Expansion of Trading and Clearing Sessions for Pine Prairie Energy Center Natural Gas Futures

Please be advised that effective Sunday, July 10, 2011, for trade date Monday, July 11, 2011, the New York Mercantile Exchange, Inc. (NYMEX or Exchange) will expand the hours of trading and clearing for the three Pine Prairie Energy Center (PPEC) physically delivered natural gas futures contracts, listed below, such that the trading and clearing sessions will begin at 1:00 p.m. (12:00 p.m. Chicago Time/CT) instead of 2:00 p.m. (1:00 p.m. CT) Monday – Thursday.

·         Pine Prairie Energy Center (PPEC) Physically Delivered Natural Gas Daily/Weekend Futures (code PPD, chapter 227);

·         Pine Prairie Energy Center (PPEC) Physically Delivered Natural Gas BALMO Futures (code PPB, chapter 228); and

·         Pine Prairie Energy Center (PPEC) Physically Delivered Natural Gas Monthly Futures (code PPM, chapter 229).

Amended Globex trading and ClearPort OTC Sessions:

Sunday 6:00 p.m. - Monday 11:30 a.m. (5:00 p.m. -10:30 a.m. CT),

Monday - Friday 1:00 p.m. - 11:30 a.m. (12:00 p.m. - 10:30 a.m. CT) with no 1:00 p.m. (12:00 p.m. CT) session on Friday, and a 45-minute break each day beginning at 5:15 p.m. (4:15 p.m. CT).