U.S. stock indexes swing between record highs and pullbacks as investors weigh three main forces: energy prices, inflation and interest-rate expectations, and results from major AI-linked companies. On several sessions, the S&P 500 and Nasdaq either notch record closes or rise modestly, supported by strong demand expectations around artificial intelligence and rebounds in semiconductor shares. Nvidia’s recent quarterly report and outlook are repeatedly cited as a key driver, though some coverage notes traders “book profits” after strong runs and raises concerns about how much optimism is already priced in.

At the same time, multiple reports link market volatility to developments in the Middle East involving the U.S. and Iran and the impact on oil. Reports mention ceasefire-related headlines and ongoing uncertainty, alongside movements in crude prices that feed into inflation concerns. Several articles also point to hotter inflation data and higher Treasury yields, which reduce expectations for near-term Fed rate cuts.

Even as tech and chipmakers fluctuate, other factors—such as corporate earnings from large retailers and health-care names, and economic indicators like jobless claims and manufacturing—also influence sector-by-sector performance. Overall, coverage portrays a market that remains highly sensitive to macro data and geopolitics while still reacting strongly to AI-driven earnings and guidance.