Stocks ended lower on Wall Street, breaking a nine-day winning streak for the Dow Jones industrial average, the AP reports. Industrial companies had some of the biggest losses Thursday. Energy stocks fell along with the price of crude oil. Railroad operator Union Pacific gave up 3% and Kinder Morgan fell 5%. Southwest Airlines dropped 11% and Intel fell 4% after both companies reported disappointing results. The Standard & Poor's 500 index lost 7 points, or 0.4%, to 2,165. The Dow Jones industrial average slipped 77 points, or 0.4%, to 18,517. The Nasdaq composite declined 16 points, or 0.3%, to 5,073. (More Dow Jones stories.)