The last trading day of the stock option contract is set as the fourth Wednesday of the expiration month of each contract (postponed in case of legal holidays), and the exercise date of the contract is the same as the last trading day (e-day). The exercise delivery date is E+ 1 (for the exercise party, the underlying securities can be prepared on E+ 1; For the exerciser, the exercise securities E+ 1 will arrive at the end of the day and can be sold on T+2).

The delivery date of China's stock index futures is the third Friday of the contract delivery month.