Wall Street ends modestly lower after careening from a small gain to as much as 10% below its record Boston 25 News [Video]

NEW YORK — (AP) — Wall Street ended lower after careening from a small gain to 10% below its record. The whipsaw trading followed the latest escalation in President Donald Trump’s trade war. The S&P 500 fell 0.8% Tuesday, after falling as much as 1.5%. The Dow Jones Industrial Average fell 478 points, or 1.1%. The Nasdaq composite slipped 0.2%. Gains for Tesla and other influential stocks muted the losses. Trump said he would double his planned tariffs on steel and aluminum for Canada, a retaliation that prompted the provincial government of Ontario to back down on its planned surcharges on electricity sold to the U.S.

THIS IS A BREAKING NEWS UPDATE. AP’s earlier story follows below.

NEW YORK (AP) — A manic day on Wall Street is sending the U.S. stock market careening, from a slight morning gain to a 10% drop from its record set last month and back again, following President Donald Trump’s latest escalation in his trade war.

Such head-spinning moves are …