Double opening of futures refers to new long positions and new short positions in the futures market. Opening a position means that a trader newly buys or sells a certain number of futures contracts. In futures trading, if one party wants to buy, it must correspond to the other party's desire to sell.

Suppose A wants to buy 10 soybean contract, and B only wants to sell 10 soybean contract, then they just have a deal. 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.

Extended data:

Futures are different from stocks, and the trading volume of domestic futures is calculated bilaterally, so the trading volume includes both buying and selling, which is twice that of unilateral calculation. Every transaction is accompanied by an increase in trading volume, but there may be three situations: increasing positions, keeping positions unchanged and reducing positions.

If in a transaction, both open positions and open positions are equal to half of the current positions, and the positions remain unchanged, it means that the long positions and short positions have not changed, but some positions have been transferred between long positions and short positions. Combined with the state of internal and external markets, we define the state of transactions as changing hands when the external market is set, and changing hands when the internal market is set.

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