NEW YORK ( TheStreet) -- CHANGE IN RATINGS:Amazon.com ( AMZN) was upgraded at Pacific Crest to outperform. $346 price target. Company can continue to gain market share, Pacific Crest said. Armstrong World Industries ( AWI) was initiated with a neutral rating at Citigroup. $60 price target. Shares fully valued, Citi said. Ball Corporation ( BLL) was downgraded at Jefferies to hold from buy. $49 price target. Valuation call, Jefferies said. Caterpillar ( CAT) was upgraded at Piper Jaffray from neutral to overweight. China inventory is coming down and the mining outlook is improving, Piper Jaffray said. $113 price target. Celestica ( CLS) was upgraded to buy at TheStreet Ratings. Cornerstone OnDemand ( CSOD) was upgraded at Goldman Sachs from neutral to buy. $40 price target. Company can exceed near-term earnings expectations, Goldman said. CSX ( CSX) was downgraded at Credit Suisse from outperform to neutral. $22 price target. Estimates were also cut, given lower export coal pricing, Credit Suisse said. Expeditors ( EXPD) was upgraded at Credit Suisse from neutral to outperform. $50 price target. Macro environment is improving and productivity is near an inflection point, Credit Suisse said. Las Vegas Sands ( LVS) was upgraded at Wells Fargo from market perform to outperform. Company is leveraged to higher growth in Macau, Wells Fargo said. Masco ( MAS) was upgraded at Credit Suisse from neutral to outperform. $22 price target. Company is leveraged to an increase in remodeling activity, Credit Suisse said. Netsuite ( N) was downgraded at Goldman Sachs from buy to neutral. Company was also cut from the Conviction List, Goldman said. Valuation call, based on a $75 price target. Qlik Technologies ( QLIK) was upgraded at Goldman Sachs to buy from neutral. $27 price target. Next generation business intelligence will be a key 2013 theme, Goldman said. Research In Motion ( RIMM) was upgraded at Jefferies to buy from hold. $19.50 price target. RIM will enable corporate email on iPhones and Android, Jefferies said. Stifel Financial ( SF) was upgraded to buy at TheStreet Ratings. Tyson Foods ( TSN) was upgraded at BMO Capital Markets to outperform from market perform. $27 price target. Structural change in beef, BMO Capital Markets said. Ultimate Software ( ULTI) was downgraded at Goldman Sachs from buy to neutral. Valuation call, based on a $105 price target, Goldman said.