The contracts for stock index futures trading are: this month, next month and the last two quarter-end months.

For example, it is April, so there are four contracts that can be traded at present: April, May, June and September.

Delivery: the contract for several months is delivered on the third Friday of the month, and the profit and loss are settled according to the average transaction price of the last two hours. Do not deliver inventory. Calculate the profit and loss of your account at the settlement price. Then I see.