NuVasive (NUVA) (LNN) (NRG) (PANL) (PWRD) Upgraded

NuVasive (NASDAQ: NUVA), Lindsay Corp. (NYSE: LNN), NRG Energy, Inc. (NYSE: NRG), Universal Display Co. (NASDAQ: PANL) and Perfect World Co. Ltd (NASDAQ: PWRD) upgraded by analysts.

NuVasive (NUVA) was upgraded by Madison Williams from a “Reduce” rating to a “Neutral” rating.

Lindsay Corp. (LNN) was upgraded by Janney Montgomery Scott from a “Neutral” rating to a “Buy” rating.

NRG Energy, Inc. (NRG) was upgraded by UBS AG (NYSE:UBS) from a “Neutral” rating to a “Buy” rating. They have a price target of $26.00 on the company.

Universal Display Co. (PANL) was upgraded by Brigantine from a “Hold” rating to a “Buy” rating. They have a price target of $56.00 on the company.

Perfect World Co. Ltd (PWRD) was upgraded by ThinkEquity from a “Hold” rating to a “Buy” rating.