Wall Street has worst start to year ever

Both the Dow and S&P 500 had their worst five-day starts in history, with the Dow falling 6.2 percent for the week and S&P 500 sliding 6 percent. The Nasdaq was down 7.3 percent this week. Oil prices fell for a fifth day and Brent lost 10 percent for the week, while the S&P energy sector also extended this week's slide, ending the day down 1.3 percent.