A股上证指数短线跳水跌超0.8%，深成指翻绿，创业板指涨幅收窄至1%，全市场超4000只个股下跌

Core Viewpoint - The A-share market experienced a significant decline, with the Shanghai Composite Index dropping over 0.8%, while the Shenzhen Component Index turned negative and the ChiNext Index's gains narrowed to 1% [1] Market Performance - More than 4,000 stocks in the market saw a decline, indicating a broad-based sell-off across various sectors [1]