US stock markets face volatility amid rising oil prices and inflation fears

US stock markets experienced volatility at the end of August as investors reacted to rising oil prices and inflation concerns. While the Dow Jones, S&P 500, and Nasdaq Composite all managed to post monthly gains—driven largely by the technology sector and artificial intelligence interest—the final trading sessions saw declines across major indices.

Oil prices rose significantly, with Brent crude exceeding $90 per barrel, fueled by geopolitical tensions involving the US, Iran, and military developments near the Strait of Hormuz. This surge in energy costs, combined with rising US Treasury yields, has heightened fears that inflation could persist, potentially influencing the Federal Reserve's monetary policy decisions.

Despite the late-month turbulence, the technology sector remained a primary driver for August growth. Companies such as Nvidia, Microsoft, and Micron Technology saw substantial gains, helping the Nasdaq lead the monthly performance. However, the combination of high energy costs and hawkish signals from Federal Reserve officials has created a cautious outlook for the market heading into September.