While you were sleeping: Wall Street slips

While you were sleeping: Wall Street slips
Margreet Dietz
By Margreet Dietz Aug. 25 (BusinessDesk) - Wall Street moved lower ahead of Friday’s speech by Federal Reserve Chair Janet Yellen who might offer clues on the timing for an interest rate hike by the central bank—which some Fed officials have recently suggested could be as early as next month.  "The rhetoric we've gotten from the Fed over the past week from numerous Fed officials ... has reminded the market that the Fed can raise rates at any meeting," Gary Pollack, head of fixed-income trading at Deutsche Bank Private Wealth Management in...