Corn Futures Contract Specs

Contract Unit	5,000 bushels (~ 127 Metric Tons)
Price Quotation	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
Minimum Price Fluctuation	1/4 of one cent per bushel ($12.50 per contract)
Product Code	CME Globex: ZC CME ClearPort: C Clearing: C TAS: ZCT
Listed Contracts	March (H), May (K), July (N), September (U) & December (Z)
Settlement Method	Deliverable
Termination Of Trading	The business day prior to the 15th calendar day of the contract month.
Trade At Marker Or Trade At Settlement Rules	Trading at settlement is available for first 3 listed futures contracts, nearby new-crop December contract (if not part of the first 3 outrights), first to second month calendar spread, second to third month calendar spread, and nearest Jul-Dec spread when available (when July is listed); and are subject to the existing TAS rules. The Last Trade Date for CBOT Grain and Oilseed TAS products will be the First Position Day (FPD) of the front-month contract (FPD is the second to last business day in the month prior to the nearby contract month). Trading in all CBOT Grain TAS products will be 19:00-07:45 and 08:30-13:15 Chicago time. All resting TAS orders at 07:45 will remain in the book for the 08:30 opening, unless cancelled. TAS products will trade a total of four ticks above and below the settlement price in ticks of the corresponding futures contract (0.0025), off of a "Base Price" of 0 to create a differential (plus or minus 4 ticks) versus settlement in the underlying product on a 1 to 1 basis. A trade done at the Base Price of 0 will correspond to a "traditional" TAS trade which will clear exactly at the final settlement price of the day.
Settlement Procedures	Corn Settlement Procedures
Position Limits	CBOT Position Limits
Exchange Rulebook	CBOT 10
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	Through December 2018: #2 Yellow at contract Price, #1 Yellow at a 1.5 cent/bushel premium, #3 Yellow at a 1.5 cent/bushel discount. As of March 2019: #2 Yellow at contract Price, #1 Yellow at a 1.5 cent/bushel premium, #3 Yellow at a discount between 2 and 4 cents/bushel depending on broken corn and foreign material and damage grade factors.

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CME Group is the world's leading and most diverse derivatives marketplace. The company is comprised of four Designated Contract Markets (DCMs). Further information on each exchange's rules and product listings can be found by clicking on the links to CME, CBOT, NYMEX and COMEX.