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.

(Reuters) -Aluminum producer Alcoa said on Tuesday that U.S. President Donald Trump's plan to impose a tariff on aluminum imports could cost about 100,000 U.S. jobs and would itself not be enough to entice it to boost production in the country.

President Donald Trump’s plan to impose a 25% tariff on all imported aluminum could cost 100,000 American jobs, the CEO of one of the largest US aluminum makers warned on Tuesday.