Securities investment fund is a kind of collective securities investment model with * * * returns and * * risks, that is, investors' funds are pooled by issuing fund shares, managed by fund custodians, managed and used by fund managers, and invested in financial instruments such as stocks, bonds, foreign exchange and currencies to obtain investment returns and capital appreciation. Generally speaking, funds are expert financial products. Fund companies have risk control departments and expert research departments that individual investors cannot have, and combine concentrated funds with advanced investment theory and risk control. Expand income and reduce risk. According to whether the fund share can be increased or redeemed, securities investment funds can be divided into open-end funds and closed-end funds. 2. According to different organizational forms, securities investment funds can be divided into corporate investment funds and contractual investment funds. 3. According to the different risks and returns of securities investment, it can be divided into growth investment funds, income growth investment funds (balanced investment funds) and income investment funds. 4. According to different investment strategies, investment funds can be divided into stock funds, bond funds, money market funds, futures funds, option funds and warrant funds. 5. Investment funds can be divided into international funds, national funds, overseas funds, domestic funds and regional funds according to the different sources of funds and application areas. 6. Investment funds can be divided into dollar funds, yen funds and euro funds according to the currency types of investment objects. 7, according to whether the fund charges, investment funds can be divided into charging funds and non-charging funds.