Lock position refers to the investment term, which is usually used for spot trading, foreign exchange margin trading and futures margin trading. Lock positions generally refer to investors opening new positions that are opposite to the original positions after buying and selling contracts. It is also called lock positions, lock orders, and even euphemistically called Butterfly Qi Fei. Locking is generally divided into two ways, namely profit locking and loss locking. The so-called lock position generally refers to an operation method in which investors open positions with the same amount but in the opposite direction, so that the profit and loss of positions will not increase or decrease no matter where the price changes.

In fact, the so-called locked position is another term, called hedging transaction. For beginners who use the leverage of the foreign exchange market to conduct foreign exchange transactions, the most fundamental reason for locking positions is that they don't want to lose too many positions, so they open another position in the opposite direction of the original position, which is locking positions.