Stock market today: Wall Street hesitates in mixed trading as Treasury yields rise more

U.S. stocks are hesitating in mixed trading, as strong profit reports from some big companies compete with continued worries about high interest rates. The S&P 500 was flat at the open of trading Tuesday, coming off a sharp loss after higher Treasury yields cranked up the pressure. The Dow Jones Industrial Average was up 199 points, and the Nasdaq composite was 0.1% lower. UnitedHealth Group jumped after reporting better profit for the start of the year than analysts expected. But Treasury…