CBOE Holdings, Inc. to Present at Barclays Capital Global Financial Services Conference on Wednesday, September 14

CHICAGO, September 7, 2011 — CBOE Holdings, Inc. (Nasdaq: CBOE) today announced that Edward T. Tilly, Executive Vice Chairman, will present at the Barclays Capital Global Financial Services Conference in New York City on Wednesday, September 14, 2011, at 9:00 a.m. Eastern time.

The presentation, to be broadcast live over the Internet, can be accessed at www.cboe.com under Investor Relations, Events and Presentations. Approximately 24 hours after the live presentation, an audio Webcast will be available for replay at the same address.

CBOE Holdings, Inc. is the holding company for Chicago Board Options Exchange (CBOE), C2 Options Exchange 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 C2 Options Exchange (C2), the CBOE Futures Exchange (CFE), CBOE Stock Exchange (CBSX) and OneChicago. CBOE is home to the world-renowned Options Institute and 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 OCC.

CBOE Media Contacts:

Gail Osten

(312) 786-7123

osten@cboe.com

Gary Compton

(312) 786-7612

comptong@cboe.com

Analyst Contact:

Debbie Koopman

(312) 786-7136

koopman@cboe.com