Major U.S. indexes gave up their strong early gains and turned lower, setting them on track to finish a bumpy week on Wall Street with losses.
The S&P 500 slipped 0.5%, dragged down by shares of tech companies. The index rallied Thursday despite uncertainty about the Omicron variant’s potential impact on the global economy. The tech-focused Nasdaq Composite lost 1.3%. The Dow Jones Industrial Average fell 0.2%.