Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Workday (WDAY) downgraded to Sell from Neutral at Citi and to Hold from Buy at Evercore ISI. 2. Exelixis (EXEL) downgraded to Hold from Buy at Stifel with analyst Stephen Willey citing valuation. 3. Teva (TEVA) downgraded to Hold from Buy at Argus. 4. Cabot Oil & Gas (COG) downgraded to Market Perform from Outperform at Bernstein. 5. HP Enterprise (HPE) downgraded to Hold from Buy at Argus. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.