【股指期货早盘开盘】沪深300股指期货（IF）主力合约跌0.12%，上证50股指期货（IH）主力合约跌0.14%，中证500股指期货（IC）主力合约跌0.31%，中证1000股指期货（IM）主力合约跌0.27%。

Core Viewpoint - The stock index futures market shows a slight decline in major contracts, indicating a bearish sentiment in the market [1] Group 1: Stock Index Futures Performance - The main contract for the CSI 300 index futures (IF) decreased by 0.12% [1] - The main contract for the SSE 50 index futures (IH) fell by 0.14% [1] - The main contract for the CSI 500 index futures (IC) dropped by 0.31% [1] - The main contract for the CSI 1000 index futures (IM) declined by 0.27% [1]