When the investor's loss rate reaches 90%, when the investor's loss rate reaches 90%, the futures company will inform the investor to add margin, and if the investor does not add margin, it will be forced to close the position by the futures company.

For example, when the target purchased by investors falls by 10%, short investors will achieve a 30% yield under the action of triple leverage. When the subject matter purchased by investors rises by 10%, short investors will lose 30% under the action of triple leverage. When the loss rate of investors reaches 100%, there will be short positions.

Triple shorting refers to investors shorting a target with a leverage ratio of 300%. Triple shorting is common in futures and foreign exchange markets, which enables investors to buy more subject matter with less money, triples investors' returns and triples investors' risks.