U .S. stocks closed markedly lower on Friday, a day after President Donald Trump signed an executive order slapping new tariffs on dozens of countries. A weak jobs report worsened investor jitters, revealing a slowdown of hiring over recent months as Trump's previous tariffs took hold.

U.S. stocks slumped on Friday, with the S&P on track for its biggest daily percentage decline in more than three months as new U.S. tariffs on dozens of trading partners and a surprisingly weak jobs report spurred selling pressure.