Trust is a special property management system and legal act, and also a financial system. Trust, banking, insurance and securities together constitute a modern financial system.

Funds can be divided into broad sense and narrow sense. Broadly speaking, a fund refers to a certain amount of funds set up for a certain purpose. For example, trust and investment funds, unit trust funds, provident funds, insurance funds, retirement funds and funds of various foundations. In the existing securities market, funds are in a narrow sense, including closed-end funds and open-end funds, which have the characteristics of income function and value-added potential.