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The full name of "Shanghai Stock Exchange Index" is "Shanghai Stock Exchange Composite Stock Price Index", which is a statistical indicator commonly used at home and abroad to reflect the overall trend of the Shanghai stock market.

The Shanghai Stock Exchange Index was compiled by the Shanghai Stock Exchange and was publicly released on July 15, 1991. The Shanghai Stock Exchange Index is quoted in "points" and the base date is December 19, 1990. The base day withdrawal is set at 100 points.

With the continuous development of the Shanghai stock market, on February 21, 1992, the SSE A-share index and the SSE B-share index were added to reflect the respective trends of different stocks (A shares and B shares). On June 1, 1993, SSE 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 Composite Index has developed into a series of stock price indexes including the comprehensive stock price index, A-share index, B-share index, and category index.

"Shenzhen Component Index" is the "Shenzhen Stock Exchange Component Index". It is a component stock index compiled by the Shenzhen Stock Exchange. It extracts 40 market representative stocks from all listed stocks. The weighted stock price index is calculated by taking the stocks of listed companies as the calculation object and using the circulating shares as the weight. It comprehensively reflects the stock price trends of A and B shares listed on the Shenzhen Stock Exchange.

Calculation method of the Shenzhen Component Index: Select the stocks of 40 market representative listed companies from all the stocks listed on the Shenzhen Stock Exchange as samples, use the circulating share capital as the weight, and use the weighted average According to the calculation method, July 20, 1994 is used as the base day, and the base day index is set at 1,000 points.