Fund: (1) has broad sense and narrow sense. A fund in a broad sense refers to a certain amount of funds set up for a certain purpose. It mainly includes trust and investment funds, provident funds, insurance funds, retirement funds and funds of various foundations. People usually refer to funds mainly as securities investment funds. (2) There are three main analysis methods of securities investment: basic analysis method, technical analysis method and evolutionary analysis method, in which the basic analysis method is mainly applied to the value judgment and selection of investment objects, while the technical analysis method and evolutionary analysis method 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.