CBOE Holdings, Inc. Announces Date Of Second-Quarter 2010 Earnings Release And Conference Call

CBOE Holdings, Inc. (NASDAQ: CBOE) will announce financial results for the second quarter of 2010 before the market opens on Thursday, August 5, 2010.  A conference call with remarks by CBOE Holdings, Inc. senior management will begin at 8:30 a.m. EDT.

A live audio webcast of the earnings call will be available on the company's website at www.cboe.com under Investor Relations, Events & Presentations.  Participants may also listen via telephone by dialing (877) 372-0876 from the United States or Canada, or (253) 237-1167 for international callers.  Telephone participants should place calls ten minutes prior to the start of the call.

The call will be archived on the company's website for replay.  A telephone replay of the earnings call also will be available from approximately noon EDT, August 5, through midnight, August 19, by calling (800) 642-1687 within the U.S. and Canada, or (706) 645-9291 for international callers, using replay code 83665012.