NRG (NRG) (SLB) (SRE) (CXPO) (EGN) (CVE) (RDS-A) (HES) Ratings, Price Targets

NRG Energy, Inc. (NRG), Schlumberger (SLB), Sempra Energy (SRE), Crimson Exploration (CXPO), Energen (EGN), Cenovus Energy (CVE), Royal Dutch Shell (RDS-A) and Hess (HES) had ratings and price targets on them adjusted by analysts.

Sterne Agee upgraded Schlumberger (SLB) from a "Neutral" rating to a "Buy" rating. $93.00

RBC Capital upgraded Sempra Energy (SRE) from a "Sector Perform" rating to a "Outperform" rating.

Macquarie upgraded NRG Energy, Inc. (NRG) from a "Neutral" rating to an "Outperform" rating.

MLV & Co initiated coverage on Crimson Exploration (CXPO). They have a "Buy" rating and a price target of $5.50 on the company.

Sterne Agee initiated coverage on Energen (EGN). They have a "Buy" rating and a price target of $60.00 on the company.

CIBC upgraded Cenovus Energy (CVE) from a "Sector Perform" rating to a "Outperform" rating.

Tudor Pickering upgraded Royal Dutch Shell (RDS-A) to a "Buy" rating.

Tudor Pickering upgraded Hess (HES) from a "Buy" rating to an "Accumulate" rating.

Icahn Invests Big in Anadarko (NYSE: APC), NRG Energy (NYSE:NRG)

Carl Icahn is back in the energy sector game, as he acquired a large number of shares in Anadarko Petroleum Corp. (NYSE:APC) and NRG Energy (NYSE:NRG), according to a required regulatory filing.

The billionaire investor bought 2.4 million shares of NRG Energy, and 2 million shares of Anadarko Petroleum last quarter.

Since last year in the same quarter, which Icahn had held no stake in energy companies at the time, has added over $900 million shares in several energy firms since then.

This isn't the first time Icahn has shown an interest in Anadarko, as in 2007 and 2008 he acquired a large stake in the company, which generated rumors he was going to shake things up there, as he has at other companies he's invested in in the past.

Anadarko owns a 25 percent stake in the same oil well which BP (NYSE:BP) had battle to contain and has billions in liabilities toward.