Corn futures are standardized, exchange-traded contracts in which the contract buyer agrees to take delivery, from the seller, a specific quantity of corn (i.e. 50 tonnes) at a predetermined price on a future delivery date. Corn Futures are traded at the Chicago Board of Trade (CBOT), NYSE Euronext (Euronext) and Tokyo Grain Exchange (TGE). Commodities are traded based on margin, and the margin changes based on market volatility and the current face value of the contract. For example, to trade a corn contract on the CBOT, a trader may be required to maintain a margin of $1,350, which is approximately 4.5% of the face value.