After the stock index futures are bought, the index falls, if there is no additional margin. Will investors be notified before compulsory liquidation? Usually, it takes several hours or days.
According to the regulations, the futures company will notify investors to make up the margin before the market opens on the next trading day, which is an additional margin. If the investor fails to make up the deposit in time, the futures company may implement partial or full compulsory liquidation of the account owner's position until the retained deposit meets the specified requirements.