This story was originally published on Restaurant Dive. To receive daily news and insights, subscribe to our free daily Restaurant Dive newsletter. Dive Brief: Denny’s shareholder and activist investor JCP Investment Management has acquired 7.8% of the brand’s shares, increasing its stake in the company to over 9%, according to a Tuesday filing with the U.S. Securities and Exchange Commission. The investor said it intends to discuss with the board of directors about “opportunities to enhance sharehold ...