Trump Revives Tariff Threats, Sparking Market Turmoil and Risk-Off Sentiment - SPX, USD, Treasuries All Fall

President Donald Trump’s renewed tariff threats, this time linked to Greenland tensions with Europe, have reignited geopolitical and trade uncertainties, rattling global financial markets on January 21, 2026. Investors are questioning the resilience of U.S. assets amid synchronized declines in equities, bonds, and the dollar. The S&P 500 dropped over 2%, marking its worst single-day fall in three months, while long-dated Treasury yields rose and the dollar weakened—signaling a broad erosion of confidence. Unlike past sell-offs, risk-off moves are not finding refuge in traditional safe-haven U.S. assets, suggesting deeper concerns about American market stability. Elevated valuations after three consecutive years of double-digit returns have left markets vulnerable. With “buy-the-dip” sentiment absent, strategists advise reviewing portfolios for defensive exposure. However, strong corporate earnings expectations and Q4 2025 results still offer fundamental support. Many investors remain cautious but not bearish, anticipating the “TACO trade”—Trump’s pattern of escalating threats before negotiating. The White House maintains that all policy actions prioritize U.S. interests. Markets remain in wait-and-see mode, sensitive to political cues and shifting risk appetite.