
Wall Street mixed in choppy trading; UnitedHealth plummets
(For a Reuters live blog on U.S., UK and European stock markets, click or type LIVE/ in a news window) Indexes: Dow down 1.28%, S&P 500 up 0.23%, Nasdaq down 0.23% US-Japan tariff talks on radar Alphabet falls after ruling Insurers slump after UnitedHealth results (Updates through late morning trade) By Lisa Pauline Mattackal and…