Economic Observation Network The stock index futures opened in the morning session, with the main contracts showing mixed gains and losses. The main contract of CSI 300 Index Futures (IF) fell by 0.02%, the main contract of SSE 50 Index Futures (IH) fell by 0.21%, the main contract of CSI 500 Index Futures (IC) rose by 0.32%, and the main contract of CSI 1000 Index Futures (IM) rose by 0.49%.