ISE Intl Secs Exchange Hldgs

The International Securities Exchange Holdings, Inc. (NYSE: ISE) announced today that it will issue its earnings release for the second quarter of 2007 before the market opens on Tuesday, August 7, 2007. Shortly after its earnings release, ISE will file its Form 10-Q. ISE will not host an earnings conference call or webcast. 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 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.