ISE Intl Secs Exchange Hldgs

The International Securities Exchange (NYSE:ISE) today announced that ISE FX Options will begin trading on Tuesday, April 17. On April 3, the SEC approved ISE�s rule filing for its foreign currency options, clearing the way for the upcoming launch. Trading will initially take place in the following four currency pairs: USD/EUR (Symbol:EUI), USD/GBP (Symbol:BPX), USD/JPY (Symbol:YUK), and USD/CAD (Symbol:CDD). David Krell, ISE�s President and Chief Executive Officer, said, �We are excited to announce the imminent launch of ISE FX Options, which will allow investors to gain foreign currency exposure through an exchange-traded product. We structured ISE FX Options using a straightforward convention that will enable current options investors to easily trade these products through their existing brokerage accounts.� Timber Hill LLC will serve as the Primary Market Maker (PMM�) in all four of the currency pairs that will initially launch. Additionally, Citigroup Derivatives Markets Inc., Lehman Brothers Inc., and Optiver US, LLC will act as Competitive Market Makers (CMMs�) in a variety of the products. ISE FX Options provide investors with exposure to rate movements in the global foreign currency markets and allow traders to express their views on the strength or weakness of the US dollar without the need to hold the actual foreign currency. As exchange-listed securities, ISE FX Options can be easily accessed through most major brokerage accounts that are approved for trading equity and index options. These products will be cash-settled and have European style exercise. Investors can access the underlying rates for ISE FX Options from several leading market data vendors and financial websites, including Bloomberg, ILX, Reuters, and Yahoo! Finance. All ISE FX Options have U.S. Dollar-based underlying values, which are scaled as needed to create an underlying value similar to traditional equity or index options. For example, if the current USD/EUR rate is .7829 (0.7829 EUR per 1.0�USD), the underlying value for the USD/EUR ISE FX Option would be 78.29. USD/EUR USD/GBP USD/JPY USD/CAD Bloomberg EUI BPXX YUK CDD ILX EUI BPX YUK CDD Reuters .EUI .BPX .YUK .CDD Yahoo! Finance ^EUI ^BPX ^YUK ^CDD NOTE TO EDITORS: There is a caret preceding each of the symbols listed on the Yahoo! Finance line in the above chart. This symbol may not appear properly in some systems. For more information, please visit www.isefxoptions.com. 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� are slated to launch 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. Forward Looking Statements Certain matters discussed in this press release are �forward looking statements� intended to qualify for the safe harbor from liability established by the Private Securities Litigation Reform Act of 1995. These statements relate to future events or our future financial performance, and involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements, to be materially different from those contemplated by the forward looking statements. We undertake no ongoing obligation, other than that imposed by law, to update these statements. Factors that could affect our results, levels of activity, performance or achievements and cause them to materially differ from those contained in the forward looking statements can be found in our filings with the Securities and Exchange Commission, including our annual report on Form 10-K, current reports on Form 8-K and quarterly reports on Form 10-Q, as amended.