CME Globex Enhancement for Henry Hub Natural Gas Last Day Financial Futures Contract

This SER supersedes SER #7087R dated June 3, 2014 to reflect amended effective date.

 Effective Sunday, June 22, 2014 for trade date Monday, June 23, 2014, the New York Mercantile Exchange, Inc. (NYMEX or Exchange) will enable Henry Hub Natural Gas Last Day Futures to be traded on CME Globex in quantity of 2500 mmbtu per month under the Globex code NNE. Please note the code NN is still the Clearing code and the Globex code for trade execution in 2500 mmbtu per day.

In addition to the CME Globex trading platform, this contract is also listed for trading on the NYMEX trading floor, and for submission for clearing through CME ClearPort under the code NN.

The Commodity Futures Trading Commission (CFTC) will be notified of the functionality enhancement during the week of June 30, 2014 via the weekly notification procedures set forth in Part 40 of the CFTC Regulations.

Please refer questions on this subject to:

Research and Product Development

Adila Mchich                             Adila.mchich@cmegroup.com                           (212) 299-2270

Products and Services

Stephen Smith                          Stephen.smith@cmegroup.com                         (713) 658-9295