【股指期货午盘收盘】沪深300股指期货（IF）主力合约跌0.65%，上证50股指期货（IH）主力合约跌0.63%，中证500股指期货（IC）主力合约跌0.83%，中证1000股指期货（IM）主力合约跌1.11%。

Core Viewpoint - The major stock index futures in China experienced declines during the midday session, indicating a bearish sentiment in the market [1] Group 1: Index Performance - The CSI 300 index futures (IF) main contract fell by 0.65% [1] - The SSE 50 index futures (IH) main contract decreased by 0.63% [1] - The CSI 500 index futures (IC) main contract dropped by 0.83% [1] - The CSI 1000 index futures (IM) main contract declined by 1.11% [1]