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International Securities Exchange To Present At The Merrill Lynch Banking & Financial Services Investor Conference

Date 08/11/2006

The International Securities Exchange (NYSE: ISE) said today that David Krell, President and Chief Executive Officer, will present at the Merrill Lynch Banking & Financial Services Investor Conference on Wednesday, November 15, 2006 at 1:45 p.m. ET. An audio webcast of the presentation will be available on the Investor Relations section of ISE's website at www.iseoptions.com and will be archived there for 14 days.

ISE Background
International Securities Exchange Holdings, Inc. (NYSE: ISE), through its subsidiaries, operates a family of innovative securities markets. ISE is founded on the principle that technology and competition create better, more efficient markets for investors and consists of an options exchange, a stock exchange and an alternative markets platform. 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 is the largest U.S. equity options exchange and is among the leading options exchanges in the world. ISE offers index options, including a portfolio of proprietary index products, and enhanced market data products for sophisticated investors. ISE FX Options(TM) are slated to launch in the first quarter of 2007.

ISE Stock Exchange, launched in September 2006 with strategic partners, includes an innovative MidPoint Match(TM) platform which offers investors continuous price improvement. It is expected that MidPoint Match will be integrated with a fully-displayed Best Bid Offer market in the fourth quarter of 2006.

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 and its options exchange, visit www.iseoptions.com and for more information about ISE Stock Exchange, visit www.isestock.com. Additionally, to learn more about ISE alternative markets technology, visit www.longitude.com.