Being a futures retail investor can lock positions. Locking generally refers to an operation method in which futures traders open positions with the same amount but in opposite directions, so that the profit and loss of positions will not increase or decrease no matter where the futures price changes (or rises or falls).

Futures term, also commonly used in foreign exchange margin trading and gold margin trading, generally refers to investors opening a new position opposite to the original position after buying and selling contracts, also known as locking in, locking out, and even euphemistically called butterfly Qi Fei. Locking is generally divided into two ways, namely profit locking and loss locking.