Gainers

  • Vicor CorporationVICR rose 19.7 percent to $35 in pre-market trading. Vicor posted Q1 earnings of $0.10 per share on sales of $65.2 million.
  • Check-Cap Ltd.CHEK shares rose 13.5 percent to $16.88 in pre-market trading after climbing 104.82 percent on Tuesday.
  • Cree, Inc.CREE shares rose 11.3 percent to $43.81 in pre-market trading as the company reported upbeat results for its third quarter on Tuesday.
  • The Clorox Company CLXrose 9.6 percent to $125.98 in pre-market trading.
  • Aduro BioTech, Inc.ADRO rose 5.8 percent to $7.25 in pre-market trading after falling 1.44 percent on Tuesday.
  • STMicroelectronics N.V.STM rose 5.2 percent to $22.42 in pre-market trading after reporting Q1 results.
  • Twitter, Inc.TWTR rose 5.2 percent to $32.05 in pre-market trading as the company reported stronger-than-expected results for its first quarter on Wednesday.
  • Credit Suisse Group AG CSrose 5 percent to $17.11 in pre-market trading following strong Q1 results.
  • Harmony Gold Mining Company Limited HMYshares rose 4.4 percent to $2.02 in pre-market trading.
  • 22nd Century Group, Inc.XXII rose 4.9 percent to $2.15 in pre-market trading after dropping 8.07 percent on Tuesday.
  • Texas Instruments Incorporated TXNrose 4.1 percent to $102.40 in pre-market trading after the company reported stronger-than-expected earnings for its first quarter on Tuesday.
  • iRobot Corporation IRBTrose 3.3 percent to $61 in pre-market trading following upbeat quarterly earnings.