ISE Intl Secs Exchange Hldgs

The International Securities Exchange Holdings, Inc. (NYSE: ISE) announced today that it will issue its earnings release for the third quarter of 2006 on Wednesday, October 25, 2006 before the financial markets open. The Company will host a conference call at 8:30 a.m. Eastern Time to discuss the results with the investment community. All interested parties can listen to a live audio webcast that will be hosted on the Investor Relations section of the Company's web site at www.iseoptions.com. An investor presentation that will be referenced during the call will also be posted to the web site. The conference call can also be accessed by calling (800) 798-2864 and dialing the participant passcode 14293198. Please reserve a line 15 minutes prior to the start of the conference call. The conference call replay will be available from 10:30 a.m. on October 25, 2006 until midnight on October 26, 2006 and can be accessed by calling (888) 286-8010 and dialing the participant passcode 44893091. An archived replay of the call will be available on the Investor Relations section of the Company's web site at www.iseoptions.com. ISE Background International Securities Exchange Holdings, Inc. (ISE Holdings) is the parent company of International Securities Exchange, LLC (ISE). ISE operates an innovative securities market, founded on the principle that technology and competition create better, more efficient markets for investors. ISE is the largest equity options exchange and is among the leading options exchanges in the world. ISE developed a unique market structure for advanced screen-based trading systems and in May 2000 launched the first fully electronic US options exchange. The ISE Stock Exchange launched in September 2006 with strategic partners and offers an innovative MidPoint Match platform, which will be followed by a fully integrated displayed Best Bid Offer market in the fourth quarter. ISE Holdings is also a majority owner of Longitude LLC, which operates an innovative platform for events markets trading. Additionally, ISE offers enhanced market data products for sophisticated investors. ISE continually enhances its trading systems and develops new products, including index options and market data, to provide investors with the best marketplace and investment tools to trade smarter. For more information about ISE, its options products and its technology, visit www.iseoptions.com, for more information about the ISE Stock Exchange, visit www.isestock.com and for more information about Longitude, visit www.longitude.com.