Investing in Fast Food Operations In an article profiled by James Altucher, former restaurant analyst, Jason Ader had used his hedge fund, Hayground Cove to file a 13D on the restaurant, Denny’s. It was suggested that many should be thrilled with the savvy investor, Jason Ader filing a 13D on the company. His last batch of a million shares (he now owns 6 million) cost him between $4.52 and $5.83, at that Tuesday, Denny's closing price was $4.02. in Public bookmarkswith analystdennyshaygroundcovehedgeinvestorjamesaltucherjasonaderrestaurantsecfile