U.S. stock futures are showing signs of decline as concerns mount over the technology sector, particularly ahead of key earnings reports from Nvidia. Major indices, including the Dow Jones, S&P 500, and Nasdaq, are poised to open lower amid escalating tensions surrounding Iran sanctions and rising bond yields. A disappointing performance from Walmart has further exacerbated market fears, contributing to a significant drop in stock prices. Investors are closely monitoring these developments as they assess the potential impact on the broader market. The outlook appears grim as fears over geopolitical conflicts and inflation tests loom on the horizon.