It depends on how much the contract costs, such as 3000 yuan, so you have 1 000 yuan as the remaining funds. 20% is 600 yuan, so you have 400 yuan left, and you won't be forced to close your position.

And if the contract is 3,800 yuan, you have 200 yuan as the remaining funds, and the 20% floating in the opposite direction is 4,560 yuan, then you will be forced to close your position without reaching 20%. If you are forced to close your position (say 3,800 yuan), after deducting some handling fees, your remaining funds are 3,800 yuan.