Stocks ended lower but off lows, sizing up Trump's new tariff threats against Apple and EU. Treasury yields also eyed as big tax bill progresses.

Constellation Energy, the largest nuclear operator in the U.S., rose by 3% by Friday afternoon, while shares of uranium mining firms Uranium Energy (23%), Energy Fuels (17%), Cameco Corp. (9.5%) and Centrus Energy (22%) also spiked in value.

Now they have a trade war problem to worry about again. Stocks and the dollar fell Friday after President Donald Trump brought the trade war back to the forefront with threats of massive tariffs against one of America’s most valuable companies and one of its most important trading partners.