Benzinga's Top #PreMarket Losers

TubeMogul, Inc. TUBE shares dropped 21.96% to $14.00 in pre-market after the company reported stronger-than-expected financial results for its fourth quarter, but issued a downbeat revenue outlook for 2015. J. C. Penney Company, Inc. JCP fell 10.96% to $8.12 in pre-market trading. J.C. Penney reported a quarterly loss of $59 million, or $0.19 per share, versus a year-ago profit of $35 million, or $0.11 per share. Excluding certain items, the company broke even during the quarter. However, analysts were expecting a profit of $0.11 per share. Del Frisco's Restaurant Group, Inc. DFRG shares declined 5.81% to $18.00 in pre-market trading after the company reported weaker-than-expected results for the fourth quarter. Potbelly Corporation PBPB shares dropped 5.38% to $13.90 in pre-market trading after the company announced the resignation of CFO Charles Talbot. Goodrich Petroleum Corp. GDP shares fell 3.30% to $4.10 in pre-market trading after the company reported a wider –than-expected loss for the fourth quarter.