(The following is a reformatted version of a press release
issued by the Chicago Board Options Exchange and received via
electronic mail. The release was confirmed by the sender.) 
News Release
For Immediate Release 
Nearly 1.8 Million Contracts Change Hands 
CHICAGO, IL - October 8, 2013 - Chicago Board Options Exchange®
(CBOE®) today reported that options on the CBOE Volatility
Index® (VIX® index) established an all-time, single-day volume
record. Options volume totaled an estimated 1,782,329 contracts,
surpassing the previous record of 1,399,867, contracts traded on
April 15, 2013. 
Year to date through September, VIX options average daily volume
(ADV) was 565,040 contracts, a 32-percent increase over the same
period a year ago. VIX futures ADV year to date through
September was nearly 160,000 contracts, an 86-percent increase
over the same period a year ago. 
About CBOE Holdings 
CBOE Holdings, Inc. (NASDAQ: CBOE) is the holding company for
Chicago Board Options Exchange (CBOE), 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, LEAPS options, FLEX
options, and benchmark products such as the CBOE S&P 500
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. 
CBOE®, Chicago Board Options Exchange®, CFE®, FLEX®, LEAPS®,
CBOE Volatility Index® and VIX® are registered
trademarks, and BuyWriteSM, BXMSM, CBOE Futures ExchangeSM,
SPXSM and The Options Institute 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 and CFE. 
Media Contacts:                     Analyst Contact:
Gail Osten        Gary Compton      Debbie Koopman
(312) 786-7123    (312) 786-7612    (312) 786-7136
osten@cboe.com    comptong@cboe.com koopman@cboe.com 
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