深证成指跌幅扩大至1%，上证综指现跌0.28%。

Core Viewpoint - The Shenzhen Component Index has seen a decline of 1%, while the Shanghai Composite Index has decreased by 0.28% [1] Group 1 - The Shenzhen Component Index's drop indicates a broader market trend affecting investor sentiment [1] - The Shanghai Composite Index's slight decline suggests a more stable but cautious market environment [1]