CBOE Holdings, Inc. (Nasdaq: CBOE) will announce financial results for the first quarter of 2011 before the market opens on Thursday, May 5, 2011. A conference call with remarks by CBOE Holdings, Inc. senior management will begin at8:30 a.m. Eastern Time. The presentation will be referenced during the call and will be available on the Investor Relations section of our website at www.cboe.com under Events and Presentations.
A live audio webcast of the conference call will be available on CBOE's website at http://ir.cboe.com under Events & Presentations. The presentation will be archived on the company's website for replay. In addition, participants may listen to the live conference call via telephone by using the dial-in numbers listed below.
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 Date:  | 
 Thursday, May 5, 2011  | 
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 Time:  | 
 8:30 a.m. ET  | 
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 Live Dial-in Information:  | 
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 U.S. and Canada:  | 
 (877) 372-0876  | 
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 International:  | 
 (253) 237-1167  | 
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 (Participants should dial in ten minutes prior to the start of call.)  | 
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 Replay Dial-in Information:  | 
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 U.S. and Canada:  | 
 (800) 642-1687  | 
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 International:  | 
 (706) 645-9291  | 
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 Passcode:  | 
 52962691  | 
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 (A replay of the recording will be available beginning at approximately noon ET, May 5, through midnight, May 19, 2011.)  | 
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