Funds have broad and narrow definitions. A fund in a broad sense refers to a certain amount of funds set up for a certain purpose. Such as trust and investment funds, provident funds, insurance funds, retirement funds and various foundations. People usually refer to funds mainly as securities investment funds.

There are three main analysis methods of securities investment: basic analysis, technical analysis and evolution analysis, in which the basic analysis is mainly applied to the value judgment and selection of investment objects, while the technical analysis and evolution analysis are mainly applied to the time and space judgment of specific investment operations as an important supplement to improve the effectiveness and reliability of securities investment analysis.