The whole process of futures trading can be summarized as opening positions, holding positions, closing positions or physical delivery. Double opening, multiple opening and empty order will increase the total position, while double opening, multiple opening and empty order will decrease the total position, while multiple opening and empty order will not change the total position.

Double opening: assuming that the transaction is conducted between Party A and Party B, Party A buys 10 lots of corn and Party B sells 10 lots of corn, that is, both parties open positions at the same time and the quantity is equal, which is called double opening.

Multi-position opening: suppose the transaction is conducted among Party A, Party B and Party C, in which Party A buys 10 lots of open corn, Party B sells 5 lots of open corn and Party C sells 5 lots of open corn, and the three transactions are conducted at the same time, which is called multi-position opening, that is, both buyers and sellers open positions and the number of open positions bought is greater than the number of open positions sold.

Open position: suppose the transaction is conducted among Party A, Party B and Party C, in which Party A sells 10 lots of corn open position, Party B buys 5 lots of corn open position and Party C buys 5 lots of corn open position, and the three transactions are carried out at the same time, which is called open position, that is, both buyers and sellers have not opened positions and the number of selling positions is greater than that of buying positions.

Double liquidation: assuming that the transaction is conducted between Party A and Party B, Party A sells 10 lots of corn and Party B buys 10 lots of corn, that is, both parties close their positions at the same time and the quantity is equal, which is called double liquidation.

Duoping: suppose the transaction is conducted among Party A, Party B and Party C, in which Party A sells 10 corn, Party B buys 5 corn and Party C buys 5 corn, and the three transactions are conducted at the same time, which is called Duoping, that is, both buyers and sellers close their positions and the number of positions sold is greater than the number of positions bought.

Empty balance: suppose the transaction is conducted among Party A, Party B and Party C, in which Party A buys 10 lots of corn, Party B sells 5 lots of corn and Party C sells 5 lots of corn, and the three transactions are conducted at the same time, which is called empty balance, that is, the buyers and sellers close their positions, and the number of buying positions is greater than the number of selling positions.

Multi-exchange: assuming that the transaction is conducted between Party A and Party B, Party A sells the closed 10 lot of corn and Party B buys the closed 10 lot of corn, that is, the 10 lot of corn held by Party A is transferred to Party B, which is called multi-exchange.

Short position transaction: assuming that the transaction is conducted between Party A and Party B, Party A buys 65,438+00 lots of corn and Party B sells 65,438+00 lots of corn, that is, the short position of 65,438+00 lots of corn held by Party A is transferred to Party B, which is called short position transaction.