US stock market dropped sharply on March 27, 2026. Dow Jones futures fell 469 points. The S&P 500 lost 1.74%. The Nasdaq Composite slid 2.38%. This sudden fall signals rising fear. Trump’s war deadline is now the biggest trigger. Markets dislike uncertainty. Deadlines increase risk fast. Investors are pulling money from equities. Oil prices are rising above $100. Bond yields are climbing near 5%. This adds pressure on stocks. Volatility is surging across markets. The short-term outlook looks bearish. However, any diplomatic signal could reverse sentiment quickly.