Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Celanese (CE) downgraded to Neutral from Buy at Goldman Sachs with analyst Robert Koort citing valuation. 2. Welltower (WELL) downgraded to Equal Weight from Overweight at Barclays with analyst Steven Valiquette citing valuation. 3. Xilinx (XLNX) downgraded to Sector Weight from Overweight at KeyBanc. 4. Public Storage (PSA) downgraded to Underperform from In Line at Evercore ISI. 5. Thor Industries (THO) downgraded to Neutral from Buy at Northcoast with analyst Brandon Rolle saying he views shares as "fairly" valued following yesterday's rally and would get more constructive if there was evidence of improving North American retail demand and market share stabilization. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.