NEW YORK ( TheStreet) -- CHANGE IN RATINGS American River Bankshares ( AMRB) upgraded to buy at TheStreet Ratings. Baker Hughes ( BHI) downgraded at Wells to Market Perform, Wells Fargo said. Estimates also cut, given the company's new guidance. Baldwin & Lyons ( BWINB) upgraded to buy at TheStreet Ratings. BJ's Restaurants ( BJRI) upgraded at Wedbush from Neutral to Outperform, Wedbush said. Same-store sales growth is reaccelerating. $57 price target. Cabela's ( CAB) upgraded at JP Morgan from Underweight to Neutral, JP Morgan said. $41 price target. Company can continue to deliver better earnings growth. Micron ( MU) downgraded at Oppenheimer from Outperform to Perform, Oppenheimer said. Company has limited profit visibility. Polycom ( PLCM) upgraded at UBS from Neutral to Buy, UBS said. Valuation call, based on a $22.50 price target. SAIC ( SAI) upgraded at Jefferies from Hold to Buy, Jefferies said. $16 price target. New management team can turn the business around. SVB Financial ( SIVB) downgraded at Sterne Agee from to Neutral, Sterne Agee said. Valuation call, based on a $65 price target. Safeway ( SWY) downgraded at Credit Suisse from Outperform to Neutral, Credit Suisse said. Company is facing a larger pension liability. $20 price target. Tesla Motors ( TSLA) upgraded at Wunderlich from Hold to Buy, Wunderlich said. $49 price target. Model S production appears to be ahead of schedule. Wabco ( WBC) rated new Neutral at Goldman. Valuation call, based on a $65 price target.