(2) The paper standard warehouse receipt shall not be used as the deposit. Before offsetting the deposit, the investor shall go through the formalities of returning the paper standard warehouse receipt to the electronic warehouse receipt;

(3) Other securities determined in the previous period.

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.

The essence of futures is to sign long-term contracts with others to buy and sell goods (or stock indexes, foreign exchange, interest rates) in order to achieve the purpose of maintaining value or making money.

If you think

Go long when it goes up (buy and open positions), and earn when it goes up (sell and close positions): price difference = closing position-opening position.

If you think

If it falls, it will be short (selling and opening positions), and if it falls (buying), it will be closed, and it will be earned: price difference = opening price-closing price.