9: 0015-9: 25 on the trading day is call auction time. Investors can choose to cancel the order before 9:20, and cannot cancel the order afterwards. However, the opening price of the day generated by call auction is the price that can achieve the maximum transaction. All buy declarations above the transaction price and sell declarations below the transaction price are closed, or at least one buyer or seller with the same price is closed.
The transaction cannot be completed in call auction time. Only after the end of call auction at 9:25 on the trading day will the opening price of the day be generated, and the transaction can only be concluded after the successful match according to this opening price. After the transaction, there is a process of clearing and delivery.
Therefore, the closing time is only the opening time, that is, 9: 30 am-1:30 am and13: 00 pm-15: 00 pm.