US stock markets today (March 31, 2026): Wall Street rallies on de-escalation hopes; S&P 500 jumps over 1.6%, tech stocks lead gains
US stock markets moved sharply higher on Tuesday as investors cheered signs of possible de-escalation in the Middle East conflict, even as major indexes remain on track for their steepest monthly declines in years.At 10:05 a.m. ET, the Dow Jones Industrial Average surged 627.92 points, or 1.39%, to 45,844.06. The S&P 500 gained 103.78 points,…