Top Losers

Great Basin Scientific Inc (NASDAQ: GBSN) shares dipped 22.84 percent to $1.25 after falling 22.49 percent on Tuesday. Micron Technology, Inc. (NASDAQ: MU) shares dipped 7.26 percent to $13.55 in pre-market trading. Micron reported upbeat earnings for its fiscal first quarter, but the company's...

NetApp Inc. (NASDAQ: NTAP) shares dipped 5.72 percent to $26.02. NetApp announced plans to acquire SolidFire for $870 million in cash. RBC Capital downgraded NetApp from Outperform to Sector Perform. Select Comfort Corp. (NASDAQ: SCSS) shares dipped 3.62 percent to $20.50 in pre-market trading....

Targa Resources Partners LP (NYSE: NGLS) shares dipped 8.62 percent to $14.00. Credit Suisse downgraded Targa Resources Partners from Outperform to Underperform and lowered the price target from $49.00 to $22.00. GoPro Inc (NASDAQ: GPRO) shares dipped 2.51 percent to $19.01 in pre-market trading...

KaloBios Pharmaceuticals Inc (NASDAQ: KBIO) shares dipped 53.24 percent to $11.03 in pre-market trading. Turing Pharmaceuticals founder Martin Shkreli has been arrested on securities fraud related to a firm he founded, Bloomberg reported Thursday morning. Pier 1 Imports Inc (NYSE: PIR) shares...

Global Payments Inc (NYSE: GPN) shares dipped 5.70 percent to $67.36 in pre-market trading after the company agreed to acquire Heartland Payment Systems, Inc. (NYSE: HPY) for $100.00 per share, or $4.3 billion. Spark Therapeutics Inc (NASDAQ: ONCE) shares declined 2.68 percent to $47.25 after...

Neothetics Inc (NASDAQ: NEOT) shares dipped 76.16 percent to $1.70 in pre-market trading after the company reported Monday that its LIPO-202 top-line Phase 3 trial did not meet co-primary composite and secondary endpoints. Kennametal Inc. (NYSE: KMT) shares dipped 18.26 percent to $20.90 after...

Atara Biotherapeutics Inc (NASDAQ: ATRA) shares dipped 37.38 percent to $20.79 after the company reported results from its Phase 2 proof-of-concept PINTA 745 clinical trial for protein energy wasting in patients with end stage renal disease. GoPro Inc (NASDAQ: GPRO) fell 5.43 percent to $18.11...

United Development Funding IV (NASDAQ: UDF) shares dipped 14.80 percent to $9.50 following release responding to market rumors: Fund is 'trying to unlawfully profit by manipulating, depressing price...' Ariad Pharmaceuticals, Inc. (NASDAQ: ARIA) fell 6.94 percent to $5.90 in pre-market trading...

AIXTRON SE (ADR) (NASDAQ: AIXG) fell 30.56 percent to $4.50 in pre-market trading after tumbling 14.00 percent on Wednesday. Men's Wearhouse Inc (NYSE: MW) shares dipped 20.03 percent to $14.85. Men's Wearhouse reported in-line loss for the third quarter, but the company's revenue missed...

AEterna Zentaris Inc. (USA) (NASDAQ: AEZS) shares dipped 25.35 percent to $5.30 after the company reported the pricing of public offering of common shares and warrants. Oncothyreon Inc (USA) (NASDAQ: ONTY) fell 23.96 percent to $2.38 in pre-market trading after the company after the release of...

Gevo, Inc. (NASDAQ: GEVO) shares declined 31.19 percent to $0.860 after the company reported the pricing of $10 million offering of common shares and warrants. Foresight Energy LP (NYSE: FELP) shares dipped 30.67 percent to $2.08 after the company issued an update on bondholder litigation....

Outerwall Inc (NASDAQ: OUTR) fell 22.29 percent to $45.12 in pre-market trading after the company lowered its FY15 forecast. United Natural Foods, Inc. (NASDAQ: UNFI) shares fell 11.42 percent to $39.00 in pre-market trading after the company reported weaker-than-expected earnings for its...

Threshold Pharmaceuticals, Inc. (NASDAQ: THLD) shares tumbled 80.75 percent to $0.643 after the company reported that its evofosfamide studies did not meet primary endpoints. bluebird bio Inc (NASDAQ: BLUE) shares dipped 30.61 percent to $58.05 on mixed sickle cell data results presented at the...

bluebird bio Inc (NASDAQ: BLUE) fell 31.02 percent to $57.71 in pre-market trading on mixed sickle cell data results presented at the ASH 2015. Global Blood Therapeutics Inc (NASDAQ: GBT) shares tumbled 12.42 percent to $40.00 in pre-market trading after the company reported positive GBT440 Phase...

Zumiez Inc. (NASDAQ: ZUMZ) fell 16.55 percent to $11.60 in pre-market trading after the company issued a weak forecast. Cooper Companies Inc (NYSE: COO) shares dipped 12 percent to $125.00 in pre-market trading after the company reported weaker-than-expected results for the fourth quarter and...