Engaged Capital has acquired a nearly 10% activist stake in Del Frisco's Restaurant (NASDAQ:DFRG) and plans to push the company to sell itself, WSJ reports. The hedge fund believes DFRG is poorly managing its restaurants and rushed into buying two faster growing chains to avoid being acquired, and it wants the steakhouse chain operator to add new directors and form a strategic review committee to consider selling its various brands, according to the report.