On May 9, 2017, CBOE Holdings, Inc. issued a press release announcing its financial results for the quarter ended March 31, 2017. A copy of the corrected version of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

The information set forth under this Item 2.02, including the Exhibit attached hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, except as shall be expressly set forth by specific reference in such filing.

ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS.

(d) Exhibits

99.1 Corrected Press Release

About CBOE HOLDINGS, INC. (NASDAQ:CBOE)

CBOE Holdings, Inc. is a holding company. The Company’s principal business is operating markets that offer for trading options on various market indexes (index options), on an exclusive basis and futures contracts, as well as on non-exclusive multiply listed options, such as options on the stocks of individual corporations (equity options), and options on other exchange-traded products (ETP options), such as exchange-traded funds (ETF options) and exchange-traded notes (ETN options). The Company operates over three stand-alone exchanges. The Company’s subsidiary, Chicago Board Options Exchange, Incorporated (CBOE), is its options market that offers trading in listed options through a single system that integrates electronic trading and open outcry trading. The options contracts listed for trading include options on indexes, equities and ETPs. In addition, the Company provides a marketplace for trading futures contracts through its subsidiary, CBOE Futures Exchange, LLC.

CBOE HOLDINGS, INC. (NASDAQ:CBOE) Recent Trading Information

CBOE HOLDINGS, INC. (NASDAQ:CBOE) closed its last trading session 00.00 at 84.84 with 1,336,747 shares trading hands.