The full name of stock index futures is stock price index futures, which can also be called stock index futures and futures index. It refers to the standardized futures contract with the stock index as the subject matter. The two sides agreed that on a specific date in the future, they can buy and sell the underlying index according to the size of the stock index determined in advance. As a type of futures trading, stock index futures trading has basically the same characteristics and processes as ordinary commodity futures trading. Stock index futures are a kind of futures, which can be roughly divided into two categories, commodity futures and financial futures. The main varieties of financial futures can be divided into foreign exchange futures, interest rate futures, stock index futures and treasury bonds futures. Stock index futures are futures contracts with stock index as the subject matter. After a certain period of time, the two parties trade the price level of the stock index and make delivery by cash settlement of the price difference. The full name of stock index futures is stock index futures, which can also be called stock index futures and futures index.

Compared with stocks, stock index futures have several distinct characteristics, which are particularly important for stock investors: futures contracts have an expiration date, and stocks cannot be held indefinitely after purchase, and the number of stocks will not decrease under normal circumstances. However, stock index futures have a fixed expiration date and will be delisted when it expires. Therefore, trading stock index futures cannot be equated with buying and selling stocks. After trading, we must pay attention to the expiration date of the contract to decide whether to close the position in advance or wait for the expiration of the contract (fortunately, the stock index futures are settled in cash and do not need to actually deliver the stock), or to transfer the position to next month. Futures contracts are margin transactions, and stock index futures contracts must be settled every day. Generally, you can buy and sell a contract by paying about 10- 15% of the contract face value, which improves the profit space, but on the other hand, it also brings risks, and you must settle the profit and loss every day. After buying a stock, the book profit and loss are not settled before selling.