At present, the opening price, also known as the opening price, refers to the transaction price of the first transaction per share after the opening of the stock exchange every trading day.
However, it should be noted that not all opening prices are based on the first transaction price per share after the opening of each trading day. If you don't buy or sell a certain security within a period of time after the opening of the Shanghai Composite Index, then the closing price of the previous day will be taken as today's opening price.
If a security has not been traded for several days in a row, the on-site intermediary broker of the stock exchange will put forward a guiding price according to the price trend of the securities entrusted by customers, making it the opening price after the securities are traded.
In the intangible trading market, if a security has not been traded for several days in a row, then the closing price of the previous day is still used as its opening price.
Extended data:
Shanghai Composite Index Subscription:
Investors' purchase of Shanghai Stock Exchange Index generally refers to the purchase of stock index futures or index funds, such as the purchase of Shanghai Stock Exchange 50 Index Fund and Shanghai Stock Exchange 180 Index Fund.
Investors need to open another account to buy stock index futures. The conditions for opening an account are as follows:
1. The available funds in the margin financing and securities lending account are not less than 500,000 yuan.
2, with stock index futures related knowledge, knowledge evaluation shall not be less than 80 points.
3. Personal account opening process with at least 10 trading days, more than 20 stock index simulation trading records or more than 10 commodity futures trading records in three years.
The trading principle of stock index futures is similar to that of stock trading, and centralized computer bidding is conducted according to the principle of price priority and time priority. The difference is that stock index futures have two positions: long position and short position, and investors can use stock index futures for short position operation.
You don't necessarily need to open an A-share account to buy a Shanghai Stock Exchange index fund. For example, to buy Huaxia SSE 50ETF, you need to open an A-share account. If you buy ordinary SSE 50 Index Fund and E Fund SSE 50, you don't need to open an A-share account. It is purchased in the same way as other open-end funds.
Calculation of the rise and fall of Shanghai Composite Index:
Shanghai Composite Index is the Shanghai Composite Index, referred to as "Shanghai Composite Index". Its sample shares are all listed on the Shanghai Stock Exchange, including A shares and B shares, reflecting the changes in the prices of listed stocks on the Shanghai Stock Exchange.
The Shanghai Composite Index is a weighted composite stock price index based on the number of shares issued during the reporting period. The calculation formula is: Shanghai Stock Exchange Index =∑(a total market price of stocks in the reporting period ÷ total market price of stocks in the base period) × 100, where total market price = ∑ (market price of A shares × total share capital).
This means that the rise and fall of the Shanghai Composite Index will be affected by the rise and fall and weight of its constituent stocks, that is, the constituent stocks generally rise, and the Shanghai Composite Index may rise; The constituent stocks generally fell, and the rising index may fall; Super-large-cap stocks have great influence on the index, while small-cap stocks have little influence on the index.
At the same time, investors can operate individual stocks according to the Shanghai Composite Index. When the Shanghai Composite Index rises, investors can buy stocks moderately. When the Shanghai Composite Index falls, investors can clear their positions or wait and see.