Money Dow plunges 600 points, the worst day since January, as China retaliates in trade war May 13, 2019Janna Herron, USA TODAYComments Off on Dow plunges 600 points, the worst day since January, as China retaliates in trade war The Dow finished more than 600 points lower on Monday after China planned to hike tariffs on U.S. goods, signaling an escalation in the trade war.