Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Mazor Robotics (MZOR) downgraded to Neutral from Buy at Sterne Agee CRT with analyst Gregory Chodaczek citing valuation with the stock up 60% since May 18. 2. Mosaic (MOS) downgraded to Hold from Buy at Stifel with the firm citing overcapacity of fertilizer production, as well as pressure on fertilizer prices caused by oil price declines and the rising U.S. dollar. 3. Isle of Capri (ISLE) downgraded to Market Perform from Outperform at Telsey Advisory with analyst David Katz arguing the rating changed is based on comparatively lower organic revenue growth, an unlikely transformative REIT transaction, and decelerating cost cutting. The analyst lowered his price target on shares to $18 from $19. 4. Terex (TEX) downgraded to Equal Weight from Overweight at Morgan Stanley with the firm arguing that it sees limited upside to Terex shares following the termination of the Zoomlion bid for the company and said the current discount to the group is justified given challenging operating environment and uneven execution. 5. Lockheed Martin (LMT) downgraded to Hold from Buy at Berenberg. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.