The S&P 500 plunged 3.3 percent between Friday, January 22, and Friday, January 29. It was the biggest weekly decline since October, with 85 percent of the index’s members losing value. The selloff also dragged stocks into negative territory on a year-to-date basis.
The S&P 500 slid 1.5 percent between Friday, January 8, and Friday, January 15. It was the index’s sharpest decline since the week ended October 30. The Nasdaq-100 slid 2.3 percent, while the Russell 2000 rallied 1.5 percent. That divergence between big and small has been typical lately as money shifts to value stocks and newer companies.
The S&P 500 rose 1.6 percent between Friday, January 25, and Friday, February 1. It was the fifth gain in the last six weeks, with every major sector and index moving higher.