2. It is a social pooling fund;

3. It is a fund in the personal account in the basic old-age insurance system, which is called the personal account fund;

4. It is an enterprise supplementary security fund including enterprise supplementary endowment insurance fund (also called "enterprise annuity") and enterprise supplementary medical insurance.

5. The National Social Security Fund refers to the social security fund managed by the National Social Security Fund Council and centrally managed by the central government, which consists of funds allocated by the reduction of state-owned shares and equity assets, funds allocated by the central government, funds raised by other means approved by the State Council and the expected annualized income of their investments.

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.

Extended data:

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.

Social security fund assets are assets independent of the board of directors, social security fund investment managers and social security fund custodians. This is the so-called "social security fund" that can enter the stock market. In other words, the social security fees paid by individuals are added to the capital market by state specialized agencies. . After making a profit, the state will use it to establish a social security system.