Stocks tumble on weak labor market data and AI concerns

By John Towfighi, CNN New York (CNN) — US stocks were lower Thursday, continuing a recent patch of volatility, as Wall Street grappled with persistent nerves about artificial intelligence and economic data showed the labor market weakened over the past two months. The Dow was down 637 points, or 1.29%. The S&P 500 fell 1.37%,