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Chicago SRW Wheat Futures Contract Specs

Contract Unit 5,000 bushels (~ 136 metric tons)
Price Quotation U.S. cents per bushel
Trading Hours Sunday – Friday: 7:00 p.m. – 7:45 a.m. CT and
Monday – Friday: 8:30 a.m. – 1:20 p.m. CT

TAS: Sunday - Friday 7:00 p.m. - 7:45 a.m. and ?
Monday - Friday 8:30 a.m. - 1:15 p.m. CT
Minimum Price Fluctuation 1/4 of one cent (0.0025) per bushel = $12.50
Product Code CME Globex: ZW
CME ClearPort: W
Clearing: W
TAS: ZWT
Listed Contracts 15 monthly contracts of Mar, May, Jul, Sep, Dec listed annually following the termination of trading in the July contract of the current year. 
Settlement Method Deliverable
Termination Of Trading Trading terminates on the business day prior to the 15th day of the contract month.
Trade At Marker Or Trade At Settlement Rules Trading at Settlement (TAS) is subject to the requirements of Rule 524.A. TAS trades off a "Base Price" of zero (equal to the daily settlement price) to create a differential versus the daily settlement price in the underlying futures contract month. The TAS clearing price equals the daily settlement price of the underlying futures contract month plus or minus the TAS transaction price.

TAS Table
Settlement Procedures Wheat Settlement Procedures
Position Limits CBOT Position Limits
Exchange Rulebook CBOT 14
Block Minimum Block Minimum Thresholds
Price Limit Or Circuit Price Limits
Vendor Codes Quote Vendor Symbols Listing
Last Delivery Date Second business day following the last trading day of the delivery month.
Grade And Quality #2 Soft Red Winter at contract price, #1 Soft Red Winter at a 3 cent premium, other deliverable grades listed in Rule 14104.