CBOE Holdings Reports April 2011 Trading Volumes:

CHICAGO, May 2, 2011 /PRNewswire/ -- CBOE Holdings, Inc. (Nasdaq: CBOE) today announced that April trading volume for options on the Chicago Board Options Exchange (CBOE) and C2 Options Exchange (C2), the company's alternative all-electronic market, combined, totaled 89.7 million contracts, an average daily volume (ADV) of 4.5 million contracts. Futures trading on CBOE Futures Exchange (CFE) established its second-highest monthly volume of 834,892 contracts in April, an ADV of 41,744 contracts.

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CBOE Options Trading:

• CBOE's April ADV of 4.31 million contracts was a 19-percent decrease from 5.30 million contracts per day in April 2010 and an eight-percent decrease from March 2011 ADV of 4.67 million contracts.  Year to date through April, total CBOE ADV of 4.74 million contracts was even with the same period in 2010.
• CBOE ETF options – April 2011 ETF options ADV was 1.21 million contracts, up one percent from 1.20 million contracts ADV in April 2010 and down four percent from March 2011 ADV of 1.25 million contracts.  
• CBOE index options – April 2011 index options ADV was just under one million contracts, down 13 percent from 1.15 million contracts ADV in April 2010 and down 21 percent from March 2011 ADV of   1.27 million contracts.  
• CBOE equity options – April 2011 equity options ADV was 2.11 million contracts, down 29 percent from 2.97 million contracts ADV in April 2010 and down two percent from March 2011 ADV of 2.15 million contracts.  
• The top five most actively traded index and ETF options at CBOE during April were the S&P 500 Index (SPX), Standard and Poor's Depositary Receipts (SPY), CBOE Volatility Index (VIX), iShares Silver Trust (SLV) and PowerShares QQQ Trust (QQQ).
• The top five most actively traded equity options during April were Citigroup (C), Apple (AAPL), Bank of America (BAC), Cisco Systems (CSCO) and Ford Motor Company (F).

CBOE Trading Volume and Market Share:

Expanded April volume information for CBOE index and ETF options is available at: www.cboe.com/data/monthlyvolume.aspx.

CBOE Market Share: CBOE's market share of total U.S. options industry volume in April was 25.7 percent, down 0.1 of a percentage point from March 2011 and down 5.2 percentage points from April 2010.  If the volume from dividend trades was excluded from CBOE's data for April 2011, the Exchange's total market share for April would increase to 26.5 percent from 25.7 percent, an increase of 0.8 market share points. Exclusion of dividend trades from total industry volume data presents a more relevant measure of the relative trends in the options business.

CBOE April Market Share by Product:

• Index options – CBOE's market share was 93.9 percent, down 0.5 of a percentage point from March 2011 and up 1.2 percentage points from April 2010.
• ETF options – CBOE's market share was 21.2 percent, up 3.0 percentage points from March 2011 and down 4.1 percentage points from April 2010.
• Equity options – CBOE's market share was 21.0 percent, down 0.7 of a percentage point from March 2011 and down 5.4 percentage points from April 2010.

C2 Trading Volume and Market Share:

In April, C2 ADV was 174,600 contracts, down three percent from March 2011 ADV of 179,400 contracts. C2 equity option ADV in April was consistent with March 2011, and ETF options volume decreased by five percent compared with March.

C2 Market Share:  C2's market share of total U.S. options industry volume in April was one percent, even with market share in March 2011.

CFE Futures Trading:

• With trading volume totaling 834,892 contracts, CBOE Futures Exchange (CFE) recorded its second-most-active trading month in April.  Average daily volume at CFE in April was 41,744 contracts, up 196 percent from April 2010 and down ten percent from March 2011, when an all-time record CFE volume month was posted.
• CBOE Volatility Index (VIX) futures, the most active of CFE's products, posted monthly volume of 834,110 contracts in April, an ADV of 41,706 contracts.  VIX futures ADV was up 196 percent from April  2010 and down ten percent from the record-high ADV established in March 2011.
• April also marked the busiest April ever and the nineteenth consecutive month of year-over-year volume increases for CFE and VIX futures.

CBOE Holdings Average Transaction Fee Per Contract:

The company will report its average transaction fee per contract for the three months ended March 31, 2011, in conjunction with its quarterly earnings news release, which will be issued on Thursday, May 5.  This information also will be posted to the Investor Relations section of CBOE's web site under Financial Information, Supplemental Information.

About CBOE Holdings:

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 and is powered by CBOEdirect, a proprietary, state-of-the-art electronic platform that also supports the C2 Options Exchange (C2), 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 AAA-rated Options Clearing Corporation (OCC).

CBOE®, Chicago Board Options Exchange® , CBSX® , CBOE Stock Exchange®, CFE®, CBOEdirect®, FLEX®, Hybrid®, LEAPS®, CBOE Volatility Index® and VIX® are registered trademarks, and BuyWrite(SM), BXM(SM), C2(SM), C2 Options Exchange, Incorporated(SM), CBOE Futures Exchange(SM) , SPX(SM) and The Options Institute(SM) are servicemarks of Chicago Board Options Exchange, Incorporated (CBOE). Standard & Poor's® , S&P® , S&P 500® , Standard and Poor's Depositary Receipts®, and SPDR® are registered trademarks of Standard & Poor's Financial Services, LLC . and have been licensed for use by CBOE. All other trademarks and servicemarks are the property of their respective owners.

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SOURCE CBOE Holdings, Inc.