Less than a year after IPO, no fire in the Potbelly By: Reuters: Company News July 15, 2014 at 15:47 PM EDT LOS ANGELES, July 15 (Reuters) - Early investors in Potbelly Corp have seen their shares in the toasted sandwich chain go cold. Read More >> Related Stocks: Chipotle Mexican Grill Crumbs Bake Shop Inc Noodles & Company Potbelly Corp Starbucks Corp The Container Store Group Inc Zoe's Kitchen Inc