Stock markets: S&P 500 facing ‘correction’ as FTSE 100, Nikkei and Bitcoin plummet Daily ExpressUS tech stocks sell off as traders fret over ‘frothy’ AI valuations Financial TimesDow drops 500 points, S&P 500 falls for a fourth day as tech slumps, bitcoin briefly dips below $90,000: Live updates CNBCStock market today: Dow, S&P 500, Nasdaq sink as worries on AI, US economy hit markets before Nvidia earnings Yahoo FinanceWall Street slides as valuation concerns, rate-cut jitters linger Reuters