US Stock Market Falls as Semiconductor Sector Retreats and Oil Prices Spike on Middle East Tensions

Oil prices today surged following Iranian attacks on commercial vessels in the Strait of Hormuz, a critical global shipping route. US equity markets declined simultaneously as semiconductor stocks faced pressure from competition fears and corporate spending concerns. The dual movement highlights market sensitivity to geopolitical risk and technology sector valuations.

Oil Market Response to Middle East Tensions

Brent crude oil futures climbed above $75 per barrel following reports of Iranian attacks on commercial shipping traffic. West Texas Intermediate crude reached $71 per barrel. The Strait of Hormuz, through which significant global oil supplies pass, had been experiencing gradually recovering traffic levels amid a fragile US-Iran peace arrangement. The attacks disrupted this tentative stability and triggered immediate price increases across major crude benchmarks.

Semiconductor Sector Under Pressure

The stock market decline was driven largely by weakness in semiconductor equities. Reuters reported that Chinese artificial intelligence startup DeepSeek is developing its own AI chip, intensifying competition in a sector already dominated by major manufacturers. Separately, Samsung's quarterly results, while strong on the surface, included details that alarmed investors. The South Korean chipmaker posted operating profit that surged nearly 19-fold in the second quarter, buoyed by artificial intelligence demand. However, concerns about Samsung's planned AI spending and questions about future demand sustainability prompted selling pressure.

The broader indices reflected this technology weakness. The S&P 500 declined 0.5%, while the Nasdaq Composite fell 1.2%. The Dow Jones Industrial Average ticked down 0.2% following a record-setting session that had lifted the index above 53,000.