NEW YORK ( TheStreet) -- CHANGE IN RATINGS Applied Materials ( AMAT) was upgraded at DA Davidson to buy from neutral. $18 price target. Company is a technology leader and is attractive following a 9% decline, DA Davidson said. Apache ( APA) was downgraded at Stifel Nicolaus to hold from buy. Company has sizable exposure to Egypt, Stifel Nicolaus said. Fair value is $90. Cablevision ( CVC) was downgraded at Nomura to neutral from buy. Valuation call, based on a $20 price target, Nomura said. Carbo Ceramics ( CRR) was upgraded to buy at TheStreet Ratings. Dollar General ( DG) was upgraded at J.P. Morgan to overweight. $64 price target. Company can generate sustainable, mid-teens annual earnings growth, J.P. Morgan said. HK) was downgraded at Stifel Nicolaus to hold from buy. Company offered a lower 2014 outlook and diluted the stock with a recent offering, Stifel Nicolaus said. Intel ( INTC) was upgraded at Piper Jaffray to neutral from underweight. $22 price target. Downside is limited, with a 4.1% dividend yield, Piper Jaffray said. Kaiser Aluminum ( KALU) was upgraded at Sterne Agee to buy from neutral. $80 price target. Company excutes well, trades at an attractive valuation can is leveraged to increasing aerospace demand, Sterne Agee said. SL Green Realty ( SLG) was downgraded to hold at TheStreet Ratings. NWSA) was initiated with a buy rating at UBS. $19 price target. Company is a unique play for long-term investors, News Corp. said. PulteGroup ( PHM) was upgraded at Wells Fargo to outperform from market perform. Company has limited downside potential and has a favorable buyer mix, Wells Fargo said. Ross Stores ( ROST) was upgraded at Morgan Stanley to overweight from equal-weight. $77 price target. Off-price retail should benefit from poor department store results in the second quarter, Morgan Stanley said. Riverbed ( RVBD) was downgraded at JMP Securities to market perform from outperform. Company has struggled and now the company's president is leaving, JMP Securities said. Southwestern Energy ( SWN)was downgraded at BMO Capital Markets to market perform. Valuation call, based on a $40 price target, BMO Capital Markets said.