NEW YORK, May 9 /PRNewswire/ -- Today the American Stock Exchange(R) (Amex(R)) launched trading in options on the following Amex-listed exchange traded fund: -- iShares GSCI Commodity-Indexed Trust (GSG) iShares GSCI Commodity-Indexed Trust options will open with strike prices of 30-50 (1 pt increments) and position limits of 2,500,000 shares. The options will trade on the January expiration cycle. The specialist will be Susquehanna Investment Group. The investment objective of the Trust is to seek investment results, through the Trust's investment in the investing pool, that correspond generally, but are not necessarily identical, to the performance of the Index, before the payment of expenses and liabilities of the Trust and the investing pool. The investing pool will hold long positions in CERFs, which are futures contracts listed on the CME that have a term of approximately five years after listing and whose settlement at expiration is based on the value of the GSCI(R) Excess Return Index, or GSCI-ER, at that time. The investing pool will also earn interest on the assets used to collateralize its holdings of CERFs. About the American Stock Exchange The American Stock Exchange(R) (Amex(R)) 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 291 ETFs to date. 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: American Stock Exchange CONTACT: Catherine Chantharaj, of American Stock Exchange, +1-212-306- 1689, Web site: http://www.amex.com/

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