CHICAGO, May 20, 2013 /PRNewswire/ -- CBOE Holdings, Inc. (NASDAQ: CBOE) announced today that the company has filed additional definitive materials with the Securities and Exchange Commission with respect to the company's 2013 Annual Meeting of Stockholders. In particular, the additional definitive materials note that Douglas H. Shulman has withdrawn his candidacy for election to the company's Board of Directors at the 2013 Annual Meeting of Stockholders. Mr. Shulman was standing for election as a new director to serve until the 2014 Annual Meeting of Stockholders. (Logo: http://photos.prnewswire.com/prnh/20121022/MM97794LOGO-a) The CBOE Holdings 2013 Annual Meeting of Stockholders will be held at 9:30 a.m. CT, on Thursday, May 23, 2013, at CBOE Holdings' corporate headquarters located at 400 South LaSalle Street in Chicago. CBOE Holdings stockholders are urged to read the additional definitive materials, which are available for free at the Securities and Exchange Commission's Internet website at www.sec.gov or on the Investor Relations section of the company's website at http://ir.CBOE.com/financials.cfm. 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 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 is regulated by the Securities and Exchange Commission (SEC), with all trades cleared by the OCC. CBOE-CCBOE-OE CBOE ®, Chicago Board Options Exchange ®, CBOE Volatility Index ®, CFE ®, FLEX ®, LEAPS ® and VIX ® are registered trademarks, and BuyWrite, BXM SM, CBOE Futures Exchange SM, Execute Success SM, SPX SM and The Options Institute SM 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. SOURCE CBOE Holdings, Inc.