Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Nike (NKE) downgraded to Neutral from Buy at UBS with analyst Jay Sole saying Nike's "comeback after two relatively down years continues." 2. Infinera (INFN) downgraded to Neutral from Buy at Goldman Sachs with analyst Rod Hall assumed coverage from Doug Clark and downgrading the stock to Neutral from Buy while saying the company's success is dependent on the new products, while its "key higher TAM products are yet to fully hit the market." 3. AMC Networks (AMCX) downgraded to Underperform from Market Perform at Bernstein with analyst Todd Juenger saying he thinks it is unlikely the company will be acquired at a premium. 4. Catalyst Biosciences (CBIO) downgraded to Neutral from Buy at B. Riley FBR. 5. Noble Corp. (NE) downgraded to Hold from Buy at Jefferies with analyst Eduardo Royes saying the stock is up 18% year-to-date versus its four major peers rising only 2%. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.