Refers to a transaction, the opening amount is equal to zero, the closing amount is the current amount, and the position is reduced. The difference is equal to the current amount, indicating that both long and short positions have reduced their positions. The original bulls sell and close positions, and the original bears buy and close positions and reduce positions.

There are many terms for futures. When observing the futures market, we often see the concepts of double opening, double flat, multi-opening, empty opening, multi-flat, empty flat and changing hands in the dynamic position change table. Its meaning is as follows:

1, double opening: at the same price, multiple pants shed heads and short positions are opened at the same time, and the total position is increased.

2. Double liquidation: At the same price, both long positions and short positions are closed at the same time, and the total positions are reduced.

3. Opening positions: Investors who have no positions judge that the market will fall and sell to open positions.

4. Open one more foot: investors who do not hold positions will judge that the market will rise and buy positions.

5. Short position level: investors who originally sold open positions bought and closed positions.

6. Duoping: Investors who originally bought Jiancang sold and closed their positions.

7. Pay more: sell, close and leave the original investors who hold more than one order, and at the same time, new investors buy, open positions and trade at the same price.

8. Empty single exchange: buying, closing and leaving for investors who used to hold the empty single index, while new investors sell, open positions and trade at the same price.