NEW YORK, Dec. 10 /PRNewswire/ -- The American Stock Exchange(R) (Amex(R)) will launch trading in options on Tuesday, December 11, 2007, on the following Amex-listed exchange traded fund: -- Vanguard Extended Duration Treasury ETF (AMEX:EDV) Vanguard Extended Duration Treasury ETF options will open with strike prices of 100-110 (1-point increments) options will open with position limits of 2,500,000 shares. The options will trade on the March expiration cycle. The specialist will be Susquehanna Investment Group. Vanguard Extended Duration Treasury is an exchange traded fund incorporated in the USA. The Fund seeks investment results that correspond to the price and yield of the Lehman Brothers Treasury STRIPS 20-30 Year Equal Par Bond Index. 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 380 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 www.amex.com. DATASOURCE: American Stock Exchange CONTACT: Catherine Chantharaj of American Stock Exchange, +1-212-306-1641, Web site: http://www.amex.com/

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