Investor and Media Conference Call: CBOE Holdings will host a conference call today at 9:00 a.m. Central Time to discuss the leadership transition. At the conclusion of the prepared remarks, William Brodsky, Edward Tilly and Edward Provost will be available for analyst and media questions. The conference call will be publicly available via live webcast from the Investor Relations section of the company's website at www.cboe.com under "Events & Presentations." Participants may also listen via telephone by dialing (877) 372-0876 from the United States or Canada, or (253) 237-1167 for international callers. Telephone participants should place calls 10 minutes prior to the start of the call. The webcast will be archived on the company's website for replay. A telephone replay of the call also will be available until December 19, 2012, by dialing (800) 585-8367 within the U.S. and Canada, or (404) 537-3406 for international callers, using replay code 79450651. About CBOE Holdings: 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 ETF 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 is regulated by the Securities and Exchange Commission (SEC), with all trades cleared by the OCC.