The difference between short-term trading of stock index futures and gambling is that the losses of stock index futures are limited, the gains are infinite, and the losses and gains of gambling are infinite. For example, the margin for buying a contract is 2000 yuan, and when the option expires, you can buy 10000 shares at the price of10 yuan. Now that the stock has risen to 15 yuan per share, you can not perform the contract, but you can't get back the deposit, that is, you only lose 2,000 yuan, and you will lose 5,000 yuan when you perform the contract. ?

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. 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.