What do you mean by shorting?
Short selling refers to the phenomenon that when shorting stocks or futures, brokers are forced to close their positions because the market fluctuation is too large and the margin cannot deduct the losses. Short-selling profits from falling asset prices. Shorting stocks and futures requires a certain margin. The theoretical margin is 10% of the actual position value, which means that the actual reverse fluctuation that investors can bear is only 10%.
In terms of stocks, short selling is realized by borrowing stocks through securities lending and then selling them, and then buying and returning the stocks after the stock price falls, while futures are directly short positions.
In short, both stocks and futures are debt-free settlement, so when the market is unfavorable, the principal loss cannot be "held in debt" after completion, and then it will be forced to close the position.