Contract Specifications:ZW,CBOT Trading Unit: 5,000 bushels Tick Size: 1/4 cent/bushel ($12.50/contract) Quoted Units: US $ per bushel Initial Margin: $1,890 Maint Margin: $1,400 Contract Months: Mar, May, Jul, Sep, Dec Last Trading Day: The business day prior to the 15th calendar day of the contract month. Trading Hours: Sunday - Friday, 7:00 pm to 7:45 am and Monday - Friday, 8:30 am to 1:15 pm CT. Cash Price: Cents/bushel Daily Limit: $0.60 per bushel expandable to $0.90 and then to $1.35 when the market closes at limit bid or limit offer.