If you want to make money after buying a stock, that stock must go up. How much money you can earn depends on how much your share price rose when you sold it. Many investors don't understand this for the first time. Price increase = current price-closing price of the previous trading day/closing price of the previous trading day *100%; The formula for calculating the increase after stock purchase is: increase = current price-bid price/bid price * 100%.

The maximum limit of stock fluctuation on each trading day is 10%, and the entrustment exceeding the limit is invalid. The fluctuation range of ST shares is 5%, the fluctuation range of new shares on the first day of listing is 44%, and the fluctuation range of other special reserves is calculated separately. Fluctuation range = current price-yesterday's closing price/yesterday's closing price * 100%, and the calculated value is positive and negative. The fluctuation range is also called fluctuation range, which originally refers to the percentage of commodity fluctuation compared with the previous trading day. Now it generally refers to the percentage of stocks and futures in the stock market and futures market.

Compared with the previous trading day, the futures market has different color performances in different countries. Western countries usually use green for rising and red for falling. In China, red stands for rising and green stands for falling. After the resumption of trading, there are restrictions on the rise and fall of stocks, but there are no restrictions on prices. Some major asset restructuring stocks rose and fell after the resumption of trading, and the stock price stabilized from the decline, breaking through the 30-day moving average, confirming that it was easy to buy after the first and second delisting. Be careful of the third time. When the stock resumes trading, the opening price of the stock will be higher and lower, and it will be withdrawn again at the top of the average price line. This is a buying point.

For companies with mixed stock prices, additional shares or equity incentives will be issued at the same time. For a company with long-term stable stock price, there must be a large number of subscribers. For a company, if a company's share price rises or falls, it will simultaneously issue additional shares or equity incentives. Due to the long-term decline in share prices, there may be fewer subscribers. Listed companies with stable stock prices have a good reputation and many people will buy them; However, if the company's share price is unstable, only protected retail investors will trade all the year round, and there is no institution at all, which will seriously lead to delisting.