August 21, 2015

CHICAGO, IL -- August 21, 2015 - CBOE Holdings, Inc. (NASDAQ: CBOE) today reported that trading volume at the Chicago Board Options Exchange ® (CBOE®) and the C2 Options Exchange (C2) each set a one-day trading record, with CBOE trading an estimated 11,027,570 options contracts and topping a previous single-day record of 10,919,537, set on August 8, 2011.

The all-electronic C2 Options Exchange also established a one-day record, with an estimated 749,563 options changing hands, topping its previous day volume record of 721,478, set October 15, 2014.

In addition, volume in options on CBOE's S&P 500 Index (SPX) options set a single-day record. The estimated volume of SPX options was 2,980,564 contracts. The previous single-day options record in SPX was set October 15, 2014, with 2,686,964 contracts.

Yesterday, CBOE saw in excess of 259,000 Russell 2000 (RUT) options traded, more than double the average daily volume since CBOE became the exclusive home for RUT options trading on April 1st.

About CBOE Holdings, Inc.

CBOE Holdings, Inc. (NASDAQ: CBOE) is the holding company for Chicago Board Options Exchange (CBOE), the CBOE Futures Exchange (CFE) and other subsidiaries. CBOE, the largest U.S. options exchange and creator of listed options, continues to set the bar for options and volatility trading through product innovation, trading technology and investor education. CBOE Holdings offers equity, index and ETP options, including proprietary products, such as S&P 500 options (SPX), the most active U.S. index option, and options and futures on the CBOE Volatility Index (the VIX Index). Other products engineered by CBOE include equity options, security index options, Weeklys options, LEAPS options, FLEX options, and benchmark products such as the CBOE S&P BuyWrite Index (BXM). CBOE Holdings is home to the world-renowned Options Institute and www.cboe.com, the go-to place for options and volatility trading resources.

Media Contacts:

Analyst Contact:

Suzanne Cosgrove Gary Compton Debbie Koopman
(312) 786-7123 (312) 786-7612 (312) 786-7136
cosgrove@cboe.com comptong@cboe.com koopman@cboe.com

CBOE®, Chicago Board Options Exchange®, CFE®, Execute Success®, FLEX®, LEAPS®, CBOE Volatility Index® and VIX® are registered trademarks, and BuyWriteSM, CBOE Futures ExchangeSM, BXMSM, WeeklysSM and The Options InstituteSM are service marks of Chicago Board Options Exchange, Incorporated (CBOE). Standard & Poor's®, S&P® and S&P 500® are registered trademarks of Standard & Poor's Financial Services, LLC and have been licensed for use by CBOE, CFE and C2.

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