American Stock Exchange Lists SPARQS Linked to Biogen Idec Inc. NEW YORK, Sept. 24 /PRNewswire/ -- The American Stock Exchange(R) (Amex(R)) today began trading Morgan Stanley 7% Stock Participation Accreting Redemption Quarterly-pay Securities ("SPARQS") mandatorily exchangeable for shares of common stock of Biogen Idec Inc. Trading under the ticker symbol BIS, the 1.854 million units of the new securities were issued at $5.931 with a maturity date of November 1, 2005. At maturity, holders will receive one tenth of one share of Biogen Idec, Inc. common stock in exchange for each SPARQS, subject to the issuer's right to call the SPARQS for the cash call price. The issuer is Morgan Stanley and the Amex specialist unit for the new listing is AIM Securities/Aegis Joint Account. If you would like to receive a copy of the prospectus for BIS, please contact the Capital Markets Group at the American Stock Exchange at (212) 306- 1659. The American Stock Exchange(R) (Amex(R)) is the only primary exchange that offers trading across a full range of equities, options and exchange traded funds (ETFs), including structured products and HOLDRS(SM). In addition to its role as a national equities market, the Amex is the pioneer of the ETF, responsible for bringing the first domestic product to market in 1993. Leading the industry in ETF listings, the Amex lists 139 ETFs. The Amex is also one of the largest options exchanges in the U.S., trading options on broad-based and sector indexes as well as domestic and foreign stocks. For more information, please visit http://www.amex.com/. DATASOURCE: The American Stock Exchange CONTACT: Media, Lynn Duffy, American Stock Exchange, +1-212-306-1654, or Web site: http://www.amex.com/

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