JJJL is the abbreviation of fund manager. Fund manager is a professional category in the financial industry, and is responsible for combining the managed funds and making different portfolio plans according to the market situation of the financial industry.

The fund manager or a group of managers is responsible for deciding the investment portfolio and investment strategy of the fund, that is, the investment strategy of each fund product. Their main job is to draw up investment plans, put forward research needs, conduct in-depth research and analysis, and finally establish investment portfolios.