Market Sell-Off Driven by AI Speculation, Not Trump Policy: S&P 500 and Nasdaq Face Pullback

January 27, 2026 — The broad equity markets are experiencing a pullback not primarily due to Trump policy but speculative fears about artificial intelligence disrupting industries. The S&P 500 fell 2% on January 20, 2026, after Trump escalated rhetoric over Greenland and tariffs; it recovered by January 27. The Nasdaq Composite has declined 5.6% since its January 28 high and 6.2% since its October 29 intraday peak. Alphabet (GOOGL) down 5.4%, AMD (AMZN) down 26% since late-January, and NVIDIA (NVDA) down 7.5% in the last week. Legal publishers and tech firms reacted sharply to Anthropic’s Claude AI tool announcement, with Thomson Reuters (TRI) down nearly 20% amid speculation of disruption. However, analysts caution that legacy providers have long integrated AI and that the impact is overstated. The broader S&P 500 has lost about 43 points this year, roughly 0.28%, following 23%+ gains in 2023–2025. Bitcoin declined over 35% from its January 13 high to about $63,426, reflecting normal volatility after a significant run-up. While geopolitical and Trump-related noise can influence sentiment, concrete business events, such as UnitedHealth’s (UNH) January 27 earnings weakness and proposed Medicare rate limits, can drive more lasting volatility. Overall, the current sell-off is better explained by AI-related speculation than by policy-driven fundamentals.