US stocks suffer worst sell-off since April as AI investment fears hit tech giants

US stocks suffered their worst sell-off since April 2025, with the Dow plunging 1,833 points, as investors worried about slowing AI infrastructure investment following midterm election results. The Nasdaq fell 5.5% into correction territory, while the S&P 500 dropped 4.4%. The "Magnificent Seven" tech giants lost over $1 trillion in market value, with Nvidia alone shedding more than $440 billion. The sell-off erased all gains from Wednesday's post-election rally. All 11 S&P 500 sectors closed lower, with technology down 7.3%. The VIX volatility index surged 11.57 points, its biggest point jump since April 4, 2025.