US stock markets today (April 28, 2026): Dow holds firm, Nasdaq weakens as AI doubts and oil spike shake tech
US markets opened on a mixed note Tuesday, with the Dow Jones holding modest gains while the Nasdaq retreated as pressure on technology shares offset strength in defensive names and select consumer stocks.By 9:59 am ET, the Dow Jones Industrial Average was up 57.59 points, or 0.12 per cent, at 49,225.38. The S&P 500 slipped…