The S&P 500 rose 1.8 percent between Thursday, December 31, and Friday, January 8. It was the biggest weekly gain since late November. planting the index above 3,800 for the first time ever. The Nasdaq-100, Russell 2000 and Dow Jones Industrial Average also hit new records.
The S&P 500 rose less than 0.1 percent between Friday, February 1, and Friday, February 8. It was only the sixth and smallest advance in the last seven weeks, following the index’s sharp rebound in January. The index also had its narrowest weekly trading range (just 57 points) since late September.