The futures presentation of the stock statement involves determining the value of the index to reflect the overall performance of the stock market. Overview of the futures presentation:
Arithmetical average method
This is a simple calculation method, with some representative sample shares first selected. Set a base date (base period) and establish a base period index. The average of the sample stock prices at the selected date is then calculated. This average is compared with the average of the base period and multiplied by the base period index to arrive at the stock price index at the current date。
Geometric mean method
This approach is used in international financial markets by influential equity indices such as the london financial times index and the united states value line index. Geometric averages determine the average share price for the reporting period and the base period by calculating the geometric average of the prices of the sample shares。
Weighted average method
Because of the different market effects of different equities, the weighted average allows for different weights to be allocated to each sample of stocks, and larger shares have a greater impact on the index. First, the price of each sample stock is multiplied by its weight, then the sum is obtained, and finally the average share price for the reporting period and base period is divided by the total weight. The weight of the weighted average method may be based on the amount of the transaction or the number of shares listed. The weighting method is a variant of this method, which uses the same measure factor as weight during the calculation period。
Methodology for the production of the 50th, 300th and 500th central index
50 index above
The 50-percent index was compiled by the middle certificate index ltd., which selected the top 50 large plate blues in the total market value and turnover of the 180-percent sample unit. The index uses the adjustment-weighting method, which combines slotting and sample-based techniques to adjust the buffer zone to ensure the scientific and stable nature of the index。
Depth 300 index
The depth 300 index, with adjusted free-flow equity as a weight, is a more realistic way of reflecting changes in the prices of real tradable shares in the market. The equity adjustment was achieved by slotting the free-flow equity. In addition, the 300 deep index uses step-by-step and sample-adjusted buffer zone techniques to reduce the tracking costs associated with changes in equity and to maintain the continuity of the index。
I'm 500
The 500-centre index is also compiled by the china-seminar index ltd., which consists of the top 500 shares of the market value of the average daily market after the elimination of the 300-single index component. It is prepared in the same way as the 300 index, which ensures the science and validity of the index。
The presentation of the stock-in-file futures will require a combination of factors to ensure that the index truly reflects market conditions. Each method has its own characteristics and context, whether it is arithmetical, geometric or weighted. In contrast, more advanced techniques and methods have been used in the preparation of indices such as 50, 300 and 500, to improve the representativeness and stability of the indicators。
