Hedging means that one investment 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.

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.

This is because the world foreign exchange market is based on US dollars. All foreign currencies rise and fall with the US dollar as the relative exchange rate. A strong dollar means a weak foreign currency; If the foreign currency is strong, the dollar will be weak. The rise and fall of the dollar affects the rise and fall of all foreign currencies. Therefore, if you are optimistic about a currency, but want to reduce the risk, you need to sell a bearish currency at the same time. Buy strong currency and sell weak currency. If the estimate is correct, the dollar will weaken and the strong currency bought will rise. Even if the estimate is wrong and the dollar is strong, the currency bought will not fall too much. The weak currency sold has fallen sharply, with less losses and more gains, and it can still be profitable on the whole.