NEW YORK ( TheStreet) -- CHANGE IN RATINGSAlico ( ALCO) was upgraded to Buy at TheStreet Ratings. Arch Coal ( ACI) was upgraded at UBS to Buy from Neutral. $11 price target. Negative catalysts behind us, moving past the debt/dividend overhang, UBS said. DR Horton ( DHI) was upgraded at Guggenheim to Buy from Neutral. Home pricing is firming on higher demand, Guggenheim said. $27 price target. Hologic ( HOLX) was upgraded at JP Morgan to Overweight from Neutral. $22 price target. Risk/reward too compelling to ignore, JP Morgan said. Healthcare Realty ( HR) was upgraded at UBS to Neutral from Sell. $21 price target. Progress on lease-up portfolio, UBS said. US Airways ( LLC) was upgraded at Sterne Agee to Buy from Neutral. $18 price target. Stronger domestic outlook and acquisition optionality, Sterne Agee said. Lennar ( LEN) was upgraded at Guggenheim from Neutral to Buy. $39 price target. Low supply is helping new home pricing, Guggenheim said. McDermott International ( MDR) was upgraded at JP Morgan to Overweight from Neutral. $16 price target. Increased confidence in the growth outlook and risk profile, JP Morgan said. Nextera Energy ( NEE) was upgraded at Robert Baird from Neutral to Outperform. Valuation call, as the sector should benefit from a defensive sector rotation, Baird said. Nokia ( NOK) was downgraded at Societe Generale from Hold to Sell. Business is likely to deteriorate further, Societe Generale said. Post Properties ( PPS) was downgraded at UBS to Neutral from Buy. $49 price target. Growth is peaking, as is sentiment, UBS said. Republic Services ( RSG) was downgraded at Wedbush from Outperform to Neutral. $29 price target. Pricing will likely become more competitive, in order to maintain volume growth, Wedbush said. Splunk ( SPLK) was initiated with a rated new Neutral rating at UBS. $33 price target. Valuation attracts attention and high expectations, UBS said. Splunk was initiated with an Equal-Weight rating at Morgan Stanley. Valuation call, Morgan Stanley said. Splunk was initiated with an Outperform rating at Credit Suisse. $40 price target. Company has a disruptive technology and massive market opportunity, Credit Suisse said. Symantec ( SYMC) was downgraded at Goldman Sachs from Neutral to Sell. Company will likely generate less free cash flow in the coming quarters, Goldman said. $14 price target.