Gainers Loxo Oncology Inc (NASDAQ: LOXO) rose 32.7 percent to $65.00 in pre-market trading after the company reported that larotrectinib trial demonstrated 76 percent confirmed objective response rate. Dynavax Technologies Corporation (NASDAQ: DVAX) shares rose 22 percent to $7.20 in the pre-market trading session after the company on Friday presented updated data for SD-101 in combination with KEYTRUDA. Puma Biotechnology Inc (NASDAQ: PBYI) rose 21.7 percent to $99.75 in pre-market trading as the company disclosed positive PB272 Phase 2 data from TBCRC 022 trial at ASCO17. Helios and Matheson Analytics Inc (NASDAQ: HMNY) shares rose 20.7 percent to $3.21 in pre-market trading after the company reported that RedZone has acquired all the assets of Trendit including three technology patents. Forestar Group Inc. (NYSE: FOR) rose 13.1 percent to $16.05 in pre-market trading after D.R. Horton, Inc. (NYSE: DHI) proposed to buy 75 percent of Forestar Group for $16.25 per share in cash. TG Therapeutics Inc (NASDAQ: TGTX) shares rose 12 percent to $15.50 in pre-market trading after the company said Phase 3 GENUINE trial met primary endpoint with TG-1101 + ibrutinib increasing overall response rate by >70 percent versuss ibrutinib alone. Gigamon Inc (NYSE: GIMO) gained 10.8 percent to $43.55. Reuters reported that Gigamon is exploring a potential sale. BioCryst Pharmaceuticals, Inc. (NASDAQ: BCRX) rose 8.7 percent to $6.00 in pre-market trading after the company announced Rapivab pediatric sNDA acceptance by the FDA. Array Biopharma Inc (NASDAQ: ARRY) rose 7.2 percent to $8.77 in pre-market trading after gaining 5.68 percent on Friday. Ehi Car Services Ltd (ADR) (NYSE: EHIC) shares rose 6.4 percent to $10.76 in pre-market trading. eHi Car Services posted Q1 earnings of $0.06 on sales of $89.43 million. Skyworks Solutions Inc (NASDAQ: SWKS) rose 5.9 percent to $114.79 in pre-market trading after gaining 0.69 percent on Friday. Sorl Auto Parts, Inc. (NASDAQ: SORL) shares rose 3.9 percent to $9.18 in pre-market trading after dropping 1.23 percent on Friday. Jumei International Holding Ltd(ADR) (NYSE: JMEI) rose 3.3 percent to $2.80 in pre-market trading after falling 3.90 percent on Friday. Helix Energy Solutions Group Inc (NYSE: HLX) rose 3.1 percent to $5.05 in pre-market trading. Cowen & Co. upgraded Helix Energy from Market Perform to Outperform.
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Losers Insys Therapeutics Inc (NASDAQ: INSY) fell 10.4 percent to $12.61 in pre-market trading as the company issued a statement on negative media reports. AlarmCom Hldg Inc (NASDAQ: ALRM) fell 9.8 percent to $30.51 in pre-market trading after rising 1.17 percent on Friday. Herbalife Ltd. (NYSE: HLF) shares fell 5.5 percent to $69.85 in the pre-market trading session after the company cut its sales forecast for the current quarter. Herbalife expects Q2 revenue to decline by 6 percent to 2 percent, and adjusted earnings of $0.95 to $1.15 per share. SINA Corp (NASDAQ: SINA) fell 5.2 percent to $91.50 in pre-market trading after slipping 1.14 percent on Friday. CGG SA (ADR) (NYSE: CGG) fell 5.1 percent to $6.48 in pre-market trading after climbing 25.78 percent on Friday. Calithera Biosciences Inc (NASDAQ: CALA) fell 4.5 percent to $15 in pre-market trading as the company disclosed that its CB-1158 (INCB01158) Phase I solid tumor data will be presented at the American Society of Clinical Oncology Annual Meeting. JinkoSolar Holding Co., Ltd. (NYSE: JKS) shares fell 3.6 percent to $18.10 in pre-market trading after the company reported weaker-than-expected earnings for its first quarter. AmTrust Financial Services Inc (NASDAQ: AFSI) shares fell 3.6 percent to $13.03 in pre-market trading after dropping 3.70 percent on Friday. Perrigo Company plc (NYSE: PRGO) fell 3.3 percent to $71.00 in pre-market trading. RBC Capital downgraded Perrigo from Sector Perform to Underperform. Kamada Ltd (NASDAQ: KMDA) fell 3.1 percent to $7.80 in pre-market trading. Kamada named Michal Stein, M.D., as Vice President and Medical Director for Immunology. Cliffs Natural Resources Inc (NYSE: CLF) fell 3 percent to $5.52 in pre-market trading after declining 3.40 percent on Friday.