Stocks are ending slightly lower on Wall Street as energy companies slide along with the price of crude oil, the AP reports. Oil rig operator Transocean slumped 3.6% Monday. Chipmaker Qualcomm plunged 12.7% after Apple said it was suing the company in a patent fight. High-dividend stocks did better than the rest of the market as bond yields fell, making those sectors more appealing to investors seeking income. AT&T rose 1.3%. The Standard & Poor's 500 index fell 6 points, or 0.3%, to 2,265. The Dow Jones industrial average lost 27 points, or 0.1%, to 19,799. The Nasdaq composite slipped 2 points, less than 0.1%, to 5,552. (More Dow Jones stories.)