The Shanghai Composite Index generally refers to the Shanghai Composite Index, based on 100.
Deep finger: base point 1000 point.
Shanghai Composite Index (SH00000 1)
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The full name of is Shanghai Stock Exchange Stock Price Composite Index, which is a stock index compiled by Shanghai Stock Exchange. It was officially released on February 9 1990+ 19. The sample of the stock index is all the stocks listed on the Shanghai Stock Exchange, and the newly listed stocks are included in the calculation range of the stock index on the second day of listing.
The weight of stock index is the total share capital of listed companies. Because the shares of listed companies in China are divided into tradable shares and non-tradable shares, and their tradable shares are not consistent with the total share capital, the stocks with larger total share capital have a greater impact on the stock index. The Shanghai Composite Index often becomes a tool for large institutions to make the market, which makes the trend of the stock index deviate from the rise and fall of most stocks.
The release of the Shanghai Stock Exchange's stock index is almost synchronized with the changes in the stock market, which is an indispensable reference for China investors and securities practitioners to judge the trend of stock price changes.
The index, formerly known as Shanghai Jing 'an Index, was compiled by Jing 'an Securities Business Department of China Industrial and Commercial Bank Shanghai Branch, 1987 1 1.2. The Shanghai Composite Index was compiled and published by the Shanghai Stock Exchange on July 5th at 199 1, with a base period of 1990, 19 and a base period value of 100. Its calculation formula is:
Today's stock price index = today's total stock market value ÷ basic stock market value × 100.
The specific calculation method is to multiply the stock closing price of the base period and the calculation date (if there is no transaction on that day, the closing price of the previous day will be postponed) by the number of shares issued, and then add them to get the total market value of the base period and the calculation date, and then divide them to get the stock price index. In case of capital increase and share expansion or increase (deletion) of listed stocks, it should be modified accordingly, and its calculation formula is adjusted as follows:
Today's stock price index = today's stock market value/new benchmark stock market value × 100.
In which: total market value of new benchmark stocks = total market value of benchmark stocks before correction × (total market value of stocks before correction+total market value of stocks) ÷ total market value of stocks before correction.
With the gradual enrichment of listed varieties, on the basis of this comprehensive index, the Shanghai Stock Exchange announced the A-share index and the B-share index respectively from February 1992, and officially announced the five major stock price indexes of industry, commerce, real estate, public utilities and integration from May 3 1993.
[Editor] List of Shanghai Stock Exchange Series Indexes
Broadly speaking, there are four types of Shanghai Composite Index, 16, namely
I. Four sample indices
1 .CSI 300
2. SSE 180
3. SSE 50
4. Dividend index
Second, the comprehensive index class 2
1. Shanghai Composite Index
2. New comprehensive index
Three, seven kinds of classification indicators
1. Stock index
2.b-share index
3. Industrial index
4. Business index
5. Real estate index
6. Public index
7. Composite indicators
Four, the other three index categories
1. Fund index
2. Government bond index
3. Corporate bond index
In a narrow sense, it refers to the Shanghai Composite Index. Its sample stocks are all listed stocks, including A shares and B shares, which generally reflect the price changes of listed stocks in Shanghai Stock Exchange. July 199 15 was officially released.
1, "Shanghai Stock Exchange Composite Stock Index", also known as "Shanghai Stock Exchange Composite Stock Index", is a statistical index widely used at home and abroad to reflect the overall trend of Shanghai stock market.
The Shanghai Stock Exchange sorted out the Shanghai Stock Exchange and released it on July 199 1 day. The withdrawal of the Shanghai Stock Exchange is in "points" and the base date is 1990+February19. The benchmark date is 100.
With the continuous development of Shanghai stock market, Shanghai A-share index and Shanghai B-share index were added on February 2 1 and February 2 1992 to reflect the respective trends of different stocks (A-share and B-share). On June 1993 and 1 day, the Shanghai Stock Exchange's sub-indices were added, namely, industrial index, commercial index, real estate index, public utility index and comprehensive industry index, to reflect the respective trends of stocks in different industries.
So far, the Shanghai Stock Exchange Index has developed into a series of stock price indexes including comprehensive stock price index, A-share index, B-share index and sub-index.
2. Calculation formula
The Shanghai Composite Index is a weighted composite stock price index based on the number of shares issued during the reporting period and calculated by licensing formula.
Index of reporting period = (total market value of sampled stocks in reporting period/total market value of sampled stocks on benchmark date) × 100.
Total market value = ∑ (market price × number of shares issued)
Among them, the total market value of sampled stocks on the base date is also called divisor.
3, the correction method
When the total market value changes due to non-trading factors, the original fixed divisor is corrected by "divisor correction method" to maintain the continuity of the index. The correction formula is as follows:
The total market value of sample stocks before correction/original divisor = the total market value of sample stocks after correction/corrected divisor, so as to obtain the continuity after correction and calculate the future index accordingly.
When the stock pays dividends, the index will not be revised and let it fall naturally.
According to the actual situation of Shanghai stock market, it must be amended in any of the following circumstances:
( 1)IPO；
(2) delisting of stocks;
(3) Changes in the amount of share capital (allotment, allotment, capital reduction, etc.). );
(4) Equity withdrawal (not included in the index for the time being) and equity recovery (re-included in the index)
(5) Exchange rate changes
Listing of new shares: the new shares will be included in the index on the second day of listing, that is, they will not be included in the index on the same day, but the index will be revised after the close of the day. The correction method is as follows:
Total market value of the day/original divisor = total market value of the day+number of new shares issued × closing price of the day/revised divisor.
Ex-dividend: modify the index before the opening of ex-dividend trading day;
Total market value of the previous day/original divisor = [total market value of the previous day+number of ex-dividend shares issued × (ex-dividend quotation-closing price of the previous day)]/revised divisor
Withdrawal of rights: on the benchmark date of the transfer of shares except rights, the shares are excluded from the index sample shares;
Reinstatement: the revoked shares will be included in the index calculation from the eleventh trading day after listing and circulation.
4, the release of the index
At present, the Shanghai Composite Index is calculated in real time one by one, that is, the index is recalculated every time there is a new transaction, and the calculated sample stock price (X) is determined according to the following principles:
(1) If there is no transaction on that day, X= closing price of the previous day.
(2) If there is a transaction on that day, X= the latest transaction price.
The Shanghai Composite Index is widely released to domestic and foreign markets in various ways every day.
Shenzhen index
Open classification: stock, finance, terminology, finance, stock market.
I. Introduction
Shenzhen Stock Exchange Index refers to the stock price index compiled by Shenzhen Stock Exchange. The calculation method of this stock index is basically the same as that of the Shanghai Stock Exchange. Its sample is all the stocks listed on Shenzhen Stock Exchange, and the weight is the total share capital of the stocks. As all listed companies are taken as samples, its representativeness is very extensive, and it is released simultaneously with Shenzhen Stock Exchange, which is a necessary reference for investors and securities practitioners to judge the trend of stock price changes in Shenzhen Stock Exchange.
At present, there are two stock indexes in Shenzhen Stock Exchange, one is the old index-Shenzhen Composite Index, and the other is the current Shenzhen Component Index, but the difference between the two indexes is not particularly obvious from the operation situation.
Second, the content
1, index type
The stock indexes of Shenzhen Stock Exchange are:
(1) Comprehensive index: Shenzhen Composite Index, Shenzhen A-share Index and Shenzhen B-share Index.
(2) constituent stock indexes: including Shenzhen constituent stock index, A-share constituent stock index, B-share constituent stock index, industrial index, business index, financial index, real estate index, public utility index and comprehensive enterprise index.
(3) Shenzhen Stock Exchange Fund Index
2. Base date and base date index
(1) The Shenzhen Composite Index was released on April 3rd. 199 1. The benchmark index is 100.
(2) The Shenzhen A-share index was released on April 3rd, 199 1. The benchmark index is set to 100.
(3) Shenzhen B-share index is based on February 28th 1992, and released on February 6th 1992. The benchmark index is set to 100.
(4) The base date of component index is1July 20th, 994, and the release date is1June 23rd, 995. The benchmark index is set to 1000.
(5) The fund index of Shenzhen Stock Exchange was released on July 3, 2000, with June 30, 2000 as the base date. The benchmark index is set to 1000.
3. Calculation range
(1) The stocks included in the index calculation range are called index stocks.
(2) Index stocks of composite index refer to all stocks listed on Shenzhen Stock Exchange. All stocks are used to calculate the Shenzhen Composite Index, among which A shares are used to calculate the Shenzhen A-share index; B shares are used to calculate the Shenzhen B share index.
(3) Index stocks of constituent stock index (i.e. constituent stocks) are 40 stocks selected from listed companies. Among the constituent stocks, both A shares and B shares are used to calculate the Shenzhen Stock Exchange Index, in which A shares are used to calculate the constituent A shares index and B shares are used to calculate the constituent B shares index. Component stocks are classified by industry, and their A shares are used to calculate the industry classification index.
4. Calculation method
(1) Both the composite index and the constituent stock index are Paige weighted price indexes, that is, the number of shares on the index stock calculation date is used as the weight for weighted calculation.
(2) The weights of the two types of indices are:
Comprehensive index category: number of shares = total share capital of all listed companies.
Component stock index category: number of shares = number of circulating share capital of component shares.
(3) The index calculation formula is
Today's index = (total market value of today's index stocks/total market value of benchmark index stocks) × benchmark index.
(4) B shares in the index stocks will be converted into RMB at the average exchange rate adjusted by foreign exchange last week, which will be used to calculate the Shenzhen Composite Index and Shenzhen Component Index. Shenzhen B-share index and component B-share index are still calculated in Hong Kong dollars.
(5) After the end of call auction on each trading day, calculate the opening index based on the opening price of stocks generated by call auction (if there is no transaction, take yesterday's closing price), and then calculate the real-time index in a chain way until the close.
Calculation formula of daily chain ratio:
Today's real-time index = closing index of the previous day × (total market value of today's real-time index stocks/adjusted total market value of the previous day's index stocks)
Total market value of index stocks = total market value of index stocks A shares+total market value of index stocks B shares.
Total market value of index A shares = ∑ (share price of index A shares × number of index A shares).
Total market value of index B shares = ∑ (share price of index B shares × number of index B shares) × average exchange rate of foreign exchange adjustment last week.
(6) The fund index is calculated in the same way as the constituent stock index, with the number of new fund shares directly listed on the Shenzhen Stock Exchange (that is, the number of circulating fund shares) as the weight.