Securities investment fund refers to a collective investment system in which most investors make unequal contributions and pool them into funds, which are managed by professional investment institutions and kept by independent fund custodians. According to the best investment income target and minimum risk agreed with customers, investment institutions will invest their concentrated funds in various securities and other financial commodities moderately and mainly. After obtaining the income, the original investor shares the ownership of the fund assets, the right to distribute profits and the right to pay off the remaining assets in proportion to the capital contribution, and the investment institution itself gets a service fee as the fund manager.

Securities investment funds can be divided into different categories according to different classification methods:

1. According to different organizational methods, it can be divided into: corporate investment funds and contractual investment funds.

2. According to the different ways of realization or redemption, it can be divided into open-end and closed-end investment funds.

3. According to the different sources and application fields of funds, it can be divided into domestic funds, national funds, international funds, overseas funds and regional funds; Onshore funds and offshore funds

4. According to the different investment risks and returns, it can be divided into growth investment funds, income investment funds and balanced investment funds.

5. According to different investment objects, it can be divided into stock funds, bond funds, money market funds, hybrid funds and flexible allocation funds.