MERRILL LYNCH & CO INC
424B3, 1999-01-07
SECURITY BROKERS, DEALERS & FLOTATION COMPANIES
Previous: MECHANICAL TECHNOLOGY INC, 4, 1999-01-07
Next: METRO TEL CORP, 8-A12B, 1999-01-07



<PAGE>

                                                     RULE NO. 424(b)(3)
                                                     REGISTRATION NO. 333-59997

 
                             SUBJECT TO COMPLETION
            PRELIMINARY PROSPECTUS SUPPLEMENT DATED JANUARY 6, 1999

PROSPECTUS SUPPLEMENT
(TO PROSPECTUS DATED JULY 30, 1998)
                                                 [LOGO]MERRILL LYNCH
                                            PROTECTED GROWTH(SM) INVESTING
                                      Pursuit of Growth, Protection of Principal

                                2,500,000 UNITS
                           MERRILL LYNCH & CO., INC.
   ENERGY SELECT SECTOR STANDARD & POOR'S DEPOSITORY RECEIPT ("SPDR(R)") FUND
           MARKET INDEX TARGET-TERM SECURITIES(R) DUE JANUARY  , 2006
                             "MITTS(R) SECURITIES"
                        ($10 PRINCIPAL AMOUNT PER UNIT)
 
                                --------------
 
GENERAL:        .  100% principal protection at maturity ($10 per Unit)
                .  No payments prior to the maturity date
                .  Senior unsecured debt securities of Merrill Lynch & Co.,
                   Inc. ("we" or the "Company")
                .  The MITTS Securities have been approved for listing on the
                   American Stock Exchange ("AMEX") under the trading symbol
                   "ESM".
 
PAYMENT AT MATURITY:
                .  Principal Amount + Supplemental Redemption Amount
                .  The Supplemental Redemption Amount will be based on the
                   percentage increase, if any, in the Net Asset Value per
                   share of the Energy Select Sector SPDR Fund, a registered
                   index fund (the "Energy SPDR Fund"), as reduced by an
                   annual Adjustment Factor expected to be between 0.75% and
                   1.25%. We will determine the annual Adjustment Factor on
                   the Pricing Date and it will appear in the final prospectus
                   supplement delivered to you in connection with sales of the
                   MITTS Securities. At maturity, as a result of the
                   application of the Adjustment Factor, the adjusted Net
                   Asset Value per share of the Energy SPDR Fund used to
                   calculate the Supplemental Redemption Amount will be
                   approximately 5.11% to 8.38% less than the actual Net Asset
                   Value per share of the Energy SPDR Fund. The Supplemental
                   Redemption Amount may be "ZERO", but will not be less than
                   zero.
                .  At maturity, you will receive a number of shares of the
                   Energy SPDR Fund (or cash with an equal value) equal in
                   value to the sum of the Principal Amount and the
                   Supplemental Redemption Amount, if any, based on the
                   average of the Net Asset Values per share of the Energy
                   SPDR Fund at the close of the market on certain days
                   shortly before maturity.
 
     The Energy SPDR Fund is an index fund which has the investment objective
of providing investment results that, before expenses, correspond generally to
the price and yield performance of the publicly traded equity securities
comprising the Energy Select Sector Index (the "Energy Select Sector Index").
The Energy Select Sector Index consists of the equity securities of publicly
traded companies that are components of the S&P 500 and that are involved in
the development and production of energy products. Shares of the Energy SPDR
Fund are listed on the AMEX under the trading symbol "XLE".
 
     We have attached the prospectus for the shares of the Energy SPDR Fund and
are delivering it to you together with this prospectus supplement and the
accompanying prospectus of the Company for the convenience of reference only.
The Fund Prospectus does not constitute a part of this prospectus supplement or
the accompanying prospectus of the Company nor is it incorporated by reference
herein or therein.
 
     BEFORE YOU DECIDE TO INVEST IN THE MITTS SECURITIES, CAREFULLY READ THIS
PROSPECTUS SUPPLEMENT AND PROSPECTUS, INCLUDING THE RISK FACTORS BEGINNING ON
PAGE S-10 OF THIS PROSPECTUS SUPPLEMENT.
 
                                --------------
<TABLE>
<CAPTION>
                                                                PROCEEDS, BEFORE
                                   PUBLIC OFFERING UNDERWRITING   EXPENSES, TO
                                      PRICE(1)     DISCOUNT(1)      COMPANY
                                   --------------- ------------ ----------------
     <S>                           <C>             <C>          <C>
     Per Unit.....................     $10.00           $              $
     Total........................   $25,000,000        $              $
</TABLE>
 
    (1) The Public Offering Price and the Underwriting Discount for any
        single transaction to purchase (a) between 250,000 Units and
        499,999 Units will be $     per Unit and $     per Unit,
        respectively and (b) 500,000 Units or more will be $     per
        Unit and $     per Unit, respectively.
 
     Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if
this prospectus supplement or the accompanying prospectus of the Company is
truthful or complete. Any representation to the contrary is a criminal offense.
 
     The MITTS Securities will be ready for delivery in book-entry form only
through The Depository Trust Company on or about January  , 1999.
 
                                --------------
                              MERRILL LYNCH & CO.
 
                                --------------
 
           The date of this prospectus supplement is January  , 1999.
 
"MITTS" and "Market Index Target-Term Securities" are registered service marks
owned by Merrill Lynch & Co., Inc.
<PAGE>
 
                               TABLE OF CONTENTS
 
                             PROSPECTUS SUPPLEMENT
 
<TABLE>
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
SUMMARY INFORMATION--Q&A..................................................  S-4
  What are the MITTS Securities?..........................................  S-4
  What will I receive at the stated maturity date of the MITTS
   Securities?............................................................  S-4
  How is the Net Asset Value determined?..................................  S-6
  When will I receive cash instead of shares of the Energy SPDR Fund?.....  S-6
  Will I be charged any transaction fees or expenses with respect to the
   shares of the Energy SPDR Fund?........................................  S-7
  What is the Energy SPDR Fund?...........................................  S-7
  What about taxes?.......................................................  S-8
  Will the MITTS Securities be listed on a stock exchange?................  S-8
  What is the role of our subsidiary, MLPF&S?.............................  S-8
  Can you tell me more about the Company?.................................  S-8
  Are there any risks associated with my investment?......................  S-9
WHERE YOU CAN FIND MORE INFORMATION....................................... S-10
  The Company............................................................. S-10
  The Energy SPDR Fund.................................................... S-10
RISK FACTORS.............................................................. S-10
  General................................................................. S-10
  The Supplemental Redemption Amount...................................... S-10
  Your return will not reflect the return of owning shares of the Energy
   SPDR Fund or the securities and other assets comprising the Energy SPDR
   Fund's investment portfolio............................................ S-11
  Changes in the Net Asset Value per share of the Energy SPDR Fund will
   not exactly mirror changes in the Energy Select Sector Index........... S-11
  Your yield may be lower than the yield on a standard debt security of
   comparable maturity.................................................... S-11
  Uncertain trading market................................................ S-11
  Factors affecting trading value of the MITTS Securities................. S-11
  Absence of prior active market for shares of the Energy SPDR Fund....... S-13
  Concentration in energy-related securities.............................. S-13
  No affiliation between the Company and the Energy SPDR Fund............. S-13
  No shareholder's rights................................................. S-13
  State law limits on interest paid....................................... S-13
  Potential conflicts..................................................... S-14
  Uncertain tax consequences.............................................. S-14
RATIO OF EARNINGS TO FIXED CHARGES........................................ S-14
DESCRIPTION OF THE MITTS SECURITIES....................................... S-15
  General................................................................. S-15
  Delivery at Maturity.................................................... S-15
  Fractional Shares....................................................... S-16
  Hypothetical Returns.................................................... S-17
  Adjustments to the Net Asset Value; Market Disruption Events............ S-17
  Termination of the Energy SPDR Fund..................................... S-18
  Events of Default and Acceleration...................................... S-19
  Depositary.............................................................. S-19
  Same-Day Settlement and Delivery........................................ S-22
THE ENERGY SPDR FUND...................................................... S-22
  General................................................................. S-22
  License Agreement....................................................... S-24
</TABLE>
 
                                      S-2
<PAGE>
 
<TABLE>
<CAPTION>
                                                                          PAGE
                                                                          ----
<S>                                                                       <C>
UNITED STATES FEDERAL INCOME TAXATION.................................... S-25
  General................................................................ S-26
  U.S. Holders........................................................... S-26
  Hypothetical Table..................................................... S-29
  Non-U.S. Holders....................................................... S-29
  Backup Withholding..................................................... S-30
  New Withholding Regulations............................................ S-30
USE OF PROCEEDS.......................................................... S-30
UNDERWRITING............................................................. S-31
VALIDITY OF THE MITTS SECURITIES......................................... S-31
INDEX OF DEFINED TERMS................................................... S-32
                                  PROSPECTUS
AVAILABLE INFORMATION....................................................    2
INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE..........................    2
MERRILL LYNCH & CO., INC.................................................    3
USE OF PROCEEDS..........................................................    3
RATIO OF EARNINGS TO FIXED CHARGES AND RATIO OF EARNINGS TO COMBINED
 FIXED CHARGES AND PREFERRED STOCK DIVIDENDS.............................    4
DESCRIPTION OF DEBT SECURITIES...........................................    4
DESCRIPTION OF DEBT WARRANTS.............................................    9
DESCRIPTION OF CURRENCY WARRANTS.........................................   11
DESCRIPTION OF INDEX WARRANTS............................................   12
DESCRIPTION OF PREFERRED STOCK...........................................   17
DESCRIPTION OF DEPOSITARY SHARES.........................................   21
DESCRIPTION OF PREFERRED STOCK WARRANTS..................................   25
DESCRIPTION OF COMMON STOCK..............................................   27
DESCRIPTION OF COMMON STOCK WARRANTS.....................................   30
PLAN OF DISTRIBUTION.....................................................   32
EXPERTS..................................................................   33
</TABLE>
 
                               ----------------
 
      You should rely only on the information contained or incorporated by
reference in this prospectus supplement. We have not authorized any other
person to provide you with different information. If anyone provides you with
different or inconsistent information, you should not rely on it. We are not
making an offer to sell these securities in any jurisdiction where the offer or
sale is not permitted.
 
      You should assume that the information appearing in this prospectus
supplement is accurate as of the date hereof only. Our business, financial
condition, results of operations and prospects may have changed since that
date.
 
      "Standard & Poor's(R)", "Standard & Poor's 500", "S&P 500(R)", "S&P(R)",
"500", "Standard & Poor's Depositary Receipts", "SPDRs", "Select Sector SPDR"
and "Select Sector Standard & Poor's Depositary Receipts" are trademarks of
Standard & Poor's, a division of The McGraw-Hill Companies, Inc., and have been
licensed for use by Merrill Lynch, Pierce, Fenner & Smith Incorporated. Merrill
Lynch & Co., Inc. is an authorized sublicensee of Merrill Lynch, Pierce, Fenner
& Smith Incorporated. The stocks comprising the Energy Select Sector Index were
selected by Merrill Lynch, Pierce, Fenner & Smith Incorporated, as index
compilation agent, in consultation with S&P from the universe of companies
represented by the S&P 500 Index. The composition and weightings of the stocks
included in the Energy Select Sector Index can be expected to differ from the
composition and weighting of stocks included in any similar S&P 500 sector
index published and disseminated by S&P.
 
                                      S-3
<PAGE>
 
                            SUMMARY INFORMATION--Q&A
 
      This summary includes questions and answers that highlight selected
information from the prospectus and prospectus supplement to help you
understand The Energy Select Sector Standard & Poor's Depositary Receipt
("SPDR(R)") Fund Market Index Target-Term Securities(R) due January  , 2006
(the "MITTS SECURITIES"). You should carefully read the Company's prospectus
and this prospectus supplement to understand fully the terms of the MITTS
Securities as well as the tax and other considerations that should be important
to you in making a decision about whether to invest in the MITTS Securities.
You should carefully review the "Risk Factors" section, which highlights
certain risks associated with an investment in the MITTS Securities, to
determine whether an investment in the MITTS Securities is appropriate for you.
 
      We have attached the prospectus for the Energy SPDR Fund (the "FUND
PROSPECTUS"). You should carefully read the Fund Prospectus to fully understand
the operation and management of the Energy SPDR Fund, particularly the fees and
expenses associated with shares of the Energy SPDR Fund which affect the Net
Asset Value per share of the Energy SPDR Fund and which will directly apply to
you if we choose to deliver such shares to you at maturity of the MITTS
Securities. Our affiliate, Merrill Lynch, Pierce, Fenner & Smith Incorporated
("MLPF&S"), is both a soliciting dealer in the shares of the Energy SPDR Fund
and the index compilation agent (the "INDEX COMPILATION AGENT") for the Energy
Select Sector Index (the "ENERGY SELECT SECTOR INDEX"). However, we are not
affiliated with the Energy SPDR Fund or the Energy Select Sector Index. The
Energy SPDR Fund will not receive any of the proceeds from the sale of the
MITTS Securities and will not have any obligations with respect to the MITTS
Securities. WE HAVE ATTACHED THE FUND PROSPECTUS AND ARE DELIVERING IT TO YOU
TOGETHER WITH THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS OF THE
COMPANY FOR THE CONVENIENCE OF REFERENCE ONLY. THE FUND PROSPECTUS DOES NOT
CONSTITUTE A PART OF THIS PROSPECTUS SUPPLEMENT OR THE ACCOMPANYING PROSPECTUS
OF THE COMPANY, NOR IS IT INCORPORATED BY REFERENCE HEREIN OR THEREIN.
 
WHAT ARE THE MITTS SECURITIES?
 
      The MITTS Securities are a series of senior debt securities issued by
Merrill Lynch & Co., Inc. ("WE" or the "COMPANY") and are not secured by
collateral. The MITTS Securities will rank equally with all of our other
unsecured and unsubordinated debt. The MITTS Securities will mature on January
  , 2006 and cannot be redeemed at an earlier date. You will not receive any
shares of the Energy SPDR Fund or any other payments on the MITTS Securities
until maturity.
 
      Each "Unit" of MITTS Securities represents $10 principal amount (the
"PRINCIPAL AMOUNT") of MITTS Securities. You may transfer the MITTS Securities
only in whole Units. You will not have the right to receive physical
certificates evidencing your ownership except under limited circumstances.
Instead, we will issue the MITTS Securities in the form of a global
certificate, which will be held by The Depository Trust Company ("DTC") or its
nominee. Direct and indirect participants in DTC will record beneficial
ownership of the MITTS Securities by individual investors. You should refer to
the section "Description of the MITTS Securities--Depositary" in this
prospectus supplement.
 
WHAT WILL I RECEIVE AT THE STATED MATURITY DATE OF THE MITTS SECURITIES?
 
      We have designed the MITTS Securities for investors who want to protect
their investment by receiving at least the principal amount of their investment
at maturity and who also want to participate in the appreciation, if any, in
the Net Asset Value per share of the Energy SPDR Fund. At maturity, you will
receive a number of shares (and an amount of cash equal to the value of any
fractional shares) of the Energy SPDR Fund (or cash with an equal value) equal
in value to the sum of the Principal Amount and the Supplemental Redemption
Amount, if any. We will determine the number of shares to be delivered to you
based on the Ending Value.
 
                                      S-4
<PAGE>
 
 
 "Principal Amount"
 
      The Principal Amount per Unit is $10.
 
 "Supplemental Redemption Amount"
 
      The Supplemental Redemption Amount per Unit will equal:
 
     (Adjusted Ending Value - Starting Value)
$10 X --------------------------------------
     (           Starting Value             )
 
but will not be less than zero.
 
      "STARTING VALUE" means the Net Asset Value of one share of the Energy
SPDR Fund on the date the MITTS Securities are priced for initial sale to the
public (the "PRICING DATE"). We will disclose the Starting Value in the final
prospectus supplement delivered to you in connection with sales of the MITTS
Securities.
 
      "ADJUSTED ENDING VALUE" means the Ending Value, as reduced by the
application of the Adjustment Factor on each Calculation Day.
 
      "ENDING VALUE" means the average of the Net Assets Values per share of
the Energy SPDR Fund at the close of the market on five Calculation Days
shortly before the maturity of the MITTS Securities. We may calculate the
Ending Value by reference to fewer than five or even a single day's Net Asset
Value if, during the Calculation Period, there is a disruption in the trading
of a number of the component stocks of the Energy Select Sector Index or
options relating to the shares of the Energy SPDR Fund, the Energy SPDR Fund is
unable or otherwise fails to issue a Net Asset Value for the shares of the
Energy SPDR Fund or the Energy SPDR Fund suspends the creation or redemption of
its shares. Please see the section entitled "Description of the MITTS
Securities--Adjustments to the Net Asset Value; Market Disruption Events" in
this prospectus supplement.
 
      The "ADJUSTMENT FACTOR" is expected to be between 0.75% and 1.25% per
year and will reduce the Net Asset Value per share of the Energy SPDR Fund used
to calculate the Supplemental Redemption Amount. We will determine the
Adjustment Factor on the Pricing Date, and it will appear in the final
prospectus supplement delivered to you in connection with sales of the MITTS
Securities. As a result of the application of the Adjustment Factor, the
adjusted Net Asset Value per share of the Energy SPDR Fund used to calculate
your Supplemental Redemption Amount at the maturity of the MITTS Securities
will be approximately 5.11% to 8.38% less than the actual Net Asset Value per
share of the Energy SPDR Fund on any day during the Calculation Period. For a
detailed discussion of how the Adjustment Factor will affect the Net Asset
Value per share of the Energy SPDR Fund used to calculate your Supplemental
Redemption Amount (i.e., the Adjusted Ending Value), see "Description of the
MITTS Securities--Delivery at Maturity" and "--Hypothetical Returns" in this
prospectus supplement.
 
      For more specific information about the Supplemental Redemption Amount,
please see the section "Description of the MITTS Securities" in this prospectus
supplement.
 
                                      S-5
<PAGE>
 
 
 "Examples"
 
  Here are two examples of Supplemental Redemption Amount calculations
 assuming an Adjustment Factor of 1.0% per year (the midpoint of the expected
 range of 0.75% and 1.25%):
 
 EXAMPLE 1--Adjusted Ending Value is less than the Starting Value at the
 maturity date:
 
  Hypothetical Starting Value: 23.17
  Hypothetical Ending Value: 24.33
  Hypothetical Adjusted Ending Value: 22.68

<TABLE> 
<S>                                                                         <C> 
                                                                            (Supplemental 
                                                  (22.68 - 23.17)           Redemption    
 Supplemental Redemption Amount (per Unit) = $10 X -------------  = $0.00   Amount cannot be 
                                                  (    23.17    )           less than zero) 
</TABLE> 
                                                                   
  TOTAL VALUE OF SHARES DELIVERED AT MATURITY (PER UNIT) = $10 + $0 = $10
 
 EXAMPLE 2--Adjusted Ending Value is greater than the Starting Value at the
 maturity date:
 
  Hypothetical Starting Value: 23.17
  Hypothetical Ending Value: 37.07
  Hypothetical Adjusted Ending Value: 34.57
                                                  (34.57 - 23.17)
 Supplemental Redemption Amount (per Unit) = $10 X ------------- = $4.92
                                                  (    23.17    )
 
  TOTAL VALUE OF SHARES DELIVERED AT MATURITY (PER UNIT) = $10 + $4.92 = $14.92
 
 
HOW IS THE NET ASSET VALUE DETERMINED?
 
      The "NET ASSET VALUE" means the net asset value per share of the Energy
SPDR Fund as determined by the Energy SPDR Fund. The Energy SPDR Fund
calculates its Net Asset Value per share by dividing the value of its net
assets (i.e., the value of its total assets less total liabilities) by its
total number of shares outstanding. Expenses and fees, including the
management, administration and distribution fees, of the Energy SPDR Fund are
accrued daily and taken into account for purposes of determining Net Asset
Value. The Net Asset Value per share of the Energy SPDR Fund is determined by
the Energy SPDR Fund each Business Day after the close of trading on the New
York Stock Exchange (ordinarily 4:00 p.m., New York time). Shares of the Energy
SPDR Fund are listed on the AMEX under the trading symbol "XLE".
 
WHEN WILL I RECEIVE CASH INSTEAD OF SHARES OF THE ENERGY SPDR FUND?
 
      If we choose to pay you the amount due to you at maturity in cash instead
of in shares of the Energy SPDR Fund which you would otherwise be entitled to
receive, we will pay you an amount of cash equal to the sum of the Principal
Amount and the Supplemental Redemption Amount, if any. In addition, if at any
time MLPF&S ceases to be a soliciting dealer in the shares of the Energy SPDR
Fund, we will pay the amount due to you in cash instead of shares. Please see
the section entitled "Description of the MITTS Securities--Delivery at
Maturity" in this prospectus supplement.
 
      In addition, in the event that we choose to deliver shares of the Energy
SPDR Fund at maturity, we will not distribute any fractional shares to you. We
will aggregate all amounts due to you in respect of the total number of Units
you hold on the stated maturity date, and in lieu of delivering to you any
fractional shares of the Energy SPDR Fund to which you would otherwise be
entitled, we will pay you the cash value of such fractional shares based on the
Net Asset Value per share of the Energy SPDR Fund shortly before maturity.
 
                                      S-6
<PAGE>
 
 
WILL I BE CHARGED ANY TRANSACTION FEES OR EXPENSES WITH RESPECT TO THE SHARES
OF THE ENERGY SPDR FUND?
 
      Unless and until we deliver shares of the Energy SPDR Fund to you in
satisfaction of our obligations under the MITTS Securities, you will not be
directly charged any management, administration, distribution or other
transaction fees or other expenses with respect to the shares of the Energy
SPDR Fund. However, because the Energy SPDR Fund accrues such fees and expenses
daily for purposes of determining the Net Asset Value of its shares, the Net
Asset Values used to calculate your Supplemental Redemption Amount will reflect
the deduction of such fees and expenses as well as the reduction resulting from
the application of the Adjustment Factor.
 
      If at maturity we deliver to you shares of the Energy SPDR Fund, you will
then become directly subject to ongoing account maintenance fees and certain
other transaction expenses with respect to your shares so long as you hold such
shares.
 
      The accompanying Fund Prospectus describes the fees and expenses charged
by the Energy SPDR Fund in greater detail.
 
WHAT IS THE ENERGY SPDR FUND?
 
      The Energy SPDR Fund is an index fund whose stated investment objective
is to provide investment results that, before expenses, correspond generally to
the price and yield performance of the publicly traded equity securities
comprising the Energy Select Sector Index. The Energy Select Sector Index
consists of the equity securities of publicly traded companies that are
components of the S&P 500 Index and are involved in the development and
production of energy products. Companies in the Energy Select Sector Index
develop and produce crude oil and natural gas, and provide drilling and other
energy related services. As of January 5, 1999, the Energy Select Sector Index
included 31 component stocks. A list of these securities and their index
weightings as of such date is set forth under the section "The Energy SPDR
Fund--General" in this prospectus supplement. Our affiliate, MLPF&S, is both a
soliciting dealer in the shares of the Energy SPDR Fund and the Index
Compilation Agent for the Energy Select Sector Index. We are not affiliated
with the Energy SPDR Fund or the Energy Select Sector Index. The Energy SPDR
Fund will not receive any of the proceeds from the sale of, or have any
obligations under, the MITTS Securities. You should independently decide
whether an investment in the MITTS Securities and the Energy SPDR Fund is
appropriate for you.
 
      The Energy SPDR Fund is one of nine investment funds comprising the
Select Sector SPDR Trust (the "TRUST"), a management investment company
registered under the Investment Company Act of 1940, as amended (the "1940
ACT"). Each fund's investment portfolio is comprised principally of constituent
companies whose equity securities are components of the S&P 500 Index, each
representing one of nine specified market sector indices. Each stock in the S&P
500 Index is allocated to only one Select Sector Index. The combined companies
of the nine Select Sector Indices represent all of the companies whose stocks
are components of the S&P 500 Index.
 
      You should carefully read the Fund Prospectus accompanying this
prospectus supplement and prospectus of the Company to fully understand the
operation and management of the Energy SPDR Fund. In addition, because the
Trust is subject to the registration requirements of the Securities Act of
1933, as amended (the "ACT"), and the 1940 Act, the Trust is required to file
periodically certain information specified by the Securities and Exchange
Commission (the "SEC"). For more information about the Energy SPDR Fund and the
shares that you may receive at maturity, information provided to or filed with
the SEC by the Trust can be inspected at the SEC's public reference facilities
or accessed over the Internet through a web site maintained by the SEC at
http://www.sec.gov. You may also obtain copies of such documents at no cost by
calling the Trust at (800) 843-2639 or by writing the Trust c/o ALPS Mutual
Funds Services, Inc., at 370 17th Street, Suite 3100, Denver, CO 80202. Neither
the Fund Prospectus nor such other documents are incorporated by reference
herein, and we make no representation or warranty as to the accuracy or
completeness of such information.
 
                                      S-7
<PAGE>
 
 
WHAT ABOUT TAXES?
 
      Each year, even though you will not receive any payments from us until
maturity, you will be required to pay taxes on ordinary income from the MITTS
Securities over their term based upon an estimated yield for the MITTS
Securities. We have determined this estimated yield, in accordance with
regulations issued by the Treasury Department, solely in order for you to
figure the amount of taxes that you will owe each year as a result of owning a
MITTS Security. This amount is neither a prediction nor a guarantee of what the
actual Supplemental Redemption Amount will be, or that the actual Supplemental
Redemption Amount will even exceed zero. We have determined that this estimated
yield will equal  % per annum (compounded semiannually).
 
      Based upon this estimated yield, if you pay your taxes on a calendar year
basis and if you buy a MITTS Security for $10 and hold the MITTS Security until
maturity, you will be required to pay taxes on the following amounts of
ordinary income from the MITTS Securities each year: $   in 1999, $   in 2000,
$   in 2001, $   in 2002, $   in 2003, $   in 2004, $   in 2005 and $   in
2006. However, in 2006, the amount of ordinary income that you will be required
to pay taxes on from owning a MITTS Security may be greater or less than $   ,
depending upon the Supplemental Redemption Amount, if any, you receive. Also,
if the Supplemental Redemption Amount is less than $   , you may have a loss
which you could deduct against other income you may have in 2006; but under
current tax regulations, you would neither be required nor permitted to amend
your tax returns for prior years. If you receive shares of the Energy SPDR Fund
on the stated maturity date, your aggregate initial tax basis in such shares of
the Energy SPDR Fund should be an amount equal to the sum of $10 and the
Supplemental Redemption Amount (less any cash received by you). Your holding
period for any shares of the Energy SPDR Fund that you receive on the stated
maturity date should begin on the day immediately following the stated maturity
date. For further information, see "United States Federal Income Taxation" in
this prospectus supplement.
 
WILL THE MITTS SECURITIES BE LISTED ON A STOCK EXCHANGE?
 
      The MITTS Securities have been approved for listing on the AMEX under the
symbol "ESM", subject to official notice of issuance. You should be aware that
the listing of the MITTS Securities on the AMEX will not necessarily ensure
that a liquid trading market will be available for the MITTS Securities. You
should review the section entitled "Risk Factors--Uncertain trading market" in
this prospectus supplement.
 
WHAT IS THE ROLE OF OUR SUBSIDIARY, MLPF&S?
 
      Our subsidiary, MLPF&S, is the underwriter for the offering and sale of
the MITTS Securities. After the initial offering, MLPF&S intends to buy and
sell MITTS Securities to create a secondary market for holders of the MITTS
Securities, and may stabilize or maintain the market price of the MITTS
Securities during the initial distribution of the MITTS Securities. However,
MLPF&S will not be obligated to engage in any of these market activities, or
continue them once it has started.
 
      MLPF&S will also be our agent (the "CALCULATION AGENT") for purposes of
calculating the Adjusted Ending Value and the Supplemental Redemption Amount.
Under certain circumstances, these duties could result in a conflict of
interest between MLPF&S's status as a subsidiary of the Company and its
responsibilities as Calculation Agent.
 
      MLPF&S also is a soliciting dealer in the shares of the Energy SPDR Fund
and is the Index Compilation Agent for the Energy Select Sector Index. Under
certain circumstances, these duties could result in a conflict of interest
between MLPF&S's status as a subsidiary of the Company and its responsibilities
to the Energy SPDR Fund and the Energy Select Sector Index. Please see the
section entitled "Risk Factors--Potential conflicts" in this prospectus
supplement.
 
CAN YOU TELL ME MORE ABOUT THE COMPANY?
 
      Merrill Lynch & Co., Inc. is a holding company with various subsidiary
and affiliated companies that provide investment, financing,
 
                                      S-8
<PAGE>
 
insurance and related services on a global basis. For information about the
Company, see the section entitled "Merrill Lynch & Co., Inc." in the prospectus
of the Company attached hereto. You should also read the other documents the
Company has filed with the SEC, which you can find by referring to the section
"Where You Can Find More Information" in this prospectus supplement.
 
ARE THERE ANY RISKS ASSOCIATED WITH MY INVESTMENT?
 
      Yes, the MITTS Securities are subject to certain risks. Please refer to
the section "Risk Factors" in this prospectus supplement.
 
                                      S-9
<PAGE>
 
                      WHERE YOU CAN FIND MORE INFORMATION
 
THE COMPANY
 
      We file reports, proxy statements and other information with the SEC. Our
SEC filings are also available over the Internet at the SEC's web site at
http://www.sec.gov. You may also read and copy any document we file at the
SEC's public reference rooms in Washington, D.C., New York, New York and
Chicago, Illinois. Please call the SEC at 1-800-SEC-0330 for more information
on the public reference rooms and their copy charges. You may also inspect our
SEC reports and other information at the New York Stock Exchange ("NYSE"), 20
Broad Street, New York, New York 10005.
 
      We have filed a registration statement on Form S-3 with the SEC covering
the securities. For further information on the Company and the securities, you
should refer to our registration statement and its exhibits. The prospectus of
the Company accompanying this prospectus supplement summarizes material
provisions of contracts and other documents that we refer you to. Because the
prospectus of the Company may not contain all the information that you may find
important, you should review the full text of these documents. We have included
copies of these documents as exhibits to our registration statement.
 
THE ENERGY SPDR FUND
 
      The Trust is subject to the registration requirements of the Act and the
1940 Act and is required to file periodically certain information specified by
the SEC. For more information about the Energy SPDR Fund and the shares that
you may receive at maturity, information provided to or filed with the SEC by
the Trust can be inspected at the SEC's public reference facilities or accessed
over the Internet through its web site. You may also obtain copies of such
documents at no cost by calling the Trust at (800) 843-2639 or by writing the
Trust c/o ALPS Mutual Funds Services, Inc., at 370 17th Street, Suite 3100,
Denver, CO 80202. Neither the Fund Prospectus nor such other documents are
incorporated by reference herein, and we make no representation or warranty as
to the accuracy or completeness of such information.
 
                                  RISK FACTORS
 
      Your investment in the MITTS Securities will involve certain risks. For
example, there is the risk that you might not earn a return on your investment,
and the risk that you will be unable to sell your MITTS Securities prior to
their maturity. You should carefully consider the following discussion of risks
before deciding whether an investment in the MITTS Securities is suitable for
you.
 
GENERAL
 
      The MITTS Securities combine features of equity and debt instruments. For
example, as a holder of the MITTS Securities, unlike a holder of shares of the
Energy SPDR Fund, you will not be entitled to receive distributions, if any,
that may be payable on such shares. In addition, the terms of the MITTS
Securities differ from the terms of ordinary debt securities in that the
Supplemental Redemption Amount payable at maturity is not a fixed amount, but
is based on the Net Asset Value per share of the Energy SPDR Fund (as reduced
by the Adjustment Factor) determined on five (or, under certain circumstances,
fewer than five) Trading Days shortly before the maturity date. Because the Net
Asset Value per share of the Energy SPDR Fund is subject to market
fluctuations, you may not receive any Supplemental Redemption Amount and, in
such case, the amount of cash or the value of the shares of the Energy SPDR
Fund paid to you at maturity, determined as described herein, will be equal to
only the Principal Amount of your MITTS Securities.
 
THE SUPPLEMENTAL REDEMPTION AMOUNT
 
      You should be aware that if the Adjusted Ending Value does not exceed the
Starting Value at the stated maturity date, the Supplemental Redemption Amount
will be zero. This will be true even if the Net Asset Value per share of the
Energy SPDR Fund, as reduced by the Adjustment Factor, was higher than the
 
                                      S-10
<PAGE>
 
Starting Value at some time during the life of the MITTS Securities but later
falls below the Starting Value. If the Supplemental Redemption Amount is zero,
we will pay you only the Principal Amount of your MITTS Securities.
 
YOUR RETURN WILL NOT REFLECT THE RETURN OF OWNING SHARES OF THE ENERGY SPDR
FUND OR THE SECURITIES AND OTHER ASSETS COMPRISING THE ENERGY SPDR FUND'S
INVESTMENT PORTFOLIO
 
      When determining the Supplemental Redemption Amount, if any, paid to you
at maturity, the Energy SPDR Fund's Net Asset Value per share, which reflects
the reduction of fund assets resulting from the accrual of the Energy SPDR
Fund's fees and expenses and any distributions made by the Energy SPDR Fund,
will also be reduced by the application of the Adjustment Factor. Consequently,
your return on the MITTS Securities will not reflect the return of owning the
shares of the Energy SPDR Fund or the securities and other assets comprising
the Energy SPDR Fund's investment portfolio.
 
CHANGES IN THE NET ASSET VALUE PER SHARE OF THE ENERGY SPDR FUND WILL NOT
EXACTLY MIRROR CHANGES IN THE ENERGY SELECT SECTOR INDEX
 
      As indicated in the Fund Prospectus, the Energy SPDR Fund's investment
objective is to provide investment results that, before expenses, correspond
generally to the price and yield performance of the publicly traded equity
securities comprising the Energy Select Sector Index. However, because the
Energy SPDR Fund's investment portfolio may not hold all of the stocks in the
Energy Select Sector Index or may not hold each stock in the same weighting as
the Energy Select Sector Index, because the Energy SPDR Fund may hold other
assets and because the Net Asset Value per share of the Energy SPDR Fund
reflects the reduction of fund assets resulting from the accrual of fees and
expenses and the payment of distributions, if any, changes in the value of the
Energy Select Sector Index and in the Net Asset Value per share of the Energy
SPDR Fund are not expected to be identical. As stated in the Fund Prospectus,
the investment adviser to the Energy SPDR Fund believes that "over time, the
"tracking error' of the Energy SPDR Fund relative to the performance of the
Energy Select Sector Index, adjusted for the effect of the Energy SPDR Fund's
expenses, will be less than 5%". There is no assurance that the tracking error
will not be greater than 5% at any time, including the time that you may wish
to sell your MITTS Securities before the maturity date or at the time the
Calculation Agent determines the Supplemental Redemption Amount, if any.
 
YOUR YIELD MAY BE LOWER THAN THE YIELD ON A STANDARD DEBT SECURITY OF
COMPARABLE MATURITY
 
      The amount we pay you at maturity may be less than the return you could
earn on other investments. Your yield may be less than the yield you would earn
if you bought a standard senior non-callable debt security of the Company with
the same maturity date. Your investment may not reflect the full opportunity
cost to you when you take into account factors that affect the time value of
money.
 
UNCERTAIN TRADING MARKET
 
      The MITTS Securities have been approved for listing on the AMEX under the
trading symbol "ESM", subject to official notice of issuance. While there have
been a number of issuances of different series of Market Index Target-Term
Securities, trading volumes have varied historically from one series to another
and it is therefore impossible to predict how the MITTS Securities will trade.
You cannot assume that a trading market will develop for the MITTS Securities.
If such a trading market does develop, there can be no assurance that there
will be liquidity in the trading market. The development of a trading market
for the MITTS Securities will depend on the financial performance of the
Company, and other factors such as the increase, if any, of the Net Asset Value
per share of the Energy SPDR Fund.
 
      If the trading market for the MITTS Securities is limited, there may be a
limited number of buyers when you decide to sell your MITTS Securities if you
do not wish to hold your investment until maturity. This may affect the price
you receive.
 
FACTORS AFFECTING THE TRADING VALUE OF THE MITTS SECURITIES
 
      We believe that the market value of the MITTS Securities will be affected
by the Net Asset Value per share of the Energy SPDR Fund and by a number of
other factors. Some of these factors are interrelated in
 
                                      S-11
<PAGE>
 
complex ways; as a result, the effect of any one factor may be offset or
magnified by the effect of another factor. The following paragraphs describe
the expected impact on the market value of the MITTS Securities given a change
in a specific factor, assuming all other conditions remain constant.
 
  . NET ASSET VALUE. We expect that the market value of the MITTS Securities
    will depend substantially on the amount by which the Net Asset Value per
    share of the Energy SPDR Fund, as reduced by the Adjustment Factor,
    exceeds the Starting Value. Even if you choose to sell your MITTS
    Securities when the Net Asset Value per share of the Energy SPDR Fund, as
    reduced by the Adjustment Factor, exceeds the Starting Value, you may
    receive substantially less than the amount that would be payable at
    maturity based on such value because of the expectation that the Net
    Asset Value will continue to fluctuate until the Adjusted Ending Value is
    determined. If prior to the maturity date you choose to sell your MITTS
    Securities when the Net Asset Value per share of the Energy SPDR Fund (as
    adjusted by the Adjustment Factor) is below or not sufficiently above the
    Starting Value, you may receive less than the $10 Principal Amount per
    Unit of MITTS Securities.
 
  . INTEREST RATES. Because the MITTS Securities repay, at a minimum, the
    Principal Amount at the maturity date, we expect that the trading value
    of the MITTS Securities will be affected by changes in interest rates. In
    general, if U.S. interest rates increase, we expect that the trading
    value of the MITTS Securities will decrease and, conversely, if U.S.
    interest rates decrease, we expect that the trading value of the MITTS
    Securities will increase. Interest rates may also affect the U.S. economy
    and, in turn, the Net Asset Value of the Energy SPDR Fund. Rising
    interest rates may lower the Net Asset Value per share of the Energy SPDR
    Fund and, as a result, lower the trading value of the MITTS Securities
    and, conversely, falling interest rates may increase the Net Asset Value
    per share of the Energy SPDR Fund and, as a result, may increase the
    trading value of the MITTS Securities.
 
  . VOLATILITY. Volatility is the term used to describe the size and
    frequency of market fluctuations. Generally, if the volatility of the Net
    Asset Value per share of the Energy SPDR Fund increases, we expect that
    the trading value of the MITTS Securities will increase and, conversely,
    if the volatility of the Net Asset Value per share of the Energy SPDR
    Fund decreases, we expect that the trading value of the MITTS Securities
    will decrease.
 
  . TIME REMAINING TO MATURITY. We anticipate that before their maturity the
    MITTS Securities may trade at a value above that which would be expected
    based on interest rates and the Net Asset Value per share of the Energy
    SPDR Fund. This difference will reflect a "time premium" due to
    expectations concerning the Net Asset Value per share of the Energy SPDR
    Fund during the period before the maturity of the MITTS Securities.
    However, as the time remaining to the maturity of the MITTS Securities
    decreases, we expect that this time premium will decrease, lowering the
    trading value of the MITTS Securities.
 
  . DIVIDEND YIELDS. Generally, if dividend yields on the stocks comprising
    the Energy SPDR Fund increase, we expect that the trading value of the
    MITTS Securities will decrease, and conversely, if dividend yields on the
    stocks comprising the Energy SPDR Fund's investment portfolio decrease,
    we expect that the trading value of the MITTS Securities will increase.
 
  . COMPANY CREDIT RATINGS. Actual or anticipated changes in our credit
    ratings may affect the trading value of the MITTS Securities.
 
      It is important for you to understand that the impact of one of the
factors specified above, such as an increase in interest rates, may offset some
or all of any increase in the trading value of the MITTS Securities
attributable to another factor, such as an increase in the Net Asset Value per
share of the Energy SPDR Fund.
 
      In general, assuming all other relevant factors are held constant, we
expect that the effect on the trading value of the MITTS Securities of a given
change in any one of the factors listed above will be less if it occurs later
in the term of the MITTS Securities than if it occurs earlier in the term of
the MITTS Securities. However, we expect that the effect on the trading value
of the MITTS Securities of an increase or decrease in the Net Asset Value per
share of the Energy SPDR Fund will be greater if it occurs later in the term of
the MITTS Securities than if it occurs earlier in the term of the MITTS
Securities.
 
                                      S-12
<PAGE>
 
ABSENCE OF PRIOR ACTIVE MARKET FOR SHARES OF THE ENERGY SPDR FUND
 
      The Energy SPDR Fund is a recently organized investment company and there
is limited operating history available. Although such shares are listed for
trading on the AMEX and a number of similar products have been traded on the
AMEX for varying periods of time, there is no assurance that an active trading
market will develop for the shares of the Energy SPDR Fund. If such a trading
market does develop, there is no assurance that there will be liquidity in the
trading market.
 
CONCENTRATION IN ENERGY-RELATED SECURITIES
 
      Because the Energy SPDR Fund's investment portfolio is predominantly
comprised of securities of companies in the energy-producing field, the value
of the MITTS Securities may be adversely affected by an economic downturn in
the energy industry. The companies whose securities comprise the Energy SPDR
Fund's investment portfolio produce crude oil and natural gas and provide
drilling and other energy production and distribution related services. Stock
prices for these types of companies are affected by supply and demand both for
their specific product or service and for energy products in general. The price
of oil and gas, exploration and production spending, government regulation,
political events and economic conditions will likewise affect the performance
of these companies. Correspondingly, companies in the energy field are subject
to swift energy price and supply fluctuations caused by events relating to
international politics, energy conservation, the results of exploration
projects, and tax and other governmental policies. Weak demand for these
companies' products or services or for energy products and services in general,
as well as negative developments in these other areas, would adversely affect
the performance of the Energy SPDR Fund and in turn, the trading value of the
MITTS Securities.
 
NO AFFILIATION BETWEEN THE COMPANY AND THE ENERGY SPDR FUND
 
      Our affiliate MLPF&S is both a soliciting dealer in the shares of the
Energy SPDR Fund and the Index Compilation Agent for the Energy Select Sector
Index. However, we are not affiliated with the Energy SPDR Fund or the Energy
Select Sector Index. The Energy SPDR Fund has no obligations with respect to
the MITTS Securities or amounts to be paid to you, including any obligation to
take the needs of the Company or of beneficial owners of the MITTS Securities
into consideration for any reason. The Energy SPDR Fund will not receive any of
the proceeds of the offering of the MITTS Securities made hereby and is not
responsible for, and has not participated in, the determination or calculation
of the amount receivable by beneficial owners of the MITTS Securities at
maturity. In addition, the Energy SPDR Fund is not involved with the
administration or trading of the MITTS Securities and has no obligations with
respect to the amount receivable by beneficial owners of the MITTS Securities.
 
NO SHAREHOLDER'S RIGHTS
 
      Unless and until we deliver shares of the Energy SPDR Fund to you at the
maturity of the MITTS Securities, you will not be entitled to any rights with
respect to such shares including, without limitation, the right to receive
distributions on, to vote or to redeem such shares. For example, if the Energy
SPDR Fund sets a record date for a matter to be voted on by shareholders before
our delivery of the shares of the Energy SPDR Fund to you, you will not be
entitled to vote on any such matter.
 
STATE LAW LIMITS ON INTEREST PAID
 
      New York State law governs the 1983 Indenture, as defined herein. New
York has certain usury laws that limit the amount of interest that can be
charged and paid on loans, which includes debt securities like the MITTS
Securities. Under present New York law, the maximum rate of interest is 25% per
annum on a simple interest basis. This limit may not apply to debt securities
in which $2,500,000 or more has been invested.
 
      While we believe that New York law would be given effect by a state or
Federal court sitting outside of New York, many other states also have laws
that regulate the amount of interest that may be charged to and paid by a
borrower. We will promise, for the benefit of the holders of the MITTS
Securities, to the extent permitted by law, not to voluntarily claim the
benefits of any laws concerning usurious rates of interest.
 
                                      S-13
<PAGE>
 
POTENTIAL CONFLICTS
 
      The Calculation Agent is one of our subsidiaries. Under certain
circumstances, MLPF&S's role as our subsidiary and its responsibilities as
Calculation Agent for the MITTS Securities could give rise to conflicts of
interests between the Calculation Agent and the holders of the MITTS
Securities. Such conflicts could occur, for instance, in connection with the
Calculation Agent's determination as to whether a Market Disruption Event (as
defined below) has occurred.
 
      MLPF&S is a soliciting dealer in the shares of the Energy SPDR Fund.
Under certain circumstances, MLPF&S's role as Calculation Agent and its role as
a soliciting dealer in such shares could give rise to conflicts of interests
between the Calculation Agent and holders of the MITTS Securities. Such
conflicts could occur in connection with the Calculation Agent's determination
as to the Adjusted Ending Value and the number of shares to be delivered at
maturity.
 
      Additionally, MLPF&S serves as Index Compilation Agent for the Energy
Select Sector Index. In its capacity as Index Compilation Agent, MLPF&S
determines, in consultation with S&P, which securities of the S&P 500 are to be
included in the Energy Select Sector Index. Under certain circumstances,
MLPF&S's role as Calculation Agent and its role as Index Compilation Agent
could give rise to conflicts of interests between the Calculation Agent and
holders of the MITTS Securities.
 
      MLPF&S is required to carry out its duties as Calculation Agent in good
faith and using its reasonable judgment. However, you should be aware that
because we control the Calculation Agent, potential conflicts of interest could
arise.
 
      We anticipate entering into an arrangement with one of our subsidiaries
to hedge the market risks associated with our obligation to pay amounts due
under the MITTS Securities. Such subsidiary expects to make a profit in
connection with such arrangement. We did not seek competitive bids for such an
arrangement from unaffiliated parties.
 
UNCERTAIN TAX CONSEQUENCES
 
      You should also consider the tax consequences of investing in the MITTS
Securities, certain aspects of which are uncertain. See "United States Federal
Income Taxation" below.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
      In 1998, the Company acquired the outstanding shares of Midland Walwyn
Inc. ("Midland"), in a transaction accounted for as a pooling-of-interests. The
following information has been restated, except as noted in note (a) below, as
if the Company and Midland had always been combined.
 
      The following table sets forth the historical ratios of earnings to fixed
charges of the Company for the periods indicated:
 
<TABLE>
<CAPTION>
                                       YEAR ENDED LAST FRIDAY IN   NINE MONTHS
                                               DECEMBER               ENDED
                                      --------------------------- SEPTEMBER 25,
                                      1993(a) 1994 1995 1996 1997     1998
                                      ------- ---- ---- ---- ---- -------------
<S>                                   <C>     <C>  <C>  <C>  <C>  <C>
Ratio of earnings to fixed charges...   1.4   1.2  1.2  1.2  1.2       1.1
</TABLE>
- --------
(a) 1993 information has not been restated for the Midland merger. The effect
    of combining Midland on this ratio would not be material.
 
      For the purpose of calculating the ratio of earnings to fixed charges,
"earnings" consist of earnings from continuing operations before income taxes
and fixed charges. "Fixed charges" consist of interest costs, amortization of
debt expense, preferred stock dividend requirements of majority-owned
subsidiaries, and that portion of rentals estimated to be representative of the
interest factor.
 
                                      S-14
<PAGE>
 
                      DESCRIPTION OF THE MITTS SECURITIES
 
GENERAL
 
      The MITTS Securities are to be issued as a series of Senior Debt
Securities under the Senior Indenture, referred to as the "1983 Indenture",
which is more fully described in the accompanying Prospectus. The MITTS
Securities will mature on January   , 2006.
 
      While at maturity a beneficial owner of a MITTS Security will receive the
number of shares of the Energy SPDR Fund (or cash with an equal value) equal in
value (determined based on the Ending Value) to the sum of the Principal Amount
of such MITTS Security plus the Supplemental Redemption Amount, if any, there
will be no other payment of interest, periodic or otherwise. See "Delivery at
Maturity".
 
      The MITTS Securities are not subject to redemption by the Company or at
the option of any beneficial owner prior to maturity. Upon the occurrence of an
Event of Default with respect to the MITTS Securities, beneficial owners of the
MITTS Securities may accelerate the maturity of the MITTS Securities, as
described under "Description of the MITTS Securities--Events of Default and
Acceleration" in this prospectus supplement and "Description of Debt
Securities--General--Events of Default" in the accompanying prospectus.
 
      The MITTS Securities are to be issued in denominations of whole Units.
 
      The MITTS Securities do not have the benefit of any sinking fund.
 
DELIVERY AT MATURITY
 
 "General"
 
      At maturity, a beneficial owner of a MITTS Security will be entitled to
receive the number of shares of the Energy SPDR Fund (or cash with an equal
value) equal in value (determined based on the Ending Value) to the Principal
Amount of such MITTS Security plus the Supplemental Redemption Amount, if any,
all as provided below. The amount to be paid by the Company to any holder of
the MITTS Securities on the maturity date will be aggregated based on the total
number of Units then held by such holder and rounded to the nearest cent. If
the Adjusted Ending Value does not exceed the Starting Value, a beneficial
owner of a MITTS Security will be entitled to receive only the number of shares
of the Energy SPDR Fund (or cash with an equal value) equal in value
(determined based on the Ending Value) to the Principal Amount of such MITTS
Security.
 
      If the Company chooses to deliver shares of the Energy SPDR Fund to
holders of the MITTS Securities at the maturity date, the Company or one of its
affiliates will deliver shares of the Energy SPDR Fund that are then newly
issued by the Energy SPDR Fund.
 
      The Company may, at its option, in lieu of delivering shares of the
Energy SPDR Fund, pay cash in an amount equal to the sum of the Principal
Amount of the MITTS Securities and the Supplemental Redemption Amount, if any.
In addition, if at any time MLPF&S ceases to be a soliciting dealer in the
shares of the Energy SPDR Fund, the Company will pay the amount due to holders
of the MITTS Securities in cash instead of shares.
 
 "Determination of the Supplemental Redemption Amount"
 
      The Supplemental Redemption Amount for a MITTS Security will be
determined by the Calculation Agent and will equal:
 
<TABLE>
  <S>                             <C>
                                                                         
  Principal Amount of such MITTS (Adjusted Ending Value - Starting Value)
   Security ($10 per Unit) X      --------------------------------------
                                 (            Starting Value            )
</TABLE>
                                                                              
 
 
"provided", "however", that in no event will the Supplemental Redemption Amount
be less than zero.
 
                                      S-15
<PAGE>
 
      The "Starting Value" means the Net Asset Value of one share of the
Energy SPDR Fund on the Pricing Date. We will disclose the Starting Value in
the final prospectus supplement delivered to you in connection with sales of
the MITTS Securities.
 
      "Net Asset Value" means the net asset value per share of the Energy SPDR
Fund as determined by the Energy SPDR Fund. The Energy SPDR Fund calculates
its Net Asset Value per share by dividing the value of its net assets (i.e.,
the value of its total assets less total liabilities) by its total number of
shares outstanding. Expenses and fees, including the management,
administration and distribution fees, of the Energy SPDR Fund are accrued
daily and taken into account for purposes of determining its Net Asset Value.
The Net Asset Value per share of the Energy SPDR Fund is determined by the
Energy SPDR Fund each Business Day after the close of trading on the New York
Stock Exchange (ordinarily 4:00 p.m., New York time). Shares of the Energy
SPDR Fund are listed on the AMEX under the trading symbol "XLE".
 
      The "Adjusted Ending Value" will be determined by the Calculation Agent
and will equal the Ending Value, as reduced by the application of the
Adjustment Factor on each Calculation Day.
 
      The "Ending Value" will equal the average (arithmetic mean) of the Net
Asset Values per share of the Energy SPDR Fund on each of the first five
Calculation Days during the Calculation Period. If there are fewer than five
Calculation Days in the Calculation Period, the Ending Value will equal the
average (arithmetic mean) of the Net Asset Values of the Energy SPDR Fund on
each of such Calculation Days, and if there is only one Calculation Day, then
the Ending Value will be equal to the Net Asset Value per share of the Energy
SPDR Fund on such Calculation Day. If no Calculation Days occur during the
Calculation Period because of Market Disruption Events, then the Ending Value
shall mean the Net Asset Value per share of the Energy SPDR Fund on the last
Trading Day prior to the Calculation Period for which a Net Asset Value per
share of the Energy SPDR Fund was determined.
 
      The Adjustment Factor is expected to be between 0.75% and 1.25% per year
and will be prorated based on a 365-day year and applied each calendar day to
reduce the Ending Value used to calculate the Supplemental Redemption Amount.
We will determine the Adjustment Factor on the Pricing Date and it will appear
in the final prospectus supplement delivered in connection with sales of the
MITTS Securities. As a result of the application of the Adjustment Factor, the
adjusted Net Asset Value of one share of the Energy SPDR Fund used to
calculate the Supplemental Redemption Amount at the maturity of the MITTS
Securities will be approximately 5.11% to 8.38% less than the actual Net Asset
Value per share of the Energy SPDR Fund on any day during the Calculation
Period.
 
      The "Calculation Period" means the period from and including the seventh
scheduled Calculation Day prior to the Maturity Date to and including the
second scheduled Calculation Day prior to maturity.
 
      "Calculation Day" means any Trading Day on which a Market Disruption
Event has not occurred.
 
      "Trading Day" is a day on which the shares of the Energy SPDR Fund (A)
are not suspended from trading on any national or regional securities exchange
or association or over-the-counter market at the close of business and (B)
have traded at least once on a national or regional securities exchange or
association or over-the-counter market that is the primary market for the
trading of the shares of the Energy SPDR Fund.
 
FRACTIONAL SHARES
 
      No fractional shares of the Energy SPDR Fund will be distributed by the
Company at maturity. In the event the Company elects to pay holders of the
MITTS Securities in shares of the Energy SPDR Fund, all amounts due to any
holder of the MITTS Securities in respect of the total number of Units held by
such holder will be aggregated, and in lieu of delivering any fractional share
to such holder, such holder will receive the cash value of such fractional
share based on the Ending Value.
 
                                     S-16
<PAGE>
 
HYPOTHETICAL RETURNS
 
      The following table illustrates, for a range of hypothetical Ending
Values, (i) the Adjusted Ending Value used to calculate the Supplemental
Redemption Amount, (ii) the percentage change from the Starting Value to the
Adjusted Ending Value, (iii) the Principal Amount and Supplemental Redemption
Amount, if any, paid at maturity for each Unit, (iv) the total rate of return
to beneficial owners of the MITTS Securities, (v) the pretax annualized rate of
return to beneficial owners of MITTS Securities, and (vi) the pretax annualized
rate of return of an investment in shares of the Energy SPDR Fund. This table
assumes an Adjustment Factor of 1.0% per annum (the midpoint of the expected
range of 0.75% to 1.25%).
 
<TABLE>
<CAPTION>
                                                                                                        PRETAX
                                      PERCENTAGE    PRINCIPAL AMOUNT                    PRETAX        ANNUALIZED
   HYPOTHETICAL                        CHANGE OF    AND SUPPLEMENTAL  TOTAL RATE OF   ANNUALIZED    RATE OF RETURN
   ENDING VALUE      HYPOTHETICAL   ADJUSTED ENDING    REDEMPTION     RETURN ON THE RATE OF RETURN OF SHARES OF THE
    DURING THE      ADJUSTED ENDING VALUE OVER THE   AMOUNT PAID AT       MITTS      ON THE MITTS    ENERGY SPDR
CALCULATION PERIOD       VALUE      STARTING VALUE  MATURITY PER UNIT  SECURITIES   SECURITIES(1)     FUND(1)(2)
- ------------------  --------------- --------------- ----------------- ------------- -------------- ----------------
<S>                 <C>             <C>             <C>               <C>           <C>            <C>
       4.63               4.32          -81.35%          $10.00            0.00%         0.00%          -18.89%
       9.27               8.64          -62.70%          $10.00            0.00%         0.00%          -10.09%
      13.90              12.96          -44.06%          $10.00            0.00%         0.00%           -4.64%
      18.54              17.28          -25.41%          $10.00            0.00%         0.00%           -0.62%
      23.17(3)           21.60           -6.76%          $10.00            0.00%         0.00%            2.57%
      27.80              25.92           11.89%          $11.19           11.89%         1.61%            5.23%
      32.44              30.24           30.54%          $13.05           30.54%         3.84%            7.52%
      37.07              34.57           49.18%          $14.92           49.18%         5.80%            9.53%
      41.71              38.89           67.83%          $16.78           67.83%         7.54%           11.33%
      46.34              43.21           86.48%          $18.65           86.48%         9.10%           12.96%
      50.97              47.53          105.13%          $20.51          105.13%        10.53%           14.45%
      55.61              51.85          123.77%          $22.38          123.77%        11.84%           15.82%
      60.24              56.17          142.42%          $24.24          142.42%        13.06%           17.09%
      64.88              60.49          161.07%          $26.11          161.07%        14.19%           18.28%
      69.51              64.81          179.72%          $27.97          179.72%        15.25%           19.40%
</TABLE>
- --------
(1) The annualized rates of return specified in the preceding table are
    calculated on a semiannual bond equivalent basis.
(2) This rate of return assumes, (i) a constant dividend yield of 2.57% per
    annum, paid quarterly from the date of the initial delivery of the MITTS
    Securities, applied to the Net Asset Value per share of the Energy SPDR
    Fund at the end of each such quarter, assuming the Net Asset Value per
    share of the Energy SPDR Fund increases or decreases linearly from the
    Starting Value to the hypothetical Ending Value during the Calculation
    Period; (ii) no transaction fees or expenses in connection with the
    purchase of the MITTS Securities; (iii) a seven-year investment term; and
    (iv) a Net Asset Value per share of the Energy SPDR Fund on the maturity
    date equal to the Ending Value.
(3) This is the hypothetical Starting Value for purposes of this table. The
    actual Starting Value will equal the Net Asset Value per share of the
    Energy SPDR Fund on the Pricing Date.
 
      The above figures are for purposes of illustration only. The actual
Supplemental Redemption Amount and the total and pretax annualized rate of
return resulting therefrom will depend entirely on the Starting Value and the
actual Adjusted Ending Value determined by the Calculation Agent as provided
herein.
 
ADJUSTMENTS TO THE NET ASSET VALUE; MARKET DISRUPTION EVENTS
 
      If at any time the shares of the Energy SPDR Fund are subject to a split
or reverse split, the Calculation Agent shall adjust the Net Asset Value per
share of the Energy SPDR Fund used to calculate the
 
                                      S-17
<PAGE>
 
Ending Value in order to arrive at a Net Asset Value per share of the Energy
SPDR Fund as if such split or reverse split, as the case may be, had not
occurred.
 
      "Market Disruption Event" means any of the following events, as
determined by the Calculation Agent:
 
    (a) the suspension or material limitation on trading (limitations
        pursuant to NYSE Rule 80A (or any applicable rule or regulation
        enacted or promulgated by the NYSE or any other self regulatory
        organization or the SEC of similar scope as determined by the
        Calculation Agent) on trading during significant market fluctuations
        shall be considered "material" for purposes of this definition), in
        each case, for more than two hours of trading, or during the one-
        half hour period preceding the close of trading on the applicable
        exchange, in 20% or more of the stocks which then comprise the
        Energy Select Sector Index;
 
    (b) the suspension or material limitation on trading, in each case, for
        more than two hours of trading (whether by reason of movements in
        price otherwise exceeding levels permitted by the relevant exchange
        or otherwise) in option contracts related to the shares of the
        Energy SPDR Fund which are traded on any major U.S. exchange; or
 
    (c) the Energy SPDR Fund (1) is unable or otherwise fails to issue a Net
        Asset Value for any shares of the Energy SPDR Fund after the close
        of business on the NYSE or (2) suspends the creation or redemption
        of shares of the Energy SPDR Fund.
 
      For the purposes of paragraphs (a) and (b) of this definition, a
limitation on the hours in a trading day and/or number of days of trading will
not constitute a Market Disruption Event if it results from an announced change
in the regular business hours of the relevant exchange.
 
TERMINATION OF THE ENERGY SPDR FUND
 
      If the Energy SPDR Fund is liquidated or otherwise terminated, for
purposes of calculating the Supplemental Redemption Amount payable at the
maturity of the MITTS Securities, the "Net Asset Value" will be calculated by
the Calculation Agent as follows: The Net Asset Value per share of the Energy
SPDR Fund on the Trading Day immediately prior to any liquidating distribution
will equal the Net Asset Value for such day (the "Pre-liquidation Date"). The
Calculation Agent will then calculate the Net Asset Value after the close of
trading on each Trading Day (each such date, a "Determination Date") after the
Pre-liquidation Date by increasing or decreasing, as the case may be, the Net
Asset Value as of the immediately preceding Trading Day by the percentage by
which the closing value of the Energy Select Sector Index increases or
decreases from such immediately preceding Trading Day to such Determination
Date and further decreasing such Net Asset Value by fees, expenses and non-
liquidating distributions (together, "Fund Expenses") that the Calculation
Agent, in its sole judgment but with reference to the Fund Expenses actually
incurred by the Energy SPDR Fund prior to its liquidation or termination, deems
would reasonably have been accrued and included in the calculation of the Net
Asset Value per share of the Energy SPDR Fund had it not been liquidated or
terminated, from such immediately preceding Trading Day to such Determination
Date. The Calculation Agent will cause notice of each such value to be
published not less often than once each month in "The Wall Street Journal" (or
another newspaper of general circulation) and arrange for information with
respect to such values to be made available by telephone.
 
      If the Energy SPDR Fund is liquidated or otherwise terminated and the
Energy Select Sector Index is no longer calculated or published (an "Index
Termination Event"), the Calculation Agent will select a successor index that
it determines, in its sole discretion, to be comparable to the Energy Select
Sector Index, and, upon the Calculation Agent's notification of such
determination to the Trustee and the Company, the Calculation Agent will
substitute the successor index for the Energy Select Sector Index and calculate
the Net Asset Value in accordance with the procedures referred to in the
immediately preceding paragraph with
 
                                      S-18
<PAGE>
 
reference to such successor index. Upon any selection by the Calculation Agent
of a successor index, the Company shall cause notice thereof to be given to
holders of the MITTS Securities.
 
      In the event that an Index Termination Event occurs and a successor index
to the Energy Select Sector Index is not selected by the Calculation Agent or
is no longer published on any of the Calculation Days, the Calculation Agent
shall compute a substitute index for the Energy Select Sector Index for any
such Calculation Day in accordance with the procedures last used to calculate
the Energy Select Sector Index prior to any such discontinuance. The
Calculation Agent will calculate the Net Asset Value in accordance with the
procedures referred to in the first paragraph of this section with reference to
such substitute index. Upon any selection by the Calculation Agent of such
substitute index, the Company shall cause notice thereof to be given to holders
of the MITTS Securities.
 
      If S&P discontinues publication of the S&P 500 Index subsequent to an
Index Termination Event and (i) a successor index to the Energy Select Sector
Index is not selected by the Calculation Agent or is no longer published on any
of the Calculation Days and (ii) the Calculation Agent is unable to calculate a
substitute index for the Energy Select Sector Index, the Calculation Agent will
compute a substitute index for the S&P 500 Index for any such Calculation Day
in accordance with the procedures last used to calculate the S&P 500 Index
prior to any such discontinuance. If the Calculation Agent calculates such
substitute index for the S&P 500 Index, the Calculation Agent will use such
substitute index to calculate the substitute index for the Energy Select Sector
Index.
 
      Notwithstanding these alternative arrangements, liquidation or
termination of the Energy SPDR Fund or the discontinuance of the publication of
the Energy Select Sector Index or the S&P 500 Index may adversely affect
trading in the MITTS Securities.
 
EVENTS OF DEFAULT AND ACCELERATION
 
      In case an Event of Default with respect to any MITTS Securities shall
have occurred and be continuing, the amount payable to a beneficial owner of a
MITTS Security upon any acceleration permitted by the MITTS Securities, with
respect to each $10 principal amount thereof, will be equal to the Principal
Amount and the Supplemental Redemption Amount, if any, calculated assuming (i)
the date of early repayment is the maturity date of the MITTS Securities and
(ii) the Adjustment Factor is prorated based on a 365-day year and applied each
calendar day to reduce the Net Asset Value per share of the Energy SPDR Fund
used to calculate such Supplemental Redemption Amount. See "Delivery at
Maturity" in this prospectus supplement. If a bankruptcy proceeding is
commenced in respect of the Company, the claim of the beneficial owner of a
MITTS Security may be limited, under Section 502(b)(2) of Title 11 of the
United States Code, to the Principal Amount of the MITTS Security plus an
additional amount of contingent interest calculated as though the date of the
commencement of the proceeding were the maturity date of the MITTS Securities.
 
      In case of default in payment at the maturity date of the MITTS
Securities (whether at their stated maturity or upon acceleration), from and
after the maturity date the MITTS Securities shall bear interest, payable upon
demand of the beneficial owners thereof, at the rate of  % per annum (to the
extent that payment of such interest shall be legally enforceable) on the
unpaid amount due and payable on such date in accordance with the terms of the
MITTS Securities to the date payment of such amount has been made or duly
provided for.
 
DEPOSITARY
 
      Upon issuance, all MITTS Securities will be represented by one or more
fully registered global securities (the "Global Securities"). Each such Global
Security will be deposited with, or on behalf of, The Depository Trust Company
("DTC"; DTC, together with any successor thereto, being a "Depositary"), as
Depositary, registered in the name of Cede & Co. (DTC's partnership nominee).
Unless and until it is exchanged in whole or in part for MITTS Securities in
definitive form, no Global Security may be transferred except as a whole by the
Depositary to a nominee of such Depositary or by a nominee of such Depositary
to
 
                                      S-19
<PAGE>
 
such Depositary or another nominee of such Depositary or by such Depositary or
any such nominee to a successor of such Depositary or a nominee of such
successor.
 
      So long as DTC, or its nominee, is a registered owner of a Global
Security, DTC or its nominee, as the case may be, will be considered the sole
owner or Holder of the MITTS Securities represented by such Global Security for
all purposes under the 1983 Indenture. Except as provided below, the beneficial
owners of the MITTS Securities represented by a Global Security (the
"Beneficial Owners") will not be entitled to have the MITTS Securities
represented by such Global Security registered in their names, will not receive
or be entitled to receive physical delivery of the MITTS Securities in
definitive form and will not be considered the owners or Holders thereof under
the 1983 Indenture, including for purposes of receiving any reports delivered
by the Company or the Trustee pursuant to the 1983 Indenture. Accordingly, each
person owning a beneficial interest in a Global Security must rely on the
procedures of DTC and, if such person is not a participant of DTC (a
"Participant"), on the procedures of the Participant through which such person
owns its interest, to exercise any rights of a Holder under the 1983 Indenture.
The Company understands that under existing industry practices, in the event
that the Company requests any action of Holders or that an owner of a
beneficial interest in such a Global Security desires to give or take any
action which a Holder is entitled to give or take under the 1983 Indenture, DTC
would authorize the Participants holding the relevant beneficial interests to
give or take such action, and such Participants would authorize Beneficial
Owners owning through such Participants to give or take such action or would
otherwise act upon the instructions of Beneficial Owners. Conveyance of notices
and other communications by DTC to Participants, by Participants to Indirect
Participants, as defined below, and by Participants and Indirect Participants
to Beneficial Owners will be governed by arrangements among them, subject to
any statutory or regulatory requirements as may be in effect from time to time.
 
      If (x) the Depositary is at any time unwilling or unable to continue as
Depositary and a successor depositary is not appointed by the Company within 60
days, (y) the Company executes and delivers to the Trustee a Company Order to
the effect that the Global Securities shall be exchangeable or (z) an Event of
Default has occurred and is continuing with respect to the MITTS Securities,
the Global Securities will be exchangeable for MITTS Securities in definitive
form of like tenor and of an equal aggregate principal amount, in denominations
of $10 and integral multiples thereof. Such definitive MITTS Securities will be
registered in such name or names as the Depositary shall instruct the Trustee.
It is expected that such instructions may be based upon directions received by
the Depositary from Participants with respect to ownership of beneficial
interests in such Global Securities.
 
      The following is based on information furnished by DTC:
 
      DTC will act as securities depositary for the MITTS Securities. The MITTS
Securities will be issued as fully registered securities registered in the name
of Cede & Co. (DTC's partnership nominee). One or more fully registered Global
Securities will be issued for the MITTS Securities in the aggregate principal
amount of such issue, and will be deposited with DTC.
 
      DTC is a limited-purpose trust company organized under the New York
Banking Law, a "banking organization" within the meaning of the New York
Banking Law, a member of the Federal Reserve System, a "clearing corporation"
within the meaning of the New York Uniform Commercial Code, and a "clearing
agency" registered pursuant to the provisions of Section 17A of the Securities
Exchange Act of 1934, as amended. DTC holds securities that its Participants
deposit with DTC. DTC also facilitates the settlement among Participants of
securities transactions, such as transfers and pledges, in deposited securities
through electronic computerized book-entry changes in Participants' accounts,
thereby eliminating the need for physical movement of securities certificates.
Direct Participants of DTC ("Direct Participants") include securities brokers
and dealers, banks, trust companies, clearing corporations and certain other
organizations. DTC is owned by a number of its Direct Participants and by The
New York Stock Exchange, Inc., the American Stock Exchange, Inc., and the
National Association of Securities Dealers, Inc. Access to the DTC's system is
also available to others such as securities brokers and dealers, banks and
trust companies that clear through or
 
                                      S-20
<PAGE>
 
maintain a custodial relationship with a Direct Participant, either directly or
indirectly ("Indirect Participants"). The rules applicable to DTC and its
Participants are on file with the SEC.
 
      Purchases of MITTS Securities under DTC's system must be made by or
through Direct Participants, which will receive a credit for the MITTS
Securities on DTC's records. The ownership interest of each Beneficial Owner is
in turn to be recorded on the records of Direct Participants and Indirect
Participants. Beneficial Owners will not receive written confirmation from DTC
of their purchase, but Beneficial Owners are expected to receive written
confirmations providing details of the transaction, as well as periodic
statements of their holdings, from the Direct Participants or Indirect
Participants through which such Beneficial Owner entered into the transaction.
Transfers of ownership interests in the MITTS Securities are to be accomplished
by entries made on the books of Participants acting on behalf of Beneficial
Owners.
 
      To facilitate subsequent transfers, all MITTS Securities deposited with
DTC are registered in the name of DTC's partnership nominee, Cede & Co. The
deposit of MITTS Securities with DTC and their registration in the name of Cede
& Co. effect no change in beneficial ownership. DTC has no knowledge of the
actual Beneficial Owners of the MITTS Securities; DTC's records reflect only
the identity of the Direct Participants to whose accounts such MITTS Securities
are credited, which may or may not be the Beneficial Owners. The Participants
will remain responsible for keeping account of their holdings on behalf of
their customers.
 
      Conveyance of notices and other communications by DTC to Direct
Participants, by Direct Participants to Indirect Participants, and by Direct
Participants and Indirect Participants to Beneficial Owners will be governed by
arrangements among them, subject to any statutory or regulatory requirements as
may be in effect from time to time.
 
      Neither DTC nor Cede & Co. will consent or vote with respect to the MITTS
Securities. Under its usual procedures, DTC mails an Omnibus Proxy to the
Company as soon as possible after the applicable record date. The Omnibus Proxy
assigns Cede & Co.'s consenting or voting rights to those Direct Participants
to whose accounts the MITTS Securities are credited on the record date
(identified in a listing attached to the Omnibus Proxy).
 
      Principal, premium, if any, and/or interest, if any, payments to be made
in cash on the MITTS Securities will be made in immediately available funds to
DTC. DTC's practice is to credit Direct Participants' accounts on the
applicable payment date in accordance with their respective holdings shown on
the Depositary's records unless DTC has reason to believe that it will not
receive payment on such date. Payments by Participants to Beneficial Owners
will be governed by standing instructions and customary practices, as is the
case with securities held for the accounts of customers in bearer form or
registered in "street name", and will be the responsibility of such Participant
and not of DTC, the Trustee or the Company, subject to any statutory or
regulatory requirements as may be in effect from time to time. Payment of
principal, premium, if any, and/or interest, if any, to DTC is the
responsibility of the Company or the Trustee, disbursement of such payments to
Direct Participants shall be the responsibility of DTC, and disbursement of
such payments to the Beneficial Owners shall be the responsibility of Direct
Participants and Indirect Participants.
 
      DTC has advised the Company that management of DTC is aware that some
computer applications, systems, and the like for processing data ("Systems")
that are dependent upon calendar dates, including dates before, on, and after
January 1, 2000, may encounter "Year 2000 problems". DTC has informed Direct
and Indirect Participants and other members of the financial community (the
"Industry") that it has developed and is implementing a program so that its
Systems, as the same relate to the timely payment of distributions (including
principal and interest payments) to securityholders, book-entry deliveries, and
settlement of trades within DTC ("Depositary Services"), continue to function
appropriately. This program includes a technical assessment and a remediation
plan, each of which is complete. Additionally, DTC's plan includes a testing
phase, which is expected to be completed within appropriate time frames.
 
      However, DTC's ability to perform properly its services is also dependent
upon other parties, including, but not limited to, issuers and their agents, as
well as DTC's Direct Participants and Indirect
 
                                      S-21
<PAGE>
 
Participants, and third party vendors from whom DTC licenses software and
hardware, and third party vendors on whom DTC relies for information or the
provision of services, including telecommunication and electrical utility
service providers, among others. DTC has informed the Industry that it is
contacting (and will continue to contact) third party vendors from whom DTC
acquires services to: (i) impress upon them the importance of such services
being Year 2000 compliant; and (ii) determine the extent of their efforts for
Year 2000 remediation (and, as appropriate, testing) of their services. In
addition, DTC is in the process of developing such contingency plans as it
deems appropriate.
 
      According to DTC, the information in the preceding two paragraphs with
respect to DTC has been provided to the Industry for informational purposes
only and is not intended to serve as a representation, warranty, or contract
modification of any kind.
 
      DTC may discontinue providing its services as securities depositary with
respect to the MITTS Securities at any time by giving reasonable notice to the
Company or the Trustee. Under such circumstances, in the event that a successor
securities depositary is not obtained, MITTS Security certificates are required
to be printed and delivered.
 
      The Company may decide to discontinue use of the system of book-entry
transfers through DTC (or a successor securities depositary). In that event,
MITTS Security certificates will be printed and delivered.
 
      The information in this section concerning DTC and DTC's system has been
obtained from sources that the Company believes to be reliable, but the Company
takes no responsibility for the accuracy thereof.
 
SAME-DAY SETTLEMENT AND DELIVERY
 
      Settlement for the MITTS Securities will be made by the underwriter in
immediately available funds. All payments of principal and the Supplemental
Redemption Amount, if any, will be made by the Company, by delivery of shares
of the Energy SPDR Fund in an equivalent value. In the event the Company
elects, at its option, to pay cash in lieu of delivering shares of the Energy
SPDR Fund, the Company will make such payment in immediately available funds so
long as the MITTS Securities are maintained in book-entry form.
 
                              THE ENERGY SPDR FUND
 
GENERAL
 
      THE COMPANY HAS ATTACHED THE FUND PROSPECTUS DESCRIBING THE ENERGY SPDR
FUND AND IS DELIVERING IT TO PURCHASERS OF THE MITTS SECURITIES TOGETHER WITH
THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS OF THE COMPANY FOR
THE CONVENIENCE OF REFERENCE ONLY. THE FUND PROSPECTUS DOES NOT CONSTITUTE A
PART OF THIS PROSPECTUS SUPPLEMENT OR THE ACCOMPANYING PROSPECTUS OF THE
COMPANY, NOR IS IT INCORPORATED BY REFERENCE HEREIN OR THEREIN. THE SUMMARY
DESCRIPTION BELOW IS QUALIFIED IN ITS ENTIRETY BY THE INFORMATION DESCRIBING
THE ENERGY SPDR FUND AND THE ENERGY SELECT SECTOR INDEX INCLUDED IN THE
ATTACHED FUND PROSPECTUS.
 
      As stated in the Fund Prospectus, the Energy SPDR Fund is an index fund
whose investment objective is to provide investment results that, before
expenses, correspond generally to the price and yield performance of the
publicly traded equity securities included in the Energy Select Sector Index.
The Energy Select Sector Index consists of the equity securities of publicly
traded companies that are components of the S&P 500 Index and are involved in
the development and production of energy products. Companies in the Energy
Select Sector Index develop and produce crude oil and natural gas, and provide
drilling and other energy related services. As of January 5, 1999, the Energy
Select Sector Index included 31 component stocks.
 
                                      S-22
<PAGE>
 
      The components of the Energy Select Sector Index by index weight as of
January 5, 1999 are listed below.
 
<TABLE>
<CAPTION>
COMPANY NAME                                         TRADING SYMBOL INDEX WEIGHT
- ------------                                         -------------- ------------
<S>                                                  <C>            <C>
Exxon Corp..........................................      XON          23.80%
Royal Dutch Petroleum Company.......................      RD           16.78%
Mobil Corp..........................................      MOB          10.78%
Chevron Corp........................................      CHV           4.73%
Schlumberger Ltd....................................      SLB           4.55%
Texaco Inc..........................................      TX            4.15%
Atlantic Richfield Co...............................      ARC           3.73%
Enron Corp..........................................      ENE           3.58%
Halliburton Co......................................      HAL           2.59%
Williams Companies. Inc.............................      WMB           2.47%
Phillips Petroleum Co...............................      P             2.13%
USX-Marathon Group..................................      MRO           1.79%
Coastal Corp........................................      CGP           1.60%
Unocal Corporation..................................      UCL           1.54%
Burlington Resources Inc............................      BR            1.41%
Baker Hughes Inc....................................      BHI           1.32%
Occidental Petroleum Corp...........................      OXY           1.29%
Consolidated Natural Gas Co.........................      CNG           1.22%
Columbia Energy Group...............................      CG            1.15%
Amerada Hess Corp...................................      AHC           1.12%
Ashland Inc.........................................      ASH           1.06%
Sunoco Inc..........................................      SUN           1.00%
Anadarko Petroleum Corp.............................      APC           0.91%
Sonat Inc...........................................      SNT           0.88%
Apache Corp.........................................      APA           0.74%
Union Pacific Resources Group Inc...................      UPR           0.71%
Oryx Energy Co......................................      ORX           0.67%
Kerr-McGee Corp.....................................      KMG           0.65%
McDermott International Inc.........................      MDR           0.61%
Helmerich & Payne...................................      HP            0.55%
Rowan Companies Inc.................................      RDC           0.50%
                                                                       -----
                                                                         100%
</TABLE>
 
      Holdings and weightings are subject to change subsequent to January 5,
1999.
 
      Although the Company's subsidiary, MLPF&S, provides certain services to
the Energy SPDR Fund and the Energy Select Sector Index, the Company is not
affiliated with the Energy SPDR Fund or the Energy Select Sector Index, and the
Energy SPDR Fund will not receive any of the proceeds from the sale of, or have
any obligations under, the MITTS Securities. A prospective purchaser of the
MITTS Securities should independently decide whether an investment in the MITTS
Securities and the Energy SPDR Fund is appropriate.
 
      The Energy SPDR Fund is one of nine investment funds comprising the
Trust. Each fund's investment portfolio is comprised principally of constituent
companies whose equity securities are components of the S&P 500 Index, each
representing one of nine specified market sector indices. Each stock in the S&P
500 Index is allocated to only one Select Sector Index. The combined companies
of the nine indices represent all of the companies whose stocks are components
of the S&P 500 Index. The Energy SPDR Fund's initial public offering occurred
on December 16, 1998 and therefore it has limited operating history.
 
                                      S-23
<PAGE>
 
      Because the Trust is subject to the registration requirements of the Act
and the 1940 Act, the Trust is required to file periodically certain
information specified by the SEC. For more information about the Energy SPDR
Fund and the shares that a holder of the MITTS Securities may receive at
maturity, information provided to or filed with the SEC by the Trust can be
inspected at the SEC's public reference facilities or accessed over the
Internet through a web site maintained by the SEC at http://www.sec.gov. Copies
of such documents may also be obtained at no cost by calling the Trust at (800)
843-2639 or by writing the Trust c/o ALPS Mutual Funds Services, Inc., at 370
17th Street, Suite 3100, Denver, CO 80202. Neither the Fund Prospectus nor such
other documents are incorporated by reference herein, and the Company makes no
representation or warranty as to the accuracy or completeness of any such
documents.
 
      The Company is not affiliated with the Energy SPDR Fund, and the Energy
SPDR Fund has no obligations with respect to the MITTS Securities. This
prospectus supplement relates only to the MITTS Securities offered hereby and
does not relate to the shares of the Energy SPDR Fund or any other securities
relating to the Energy SPDR Fund. The information contained in this prospectus
supplement regarding the Energy SPDR Fund has been derived from the publicly
available documents described in the preceding paragraph. The Company makes no
representation that such publicly available documents or any other publicly
available information regarding the Energy SPDR Fund are accurate or complete.
Furthermore, there can be no assurance that all events occurring prior to the
date hereof (including events that would affect the accuracy or completeness of
the publicly available documents described in the preceding paragraph) that
would affect the trading price of the shares of the Energy SPDR Fund (and
therefore the trading price of the MITTS Securities) have been publicly
disclosed. Subsequent disclosure of any such events or the disclosure of or
failure to disclose material future events concerning the Energy SPDR Fund
could affect the Supplemental Redemption Amount, if any, to be received at
maturity and therefore the trading value of the MITTS Securities.
 
      MLPF&S, a subsidiary of the Company, is a soliciting dealer in the shares
of the Energy SPDR Fund. Additionally, MLPF&S serves as Index Compilation Agent
for the Energy Select Sector Index. In its capacity as Index Compilation Agent,
MLPF&S determines, in consultation with S&P, the composition of the securities
measured by the Energy Select Sector Index.
 
LICENSE AGREEMENT
 
      S&P, the AMEX and MLPF&S have entered into a non-exclusive license
agreement providing for the license to MLPF&S, in exchange for a fee, of the
right to use indices owned and published by S&P in connection with certain
securities, including the MITTS Securities, and the Company is an authorized
sublicensee of MLPF&S.
 
      The license agreement among S&P, the AMEX and MLPF&S provides that the
following language must be stated in this prospectus supplement:
 
      "The MITTS Securities, the Energy SPDR Fund and the Energy Select Sector
Index are not sponsored, endorsed, sold or promoted by S&P. S&P makes no
representation or warranty, express or implied, to the holders of the MITTS
Securities or any member of the public regarding the advisability of investing
in securities generally or in the MITTS Securities particularly or in the
ability of the Energy SPDR Fund to track the performance and yield of the
Energy Select Sector Index or in the ability of the Energy Select Sector Index
to track the performance of the energy sector represented in the stock market.
The stocks included in the Energy Select Sector Index were selected by MLPF&S
as the Index Compilation Agent in consultation with S&P from a universe of
companies involved in the development and production of energy products and
represented by the S&P 500 Index. The composition and weightings of the stocks
included in the Energy Select Sector Index can be expected to differ from the
composition and weighting of stocks included in any corresponding S&P 500
sector index that is published and disseminated by S&P. S&P's only relationship
to the Index Compilation Agent is the licensing of certain trademarks and trade
names of S&P and of the S&P 500 Index which is determined, composed and
calculated by S&P without regard to the index compilation agent or the MITTS
Securities. S&P has no obligation to take the needs of the Index Compilation
Agent, the Company
 
                                      S-24
<PAGE>
 
or the holders of the MITTS Securities into consideration in determining,
composing or calculating the S&P 500 Index. S&P is not responsible for and has
not participated in any determination of the timing of the sale of the MITTS
Securities, prices at which the MITTS Securities are initially to be sold, or
quantities of the MITTS Securities to be issued or in the determination or
calculation of the equation by which the MITTS Securities are to be converted
into shares of the Energy SPDR Fund or cash. S&P has no obligation or liability
in connection with the administration, marketing or trading of the MITTS
Securities.
 
      S&P does not guarantee the accuracy and/or the completeness of the S&P
500 Index, the Energy Select Sector Index or any data included therein. S&P
makes no warranty, express or implied, as to results to be obtained by the
Company, MLPF&S, the holders of the MITTS Securities, or any other person or
entity from the use of the S&P 500 Index, the Energy Select Sector Index or any
data included therein in connection with the rights licensed under the license
agreement described herein or for any other use. S&P makes no express or
implied warranties, and expressly disclaims all warranties of merchantability
or fitness for a particular purpose with respect to the S&P 500 Index, the
Energy Select Sector Index or any data included therein. Without limiting the
generality of the foregoing, in no event shall S&P have any liability for any
special, punitive, indirect or consequential damages (including lost profits),
even if notified of the possibility of such damages."
 
      All disclosures contained in this prospectus supplement regarding the S&P
500 Index or the Energy Select Sector Index, including its respective make-up,
method of calculation and changes in its components, are derived from publicly
available information prepared by S&P and the Trust, respectively. The Company
and MLPF&S do not assume any responsibility for the accuracy or completeness of
such information.
 
                     UNITED STATES FEDERAL INCOME TAXATION
 
      Set forth in full below is the opinion of Brown & Wood LLP, counsel to
the Company, as to certain United States Federal income tax consequences of the
purchase, ownership and disposition of the MITTS Securities. Such opinion is
based upon laws, regulations, rulings and decisions now in effect, all of which
are subject to change (including retroactive changes in effective dates) or
possible differing interpretations. The discussion below deals only with MITTS
Securities held as capital assets and does not purport to deal with persons in
special tax situations, such as financial institutions, insurance companies,
regulated investment companies, dealers in securities or currencies, tax-exempt
entities, persons holding MITTS Securities in a tax-deferred or tax-advantaged
account, or persons holding MITTS Securities as a hedge against currency risks,
as a position in a "straddle" or as part of a "hedging" or "conversion"
transaction for tax purposes. It also does not deal with holders other than
original purchasers (except where otherwise specifically noted herein). The
following discussion also assumes that the issue price of the MITTS Securities,
as determined for United States Federal income tax purposes, equals the
principal amount thereof. Persons considering the purchase of the MITTS
Securities should consult their own tax advisors concerning the application of
the United States Federal income tax laws to their particular situations as
well as any consequences of the purchase, ownership and disposition of the
MITTS Securities arising under the laws of any other taxing jurisdiction.
 
      As used herein, the term "U.S. Holder" means a beneficial owner of a
MITTS Security that is for United States Federal income tax purposes (a) a
citizen or resident of the United States, (b) a corporation, partnership or
other entity created or organized in or under the laws of the United States or
of any political subdivision thereof (other than a partnership that is not
treated as a United States person under any applicable Treasury regulations),
(c) an estate the income of which is subject to United States Federal income
taxation regardless of its source, (d) a trust if a court within the United
States is able to exercise primary supervision over the administration of the
trust and one or more United States persons have the authority to control all
substantial decisions of the trust, or (e) any other person whose income or
gain in respect of a MITTS Security is effectively connected with the conduct
of a United States trade or business. Notwithstanding the preceding sentence,
to the extent provided in Treasury regulations, certain trusts in existence on
August 20, 1996, and treated as United States persons prior to such date that
elect to continue to be treated as United States persons
 
                                      S-25
<PAGE>
 
also will be a U.S. Holder. As used herein, the term "Non-U.S. Holder" means a
beneficial owner of a MITTS Security that is not a U.S. Holder.
 
GENERAL
 
      There are no statutory provisions, regulations, published rulings or
judicial decisions addressing or involving the characterization, for United
States Federal income tax purposes, of the MITTS Securities or securities with
terms substantially the same as the MITTS Securities. However, although the
matter is not free from doubt, under current law, each MITTS Security should be
treated as a debt instrument of the Company for United States Federal income
tax purposes. The Company currently intends to treat each MITTS Security as a
debt instrument of the Company for United States Federal income tax purposes
and, where required, intends to file information returns with the Internal
Revenue Service ("IRS") in accordance with such treatment, in the absence of
any change or clarification in the law, by regulation or otherwise, requiring a
different characterization of the MITTS Securities. Prospective investors in
the MITTS Securities should be aware, however, that the IRS is not bound by the
Company's characterization of the MITTS Securities as indebtedness, and the IRS
could possibly take a different position as to the proper characterization of
the MITTS Securities for United States Federal income tax purposes. The
following discussion of the principal United States Federal income tax
consequences of the purchase, ownership and disposition of the MITTS Securities
is based upon the assumption that each MITTS Security will be treated as a debt
instrument of the Company for United States Federal income tax purposes. If the
MITTS Securities are not in fact treated as debt instruments of the Company for
United States Federal income tax purposes, then the United States Federal
income tax treatment of the purchase, ownership and disposition of the MITTS
Securities could differ from the treatment discussed below with the result that
the timing and character of income, gain or loss recognized in respect of a
MITTS Security could differ from the timing and character of income, gain or
loss recognized in respect of a MITTS Security had the MITTS Securities in fact
been treated as debt instruments of the Company for United States Federal
income tax purposes.
 
U.S. HOLDERS
 
      On June 11, 1996, the Treasury Department issued final regulations (the
"Final Regulations") concerning the proper United States Federal income tax
treatment of contingent payment debt instruments such as the MITTS Securities,
which apply to debt instruments issued on or after August 13, 1996 and,
accordingly, will apply to the MITTS Securities. In general, the Final
Regulations cause the timing and character of income, gain or loss reported on
a contingent payment debt instrument to substantially differ from the timing
and character of income, gain or loss reported on a contingent payment debt
instrument under general principles of prior United States Federal income tax
law. Specifically, the Final Regulations generally require a U.S. Holder of
such an instrument to include future contingent and noncontingent interest
payments in income as such interest accrues based upon a projected payment
schedule. Moreover, in general, under the Final Regulations, any gain
recognized by a U.S. Holder on the sale, exchange, or retirement of a
contingent payment debt instrument is treated as ordinary income, and all or a
portion of any loss realized could be treated as ordinary loss as opposed to
capital loss (depending upon the circumstances). The Final Regulations provide
no definitive guidance as to whether or not an instrument is properly
characterized as a debt instrument for United States Federal income tax
purposes.
 
      In particular, solely for purposes of applying the Final Regulations to
the MITTS Securities, the Company has determined that the projected payment
schedule for the MITTS Securities will consist of payment on the maturity date
of the principal amount thereof and a projected Supplemental Redemption Amount
equal to $    per Unit (the "Projected Supplemental Redemption Amount"). This
represents an estimated yield on the MITTS Securities equal to  % per annum
(compounded semiannually). Accordingly, during the term of the MITTS
Securities, a U.S. Holder of a MITTS Security will be required to include in
income as ordinary interest an amount equal to the sum of the daily portions of
interest on the MITTS Security that are deemed to accrue at this estimated
yield for each day during the taxable year (or portion of the taxable year) on
which the U.S. Holder holds such MITTS Security. The amount of interest that
will be deemed to accrue in any accrual
 
                                      S-26
<PAGE>
 
period (i.e., generally each six-month period during which the MITTS Securities
are outstanding) will equal the product of this estimated yield (properly
adjusted for the length of the accrual period) and the MITTS Security's
adjusted issue price (as defined below) at the beginning of the accrual period.
The daily portions of interest will be determined by allocating to each day in
the accrual period the ratable portion of the interest that is deemed to accrue
during the accrual period. In general, for these purposes a MITTS Security's
adjusted issue price will equal the MITTS Security's issue price (i.e., $10),
increased by the interest previously accrued on the MITTS Security. At maturity
of a MITTS Security, in the event that the actual Supplemental Redemption
Amount, if any, exceeds $    per Unit (i.e., the Projected Supplemental
Redemption Amount), a U.S. Holder will be required to include the excess of the
actual Supplemental Redemption Amount over $    per Unit (i.e., the Projected
Supplemental Redemption Amount) in income as ordinary interest on the stated
maturity date. Alternatively, in the event that the actual Supplemental
Redemption Amount, if any, is less than $    per Unit (i.e., the Projected
Supplemental Redemption Amount), the amount by which the Projected Supplemental
Redemption Amount (i.e., $    per Unit) exceeds the actual Supplemental
Redemption Amount will be treated first as an offset to any interest otherwise
includible in income by the U.S. Holder with respect to the MITTS Security for
the taxable year in which the stated maturity date occurs to the extent of the
amount of such includible interest. Further, a U.S. Holder will be permitted to
recognize and deduct, as an ordinary loss that is not subject to the
limitations applicable to miscellaneous itemized deductions, any remaining
portion of the Projected Supplemental Redemption Amount (i.e., $    per Unit)
in excess of the actual Supplemental Redemption Amount that is not treated as
an interest offset pursuant to the foregoing rules. In general, if a U.S.
Holder receives shares of the Energy SPDR Fund on the maturity date, such U.S.
Holder's initial aggregate tax basis in the shares of the Energy SPDR Fund
received by the U.S. Holder should equal the sum of the principal amount of the
MITTS Security and the actual Supplemental Redemption Amount (less any cash
received in lieu of fractional shares of the Energy SPDR Fund). This aggregate
tax basis should be allocated among the shares of the Energy SPDR Fund received
by the U.S. Holder in accordance with the relative fair market value of such
shares of the Energy SPDR Fund. Moreover, such U.S. Holder's holding period for
any shares of the Energy SPDR Fund received by the U.S. Holder should begin on
the day immediately following the maturity date.
 
      Upon the sale, exchange or redemption of a MITTS Security prior to the
stated maturity date, a U.S. Holder will be required to recognize taxable gain
or loss in an amount equal to the difference, if any, between the amount
realized by the U.S. Holder upon such sale, exchange or redemption and the U.S.
Holder's adjusted tax basis in the MITTS Security as of the date of
disposition. A U.S. Holder's adjusted tax basis in a MITTS Security generally
will equal such U.S. Holder's initial investment in the MITTS Security
increased by any interest previously included in income with respect to the
MITTS Security by the U.S. Holder. Any such taxable gain will be treated as
ordinary income. Any such taxable loss will be treated as ordinary loss to the
extent of the U.S. Holder's total interest inclusions on the MITTS Security.
Any remaining loss generally will be treated as long-term or short-term capital
loss (depending upon the U.S. Holder's holding period for the MITTS Security).
All amounts includible in income by a U.S. Holder as ordinary interest pursuant
to the Final Regulations will be treated as original issue discount.
 
      Prospective investors in the MITTS Securities should be aware that if a
significant percentage of the total aggregate amount of the MITTS Securities
originally issued are sold at a discount from the principal amount thereof,
which is not expected to be the case, then the issue price of the MITTS
Securities, as determined for United States Federal income tax purposes, may be
less than the principal amount of the MITTS Securities. In such event, if a
U.S. Holder purchases a MITTS Security in connection with the original issuance
thereof for an amount equal to the principal amount thereof, the amount of the
difference between the principal amount of the MITTS Securities and the issue
price thereof generally should be allocated by the U.S. Holder to daily
portions of interest that are deemed to accrue on each such date as an offset
to such interest on each such date. In addition, on each such date, the U.S.
Holder's adjusted tax basis in the MITTS Security will be reduced by the amount
treated as an interest offset pursuant to the foregoing rule. Alternatively, in
the event that the issue price of the MITTS Securities, as determined for
United States Federal income tax purposes, equals the principal amount thereof
and a U.S. Holder purchases a MITTS Security in connection with the
 
                                      S-27
<PAGE>
 
original issuance thereof for an amount that is less than the principal amount
thereof, the amount of the difference between the Principal Amount of the MITTS
Security and the amount paid by the U.S. Holder to purchase the MITTS Security
generally would be allocated by the U.S. Holder to daily portions of interest
that are deemed to accrue on each such date as additional ordinary interest
includible in income by the U.S. Holder on each such date. In such event, on
each such date, the U.S. Holder's adjusted tax basis in the MITTS Security will
be increased by the amount treated as additional ordinary interest income. In
addition, U.S. Holders purchasing a MITTS Security at a price that differs from
the adjusted issue price of the MITTS Security as of the purchase date (e.g.,
subsequent purchases) will be subject to rules providing for certain
adjustments to the foregoing rules and such U.S. Holders should consult their
own tax advisors concerning these rules. Moreover, prospective investors in the
MITTS Securities should consult their own tax advisors concerning the
application of the Final Regulations to their investment in the MITTS
Securities. Investors in the MITTS Securities may also obtain the projected
payment schedule, as determined by the Company for purposes of the application
of the Final Regulations to the MITTS Securities, by submitting a written
request for such information to Merrill Lynch & Co., Inc., Attn: Darryl W.
Colletti, Corporate Secretary's Office, 100 Church Street, 12th Floor, New
York, New York 10080-6512.
 
      The projected payment schedule (including both the Projected Supplemental
Redemption Amount and the estimated yield on the MITTS Securities) has been
determined solely for United States Federal income tax purposes (i.e., for
purposes of applying the Final Regulations to the MITTS Securities), and is
neither a prediction nor a guarantee of what the actual Supplemental Redemption
Amount will be, or that the actual Supplemental Redemption Amount will even
exceed zero.
 
                                      S-28
<PAGE>
 
HYPOTHETICAL TABLE
 
      The following table sets forth the amount of interest that will be deemed
to have accrued with respect to each Unit of the MITTS Securities during each
accrual period over an assumed term of approximately seven years for the MITTS
Securities based upon a hypothetical projected payment schedule for the MITTS
Securities (including both a hypothetical Projected Supplemental Redemption
Amount and a hypothetical estimated yield equal to 5.77% per annum (compounded
semiannually)) as determined by the Company for purposes of illustrating the
application of the Final Regulations to the MITTS Securities as if the MITTS
Securities had been issued on January 5, 1999. The following table is for
illustrative purposes only. The actual projected payment schedule for the MITTS
Securities (including both the actual projected Supplemental Redemption Amount
and the actual estimated yield) will be determined by the Company on the
Pricing Date and will depend upon actual market interest rates (and thus the
Company's borrowing costs for debt instruments with comparable maturities) as
of the Pricing Date. The actual projected payment schedule for the MITTS
Securities (including both the actual Projected Supplemental Redemption Amount
and the actual estimated yield) and the actual tax accrual table will be set
forth in final prospectus supplement delivered to investors in connection with
sales of MITTS Securities:
 
<TABLE>
<CAPTION>
                                                                TOTAL INTEREST
                                                                DEEMED TO HAVE
                                          INTEREST DEEMED TO   ACCRUED ON MITTS
                                            ACCRUE DURING    SECURITIES AS OF END
                                            ACCRUAL PERIOD    OF ACCRUAL PERIOD
 ACRUAL PERIODC                               (PER UNIT)          (PER UNIT)
- --------------                            ------------------ --------------------
  <S>                                     <C>                <C>
  January 5, 1999 through July 5, 1999...      $0.2861             $0.2861
  July 6, 1999 through January 5, 2000...      $0.2967             $0.5828
  January 6, 2000 through July 5, 2000...      $0.3054             $0.8882
  July 6, 2000 through January 5, 2001...      $0.3141             $1.2023
  January 6, 2001 through July 5, 2001...      $0.3232             $1.5255
  July 6, 2001 through January 5, 2002...      $0.3325             $1.8580
  January 6, 2002 through July 5, 2002...      $0.3421             $2.2001
  July 6, 2002 through January 5, 2003...      $0.3520             $2.5521
  January 6, 2003 through July 5, 2003...      $0.3621             $2.9142
  July 6, 2003 through January 5, 2004...      $0.3726             $3.2868
  January 6, 2004 through July 5, 2004...      $0.3833             $3.6701
  July 6, 2004 through January 5, 2005...      $0.3944             $4.0645
  January 6, 2005 through July 5, 2005...      $0.4057             $4.4702
  July 6, 2005 through January 5, 2006...      $0.4175             $4.8877
</TABLE>
- --------
Hypothetical Projected Supplemental Redemption Amount=$4.8877 per Unit.
 
NON-U.S. HOLDERS
 
      A non-U.S. Holder will not be subject to United States Federal income
taxes on payments of principal, premium (if any) or interest (including
original issue discount, if any) on a MITTS Security, unless such non-U.S.
Holder is a direct or indirect 10% or greater shareholder of the Company, a
controlled foreign corporation related to the Company or a bank receiving
interest described in section 881(c)(3)(A) of the Internal Revenue Code of
1986, as amended. However, income allocable to non-U.S. Holders will generally
be subject to annual tax reporting on IRS Form 1042S. For a non-U.S. Holder to
qualify for the exemption from taxation, the last United States payor in the
chain of payment prior to payment to a non-U.S. Holder (the "Withholding
Agent") must have received in the year in which a payment of interest or
principal occurs, or in either of the two preceding calendar years, a statement
that (a) is signed by the beneficial owner of the MITTS Security under
penalties of perjury, (b) certifies that such owner is not a U.S. Holder and
(c) provides the name and address of the beneficial owner. The statement may be
made on an IRS Form W-8 or a substantially similar form, and the beneficial
owner must inform the Withholding Agent of any change in the information on the
statement within 30 days of such change. If a MITTS Security is held through a
securities clearing organization or certain other
 
                                      S-29
<PAGE>
 
financial institutions, the organization or institution may provide a signed
statement to the Withholding Agent. However, in such case, the signed statement
must be accompanied by a copy of the IRS Form W-8 or the substitute form
provided by the beneficial owner to the organization or institution. The
Treasury Department is considering implementation of further certification
requirements.
 
      Under current law, a MITTS Security will not be includible in the estate
of a non-U.S. Holder unless the individual is a direct or indirect 10% or
greater shareholder of the Company or, at the time of such individual's death,
payments in respect of such MITTS Security would have been effectively
connected with the conduct by such individual of a trade or business in the
United States.
 
BACKUP WITHHOLDING
 
      Backup withholding of United States Federal income tax at a rate of 31%
may apply to payments made in respect of the MITTS Securities to registered
owners who are not "exempt recipients" and who fail to provide certain
identifying information (such as the registered owner's taxpayer identification
number) in the required manner. Generally, individuals are not exempt
recipients, whereas corporations and certain other entities generally are
exempt recipients. Payments made in respect of the MITTS Securities to a U.S.
Holder must be reported to the IRS, unless the U.S. Holder is an exempt
recipient or establishes an exemption. Compliance with the identification
procedures described in the preceding section would establish an exemption from
backup withholding for those non-U.S. Holders who are not exempt recipients.
 
      In addition, upon the sale of a MITTS Security to (or through) a broker,
the broker must withhold 31% of the entire purchase price, unless either (a)
the broker determines that the seller is a corporation or other exempt
recipient or (b) the seller provides, in the required manner, certain
identifying information and, in the case of a non-U.S. Holder, certifies that
such seller is a non-U.S. Holder (and certain other conditions are met). Such a
sale must also be reported by the broker to the IRS, unless either (a) the
broker determines that the seller is an exempt recipient or (b) the seller
certifies its non-U.S. status (and certain other conditions are met).
Certification of the registered owner's non-U.S. status would be made normally
on an IRS Form W-8 under penalties of perjury, although in certain cases it may
be possible to submit other documentary evidence.
 
      Any amounts withheld under the backup withholding rules from a payment to
a beneficial owner would be allowed as a refund or a credit against such
beneficial owner's United States Federal income tax provided that the required
information is furnished to the IRS.
 
NEW WITHHOLDING REGULATIONS
 
      On October 6, 1997, the Treasury Department issued new regulations (the
"New Regulations") which make certain modifications to the withholding, backup
withholding and information reporting rules described above. The New
Regulations attempt to unify certification requirements and modify reliance
standards. The New Regulations will generally be effective for payments made
after December 31, 1999, subject to certain transition rules. Prospective
investors are urged to consult their own tax advisors regarding the New
Regulations.
 
                                USE OF PROCEEDS
 
      The net proceeds from the sale of the MITTS Securities will be used as
described under "Use of Proceeds" in the attached prospectus of the Company and
to hedge market risks of the Company associated with its obligation to pay the
Principal Amount and the Supplemental Redemption Amount.
 
                                      S-30
<PAGE>
 
                                  UNDERWRITING
 
      MLPF&S (the "underwriter") has agreed, subject to the terms and
conditions of the underwriting Agreement and a Terms Agreement, to purchase
from the Company $    aggregate principal amount of MITTS Securities. The
underwriting Agreement provides that the obligations of the underwriter are
subject to certain conditions precedent and that the underwriter will be
obligated to purchase all of the MITTS Securities if any are purchased.
 
      The underwriter has advised the Company that it proposes initially to
offer all or part of the MITTS Securities directly to the public at the
offering price set forth on the cover page of this Prospectus Supplement. After
the initial public offering, the public offering price may be changed. The
underwriter is offering the MITTS Securities subject to receipt and acceptance
and subject to the underwriter's right to reject any order in whole or in part.
 
      In addition to the commissions payable at the time of the original sale
of the MITTS Securities, the underwriter will pay a commission on each of up to
six anniversary dates of the issuance of the MITTS Securities to brokers whose
clients purchased the Units in the initial distribution and who continue to
hold their MITTS Securities.
 
      The underwriting of the MITTS Securities will conform to the requirements
set forth in the applicable sections of Rule 2720 of the Conduct Rules of the
National Association of Securities Dealers, Inc.
 
      The underwriter is permitted to engage in certain transactions that
stabilize the price of the MITTS Securities. Such transactions consist of bids
or purchases for the purpose of pegging, fixing or maintaining the price of the
MITTS Securities.
 
      If the underwriter creates a short position in the MITTS Securities in
connection with the offering, i.e., if it sells more Units of the MITTS
Securities than are set forth on the cover page of this prospectus supplement,
the underwriter may reduce that short position by purchasing Units of the MITTS
Securities in the open market. In general, purchases of a security for the
purpose of stabilization or to reduce a short position could cause the price of
the security to be higher than it might be in the absence of such purchases.
Neither the Company nor the underwriter makes any representation or prediction
as to the direction or magnitude of any effect that the transactions described
above may have on the price of the MITTS Securities. In addition, neither the
Company nor the underwriter makes any representation that the underwriter will
engage in such transactions or that such transactions, once commenced, will not
be discontinued without notice.
 
      The underwriter may use this prospectus supplement, the accompanying
prospectus of the Company and the Fund Prospectus for offers and sales related
to market-making transactions in the MITTS Securities. The underwriter may act
as principal or agent in these transactions, and the sales will be made at
prices related to prevailing market prices at the time of sale.
 
                        VALIDITY OF THE MITTS SECURITIES
 
      The validity of the MITTS Securities will be passed upon for the Company
and for the underwriter by Brown & Wood LLP, New York, New York.
 
                                      S-31
<PAGE>
 
                             INDEX OF DEFINED TERMS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Act........................................................................ S-7
Adjusted Ending Value...................................................... S-5
Adjustment Factor.......................................................... S-5
AMEX....................................................................... S-1
Beneficial Owners.......................................................... S-20
Calculation Agent.......................................................... S-8
Calculation Day............................................................ S-16
Calculation Period......................................................... S-16
Company.................................................................... S-1
Depositary................................................................. S-19
Depositary Services........................................................ S-21
Determination Date......................................................... S-18
Direct Participants........................................................ S-20
DTC........................................................................ S-4
Ending Value............................................................... S-5
Energy SPDR Fund........................................................... S-1
Energy Select Sector Index................................................. S-1
Final Regulations.......................................................... S-26
Fund Expenses.............................................................. S-18
Fund Prospectus............................................................ S-4
Global Securities.......................................................... S-19
Index Compilation Agent.................................................... S-4
Index Termination Event.................................................... S-18
Indirect Participants...................................................... S-21
Industry................................................................... S-21
IRS........................................................................ S-26
Market Disruption Event.................................................... S-18
Midland.................................................................... S-14
MITTS Securities........................................................... S-4
MLPF&S..................................................................... S-4
Net Asset Value............................................................ S-6
New Regulations............................................................ S-30
1983 Indenture............................................................. S-15
1940 Act................................................................... S-7
NYSE....................................................................... S-10
Participant................................................................ S-20
Pre-liquidation Date....................................................... S-18
Pricing Date............................................................... S-5
Principal Amount........................................................... S-5
Projected Supplemental Redemption Amount................................... S-26
SEC........................................................................ S-7
SPDR....................................................................... S-1
Starting Value............................................................. S-5
Supplemental Redemption Amount............................................. S-5
Systems.................................................................... S-21
Trading Day................................................................ S-16
Trust...................................................................... S-7
underwriter................................................................ S-31
Unit....................................................................... S-4
U.S. Holder................................................................ S-25
Withholding Agent.......................................................... S-29
</TABLE>
 
                                      S-32
<PAGE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                                    [LOGO] 
                                2,500,000 UNITS
 
                           MERRILL LYNCH & CO., INC.
 
   ENERGY SELECT SECTOR STANDARD & POOR'S DEPOSITARY RECEIPT ("SPDR(R)") FUND
                     MARKET INDEX TARGET-TERM SECURITIES(R)
                              DUE JANUARY  , 2006
                             "MITTS(R) SECURITIES"
 
                        ------------------------------
 
                             PROSPECTUS SUPPLEMENT
 
                        ------------------------------
 
                              MERRILL LYNCH & CO.
 
                                JANUARY  , 1999
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission