Trading Unit: One US Treasury Bond having a face value at maturity of $ 100,000 or multiple thereof

Deliverable Grades: US. Treasury bonds that, if callable, are not callable for at least 15 years from tire first day of the delivery month or, if not callable, have a maturity of at least 15 years from the first business day of the delivery month. The conversion factor is the price of the delivered bond ($1 par value) to yield 8 Percent

Price Quote: Points ($ 1,000) and thirty-seconds of a point; for example, 80-16 equals 80 and 1/2

Tick Size: 1/32 of a point ($31.25/contract); par is on the basis of 100 points.

Daily Price Limit: 3 points ($3,000/contract) above or below the previous day's settlement price (expandable to 4 points). limits are lifted the second business day preceding the first day of the delivery month.

Contract Months: Mar, Jun, Sep, Dec

Delivery Method: Federal Reserve book-entry wire-transfer system

Last Trading Day: Seventh business day preceding the last business day of the delivery month

Last Delivery Day: Last business day of the delivery month

Trading Hours: 7:20 a.m. - 2:00 p.m. Chicago time, Mon- Fri. Evening trading hours are 5:20 - 8:05 p.m. (CST') or 6:20 - 9:05 p.m. (CDST), Sun-Thu. Trading in expiring contracts closes at noon on the last trading day.

Ticker Symbol: US