Stock market news today: Dow falls 500 points, Nasdaq slides as tech rout continues Yahoo FinanceDow slides more than 500 points, S&P 500 closes lower in sharp sell-off Thursday: Live updates CNBCWatch More Pressure on Chip Sector to Come: Analyst Celico BloombergWall Street ends sharply lower as anxiety rises, earnings heat up ReutersThe Dow shed 530 points as investors continued dumping AI and tech stocks Quartz