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ISE Stock Exchange Reaches New Daily Volume Record of Over 100 Million Shares

Date 10/09/2007

The International Securities Exchange (NYSE: ISE) announced today that the ISE Stock Exchange set a new daily trading volume record of 106.6 million shares on September 7, 2007, surpassing the previous record of 94.2 million shares set on September 6, 2007.

“We are pleased to reach this significant volume milestone of over 100 million shares executed on the ISE Stock Exchange,” said Andrew Brenner, head of the ISE Stock Exchange. "Average volume was more than 43 million shares per day in August and that momentum is continuing to build. We have made great strides in the one year since we launched the Exchange, and we remain focused on attracting new users to the platform and providing our members with the speed and trading functionality that are needed in today’s marketplace.”

The ISE Stock Exchange launched in September 2006 and has consistently increased trading volume since inception. Over 2 billion shares have exchanged hands on the platform since its launch. The ISE Stock Exchange integrates a fully displayed stock market with MidPoint Match(SM), a continuous, anonymous platform for trading equities at the midpoint of the National Best Bid and Offer (NBBO). The ISE Stock Exchange is a completely automated and Reg NMS compliant market place that offers high-speed order execution capabilities, a competitive pricing structure and neutral access rules.

ISE Background
International Securities Exchange Holdings, Inc. (NYSE: ISE), through its subsidiaries, operates a family of innovative securities markets. Founded on the principle that technology and competition create better, more efficient markets for investors, ISE consists of an options exchange, a stock exchange, an alternative markets platform, and a market data business. ISE continually enhances its trading systems and develops new products to provide investors with the best marketplace and investment tools to trade smarter.
ISE developed a unique market structure for advanced screen-based trading systems and in May 2000 launched the first fully electronic US options exchange. Currently, ISE operates the world’s largest equity options exchange. ISE offers index options, including a portfolio of proprietary index products, and enhanced market data products for sophisticated investors. ISE FX OptionsSM launched in the second quarter of 2007.
ISE Stock Exchange, launched in September 2006, is a completely electronic marketplace and the only dual structure platform that integrates a dark pool, MidPoint MatchSM, with a fully displayed stock market. Midpoint Match is a proprietary, non-displayed market that trades equity securities at the midpoint between the National Best Bid and Offer (NBBO).
ISE’s alternative markets business currently consists of an events market trading platform known as Longitude. Longitude’s patented and proprietary technology provides a unique parimutuel structure for derivatives auctions which results in greater trading and pricing flexibility for market participants.

For more information about ISE, visit www.ise.com.