滬深股市今(23)日午盤全面下跌,上證指數午盤下跌52.01點或1.73%,報2951.39點。深成指午盤收報11968.26點,跌245.29點或2.01%。滬深300指數午盤收報3165.25點,跌68.10點或2.11%。