Futures trading uses a margin system. Traders do not need to pay the full value of the contract, but only need to deposit an initial margin equivalent to a certain proportion of the contract value to open a position.

In addition, futures trading implements a daily mark-to-market settlement system:

The exchange will calculate profits and losses on your positions and transfer funds based on the daily settlement price at the end of each trading day.

If your account equity falls below the required maintenance margin, the futures company will issue a margin call, and you need to replenish funds within the specified time.

Please note that to prevent overnight market risks, futures companies usually charge higher margin requirements for overnight positions.