Stock trading is about buying and selling stocks. The core content of stock trading is to obtain profits through the stock price difference between buying and selling in the securities market. The rise and fall of the stock price changes according to the fluctuation of the market. The reason why the fluctuation of the stock price often shows differentiated characteristics stems from the concern of funds, and the relationship between them is like the relationship between water and ships. When the water overflows, the ship will be high (the stock price will rise when the capital flows in), and when the water is exhausted, the ship will be shallow (the stock price will fall when the capital flows out). Stock trading is risky, so you need to be cautious when entering the market. Extended information

As a shareholder, you can't directly enter the stock exchange to buy and sell stocks, but only through the members of the stock exchange, and the so-called members of the stock exchange are the usual securities operating institutions, that is, brokers. You can give orders to brokers to buy or sell stocks, which is called entrustment.

when entrusting, you must rely on the transaction password or securities account. What needs to be pointed out here is that the legal entrustment in China's securities trading is the price limit entrustment that is effective on the same day.

this means that the entrustment instruction issued by shareholders to securities firms must specify: ① shareholder name ② fund card number ③ buying (or selling) ④ Shanghai (or Shenzhen) ⑥ stock name ⑥ stock code ⑧ entrustment price ⑧ entrustment quantity. And this entrustment is only valid on the day when the entrustment is issued. The abbreviation of a stock is usually four to three Chinese characters, and the code of the stock is six digits. The code and abbreviation of the stock must be consistent when it is entrusted for sale.

Reference: Baidu Encyclopedia-Stock Trading