Fund companies are first divided into investment research department and marketing department. The former is responsible for research and analysis, while the latter is responsible for product packaging and sales. A fund product needs the cooperation of colleagues in many departments. Macro researchers will study economic aspects, while industry researchers will study industries and individual stocks, and then recommend stock pools to fund managers. With the assistance of the assistant, the fund manager will build a portfolio, and traders will buy and sell stocks according to the instructions of the fund manager. At the same time, the financial and auditing departments need to work together to ensure the compliance and normal operation of the fund. Fund companies generally have 100-400 people, and investment and research teams account for more than half.