A higher opening means that the opening price is higher than the closing price of the previous trading day.

Low opening means that the opening price is lower than the closing price of the previous trading day.

Since the stock market opened at 9: 30 and the bidding started at 9: 00, the trading volume was relatively large at the opening. In fact, it only gathered 15 minutes of trading volume at the opening.

Why the stock market has the rule of high opening and low going;

1. High opening: The opening price of the stock on the current day is higher than the closing price of the previous trading day.

Open high unprepared.

The opening price often determines the one-day trend of the stock, which has always been the focus of investors' attention. Many stocks make a fuss about the opening price, hoping to guide investors to develop in a direction that is beneficial to them. There are many forms of openings, the most striking of which is the obvious high opening.

Second, three situations of high opening: 1, continuing the trend of the previous trading day; 2. Good news of the whole or specific stocks appeared before the opening of the day; 3. hype.

Third, low opening: generally refers to the financial trading market, where the opening price index of the market on the current day is lower than the closing price index of the previous day, or the opening price of a trading product in the market is lower than the closing price of the previous trading day.

Fourth, three cases of low opening: 1, continuing the trend of the previous trading day; 2. Bad news about the overall situation or specific stocks appeared before the opening of the day; 3. hype.