An investment company refers to an enterprise organization that collects a large amount of funds and makes a reasonable combination according to its investment objectives. 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. Its business scope includes buying stocks and bonds of enterprises, participating in the establishment and business activities of enterprises, providing medium and long-term loans, operating domestic and foreign government bonds and fund management. The main sources of funds are issuing their own bonds, stocks or fund units, obtaining loans from other banks and accepting entrusted deposits. 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.

The business scope of investment management companies: project investment, venture capital, project financing, investment management, strategic planning, asset restructuring, financing listing and private financing.

The biggest feature of securities investment consulting companies is to collect a large number of basic information, conduct systematic research and analysis, provide analysis reports and operational suggestions for customers, and help customers establish investment strategies and determine investment directions. The consulting business of such companies mainly includes: ① accepting the entrustment of the government, securities management institutions and relevant business departments to provide research and analysis reports and countermeasures consulting on macroeconomics and securities markets; (two) to accept the entrustment of securities investors and provide business consulting on securities investment and market regulations; (3) Accepting the entrustment of the company to plan the company's securities issuance and listing plan; (4) Accepting the entrustment of securities institutions, planning relevant securities affairs plans and acting as consultants; ⑤ Editing and publishing securities market materials, publications and books; ⑥ Holding securities investment consulting lectures, reports and analysis meetings; ⑦ Publish articles, comments and reports on securities investment consulting, and provide securities investment consulting services through public media and telecommunication equipment systems.