Details are as follows:
It is expected that the price of investment products will fall; Investors sell contracts as short positions.
A short futures position is a short seller, that is, an agreement to sell the subject matter stipulated in a futures contract in a certain period in the future, which can be a specific commodity or stock. The short seller didn't have the subject matter at that time, but he thought the price of the subject matter would fall in the future. If his judgment is correct, when executing the futures contract, he can buy the subject matter from the market at a price lower than the contract price when shorting, and transfer it to the bulls to earn the difference.