US stocks today: Dow Jones soars 600 points, S&P, Nasdaq rise over 1% after Trump ‘postpones’ strikes on Iran by ET Markets | March 23, 2026 8:00 pm | Indian Stocks, Market, News Wall Street’s main indexes opened higher on Monday as risk appetite returned to markets after U.S. President Donald Trump said he would order the military to postpone strikes against Iranian power plants and energy infrastructure.