US stocks back to records as corporate profits keep rising

NEW YORK — U.S. stock indexes returned to their winning ways Tuesday, and the Standard & Poor's 500 index headed for a record after corporate profits continued to come in better than analysts expected. McDonald's and Caterpillar were among the big companies reporting healthier-than-forecast earnings.Higher prices for oil, metals and other commodities helped to lift energy and raw-materials companies, while tech stocks took a rare step backward after results for Seagate Technology and o