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Ultra 10-Year Treasury Note Wednesday Weekly Options Contract Specs

Options
Contract Unit One (1) 10-Year U.S. Treasury Note Future (TN).
Minimum Price Fluctuation 1/64th of a point ($15.625 per contract), rounded to the nearest cent/contract.
For cabinet transactions only, minimum tick sizes range from $1.00 to $15.00, in $1.00 increments per option contract.
Trading Hours CME Globex: Sunday - Wednesday 5:00 p.m. - 4:00 p.m. (6:00 p.m. - 5:00 p.m. ET) with a 60-minute break each day beginning at 4:00 p.m. (5:00 p.m. ET)
Default: Mon - Fri: 7:20 a.m. -  2:00 p.m. CT
CME ClearPort: Sunday - Wednesday 5:00 p.m. - 4:00 p.m. (6:00 p.m. - 5:00 p.m. ET) with a 60-minute break each day beginning at 4:00 p.m. (5:00 p.m. ET)
Product Code CME Globex: WX1,WX2,WX3,WX4,WX5
CME ClearPort: WX1,WX2,WX3,WX4,WX5
Open Outcry: WX1,WX2,WX3,WX4,WX5
Clearing: WX1,WX2,WX3,WX4,WX5
Listed Contracts Nearest 2 Weeklies
Termination Of Trading Week 1 - 1st Wednesday of the month
Week 2 - 2nd Wednesday of the month
Week 3 - 3rd Wednesday of the month
Week 4 - 4th Wednesday of the month
Week 5 - 5th Wednesday of the month
 
For a given Wednesday Weekly option contract, the last day of trading shall be the Wednesday on which such option is designated to expire. If such Wednesday is not a business day, then the last day of trading in such option shall be the first business day preceding such Wednesday. On its last day of trading, trading in such option shall terminate at 2:00 p.m. CT. 
Position Limits CBOT Position Limits
Exchange Rulebook CBOT 26A
Block Minimum Block Minimum Thresholds
Price Limit Or Circuit Price Limits
Vendor Codes Quote Vendor Symbols Listing
Strike Price Listing Procedures Strike prices will be listed in increments of one-quarter of one point. The minimum strike price range will include the at-the-money strike price closest to the current futures price plus the next one hundred consecutive higher and the next one hundred consecutive lower strike prices.
Exercise Style American Style: The buyer of an option may exercise the option on any business day prior to expiration by giving notice to CME Clearing by 6:00 p.m. CT.  Following termination of trading, options that expire in‐the‐money are automatically exercised into underlying futures, with no allowance for contrary instruction.  Automatic exercise is determined in relation to the daily settlement price of the option’s underlying futures contract.
Settlement Method Deliverable
Underlying Ultra 10-Year U.S. Treasury Note Futures