Product Summary for Quote Vendors - NYMEX - Financially Settled Calendar Spread Option contracts on Crude Oil, Brent Crude Oil - and Natural Gas Futures contracts - Effective Sunday, January 25, 2009

CME Group is the world’s leading derivatives marketplace. The company is comprised of four Designated Contract Markets (DCMs). 
Further information on each exchange's rules and product listings can be found by clicking on the links to CME, CBOT, NYMEX and COMEX.