Futures trading margin often changes as the price date approaches, ensuring the reduction of default events, or changes in the external market of holidays may affect the daily market after the holiday, and there may be a big gap, so as to prevent capital risks.

Generally, the margin is raised on the day before the holiday, because it is impossible to trade during the holiday, and many futures products are also docked with the external market. In order to reduce the impact of drastic fluctuations in the external market on investors after the opening of the market, the margin is generally raised before the holiday and adjusted according to the situation after the holiday.