Benzinga's Top Downgrades By: Benzinga via Benzinga March 11, 2016 at 09:06 AM EST Analysts at Piper Jaffray downgraded Stone Energy Corporation (NYSE: SGY) from Neutral to Underweight. Stone Energy shares closed at ... Read More >> Related Stocks: Blackstone Inc Helmerich & Payne Mosaic Co Serve Robotics Inc Williams-Sonoma