Adaptive Biotechnologies is trading at $21.51 (4.7% down) in pre-market after reporting a wider-than-expected GAAP loss per share in its Q2 2026 earnings release.

  • The company reported solid Minimal Residual Disease (MRD) revenue growth and raised its full-year MRD guidance.
  • Pre-market weakness reflects investors digesting a mixed earnings profile, balancing higher losses against a strong topline and improved outlook.