Securities investment fund refers to a collective securities investment model with * * * risk * * *, that is, by issuing fund shares, investors' funds are concentrated, managed by fund custodians, managed and used by fund managers, and invested in financial instruments such as stocks and bonds. There are many kinds of securities investment funds, which can be classified in different ways. According to whether the beneficiary unit can subscribe or redeem at any time and the different transfer methods, it can be divided into open-end funds and closed-end funds; According to the different organizational forms of investment funds, they can be divided into corporate funds and contractual funds; According to different investment objects, investment funds can be divided into money funds, bond funds, stock funds and so on. Buying an open-end fund can make a profit in the following three ways: 1. Net value growth: the net value of fund units increases due to the appreciation of stocks or bonds invested by open-end funds or the acquisition of dividends, bonuses, interest, etc. After the net value of fund shares rises, the difference in net value obtained when investors sell fund shares is the gross profit of investment. The real investment income is the gross profit after deducting the subscription fee and redemption fee when buying a fund. 2. Cash dividend income: According to national laws and regulations and the provisions of the fund contract, the Foundation pays dividends regularly. The cash bonus you get is also an integral part of your profit. 3. Dividend reinvestment income: If investors choose dividend reinvestment, the fund shares (rather than cash assets) held by investors will increase after dividends.