NEW YORK ( TheStreet) -- CHANGE IN RATINGS Cabot ( CBT) upgraded at Jefferies to Buy from Hold, Jefferies said. $50 price target. Favorable EPS revisions and structural change at a discount. Carbo Ceramics ( CRR) upgraded at Morgan Stanley from Underweight to Equal-weight, Morgan Stanley said. $125 price target. Channel checks suggest that demand concerns are overblown. Fidelity Bancorp ( FSBI) downgraded to sell at TheStreet Ratings. Lowe's ( LOW) upgraded at Nomura from Neutral to Buy, Nomura said. $40 price target. Estimates also boosted, as the company is cutting costs. Soutwest Airlines ( LUV) downgraded at BofA/Merrill Lynch to Neutral, Bank of America/Merrill Lynch said. $9 price target. Sales growth could lag peers through the Spring. Allscripts ( MDRX) rated new Outperform at Credit Suisse. Company continues to expand its product portfolio. $23 price target. MarineMax ( HZO) downgraded to sell at TheStreet Ratings. Nike ( NKE) downgraded at McAdams from Hold to Sell, McAdams Wright Ragen said. Valuation call. Oracle ( ORCL) downgraded at Jefferies to Hold from Buy, Jefferies said. $32 price target. Increasing challenges to growth. Hold rating. Quality Systems ( QSII) rated new Neutral at Credit Suisse. Valuation call, based on a $47 price target. Sherwin Williams ( SHW) rated new Buy at Nomura. $137 price target. A defensible niche coupled with pricing power and convenient stores. Sonoco Products ( SON) downgraded at Goldman from Neutral to Sell, Goldman Sachs said. $31 price target. Company faces earnings headwinds. Theravance ( THRX) rated new Buy at Brean Murray. $24 price target. GSK respiratory franchise should help drive growth. Under Armour ( UA) downgraded at Sterne Agee from Buy to Neutral, Sterne Agee said. Valuation call, as the stock is trading at 32x 2013 earnings. United Continental ( UAL) downgraded at BofA/Merrill to Neutral, Bank of America/Merrill Lynch said. Oil is rising and bookings momentum has stalled. $26 price target.