The opening price of futures refers to the transaction price generated by call auction within five minutes before the opening of the contract. If there is no price in call auction, the first transaction price of the day shall be the opening price of the day. If there is no transaction on the whole day, the settlement price of yesterday shall be taken as the opening price of the day.

Call auction chose the maximum trading volume criterion, that is, the maximum trading volume can be obtained at this price.

First of all, the trading system arranges all the useful buyer declarations in the order from high to low, and the declarations with the same price are arranged in the order of entering the system; All useful selling declarations are arranged in the order of the declared price from low to high, and those with the same declared price are arranged in the order of entering the system. For more information, please visit Daren.com Futures ... Next, the trading system will gradually match the top buyer's declaration with the selling declaration until the trading can't stop. For the final transaction, the arithmetic average price of the declared price of the buyer and the declared price of the seller shall be the price in call auction, and the price shall be rounded up according to the minimum change price of each futures contract;

Closing price refers to the final transaction price on the day of the contract. If the contract is open all day, the opening price is the closing price of the day.