US stock market jumps sharply today as Dow Jones reclaims 50,000 — Why the Dow, S&P 500 and Nasdaq are all in green after U.S.-China trade summit boost

US stock market jumps sharply today as the Dow Jones, S&P 500 and Nasdaq rally on renewed optimism from the U.S.-China trade summit and booming AI demand. Nvidia and Cisco led Wall Street gains while investors balanced strong earnings against inflation fears and rising oil prices. The Dow Jones Industrial Average climbed more than 260 points while the S&P 500 and Nasdaq hit fresh highs behind strong technology gains and growing AI optimism.