Analysts' Actions: BIIB FSLR GOOG LNKD

NEW YORK ( TheStreet) -- CHANGE IN RATINGS

Biogen Idec ( BIIB) was upgraded at Canaccord Genuity to buy. $187 price target. Expect an early launch for TEC, Canaccord Genuity said.

CoreSite Realty ( COR) was upgraded to buy at TheStreet Ratings.

Darden ( DHI) was upgraded at Bank of America/Merrill Lynch to neutral from underperform. $50 price target. Commitment to raise dividend trumps lower guidance, BofA/Merrill said.

DigitalGlobe ( DGI) was upgraded to buy at TheStreet Ratings.

First Cash Financial Services ( FCFS) was downgraded at Jefferies to hold from buy. Downgrading to hold on valuation, Jefferies said.

First Solar ( FSLR) was downgraded at Robert Baird from outperform to neutral. $25 price target. Management has limited near-term visibility, Robert Baird said.

First Solar was downgraded at Bank of America/Merrill Lynch to underperform from buy. $25 price target. Solid results, disappointing outlook.

Google ( GOOG) was upgraded at Bank of America/Merrill Lynch to buy. $920 price target. Expect the company to expand margins in the coming quarters, BofA/Merrill said.

GrafTech International ( GTI) was downgraded at Goldman Sachs to sell from neutral. $5.50 price target. Worsening electrode oversupply structural issue, Goldman said.

Graftech was downgraded at J.P. Morgan to neutral. The company lacks earnings leverage, J.P. Morgan said.

Invensense ( INVN) was downgraded at Robert Baird from outperform to neutral. Valuation call, based on a $13 price target, Baird said.

Lincoln National ( LNC) was upgraded at Bank of America/Merrill Lynch. $34 price target. Company has the lowest multiple in the industry, BofA/Merrill said.

LinkedIn ( LNKD) was initiated with a buy rating at Wunderlich. $195 price target. Company has a large competitive advantage and solid revenue visibility, Wunderlich said.

Allscripts ( MDRX) was upgraded at Credit Suisse from neutral to outperform. $15 price target. New management can stabilize the business, Credit Suisse said.

Norwegian Cruise Line ( NCLH) was initiated with a neutral rating at Goldman Sachs. $28 price target. Best in class, but valuation on an even keel, Goldman said.

Norwegian Cruise ( NCLH) was initiated with an overweight rating at J.P. Morgan. $36 price target. Company can continue to increase price and yields, J.P. Morgan said.

Oceaneering ( OII) was upgraded at Sterne Agee from neutral to buy. $75 price target. Company can generate robust earnings and cash flow over the next several years, Sterne Agee said.

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