US stock markets faced a decline as escalating hostilities between the US and Iran contributed to increased oil prices, approaching $100 per barrel. The Dow Jones Industrial Average dropped over 400 points, marking a significant downturn after a record rally. Investors seemed unsettled by the geopolitical situation, leading to mixed trading reports, particularly in technology stocks. While some stocks like Marvell continued to gain, the overall sentiment reflected concerns over the Middle East impasse and its impact on global markets.