Citi Downgrades Refiners: What You Should Know By: Benzinga via Benzinga October 21, 2015 at 11:10 AM EDT Citi has downgraded a handful of U.S. refiner stocks based on shrinking differentials and falling production. The firm maintains Buy ... Read More >> Related Stocks: Brent Crude Cvr Refining LP Hollyfrontier Corp Marathon Petroleum PBF Energy Inc Phillips 66 Valero Energy WT Offshore iPath Dow Jones-Goldman Sachs Crude Oil Fund