Generally speaking, when the position risk of futures is higher than 100% or the margin is lower than the minimum standard, investors need to add margin. If they don't add margin, they will be forced to close their positions, so they will not close their positions according to losses. For example, the margin rate of long and short positions of SSE 50 stock index futures is 10%, and the margin rate of CSI 500 long and short positions is 15%. If investors buy SSE 50 stock index futures, the margin below 10% will be closed.

In other words, the margin of each product is different, so it depends on the margin. When it is lower than the margin, if the low risk exceeds 100,%, it will be forced to close the position. For example, if you buy a deposit of 9000 yuan for 1 hand of silver, when you lose 1000 yuan, the account risk will reach 100%. At this time, you need to add margin or close your position yourself. Generally, when the position is risky and needs to be closed, the risk control of the futures company will call the investor.