Stock Market Today: S&P 500, Nasdaq open lower as tech stock drop sharply; Dow rises as Treasury yields drop — Live Feedhttps://www.live-feeds.com/feed/stock-market-today-s-p-500-nasdaq-open-lower-as-tech-stock-drop-sharply-dow-rises-as-treasury-yields-dropContinuously updated, source-cited coverage. S&P 500 and Nasdaq Slide as Tech Stocks Drophttps://www.live-feeds.com/feed/stock-market-today-s-p-500-nasdaq-open-lower-as-tech-stock-drop-sharply-dow-rises-as-treasury-yields-drophttps://www.live-feeds.com/feed/stock-market-today-s-p-500-nasdaq-open-lower-as-tech-stock-drop-sharply-dow-rises-as-treasury-yields-drop#u131830Sun, 18 Oct 2026 12:45:38 +0000The S&P 500 and Nasdaq opened lower, driven by a sharp drop in technology stocks and AI chip makers. Global technology shares slumped as enthusiasm for artificial intelligence stocks wobbled and financing worries grew. Meanwhile, the Dow rose as Treasury yields dropped. Investors flocked to bonds amid the broader tech sector retreat. The market moves followed a volatile week of trading that left major indices tracking weekly losses. Analysts noted that concerns over sector growth and chip advances weighed heavily on investor sentiment during the session.Why it mattersTechnology shares have