Double opening: Suppose A wants to buy 10 contract soybeans and B wants to sell 10 contract soybeans, then these two contracts are just clinched. When two positions are opened at the same time, and the variety and quantity of trading contracts are the same, it is called double opening. Double opening means that two positions are opened at the same time, so add positions.

Open more: If A wants to buy 12 lots of soybeans, but B still sells 10 lots. Then Party A and Party B can only trade 10 lots, but Party A still needs to buy the remaining 2 lots. At this time, someone needs to sell 2 lots. So let's assume that C just sold 2 positions at this time. Note that these two lots are used to close positions, so the three parties just made a deal. Of course, the three-way transaction is completed at the same time. In this way, of the 12 soybean contracts held by Party A, 10 was sold to Party B for opening positions, and the other two were sold to Party C for closing positions. The trading behavior of Party A, Party B and Party C is called long position opening.

Short position: short position means that the number of open positions sold is greater than the number of open positions bought. ?

Empty flat: short positions are actively closed.

Duoping: Long positions take the initiative to close positions.

Extended data:

The compulsory liquidation system of futures refers to the compulsory liquidation system implemented by the exchange to prevent further risk expansion when the trading margin of members or customers is insufficient and not replenished within the specified time, or when the positions of members or customers exceed the specified limit, or when members or customers violate the rules. Simply put, it is a compulsory measure for the exchange to close the position of the violator.

References:

Baidu Encyclopedia: Futures