U.S. stock markets faced significant challenges as Wall Street ended mostly lower following the release of hotter-than-expected inflation data, marking the highest inflation levels in three years. The Dow managed to rise slightly, while the S&P 500 and Nasdaq retreated due to growing concerns over soaring prices and rising oil costs, which surged above $100 a barrel. The technology sector, particularly chipmakers like Nvidia and AMD, saw declines that further impacted overall market sentiment. Tensions regarding the situation in Iran also contributed to caution among investors, as hopes for a quick resolution wane. As a result, the markets continue to grapple with inflation fears and uncertainties ahead.