Top Losers

The Ensign Group (NASDAQ: ENSG) tumbled 41.85% to $27.64 after the company announced the completion of spin-off of CareTrust REIT and acquired two skilled nursing facilities in Colorado and Washington. Quiksilver (NYSE: ZQK) shares dropped 39.98% to $3.48 after the company posted a loss in the...

Quiksilver (NYSE: ZQK) dipped 38% to $3.59 in pre-market trading after the company posted a loss in the fiscal second quarter and issued a weak forecast. Quiksilver posted an adjusted loss of $0.15 per share on revenue of $408 million. However, analysts were expecting a loss of $0.02 per share on...

Puma Biotechnology (NYSE: PBYI) shares declined 18.47% to $62.31 after the company presented positive PB272 Phase II data at ASCO. MasTec (NYSE: MTZ) shares dropped 11.47% to $31.99 following Sunday's report of weak outlook. Universal Electronics (NASDAQ: UEIC) declined 8.49% to $41.62. B Riley...

National Oilwell Varco (NYSE: NOV) shares fell 9.14% to $74.39 in pre-market trading after the company reported the closing of spinoff of Now. The company also announced the resignation of Miller Jr. as Executive Chairmain and named Clay Williams as replacement. Clovis Oncology (NASDAQ: CLVS)...

Infoblox (NYSE: BLOX) shares fell 32.55% to $13.84 in pre-market trading after the company reported that its CEO Robert Thomas is stepping down. The company also issued a downbeat forecast for the fiscal fourth quarter. Analysts at Deutsche Bank downgraded Infoblox from Buy to Hold and lowered the...

Spherix (NASDAQ: SPEX) dropped 37.57% to $2.16 after jumping 16.50% on Wednesday. Spherix announced a $20 million registered direct offering of preferred stock. Tilly's (NYSE: TLYS) shares fell 20.20% to $8.44 after the company reported its Q1 earnings of $0.02 per share on revenue of $111.10...

Air Industries Group (NYSE: AIRI) dipped 4.55% to $10.29 in pre-market trading after the company announced a 1.17 million share sale in a direct offering for $9 per share. FuelCell Energy (NASDAQ: FCEL) dropped 2.46% to $2.38 in pre-market trading after rising 9.42% on Wednesday. SolarCity (...

DSW (NYSE: DSW) shares tumbled 25.58% to $24.20 after the company reported weaker-than-expected fiscal first-quarter results and lowered its full-year earnings forecast. Acura Pharmaceuticals (NASDAQ: ACUR) shares fell 16.67% to $1.05 after the company provided an update on AP-ADF-301. MLV &...

DSW (NYSE: DSW) dropped 19.31% to $26.24 in pre-market trading after the company reported weaker-than-expected fiscal first-quarter results and lowered its full-year earnings forecast. Sungy Mobile (NASDAQ: GOMO) dipped 11.23% to $12.41 in pre-market trading on Q1 results. Sungy Mobile's quarterly...

Eltek (NASDAQ: ELTK) shares declined 11.77% to $1.35 after the company reported a Q1 loss of $0.02 per share on revenue of $12.30 million. Frontline (NYSE: FRO) shares slipped 11.19% to $2.54 as the company reported its Q1 adjusted earnings of $0.04 per share. The company also expected weaker...

Durata Therapeutics (NASDAQ: DRTX) dipped 11.19% to $15.00 in pre-market trading. Durata Therapeutics confirmed the FDA approval of Dalvance to treat skin infections. JinkoSolar Holding Co (NYSE: JKS) shares fell 9.13% to $23.50 in pre-market trading after the company reported weaker-than-expected...

Aruba Networks, Inc. (NASDAQ: ARUN) shares fell 11.02% to $17.85 in pre-market trading. Aruba Networks reported FQ3 earnings of $0.20 per share on revenue of $188.8 million. However, analysts were expecting earnings of $0.20 per share on revenue of $180.8 million. Yandex N.V. (NASDAQ: YNDX)...

China Precision Steel (NASDAQ: CPSL) dipped 25.37% to $1.22 after the company announced delisting from the NASDAQ. Westell Technologies (NASDAQ: WSTL) dipped 14.75% to $2.60 after the company reported a Q4 loss of $0.02 per share. Weibo (NASDAQ: WB) shares fell 9.88% to $18.25 as the company's...

NewLead Holdings (NASDAQ: NEWL) dipped 7.05% to $4.09 in pre-market trading after jumping 32.93% on Wednesday. Weibo (NASDAQ: WB) dropped 6.91% to $18.85 in pre-market trading as the company's first-quarter bottom-line figure beat but guidance looked light. Best Buy Co (NYSE: BBY) shares dropped...

Methes Energies International (NASDAQ: MEIL) shares fell 29.23% to $2.01 after the company announced the pricing of public offering of common stock. Rio Alto Mining (NYSE: RIOM) declined 12.24% to $1.72 after the company and Sulliden agreed to combine their respective businesses. 1347 Property...