The relationship between stock index futures and Shanghai and Shenzhen 300 index: It is easy to understand that the Shanghai and Shenzhen 300 index is compared to the spot in futures. For example, soybean futures have spot and futures. Under normal circumstances, futures follow the spot, spot futures generally rise and do more, and spot futures generally fall. Then stock index futures generally rise and fall with the Shanghai and Shenzhen 300 index, but it does not completely copy the trend of the 300 index. If the listed company's performance increases by 50% annually, will the stock completely replicate its performance? Definitely not. Multiple relationships between stock price ups and downs. .