The reason why futures jumped sharply or opened higher was that a few minutes before the opening was call auction time, so many people bought higher, and the opening price of the day's trading was determined according to the principle of maximum transaction.

Futures is a trading method that spans time. By signing a contract, the buyer and the seller agree to deliver a specific amount of spot at a specific time, price and other trading conditions. Usually, futures are concentrated in futures exchanges and traded through standardized contracts, but some futures contracts can be traded through OTC, which is called OTC contracts. According to the types of subject matter, futures can be divided into commodity futures and financial futures. Commodity futures are usually some popular products such as cotton, soybean and oil, while financial futures are generally stocks and bonds. Investors can invest or speculate in futures.

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