Open position: create a new (buy or sell) list (contract, position), also known as open position.
Close position: Close the created order (buy or sell).
Buy up: buy first and then sell
Buy down: sell first and then buy.
Such as spot silver:
1, buyout, 3000 yuan per kilogram
Buy (create a new list) and sell it at 3 100 RMB/kg.
At 3000 RMB/kg, that is, opening positions, opening positions;
Selling at 3 100 yuan/kg is liquidation.
2. Buy down, sell at 3,300 RMB/kg (create a new list), and then buy at 3 150 RMB/kg.
Selling at 3300 RMB/kg means opening and closing positions;
Buying at 3 150 RMB/kg means closing the position.