The full name of "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.

calculation of index of Shanghai stock exchange series

Shanghai stock exchange index series all take "point" as the unit.

base date, base period and base period index

base period is also called divisor

SSE 18 index is a continuation of SSE 3 index officially released on July 1, 1996, and its base point is the closing index of SSE 3 index on June 28, 22, which was officially released on July 1, 22.

the base date of SSE 5 index is December 31st, 23, and the adjusted market value of 5 constituent stocks on that date is the base period, and the base period index is set at 1 points, which has been officially released since January 2nd, 24.

the base date of Shanghai stock exchange dividend index is December 31st, 24, and the adjusted market value of all sample stocks on that date is the base period. The base period index is set at 1, points, and it has been officially released since January 4th, 25.

The base date of the Shanghai Composite Index is December 19th, 199, and the base period is the total market value of all stocks on that date. The base period index is set at 1 points, and it has been officially released since July 15th, 1991.

The new Shanghai Composite Index is based on December 3, 25, with the total market value of all sample stocks on that date as the base period, with a basis point of 1, points, which was officially released on the first trading day of 26.

The A-share index of Shanghai Stock Exchange is based on December 19th, 199 and the total market value of all A-shares on that day. The base index is set at 1 points, which was officially released on February 21st, 1992.

The B-share index of Shanghai Stock Exchange is based on February 21st, 1992, with the total market value of all B-shares on that day as the base period, and the base period index is set at 1 points, which has been officially released since August 17th, 1992.

The base date of the sub-index is April 3th, 1993, and the base period is the total market value of all stocks in the corresponding industry category on that date. The base period index is uniformly set at 1358.78 points (the closing value of the Shanghai Composite Index on April 3th, 1993), which has been officially released since June 1st, 1993.

The Shanghai Stock Exchange Fund Index is based on May 8, 2 and the total market value of all securities investment funds on that date, with a base date of 1, points, which was officially released on June 9, 2.

2. Calculation formula

The Shanghai Composite Index Series adopts the licensed weighted comprehensive price index formula

The Shanghai Composite Index 18

The Shanghai Composite Index is weighted by the adjusted share capital of the constituent stocks, and the calculation formula is:

Index in the reporting period = adjusted market value of the constituent stocks in the reporting period/adjusted market value of the constituent stocks on the base date × 1

, where According to the international practice and the opinions of the expert committee, the grading methods of Shanghai Stock Exchange component index are shown in the following table. For example, if the proportion of tradable shares (circulating share capital/total share capital) of a stock is 7% and less than 1%, the circulating share capital is used as the weight; The proportion of a stock in circulation is 35%, which falls within the interval (3, 4), and the corresponding weighted proportion is 4%, so 4% of the total share capital is taken as the weight.

the circulation ratio (%) ≤ 1 (1,2) (2,3) (3,4) (4,5) (5,6) (6,7) (7,8) > 8

weighted proportion (%) circulation proportion 2 3 4 5 6 7 8 1

SSE 5 index

SSE 5 index adopts the permitted weighting method, and is weighted according to the adjusted share capital of sample shares. The calculation formula is:

reporting period index = adjusted market value of constituent stocks in the reporting period/base period× 1

, where adjusted market value = ∑ (market price× number of adjusted stocks). Adjust the number of share capital Adjust the share capital of constituent stocks by grading and filing. The grading method of SSE 5 index is shown in the following table:

circulation ratio (%) ≤ 1 (1,2] (2,3) (3,4) (4,5) (5,6) (6,7) (7,8) > 8

weighted proportion (%) circulation proportion 2 3 4 5 6 7 8 1