Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Cooper-Standard (CPS) downgraded to Sell from Neutral at Goldman Sachs with analyst David Tamberrino saying the company's production-levered content is "not differentiated enough to fight the cycle" and its exposure to manufacturers, particularly to Ford (F), is unfavorable. 2. Marathon Oil (MRO) downgraded to Neutral from Overweight at Atlantic Equities with analyst Barry Maccarthy citing crude oil price concerns for the downgrade. 3. CyrusOne (CONE) downgraded to Neutral from Buy at UBS with analyst John Hodulik saying he expects the company to benefit from long-term secular trends in the data center industry but has growing concerns that near-term hyperscale demand will remain "subdued" longer than expected. 4. Union Pacific (UNP) downgraded to Equal Weight from Overweight at Barclays with analyst Brandon Oglenski saying he sees "real fundamental challenges set against high market expectations." 5. Welltower (WELL) downgraded to Market Perform from Outperform at Raymond James with analyst Jonathan Hughes citing relative 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.

Deutsche Bank placed a "Catalyst Call: Buy" on shares of Union Pacific (UNP) as a short-term investment idea. With all the attention Norfolk Southern (NSC) is getting in recent months, it is easy to overlook developments at other railroads, the analyst tells investors in a research note. The firm says Union Pacific is now the worst performing pail stock year-to-date. However, operating metrics "clearly show that UNP's renewed efforts on operations are gaining traction," contends Deutsche Bank. It keeps a Buy rating on the shares with a $266 price target.