U.S. stocks slumped Friday as worries flared again on Wall Street about tariffs and inflation. The S&P 500 fell 0.9% and erased what had been a modest gain for the week. It’s one of the worse drops for the index so far in the young year,

US stocks mostly gain early Thursday as investors weigh earnings reports. Amazon results are due after the close and monthly jobs on Friday.

Wall Street drifted through mixed trading Thursday as rising fashion and cigarette stocks worked against drops for Ford Motor and Qualcomm. The S&P 500 rose 0.4% following healthy gains for stock markets across much of Europe and Asia.