1. fund, in English, refers to a certain amount of funds established for a certain purpose in a broad sense. It mainly includes trust and investment funds, provident funds, insurance funds, retirement funds and funds of various foundations. From the perspective of accounting, fund is a narrow concept, which means funds with specific purposes and uses. The funds we mentioned mainly refer to securities investment funds.

2. According to different investment risks and returns, it can be divided into growth, income and balanced funds.

3. According to different investors, it can be divided into stock funds, bond funds, money market funds and futures funds.