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.

The analyst of silver futures account of Hengrui Fortune Network pointed out that there are two situations in which silver futures break out. One case is that futures customers still owe money to the futures exchange after closing their positions, that is, the floating profit and loss of the account is ≥ the total amount of funds in the account, that is, the customer's equity is ≤0.

Due to the rapid changes in the market, the deposit in the account can no longer maintain the original contract before the investor adds the deposit. This kind of margin "zeroing" caused by forced liquidation due to insufficient margin is commonly known as "short position", and the meaning of "short position" is the same as "short position".