U.S. stocks are slumping Friday amid worries about higher inflation and tariffs, while a closely watched report gave a mixed picture of the U.S. job market. The S&P 500 was down 0.9% and on track to wipe out what had been a modest gain for the week,

Amazon stock is at the bottom of the Dow Friday as the e-commerce giant's soft outlook offsets a fourth-quarter beat. This is what you need to know.