A股三大股指尾盘下跌，创业板指、深证成指均跌超1%，沪指跌0.86%，微盘股指数跌幅扩大至2.5%；超4300股下跌

Group 1 - The A-share market experienced a decline in the three major indices, with the ChiNext Index and Shenzhen Component Index both falling over 1%, while the Shanghai Composite Index decreased by 0.86% [1] - The micro-cap stock index saw a more significant drop, expanding its decline to 2.5% [1] - More than 4,300 stocks in the market recorded a decrease [1]