Global markets fall after sharp declines in Big Tech stocks trigger a sell-off that moves from Asia to Wall Street. Multiple outlets report that concerns about potentially higher interest rates by the end of the year are a key driver of the decline. Investors reduce exposure to technology and AI-linked companies, leading to steep drops in major Wall Street names and weighing on broader indices. The sell-off is described as spreading from Asia markets back to the United States, contributing to a wider risk-off move across equities. Overall, the reporting ties the downturn to expectations that interest rates could remain higher for longer, affecting valuations for growth-oriented sectors such as technology. As a result, global stocks trade lower, with the focus on Big Tech declines and the impact of rate-sensitive sentiment on markets. No specific company-specific catalyst is cited in the provided summaries; the common explanation is the interest-rate concern and its effect on AI and technology stocks.