Potbelly (PBPB) began trading on the NASDAQ on 4 October 2013

• Potbelly Corp. shares more than doubled as they debuted this morning.
• The Chicago-based sandwich restaurant chain began trading on the Nasdaq at $14, but the stock was up 136 percent at $32.94 in midday trading.
  

  ticker: PBPB

Executives at the company, known for its Wreck and Hammie sandwiches, were optimistic about the initial public offering. They raised the opening price to $13 earlier this week and then to $14 before trading beganafter an original range of $9 to $11.

Potbelly raised $97.5 million by releasing 75 million shares into the market under the symbol PBPB.