Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Dave & Buster's (PLAY) downgraded to Market Perform from Outperform at William Blair and Raymond James, and to Hold from Buy at Loop Capital. 2. Fortis (FTS) downgraded to Market Perform from Outperform at BMO Capital with analyst Ben Pham saying he believes the current valuation already reflects the company's positive fundamentals. 3. Royal Dutch Shell (RDS.A, RDS.B) downgraded to Hold from Buy at HSBC. 4. HD Supply (HDS) downgraded to Neutral from Buy at Buckingham and to Neutral from Outperform at Baird. 5. Costco (COST) downgraded to Perform from Outperform at Oppenheimer with analyst Rupesh Parikh citing valuation. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.