Product Modification Summary: Amendments to Certain Options on S&P 500 Stock Price Index Futures Contracts to Align with Unscheduled Primary Listing Exchange Holidays - Effective: November 5, 2018

Effective Sunday, November 4, 2018 for trade date Monday, November 5, 2018, and pending all relevant CFTC regulatory review periods, Chicago Mercantile Exchange Inc. (“CME” or “Exchange”) will amend the Termination of Trading rules for the Standard and Poor’s options contracts that expire on Monday as noted in the table below (collectively, the “Contracts”) to align the Contracts’ trading schedules with unscheduled market holidays declared by the Primary Listing Exchanges1 (collectively, the “Rule Amendments”), as summarized.

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