Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. United Rentals (URI) upgraded to Outperform from Market Perform at Avondale with analyst Lawrence Pfeffer saying he believes the acquisition of NES Rentals provides URI with increased means to meet or exceed expectations and provides several levers to drive EBITDA growth independent of the cycle. 2. Estee Lauder (EL) upgraded to Outperform from Perform at Oppenheimer with analyst Rupesh Parikh saying the company is better positioned for growth following recent acquisitions in the makeup category and more aggressive partnerships. 3. Grainger (GWW) upgraded to Hold from Sell at Deutsche Bank with analyst John Inch saying the company's distributor positioning is likely to continue to be favorably viewed by the market. The analyst raised his price target for the shares to $246 from $194 following the company's fourth quarter results. 4. Clovis (CLVS) upgraded to Overweight from Neutral at Piper Jaffray with analyst Steven Breazzano saying he has confidence in the total market potential for PARP inhibitors and expects them to "supplant platinum therapy well beyond ovarian or breast cancer and define new combinations broadly in oncology." 5. RPC, Inc. (RES) upgraded to Outperform from Neutral at Credit Suisse and to Buy from Neutral at Guggenheim. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.