What is the reason for the stock crash?

There are mainly the following points:

1 There is significant bad news in stocks: In stock investment, the release of bad news from stocks will cause most retail investors to sell their stocks, which will lead to a sharp drop in stock prices. Bad news often leads to a general decline in the stock market. For example, the deterioration of listed companies' performance, bank tightening, rising bank interest rates, economic recession and inflation are all bad news.

2. Large market or market conditions: When the market environment fluctuates greatly, it will cause the stock price of individual stocks to fall. For example, the overall decline in the market will inevitably lead to a decline in individual stock prices.

3 main shipment: in order to ship, the dealer distributes the stocks in his hand, or smashes them in large orders, thus lowering the stock price. This situation is often that the main force will buy a lot after depressing the stock price, thus raising the stock price to earn the difference.

4 changes in investor information: changes in investor information will also cause changes in stock prices. For example, if the stock rises to a certain extent, investors think that the price is too high and the risk increases. In this case, the seller will be strengthened, the buyer will be weakened and the stock will fall.

The trading hours of the stock market are from 9: 30 to 1 1: 30 every Monday to Friday, and from 13: 00 to 15: 00 in the afternoon. Trading is not allowed on Saturdays, Sundays and rest days announced by Shanghai Stock Exchange and Shenzhen Stock Exchange.

Shanghai and Shenzhen stock markets

Trading day: Monday to Friday (except legal holidays)

9: 15 —— 9: 25 call auction

Before 9: 30- 1 1: 30, bid continuously.

After 13: 00- 15: 00, bid continuously.

(call auction will finish at 14: 57- 15: 00).

The trading time of block trades is 15:00- 15:30 on the trading day of this exchange, and this exchange accepts the declaration of block trades within the above time.

Users of bulk transactions can log on to the electronic system of the Exchange at 14: 30- 15: 00 on the trading day to make preparations before the start; Block trading user

You can inquire about the current day's bulk trading or receive the current day's trading data through the electronic system of bulk trading of this exchange at 15: 30- 16: 00 on the trading day.

China Hong Kong stock

Monday to Friday: 9: 30am-12: 00pm, and13: 00pm-16: 00pm.

Closed on Saturdays, Sundays and public holidays in Hong Kong.

Rules of the Hong Kong Stock Exchange:

1. The actual delivery time is the second working day after the trading day (t+2); Before T+2 days, customers can't withdraw cash, physical stocks and transfer custody of purchased stocks.

2. Hong Kong stocks can be traded in a T+0 cycle.

Time in the United States

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Summer time is 2 1:30-4: 00.

Winter begins at 22:30 and ends at 5: 00.

The United States closed in China on Friday morning, and the US stock market opened on Monday night in China. At the same time, when the US stock market opened, the west coast of the United States had just entered the early hours.

European time

Daylight saving time is 15:00 -23:30.

Winter/kloc-opens at 0/6: 00 and closes at 0: 30.

Wellington, New Zealand 4: 00- 13: 00

5: 00- 14: 00 in Sydney, Australia

7: 00- 15: 00 Tokyo, Japan

Frankfurt, Germany 15: 00-0: 00

London, UK 16: 00- 1: 00

1 has certain market liquidity, but it mainly depends on the trading volume of the day (the trading volume depends on the psychological expectations of investors).

The stock market is only open from 9: 30 a.m. to 4: 00 p.m. new york time (3: 00 p.m. China market), with limited off-exchange trading after the market closes.

For ordinary investors, the cost and commission are not too high.

4 Short selling stocks is limited by policies (need to start margin trading) and funds (about 500,000 yuan), and many traders are frustrated.

5 there are many steps to complete the transaction, which increases the execution errors and mistakes.