UBS upgraded Devon Energy Corporation (NYSE:DVN) to a "Buy" rating, indicating a positive shift in financial health and operational efficiency.Devon Energy is recognized as a deep-value buy with capital efficiency, a healthier balance sheet, and reduced capital expenditure intensity.The company offers a modest forward yield of 2.56%, with strong shareholder returns supported by share buybacks.Devon Energy Corporation, listed on the NYSE under the symbol DVN, is a prominent player in the oil and gas industry ...