Wall Street is mixed in premarket on uneven earnings, tariff anxiety

By YURI KAGEYAMA and MATT OTT Associated Press Business Writers
Wall Street was mixed in premarket trading Thursday, the final trading day in a holiday-shortened week that began relatively quietly compared with the wild swings of the past several weeks.
Futures for the S&P 500 rose 0.3%, while futures for the Dow Jones Industrial Average tumbled 1.6%. Nasdaq futures were up 0.6% before the bell.
UnitedHealth Group, one of the biggest weights on the Dow, tumbled nearly 20% before the bell aft