U.S. stocks fell Tuesday, with the S&P 500 down 0.4%, snapping a nine-day win streak, its longest in over 20 years. The Dow dropped 134 points (0.3%), and the Nasdaq slid 0.6%. Palantir Technologies plunged 11.7% despite meeting profit forecasts, as AI stock hype fades. Nvidia, an AI giant, fell 0.9%, reflecting investor skepticism. Trump’s tariffs prompted firms to slash profit outlooks, fueling uncertainty. Palantir’s $110 share price, up from $20 last year, faces pressure. The trade war’s unpredictability dampens AI-driven stocks, with rising costs and weaker consumer spending looming. Wall Street’s pullback signals growing fears of economic strain from Trump’s aggressive trade policies.