AI Safety Warnings and Oil Shocks Trigger Global Market Sell-off

Global financial markets experienced severe volatility between September 13 and 17, 2026, driven by a dual shock in the technology and energy sectors. Dario Amodei, CEO of Anthropic, published an essay urging the AI industry to slow the development of advanced models to prevent catastrophic risks, including the possibility of AI agents taking over the internet. This proposal received support from OpenAI CEO Sam Altman and xAI's Elon Musk, triggering a massive sell-off in semiconductor stocks including Nvidia, Intel, and AMD. In contrast, President Donald Trump dismissed these safety concerns as a "hoax" and a "SICK conspiracy," arguing that restrictions would only benefit China.

Simultaneously, geopolitical instability in the Middle East drove oil prices above $100 per barrel. Houthi rebels launched drone attacks on Saudi Arabia, forcing the shutdown of the critical East-West pipeline and seizing control of strategic islands near the Bab el-Mandeb Strait. These disruptions, combined with Iranian attacks in the Strait of Hormuz, pushed Brent crude toward $113 a barrel and sent the U.S. 10-year Treasury yield to a 19-year high of over 5%.

The convergence of energy-driven inflation and AI uncertainty pressured global indices, including the S&P 500 and Nasdaq. Investors shifted toward defensive assets and cybersecurity firms as they anticipated a Federal Reserve interest rate hike on Wednesday. Market participants placed the probability of a 25-basis-point hike above 90%, with expectations that Chairman Kevin Warsh would raise rates to a range of 3.75% to 4% to combat persistent inflation.