StockNews.com upgraded shares of Potbelly (NASDAQ:PBPB – Get Rating) from a buy rating to a strong-buy rating in a research note released on Friday morning. Potbelly Trading Down 4.9 % Shares of PBPB stock opened at $5.43 on Friday. The company has a quick ratio of 0.36, a current ratio of 0.39 and a debt-to-equity […]