Because futures are leveraged, that is, 100w corn, you only need to take 20w to operate. At this time, there will be a risk that the interest of 100w may lose 30w. At this time, you owe the futures company 10w.
Futures companies will have corresponding risk control to prevent this from happening. Generally, when the loss reaches 18~ 19w, the futures company will force the liquidation. The above situation occurs in the case of continuous daily limit or daily limit.
Lever is a double-edged sword. If you make good use of this lever, you can use your own funds more effectively and get the maximum benefit.