Investment companies in a broad sense include trust and investment companies, finance companies, investment banks, fund companies, commercial banks, investment departments of insurance companies and other financial institutions, as well as various enterprises engaged in property rights investment and securities investment. In a narrow sense, an investment company refers to the main body of a legal person investment fund and is a profit-making joint stock limited company established according to law. Investors become shareholders by buying shares in the company, and the shareholders' meeting chooses an investment management company to manage the company's assets. These investment companies provide a mechanism for small investors: they can organize themselves to obtain the benefits of large-scale investment.