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What is the relationship between yesterday's futures settlement and the opening price?
Yesterday's settlement is yesterday's weighted average price = (σ price * current trading volume)/total trading volume.

The opening price was obtained through call auction. According to psychological or market expectations, place an order before opening.

(call auction) refers to the process that every trading day at 9: 0015-9: 25 am, investors can freely declare buying and selling according to their acceptable psychological price, and the computer trading host system conducts centralized matching of all valid commissions. )

Opening price-yesterday's settlement = up and down