The opening price, also known as the opening price, refers to the first transaction price per share of a certain security after the market opens on the stock exchange on each trading day. Most stock exchanges in the world use the principle of maximum turnover to determine the opening price. If there is no sale or transaction of a certain security within a period of time (usually half an hour) after the market opens, the closing price of the previous day will be used as the opening price of the security on that day.

The closing price refers to the closing price of the Shanghai stock market, which is the volume-weighted average price of all transactions one minute before the last transaction of the security on that day (including the last transaction). If there is no transaction on the day, the previous closing price shall be the closing price of the day.

In stock trading, stocks are traded based on the principles of time priority and price priority. So, who is the "price priority" when the exchange first opens every morning? In fact, the matching method of the exchange's computer host in the morning is different from usual times. Usually it is called continuous bidding, but in the morning it is called call bidding. Every morning from 9:15-9:25 is the collective bidding time. Extended information

Generation principles

The opening price of the futures market is generated through collective bidding, and the generation principle of collective bidding is different from the price transaction principle in normal transactions. Therefore, in individual cases In this case, the declared buying price is higher than the opening price or the declared selling price is lower than the opening price and the transaction cannot be completed.

The opening price is a call auction. Its generation principle is: a certain stock is sent by both buyers and sellers to the Shenzhen and Shanghai stock markets between 9:00 and 9:25. The order prices of the buyers and sellers are consistent. stock price, but it is worth explaining that the "consistent stock price" refers to the "consistent stock price" that can match the largest amount in a single transaction. It is not necessarily the highest price at which the entrustment price of the buyer and seller is consistent. The "call auction" generated between 9:00 and 9:25 does not implement the "time priority" principle that is implemented when the order prices are consistent in the "continuous auction" after 9:30.

Baidu Encyclopedia - Closing Price