CHICAGO--(BUSINESS WIRE)--Fitch Ratings has assigned a Long-term Issuer Default Rating of 'B' to Jones Energy Holdings, LLC (JEH), a subsidiary of Jones Energy Inc. (NYSE: JONE). A full list of rating actions follows this release. The Rating Outlook is Stable. KEY RATING DRIVERS Ratings for JEH reflect a competitive full-cycle cost structure, strong hedge positions and defensive hedging philosophy, reasonable credit metrics for the category, and an adequate liquidity profile considering the 201