Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. United Rentals (URI) upgraded to Outperform from Sector Perform at RBC Capital with analyst Seth Weber citing consolidation within the rental space and positive comments by rental company Sunbelt as two reasons for the upgrade. 2. Fifth Street Finance (FSC) upgraded to Outperform from Market Perform at JMP Securities with analyst Christopher York saying that the deal under which Oaktree (OAK) will become Fifth Street's investment adviser will improve both companies' corporate governance and lower Fifth Street's costs. 3. CACI (CACI) upgraded to Buy from Hold at Jefferies with analyst Sheila Kahyaoglu saying she views the company's portfolio geared towards defense solutions as "compelling" and she likes its "aggressive" capital deployment strategy. 4. Greenbrier (GBX) upgraded to Buy from Hold at Stifel with analyst Michael Baudendistel saying that the market is underestimating the benefits of the company's deal with Mitsubishi UFJ Lease & Finance and its international expansion. 5. Bottomline Technologies (EPAY) upgraded to Outperform from Market Perform at Raymond James with analyst Wayne Johnson saying he thinks the company is entering a period of high margins and more linear revenue growth and is excited about positive operating leverage from rising sales momentum and contracts that have already been expensed over a fixed cost infrastructure. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage,
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