From the main terms of the four stock index futures contracts, the main difference lies in the contract multiplier and margin standard.

Contract multiplier: The contract multiplier of CSI 1000 stock index futures and CSI 500 stock index futures is RMB 200 yuan per point, and the contract multiplier of CSI 300 stock index futures and SSE 50 stock index futures is RMB 300 yuan per point.

Margin standard: the margin of CSI 1000 stock index futures is15%; The margin of CSI 500 stock index futures is14%; The margin ratio of Shanghai and Shenzhen 300 stock index futures and Shanghai 50 stock index futures is 12%.

Other differences can be seen from the following figure: