Social security funds are not open to individual investors. Social security fund is a part of the endowment insurance premium paid by the state to enterprises and institutions managed by professional institutions in order to maintain and increase the value. The budget of social insurance fund in 20 13 was included in the budget report for the first time and was supervised by the highest authority in China. In 20 13, the national social insurance fund budget was compiled according to the types of insurance, including basic endowment insurance fund, basic medical insurance fund, unemployment insurance fund, work injury insurance fund, maternity insurance fund and other social insurance funds.
The basic principle of social security fund investment operation is to realize the appreciation of fund assets on the premise of ensuring the security and liquidity of fund assets. The state stipulates that social security funds can enter the stock market, of course, not all, and there are proportional restrictions. The main purpose is to maintain and increase the value of social security funds and ensure the interests of the people.