Insurance companies carry out investment-linked insurance, and their subsidiaries will set up professional institutions/subsidiaries to invest in the stock market and use the insurance funds of policyholders to increase their value in the stock market. It operates like a fund, except for the net share value, a lot of information is opaque and public, and the value-added speed is lower than that of similar open-end funds. It can only be said that it is a way for insurance companies to promote insurance.