Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Workday (WDAY) upgraded to Buy from Neutral at Goldman Sachs with analyst Heather Bellini saying recent partner checks suggest accelerating momentum in the company's cloud based financial migrations. 2. Perrigo (PRGO) upgraded to Buy from Hold at Argus with analyst Jasper Hellweg stating that given his expectation that the company will begin to show initial results from its consumer-focused transition later in the year, shares appear attractively valued at 13.1-times his 2019 EPS estimates. 3. Square (SQ) upgraded to Positive from Neutral at Susquehanna with analyst James Friedman noting the stock's underperformance was due to valuation, decelerating margin expansion and decelerating GPV growth and saying he sees the company's return on margin reinvestment on the horizon. 4. Hexo (HEXO) upgraded to Hold from Underperform at Jefferies with analyst Owen Bennett stating the pressures facing the company are now better understood following its weaker than expected outlook. 5. USA Technologies (USAT) upgraded to Buy from Hold at Lake Street with analyst Jaeson Schmidt saying the company's filing of audited financials earlier this week, while containing a lot of moving parts, is a net positive. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.