In finance, hedging refers to an investment that deliberately reduces the risk of another investment. This is a way to reduce business risks while still making profits from investment. General hedging is to conduct two transactions at the same time, both related to the market, in the opposite direction, with the same amount and breakeven. Market correlation refers to the identity of market supply and demand that affects the prices of two commodities. If the relationship between supply and demand changes, it will affect the prices of two commodities at the same time, and the prices will change in the same direction. The opposite direction means that the buying and selling directions of two transactions are opposite, so that no matter which direction the price changes, there is always a profit and a loss. Of course, in order to protect the capital, the number of two transactions must be determined according to the range of their respective price changes, so that the number is roughly the same.

Hedging is the most common in the foreign exchange market, focusing on avoiding the risk of one-way trading. The so-called single-line trading means buying short positions (or short positions) when you are optimistic about a certain currency, and selling short positions (short positions) when you are bearish on a certain currency. If the judgment is correct, the profit will naturally be more; But if the judgment is wrong, the loss will be great [1].

The so-called hedging is to buy a foreign currency at the same time and short it. Besides, we should also sell another currency, that is, short selling. In theory, shorting a currency and shorting a currency should be the same as the silver code, which is the real hedging, otherwise the hedging function cannot be realized if the two sides are different in size.

The so-called hedging settlement means that after traders open their positions in the futures market, they mostly end their transactions through hedging instead of delivery (that is, spot settlement). After buying and opening a position, you can cancel your obligation by selling the same futures contract; After selling and opening a position, you can cancel the performance responsibility by buying the same futures contract. Hedging makes it unnecessary for investors to close futures trading through delivery, thus improving the liquidity of futures market.