Short position: refers to the situation that the customer's rights and interests in the investor's margin account are negative under some special circumstances. That is, the loss is greater than the deposit in the customer's account. If short positions lead to losses, and they are caused by investors, investors need to make up for the losses, otherwise they will face legal recourse.

At present, there is basically no short position phenomenon in China, and there is no limit on the rise and fall. When the margin is maintained below, the futures company will automatically close the position. In Hong Kong's Hang Seng Index futures, the Hang Seng Index is a four-hour trading system. The next day, there may be a big gap or gap, which will lead to the reversal of positions, and the position will explode as soon as it opens, or even be negative.

Most short positions are related to improper fund management. In order to avoid this situation, it is necessary to control positions in particular, manage funds reasonably, and avoid possible Man Cang operations in stock trading. And unlike stock trading, investors must track the stock index futures market in time.