Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Shake Shack (SHAK) downgraded to Hold from Buy at SunTrust with analyst Jake Bartlett saying he believes that the company is "one of the strongest growth and brands" in the restaurant space, but he is concerned about its prospects over the near to medium term, with "unusually low" visibility on its same-store-sales amid the transition to a single-delivery partner. 2. Avis Budget (CAR) downgraded to Neutral from Buy at Northcoast. 3. Zillow (Z, ZG) downgraded to Neutral from Buy at Guggenheim with analyst Jake Fuller citing valuation. 4. Valmont (VMI) downgraded to Neutral from Buy at DA Davidson. 5. Cott Corp. (COT) downgraded to Neutral from Outperformer at CIBC. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.