Morning Movers: Yum Brands, Best Buy, BlackBerry

March 12 (Bloomberg) -- Bloomberg's Tom Keene, Scarlet Fu and Sara Eisen highlight the news you need to follow for today's trading. They speak on Bloomberg Television's "Bloomberg Surveillance."
When the Dollar's Too Strong: Reaction to Yellen's Speech
41:48 - David Mazza, Carl Riccadonna and Cliff Noreen discuss Janet Yellen's speech. They speak with Alix Steel on "Street Smart." (Source: Bloomberg)
  • Yellen: Rise in Rates Appropriate Over Next Few Years
  • Yellen Says Rate Rise May Be Warranted Later This Year
  • Iran Nuclear Deal Would Be Negative for Oil, Gheit Says