Stock market today: Dow plunges over 1,100 points, S&P 500 and Nasdaq sink as oil surges amid war worries

Market Reactions - US stocks experienced a significant sell-off, with the Dow Jones Industrial Average falling over 2.4%, or more than 1,100 points, while the S&P 500 and Nasdaq Composite dropped over 2.5% and 2.3% respectively due to escalating tensions in the Middle East [1] - The market had initially rebounded from steep losses earlier in the week, but the renewed Israeli-led attacks on Iran and Lebanon have heightened concerns about a prolonged regional conflict, impacting investor sentiment [2][3] Geopolitical Impact - The ongoing air strikes on Iran and Lebanon are expected to exert pressure on global markets, with a focus on Iran's potential retaliatory actions, which have already targeted oil infrastructure across multiple countries [3] - President Trump's comments regarding the possibility of a prolonged US military involvement have further fueled fears of an extended conflict, contributing to rising crude oil prices, which increased by around 8% amid concerns over supply disruptions [4] Corporate Earnings - Investors are also closely monitoring corporate earnings, with shares in Target rising in premarket trading after the company reported holiday and full-year sales that met Wall Street estimates [5] - Other companies such as Ross Stores, AutoZone, and Best Buy are scheduled to report their earnings, which will be closely watched by the market [5]