Contract Specifications:ZC,CBOT Trading Unit: 5,000 bushels Tick Size: 1/4 cent/bushel ($12.50/contract) Quoted Units: US $ per bushel Initial Margin: $2,025 Maint Margin: $1,500 Contract Months: Mar, May, Jul, Sep, Dec First Notice Day: Last business day of month preceding contract month. Last Trading Day: The business day prior to the 15th calendar day of the contract month. Trading Hours: Electronic: 5:00 p.m. - 2:00 p.m. Central Time

Trading in expiring contracts closes at noon on the last trading day. Daily Limit: 20 cents/bu ($1,000/contract), none for spot month