Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Wal-Mart (WMT) upgraded to Buy from Neutral at BofA/Merrill with analyst Robert Ohmes saying the U.S. strategy is working and risk/reward is favorable on e-commerce sales momentum. 2. Scorpio Tankers (STNG) upgraded to Buy from Hold at ABN Amro with analyst Glenn Lodden raising his price target for the shares to $7.50 from $4.30. 3. Parker-Hannifin (PH) upgraded to Overweight from Neutral at JPMorgan with analyst Ann Duignan saying her analysis suggests the company's synergy targets for the Clarcor (CLC) acquisition are "overly conservative." The analyst feels the deal "makes good strategic sense." She raised her price target for Parker-Hannifin shares to $173 from $146. 4. STMicroelectronics (STM) upgraded to Overweight from Equal Weight at Barclays with analyst Andrew Gardiner saying further market share and content gains will show during 2017. 5. Ecolab (ECL) upgraded to Buy from Hold at Edward Jones. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.