Pacific Biosciences is trading 7.94% up at $1.22 as biotech shares rally following positive late-stage melanoma cancer-vaccine results from Moderna and Merck.

  • The sector catalyst is lifting broader biotech sentiment.
  • No fresh Pacific Biosciences-specific announcement was identified for August 19, 2026.
  • Its latest major updates were the August 5 CEO transition and second-quarter results.