You can buy this, but it's not just this.

The CSI 3 is only an index, and basically all large fund companies have special index funds, 5131 is from E Fund Company, as well as Huaxia Fund, harvest fund, Bosera Fund, Fuguo Fund, etc. These fund companies all have corresponding 3 index funds to subscribe for.

the index funds of each company are also different. Take E Fund as an example. There are two funds that track the 3 index, namely, E Fund Shanghai and Shenzhen 3ETF Link (112) and E Fund Shanghai and Shenzhen 3ETF(5131). Other fund companies are similar, with different funds tracking the same index. Of course, according to the nature of the fund, it can be purchased in the fund company or the agency, or it can be traded directly on the floor.

For which index fund to choose, you can check the deviation between the historical net value of the relevant fund and the 3 index, and the smaller the deviation, the better the tracking effect.

Expand data

Sample selection space of index constituent stocks, and the listing and trading time is more than one quarter; Non-ST and *ST stocks, non-suspended stocks; The company is in good operating condition, with no major violations of laws and regulations and no major problems in its financial report in the last year; The stock price has no obvious abnormal fluctuation or market manipulation; Exclude other stocks that cannot enter the index as determined by experts. The sampling standard is to select stocks with large scale and good liquidity as sample stocks.

the sampling method is to calculate the average daily total market value, average daily circulating market value, average daily number of shares in circulation, average daily turnover amount and average daily turnover number of the stocks in the sample space in the latest year (since the listing of new shares), and then carry out a weighted average of the proportions of the above indicators according to 2: 2: 2: 2: 1, and then sort the calculation results from high to low to select the top 3 stocks.

the index is weighted by adjusting the share capital. 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 range of (3,4), and the corresponding weighted proportion is 4%, so 4% of the total share capital is taken as the weight.

in principle, the index constituent stocks are adjusted once every six months, usually in early January and early July, and the adjustment plan is announced two weeks in advance. In principle, a stock that has lost money in its latest financial report will not enter the newly selected sample unless this stock affects the representativeness of the index.

the base date of the Shanghai and Shenzhen 3 Index is December 31st, 24, and the adjusted market value of 3 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 April 8th, 25.

the calculation formula is: reporting period index = adjusted market value of constituent stocks in the reporting period/adjusted market value of constituent stocks in the base date ×1

Baidu Encyclopedia-CSI 3 Index.