A bank fund is a fund company that publicly raises a small amount of funds to the society, then invests with the raised funds, earns handling fees and returns profits to everyone. Funds are divided into closed-end and open-end according to trading methods. Closed means that you can only trade within a certain period of time, and open means that you can trade at any time. Generally speaking, everyone invests in open-end funds.

Fund, in English, 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. From the accounting point of view, capital is a narrow concept, which refers to funds with specific purposes and uses. The fund we are talking about mainly refers to the securities investment fund.