International Securities Exchange Holdings Announces Date Of First Quarter 2007 Earnings Release And Conference Call

The International Securities Exchange Holdings, Inc. (NYSE:ISE) announced today that it will issue its earnings release for the first quarter of 2007 on Wednesday, April 25, 2007, 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) 599-9795 and dialing the participant passcode 90542572. 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 April 25, 2007 until midnight on April 26, 2007 and can be accessed by calling (888) 286-8010 and dialing the participant passcode 9891666. An archived replay of the call will be available on the Investor Relations section of the Company's web site at www.iseoptions.com.