On September 23, 2025, U.S. stock markets faced a notable decline, with the S&P 500 falling 0.55% to close at 4,337.44. The Nasdaq Composite dropped 3.26%, and the Dow Jones Industrial Average decreased by 1.51%. This downturn was largely influenced by a significant slump in major technology stocks, often referred to as the "Magnificent Seven." Nvidia led the decline, shedding nearly 10% of its value, marking the largest single-day market value loss in U.S. corporate history. Alphabet, Apple, and Microsoft also experienced substantial losses, contributing to the overall market downturn. ca.finance.yahoo.com
The decline in tech stocks was further exacerbated by a weaker-than-expected Institute for Supply Management (ISM) report, which dampened investor sentiment. September is historically a challenging month for the stock market, and this trend continued as investors reacted to the combination of poor economic data and the significant losses in the technology sector. The CBOE Volatility Index (VIX) rose by 1.7% to 16.9, indicating increased market uncertainty. Given these factors, investors should exercise caution and stay informed about upcoming economic data and corporate earnings reports, as they will likely influence market trends in the near future. ca.finance.yahoo.com