CBOE Holdings, Inc., through its subsidiaries, operates as an options exchange and creator of listed options in the United States. The company provides marketplaces for trading options on various market indexes; futures on the VIX Index and other products; options on the stocks of individual corporations comprising equity options; and options on other exchange-traded products that include ETP options, such as exchange-traded funds and exchange-traded notes. It owns and operates CBOE primary options market, which offers trading for listed options through a single system that integrates electronic trading and traditional open outcry trading on its trading floor in Chicago; C2, an all-electronic exchange that also offers trading for listed options; and CFE, an all-electronic futures exchange, which offers futures on the VIX Index, as well as on other products. The company’s exchanges operate on its proprietary technology platform, known as CBOE Command. It has a strategic relationship with S&P OPCO LLC, S&P Dow Jones Indices, LLC; NASDAQ; Frank Russell Co.; and MSCI Inc. CBOE Holdings, Inc. was founded in 1973 and is headquartered in Chicago, Illinois.