Business: CBOE Holdings, Inc. 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, Weeklys options, LEAPS options, FLEX options, and benchmark products such as the CBOE S&P BuyWrite Index (BXM).