Ticker Symbols: Calls: CS: Puts: PS

Underlying Contract: One S&P 500 futures contract

Premium Quotations: U.S. dollars: per index point

Min Price Fluct: .05 = $25.00 (cabinet = $12.50)

Daily Price Limit: Options cease trading when futures trading is halted.

Contract Months: All 12 calendar months

Trading Hours: (Chicago Time): 8:30 am-3:15 pm

Last Day of Trading: Mar, Jun, Sep, Dec: The business day before the third Friday of contract month; Jan, Feb, Apr, May, July, Aug, Oct, Nov: Third Friday of contract month.

Min Perform Bond: No performance bond required for put or call option buyers, but the premium must be paid in full; option sellers must meet additional performance bond requirements as determined by the Standard Portfolio Analysis of Risk (SPAN') performance bond system.

Exercise Procedure: An option may be exercised by the buyer up to and including the last day of trading, and on the settlement day for options in the March Quarterly Cycle. To exercise, the clearing member representing the buyer submits an Exercise Notice to the Clearing House by 7:00 p.m. on the day of exercise. Any long in-the- money option position not liquidated or exercised prior to termination of trading on the day of determination of the Final Settlement Price will be automatically exercised.