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What do you mean by double opening and double class futures?
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. The meaning is as follows: double opening: at the same price, long and short positions are opened at the same time, and the total position is increased by double flat; At the same price, long and short positions are closed at the same time, and short positions reduce the total position: investors without positions open positions. And sell more open positions: investors who have no positions judge the market to rise, but buy short positions: investors who have sold open positions buy and close positions; Investors who have bought and opened positions, sold and closed positions; Investors who hold multiple orders, sell and close positions, new investors buy and open positions, and short positions are traded at the same price; Investors who have held empty orders buy positions and leave.