The significance of the daily mark-to-market system lies in ensuring the safety of deposits. Because with the change of futures price, the rights and interests of buyers and sellers also change, so once one party's margin is insufficient, the holder is not allowed to make up the margin, theoretically, the holder's actual rights and interests may become negative, that is, the futures contract held by the contract holder is not only worthless, but also causes the holder to owe others a part, and such a contract cannot be traded, which fundamentally destroys the foundation of the entire futures market.
In fact, the futures market allows funds to flow from one person to another, and the margin is the minimum guarantee to ensure the continuous flow of funds. If the capital flow is interrupted, on the one hand, the holder's rights and interests are increasing, on the other hand, the holder has not continuously invested funds. So who can make up for this gap? You know, once people who make money earn enough, they can immediately close their positions and take money and leave, so people who lose money must be required to continuously inject funds into the market.
The futures market does not produce any value, that is to say, if there is no continuous flow of funds into the futures market, there will only be less and less money in the market. In this way, normal futures trading cannot be maintained.
Only a few contracts will be kept until the contract expires, and once the contract expires, it will be delivered in kind. For example, if you hold 100 empty soybean bills, you have to transport 1000 tons of soybeans to the warehouse designated by the exchange for delivery when the contract expires, but only some spot enterprises can do this, so it is actually impossible for you to say that the delivery is due.