what is the difference between cme and cbot 
cme is the chicago mercantile exchange and trades similarly to the nymex that is to say that it trades in commodities and futures and includes energy metals etc cbot is the chicago board of trade and while it is now under the cme umbrella before the merger in 2006 the cbot used vastly different rules regulations trading engines and traded with different offerings the bottom linethe new york mercantile exchange is one of four exchanges owned and managed by the cme group the exchange deals with trades centered around commodities and futures nymex specializes in energy precious metals and agricultural commodities 