The sharp rise and fall is a sudden behavior in intraday trading, which often causes the stock price to rise and fall by more than 3% in a few minutes. Obviously, retail investors tend to follow suit and will not take the lead in launching the offensive of ups and downs. It is often the deliberate behavior of the main force that leads to this phenomenon.

Stock is a part of the ownership of a joint-stock company and a certificate of ownership issued by a joint-stock company. It is a kind of securities issued by a joint-stock company to all kinds of shareholders, as a shareholding certificate to obtain dividends and bonuses. Stocks are long-term credit instruments in the capital market and can be transferred and traded. With it, shareholders can share the company's profits, but also bear the risks brought by the company's business mistakes. Each share represents the shareholder's ownership of the basic unit of the enterprise. Every listed company will issue shares.

Every stock in the same category represents the equal ownership of the company. The share of ownership of the company owned by each shareholder depends on the proportion of shares held by each shareholder to the total share capital of the company.

Stock is an integral part of the capital of a joint-stock company and can be transferred and traded. It is the main long-term credit tool in the capital market, but the company cannot be required to return its capital contribution.

The trading hours of most stocks are:

The trading time is 4 hours, which is divided into two periods: Monday to Friday from 9: 30 am to 1 1: 30, and in the afternoon from 13: 00 to 15: 00.

From 9: 00 am15 am, investors can place orders, and the entrusted price is limited to10% of the closing price of the previous trading day, that is, between the daily limit and the daily limit. Orders entrusted before 9: 25 am are matched at 9: 25 am, and the price obtained is the so-called "opening price". Orders placed between 9: 25 and 9: 30 were not processed until 9: 30.

If the price you entrust cannot be concluded on the current trading day, you must re-register the order every other trading day.

Rest day: Trading is not allowed on Saturdays, Sundays and rest days announced by Shanghai Stock Exchange. (Generally, it is the national legal holidays such as May 1 International Labor Day, National Day, Spring Festival, New Year's Day, Tomb-Sweeping Day, Dragon Boat Festival and Mid-Autumn Festival).