S&P, Dow poised for worst losing streak since August

The S&P and the Dow were down for the sixth day, a streak unseen since August, as the Federal Reserve's comments about an economic slowdown and the prospect of Britain's possible exit from the European Union spooked investors. The Fed kept short-term interest rates unchanged on Wednesday but said it continued to expect two rate hikes this year. Fed Chair Janet Yellen sounded caution that the central bank needed to see more clear signs of economic strength before lifting rates and threw some