Stock market today: Dow, S&P 500, Nasdaq retreat after rally as Iran war drags on

Market Overview - US stocks opened lower on Tuesday, with the Dow Jones Industrial Average dropping 0.8%, the S&P 500 falling around 0.6%, and the Nasdaq Composite declining 0.5% [1] - The market had previously soared on Monday due to optimism surrounding US-Iran discussions, but this sentiment faded after Iranian state media denied direct negotiations [3] Oil Market - Oil prices initially fell sharply due to the potential easing of hostilities but rebounded as fighting continued, with West Texas Intermediate crude rising 4% back above $90 per barrel and Brent crude jumping back above $103 [2] Geopolitical Context - Tensions escalated over the weekend, with President Trump warning of potential strikes on Iranian energy infrastructure if the Strait of Hormuz was not opened, while Iran threatened US assets [4] - Investors are now focusing on upcoming US manufacturing data and the end of earnings season, with GameStop set to report after the market close [4]