Business SummaryBrief at 3:06 a.m. EDT

Wall Street fell sharply to its worst day since June as the tech sell-off accelerated, driven by renewed concerns that the AI boom has pushed valuations too high. The S&P 500 slid 1.8% on Friday for its poorest session since June. The Nasdaq composite dropped 2.9%, while the Dow Jones Industrial Average fell 1.1%. Intel posted its biggest loss since 1974 after issuing a profit forecast below analysts’ expectations. Amazon’s latest profit report added to worries about how much companies are spending on AI-related investments. Treasury yields declined as investors sought safer assets, even as oil prices rose.