There are two situations in which spot crude oil bursts. One case is that futures customers still owe money to the futures exchange after closing their positions, that is, the floating gain 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".