UPDATE: Sterne Agee Upgrades Chesapeake Energy on Operational Traction

In a report published on Thursday, Sterne Agee analyst Tim Rezvan upgraded Chesapeake Energy (NYSE: CHK ) from Underperform to Neutral and removed the price target on the company. In the report, Sterne Agee stated, "We upgrade CHK shares to Neutral from Underperform and remove our $20 PT on the