According to scientific and objective methods, the SSE 50 Index selects 50 representative stocks with large scale and good liquidity in Shanghai, which comprehensively reflects the overall situation of a group of leading enterprises with the most market influence in Shanghai. SSE 50 Index was officially released on June 5438+1October 2, 2004. Its goal is to establish an active and large-scale investment index, which is mainly used as the basis of derivative financial instruments.

The sample stocks of CSI 500 Index are generated by deducting the sample stocks of CSI 300 Index and the top 300 stocks with average daily market value in the latest year. In other words, it is in contrast to the Shanghai and Shenzhen 300 stock index futures, which refers to large-cap stocks, and the CSI 500 refers to the stock index futures of small and medium-cap stocks.