Index funds mainly invest in some large-cap blue-chip stocks in the A-share market, such as funds for large-cap stocks such as Sinopec, PetroChina, and Industrial and Commercial Bank of China.

The trend of index funds on funds is similar to that of the market. When the market goes up, the index goes up, and vice versa.

Index 300 means that this fund mainly selects 300 relatively large stocks in the A-share market. These stocks are leading companies in various industries, such as China Shenhua in the coal industry, Sinopec in the oil industry, and China Banking in the banking industry.

Banks and Industrial and Commercial Bank of China, real estate Vanke A, etc., and then a stock investment portfolio is composed of these 300 large-cap blue-chip stocks, and eventually the Index 300 Fund is formed.