ISE to Present at the Fox-Pitt, Kelton Global Exchange Conference

  
    
  
  
    
      The International Securities Exchange (NYSE: ISE) said today that Gary 
      Katz, Chief Operating Officer, will present at the Fox-Pitt, Kelton 
      Global Exchange Conference on Monday, May 21, 2007 at 11:10 a.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 one year.
    
    
      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 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™ launched in the 
      second quarter of 2007.
    
    
      ISE Stock Exchange, launched in September 2006 with strategic partners, 
      includes an innovative MidPoint Match™ 
      platform which offers investors continuous price improvement. MidPoint 
      Match was 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.