S&P Market News Update

The U.S. stock market ended a turbulent week punctuated with collapse of the ruble, gyrations in the oil prices and the Federal Reserve’s policy meeting, with the biggest weekly gain since October.

The S&P 500 SPX, +0.46%  ended the day up 9.42 points, or 0.5%, at 2,070.65 and gained 3.4% over the past week. Energy and materials sectors were leading the gains on Friday and throughout the week, as investors were betting that the bottom in oil prices might be in sight. Energy sector stocks in particular jumped nearly 10% over the past week, while materials gained 5%.