Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. United Technologies (UTX) upgraded to Outperform from Market Perform at Cowen with analyst Cai von Rumohr citing the selloff in the shares after the Raytheon (RTN) merger announcement. 2. Deere (DE) and Agco (AGCO) upgraded to Buy from Hold at Jefferies. 3. Rent-A-Center (RCII) upgraded to Equal Weight from Underweight at Stephens with analyst Vincent Caintic citing what he sees as "massive potential" for third-party retailer Rent-To-Own, telling investors that he wouldn't want to be short any Rent-To-Own stock he covers as a result. 4. Hostess Brands (TWNK) upgraded to Buy from Neutral at UBS with Steven Strycula citing three catalysts he sees. 5. Dunkin' Brands (DNKN) upgraded to Outperform from Neutral at Wedbush with analyst Nick Steyan saying he believes Dunkin' U.S. is currently undergoing an inflection in same-store sales growth that is underappreciated by the Street. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.