U.S. stock market opened, uniQure fell 39%, Summit Therapeutics rose 19.2%

According to Gate market data, U.S. stocks opened with the Dow Jones down 0.1%, the S&P 500 index up 0.13%, and the Nasdaq up 0.3%. Biopharmaceutical company uniQure fell 39% due to its Huntington's disease gene therapy's 48-month data not reaching statistical significance.

Summit Therapeutics rose 19.2% after AstraZeneca proposed to invest $2 billion in collaboration to develop cancer drugs.