U.S. stocks are stumbling this month amid worries over stretched valuations, with the S&P 500’s concentration in Big Tech making it vulnerable to pullbacks like the one seen Thursday.
Source: https://www.marketwatch.com/story/big-tech-drags-down-s-p-500-amid-jitters-over-highly-valued-stock-market-d7258835?mod=mw_rss_topstories