Stock index futures were lower at midday, with the main contract of CSI 500 stock index futures (IC) falling more than 3.00% during the day and now reporting 6606.8 points. The main contract of CSI 1000 stock index futures (IM) lost 7,000 points, down 2.27% during the day. The main contract of CSI 500 stock index futures (IC) lost 6,600 points, down 3.12% during the day.