CBOE Holdings, Inc. Announces Date of Second-Quarter 2010 Earnings Release and Conference Call

CHICAGO, June 23 /PRNewswire-FirstCall/ -- CBOE Holdings, Inc. 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.

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A live audio webcast of the earnings call will be available on the company's website at http://www.cboe.com/ under Investor Relations, Events & Presentations. Participants may also listen via telephone by dialing [phone] from the United States or Canada, or [phone] 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 [phone] within the U.S. and Canada, or [phone] for international callers, using replay code 83665012.

CBOE Holdings, Inc. is the holding company for Chicago Board Options Exchange (CBOE) and other subsidiaries. CBOE, the largest U.S. options exchange and creator of listed options, continues to set the bar for options trading through product innovation, trading technology and investor education. CBOE offers equity, index and ETF options, including proprietary products, such as S&P 500 options (SPX), the most active U.S. index option, and options on the CBOE Volatility Index (VIX). Other products engineered by CBOE include equity options, security index options, LEAPS options, FLEX options, and benchmark products such as the CBOE S&P 500 BuyWrite Index (BXM). CBOE's Hybrid Trading System incorporates electronic and open-outcry trading, enabling customers to choose their trading method. CBOE's Hybrid is powered by CBOEdirect, a proprietary, state-of-the-art electronic platform that also supports the CBOE Futures Exchange (CFE), CBOE Stock Exchange (CBSX) and OneChicago. CBOE is home to the world-renowned Options Institute and http://www.cboe.com/, named "Best of the Web" for options information and education.

CBOE is regulated by the Securities and Exchange Commission (SEC), with all trades cleared by the AAA-rated Options Clearing Corporation (OCC).

CBOE®, Chicago Board Options Exchange®, CBOEdirect®, CBOE Volatility Index®, VIX®, FLEX®,, LEAPS®, CBSX® and CBOE Stock Exchange® are registered trademarks of Chicago Board Options Exchange, Incorporated (CBOE). SPX(SM), BXM(SM) and Long-term Equity AnticiPation Securities(SM) are service marks of CBOE. CFE® is a registered trademark and CBOE Futures Exchange(SM) is a service mark of CBOE Futures Exchange, LLC.

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CBOE Holdings, Inc.

CONTACT: Media, Gail Osten, [phone], [e-mail], or Gary
Compton, [phone], [e-mail], or Analysts, Debbie Koopman,
[phone], [e-mail], all of CBOE Holdings, Inc.

Web Site: http://www.cboe.com/