1, because the changing direction of the market is opposite to your position, and you are in Man Cang, there will be a little loss, that is, the margin is insufficient.

2. The exchange or futures company has increased the margin ratio. In this case, even if the situation remains unchanged, Man Cang will not have enough difference.

When the available funds are negative, the futures company will ask the traders for additional funds. If you don't add, the futures company may force some of your positions at any time until the available funds are greater than zero.