Potbelly Corp. (NASDAQ:PBPB), the hot-sandwich seller that went public nine months ago, dropped the most since its October initial public offering after its annual profit forecast and quarterly sales trailed analysts’ estimates. Potbelly Corp (NASDAQ:PBPB) stock performance was -25.12% in last session and finished the day at $10.97. Traded volume was 7.27million shares in the last session and the average volume of the stock remained … Continue reading Top Losers: Potbelly (NASDAQ:PBPB), Net Element International (NASDAQ:NETE), Lumber Liquidators (NYSE:LL), Ocera Therapeutics Inc (NASDAQ:OCRX)