Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. PTC Therapeutics (PTCT) downgraded to Underweight from Equal Weight at Barclays with analyst Gena Wang saying she sees limited upside to 2018 revenue expectations and believes PTC's growth trajectory is fully priced in at current valuation levels. 2. Cloudera (CLDR) downgraded to Neutral from Overweight at JPMorgan and to Hold from Buy at Deutsche Bank. 3. Domino's Pizza (DPZ) downgraded to Hold from Buy at Deutsche Bank with analyst Brett Levy citing valuation. 4. Virtusa (VRTU) downgraded to Hold from Buy at SunTrust with analyst Frank Atkins saying while Virtusa stock has risen 166% since November of 2016, future upside may be more limited. 5. ResMed (RMD) downgraded to Neutral from Buy at Citi with analyst Victor Windeyer citing valuation. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, Reference Link