Because the position is not well controlled, margin trading must control the position.

When the market conditions undergo major changes, if most of the funds in the investor's margin account are occupied by trading margin, and the trading direction is opposite to the market trend, due to the leverage effect of margin trading, It's easy to get liquidated. If the liquidation results in a shortfall and it is caused by the investor, the investor needs to make up the shortfall, otherwise he will face legal recourse.

Liquidation is mostly related to improper fund management. In order to avoid this situation from happening, it is necessary to specifically control the position and manage funds reasonably, and avoid full position operations like those that may occur in stock trading; and unlike stock trading, investors must track the market trends of stock index futures in a timely manner. Therefore, stock index futures are not actually suitable for all investors.