Just like stocks. For example, if you open multiple positions, you can simply buy stock index futures at a certain price. At the same time, there must be another investor who opened a short position, that is, sold it. Otherwise, we can't make a deal. If there is a small increase in the future, of course, in theory, you will make a loss. If you all hold positions, you are all floating profits and losses. If you close your position, you will make a profit. When you close your position, you transfer your long position to the next buyer. So, you should understand.