Stocks dropped today after the National Association of Realtors reported existing-home sales fell 2.7% in August, the first decline after a 4-month winning streak. The drop in the housing market sent materials stocks lower, with Alcoa down 4.6%. Crude oil also fell $3.08 to $66.09 a barrel, its lowest level in 2 months. The Dow dropped 41 points to 9,707. The Nasdaq lost 24 points, settling at 2,108, and the S&P 500 fell 10 points to close at 1,051, the Wall Street Journal reports.