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Henry Hub Natural Gas Last Day Financial Futures Contract Specs

Contract Unit CME Globex: NN – 2,500 MMBtu per day
                      NNE (clears as NN) – 2,500 MMBtu per month
CME ClearPort: NN 2,500 MMBtu per month or per day
Price Quotation U.S. dollars and cents per MMBtu
Trading Hours Sunday - Friday 6:00 p.m. - 5:00 p.m. (5:00 p.m. - 4:00 p.m. CT) with a 60-minute break each day beginning at 5:00 p.m. (4:00 p.m. CT)
Minimum Price Fluctuation 0.001 per MMBtu = $2.50
Product Code CME Globex: NN
CME ClearPort: NN
Clearing: NN
Listed Contracts Monthly contracts listed for the current year and the next 12 calendar years. Add monthly contracts for a new calendar year following the termination of trading in the December contract of the current year.
Settlement Method Financially Settled
Floating Price The Floating Price for each contract month will be equal to the NYMEX (Henry Hub) Natural Gas Futures contract final settlement price for the corresponding contract month on the last trading day for that contract month.
Termination Of Trading Trading terminates 3 business days prior to the contract month.
Trade At Marker Or Trade At Settlement Rules Trading at settlement is available for spot (except on the last trading day), 2nd and 3rd months and subject to the existing TAS rules. Trading in all TAS products will cease daily at 2:30 PM Eastern Time. The TAS products will trade off of a "Base Price" of 0 to create a differential (plus or minus 10 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.
TAS trading terminates 4 business days prior to the contract month.
Settlement Procedures Delivery under the contract shall be by cash settlement. Final settlement, following termination of posting for a contract month, will be based on the Floating Price. The final settlement price will be the Floating Price calculated for each contract month.

Daily NYMEX Henry Hub Futures Settlement Procedure
Position Limits NYMEX Position Limits
Exchange Rulebook NYMEX 508
Block Minimum Block Minimum Thresholds
Price Limit Or Circuit Price Limits
Vendor Codes Quote Vendor Symbols Listing