Closing position refers to the behavior of futures investors to buy or sell stock index futures contracts with the same variety and quantity, the same delivery month but opposite trading direction, and close the stock index futures trading.
The position held after selling the stock index futures contract is called short position, referred to as short position. Investors holding long positions think that the price of stock index futures contracts will rise, so they will buy; On the contrary, investors who hold short positions think that the price of stock index futures contracts will fall, so they sell them.