1. Trust fund, also known as investment fund, is a collective investment method with * * * benefits and * * risks. It refers to a collective investment trust system in which the unequal funds of most investors who are uncertain in society are pooled through contracts or companies, and fund bonds are issued to form trust assets of a certain scale, which are handed over to professional investment institutions for diversified investment according to the principle of asset portfolio, and the profits obtained are shared by investors in proportion to their capital contribution and bear corresponding risks.

2. According to different standards, securities investment funds can be divided into different types: according to whether the fund share can be increased or redeemed, it can be divided into open-end funds and closed-end funds. According to different organizational forms, it can be divided into corporate funds and contractual funds. According to the difference of investment risk and income, it can be divided into growth fund, income fund and balanced fund. According to different investment objects, it can be divided into stock funds, bond funds, money market funds and futures funds.