The US stock market closed lower amid the escalation of tensions between the US and Iran, which triggered a broad market sell-off. The Dow Jones Industrial Average plunged more than 800 points at one point, then narrowed its losses, ultimately closing down 73 points at 48,904.78. Brent crude oil prices surged over 8% due to growing supply concerns, while US Treasury yields rose, dampening market expectations of a Federal Reserve rate cut in the near future. Technology and artificial intelligence-related stocks were particularly under pressure. Amid increasing geopolitical uncertainty, investors flocked to safe-haven assets such as gold.