QUANTUMONLINE.COM SECURITY DESCRIPTION:  Merrill Lynch & Co. Inc., S&P 500 Index MITTS (Market Index Target-Term Securities), linked to the value of the S&P 500 Index, due 6/07/2010, and issued in $10 principal amounts per unit. The MITTS are notes designed for investors that are willing to forgo interest payments on the notes in exchange for participation in possible increases in the S&P 500 Index over the term of the notes. The MITTS will make no payments before maturity and can not be redeemed prior to their maturity date. At maturity the MITTS will pay a minimum of the $10 principal amount, plus an supplemental redemption amount based on the increase, if any, in the value of the S&P 500 Index above the starting value of the index (1,191.50 as of 5/31/2005), reduced by an annual adjustment factor of 1.75% per year (a total of 8.39% over the term of the notes). The supplemental redemption amount will be calculated as $10 times the adjusted ending value of the index minus the starting value divided by the starting value (see page PS-4 of the prospectus for further information). In no event will the holder receive less than the $10 principal amount at maturity. The MITTS notes are Medium Term Notes, Series C, senior unsecured debt securities issued by Merrill Lynch & Co. Inc. and will rank equally with all of their other unsecured and unsubordinated debt. See the IPO prospectus for further information on the maturity calculation and the MITTS by using the ‘Link to IPO Prospectus’ provided below.

Company's Online Information Links

HOME PAGE:     http://www.ml.com/ (This parent company URL is for reference only and does not have specific information on the security.)

Company's Online SEC EDGAR Filings

Company's SEC EDGAR Filings

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Company's Email Address Links

Email Address	investor_relations@ml.com
Email Contact Form on Website	Go to Email Form

Address and Phone Numbers

Address:   4 World Financial Center, North Tower, New York, NY 10080
Main Phone Number	212-449-1000
Fax Number	212-236-4384
Investor Relations	866-607-1234
Toll Free Phone Number	800-637-7455

CEO - David H. Komansky

CFO - Thomas H. Patrick