  the  telephone  redemption
privilege at any time,  without notice.  In addition,  Vanguard can stop selling
shares or postpone  payment at times when the New York Stock  Exchange is closed
or under any emergency  circumstances  as determined by the U.S.  Securities and
Exchange Commission.  If you experience difficulty making a telephone redemption
during  periods  of  drastic  economic  or market  change,  you can send us your
request  by  regular or express  mail.  Follow  the  instructions  on selling or
exchanging shares by mail in this section.
- --------------------------------------------------------------------------------
MAIL REQUESTS [ENVELOPE]
All Account Types Except Retirement:
Send a letter of instruction signed by all registered  account holders.  Include
the fund name and  account  number and (if you are  selling) a dollar  amount or
number  of shares  OR (if you are  exchanging)  the name of the fund you want to
exchange  into and a dollar  amount or number of  shares.  To  exchange  into an
account  with a different  registration  (including a different  name,  address,
taxpayer identification number, or account type), you must provide Vanguard with
written  instructions  that  include the  guaranteed  signatures  of all current
owners of the fund from which you wish to redeem.

Vanguard Retirement Accounts:
For information on how to request distributions from:
- -    Traditional IRAs and Roth IRAs--call Client Services.
- -    SEP-IRAs, SIMPLE IRAs, 403(b)(7) custodial accounts, and Profit-Sharing and
     Money Purchase Pension (Keogh) Plans--call  Individual  Retirement Plans at
     1-800-662-2003.
<PAGE>

                                                                              23

Depending on your account  registration  type,  additional  documentation may be
required.

First-class mail to:                    Express or Registered mail to:
The Vanguard Group                      The Vanguard Group
P.O. Box 1110                           455 Devon Park Drive
Valley Forge, PA 19482-1110             Wayne, PA 19087-1815

For clients of Vanguard's Institutional Division. . .

First-class mail to:                    Express or Registered mail to:
The Vanguard Group                      The Vanguard Group
P.O. Box 2900                           455 Devon Park Drive
Valley Forge, PA 19482-2900             Wayne, PA 19087-1815
- --------------------------------------------------------------------------------
A NOTE ON LARGE REDEMPTIONS
It is important that you call Vanguard  before you redeem a large dollar amount.
It is our  responsibility to consider the interests of all fund shareholders and
so we reserve the right to delay  delivery of your  redemption  proceeds--up  to
seven days--if the amount may disrupt the Fund's operation or performance.
     If you redeem more than  $250,000  worth of Fund  shares  within any 90-day
period,  the  Fund  reserves  the  right  to pay  part or all of the  redemption
proceeds above $250,000  in-kind,  i.e., in securities,  rather than in cash. If
payment is made in-kind,  you may incur  brokerage  commissions  if you elect to
sell the securities for cash.
- --------------------------------------------------------------------------------

OPTIONS FOR REDEMPTION PROCEEDS
You may receive your redemption  proceeds in one of three ways: check,  exchange
to another Vanguard fund, or Fund Express Redemption.
- --------------------------------------------------------------------------------
CHECK REDEMPTIONS
Normally,  Vanguard  will  mail  your  check  within  two  business  days  of  a
redemption.
- --------------------------------------------------------------------------------
EXCHANGE REDEMPTIONS
As described  above, an exchange  involves using the proceeds of your redemption
to purchase shares of another Vanguard fund.
- --------------------------------------------------------------------------------
FUND EXPRESS REDEMPTIONS
Vanguard  will  electronically  transfer  funds to your  pre-linked  checking or
savings account.
- --------------------------------------------------------------------------------

FOR OUR MUTUAL PROTECTION
For your best interests and ours, Vanguard applies these additional requirements
to redemptions:

REQUEST IN "GOOD ORDER"
All redemption requests must be received by Vanguard in "good order." This means
that your request must include:
- -    The Fund name and account number.
- -    The amount of the transaction (in dollars or shares).
- -    Signatures  of all owners  exactly as  registered  on the account (for mail
     requests).
- -    Signature guarantees (if required).*
<PAGE>

24

- -    Any supporting legal documentation that may be required.
- -    Any outstanding certificates representing shares to be redeemed.

*For instance,  a signature guarantee must be provided by all registered account
shareholders  when redemption  proceeds are to be sent to a different  person or
address. A signature  guarantee can be obtained from most commercial and savings
banks,  credit  unions,  and trust  companies,  or members firms of a U.S. stock
exchange.

TRANSACTIONS ARE PROCESSED AT THE NEXT-DETERMINED SHARE PRICE AFTER VANGUARD HAS
RECEIVED ALL REQUIRED INFORMATION.
- --------------------------------------------------------------------------------
LIMITS ON ACCOUNT ACTIVITY
Because  excessive account  transactions can disrupt  management of the Fund and
increase the Fund's costs for all shareholders, Vanguard limits account activity
as follows:
- -    You may make no more than TWO  SUBSTANTIVE  "ROUND TRIPS"  THROUGH THE FUND
     during any 12-month period.
- -    Your round trips through the Fund must be at least 30 days apart.
- -    The Fund may refuse a share purchase at any time, for any reason.
- -    Vanguard may revoke an investor's telephone exchange privilege at any time,
     for any reason.

     A "round trip" is a redemption  from the Fund  followed by a purchase  back
into the Fund.  Also,  a "round trip" covers  transactions  accomplished  by any
combination  of methods,  including  transactions  conducted by check,  wire, or
exchange to/from another Vanguard fund. "Substantive" means a dollar amount that
Vanguard  determines,  in  its  sole  discretion,  could  adversely  affect  the
management of the Fund.
- --------------------------------------------------------------------------------
RETURN YOUR SHARE CERTIFICATES
Any portion of your account represented by share certificates cannot be redeemed
until you return the  certificates  to Vanguard.  Certificates  must be returned
(unsigned),  along with a letter  requesting  the sale or  exchange  you wish to
process, via certified mail to:

The Vanguard Group
455 Devon Park Drive
Wayne, PA 19087-1815
- --------------------------------------------------------------------------------
ALL TRADES ARE FINAL
Vanguard  will not cancel any  transaction  request  (including  any purchase or
redemption)  that we believe to be authentic once the request has been initiated
and a confirmation number assigned.
- --------------------------------------------------------------------------------
UNCASHED CHECKS
Please cash your distribution or redemption  checks promptly.  Vanguard will not
pay interest on uncashed checks.
- --------------------------------------------------------------------------------
<PAGE>

                                                                              25

TRANSFERRING REGISTRATION

You can  transfer  the  registration  of your Fund  shares to  another  owner by
completing a transfer form and sending it to Vanguard.

First-class mail to:                    Express or Registered mail to:
The Vanguard Group                      The Vanguard Group
P.O. Box 1110                           455 Devon Park Drive
Valley Forge, PA 19482-1110             Wayne, PA 19087-1815

For clients of Vanguard's Institutional Division . . .

First-class mail to:                    Express or Registered mail to:
The Vanguard Group                      The Vanguard Group
P.O. Box 2900                           455 Devon Park Drive
Valley Forge, PA 19482-2900             Wayne, PA 19087-1815
- --------------------------------------------------------------------------------


FUND AND ACCOUNT UPDATES

STATEMENTS AND REPORTS
We will send you account and tax  statements to help you keep track of your Fund
account  throughout  the year as well as when you are preparing  your income tax
returns.
     In addition,  you will  receive  financial  reports  about the Fund twice a
year.  These   comprehensive   reports  include  an  assessment  of  the  Fund's
performance  (and a comparison  to its industry  benchmark),  an overview of the
financial  markets,  a  report  from  the  advisers,  and the  Fund's  financial
statements which include a listing of the Fund's holdings.
     To keep  the  Fund's  costs  as low as  possible  (so  that  you and  other
shareholders can keep more of the Fund's investment earnings), Vanguard attempts
to  eliminate  duplicate  mailings  to the same  address.  When two or more Fund
shareholders  have the same last name and address,  we send just one Fund report
to that address--instead of mailing separate reports to each shareholder. If you
want us to send  separate  reports,  notify our Client  Services  Department  at
1-800-662-2739.
- --------------------------------------------------------------------------------
CONFIRMATION STATEMENT
Sent each time you buy,  sell, or exchange  shares;  confirms the trade date and
the amount of your transaction.
- --------------------------------------------------------------------------------
PORTFOLIO SUMMARY [BOOKLET]
Mailed  quarterly for most  accounts;  shows the market value of your account at
the close of the statement period, as well as distributions,  purchases,  sales,
and exchanges for the current calendar year.
- --------------------------------------------------------------------------------
FUND FINANCIAL REPORTS
Mailed in January and July for this Fund.
- --------------------------------------------------------------------------------
TAX STATEMENTS
Generally  mailed in January;  report previous year's dividend and capital gains
distributions,  proceeds from the sale of shares, and distributions from IRAs or
other retirement accounts.
- --------------------------------------------------------------------------------
<PAGE>

26

- --------------------------------------------------------------------------------
AVERAGE COST REVIEW STATEMENT [BOOKLET]
Issued quarterly for most taxable accounts (accompanies your Portfolio Summary);
shows the average  cost of shares that you redeemed  during the  calendar  year,
using only the average cost single category method.
- --------------------------------------------------------------------------------
<PAGE>

                     (THIS PAGE INTENTIONALLY LEFT BLANK.)
<PAGE>

                     (THIS PAGE INTENTIONALLY LEFT BLANK.)
<PAGE>

GLOSSARY OF INVESTMENT TERMS

BALANCED FUND
A mutual fund that seeks to provide some combination of income,  capital growth,
and conservation of capital by investing in stocks,  bonds,  and/or money market
instruments.

BOND
A debt security (IOU) issued by a corporation,  government, or government agency
in exchange for the money you lend it. In most  instances,  the issuer agrees to
pay back the loan by a specific date and to make regular interest payments until
that date.

CAPITAL GAINS DISTRIBUTION
Payment to mutual fund  shareholders  of gains  realized on securities  that the
fund has sold at a profit, minus any realized losses.

COMMON STOCK
A security  representing  ownership  rights in a  corporation.  A stockholder is
entitled  to share in the  company's  profits,  some of which may be paid out as
dividends.

CREDIT QUALITY
A measure of a bond  issuer's  ability to pay interest and principal in a timely
manner.

DIVIDEND INCOME
Payment to  shareholders  of income from  interest or  dividends  generated by a
fund's investments.

EXPENSE RATIO
The  percentage  of a fund's  average net assets used to pay its  expenses.  The
expense ratio  includes  management  fees,  administrative  fees,  and any 12b-1
distribution fees.

FACE VALUE
The amount to be paid at maturity of a bond; the par value or principal.

GROWTH STOCK FUND
A mutual fund that emphasizes stocks of companies believed to have above-average
prospects for growth.  Reflecting market  expectations for superior growth,  the
prices of  growth  stocks  often are  relatively  high in  comparison  with such
factors as revenue, earnings, book value, and dividends.

INVESTMENT GRADE
A bond whose credit quality by independent bond-rating agencies is considered to
be sufficient to ensure timely  payment of principal and interest  under current
economic circumstances.

MATURITY
The date when a bond issuer agrees to repay the bond's principal, or face value,
to the bond's buyer.

NET ASSET VALUE
The market value of a mutual fund's total assets, minus liabilities,  divided by
the  number of shares  outstanding.  The value of a single  share is called  its
share value or share price.

PRICE/EARNINGS (P/E) RATIO
The current share price of a stock,  divided by its per-share earnings (profits)
from the past year. A stock selling for $20, with earnings of $2 per share,  has
a price/earnings ratio of 10.

PRINCIPAL
The amount of money you put into an investment.

TOTAL RETURN
A percentage change,  over a specified time period, in a mutual fund's net asset
value,  with the ending net asset value adjusted to account for the reinvestment
of all distributions of dividends and capital gains.

VALUE STOCK FUND
A mutual fund that  emphasizes  stocks of companies  whose growth  prospects are
generally   regarded  as  subpar  by  the  market.   Reflecting   these   market
expectations,  the  prices  of  value  stocks  typically  are  below-average  in
comparison with such factors as revenue, earnings, book value, and dividends.

VOLATILITY
The  fluctuations  in value of a mutual  fund or other  security.  The greater a
fund's volatility, the wider the fluctuations between its high and low prices.

YIELD
Income  (interest  or  dividends)  earned  by  an  investment,  expressed  as  a
percentage of the investment's price.
<PAGE>

                                                     [SHIP]
                                                     [THE VANGUARD GROUP LOGO]
                                                     Post Office Box 2600
                                                     Valley Forge, PA 19482-2600
FOR MORE INFORMATION
If you'd like more information about
Vanguard Wellington Fund, the
following documents are available
free upon request:

ANNUAL/SEMIANNUAL REPORTS
TO SHAREHOLDERS
Additional information about the
Fund's investments is available in
the Fund's annual and semiannual
reports to shareholders.

STATEMENT OF ADDITIONAL
INFORMATION (SAI)
The SAI provides more detailed
information about the Fund.

The current annual and semiannual
reports and the SAI are
incorporated by reference into
(and are thus legally a part of)
this prospectus.

To receive a free copy of the latest
annual or semiannual report or the
SAI, or to request additional
information about the Fund or other
Vanguard funds, please contact us
as follows:

THE VANGUARD GROUP
INVESTOR INFORMATION
DEPARTMENT
P.O. BOX 2600
VALLEY FORGE, PA 19482-2600

TELEPHONE:
1-800-662-7447 (SHIP)

TEXT TELEPHONE:
1-800-952-3335

WORLD WIDE WEB:
WWW.VANGUARD.COM

If you are a current Fund shareholder
and would like information about
your account, account transactions,
and/or account statements,
please call:

CLIENT SERVICES DEPARTMENT
TELEPHONE:
1-800-662-2739 (CREW)

TEXT TELEPHONE:
1-800-749-7273

INFORMATION PROVIDED BY THE
SECURITIES AND EXCHANGE
COMMISSION (SEC)
You can review and copy
information about the Fund
(including  the SAI) at the SEC's
Public Reference Room in
Washington, DC. To find out more
about this public service, call the
SEC at 1-800-SEC-0330. Reports and
other information about the Fund are
also available on the SEC's website
(www.sec.gov), or you can receive
copies of this information, for a fee,
by writing the Public Reference
Section, Securities and Exchange
Commission, Washington, DC
20549-0102.

Fund's Investment Company Act
file number: 811-121

(C) 2000 The Vanguard Group, Inc.
All rights reserved.
Vanguard Marketing Corporation,
Distributor.

P021N-03/24/2000
<PAGE>

                                                VANGUARD
                                                WELLINGTON(TM)
                                                FUND

                                                Participant Prospectus
                                                March 24, 2000

This prospectus contains
financial data for the
Fund through the
fiscal year ended
November 30, 1999.

                                                [A MEMBER OF
                                                THE VANGUARD GROUP(R)]
<PAGE>

VANGUARD(R) WELLINGTON(TM) FUND
Participant Prospectus
March 24, 2000

A Balanced Mutual Fund

- --------------------------------------------------------------------------------
CONTENTS
- --------------------------------------------------------------------------------
 1 FUND PROFILE                           13 DIVIDENDS, CAPITAL GAINS, AND TAXES

 4 ADDITIONAL INFORMATION                 13 SHARE PRICE

 4 A WORD ABOUT RISK                      14 FINANCIAL HIGHLIGHTS

 4 WHO SHOULD INVEST                      16 INVESTING WITH VANGUARD

 5 PRIMARY INVESTMENT STRATEGIES          17 ACCESSING FUND INFORMATION BY
                                             COMPUTER
11 THE FUND AND VANGUARD
                                          GLOSSARY (inside back cover)
11 INVESTMENT ADVISER
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
WHY READING THIS PROSPECTUS IS IMPORTANT
This  prospectus  explains the  objective,  risks,  and  strategies  of Vanguard
Wellington  Fund.  To  highlight  terms and  concepts  important  to mutual fund
investors,  we have provided "Plain Talk(R)" explanations along the way. Reading
the prospectus will help you to decide whether the Fund is the right  investment
for you. We suggest that you keep it for future reference.
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
IMPORTANT NOTE
This prospectus is intended for participants in employer-sponsored retirement or
savings plans. Another version--for  investors who would like to open a personal
investment account--can be obtained by calling Vanguard at 1-800-662-7447.
- --------------------------------------------------------------------------------


NEITHER  THE  SECURITIES  AND  EXCHANGE  COMMISSION  NOR  ANY  STATE  SECURITIES
COMMISSION HAS APPROVED OR  DISAPPROVED  OF THESE  SECURITIES OR PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
<PAGE>

                                                                               1

FUND PROFILE

The following profile summarizes key features of Vanguard Wellington Fund.

INVESTMENT OBJECTIVE
The Fund seeks to conserve capital and to provide  moderate  long-term growth in
capital and income.

INVESTMENT STRATEGIES
The  Fund  invests  60% to  70%  of its  assets  in  dividend-paying  stocks  of
established,  large and medium-size companies. In choosing these companies,  the
adviser  seeks  those  that  appear  to be  undervalued  but to  have  improving
prospects.  These stocks are commonly referred to as value stocks. The remaining
30% to 40% of assets are invested  primarily in high-quality  intermediate-  and
long-term  corporate  bonds,  with some  exposure to U.S.  Treasury,  government
agency, and mortgage-backed bonds.

PRIMARY RISKS
THE FUND'S TOTAL  RETURN,  LIKE THE PRICES OF STOCKS AND BONDS,  WILL  FLUCTUATE
WITHIN A WIDE  RANGE,  SO AN  INVESTOR  COULD LOSE MONEY OVER SHORT OR EVEN LONG
PERIODS. The Fund is also subject to:
- -    Investment  style risk,  which is the chance that  returns  from large- and
     mid-capitalization value stocks will trail returns from other asset classes
     or the overall stock market.
- -    Interest  rate risk,  which is the chance  that bond  prices  overall  will
     decline  over  short or even long  periods  due to rising  interest  rates.
     Interest  rate risk should be modest for  shorter-term  bond funds and high
     for longer-term bond funds.
- -    Credit  risk,  which is the  chance  that a bond  issuer  will  fail to pay
     interest and  principal  in a timely  manner,  reducing the Fund's  return.
     Credit risk should be low for the Fund.
- -    Manager risk,  which is the chance that poor security  selection will cause
     the Fund to underperform other funds with similar investment objectives.

PERFORMANCE/RISK INFORMATION

The bar chart and table below  provide an indication of the risk of investing in
the Fund. The bar chart shows the Fund's  performance in each calendar year over
a ten-year  period.  The table shows how the Fund's average annual total returns
for one,  five,  and ten calendar  years  compare with those of both the S&P 500
Index, a broad stock market benchmark, and a composite stock/bond index weighted
65% in the S&P 500 Index and 35% in a broad bond market index. Keep in mind that
the Fund's past performance does not indicate how it will perform in the future.

<PAGE>

2

              ----------------------------------------------------
                              ANNUAL TOTAL RETURNS
              ----------------------------------------------------
                                1990        -2.81%
                                1991        23.65%
                                1992         7.93%
                                1993        13.52%
                                1994        -0.49%
                                1995        32.92%
                                1996        16.19%
                                1997        23.23%
                                1998        12.06%
                                1999         4.41%
              ----------------------------------------------------

     During the period shown in the bar chart, the highest return for a calendar
quarter was 12.19%  (quarter  ended June 30,  1997) and the lowest  return for a
quarter was -9.48% (quarter ended September 30, 1990).

- --------------------------------------------------------------------------------
         AVERAGE ANNUAL TOTAL RETURNS FOR YEARS ENDED DECEMBER 31, 1999
- --------------------------------------------------------------------------------
                                    1 YEAR         5 YEARS           10 YEARS
- --------------------------------------------------------------------------------
Vanguard Wellington Fund             4.41%          17.36%            12.55%
S&P 500 Index                       21.04           28.56             18.21
Composite Index*                    10.61           21.39              4.84
- --------------------------------------------------------------------------------
*Prior to March 1, 2000,  weighted  65% in the S&P 500 Index,  35% in the Lehman
Brothers  Long  Corporate  AA or Better  Bond  Index.  Effective  March 1, 2000,
weighted  65% in the S&P 500 Index,  35% in the Lehman  Brothers  Corporate A or
Better Bond Index.
- --------------------------------------------------------------------------------


FEES AND EXPENSES
The following  table  describes the fees and expenses you may pay if you buy and
hold shares of the Fund. The expenses shown under Annual Fund Operating Expenses
are based upon those incurred in the fiscal year ended November 30, 1999.

      SHAREHOLDER FEES (fees paid directly from your investment)
      Sales Charge (Load) Imposed on Purchases:                 None
      Sales Charge (Load) Imposed on Reinvested Dividends:      None
      Redemption Fee:                                           None
      Exchange Fee:                                             None

      ANNUAL FUND OPERATING EXPENSES (expenses deducted from the Fund's assets)
      Management Expenses:                                      0.28%
      12b-1 Distribution Fee:                                   None
      Other Expenses:                                           0.02%
       TOTAL ANNUAL FUND OPERATING EXPENSES:                    0.30%
<PAGE>

                                                                               3

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                  FUND EXPENSES
All mutual funds have operating  expenses.  These  expenses,  which are deducted
from a fund's gross  income,  are expressed as a percentage of the net assets of
the fund.  Vanguard  Wellington  Fund's  expense  ratio in fiscal  year 1999 was
0.30%,  or $3.00 per $1,000 of average net assets.  The average  balanced mutual
fund had  expenses in 1999 of 1.33%,  or $13.30 per $1,000 of average net assets
(derived  from data  provided by Lipper Inc.,  which  reports on the mutual fund
industry).  Management  expenses,  which  are one  part of  operating  expenses,
include investment advisory fees as well as other costs of managing a fund--such
as account maintenance,  reporting,  accounting, legal, and other administrative
expenses.
- --------------------------------------------------------------------------------

     The following example is intended to help you compare the cost of investing
in the Fund with the cost of investing in other mutual funds. It illustrates the
hypothetical  expenses  that you would incur over various  periods if you invest
$10,000 in the Fund.  This example assumes that the Fund provides a return of 5%
a year, and that operating  expenses  remain the same. The results apply whether
or not you redeem your investment at the end of each period.

              ----------------------------------------------------
               1 YEAR       3 YEARS       5 YEARS        10 YEARS
              ----------------------------------------------------
                $31           $97          $169            $381
              ----------------------------------------------------

     THIS  EXAMPLE  SHOULD NOT BE  CONSIDERED  TO REPRESENT  ACTUAL  EXPENSES OR
PERFORMANCE  FROM THE PAST OR FOR THE  FUTURE.  ACTUAL  FUTURE  EXPENSES  MAY BE
HIGHER OR LOWER THAN THOSE SHOWN.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                             THE COSTS OF INVESTING
Costs are an important  consideration in choosing a mutual fund.  That's because
you, as a shareholder,  pay the costs of operating a fund,  plus any transaction
costs  associated with the fund's buying and selling of securities.  These costs
can erode a substantial  portion of the gross income or capital  appreciation  a
fund achieves. Even seemingly small differences in expenses can, over time, have
a dramatic effect on a fund's performance.
- --------------------------------------------------------------------------------
<PAGE>

4

- --------------------------------------------------------------------------------
ADDITIONAL INFORMATION

DIVIDENDS AND CAPITAL GAINS                        NEWSPAPER ABBREVIATION
Dividends are distributed quarterly in March,      Welltn
June, September, and December; capital gains, if
any, are distributed annually in December          VANGUARD FUND NUMBER
                                                   021
INVESTMENT ADVISER
Wellington Management Company, LLP, Boston,        CUSIP NUMBER
Mass., since inception                             921935102

INCEPTION DATE                                     TICKER SYMBOL
July 1, 1929                                       VWELX

NET ASSETS AS OF NOVEMBER 30, 1999
$25.8 billion
- --------------------------------------------------------------------------------


- --------------------------------------------------------------------------------
A WORD ABOUT RISK

This  prospectus  describes  risks you would  face as an  investor  in  Vanguard
Wellington  Fund.  It is  important  to keep in mind one of the main  axioms  of
investing: The higher the risk of losing money, the higher the potential reward.
The  reverse,  also,  is  generally  true:  The lower  the  risk,  the lower the
potential  reward.  As you consider an investment  in the Fund,  you should also
take into account your  personal  tolerance  for the daily  fluctuations  of the
stock and bond markets.
     Look for this [FLAG] symbol  throughout the prospectus.  It is used to mark
detailed  information  about  each  type of risk that you  would  confront  as a
shareholder of the Fund.
- --------------------------------------------------------------------------------


WHO SHOULD INVEST

The Fund may be a suitable investment for you if:
- -    You want a simple way to invest in a relatively  fixed percentage of stocks
     and bonds.
- -    You are seeking  moderate  growth of your  capital  over the long  term--at
     least  five  years--but  you  want  to  hold  down  risk  by  investing  in
     established companies and high-quality bonds.
- -    You are seeking moderate current income.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                             COSTS AND MARKET-TIMING
Some   investors  try  to  profit  from   market-timing--switching   money  into
investments  when they  expect  prices to rise,  and taking  money out when they
expect  the  market  to fall.  As money is  shifted  in and out,  a fund  incurs
expenses  for buying and selling  securities.  These costs are borne by all fund
shareholders,  including the long-term  investors who do not generate the costs.
Therefore,  the Fund  discourages  short-term  trading by,  among other  things,
limiting the number of exchanges it permits.
- --------------------------------------------------------------------------------
<PAGE>

                                                                               5

     THE VANGUARD FUNDS DO NOT PERMIT MARKET-TIMING.  DO NOT INVEST IN THIS FUND
IF YOU ARE A MARKET-TIMER.

     The Fund has adopted the following  policies,  among others,  to discourage
short-term trading:
- -    The Fund  reserves  the right to  reject  any  purchase  request--including
     exchanges from other  Vanguard  funds--that it regards as disruptive to the
     efficient  management  of the Fund.  A purchase  request  could be rejected
     because  of the  timing  of the  investment  or  because  of a  history  of
     excessive trading by the investor.
- -    There is a limit on the  number of times you can  exchange  into and out of
     the Fund (see "Exchanges" in the INVESTING WITH VANGUARD section).
- -    The Fund reserves the right to stop offering shares at any time.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                 BALANCED FUNDS
Balanced  funds are  generally  "middle  of the road"  investments  that seek to
provide some  combination  of growth,  income,  and  conservation  of capital by
investing in a mix of stocks,  bonds, and/or money market  instruments.  Because
the prices of stocks  and bonds  often move in  different  directions,  balanced
funds are able to use  rewards  from one type of  investment  to help offset the
risks from another.
- --------------------------------------------------------------------------------


PRIMARY INVESTMENT STRATEGIES

This section explains the strategies that the investment adviser uses in pursuit
of the Fund's objective of conservation of capital and moderate long-term growth
of capital  and  income.  It also  explains  how the  adviser  implements  these
strategies.  In addition, this section discusses several important risks--market
risk,  interest  rate risk,  manager  risk,  investment  style risk,  and credit
risk--faced  by  investors  in the Fund.  The Fund's  Board of  Trustees,  which
oversees the management of the Fund, may change the Fund's investment  objective
or strategies in the interest of shareholders, without a shareholder vote.

MARKET EXPOSURE

STOCKS
Roughly two-thirds of the Fund's assets are invested in common stocks. At times,
the Fund may also invest in securities that are convertible to common stocks.

[FLAG] THE FUND IS SUBJECT TO STOCK MARKET RISK,  WHICH IS THE CHANCE THAT STOCK
     PRICES OVERALL WILL DECLINE OVER SHORT OR EVEN LONG PERIODS.  STOCK MARKETS
     TEND TO MOVE IN  CYCLES,  WITH  PERIODS  OF RISING  PRICES  AND  PERIODS OF
     FALLING PRICES.

     To illustrate the volatility of stock prices, the following table shows the
best,  worst,  and average total returns for the U.S.  stock market over various
periods as measured by the Standard & Poor's 500 Index,  a widely used barometer
of market  activity.  (Total returns  consist of dividend  income plus change in
market  price.)  Note that the returns  shown do not include the costs of buying
and selling stocks or other expenses that a real-world
<PAGE>

6

investment  portfolio  would incur.  Note,  also,  that the gap between best and
worst tends to narrow over the long term.


- --------------------------------------------------------------------------------
                      U.S. STOCK MARKET RETURNS (1926-1999)
- --------------------------------------------------------------------------------
                                 1 YEAR      5 YEARS      10 YEARS      20 YEARS
- --------------------------------------------------------------------------------
Best                              54.2%       28.6%         19.9%         17.9%
Worst                            -43.1       -12.4          -0.9           3.1
Average                           13.2        11.0          11.1          11.1
- --------------------------------------------------------------------------------


     The table  covers all of the 1-, 5-,  10-,  and 20-year  periods  from 1926
through 1999. You can see, for example,  that while the average return on stocks
for all of the 5-year periods was 11.0%,  returns for individual  5-year periods
ranged  from a -12.4%  average  (from  1928  through  1932) to 28.6%  (from 1995
through 1999).  These average returns reflect past performance on common stocks;
you should not regard them as an  indication  of future  returns from either the
stock market as a whole or this Fund in particular.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                    LARGE-CAP, MID-CAP, AND SMALL-CAP STOCKS
Stocks  of  publicly  traded   companies--and   mutual  funds  that  hold  these
stocks--can be classified by the  companies'  market value,  or  capitalization.
Market  capitalization  changes over time, and there is no "official" definition
of the boundaries of large-,  mid-,  and small-cap  stocks.  Vanguard  generally
defines  large-capitalization  (large-cap)  funds as  those  holding  stocks  of
companies  whose  outstanding  shares have a market value exceeding $12 billion;
mid-cap funds as those holding  stocks of companies  with a market value between
$1 billion and $12  billion;  and  small-cap  funds as those  typically  holding
stocks  of  companies  with a market  value of less  than $1  billion.  Vanguard
periodically reassesses these classifications.
- --------------------------------------------------------------------------------

BONDS
Approximately one-third of the Fund's assets are invested in bonds.

[FLAG] THE FUND IS SUBJECT TO INTEREST RATE RISK,  WHICH IS THE CHANCE THAT BOND
     PRICES  OVERALL  WILL DECLINE OVER SHORT OR EVEN LONG PERIODS DUE TO RISING
     INTEREST RATES.  INTEREST RATE RISK SHOULD BE MODEST FOR SHORTER-TERM  BOND
     FUNDS AND HIGHER FOR LONGER-TERM BOND FUNDS.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                            BONDS AND INTEREST RATES
As a rule,  when  interest  rates rise,  bond prices fall.  The opposite is also
true:  Bond  prices go up when  interest  rates  fall.  Why do bond  prices  and
interest  rates move in opposite  directions?  Let's assume that you hold a bond
offering a 5% yield. A year later,  interest rates are on the rise and bonds are
offered with a 6% yield. With  higher-yielding  bonds available,  you would have
trouble selling your 5% bond for the price you  paid--causing  you to lower your
asking  price.  On the other hand,  if interest  rates were falling and 4% bonds
were  being  offered,  you should be able to sell your 5% bond for more than you
paid.
- --------------------------------------------------------------------------------
<PAGE>

                                                                               7

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                 BOND MATURITIES
A bond is issued with a specific  maturity  date--the date when the bond issuer,
or seller,  must pay back the bond's  initial value (known as its "face value").
Bond maturities generally range from less than one year (short-term) to 30 years
(long-term).  The  longer  a  bond's  maturity,  the more  risk  you,  as a bond
investor,  face as interest  rates  rise--but  also the more  interest you could
receive. Long-term bonds are more suitable for investors willing to take greater
risks in hope of higher yields;  short-term bond investors  should be willing to
accept  lower  yields  in  return  for less  fluctuation  in the  value of their
investment.
- --------------------------------------------------------------------------------

     Although  bonds are often thought to be less risky than stocks,  there have
been periods when bond prices have fallen  significantly  due to rising interest
rates.  For  instance,  prices of  long-term  bonds fell by almost  48%  between
December 1976 and September 1981.
     To illustrate the relationship  between bond prices and interest rates, the
following  table shows the effect of a 1% and a 2% change  (both up and down) in
interest rates on three bonds of different maturities, each with a face value of
$1,000.

- --------------------------------------------------------------------------------
                      HOW INTEREST RATE CHANGES AFFECT THE
                             VALUE OF A $1,000 BOND*
- --------------------------------------------------------------------------------
                              AFTER A 1%   AFTER A 1%   AFTER A 2%    AFTER A 2%
TYPE OF BOND (MATURITY)        INCREASE     DECREASE     INCREASE      DECREASE
- --------------------------------------------------------------------------------
Short-Term (2.5 years)           $978        $1,023        $956          $1,046
Intermediate-Term (10 years)      932         1,074         870           1,156
Long-Term (20 years)              901         1,116         816           1,251
- --------------------------------------------------------------------------------
*Assumes a 7% yield.
- --------------------------------------------------------------------------------

     These figures are for illustrative purposes only and should not be regarded
as an indication  of future  returns from the bond market as a whole or the Fund
in particular.
     Finally,  because stock and bond prices often move in different directions,
the Fund's bond holdings help to dampen--but  not  eliminate--some  of the stock
market volatility  experienced by the Fund. Likewise,  changes in interest rates
may not have as  dramatic  an effect on the Fund as they would on a fund made up
entirely of bonds.

SECURITY SELECTION
Wellington Management Company, LLP (Wellington Management), adviser to the Fund,
invests approximately 60% to 70% of the Fund's assets in dividend-paying  common
stocks  and  the  remaining  30%  to 40% of its  assets  in  high-quality,  U.S.
investment  grade  bonds.  While the mix of stocks and bonds varies from time to
time  depending on the  adviser's  view of economic and market  conditions,  the
stock portion can be expected to represent at least 60% of the Fund's holdings.
     The Fund is run by Wellington  Management  according to traditional methods
of  active  investment  management.  Securities  are  bought  and sold  based on
Wellington Management's judgments about companies and their financial prospects,
and about bond issuers and the general level of interest  rates.  To achieve the
Fund's  objective of  conservation of capital and moderate growth in capital and
income, the adviser follows specific strategies for stock and bond selection.
     The Fund is generally managed without regard to tax ramifications.
<PAGE>

8

[FLAG] THE FUND IS SUBJECT TO MANAGER RISK, WHICH IS THE CHANCE THAT THE ADVISER
     WILL DO A POOR JOB OF SELECTING STOCKS AND BONDS.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                 CREDIT QUALITY
A bond's credit quality  depends on the issuer's  ability to pay interest on the
bond and,  ultimately,  to repay the  debt.  The lower the  rating by one of the
independent  bond-rating  agencies (for example,  Moody's or Standard & Poor's),
the greater  the chance (in the rating  agency's  opinion)  that the bond issuer
will default, or fail to meet its payment  obligations.  All things being equal,
the lower a bond's credit  rating,  the higher its yield should be to compensate
investors for assuming  additional  risk. Bonds rated in one of the four highest
ratings  categories are considered  "investment  grade." The Fund's Statement of
Additional  Information  includes a detailed  description  of the  credit-rating
scales used by major, independent bond-rating agencies.
- --------------------------------------------------------------------------------

STOCKS
Wellington  Management  uses extensive  research to find what it considers to be
undervalued stocks of established,  large- and medium-size companies. Wellington
Management considers a stock to be undervalued if company earnings, or potential
earnings,  are not fully  reflected in the stock's share price.  In other words,
the current  market  prices of these large- and mid-cap  stocks may be less than
what the adviser thinks they should be worth.
     The  adviser's  goal is to identify and purchase  these  securities  before
their value is  recognized by other  investors.  The adviser  emphasizes  stocks
that, on average,  provide a higher level of dividend  income than stocks in the
overall market generally  provide.  By adhering to this stock selection strategy
and by  investing in a wide variety of  companies  and  industries,  the adviser
expects to moderate overall risk.

[FLAG] THE FUND IS SUBJECT TO  INVESTMENT  STYLE RISK,  WHICH IS THE CHANCE THAT
     RETURNS FROM LARGE- AND MID-CAPITALIZATION  VALUE STOCKS WILL TRAIL RETURNS
     FROM OTHER ASSET  CLASSES OR THE OVERALL STOCK  MARKET.  AS A GROUP,  VALUE
     STOCKS TEND TO GO THROUGH  CYCLES OF DOING  BETTER--OR  WORSE--THAN  COMMON
     STOCKS IN GENERAL.  THESE PERIODS HAVE, IN THE PAST,  LASTED FOR AS LONG AS
     SEVERAL YEARS.

     As of November 30, 1999, the fund had invested 16% of net assets in its top
ten stock holdings.

BONDS
Wellington  Management selects high-quality bonds that it believes will generate
a high and sustainable  level of income.  These bonds may include  intermediate-
and long-term corporate, U.S. Treasury, government agency, mortgage-backed,  and
asset-backed  bonds. The average maturity of the bond holdings exceeds 15 years.
To generate a relatively stable stream of interest income,  the adviser does not
generally  make large  adjustments  in the  average  maturity of the Fund's bond
holdings in anticipation of changes in interest rates.
     A  breakdown  of the Fund's  bond  holdings  (which  amounted to 34% of the
Fund's net assets) as of November 30, 1999, follows:
<PAGE>

                                                                               9

- --------------------------------------------------------------------------------
                                                    PERCENTAGE OF
TYPE OF BOND                                    FUND'S BOND HOLDINGS
- --------------------------------------------------------------------------------
Corporate                                               72%
U.S. Treasury and government agency                     10.5
Foreign issuers                                         10.9
Other                                                    6.6
- --------------------------------------------------------------------------------

[FLAG] THE FUND IS SUBJECT,  TO A LIMITED EXTENT,  TO CREDIT RISK,  WHICH IS THE
     CHANCE THAT A BOND  ISSUER WILL FAIL TO PAY  INTEREST  AND  PRINCIPAL  IN A
     TIMELY MANNER.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                 TYPES OF BONDS
Bonds are issued (sold) by many sources: Corporations issue corporate bonds; the
federal  government  issues  U.S.  Treasury  bonds;   agencies  of  the  federal
government  issue agency bonds;  and mortgage  holders  issue  "mortgage-backed"
pass-through  certificates  such as those of the  Government  National  Mortgage
Association  (GNMAs).  Each  issuer is  responsible  for paying  back the bond's
initial value as well as periodic interest payments.
- --------------------------------------------------------------------------------

     Wellington  Management purchases bonds that are primarily  investment-grade
quality--that  is,  bonds  that  are  rated at least  Baa by  Moody's  Investors
Service,   Inc.,  or  BBB  by  Standard  &  Poor's   Corporation.   The  average
dollar-weighted  quality of bonds held by the Fund, as of November 30, 1999, was
Aa3, according to Moody's.
     Timely  payment of principal and interest on U.S.  Treasury bonds is always
guaranteed  by the full faith and credit of the U.S.  government;  many (but not
all) agency bonds have the same  guarantee.  However,  these  guarantees  do not
protect  against  fluctuations  in the  bonds'  prices.  In other  words,  while
Treasury and agency bonds enjoy the highest credit ratings,  their  prices--like
the prices of other bonds--will fluctuate with changes in interest rates.

TURNOVER RATE
Although the Fund  generally  seeks to invest for the long term,  it retains the
right to sell  securities  regardless of how long the securities have been held.
It is not expected that the Fund's  turnover rate will exceed 50% in the future.
(A turnover rate of 100% would occur, for example, if the Fund sold and replaced
securities valued at 100% of its net assets within a one-year period.)
<PAGE>

10

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                  TURNOVER RATE
Before  investing in a mutual fund,  you should review its turnover  rate.  This
gives an  indication  of how  transaction  costs could affect the fund's  future
returns.  In general,  the greater the volume of buying and selling by the fund,
the greater the impact that brokerage  commissions and other  transaction  costs
will have on its return. Also, funds with high turnover rates may be more likely
to generate  capital gains that must be  distributed to  shareholders  as income
subject to taxes.  As of November 30, 1999,  the average  turnover  rate for all
balanced funds was approximately 85%, according to Morningstar, Inc.
- --------------------------------------------------------------------------------

OTHER INVESTMENT POLICIES AND RISKS
Besides investing in stocks of large- and medium-size companies and high-quality
intermediate-  and  long-term  bonds,  the  Fund may  follow  a number  of other
investment policies to achieve its objective.
     Although the Fund  typically does not make  significant  investments in the
securities of companies  based outside the United States,  it reserves the right
to invest up to 20% of its assets in foreign  stocks  traded in U.S.  or foreign
markets.  To the extent that it owns foreign stocks,  the Fund is subject to (1)
country  risk,  which  is the  chance  that  political  events  (such as a war),
financial problems (such as government  default),  or natural disasters (such as
an  earthquake)  will weaken a country's  economy and cause  investments in that
country to lose money; and (2) currency risk, which is the chance that Americans
investing  abroad  could lose  money  because of a rise in the value of the U.S.
dollar versus foreign currencies.  The Fund will also invest to a limited extent
in U.S. dollar-denominated foreign bonds which are subject to country risk.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                   DERIVATIVES
A derivative is a financial contract whose value is based on (or "derived" from)
a  traditional  security  (such  as a stock  or a  bond),  an  asset  (such as a
commodity like gold), or a market index (such as the S&P 500 Index). Futures and
options are derivatives  that have been trading on regulated  exchanges for more
than two decades.  These  "traditional"  derivatives are standardized  contracts
that can easily be bought and sold,  and whose market values are  determined and
published  daily. It is these  characteristics  that  differentiate  futures and
options from the relatively new types of derivatives. If used for speculation or
as leveraged investments, derivatives can carry considerable risks.
- --------------------------------------------------------------------------------

     The Fund may also invest,  to a limited extent, in stock and bond (interest
rate) futures and options contracts, which are traditional types of derivatives.
The Fund may also  invest  modestly  in  less-risky  classes  of  collateralized
mortgage obligations (CMOs).

     Losses (or gains) involving futures can sometimes be  substantial--in  part
because a relatively small price movement in a futures contract may result in an
immediate  and  substantial  loss (or gain)  for a fund.  This Fund will not use
futures for speculative  purposes or as leveraged  investments  that magnify the
gains or losses of an investment.  The Fund's obligation to purchase  securities
under futures contracts will not exceed 20% of its total assets.

<PAGE>

                                                                              11

     The reasons for which the Fund invests in futures and options are:
- -    To keep cash on hand to meet  shareholder  redemptions or other needs while
     simulating full investment in stocks and bonds.
- -    To reduce the Fund's  transaction costs or add value when these instruments
     are favorably priced.
- -    To fine tune the Fund's investment  strategy--for instance, by reducing the
     effective  maturity  or  duration  of  the  Fund's  bond  holdings--without
     transacting in actual securities.
     The Fund may temporarily  depart from its normal  investment  policies--for
instance,   by  investing   substantially  in  cash  reserves--in   response  to
extraordinary market, economic, political, or other conditions. In doing so, the
Fund may succeed in avoiding losses but otherwise fail to achieve its investment
objective.


THE FUND AND VANGUARD

The Fund is a member of The Vanguard  Group, a family of more than 35 investment
companies  with more than 100 funds holding assets worth more than $530 billion.
All of the  Vanguard  funds  share  in the  expenses  associated  with  business
operations, such as personnel, office space, equipment, and advertising.
     Vanguard  also  provides   marketing   services  to  the  funds.   Although
shareholders do not pay sales commissions or 12b-1  distribution fees, each fund
pays its allocated share of The Vanguard Group's marketing costs.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                      VANGUARD'S UNIQUE CORPORATE STRUCTURE
The Vanguard Group is truly a MUTUAL mutual fund company. It is owned jointly by
the funds it oversees and thus  indirectly by the  shareholders  in those funds.
Most other mutual funds are operated by for-profit management companies that may
be owned by one person,  by a group of individuals,  or by investors who own the
management  company's stock. By contrast,  Vanguard  provides its services on an
"at-cost"  basis,  and the funds' expense  ratios  reflect only these costs.  No
separate  management  company reaps profits or absorbs losses from operating the
funds.
- --------------------------------------------------------------------------------


INVESTMENT ADVISER

The Fund employs Wellington Management Company, LLP (Wellington Management),  75
State Street, Boston, MA 02109, as its investment adviser. Wellington Management
manages the Fund  subject to the  control of the  Trustees  and  officers of the
Fund.
     Wellington  Management's advisory fee is paid quarterly.  This fee is based
on certain  annual  percentage  rates  applied to the Fund's  average  month-end
assets for each quarter.
     In  addition,   Wellington   Management's  advisory  fee  is  increased  or
decreased,  based on the  cumulative  investment  performance of the Fund over a
trailing  36-month  period as compared with the  cumulative  total return of the
Composite Index over the same period.  This Index is a market  benchmark that is
made up of the S&P 500 Index (65% of the Composite Index) and beginning March 1,
2000 the Lehman Brothers  Corporate A or Better Bond Index (35% of the Composite
Index). Under the fee schedule, the base fee may be increased or decreased by up
to 30%.
<PAGE>

12

     For the fiscal year ended November 30, 1999, the net fee paid to Wellington
Management  represented an effective  annual rate of 0.04% of the Fund's average
net assets.
     The Fund has authorized  Wellington Management to choose brokers or dealers
to handle the purchase and sale of securities  for the Fund, and to get the best
available price and most favorable  execution from these brokers with respect to
all transactions.
     In the interest of obtaining better execution of a transaction,  Wellington
Management  may choose brokers who charge higher  commissions.  If more than one
broker can obtain the best  available  price and most  favorable  execution of a
transaction, then Wellington Management is authorized to choose a broker who, in
addition  to  executing  the  transaction,  will  provide  research  services to
Wellington  Management  or the  Fund.  Also,  the  Fund  may  direct  Wellington
Management to use a particular  broker for certain  transactions in exchange for
commission rebates or research services provided to the Fund.
     The Board of Trustees may, without prior approval from shareholders, change
the terms of an advisory agreement or hire a new investment  adviser-- either as
a  replacement  for  an  existing  adviser  or as  an  additional  adviser.  Any
significant  change in the Fund's advisory  arrangements will be communicated to
shareholders in writing. In addition, as the Fund's sponsor and overall manager,
The Vanguard Group may provide  investment  advisory services to the Fund, on an
at-cost basis, at any time.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                               THE FUND'S ADVISER

Wellington  Management  Company,  LLP  (Wellington  Management) is an investment
advisory  firm founded in 1928. As of November 30, 1999,  Wellington  Management
managed  more than $226.5  billion in stock and bond  portfolios,  including  15
Vanguard funds. The individuals  responsible for overseeing  Vanguard Wellington
Fund are:

ERNST H. VON  METZSCH,  CFA,  Senior Vice  President  and partner of  Wellington
Management;  has worked in investment  management  since 1970;  with  Wellington
Management since 1973; has managed portfolio  investments since 1984; M.Sc., The
University of Leiden, The Netherlands; Ph.D., Harvard University.

PAUL D. KAPLAN, Senior Vice President and partner of Wellington Management;  has
worked in investment  management  since 1974; with Wellington  Management  since
1978;  has managed  the bond  portion of the Fund since  1994;  B.S.,  Dickinson
College;  M.S.,  The Sloan  School of  Management,  Massachusetts  Institute  of
Technology.
- --------------------------------------------------------------------------------
<PAGE>

                                                                              13

DIVIDENDS, CAPITAL GAINS, AND TAXES

The Fund  distributes to shareholders  virtually all of its net income (interest
and dividends,  less  expenses),  as well as any capital gains realized from the
sale of its holdings. Income dividends generally are distributed in March, June,
September,  and  December;   capital  gains  distributions  generally  occur  in
December.
     Your  dividend  and  capital  gains  distributions  will be  reinvested  in
additional  Fund  shares  and  accumulate  on a  tax-deferred  basis  if you are
investing through an employer-sponsored retirement or savings plan. You will not
owe taxes on these  distributions until you begin withdrawals from the plan. You
should consult your plan administrator, your plan's Summary Plan Description, or
your tax adviser about the tax consequences of plan withdrawals.

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                                  DISTRIBUTIONS
As a  shareholder,  you are  entitled  to your share of the fund's  income  from
interest and dividends, and gains from the sale of investments. You receive such
earnings as either an income  dividend or a capital gains  distribution.  Income
dividends come from both the dividends that the fund earns from its holdings and
the  interest it receives  from its money market and bond  investments.  Capital
gains are realized  whenever the fund sells securities for higher prices than it
paid for them. These capital gains are either short-term or long-term, depending
on whether  the fund held the  securities  for one year or less or more than one
year.
- --------------------------------------------------------------------------------


SHARE PRICE

The Fund's share price,  called its net asset value,  or NAV, is calculated each
business day after the close of regular  trading on the New York Stock  Exchange
(the NAV is not  calculated  on  holidays  or other  days when the  Exchange  is
closed).  Net asset  value per share is computed by adding up the total value of
the Fund's  investments  and other assets,  subtracting  any of its  liabilities
(debts), and then dividing by the number of Fund shares outstanding:

                          TOTAL ASSETS - LIABILITIES
     NET ASSET VALUE =  -------------------------------
                         NUMBER OF SHARES OUTSTANDING

     Knowing the daily net asset value is useful to you as a shareholder because
it indicates the current value of your investment. The Fund's NAV, multiplied by
the  number of  shares  you own,  gives you the  dollar  amount  you would  have
received had you sold all of your shares back to the Fund that day.
     A NOTE ON PRICING:  The Fund's  investments  will be priced at their market
value when market  quotations are readily  available.  When these quotations are
not  readily  available,  investments  will  be  priced  at  their  fair  value,
calculated according to procedures adopted by the Fund's Board of Trustees.
     The Fund's  share price can be found  daily in the mutual fund  listings of
most major newspapers under the heading "Vanguard  Funds." Different  newspapers
use different abbreviations of the Fund's name, but the most common is WELLTN.
<PAGE>

14

FINANCIAL HIGHLIGHTS

The following financial  highlights table is intended to help you understand the
Fund's financial  performance for the past five years,  and certain  information
reflects  financial  results for a single Fund share.  The total  returns in the
table represent the rate that an investor would have earned or lost each year on
an investment  in the Fund  (assuming  reinvestment  of all dividend and capital
gains  distributions).  This  information  has been derived  from the  financial
statements audited by PricewaterhouseCoopers LLP, independent accountants, whose
report--along  with the Fund's financial  statements--is  included in the Fund's
most recent annual report to  shareholders.  You may have the annual report sent
to you without charge by contacting Vanguard.

- --------------------------------------------------------------------------------
                                              VANGUARD WELLINGTON FUND
                                               YEAR ENDED NOVEMBER 30,
                                       -----------------------------------------
                                        1999     1998     1997     1996    1995
- --------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF YEAR    $32.29   $31.05   $28.34   $24.57  $19.33
- --------------------------------------------------------------------------------
INVESTMENT OPERATIONS
 Net Investment Income                  1.13     1.13     1.11     1.02     .96
 Net Realized and Unrealized Gain
   (Loss) on Investments               (0.14)    2.86     3.77     4.00    5.19
                                       -----------------------------------------
   Total from Investment Operations     0.99     3.99     4.88     5.02    6.15
                                       -----------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment Income  (1.22)   (1.18)   (1.06)    (.97)   (.88)
 Distributions from Realized Capital
   Gains                               (2.44)   (1.57)   (1.11)    (.28)   (.03)
                                       -----------------------------------------
   Total Distributions                 (3.66)   (2.75)   (2.17)   (1.25)   (.91)
- --------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR          $29.62   $32.29   $31.05   $28.34  $24.57
================================================================================
TOTAL RETURN                           3.58%   13.84%   18.60%   21.26%  32.70%
================================================================================
RATIOS/SUPPLEMENTAL DATA
 Net Assets, End of Year (Millions)  $25,846  $25,829  $21,340  $16,505 $12,333
 Ratio of Total Expenses to
   Average Net Assets                  0.30%    0.31%    0.29%    0.31%   0.33%
 Ratio of Net Investment Income to
   Average Net Assets                  3.74%    3.68%    3.97%    4.08%   4.37%
 Turnover Rate                           22%      29%      27%      30%     24%
================================================================================
<PAGE>

                                                                              15

- --------------------------------------------------------------------------------
                                PLAIN TALK ABOUT
                   HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

The Fund began  fiscal 1999 with a net asset value  (price) of $32.29 per share.
During  the  year,  the Fund  earned  $1.13  per share  from  investment  income
(interest and dividends). There was a decline of $0.14 per share in the value of
investments held or sold by the Fund.

Shareholders  received $3.66 per share in the form of dividend and capital gains
distributions.  A portion of each year's  distributions  may come from the prior
year's income or capital gains.

The  earnings  ($0.99  per  share)  minus the  distributions  ($3.66  per share)
resulted in a share price of $29.62 at the end of the year.  This was a decrease
of $2.67 per share (from  $32.29 at the  beginning  of the year to $29.62 at the
end of the year).  For a shareholder  who  reinvested the  distributions  in the
purchase of more shares, the total return from the Fund was 3.58% for the year.

As of November 30, 1999, the Fund had $25.8 billion in net assets. For the year,
its  expense  ratio was 0.30%  ($3.00  per  $1,000 of net  assets);  and its net
investment  income  amounted to 3.74% of its  average  net  assets.  It sold and
replaced securities valued at 22% of its net assets.
- --------------------------------------------------------------------------------

"Standard & Poor's(R),"  "S&P(R),"  "S&P  500(R),"  "Standard & Poor's 500," and
"500" are trademarks of The McGraw-Hill Companies, Inc.
<PAGE>

16

INVESTING WITH VANGUARD

The Fund is an investment  option in your  retirement or savings plan. Your plan
administrator  or your  employee  benefits  office can provide you with detailed
information  on how to  participate in your plan and how to elect the Fund as an
investment option.
- -    If you have any questions about the Fund or Vanguard, including those about
     the Fund's investment objective,  strategies,  or risks, contact Vanguard's
     Participant Services Center, toll-free, at 1-800-523-1188.
- -    If you have questions about your account,  contact your plan  administrator
     or the organization that provides recordkeeping services for your plan.

INVESTMENT OPTIONS AND ALLOCATIONS
Your  plan's  specific  provisions  may  allow  you to  change  your  investment
selections,  the amount of your  contributions,  or how your  contributions  are
allocated  among the  investment  choices  available  to you.  Contact your plan
administrator or employee benefits office for more details.

TRANSACTIONS
Contributions,  exchanges,  or redemptions of the Fund's shares are processed as
soon as they have been received by Vanguard in good order. Good order means that
your request includes complete  information on your contribution,  exchange,  or
redemption, and that Vanguard has received the appropriate assets.
     In all cases, your transaction will be based on the Fund's  next-determined
net asset value after  Vanguard  receives  your  request (or, in the case of new
contributions,  the  next-determined net asset value after Vanguard receives the
order from your plan administrator).  As long as this request is received before
the close of trading on the New York Stock  Exchange,  generally 4 p.m.  Eastern
time, you will receive that day's net asset value.

EXCHANGES
The exchange  privilege (your ability to redeem shares from one fund to purchase
shares of another  fund) may be available to you through your plan.  Although we
make every  effort to maintain  the exchange  privilege,  Vanguard  reserves the
right to revise or terminate this privilege,  limit the amount of an exchange or
reject any exchange,  at any time, without notice.  Because excessive  exchanges
can potentially  disrupt the management of the Fund and increase its transaction
costs,  Vanguard  limits  participant  exchange  activity  to no more  than FOUR
SUBSTANTIVE  "ROUND TRIPS"  THROUGH THE FUND (at least 90 days apart) during any
12-month  period.  A "round  trip" is a redemption  from the Fund  followed by a
purchase back into the Fund.  "Substantive"  means a dollar amount that Vanguard
determines, in its sole discretion, could adversely affect the management of the
Fund.
     Before  making an exchange to or from another fund  available in your plan,
consider the following:
- -    Certain investment options,  particularly funds made up of company stock or
     investment contracts, may be subject to unique restrictions.
- -    Make sure to read that fund's  prospectus.  Contact  Participant  Services,
     toll-free, at 1-800-523-1188 for a copy.
- -    Vanguard can accept exchanges only as permitted by your plan.  Contact your
     plan  administrator for details on the exchange policies that apply to your
     plan.
<PAGE>

                                                                              17

ACCESSING FUND INFORMATION BY COMPUTER

- --------------------------------------------------------------------------------
VANGUARD ON THE WORLD WIDE WEB www.vanguard.com
Use your personal computer to visit Vanguard's education-oriented website, which
provides  timely news and  information  about  Vanguard  funds and services;  an
online  "university"  that  offers  a  variety  of  mutual  fund  classes;   and
easy-to-use,  interactive  tools to help you  create  your  own  investment  and
retirement strategies.
- --------------------------------------------------------------------------------
<PAGE>

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<PAGE>

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<PAGE>

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<PAGE>

GLOSSARY OF INVESTMENT TERMS

BALANCED FUND
A mutual fund that seeks to provide some combination of income,  capital growth,
and conservation of capital by investing in stocks,  bonds,  and/or money market
instruments.

BOND
A debt security (IOU) issued by a corporation,  government, or government agency
in exchange for the money you lend it. In most  instances,  the issuer agrees to
pay back the loan by a specific date and to make regular interest payments until
that date.

CAPITAL GAINS DISTRIBUTION
Payment to mutual fund  shareholders  of gains  realized on securities  that the
fund has sold at a profit, minus any realized losses.

COMMON STOCK
A security  representing  ownership  rights in a  corporation.  A stockholder is
entitled  to share in the  company's  profits,  some of which may be paid out as
dividends.

CREDIT QUALITY
A measure of a bond  issuer's  ability to pay interest and principal in a timely
manner.

DIVIDEND INCOME
Payment to  shareholders  of income from  interest or  dividends  generated by a
fund's investments.

EXPENSE RATIO
The  percentage  of a fund's  average net assets used to pay its  expenses.  The
expense ratio  includes  management  fees,  administrative  fees,  and any 12b-1
distribution fees.

FACE VALUE
The amount to be paid at maturity of a bond; the par value or principal.

GROWTH STOCK FUND
A mutual fund that emphasizes stocks of companies believed to have above-average
prospects for growth.  Reflecting market  expectations for superior growth,  the
prices of  growth  stocks  often are  relatively  high in  comparison  with such
factors as revenue, earnings, book value, and dividends.

INVESTMENT GRADE
A bond whose credit quality by independent bond-rating agencies is considered to
be sufficient to ensure timely  payment of principal and interest  under current
economic circumstances.

MATURITY
The date when a bond issuer agrees to repay the bond's principal, or face value,
to the bond's buyer.

NET ASSET VALUE
The market value of a mutual fund's total assets, minus liabilities,  divided by
the  number of shares  outstanding.  The value of a single  share is called  its
share value or share price.

PRICE/EARNINGS (P/E) RATIO
The current share price of a stock,  divided by its per-share earnings (profits)
from the past year. A stock selling for $20, with earnings of $2 per share,  has
a price/earnings ratio of 10.

PRINCIPAL
The amount of money you put into an investment.

TOTAL RETURN
A percentage change,  over a specified time period, in a mutual fund's net asset
value,  with the ending net asset value adjusted to account for the reinvestment
of all distributions of dividends and capital gains.

VALUE STOCK FUND
A mutual fund that  emphasizes  stocks of companies  whose growth  prospects are
generally   regarded  as  subpar  by  the  market.   Reflecting   these   market
expectations,  the  prices  of  value  stocks  typically  are  below-average  in
comparison with such factors as revenue, earnings, book value, and dividends.

VOLATILITY
The  fluctuations  in value of a mutual  fund or other  security.  The greater a
fund's volatility, the wider the fluctuations between its high and low prices.

YIELD
Income  (interest  or  dividends)  earned  by  an  investment,  expressed  as  a
percentage of the investment's price.
<PAGE>


                                                     [SHIP]
                                                     [THE VANGUARD GROUP(R)]
                                                     Institutional Division
                                                     Post Office Box 2900
                                                     Valley Forge, PA 19482-2900
FOR MORE INFORMATION
If you'd like more information about
Vanguard Wellington Fund, the
following documents are available
free upon request:

ANNUAL/SEMIANNUAL REPORTS
TO SHAREHOLDERS
Additional information about the
Fund's investments is available in
the Fund's annual and semiannual
reports to shareholders.

STATEMENT OF ADDITIONAL
INFORMATION (SAI)
The SAI provides more detailed
information about the Fund.

The current annual and semiannual
reports and the SAI are
incorporated by reference into
(and are thus legally a part of)
this prospectus.

To receive a free copy of the latest
annual or semiannual report or the
SAI, or to request additional
information about the Fund or other
Vanguard funds, please contact us
as follows:

THE VANGUARD GROUP
PARTICIPANT SERVICES CENTER
P.O. BOX 2900
VALLEY FORGE, PA 19482-2900

TELEPHONE:
1-800-523-1188

TEXT TELEPHONE:
1-800-523-8004

WORLD WIDE WEB:
WWW.VANGUARD.COM

INFORMATION PROVIDED BY THE
SECURITIES AND EXCHANGE
COMMISSION (SEC)
You can review and copy
information about the Fund
(including  the SAI) at the SEC's
Public Reference Room in
Washington, DC. To find out more
about this public service, call the
SEC at 1-800-SEC-0330. Reports and
other information about the Fund are
also available on the SEC's website
(www.sec.gov), or you can receive
copies of this information, for a fee,
by writing the Public Reference
Section, Securities and Exchange
Commission, Washington, DC
20549-0102.


Fund's Investment Company Act
file number: 811-121

(C) 2000 The Vanguard Group, Inc.
All rights reserved.
Vanguard Marketing Corporation,
Distributor.

I021N-03/24/2000
<PAGE>

                                     PART B

                            VANGUARD WELLINGTON FUND
                                   (THE FUND)

                      STATEMENT OF ADDITIONAL INFORMATION

                                 MARCH 24, 2000

This Statement is not a prospectus  but should be read in  conjunction  with the
Fund's current Prospectus (dated March 24, 2000). To obtain, without charge, the
Prospectus or the most recent Annual Report to Shareholders,  which contains the
Fund's financial statements as hereby incorporated by reference, please call:

                        INVESTOR INFORMATION DEPARTMENT:
                                 1-800-662-7447

                                TABLE OF CONTENTS

                                                                            PAGE
DESCRIPTION OF THE FUND......................................................B-1
INVESTMENT POLICIES..........................................................B-3
YIELD AND TOTAL RETURN.......................................................B-8
PURCHASE OF SHARES..........................................................B-10
REDEMPTION OF SHARES........................................................B-10
SHARE PRICE.................................................................B-11
FUNDAMENTAL INVESTMENT LIMITATIONS..........................................B-11
MANAGEMENT OF THE FUND......................................................B-13
INVESTMENT ADVISORY SERVICES................................................B-16
PORTFOLIO TRANSACTIONS......................................................B-18
FINANCIAL STATEMENTS........................................................B-19
COMPARATIVE INDEXES.........................................................B-19


                            DESCRIPTION OF THE FUND

ORGANIZATION

The Fund was  organized as a Delaware  Corporation  in 1928,  before  becoming a
Maryland  corporation in 1973, and then reorganized as a Delaware business trust
in May, 1998. Prior to its reorganization as a Delaware business trust, the Fund
was known as  Vanguard/Wellington  Fund,  Inc. The Fund is  registered  with the
United States  Securities and Exchange  Commission  (the  Commission)  under the
Investment  Company  Act of 1940  (the  1940  Act) as an  open-end,  diversified
management  investment company. It currently offers the following fund and class
of shares:  Vanguard  Wellington  Fund (the  Fund).  The Fund has the ability to
offer additional funds or classes of shares.  There is no limit on the number of
full and fractional shares that the Fund may issue for a single fund or class of
shares.

SERVICE PROVIDERS

     CUSTODIAN.  The Chase  Manhattan  Bank,  N.A.,  4 Chase  MetroTech  Center,
Brooklyn,  New York 11245,  serves as the Fund's  custodian.  The  custodian  is
responsible for maintaining the Fund's assets and keeping all necessary accounts
and records of Fund assets.

     INDEPENDENT ACCOUNTANTS.  PricewaterhouseCoopers LLP, 30 South 17th Street,
Philadelphia,  Pennsylvania 19103, serves as the Fund's independent accountants.
The accountants audit the Fund's financial  statements and provide other related
services.

     TRANSFER  AND   DIVIDEND-PAYING   AGENT.  The  Fund's  transfer  agent  and
dividend-paying  agent is The Vanguard  Group,  Inc.,  100  Vanguard  Boulevard,
Malvern, Pennsylvania 19355.

                                       B-1
<PAGE>

CHARACTERISTICS OF THE FUND'S SHARES

     RESTRICTIONS  ON HOLDING OR DISPOSING OF SHARES.  There are no restrictions
on the right of  shareholders  to retain or dispose of the Fund's shares,  other
than the possible future  termination of the Fund. The Fund may be terminated by
reorganization  into another mutual fund or by liquidation  and  distribution of
the assets of the fund. Unless terminated by reorganization or liquidation,  the
Fund will continue indefinitely.

     SHAREHOLDER  LIABILITY.  The Fund is organized  under  Delaware law,  which
provides  that  shareholders  of a  business  trust  are  entitled  to the  same
limitations of personal  liability as  shareholders  of a corporation  organized
under Delaware law. Effectively,  this means that a shareholder of the Fund will
not be personally liable for payment of the Fund's debts except by reason of his
or her own conduct or acts. In addition,  a shareholder  could incur a financial
loss on account of a Fund  obligation  only if the Fund itself had no  remaining
assets with which to meet such  obligation.  We believe that the  possibility of
such a situation arising is extremely remote.

     DIVIDEND  RIGHTS.  The  shareholders  of a fund are entitled to receive any
dividends or other distributions declared for such fund. No shares have priority
or  preference  over  any  other  shares  of  the  same  fund  with  respect  to
distributions. Distributions will be made from the assets of a fund, and will be
paid ratably to all  shareholders of the fund (or class) according to the number
of shares of such fund (or class) held by  shareholders  on the record date. The
amount of income  dividends per share may vary between separate share classes of
the same fund based upon  differences  in the way that  expenses  are  allocated
between share classes pursuant to a multiple class plan.

     VOTING  RIGHTS.  Shareholders  are  entitled  to vote on a matter if: (i) a
shareholder  vote is required  under the 1940 Act;  (ii) the matter  concerns an
amendment to the Declaration of Trust that would adversely  affect to a material
degree the rights and  preferences  of the shares of any class or fund; or (iii)
the Trustees determine that it is necessary or desirable to obtain a shareholder
vote.  The 1940 Act requires a  shareholder  vote under  various  circumstances,
including to elect or remove  Trustees upon the written  request of shareholders
representing 10% or more of the Fund's net assets, and to change any fundamental
policy of the Fund. Shareholders of the Fund receive one vote for each dollar of
net  asset  value  owned on the  record  date,  and a  fractional  vote for each
fractional dollar of net asset value owned on the record date. However, only the
shares of the fund affected by a particular  matter are entitled to vote on that
matter.  Voting  rights  are  non-cumulative  and cannot be  modified  without a
majority vote.

     LIQUIDATION  RIGHTS.  In the  event of  liquidation,  shareholders  will be
entitled to receive a pro rata share of the Fund's net assets.

     PREEMPTIVE  RIGHTS.  There are no  preemptive  rights  associated  with the
Fund's shares.

     CONVERSION  RIGHTS.  There are no  conversion  rights  associated  with the
Fund's shares.

     REDEMPTION  PROVISIONS.  The Fund's redemption  provisions are described in
its  current   prospectus   and  elsewhere  in  this   Statement  of  Additional
Information.

     SINKING FUND PROVISIONS. The Fund has no sinking fund provisions.

     CALLS OR  ASSESSMENT.  The Fund's shares,  when issued,  are fully paid and
non-assessable.

TAX STATUS OF THE FUND

The Fund  intends to continue  to qualify as a  "regulated  investment  company"
under  Subchapter M of the Internal  Revenue Code. This special tax status means
that the Fund will not be liable for  federal  tax on income and  capital  gains
distributed to shareholders.  In order to preserve its tax status, the Fund must
comply with certain requirements.  If it fails to meet these requirements in any
taxable  year,  it will be subject  to tax on its  taxable  income at  corporate
rates,  and  all  distributions   from  earnings  and  profits,   including  any
distributions of net tax-exempt  income and net long-term capital gains, will be
taxable to shareholders as ordinary income. In addition, the Fund could be

                                       B-2

<PAGE>

required to recognize unrealized gains, pay substantial taxes and interest,  and
make  substantial  distributions  before regaining its tax status as a regulated
investment company.


                              INVESTMENT POLICIES

The following policies supplement the Fund's investment policies as set forth in
the Prospectus.

     REPURCHASE  AGREEMENTS.  The Fund may invest in repurchase  agreements with
commercial  banks,  brokers,  or dealers  either for  defensive  purposes due to
market  conditions  or to  generate  income  from its excess  cash  balances.  A
repurchase   agreement  is  an  agreement   under  which  the  Fund  acquires  a
fixed-income  security (generally a security issued by the U.S. Government or an
agency  thereof,  a banker's  acceptance  or a  certificate  of deposit)  from a
commercial bank, broker or dealer,  subject to resale to the seller at an agreed
upon price and date  (normally,  the next business day). A repurchase  agreement
may be considered a loan collateralized by securities. The resale price reflects
an agreed upon interest rate  effective for the period the instrument is held by
the Fund and is unrelated to the interest rate on the underlying instrument.  In
these  transactions,  the  securities  acquired by the Fund  (including  accrued
interest  earned  thereon) must have a total value in excess of the value of the
repurchase  agreement  and are held by a Custodian  Bank until  repurchased.  In
addition,  the Fund's  Board of  Trustees  will  monitor  the Fund's  repurchase
agreement transactions generally and will establish guidelines and standards for
review by the investment adviser of the  creditworthiness of any bank, broker or
dealer party to a repurchase agreement with the Fund.

     The use of repurchase  agreements  involves certain risks. For example,  if
the other party to the agreement  defaults on its  obligation to repurchase  the
underlying  security at a time when the value of the security has declined,  the
Fund may incur a loss upon  disposition  of the security.  If the other party to
the agreement  becomes  insolvent and subject to liquidation  or  reorganization
under  bankruptcy  or other  laws,  a court may  determine  that the  underlying
security is collateral for a loan by the Fund not within the control of the Fund
and  therefore  the   realization  by  the  Fund  on  such   collateral  may  be
automatically  stayed.  Finally, it is possible that the Fund may not be able to
substantiate  its  interest  in the  underlying  security  and may be  deemed an
unsecured  creditor  of the other  party to the  agreement.  While  the  adviser
acknowledges  these risks,  it is expected that they can be  controlled  through
careful monitoring procedures.

     LENDING  OF  SECURITIES.  The Fund may lend  its  portfolio  securities  to
qualified  institutional  investors (typically brokers,  dealers, banks or other
financial  institutions)  who need to  borrow  securities  in order to  complete
certain transactions, such as covering short sales, avoiding failures to deliver
securities  or  completing  arbitrage  operations.   By  lending  its  portfolio
securities,  the Fund  attempts  to increase  its income  through the receipt of
interest  on the loan.  Any gain or loss in the market  price of the  securities
loaned that might occur  during the term of the loan would be for the account of
the Fund.  The terms and the structure  and the  aggregate  amount of such loans
must be  consistent  with  the  1940  Act,  and the  Rules  and  Regulations  or
interpretations  of  the  Commission.  These  provisions  limit  the  amount  of
securities  a fund may lend to 33 1/3% of the Fund's total  assets,  and require
that (a) the borrower pledge and maintain with the Fund collateral consisting of
cash, a letter of credit issued by a domestic U.S. bank, or securities issued or
guaranteed by the United States  Government having a value at all times not less
than 100% of the value of the  securities  loaned,  (b) the borrower add to such
collateral whenever the price of the securities loaned rises (i.e., the borrower
"marks  to the  market"  on a daily  basis),  (c) the  loan be made  subject  to
termination  by the  Fund  at any  time,  and (d) the  Fund  receive  reasonable
interest on the loan (which may include the Fund's investing any cash collateral
in interest  bearing  short-term  investments),  any  distribution on the loaned
securities and any increase in their market value. Loan arrangements made by the
Fund will comply with all other applicable  regulatory  requirements,  including
the rules of the New York Stock Exchange (the  Exchange),  whose rules presently
require the borrower,  after  notice,  to redeliver  the  securities  within the
normal   settlement  time  of  three  business  days.  All  relevant  facts  and
circumstances,   including  the  creditworthiness  of  the  broker,   dealer  or
institution,

                                       B-3
<PAGE>

will  be  considered  in  making  decisions  with  respect  to  the  lending  of
securities, subject to review by the Fund's Board of Trustees.

     At the  present  time,  the Staff of the  Commission  does not object if an
investment  company pays  reasonable  negotiated  fees in connection with loaned
securities,  so long as such  fees  are set  forth  in a  written  contract  and
approved by the investment company's trustees.  In addition,  voting rights pass
with the loaned  securities  but if a material  event  will occur  affecting  an
investment on loan, the loan must be called and the securities voted.

     VANGUARD INTERFUND LENDING PROGRAM.  The Commission has issued an exemptive
order  permitting  the  Fund to  participate  in  Vanguard's  interfund  lending
program.  This program  allows the Vanguard  funds to borrow money from and loan
money to each other for temporary or emergency purposes.  The program is subject
to a number of conditions,  including the requirement that no fund may borrow or
lend money through the program unless it receives a more favorable interest rate
than is available from a typical bank for a comparable transaction. In addition,
a fund may  participate  in the  program  only if and to the  extent  that  such
participation  is  consistent  with the fund's  investment  objective  and other
investment  policies.   The  Boards  of  Trustees  of  the  Vanguard  funds  are
responsible  for  ensuring  that  the  interfund  lending  program  operates  in
compliance with all conditions of the Commission's exemptive order.

     ILLIQUID  SECURITIES.  The Fund may  invest up to 15% of its net  assets in
illiquid securities.  Illiquid securities are securities that may not be sold or
disposed of in the ordinary  course of business  within seven  business  days at
approximately the value at which they are being carried on the Fund's books.

     The Fund may invest in restricted,  privately placed securities that, under
securities  laws, may be sold only to qualified  institutional  buyers.  Because
these securities can be resold only to qualified  institutional buyers, they may
be considered illiquid  securities--meaning that they could be difficult for the
Fund to convert to cash if needed.

     If a  substantial  market  develops for a restricted  security  held by the
Fund, it will be treated as a liquid security, in accordance with procedures and
guidelines  approved by the Fund's Board of Trustees.  This  generally  includes
securities  that are  unregistered  that can be sold to qualified  institutional
buyers in accordance  with Rule 144A under the  Securities Act of 1933 (the 1933
Act). While the Fund's investment adviser determines the liquidity of restricted
securities  on  a  daily  basis,   the  Board  oversees  and  retains   ultimate
responsibility  for the  adviser's  decisions.  Several  factors  that the Board
considers in monitoring these decisions include the valuation of a security, the
availability  of  qualified   institutional  buyers,  and  the  availability  of
information about the security's issuer.

     MORTGAGE-BACKED   SECURITIES.   The  Fund  may  invest  in  mortgage-backed
securities.  Mortgage-backed  securities are instruments that entitle the holder
to a share of all interest and principal payments from mortgages  underlying the
security.   The  mortgages   backing  these  securities   include   conventional
thirty-year  fixed rate mortgages,  graduated  payment  mortgages and adjustable
rate  mortgages.  During  periods of declining  interest  rates,  prepayment  of
mortgages underlying  mortgage-backed  securities may be expected to accelerate.
Prepayment of mortgages which underlie  securities  purchased at a premium often
results in capital losses, while prepayment of mortgages purchased at a discount
often  results  in capital  gains.  Because  of these  unpredictable  prepayment
characteristics, it is often not possible to predict accurately the average life
or realized yield of a particular issue.

     COLLATERALIZED  MORTGAGE OBLIGATIONS ("CMOS"). CMOs are debt obligations or
multi-class pass-through certificates issued by agencies or instrumentalities of
the U.S.  Government,  or by private originators or investors in mortgage loans.
In a CMO,  series  of bonds or  certificates  are  usually  issued  in  multiple
classes,  with  principal  and interest  allocated to each class in a variety of
ways.  Each  class of a CMO or  "tranche"  is issued  with a  specific  fixed or
floating coupon rate and has a stated maturity or final  distribution  date. The
Fund will invest modestly in those CMO classes

                                       B-4

<PAGE>

which  feature  a  high  degree  of  cash  flow   predictability   and  moderate
vulnerability to prepayment risk, and that carry  high-quality  investment grade
credit ratings.

     FOREIGN  INVESTMENTS.  Vanguard Wellington Fund may invest up to 20% of its
assets in equity  securities  of  foreign  companies.  The Fund may also  invest
without limits in  fixed-income  securities  issued by foreign  governments  and
companies;  however,  these securities must be valued,  or denominated,  in U.S.
dollars and meet the Fund's credit quality standards. Investors should recognize
that investing in foreign  companies  involves  certain  special  considerations
which are not typically associated with investing in U.S. companies.

     Country  Risk. As foreign  companies  are not generally  subject to uniform
accounting,  auditing and financial reporting standards and practices comparable
to those applicable to domestic companies,  there may be less publicly available
information  about certain  foreign  companies  than about  domestic  companies.
Securities of some foreign companies are generally less liquid and more volatile
than  securities  of  comparable  domestic  companies.  There is generally  less
government  supervision and regulation of foreign stock  exchanges,  brokers and
listed  companies than in the U.S. In addition,  with respect to certain foreign
countries,  there is the possibility of expropriation or confiscatory  taxation,
political or social instability,  or diplomatic  developments which could affect
U.S. investments in those countries.

     Although the Fund will endeavor to achieve most favorable  execution  costs
in its portfolio transactions, fixed commissions on many foreign stock exchanges
are generally higher than negotiated commissions on U.S. exchanges. In addition,
it is  expected  that the  expenses  for  custodial  arrangements  of the Fund's
foreign  securities will be somewhat greater than the expenses for the custodial
arrangements for handling U.S. securities of equal value.

     Certain foreign  governments  levy  withholding  taxes against dividend and
interest  income.  Although  in some  countries  a  portion  of  these  taxes is
recoverable,  the non-recovered portion of foreign withholding taxes will reduce
the income the Fund receives from its foreign investments.

     Currency  Risk.  Since  the  stocks of  foreign  companies  are  frequently
denominated  in  foreign  currencies,  and since the Fund may  temporarily  hold
uninvested  reserves in bank  deposits in foreign  currencies,  the Fund will be
affected  favorably or  unfavorably by changes in currency rates and in exchange
control regulations,  and may incur costs in connection with conversions between
various currencies.

     Federal Tax  Treatment of Non-U.S.  Transactions.  Special rules govern the
Federal income tax treatment of certain  transactions  denominated in terms of a
currency  other than the U.S.  dollar or determined by reference to the value of
one or more  currencies  other than the U.S.  dollar.  The types of transactions
covered by the special rules include the following:  (i) the  acquisition of, or
becoming the obligor under, a bond or other debt instrument  (including,  to the
extent provided in Treasury regulations,  preferred stock); (ii) the accruing of
certain  trade  receivables  and  payables;  and  (iii)  the  entering  into  or
acquisition  of any  forward  contract,  futures  contract,  option  or  similar
financial instrument if such instrument is not marked to market. The disposition
of a currency other than the U.S. dollar by a taxpayer whose functional currency
is the U.S.  dollar is also  treated as a  transaction  subject  to the  special
currency rules. However,  foreign  currency-related  regulated futures contracts
and nonequity options are generally not subject to the special currency rules if
they are or would be  treated as sold for their fair  market  value at  year-end
under the  marking-to-market  rules applicable to other futures contracts unless
an  election  is made  to have  such  currency  rules  apply.  With  respect  to
transactions  covered by the special  rules,  foreign  currency  gain or loss is
calculated separately from any gain or loss on the underlying transaction and is
normally  taxable as ordinary  income or loss.  A taxpayer may elect to treat as
capital  gain or  loss  foreign  currency  gain or  loss  arising  from  certain
identified  forward  contracts,  futures  contracts and options that are capital
assets in the hands of the  taxpayer  and which are not part of a straddle.  The
Treasury Department issued regulations under which certain  transactions subject
to  the  special  currency  rules  that  are  part  of a  "section  988  hedging
transaction" (as defined in the Internal  Revenue Code of 1986, as amended,  and
the Treasury regulations) will be integrated and treated as a single transaction
or otherwise

                                       B-5
<PAGE>

treated  consistently for purposes of the Code. Any gain or loss attributable to
the foreign  currency  component of a transaction  engaged in by a fund which is
not subject to the special  currency rules (such as foreign  equity  investments
other than certain  preferred stock) will be treated as capital gain or loss and
will not be segregated from the gain or loss on the underlying  transaction.  It
is  anticipated  that some of the non-U.S.  dollar-denominated  investments  and
foreign  currency  contracts  the Fund may make or enter into will be subject to
the special currency rules described above.

     FUTURES CONTRACTS. The Fund may enter into futures contracts,  options, and
options on futures  contracts for the purpose of simulating  full investment and
reducing  transactions  costs.  Futures contracts provide for the future sale by
one party and  purchase  by another  party of a  specified  amount of a specific
security at a specified future time and at a specified price.  Futures contracts
which are standardized as to maturity date and underlying  financial  instrument
are traded on national  futures  exchanges.  Futures  exchanges  and trading are
regulated  under the  Commodity  Exchange Act by the Commodity  Futures  Trading
Commission  (CFTC),  a U.S.  Government  agency.  Assets  committed  to  futures
contracts will be segregated to the extent required by law.

     Although  futures  contracts  by their  terms call for actual  delivery  or
acceptance of the underlying securities,  in most cases the contracts are closed
out before the settlement date without the making or taking of delivery. Closing
out an open futures position is done by taking an opposite position  ("buying" a
contract which has previously  been "sold",  or "selling" a contract  previously
purchased)  in an  identical  contract  to  terminate  the  position.  Brokerage
commissions are incurred when a futures contract is bought or sold.

     Futures traders are required to make a good faith margin deposit in cash or
government  securities  with a broker or custodian to initiate and maintain open
positions  in  futures  contracts.  A  margin  deposit  is  intended  to  assure
completion of the contract  (delivery or acceptance of the underlying  security)
if it is not terminated  prior to the specified  delivery date.  Minimal initial
margin  requirements are established by the futures exchange and may be changed.
Brokers may establish  deposit  requirements  which are higher than the exchange
minimums.  Futures contracts are customarily  purchased and sold on margin which
may range upward from less than 5% of the value of the contract being traded.

     After a futures contract  position is opened,  the value of the contract is
marked to market daily. If the futures contract price changes to the extent that
the  margin  on  deposit  does  not  satisfy  margin  requirements,  payment  of
additional  "variation"  margin  will be  required.  Conversely,  change  in the
contract  value may reduce the  required  margin,  resulting  in a repayment  of
excess margin to the contract holder.  Variation margin payments are made to and
from the futures  broker as long as the contract  remains open. The Fund expects
to earn interest income on its margin deposits.

     Traders in futures contracts may be broadly  classified as either "hedgers"
or "speculators". Hedgers use the futures market primarily to offset unfavorable
changes in the value of securities  otherwise  held for  investment  purposes or
expected  to be  acquired  by them.  Speculators  are less  inclined  to own the
securities  underlying the futures  contracts which they trade,  and use futures
contracts with the  expectation of realizing  profits from  fluctuations  in the
prices of underlying securities.  The Fund intends to use futures contracts only
for bona fide hedging purposes.

     Regulations of CFTC  applicable to the Fund require that all of its futures
transactions constitute bona fide hedging transactions except to the extent that
the aggregate initial margins and premiums required to establish any non-hedging
positions do not exceed five percent of the value of the Fund's  portfolio.  The
Fund will only sell  futures  contracts  to protect  securities  it owns against
price declines or purchase contracts to protect against an increase in the price
of securities it intends to purchase. As evidence of this hedging interest,  the
Fund expects that  approximately  75% of its futures contract  purchases will be
"completed",  that is, equivalent  amounts of related  securities will have been
purchased  or are  being  purchased  by the  Fund  upon  sale  of  open  futures
contracts.

                                       B-6
<PAGE>

     Although  techniques other than the sale and purchase of futures  contracts
could be used to control the Fund's exposure to market fluctuations,  the use of
futures contracts may be a more effective means of hedging this exposure.  While
the Fund will incur commission  expenses in both opening and closing out futures
positions, these costs are lower than transaction costs incurred in the purchase
and sale of the underlying securities.

     Restrictions on the Use of Futures Contracts.  The Fund will not enter into
futures contract transactions to the extent that,  immediately  thereafter,  the
sum of its initial margin  deposits on open  contracts  exceeds 5% of the market
value of the Fund's  total  assets.  In  addition,  the Fund will not enter into
futures  contracts to the extent that its  outstanding  obligations  to purchase
securities under these contracts would exceed 20% of the Fund's total assets.

     Risk Factors in Futures Transactions. Positions in futures contracts may be
closed  out only on an  Exchange  which  provides  a  secondary  market for such
futures.  However, there can be no assurance that a liquid secondary market will
exist for any particular futures contract at any specific time. Thus, it may not
be  possible  to  close a  futures  position.  In the  event  of  adverse  price
movements, the Fund would continue to be required to make daily cash payments to
maintain its required margin.  In such situations,  if the Fund has insufficient
cash, it may have to sell portfolio securities to meet daily margin requirements
at a time when it may be disadvantageous to do so. In addition,  the Fund may be
required to make delivery of the  instruments  underlying  futures  contracts it
holds.  The inability to close options and futures  positions also could have an
adverse impact on the ability to effectively  hedge.  The Fund will minimize the
risk that it will be unable to close  out a futures  contract  by only  entering
into futures which are traded on national futures  exchanges and for which there
appears to be a liquid secondary market.

     The risk of loss in trading  futures  contracts in some  strategies  can be
substantial,  due both to the low margin  deposits  required,  and the extremely
high degree of leverage  involved in futures pricing.  As a result, a relatively
small  price  movement  in a  futures  contract  may  result  in  immediate  and
substantial loss (as well as gain) to the investor.  For example, if at the time
of purchase,  10% of the value of the futures contract is deposited as margin, a
subsequent  10% decrease in the value of the futures  contract would result in a
total  loss of the margin  deposit,  before any  deduction  for the  transaction
costs,  if the account  were then closed out. A 15%  decrease  would result in a
loss equal to 150% of the original  margin  deposit if the contract  were closed
out.  Thus,  a purchase  or sale of a futures  contract  may result in losses in
excess of the amount  invested  in the  contract.  However,  because the futures
strategies  of the Fund are  engaged in only for hedging  purposes,  the Adviser
does not  believe  that  the Fund is  subject  to the  risks of loss  frequently
associated with futures  transactions.  The Fund would presumably have sustained
comparable  losses if, instead of the futures  contract,  it had invested in the
underlying financial instrument and sold it after the decline.

     Utilization  of futures  transactions  by the Fund does involve the risk of
imperfect or no correlation  where the securities  underlying  futures contracts
have different maturities than the portfolio securities being hedged. It is also
possible  that the Fund  could  both lose  money on  futures  contacts  and also
experience  a decline in value of its  portfolio  securities.  There is also the
risk of loss by the Fund of  margin  deposits  in the event of  bankruptcy  of a
broker with whom the Fund has an open position in a futures  contract or related
option.

     Most futures exchanges limit the amount of fluctuation permitted in futures
contract  prices during a single  trading day. The daily limit  establishes  the
maximum  amount that the price of a futures  contract may vary either up or down
from the previous day's settlement  price at the end of a trading session.  Once
the daily limit has been reached in a particular type of contract, no trades may
be made on that day at a price beyond that limit.  The daily limit  governs only
price  movement  during a particular  trading day and  therefore  does not limit
potential  losses,  because the limit may prevent the liquidation of unfavorable
positions.  Futures contract prices have  occasionally  moved to the daily limit
for  several  consecutive  trading  days  with  little  or no  trading,  thereby
preventing  prompt  liquidation of futures positions and subjecting some futures
traders to substantial losses.

                                       B-7
<PAGE>

     Federal  Tax  Treatment  of Futures  Contracts.  The Fund is  required  for
Federal income tax purposes to recognize as income for each taxable year its net
unrealized  gains and losses on certain  futures  contracts as of the end of the
year as well as those  actually  realized  during the year. In these cases,  any
gain or loss recognized  with respect to a futures  contract is considered to be
60%  long-term  capital  gain or loss and 40%  short-term  capital gain or loss,
without  regard to the  holding  period  of the  contract.  Gains and  losses on
certain other futures contracts  (primarily non-U.S.  futures contracts) are not
recognized  until the  contracts  are closed and are  treated  as  long-term  or
short-term  depending on the holding  period of the  contract.  Sales of futures
contracts  which  are  intended  to  hedge  against  a  change  in the  value of
securities  held by the Fund may affect the  holding  period of such  securities
and,  consequently,  the  nature  of the  gain or loss on such  securities  upon
disposition.  A Fund may be  required  to defer  the  recognition  of  losses on
futures  contracts to the extent of any unrecognized  gains on related positions
held by the Fund.

     In order for a Fund to continue to qualify for Federal income tax treatment
as a  regulated  investment  company,  at least  90% of its gross  income  for a
taxable year must be derived from qualifying income; i.e., dividends,  interest,
income derived from loans of securities, gains from the sale of securities or of
foreign  currencies or other income derived with respect to the Fund's  business
of investing in securities or currencies.  It is  anticipated  that any net gain
recognized  on  futures  contracts  will be  considered  qualifying  income  for
purposes of the 90% requirement.

     A Fund will distribute to shareholders annually any net capital gains which
have been  recognized for Federal  income tax purposes on futures  transactions.
Such distributions will be combined with distributions of capital gains realized
on the Fund's other  investments and shareholders  will be advised on the nature
of the transactions.

     TEMPORARY INVESTMENTS.  The Fund may take temporary defensive measures that
are  inconsistent  with  the  Fund's  normal   fundamental  or   non-fundamental
investment  policies and  strategies  in response to adverse  market,  economic,
political or other  conditions.  Such measures could include  investments in (a)
highly  liquid  short-term  fixed-income  securities  issued  by or on behalf of
municipal or  corporate  issuers,  obligations  of the U.S.  Government  and its
agencies,  commercial  paper,  and bank  certificates of deposit;  (b) shares of
other  investment  companies  which have investment  objectives  consistent with
those of the Fund; (c) repurchase agreements involving any such securities;  and
(d) other money market instruments. There is no limit on the extent to which the
Fund may take temporary  defensive measures.  In taking such measures,  the Fund
may fail to achieve its investment objective.


                             YIELD AND TOTAL RETURN

SEC YIELD

The yield of the Fund for the 30-day  period ended  November 30, 1999 was 3.86%.
Yields are calculated daily and premiums and discounts on asset-backed  accounts
are not amortized.

     Yield is the net  annualized  yield  based on a  specified  30-day  (or one
month) period assuming semiannual  compounding of income. Yield is calculated 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, according to the
following formula:

                          YIELD = 2[((A-B)/CD+1)(6)-1]

  Where:

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

                                      B-8
<PAGE>

AVERAGE ANNUAL TOTAL RETURN

The average  annual total return of the Fund for the one-,  five-,  and ten-year
periods ended November 30, 1999 was 3.58%, 17.61%, and 12.73%, respectively.

     Average annual total return is the average annual compounded rate of return
for the periods of one year, five years, ten years, or the life of the Fund, all
ended on the last day of a recent month.  Average annual total return quotations
will  reflect  changes  in the price of the Fund's  shares  and assume  that all
dividends and capital gains  distributions  during the  respective  periods were
reinvested in Fund shares.

     Average  annual total return is  calculated  by finding the average  annual
compounded  rates of  return of a  hypothetical  investment  over  such  periods
according  to the  following  formula  (average  annual  total  return  is  then
expressed as a percentage):

                               T = (ERV/P)(1/N)-1

  Where:

          T = average annual total return
          P = a hypothetical initial investment of $1,000
          n = number of years
        ERV = ending redeemable value: ERV is the value, at the end of the
              applicable period, of a hypothetical $1,000 investment made
              at the beginning of the applicable period

AVERAGE ANNUAL AFTER-TAX TOTAL RETURN QUOTATION

We calculate the Fund's  average  annual  after-tax  total return by finding the
average annual  compounded  rate of return over the 1-, 5-, and 10-year  periods
(or for periods of the Fund's  operations)  that would equate the initial amount
invested to the after-tax value, according to the following formulas:

After-tax return:

                                 P(1+T)(N) = ATV

  Where:

          P = a hypothetical initial payment of $1,000
          T = average annual after-tax return
          n = number of years
        ATV = after-tax value at the end of the 1-, 5-, or 10-year periods of a
              hypothetical $1,000 payment made at the beginning of the
              time period, assuming no liquidation of the investment at
              the end of the measurement periods.

Instructions.

1.Assume all  distributions  by the Fund are  reinvested--less  the taxes due on
  such  distributions--at the price on the reinvestment dates during the period.
  Adjustments may be made for subsequent re-characterizations of distributions.

2.Calculate the taxes due on  distributions  by the Fund by applying the highest
  federal  marginal  tax rates to each  component  of the  distributions  on the
  reinvestment date (e.g.,  ordinary income,  short-term capital gain, long-term
  capital gain, etc.). For periods after December 31, 1997, the federal marginal
  tax  rates  used for the  calculations  are  39.6%  for  ordinary  income  and
  short-term  capital gains and 20% for long-term  capital gains.  Note that the
  applicable tax rates may vary over the measurement period. Assume no taxes are
  due on the  portions of any  distributions  classified  as exempt  interest or
  non-taxable  (i.e.,  return of capital).  Ignore any potential tax liabilities
  other than federal tax liabilities (e.g., state and local taxes).

                                      B-9
<PAGE>

3.Include all recurring fees that are charged to all shareholder  accounts.  For
  any  account  fees that vary with the size of the  account,  assume an account
  size  equal to the  Fund's  mean (or  median)  account  size.  Assume  that no
  additional  taxes or tax credits result from any redemption of shares required
  to pay such fees.

4.State the total return quotation to the nearest hundredth of one percent.

CUMULATIVE TOTAL RETURN

Cumulative  total  return is the  cumulative  rate of  return on a  hypothetical
initial  investment of $1,000 for a specified  period.  Cumulative  total return
quotations reflect changes in the price of the Fund's shares and assume that all
dividends and capital gains  distributions  during the period were reinvested in
Fund shares.  Cumulative  total return is calculated  by finding the  cumulative
rates of a return of a hypothetical  investment over such periods,  according to
the  following  formula   (cumulative  total  return  is  then  expressed  as  a
percentage):

                                  C = (ERV/P)-1

  Where:

          C = cumulative total return
          P = a hypothetical initial investment of $1,000
        ERV = ending redeemable value: ERV is the value, at the end of the
              applicable period, of a hypothetical $1,000 investment made
              at the beginning of the applicable period


                               PURCHASE OF SHARES

The Fund reserves the right in its sole discretion:  (i) to suspend the offering
of its shares, (ii) to reject purchase orders when in the judgment of management
such rejection is in the best interest of the Fund, and (iii) to reduce or waive
the minimum  investment for or any other  restrictions on initial and subsequent
investments for certain fiduciary  accounts,  such as employee benefit plans, or
under  circumstances  where  certain  economies  can be achieved in sales of the
Fund's shares.

TRADING SHARES THROUGH CHARLES SCHWAB

The Fund has  authorized  Charles  Schwab & Co., Inc.  (Schwab) to accept on its
behalf purchase and redemption orders under certain terms and conditions. Schwab
is also  authorized to designate  other  intermediaries  to accept  purchase and
redemption  orders on the Fund's behalf  subject to those terms and  conditions.
Under this  arrangement,  the Fund will be deemed to have received a purchase or
redemption order when Schwab or, if applicable,  Schwab's  authorized  designee,
accepts the order in accordance  with the Fund's  instructions.  Customer orders
that are properly transmitted to the Fund by Schwab, or if applicable,  Schwab's
authorized designee, will be priced as follows:

     Orders  received by Schwab before 3 p.m.  Eastern time on any business day,
will be sent to  Vanguard  that day and your  share  price  will be based on the
Fund's  net asset  value  calculated  at the close of trading  that day.  Orders
received by Schwab after 3 p.m.  Eastern  time,  will be sent to Vanguard on the
following  business  day and your  share  price  will be based on the Fund's net
asset value calculated at the close of trading that day.


                              REDEMPTION OF SHARES

The Fund may suspend redemption  privileges or postpone the date of payment: (i)
during any period  that the  Exchange is closed,  or trading on the  Exchange is
restricted as determined by the the  Commission,  (ii) during any period when an
emergency  exists as  defined by the  Commission  as a result of which it is not
reasonably  practicable  for the Fund to dispose of  securities  owned by it, or
fairly to determine the value of its assets, and (iii) for such other periods as
the Commission may permit.

                                      B-10
<PAGE>

     The Fund  has  made an  election  with  the  Commission  to pay in cash all
redemptions  requested by any shareholder of record limited in amount during any
90-day  period to the lesser of  $250,000 or 1% of the net assets of the Fund at
the beginning of such period.

     No charge is made by the Fund for redemptions. Shares redeemed may be worth
more or less than what was paid for them,  depending  on the market value of the
securities held by the Fund.


                                  SHARE PRICE

The Fund's  share  price,  or "net asset  value" per  share,  is  calculated  by
dividing the total assets of the Fund, less all liabilities, by the total number
of shares outstanding. The net asset value is determined as of the regular close
of the Exchange  generally 4:00 p.m.  Eastern time on each day that the Exchange
is open for trading.

     Portfolio  securities  for which market  quotations  are readily  available
(including those securities listed on national securities exchanges,  as well as
those quoted on the NASDAQ Stock Market) will be valued at the last quoted sales
price on the day the valuation is made. Such securities  which are not traded on
the  valuation  date are  valued  at the mean of the bid and ask  prices.  Price
information on  exchange-listed  securities is taken from the exchange where the
security is primarily  traded.  Securities  may be valued on the basis of prices
provided by a pricing  service when such prices are believed to reflect the fair
market value of such securities.


     Short-term instruments (those acquired with remaining maturities of 60 days
or less) may be valued at cost, plus or minus any amortized discount or premium,
which approximates market value.


     Bonds  and  other  fixed-income  securities  may be  valued on the basis of
prices  provided by a pricing  service  when such prices are believed to reflect
the fair  market  value of such  securities.  The prices  provided  by a pricing
service  may be  determined  without  regard to bid or last sale  prices of each
security,  but take into  account  institutional-size  transactions  in  similar
groups of securities as well as any developments related to specific securities.

     Foreign securities are valued at the last quoted sales price,  according to
the broadest and most representative  market,  available at the time the Fund is
valued.  If events which materially  affect the value of the Fund's  investments
occur after the close of the  securities  markets on which such  securities  are
primarily  traded,  those investments may be valued by such methods as the Board
of Trustees deems in good faith to reflect fair value.

     In  determining  the  Fund's  net asset  value per  share,  all  assets and
liabilities  initially  expressed in foreign  currencies  will be converted into
U.S.  dollars using the  officially  quoted daily  exchange rates used by Morgan
Stanley Capital  International in calculating various benchmarking indexes. This
officially quoted exchange rate may be determined prior to or after the close of
a particular securities market. If such quotations are not available,  or do not
reflect market  conditions at the time the Fund is valued,  the rate of exchange
will be determined in accordance with policies  established in good faith by the
Board of Trustees.

     Other assets and securities  for which no quotations are readily  available
or which are restricted as to sale (or resale) are valued by such methods as the
Board of Trustees deems in good faith to reflect fair value.

     The share price for the Fund can be found daily in the mutual fund listings
of most major newspapers under the heading of Vanguard Funds.


                       FUNDAMENTAL INVESTMENT LIMITATIONS

The Fund is subject to the following fundamental investment  limitations,  which
cannot be changed in any  material  way without the approval of the holders of a
majority of the Fund's shares.  For these  purposes,  a "majority" of the Fund's
shares  means  shares  representing  the lesser of: (i) 67% or more of the votes
cast to approve a change, so long as shares representing more than 50% of the

                                      B-11
<PAGE>

Fund's net asset value are present or  represented  by proxy;  or (ii) more than
50% of the Fund's net asset value.

     BORROWING. The Fund may not borrow money, except for temporary or emergency
purposes in an amount not exceeding  15% of the Fund's net assets.  The Fund may
borrow money through banks or Vanguard's  interfund  lending  program only,  and
must comply with all applicable regulatory conditions. The Fund may not make any
additional  investments whenever its outstanding borrowings exceed 5% of its net
assets.

     COMMODITIES.  The Fund may not invest in  commodities,  except  that it may
invest in bond and stock futures contracts,  bond and stock options, and options
on bond and stock futures contracts.  No more than 5% of the Fund's total assets
may be used as initial  margin deposit for futures  contracts,  and no more than
20% of the Fund's total  assets may be invested in futures  contracts or options
at any time.

     DIVERSIFICATION. With respect to 75% of its total assets, the Fund may not:
(i)  purchase  more than 10% of the  outstanding  voting  securities  of any one
issuer; or (ii) purchase  securities of any issuer if, as a result, more than 5%
of the Fund's total assets would be invested in that issuer's  securities.  This
limitation  does not apply to obligations of the United States  Government,  its
agencies, or instrumentalities.

     ILLIQUID SECURITIES. The Fund may not acquire any security if, as a result,
more  than  15% of its net  assets  would be  invested  in  securities  that are
illiquid.

     INDUSTRY CONCENTRATION.  The Fund may not invest more than 25% of its total
assets in any one industry.

     INVESTING FOR CONTROL. The Fund may not invest in a company for purposes of
controlling its management.

     INVESTMENT  COMPANIES.  The Fund may not  invest  in any  other  investment
company, except through a merger,  consolidation or acquisition of assets, or to
the extent permitted by Section 12 of the 1940 Act.  Investment  companies whose
shares the Fund acquires pursuant to Section 12 must have investment  objectives
and investment policies consistent with those of the Fund.

     LOANS.  The Fund may not lend  money to any  person  except  by  purchasing
fixed-income  securities that are publicly distributed or customarily  purchased
by institutional  investors, by entering into repurchase agreements,  by lending
its portfolio securities, or through Vanguard's interfund lending program.

     MARGIN.  The Fund may not purchase  securities on margin or sell securities
short,  except as  permitted  by the  Fund's  investment  policies  relating  to
commodities.

     PLEDGING ASSETS. The Fund may not pledge, mortgage or hypothecate more than
15% of its net assets.

     REAL ESTATE.  The Fund may not invest directly in real estate,  although it
may invest in securities of companies that deal in real estate and bonds secured
by real estate.

     SENIOR  SECURITIES.  The Fund may not issue  senior  securities,  except in
compliance with the 1940 Act.

     UNDERWRITING.  The Fund may not  engage  in the  business  of  underwriting
securities  issued  by  other  persons.  The  Fund  will  not be  considered  an
underwriter when disposing of its investment securities.

     The  above-mentioned  investment  limitations  are  considered  at the time
investment securities are purchased.

     None of these  limitations  prevents  the Fund  from  participating  in The
Vanguard Group,  Inc.  (Vanguard).  Because the Fund is a member of The Vanguard
Group of Investment  Companies,  the Fund may own securities issued by Vanguard,
make loans to Vanguard, and contribute to

                                      B-12
<PAGE>

Vanguard's  costs or other financial  requirement.  See "Management of the Fund"
for more information.


                             MANAGEMENT OF THE FUND

OFFICERS AND TRUSTEES

The officers of the Fund manage its day-to-day operations and are responsible to
the Fund's Board of Trustees.  The Trustees set broad  policies for the Fund and
choose its officers. The following is a list of the Trustees and officers of the
Fund and a statement of their present positions and principal occupations during
the past five years. As a group,  the Fund's Trustees and officers own less than
1% of the outstanding shares of the Fund. Each Trustee also serves as a Director
of The  Vanguard  Group,  Inc.,  and as a  Trustee  of  each  of the  103  funds
administered  by Vanguard (102 in the case of Mr.  Malkiel and 93 in the case of
Mr.  MacLaury).  The mailing address of the Trustees and officers of the Fund is
Post Office Box 876, Valley Forge, Pennsylvania 19482.

JOHN J. BRENNAN, (DOB: 7/29/1954) Chairman, Chief Executive Officer & Trustee*
Chairman,  Chief Executive Officer and Director of The Vanguard Group, Inc., and
Trustee of each of the investment companies in The Vanguard Group.

JOANN HEFFERNAN HEISEN, (DOB: 1/25/1950) Trustee
Vice President, Chief Information Officer, and member of the Executive Committee
of Johnson and Johnson (Pharmaceuticals/Consumer  Products), Director of Johnson
& Johnson*MERCK  Consumer  Pharmaceuticals Co., The Medical Center at Princeton,
and Women's Research and Education Institute.

BRUCE K. MACLAURY, (DOB: 5/7/1931) Trustee
President  Emeritus  of  The  Brookings  Institution  (Independent  Non-Partisan
Research  Organization);  Director of American  Express Bank, Ltd., The St. Paul
Companies, Inc. (Insurance and Financial Services), and National Steel Corp.

BURTON G. MALKIEL, (DOB: 8/28/1932) Trustee
Chemical Bank Chairman's Professor of Economics, Princeton University;  Director
of Prudential Insurance Co. of America, Banco Bilbao Gestinova, Baker Fentress &
Co.  (Investment  Management),  The Jeffrey Co.  (Holding  Company),  and Select
Sector SPDR Trust (Exchange-Traded Mutual Fund).

ALFRED M. RANKIN, JR., (DOB: 10/8/1941) Trustee
Chairman,  President, Chief Executive Officer, and Director of NACCO Industries,
Inc. (Machinery/ Coal/Appliances);  and Director of The BFGoodrich Co. (Aircraft
Systems/Manufacturing/Chemicals).

JOHN C. SAWHILL, (DOB: 6/12/1936) Trustee
President  and Chief  Executive  Officer of The Nature  Conservancy  (Non-Profit
Conservation Group);  Director of Pacific Gas and Electric Co., Procter & Gamble
Co.,  NACCO  Industries,   Inc.  (Machinery/   Coal/Appliances),   and  Newfield
Exploration Co.  (Energy);  formerly,  Director and Senior Partner of McKinsey &
Co., and President of New York University.

JAMES O. WELCH, JR., (DOB: 5/13/1931) Trustee
Retired Chairman of Nabisco Brands, Inc. (Food Products);  retired Vice Chairman
and  Director  of RJR  Nabisco  (Food and  Tobacco  Products);  Director of TECO
Energy, Inc., and Kmart Corp.

J. LAWRENCE WILSON, (DOB: 3/2/1936) Trustee
Retired Chairman of Rohm & Haas Co. (Chemicals);  Director of Cummins Engine Co.
(Diesel Engine Company), The Mead Corp. (Paper Products); and AmeriSource Health
Corp.; and Trustee of Vanderbilt University.

                                      B-13
<PAGE>

RAYMOND J. KLAPINSKY, (DOB: 12/7/1938) Secretary*
Managing Director of The Vanguard Group, Inc.;  Secretary of The Vanguard Group,
Inc. and of each of the investment companies in The Vanguard Group.

THOMAS J. HIGGINS, (DOB: 5/21/1957) Treasurer*
Principal  of The Vanguard  Group,  Inc.;  Treasurer  of each of the  investment
companies in The Vanguard Group.

ROBERT D. SNOWDEN, (DOB: 9/4/1961) Controller*
Principal of The Vanguard  Group,  Inc.;  Controller  of each of the  investment
companies in The Vanguard Group.

*Officers of the Fund are "interested persons" as defined in the 1940 Act.

THE VANGUARD GROUP

The Fund is a  member  of The  Vanguard  Group of  Investment  Companies,  which
consists of more than 100 funds.  Through their  jointly-owned  subsidiary,  The
Vanguard Group,  Inc., the Fund and the other funds in The Vanguard Group obtain
at  cost  virtually  all  of  their  corporate  management,  administrative  and
distribution services. Vanguard also provides investment advisory services on an
at-cost basis to several of the Vanguard funds.

     Vanguard  employs  a  supporting  staff of  management  and  administrative
personnel  needed  to  provide  the  requisite  services  to the  funds and also
furnishes the funds with necessary office space, furnishings and equipment. Each
fund pays its share of Vanguard's  total expenses which are allocated  among the
funds under methods approved by the Board of Trustees of each fund. In addition,
each fund bears its own direct  expenses  such as legal,  auditing and custodian
fees.

     The Officers of the funds' are also Officers and employees of Vanguard.  No
Officer or employee owns, or is permitted to own, any securities of any external
adviser for the funds.


     Vanguard and the Fund's  adviser have adopted  Codes of Ethics  designed to
prevent employees who may have access to nonpublic information about the trading
activities of the Fund (access  persons) from profiting  from that  information.
The Codes permit access  persons to invest in securities for their own accounts,
including  securities  that may be held by the Fund, but place  substantive  and
procedural  restrictions  on their trading  activities.  For example,  the Codes
require that access persons receive advance  approval for every securities trade
to ensure that there is no conflict with the trading activities of the Fund.


     Vanguard was  established and operates under an Amended and Restated Funds'
Service  Agreement which was approved by the  shareholders of each of the funds.
The amounts  which each of the funds has invested are adjusted from time to time
in order to maintain the proportionate relationship between each fund's relative
net assets and its contribution to Vanguard's capital.  The Amended and Restated
Funds'  Service  Agreement  provides as follows:  (1) each  Vanguard fund may be
called  upon to invest up to .40% of its  current  assets in  Vanguard,  and (2)
there is no other  limitation  on the dollar  amount that each Vanguard fund may
contribute to Vanguard's  capitalization.  At November 30, 1999,  the Wellington
Fund had contributed  capital of $5,463,000 to Vanguard,  representing  0.02% of
the Fund's net assets and 5.5% of Vanguard's capitalization.

     MANAGEMENT.  Corporate management and administrative  services include: (1)
executive  staff;  (2) accounting and financial;  (3) legal and regulatory;  (4)
shareholder  account  maintenance;  (5)  monitoring  and  control  of  custodian
relationships;  (6)  shareholder  reporting;  and (7) review and  evaluation  of
advisory and other services provided to the funds by third parties.

     DISTRIBUTION.  Vanguard Marketing Corporation, a wholly-owned subsidiary of
The Vanguard Group, Inc., provides all distribution and marketing activities for
the funds in the Group. The principal distribution expenses are for advertising,
promotional  materials and marketing personnel.  Distribution  services may also
include  organizing  and offering to the public,  from time to time, one or more
new investment companies which will become members of Vanguard. The Trustees and

                                      B-14
<PAGE>

officers of Vanguard  determine the amount to be spent annually on  distribution
activities,  the  manner and  amount to be spent on each  fund,  and  whether to
organize new investment companies.

     One half of the distribution expenses of a marketing and promotional nature
is allocated among the funds based upon their relative net assets. The remaining
one half of these  expenses is allocated  among the funds based upon each fund's
sales for the preceding 24 months  relative to the total sales of the funds as a
Group, provided, however, that no funds aggregate quarterly rate of contribution
for  distribution  expenses of a marketing and  promotional  nature shall exceed
125% of the average  distribution  expense rate for  Vanguard,  and that no fund
shall incur annual  distribution  expenses in excess of .20 of 1% of its average
month end net assets.

     During the fiscal years ended  November 30, 1997,  1998, and 1999, the Fund
incurred the following  approximate  amounts of The Vanguard Group's  management
(including transfer agency) distribution,  and marketing expenses:  $44,819,000,
$65,759,000, and $71,171,000, respectively.

INVESTMENT ADVISORY SERVICES

Vanguard also provides  investment  advisory services to several Vanguard funds.
These  services are provided on an at-cost basis from a money  management  staff
employed directly by Vanguard. The compensation and other expenses of this staff
are paid by the funds utilizing these services.

TRUSTEE COMPENSATION

The  same  individuals  serve  as  Trustees  of all  Vanguard  funds  (with  two
exceptions,  which are noted in the table appearing on page B-16), and each fund
pays a proportionate share of the Trustees' compensation. The funds employ their
officers on a shared  basis,  as well.  However,  officers  are  compensated  by
Vanguard, not the funds.

     INDEPENDENT TRUSTEES. The funds compensate their independent Trustees--that
is, the ones who are not also officers of the Fund--in three ways:
- -    The  independent  Trustees  receive an annual fee for their  service to the
     funds, which is subject to reduction based on absences from scheduled Board
     meetings.
- -    The  independent  Trustees are reimbursed for the travel and other expenses
     that they incur in attending Board meetings.
- -    Upon retirement,  the independent  Trustees receive an aggregate annual fee
     of  $1,000  for each year  served  on the  Board,  up to  fifteen  years of
     service.  This annual fee is paid for ten years  following  retirement,  or
     until each Trustee's death.

     "INTERESTED"  TRUSTEE.  Mr. Brennan serves as a Trustee, but is not paid in
this  capacity.  He is,  however,  paid in his role as officer  of The  Vanguard
Group, Inc.

     COMPENSATION TABLE. The following table provides  compensation  details for
each of the Trustees.  We list the amounts paid as  compensation  and accrued as
retirement benefits by the Fund for each Trustee.  In addition,  the table shows
the total  amount of benefits  that we expect each  Trustee to receive  from all
Vanguard funds upon  retirement,  and the total amount of  compensation  paid to
each Trustee by all Vanguard funds.

                                      B-15
<PAGE>
                                           VANGUARD WELLINGTON FUND
                                         TRUSTEES' COMPENSATION TABLE

<TABLE>
<CAPTION>
<S>                                       <C>               <C>                 <C>               <C>

                                                                PENSION OR                            TOTAL
                                                                RETIREMENT                        COMPENSATION
                                                                 BENEFITS         ESTIMATED         FROM ALL
                                              AGGREGATE         ACCRUED AS         ANNUAL           VANGUARD
                                            COMPENSATION       PART OF THIS     BENEFITS UPON     FUNDS PAID TO
  NAMES OF TRUSTEES                       FROM THIS FUND(1) FUND'S EXPENSES(1)   RETIREMENT        TRUSTEES(2)
- ---------------------------------------------------------------------------------------------------------------
John C. Bogle (3)                                None             None               None              None
John J. Brennan                                  None             None               None              None
Barbara Barnes Hauptfuhrer(4)                    $424              $54            $15,000                $0
JoAnn Heffernan Heisen                         $5,090             $281            $15,000           $80,000
Bruce K. MacLaury                              $5,273             $475            $12,000           $75,000
Burton G. Malkiel                              $5,127             $464            $15,000           $80,000
Alfred M. Rankin, Jr.                          $5,090             $340            $15,000           $80,000
John C. Sawhill                                $5,090             $430            $15,000           $80,000
James O. Welch, Jr.                            $5,090             $496            $15,000           $80,000
J. Lawrence Wilson                             $5,090             $359            $15,000           $80,000
</TABLE>

(1)  The amounts shown in this column are based on the Fund's fiscal year ended,
     November 30, 1999.
(2)  The amounts reported in this column reflect the total  compensation paid to
     each  Trustee  for his or her  service  as Trustee of 103 funds (102 in the
     case of Mr. Malkiel;  93 in the case of Mr. MacLaury) for the 1999 calendar
     year.
(3)  Mr. Bogle has retired from the Fund's Board, effective December 31, 1999.
(4)  Mrs. Hauptfuhrer has retired from the Fund's Board,  effective December 31,
     1998.

                          INVESTMENT ADVISORY SERVICES

The Fund employs  Wellington  Management  Company,  LLP (Wellington  Management)
under an investment advisory agreement to manage the investment and reinvestment
of the assets of the Fund and to continuously  review,  supervise and administer
the  Fund's   investment   program.   Wellington   Management   discharges   its
responsibilities  subject to the  control of the  officers  and  Trustees of the
Fund.

     The Fund pays  Wellington  Management a Basic Fee at the end of each fiscal
quarter,  calculated by applying a quarterly rate, based on the following annual
percentage rates, to the Fund's average month-end net assets for the quarter:

                NET ASSETS                           ANNUAL RATE
                ----------                           -----------
                First $1 billion.................       .100%
                Next $2 billion..................       .050%
                Next $7 billion..................       .040%
                Over $10 billion.................       .030%

                                      B-16
<PAGE>

     During the fiscal years ended  November 30, 1997,  1998, and 1999, the Fund
incurred the following advisory fees:

                                            1997           1998            1999
                                            ----           ----            ----
Basic Fee...........................  $7,447,000     $9,157,000      $9,658,000
Increase or Decrease for Performance
  Adjustment........................    (244,000)    (2,102,000)     (2,480,000)
                                       ----------    -----------     -----------
Total...............................  $7,203,000     $7,055,000      $7,178,000

     The basic  advisory  fee may be  increased  or  decreased  by  applying  an
adjustment  formula based on the investment  performance of the Fund relative to
the investment record of the "Composite Index", 65% of which is comprised of the
Standard & Poor's Composite Stock Price Index,  and, as of March 1, 2000, 35% of
which is comprised of the Lehman Brothers Corporate A or Better Bond Index.

                CUMULATIVE 36-MONTH PERFORMANCE      PERFORMANCE FEE
                VERSUS THE COMPOSITE INDEX           ADJUSTMENT*
                -------------------------------      ---------------
                Less than -6%.................       -0.30 x Basic Fee
                Between -3% and -6%...........       -0.15 x Basic Fee
                Between -3% and 3%............        0.00 x Basic Fee
                Between 3% and 6%.............       +0.15 x Basic Fee
                More than 6%..................       +0.30 x Basic Fee

*For purposes of this  calculation,  the Basic Fee is calculated by applying the
quarterly  rate based on the Annual Basic Fee Rate using average assets over the
same 36-month period over which the performance is measured.

     The new  incentive  penalty fee will not become  fully  operable  until the
quarter ending February 28, 2003. Until that date, the Adviser's Adjustment will
be determined by linking the investment  performance of the *Composite Index and
that of the "Prior Benchmark", 65% of which will comprise of the Stock Index and
35% of which will  comprise of the Lehman  Brothers  Long-Term  Corporate  AA or
Better Bond Index as follows:

     1. QUARTER ENDING MAY 31, 2000. The Adviser's Adjustment will be determined
by linking the  investment  performance  of the Prior  Benchmark  for the eleven
quarters  ending  February 29, 2000,  with that of the  Composite  Index for the
quarter ending May 31, 2000.

     2.  QUARTER  ENDING  AUGUST 31,  2000.  The  Adviser's  Adjustment  will be
determined by linking the investment  performance of the Prior Benchmark for the
ten quarters  ending February 29, 2000, with that of the Composite Index for the
two quarters ending August 31, 2000.

     3. QUARTER  ENDING  NOVEMBER 30, 2000.  The  Adviser's  Adjustment  will be
determined by linking the investment  performance of the Prior Benchmark for the
nine quarters ending February 29, 2000, with that of the Composite Index for the
three quarters ending November 30, 2000.

     4. QUARTER  ENDING  FEBRUARY 28, 2001.  The  Adviser's  Adjustment  will be
determined by linking the investment  performance of the Prior Benchmark for the
eight quarters  ending  February 29, 2000,  with that of the Composite Index for
the four quarters ending February 28, 2001.

     5. QUARTER ENDING MAY 31, 2001. The Adviser's Adjustment will be determined
by linking  the  investment  performance  of the Prior  Benchmark  for the seven
quarters ending February 29, 2000, with that of the Composite Index for the five
quarters ending May 31, 2001.

     6.  QUARTER  ENDING  AUGUST 31,  2001.  The  Adviser's  Adjustment  will be
determined by linking the investment  performance of the Prior Benchmark for the
six quarters  ending February 29, 2000, with that of the Composite Index for the
six quarters ending August 31, 2001.

     7. QUARTER  ENDING  NOVEMBER 30, 2001.  The  Adviser's  Adjustment  will be
determined by linking the investment  performance of the Prior Benchmark for the
five quarters ending February 29, 2000, with that of the Composite Index for the
seven quarters ending November 30, 2001.

                                      B-17
<PAGE>

     8. QUARTER  ENDING  FEBRUARY 28, 2002.  The  Adviser's  Adjustment  will be
determined by linking the investment  performance of the Prior Benchmark for the
four quarters ending February 29, 2000, with that of the Composite Index for the
eight quarters ending February 28, 2002.

     9. QUARTER ENDING MAY 31, 2002. The Adviser's Adjustment will be determined
by linking  the  investment  performance  of the Prior  Benchmark  for the three
quarters ending February 29, 2000, with that of the Composite Index for the nine
quarters ending May 31, 2002.

     10.  QUARTER  ENDING  AUGUST 31, 2002.  The  Adviser's  Adjustment  will be
determined by linking the investment  performance of the Prior Benchmark for the
two quarters  ending February 29, 2000, with that of the Composite Index for the
ten quarters ending August 31, 2002.

     11. QUARTER  ENDING  NOVEMBER 30, 2002.  The Adviser's  Adjustment  will be
determined by linking the investment  performance of the Prior Benchmark for the
one quarter ending  February 29, 2000,  with that of the Composite Index for the
eleven quarters ending November 30, 2002.

     12.  QUARTER  ENDING  FEBRUARY  28,  2003.  The  Composite  Index  is fully
operable.

     The present agreement is renewable for successive one-year periods, only if
each renewal is specifically approved by a vote of the Fund's Board of Trustees,
including  the  affirmative  votes of a  majority  of the  Trustees  who are not
parties to the contract or "interested  persons" (as defined in the 1940 Act) of
any  such  party,  cast  in  person  at a  meeting  called  for the  purpose  of
considering  such  approval.  The  agreement  is  automatically   terminated  if
assigned,  and may be terminated without penalty at any time: (1) by vote of the
Board  of  Trustees  of the  Fund  on 60  days'  written  notice  to  Wellington
Management,  or (2) by Wellington Management upon 90 days' written notice to the
Fund. Any such change will be communicated to shareholders in writing.

DESCRIPTION OF WELLINGTON MANAGEMENT

Wellington  Management is a Massachusetts limited liability partnership of which
the  following  persons  are  managing  partners:  Robert  W.  Doran,  Duncan M.
McFarland, and John R. Ryan.


                             PORTFOLIO TRANSACTIONS

The investment  advisory agreement  authorizes  Wellington  Management (with the
approval of the Fund's  Board of Trustees) to select the brokers or dealers that
will execute the  purchases and sales of portfolio  securities  for the Fund and
directs  Wellington  Management  to use its  best  efforts  to  obtain  the best
available  price and most favorable  execution with respect to all  transactions
for the Fund.  Wellington  Management has undertaken to execute each  investment
transaction  at a price and commission  which provides the most favorable  total
cost or proceeds reasonably obtainable under the circumstances.

     In placing portfolio transactions,  Wellington Management will use its best
judgment to choose the broker most capable of providing the  brokerage  services
necessary to obtain the best available price and most favorable  execution.  The
full range and quality of brokerage  services  available  will be  considered in
making  these  determinations.   In  those  instances  where  it  is  reasonably
determined that more than one broker can offer the brokerage  services needed to
obtain the best available price and most favorable execution,  consideration may
be given to those  brokers  which supply  investment  research  and  statistical
information and provide other services in addition to execution  services to the
Fund  and/or  Wellington   Management.   Wellington   Management  considers  the
investment  services it receives  useful in the  performance of its  obligations
under the agreement but is unable to determine the amount by which such services
may reduce its expenses.

     The investment advisory agreement also incorporates the concepts of Section
28(e) of the Securities  Exchange Act of 1934 by providing that,  subject to the
approval of the Fund's Board of Trustees,  Wellington  Management  may cause the
Fund to pay a broker-dealer  which furnishes  brokerage and research  services a
higher commission than that which might be charged by another  broker-dealer for
effecting the same transaction; provided that such commission is deemed

                                      B-18
<PAGE>

reasonable  in  terms of  either  that  particular  transaction  or the  overall
responsibilities of Wellington Management to the Fund and the other Funds in the
Group.

     Currently,  it is the Fund's policy that Wellington Management may at times
pay higher  commissions in recognition of brokerage  services felt necessary for
the  achievement of better  execution of certain  securities  transactions  that
otherwise  might  not be  available.  Wellington  Management  will only pay such
higher  commissions  if it believes this to be in the best interest of the Fund.
Some brokers or dealers who may receive such higher  commissions  in recognition
of brokerage  services related to execution of securities  transactions are also
providers of research  information  to  Wellington  Management  and/or the Fund.
However,  Wellington Management has informed the Fund that it generally will not
pay higher commission rates  specifically for the purpose of obtaining  research
services.

     During the fiscal years ended  November 30, 1997,  1998,  and 1999 the Fund
paid   $6,369,711,   $9,332,327,   and  $7,335,681  in  brokerage   commissions,
respectively.

     Some  securities  considered  for  investment  by  the  Fund  may  also  be
appropriate for other Funds and/or clients served by Wellington  Management.  If
purchase or sale of securities  consistent  with the investment  policies of the
Fund and one or more of  these  other  funds or  clients  served  by  Wellington
Management  is  considered  at or about  the  same  time,  transactions  in such
securities  will be  allocated  among the several  funds and clients in a manner
deemed  equitable by Wellington  Management.  Although there may be no specified
formula for allocating such  transactions,  the allocation methods used, and the
results of such  allocations,  will be subject to periodic  review by the Fund's
Board of Trustees.


                              FINANCIAL STATEMENTS

The Fund's Financial  Statements for the year ended November 30, 1999, including
the financial highlights for each of the five years in the period ended November
30,  1999,  appearing  in the  Vanguard  Wellington  Fund 1999 Annual  Report to
Shareholders,  and the report thereon of PricewaterhouseCoopers LLP, independent
accountants,  also  appearing  therein,  are  incorporated  by reference in this
Statement of  Additional  Information.  For a more  complete  discussion  of the
performance,  please see the Fund's Annual Report to Shareholders,  which may be
obtained without charge.


                              COMPARATIVE INDEXES

Each  of  the  investment  company  members  of  Vanguard,   including  Vanguard
Wellington  Fund,  may,  from  time to  time,  use one or more of the  following
unmanaged indexes for comparative performance purposes.

STANDARD & POOR'S 500 COMPOSITE STOCK PRICE  INDEX--includes  stocks selected by
Standard & Poor's  Index  Committee  to  include  leading  companies  in leading
industries and to reflect the U.S. stock market.

STANDARD & POOR'S  MIDCAP 400  INDEX--is  composed of 400 medium sized  domestic
stocks.

STANDARD & POOR'S  SMALLCAP  600/BARRA VALUE  INDEX--contains  stocks of the S&P
SmallCap 600 Index which have a lower than average price-to-book ratio.

STANDARD & POOR'S SMALLCAP  600/BARRA GROWTH  INDEX--contains  stocks of the S&P
SmallCap 600 Index which have a higher than average price-to-book ratio.

RUSSELL  1000  VALUE  INDEX--consists  of the stocks in the  Russell  1000 Index
(comprising  the 1,000  largest  U.S.-based  companies  measured by total market
capitalization)  with the lowest  price-to-book  ratios,  comprising  50% of the
market capitalization of the Russell 1000.


WILSHIRE  5000 TOTAL MARKET  INDEX--consists  of more than 7,000  common  equity
securities,  covering  all  stocks  in the  U.S.  for  which  daily  pricing  is
available.


                                      B-19
<PAGE>


WILSHIRE  4500  COMPLETION  INDEX--consists  of all stocks in the Wilshire  5000
except for the 500 stocks in the Standard & Poor's 500 Index.


RUSSELL 3000 STOCK INDEX--a diversified  portfolio of approximately 3,000 common
stocks accounting for over 90% of the market value of publicly-traded  stocks in
the U.S.

RUSSELL 2000 STOCK INDEX--a subset of approximately 2,000 of the smallest stocks
contained in the Russell 3000; a widely-used  benchmark for small capitalization
common stocks.

MORGAN  STANLEY  CAPITAL  INTERNATIONAL  EAFE  INDEX--is an  arithmetic,  market
value-weighted  average of the performance of over 900 securities  listed on the
stock exchanges of countries in Europe, Australia, Asia, and the Far East.

GOLDMAN SACHS 100  CONVERTIBLE  BOND  INDEX--currently  includes 71 bonds and 29
preferreds.   The  original  list  of  names  was  generated  by  screening  for
convertible  issues of $100  million or greater  in market  capitalization.  The
index is priced monthly.

SALOMON BROTHERS GNMA  INDEX--includes  pools of mortgages originated by private
lenders and guaranteed by the mortgage pools of the Government National Mortgage
Association.

SALOMON BROTHERS HIGH-GRADE  CORPORATE BOND  INDEX--consists of publicly-issued,
nonconvertible  corporate bonds rated Aa or Aaa. It is a  value-weighted,  total
return index, including approximately 800 issues with maturities of twelve years
or greater.

LEHMAN  LONG-TERM  TREASURY BOND INDEX--is  composed of all bonds covered by the
Shearson  Lehman  Hutton  Treasury  Bond  Index with  maturities  of 10 years or
greater.

MERRILL LYNCH  CORPORATE & GOVERNMENT  BOND  INDEX--consists  of over 4,500 U.S.
Treasury, agency and investment grade corporate bonds.

LEHMAN   CORPORATE   (BAA)  BOND   INDEX--all   publicly   offered   fixed-rate,
nonconvertible  domestic  corporate bonds rated Baa by Moody's,  with a maturity
longer  than one year and with more than $25  million  outstanding.  This  index
includes over 1,500 issues.

LEHMAN  BROTHERS  LONG-TERM  CORPORATE  BOND  INDEX--is  a subset of the  Lehman
Corporate  Bond Index  covering  all  corporate,  publicly  issued,  fixed-rate,
nonconvertible  U.S.  debt issues rated at least Baa, with at least $100 million
principal outstanding and maturity greater than 10 years.

BOND BUYER  MUNICIPAL BOND INDEX--is a yield index on current coupon  high-grade
general obligation municipal bonds.

STANDARD & POOR'S PREFERRED INDEX--is a yield index based upon the average yield
of four high-grade, non-callable preferred stock issues.

NASDAQ INDUSTRIAL INDEX--is composed of more than 3,000 industrial issues. It is
a  value-weighted  index  calculated  on price  change only and does not include
income.

COMPOSITE  INDEX--70%  Standard  & Poor's  500 Index and 30%  NASDAQ  Industrial
Index.

COMPOSITE  INDEX--65%  Standard  & Poor's  500  Index  and 35%  Lehman  Brothers
Corporate A or Better Bond Index.

COMPOSITE INDEX--65% Lehman Brothers Long-Term Corporate AA or Better Bond Index
and a 35% weighting in a blended  equity  composite (75% Standard & Poor's/BARRA
Value Index, 12.5% Standard & Poor's Utilities Index and 12.5% Standard & Poor's
Telephone Index).

LEHMAN BROTHERS  LONG-TERM  CORPORATE AA OR BETTER BOND  INDEX--consists  of all
publicly    issued,    fixed    rate,     nonconvertible    investment    grade,
dollar-denominated, SEC-registered corporate debt rated AA or AAA.

LEHMAN BROTHERS  AGGREGATE BOND INDEX--is a market-weighted  index that contains
individually priced U.S. Treasury,  agency, corporate, and mortgage pass-through
securities  corporate rated BBB- or better. The Index has a market value of over
$5 trillion.

                                      B-20
<PAGE>

LEHMAN  BROTHERS  CORPORATE A OR BETTER BOND  INDEX--  consists of all  publicly
issued,  investment  grade  corporate  bonds rated A or better,  of all maturity
levels.

LEHMAN  BROTHERS  MUTUAL  FUND  SHORT  (1-5)  GOVERNMENT/CORPORATE  INDEX--is  a
market-weighted index that contains  individually priced U.S. Treasury,  agency,
and  corporate  investment  grade  bonds  rated BBB- or better  with  maturities
between one and five years. The index has a market value of over $1.6 trillion.

LEHMAN BROTHERS MUTUAL FUND INTERMEDIATE (5-10) GOVERNMENT/CORPORATE INDEX--is a
market-weighted index that contains  individually priced U.S. Treasury,  agency,
and corporate  securities rated BBB- or better with maturities  between five and
ten years. The index has a market value of over $800 billion.

LEHMAN  BROTHERS  LONG (10+)  GOVERNMENT/CORPORATE  INDEX--is a  market-weighted
index that contains  individually  priced U.S.  Treasury,  agency, and corporate
securities  rated BBB- or better with  maturities  greater  than ten years.  The
index has a market value of over $1.1 trillion.

LIPPER SMALL  COMPANY  GROWTH FUND  AVERAGE--the  average  performance  of small
company  growth funds as defined by Lipper Inc.  Lipper  defines a small company
growth fund as a fund that,  by  prospectus  or portfolio  practice,  limits its
investments  to companies on the basis of the size of the company.  From time to
time,  Vanguard may advertise using the average  performance  and/or the average
expense ratio of the small company  growth funds.  (This fund category was first
established  in 1982.  For years prior to 1982,  the results of the Lipper Small
Company  Growth  category  were  estimated  using the  returns of the Funds that
constituted the Group at its inception.)

LIPPER BALANCED FUND  AVERAGE--an  industry  benchmark of average balanced funds
with similar investment objectives and policies, as measured by Lipper Inc.

LIPPER  NON-GOVERNMENT  MONEY  MARKET FUND  AVERAGE--an  industry  benchmark  of
average non-government money market funds with similar investment objectives and
policies, as measured by Lipper Inc.

LIPPER  GOVERNMENT MONEY MARKET FUND AVERAGE--an  industry  benchmark of average
government money market funds with similar  investment  objectives and policies,
as measured by Lipper Inc.

LIPPER GENERAL EQUITY FUND  AVERAGE--an  industry  benchmark of average  general
equity funds with similar  investment  objectives  and policies,  as measured by
Lipper Inc.

LIPPER FIXED-INCOME FUND AVERAGE--an  industry benchmark of average fixed-income
funds with similar  investment  objectives  and policies,  as measured by Lipper
Inc.

                                      B-21
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                                                               SAI021-WELLINGTON

                                      B-22


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