Futures adopt the system of margin trading, so it has certain leverage, so the risk is much greater than that of stocks. In this case, many investors will limit the risk of futures by locking positions, so how to lock positions specifically? How to operate futures lock positions? There are two basic ideas for locking warehouses, one is that the quantity is different and the price is different, and the other is that the price is different and the quantity is the same. 1. Investors pay and sell orders with prices, but the quantity is different. For example, if the number of a locked smaller party is 80% of the larger one, it means that the risk of a larger position is limited by 80%. 2. Investors buy and sell orders at different prices, but the quantity is the same. For example, Zhang San made more orders when the price of a futures contract was 20, and short orders when the price was 2 1. No matter how the market changes, as long as two positions are closed at the same time, the profit and loss are 1. In fact, it is not necessary to strictly follow the above in the locking operation, and different quantities can be set at different prices. At present, China's futures exchanges have different levels of margin concessions for warehouse locking operations, which is very reasonable.