NEW YORK, June 28 /PRNewswire/ -- The American Stock Exchange(R) (Amex(R)) will launch trading in options on Tuesday, June 29, 2005 on the following Nasdaq Stock Market and New York Stock Exchange listed stocks of:

     * aQuantive, Inc. (Option Symbol: QBT/Stock Symbol: AQNT)
     * Tenaris S.A (Symbol: TS)
     * TurboChef Technologies, Inc. (Option Symbol: TCF/Stock Symbol: OVEN)

aQuantive, Inc. options will open with position limits of 25,000,000 shares. The options will trade on the March expiration cycle. The specialist will be Charlton Specialist Partners, LLC. aQuantive, Inc. is a digital marketing services and technology company that helps marketers acquire, retain and grow customers across all digital media. The Company also equips advertising agencies and media groups with the tools needed to deliver effective digital marketing campaigns.

Tenaris S.A options will open with position limits of 7,500,000 shares. The options will trade on the March expiration cycle. The specialist will be LaBranche Structured Products, LLC. Tenaris S.A. manufactures seamless steel pipe products on a global basis. The Company also provides pipe handling, stocking and distribution services to the oil and gas, energy, and mechanical industries.

TurboChef Technologies, Inc. options will open with position limits of 7,500,000 shares. The options will trade on the January expiration cycle. The specialist will be Group One Trading, L.P. TurboChef Technologies, Inc. is a foodservice technology company that designs, develops and markets cooking systems. The Company's TurboChef cooking system employs proprietary hardware and software technologies that cook-to-order a variety of foods at rapid speeds.

For more information on any Amex-listed company, please visit http://www.amex.com .

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 164 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 .

SOURCE The American Stock Exchange