Morgan Stanley Downgrades Petrobras On 'Tough Road' Ahead By: Benzinga via Benzinga April 27, 2015 at 09:22 AM EDT In a report published Monday, analysts at Morgan Stanley downgraded Petroleo Brasileiro Petrobras SA (NYSE: PBR) to Underweight. The ... Read More >> Related Stocks: Petrobras - Petroleo Brasileiro S.A.