【股指期货早盘收盘】沪深300股指期货（IF）主力合约跌0.50%，上证50股指期货（IH）主力合约跌0.31%，中证500股指期货（IC）主力合约跌0.22%，中证1000股指期货（IM）主力合约跌0.02%。

Core Viewpoint - The stock index futures market showed a downward trend in early trading, with all major contracts experiencing declines [1] Group 1: Index Futures Performance - The CSI 300 index futures (IF) main contract fell by 0.50% [1] - The SSE 50 index futures (IH) main contract decreased by 0.31% [1] - The CSI 500 index futures (IC) main contract dropped by 0.22% [1] - The CSI 1000 index futures (IM) main contract saw a slight decline of 0.02% [1]