恐慌指数VIX涨穿20关口，为6月份以来首次，日内涨幅超过22%。标普500指数下跌超百点，跌幅扩大至1.64%。

Core Insights - The VIX index, a measure of market volatility, has risen above the 20 mark for the first time since June, with an intraday increase exceeding 22% [1] - The S&P 500 index has dropped by over 100 points, reflecting a decline of 1.64% [1]