Westlake Chemical (NYSE: WLK) UBS hikes to neutral from sell, price target to $90 from $66 Intl Game Tech (NYSE: IGT) Argus raises to buy from hold, with $20 price target Esco Tech (NYSE: ESE) Needham raises to buy from hold Renasant (NASDAQ: RNST) Wunderlich raises to buy from hold, price target to $25 from $20. LRR Energy L.P. (NYSE: LRE) Robert W. Baird upgrades to outperform from neutral, with $21 price target Trinity Industries (NYSE: TRN) UBS lowers to neutral from buy, raises price target to $41 from $38 Bunge (NYSE: BG) Feltl & Co. lowers to hold from strong buy, price target to $74 from $82 Cypress Sharpridge Investments (NYSE: CYS) Compass Point downgrades to neutral from buy, price target to $13.50 from $14.25 3SBio (NASDAQ: SSRX) Aegis Capital lowers to hold from buy Nuance Communications (NASDAQ: NUAN) Stifel Nicolaus lowers to hold from buy McEwen Mining (NYSE: MUX) Stifel Nicolaus starts at buy with $3.75 price target McDermott (NYSE: MDR) HSBC Securities initiates at neutral with $14 price target AthenaHealth (NASDAQ: ATHN) ISI Group boosts price target to $96 from $80 with neutral rating Tesoro (NYSE: TSO) Imperial Capital hikes price target to $58 from $48 with outperform rating Limited (NYSE: LTD) MKM Partners raises price target to $45 from $37 with neutral rating XL Capital (NYSE: XL) UBS raises price target to $28 from $24 with neutral US Airways (NYSE: LCC) UBS fixes buy rating