A sharp reversal wiped out the post-election rally: after stocks rose Wednesday following Democrats’ capture of both chambers of Congress, major indexes plunged Thursday. The Dow fell 3.44%, the S&P 500 4.36%, and the Nasdaq 5.52%; the Nasdaq erased its entire rally in six minutes. The Dow was on track for its worst second trading day after a midterm election since records began in 1896, while the S&P faced its steepest such second-day decline in nearly a century. The sell-off also pushed the Nasdaq-100 further into correction territory and left both it and the broader Nasdaq below their 200-day moving averages.
Technology and AI-related companies bore the brunt. Semiconductor stocks lost about 10% as a group, leaving the sector more than a third below its June peak; Nvidia shed over $400 billion in market value, and chipmakers’ combined losses exceeded $1 trillion. Memory and storage companies fell especially hard, while losses spread to chip equipment, cloud computing, data-center infrastructure, and speculative favorites including Tesla, SpaceX, Robinhood, and Coinbase. Investors are reassessing what a Democratic Congress could mean for AI data-center expansion, amid earlier concerns about AI spending and the borrowing costs of heavily indebted builders. Most stocks fell, though AppLovin surged after strong results and a few defensive companies rose. The next major economic signal is Friday’s October jobs report.
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