SECTOR COMMENTARYEnergy stocks closed mixed, underperforming the broader markets, which were mostly in the green as the Dow Jones Industrial Average hit a fresh five-year high ahead of President Barack Obama's State of the Union address later this evening.  Refiners underperformed as oil spreads narrowed while drillers were the session leaders.  Shares of Hercules Offshore rallied to a 52-week high after the company reported positive earnings results that exceeded expectations of a loss though several non-reoccurring items made up most of the positive delta.  WTI crude oil gained $0.48 or ...