Beginning on the trade date for Monday April 8, 2013, several changes in contract specifications for S&P GSCI futures, options on S&P GSCI futures and S&P GSCI Excess Return (“ER”) futures will become effective for all contract months. These contracts are listed by and subject to the rules of CME.
CME Group is the world's leading and most diverse 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.