Trust investment fund is also called investment trust, that is, gathering unspecified investors, pooling funds, setting up investment funds, and entrusting investment experts with specialized knowledge and experience to operate, so that small and medium-sized investors can enjoy rich returns from international investment and reduce investment risks to varying degrees. * * * A form of trust to share investment income. The fund's investment targets include securities and industries.

According to different forms, it can be divided into different types: according to the different ways of realizing fund securities, it can be divided into closed-end funds and open-end funds.

1) closed-end fund. That is, a fund whose funds are fixed and cannot be repaid within a certain period of time. Its characteristic is that fund shares will not be sold to investors after issuance. Investors can buy and sell their fund shares in the securities market, but they cannot directly demand the redemption of investment funds.

2) Open-end funds. That is, the capital formation is not completely fixed, and the funds issued by it can be redeemed according to the net asset value. The characteristics of open-end investment funds are: the issuer of fund shares has the obligation to buy back the funds issued by them at any time according to the net asset value at the request of the beneficiaries, and pay them immediately.