Top Losers

Ambassadors Group Inc (NASDAQ: EPAX) shares declined 30.50 percent to $1.67 after the company announced its plans to cease operations and close its student and adult travel business. Learning Tree International, Inc. (NASDAQ: LTRE) slipped 21.87 percent to $1.00. Learning Tree shares will be...

Spirit Airlines Incorporated (NASDAQ: SAVE) shares tumbled 7.62 percent to $58.70 in pre-market trading. Spirit Airlines reported a 25.1 percent rise in its June 2015 traffic and lowered its FY15 outlook. Wells Fargo & Co (NYSE: WFC) shares dropped 1.41 percent to $55.94 in pre-market after...

Ascena Retail Group Inc (NASDAQ: ASNA) shares dipped 13.53 percent to $14.15 after the company lowered its earnings forecast for the full year. MPLX LP (NYSE: MPLX) shares dropped 11.63 percent to $61.02. MPLX LP announced its plans to buy Markwest Energy Partners LP (NYSE: MWE) for around $15.63...

Ascena Retail Group Inc (NASDAQ: ASNA) shares tumbled 11.48 percent to $14.49 in pre-market trading after the company lowered its earnings forecast for the full year. Seagate Technology PLC (NASDAQ: STX) fell 2.61 percent to $44.75 in pre-market trading after the company lowered its Q4 sales...

Eco-Stim Energy Solutions Inc (NASDAQ: ESES) shares dipped 26.40 percent to $4.60 after the company priced its 5.5 million share offering at $4.75 per share. Barracuda Networks Inc (NYSE: CUDA) dropped 19.50 percent to $31.49. Barracuda Networks reported better-than-expected fiscal first-...

Eco-Stim Energy Solutions Inc (NASDAQ: ESES) shares tumbled 27.58 percent to $4.49 in pre-market trading after the company priced its 5.5 million share offering at $4.75 per share. Barracuda Networks Inc (NYSE: CUDA) fell 14.57 percent to $33.42 in pre-market trading. Barracuda Networks...

Aquinox Pharmaceuticals Inc (NASDAQ: AQXP) dipped 63.97 percent to $2.36 after the company reported results from FLAGSHIP trial with AQX-1125 in chronic obstructive pulmonary disease patients with frequent exacerbations failed to demonstrate efficacy in COPD. QLogic Corporation (NASDAQ: QLGC)...

Anthera Pharmaceuticals Inc (NASDAQ: ANTH) fell 7.67 percent to $7.70 in pre-market trading after the company reported a proposed offering of common stock. AIXTRON SE (ADR) (NASDAQ: AIXG) shares declined 7.59 percent to $5.97 in pre-market trading. Kepler Cheuvreux analyst Bernd Laux...

Prima Biomed Ltd. (NASDAQ: PBMD) dipped 16.91 percent to $1.35 following the announcement of s share purchase plan. Sinopec Shanghai Petrochemical Co. (ADR) (NYSE: SHI) shares tumbled 13.61 percent to $33.70. Perficient, Inc. (NASDAQ: PRFT) slipped 13.15 percent to $16.51 after the company...

Baozun Inc (ADR) (NASDAQ: BZUN) fell 5.86 percent to $6.99 in pre-market trading after dipping 22.25 percent on Tuesday. YY Inc (ADR) (NASDAQ: YY) shares declined 5.56 percent to $52.50 in pre-market trading after falling 4.04 percent on Tuesday. JD.Com Inc(ADR) (NASDAQ: JD) shares dropped 4....

Advanced Micro Devices, Inc. (NASDAQ: AMD) shares dipped 15.79 percent to $2.08 after the company lowered its revenue forecast for the second quarter. A Schulman Inc (NASDAQ: SHLM) shares declined 11.20 percent to $37.44 after the company reported downbeat third-quarter results and lowered its...

Advanced Micro Devices, Inc. (NASDAQ: AMD) shares declined 14.57 percent to $2.11 in pre-market trading after the company lowered its revenue forecast for the second quarter. A Schulman Inc (NASDAQ: SHLM) fell 5.48 percent to $39.85 in pre-market trading after the company reported downbeat third...

HORSEHEAD HOLDING CORP. (NASDAQ: ZINC) dropped 25.33 percent to $8.55 after the company issued an update on operations at its Mooresboro, North Carolina zinc production facility. Silicom Ltd. (NASDAQ: SILC) shares declined 23.19 percent to $27.96 after the company updated its second quarter...

Allot Communications Ltd (NASDAQ: ALLT) shares declined 11.06 percent to $6.30 in pre-market trading. Allot Communications issued a weak Q2 and FY revenue guidance. Energy XXI Ltd (NASDAQ: EXXI) shares dropped 8.23 percent to $2.12 in pre-market after falling 7.23 percent on Thursday. Aetna Inc...

Franklin Covey Co. (NYSE: FC) shares fell 12.33 percent to $17.64. Franklin Covey reported FQ3 net income of $1.2 million. Peabody Energy Corporation (NYSE: BTU) shares dropped 7.02 percent to $1.65. Peabody Energy named Amy Schwetz as Chief Financial Officer. Cognizant Technology Solutions...