Alcoa (NYSE:AA) -2.5% in Tuesday's trading, potentially headed for its lowest YTD closing price, after saying President Trump's plan to impose a 25% tariff on aluminum imports could knock out ~100K U.

A 25% tariff would cost the U.S. aluminum industry tens of thousands of direct and indirect jobs, Bill Oplinger told an investment bank conference.

Bill Oplinger, CEO of Pittsburgh-based aluminum producer Alcoa, warned Tuesday that President Donald Trump’s 25% import tax on aluminum could kill off around 100,000 U.S jobs. “This is bad for the aluminum industry in the U.