Potbelly Corp. (NASDAQ:PBPB), the purveyor of hot sandwiches that went public nine months ago, dropped in late trading after its annual profit forecast and quarterly sales trailed analysts’ estimates. Potbelly Corp (NASDAQ:PBPB) stock performance was -2.92% in last session and finished the day at $14.65. Traded volume was 1.28million shares in the last session and the average volume of the stock remained 463.16K shares. Potbelly … Continue reading New Lows: Potbelly Corp (NASDAQ:PBPB), Silicon Image (NASDAQ:SIMG), Portugal Telecom (NYSE:PT), Container Store Group (NYSE:TCS)