In futures trading, opening a position refers to the behavior of investors buying or selling a futures contract. Short position refers to the state that investors sell a futures contract but have not bought it back. Short position can be understood as that investors are bearish on the sale of the futures contract, that is, they expect the contract price to fall, thus earning the difference income.

One thing to note about short positions in futures is that once investors establish short positions, if the price of futures contracts rises, there will be losses. At this point, investors need to close their positions in time, that is, end short positions by buying contracts to achieve profits or reduce losses.

In futures trading, investors can use a variety of methods to hedge short positions, for example, using appropriate futures varieties to hedge, using derivatives such as options to hedge. These operations require investors to have certain professional knowledge and market judgment ability, balance the relationship between risk and income, and thus improve the success rate of short position operation.