The leverage ratio of stock index futures varies with the market and varieties, generally between 5- 10 times. Different futures exchanges and futures varieties may have different leverage ratios. Taking China as an example, the leverage ratio of CFFEX Shanghai-Shenzhen 300 stock index futures is about 10, and that of CSI 500 stock index futures is about 7 times.

It should be noted that the leverage ratio is dynamic and may change with factors such as market environment and policy adjustment. When trading stock index futures, we should pay close attention to the relevant regulations and announcements of the exchange and understand the latest leverage ratio requirements.

In addition, the use of leverage for futures trading can amplify the benefits, but at the same time it also amplifies the risks. When trading stock index futures, we should fully understand the risks of leveraged trading, reasonably control positions and avoid excessive speculation.