The key event in the market today, October 11, 2025, was a significant sell- off triggered by renewed trade tensions between the U.S. and China. President Trump announced on social media a planned 100% tariff increase on Chinese imports and export controls on critical software starting November 1. This announcement led to sharp declines across major U.S. stock indices: the Nasdaq fell about 3.6%, the Dow Jones Industrial Average dropped around 1.9% (losing nearly 880 points), and the S&P 500 declined roughly 2.7%, marking the worst single-day fall for these indices since April. Technology, semiconductor, and Chinese tech stocks were particularly hit hard. Additional factors included China's retaliatory measures such as new port fees on U.S. vessels, export restrictions on rare earth minerals critical for technology and defense sectors, and an antitrust investigation into U.S. chipmaker Qualcomm. The U.S. government shutdown, ongoing for ten days, delayed official economic data releases, adding to market uncertainty. Markets also reflected concerns about economic growth and increased volatility, with investors awaiting upcoming earnings reports and moving cautiously amid this heightened trade conflict and geopolitical tension. Commodity prices were mixed, with gold nearing $4,000 an ounce and oil prices dropping due to geopolitical developments. In summary, the market experienced a steep downturn fueled mainly by escalating U.S.-China trade hostilities, notably the looming tariffs and export controls announced by President Trump, significantly impacting tech and related sectors.