Redburn Downgrades Rio Tinto To Sell By: Benzinga via Benzinga June 09, 2015 at 09:05 AM EDT Redburn downgraded Rio Tinto plc (ADR) (NYSE: RIO) from Buy to Sell. Rio Tinto shares have dropped 18.16 percent over the past 52 ... Read More >> Related Stocks: Rio Tinto Plc ADR