ISE Monthly Volume for April 2007

ISE Monthly Volume for April 2007

The International Securities Exchange (NYSE:ISE) reported that average daily trading volume for equity and index options contracts for April 2007 increased 14.7% to 2.7 million contracts as compared to 2.4 million contracts during the same period in 2006. Total equity and index options volume for the month increased 20.8% to 54.6 million contracts from 45.2 million contracts in the same year-ago period.

On a year-to-date basis, average daily trading volume of equity and index options increased 15.9% to 2.8 million contracts traded as compared to 2.4 million contracts traded in the prior year. Total year-to-date equity and index volume through April 2007 increased 15.9% to 223.8 million contracts from 193.0 million contracts in the same period last year.

ISE was the largest U.S. equity options exchange in April.

On April 2, 2007 , ISE announced that David Krell, its President and Chief Executive Officer, will retire on January 1, 2008 . Upon his retirement, Mr. Krell will remain on ISE's Board of Directors, pending required approvals. Gary Katz, ISE's Chief Operating Officer, will succeed Mr. Krell as President and Chief Executive Officer.

On April 17, 2007, ISE successfully launched trading in ISE FX Options(TM) in four currency pairs: U.S. Dollar/Euro (Symbol: EUI), U.S. Dollar/British Pound (Symbol: BPX), U.S. Dollar/Japanese Yen (Symbol: YUK), and U.S. Dollar/Canadian Dollar (Symbol: CDD).

On April 30, 2007 , Eurex and ISE announced that they have signed a definitive agreement under which Eurex will acquire ISE for approximately $2.8 billion in cash, or $67.50 per share. Pending receipt of regulatory approval by the U.S. Securities and Exchange Commission and other customary closing conditions, the transaction will create the largest transatlantic derivatives marketplace.

ISE traded more volume than any other options exchange in 898 of 1,717 issues in its listings.

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.