When a futures contract is closed, it is necessary to buy the contract that has been sold. This is a sign of shorting, which investors usually do when they are bearish. Can be understood by the following examples:

65438+ 10 month/day, futures contract 1 0 yuan. Investor a thinks it will fall in the next month, so he opens a short position and sells a contract. In February 1, the futures contract fell to 5 yuan. If investor A wants to close his position, he must buy a futures contract to offset 65438+1October 65438. Get the profit of 5 yuan (10-5).

Short selling means that you don't have it in your hand, but you can sell it before buying it. This is different from the sales of general goods in our life. To understand shorting is to understand the liquidation in the problem.