Recent fluctuations in the US stock market have led to significant declines across major indexes, including the Dow and S&P 500, as fears over AI disruption deepen. The Dow dropped over 600 points, with the S&P 500 facing its worst day in weeks. Investors are grappling with how AI technologies could impact various sectors and are increasingly concerned about identifying potential losers among tech stocks that are likely to be adversely affected. This sell-off follows a backdrop of mixed earnings reports and economic data exacerbating investor anxiety. The broader market has seen a pullback as both crypto and gold prices have also fallen, creating a volatile environment for traders.