Commodity market in Sumer between 4500 BC and 4000 BC. Sumerians first used clay tokens sealed in a clay vessel, then clay writing tablets to represent the amount—for example, the number of goats, to be delivered. These promises of time and date of delivery resemble futures contract. Early civilizations variously used pigs, rare seashells, or other items as commodity money. Since that time traders have sought ways to simplify and standardize trade contracts. Gold and silver markets evolved in classical civilizations. At first the precious metals were valued for their beauty and intrinsic worth and were associated with royalty. In time, they
Commodity broker CPO, as well as their RCR/APs, are required to register with the Commodity Futures Trading Commission (CFTC), and be members of the National Futures Association (NFA). Floor brokers/traders who are members or employees of a commodity exchange generally do not need to be members of the NFA, as they are regulated by the exchange. Commodity brokers can trade commodities on various exchanges, which specialize in trading a certain commodity type. The common commodity exchanges include the New York Mercantile Exchange (NYMEX) that trades in a variety of commodities, Chicago Board of Trade (CBOT) that trades in wheat, rice, soybeans, oats,