Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. McKesson (MCK) upgraded to Overweight from Neutral at JPMorgan with analyst Lisa Gill saying she believes additional value should be unlocked from the Change transaction and that the valuation discount versus peers is unwarranted. 2. Aegion (AEGN) upgraded to Buy from Hold at Craig-Hallum with analyst Eric Stine saying the recent pullback provides an attractive opportunity to own a "high-quality company" with positive trends across much of its business. 3. Wingstop (WING) upgraded to Conviction Buy from Buy at Goldman Sachs with analyst Karen Holthouse saying there is upside to her $36 price target. Holthouse believes Wingstop is well positioned for digital ordering and off-premise tailwinds and expects an acceleration in same-store-sales driven by national advertising momentum. 4. Parexel (PRXL) upgraded to Neutral from Sell at Goldman Sachs with analyst Robert Jones citing reduced consensus expectations and industry consolidation. 5. On Deck Capital (ONDK) upgraded to Outperform from Market Perform at FBR Capital with analyst Bob Ramsey saying he believes the company's path to profitability creates "significant" upside for the shares over the next 12 months. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.