According to Cai Xi's survey. The size of the fund is generally between 2 billion and 8 billion. Excessive fund size will also increase the difficulty of fund management. When the fund scale is too large, the fund manager will generally suspend the subscription to control the scale. If the scale of the fund is too small, the rise and fall of individual heavyweights will have a great impact on the performance of the fund, which will increase the risk of the fund, and the small-scale fund will also be greatly affected by the huge redemption, which is not conducive to the stability of the fund performance.

Fund, in English, refers to a certain amount of funds set up for a certain purpose. It mainly includes provident fund, trust and investment fund, insurance fund, retirement fund and various foundation funds. From the accounting point of view, capital is a narrow concept, which refers to funds with specific purposes and uses. The fund we are talking about mainly refers to the securities investment fund.