Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Dean Foods (DF) was downgraded to Neutral from Overweight at JPMorgan and to Equal Weight from Overweight at Stephens. 2. Armstrong Flooring (AFI) downgraded to Hold from Buy at Gabelli. 3. Plains All American (PAA) was downgraded to Neutral from Outperform at Baird and to Sector Perform at Scotia Howard Weil. 4. Beazer Homes (BZH) downgraded to Neutral from Outperform at Wedbush with analyst Jay McCanless citing valuation and lack of near-term catalysts. 5. Noble Corp. (NE) downgraded to Hold from Buy at Societe Generale with analyst Edward Muztafago saying the weak pricing environment will limit near-term improvement in the deepwater market and believes it will be second half 2018, at the earliest, before new project work picks up more materially. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.