1, the role of the country in promoting economic development. Promote the horizontal financing of funds and the horizontal connection of economy, and improve the overall efficiency of resource allocation.

2. Establish and improve the self-restraint and self-development management mechanism of fund institutions.

3. Generally speaking, opening up investment channels for fund investors, expanding the scope of investment choices and adapting to the diversity of investors' investment motives, trading motives and interests can provide investors with the possibility of obtaining higher returns. Securities investment fund refers to the sales fund share, which gathers the funds of many investors to form independent assets, which are managed by fund custodians and fund managers. It is a kind of income and risk of securities investment by combination method.

Securities investment fund is an indirect way of securities investment. By issuing fund shares, fund management companies concentrate investors' funds, which are managed by fund custodians (that is, qualified banks) and managed and used by fund managers to invest in financial instruments such as stocks and bonds, and then * * * bear the investment risks and share the benefits. According to different standards, securities investment funds can be divided into different types:

According to whether fund units can be increased or redeemed, they can be divided into open-end funds and closed-end funds. Open-end funds are not listed and traded, but are generally purchased and redeemed by banks, and the fund scale is not fixed; Closed-end funds have a fixed duration, and the fund size is fixed during the duration. Generally listed on the stock exchange, investors buy and sell fund shares through the secondary market.