Stock index futures are delivered in cash, and ultimately they will be realized in cash. No one has to pay for a contract without a transaction. After the stock index futures contract expires, it must be closed by itself. If the position is not closed, will the system automatically force the position to be closed? Because stock index futures have a fixed maturity date, they must be closed or delivered at maturity.

The full name of stock index futures (SPIF) is stock index futures, which can also be called stock index futures and futures index. It refers to the standardized futures contract with the stock price index as the subject matter. The two parties agree to buy and sell the underlying index according to the size of the stock price index determined in advance at a future date, and settle the difference in cash after the expiration.