The CME Reference Data API weekly maintenance periods will now occur on Friday from 10:00 p.m. CT to Saturday 7:00 p.m. CT. During these times, data may be unavailable or unreliable.

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.

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