Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. HP Enterprise (HPE) downgraded to Underperform from Neutral at BofA/Merrill with analyst Wamsi Mohan citing fiscal 2018 headwinds that include increased investment, a competitive pricing environment, and higher commodity costs. 2. Marathon Petroleum (MPC) downgraded to Market Perform from Outperform at Wells Fargo with analyst Roger Read saying he now expects the incentive distribution rights buyout may be at the lower end of the prior 15-20 times range. 3. Verifone (PAY) downgraded to Neutral from Buy at Northcoast with analyst Keith Housum saying he has reduced confidence in the company's ability to grow revenues and increase profitability given the delay in reaching the point of sale market with its new Carbon and Engage platform compared to initial expectations. 4. Mallinckrodt (MNK) downgraded to Equal Weight from Overweight at Morgan Stanley with analyst David Risinger saying he believes yesterday's unfavorable district court ruling in Mallinckrodt's suit against Praxair (PX) has increased the risk of an Inomax generic potentially as soon as October 2018, compared to his prior expectation of 2031. 5. BHP Billiton (BHP) downgraded to Underperform from Neutral at Exane BNP Paribas. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.