Stock market today: Dow, S&P 500, Nasdaq sink as Trump tariff threats and bond sell-off rattle nerves

US stocks posted hefty losses early Tuesday after President Trump reignited trade-war tensions with Europe over Greenland, while a Japan-led global bond sell-off reverberated through markets. The Dow Jones Industrial Average (^DJI) tumbled roughly 1.5%, or over 700 points. The S&P 500 (^GSPC) sank 1.4%, while the Nasdaq Composite (^IXIC) retreated 1.6% as investors fled risker bets, on the heels of a losing week for Wall Street stocks. Investors are facing a rocky return to trading as the risk of full-o ...