ISE Intl Secs Exchange Hldgs

The International Securities Exchange (NYSE: ISE) said today that David Krell, President and Chief Executive Officer, will present at Bank of America's 36th Annual Investment Conference in San Francisco on Monday, September 18, 2006 at 9:00 a.m. PT/ 12:00 p.m. ET. An audio webcast of the presentation will be broadcast live on the Investor Relations section of ISE's website at www.iseoptions.com. ISE Background The International Securities Exchange, LLC (ISE) is 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 LLC launched in the third quarter of 2006 with strategic partners and offers an innovative MidPoint Match platform, which will be followed by a fully integrated displayed Best Bid Offer (BBO) market in the fourth quarter. ISE is also a majority owner of Longitude LLC, an innovative platform for events markets trading, and 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 and for more information about the ISE Stock Exchange LLC, visit www.isestock.com. International Securities Exchange, LLC is a wholly-owned subsidiary of International Securities Exchange Holdings, Inc.