The index universe of CSI300 includes all the A shares listed at the two exchanges satisfying the following conditions:

The listing time of a stock is more than three months unless the daily average total market value of a stock since its initial listing is ranked top 30 in all the A shares; Non-ST or *ST stocks; non-temporary suspension stocks from trading;

A listed company should have good performance without serious financial problems or laws and regulations breaking events in the most recent year;

No large price volatility that shows strong evidence of manipulated;

Delete stocks considered by the Index Advisory Committee as inappropriate.