This is the result of collective bidding.

The closing price is not the opening price of the next day. There will be a call auction between 9.15-9.25 the next day to determine the opening price of the target. The opening price refers to the transaction price generated by call auction within five minutes before the market opening of a certain futures contract.

If the call auction does not produce a transaction price, the first transaction price after the call auction will be the opening price. The listing base price of newly listed contracts is determined by the exchange.

The trading average of the stock at this time determines the opening price. It is also affected by the news of the day and may open higher or lower, so it will not be the same as the previous day's price.

Extended information:

The effective bidding range of the Shenzhen Stock Exchange call auction:

The effective bidding range of the opening call auction on the first day of listing is within 900% of the issue price , the effective bidding range of continuous bidding and closing call bidding is 10% above and below the latest transaction price.

The effective bidding range for the opening call auction on the first day of bond listing is 30% plus or minus 30% of the issue price, and the effective bidding range for continuous bidding and closing call auction is 10% plus or minus 10% of the latest transaction price.

The effective bidding range for the opening call auction on the first day of non-listing is 10% plus or minus 10% of the previous closing price, and the effective bidding range for continuous bidding and closing call auction is 10% plus or minus 10% of the latest transaction price.

The effective bidding range of the bond pledged repurchase non-listing opening call auction on the first day of listing is 100% of the previous closing price, and the effective bidding range of the continuous bidding and closing call auction is 100% of the latest transaction price. .

Baidu Encyclopedia—Collective Bidding