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U.S. Treasury Bond Weekly Options Contract Specs

Minimum Price Fluctuation 1/64th of a point ($15.625)
Trading Hours CME Globex: Sunday 5:00 p.m. - Friday - 4:00 p.m. CT with a 60-minute break each day beginning at 4:00 p.m. CT
Open Outcry: MON - FRI: 7:20 a.m. - 2:00 p.m.
CME ClearPort: Sunday 5:00 p.m. - Friday 5:45 p.m. CT with no reporting Monday - Thursday from 5:45 p.m. – 6:00 p.m. CT
Product Code CME Globex: ZB1,ZB2,ZB3,ZB4,ZB5
CME ClearPort: US1,US2,US3,US4,US5
Open Outcry: US1,US2,US3,US4,US5
Clearing: US1,US2,US3,US4,US5
Termination Of Trading Default: Week 1 - 1st Friday of the month
Week 2 - 2nd Friday of the month
Week 3 - 3rd Friday of the month
Week 4 - 4th Friday of the month
Week 5 - 5th Friday of the month

Unexercised options shall expire at 7:00 p.m. CT on the last trading day
Mid-Curve A given Friday that is not also the last trading day of a monthly serial or quarterly Treasury option. If such a Friday is the last trading day of a monthly serial or quarterly Treasury option, there will be no Weekly Treasury option listed for trading for that expiration date.
Position Limits CBOT Position Limits
Exchange Rulebook CBOT 18A
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-half of one point for all weekly expirations. The minimum strike price range will include the at-the-money strike price closest to the current futures price plus the next forty (40) consecutive higher and the next forty (40) 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. Options that expire in-the-money on the last trading day are automatically exercised, unless specific instructions are given to CME Clearing.
Settlement Method Deliverable
Underlying U.S. Treasury Bond Futures

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