EcoR1 Capital, LLC — 13F holdings

EcoR1 Capital, LLC reported 33 holdings worth $2.06B in its 13F filing for Q2 2026, filed August 14, 2026.

Largest positions

  1. ZYME Zymeworks Inc — $600M (29.2%)
  2. ANAB ANAPTYSBIO INC — $532M (25.9%)
  3. AKTS AKTIS ONCOLOGY INC — $155M (7.6%)
  4. CGON CG ONCOLOGY INC — $146M (7.1%)
  5. ETON ETON PHARMACEUTICALS INC — $78.6M (3.8%)
  6. CRSP CRISPR Therapeutics AG — $75.8M (3.7%)
  7. ORIC ORIC PHARMACEUTICALS INC — $72.9M (3.5%)
  8. TRAX FIRST TRACKS BIOTHERAPEUTICS — $63.9M (3.1%)
  9. LKFT GALAPAGOS NV — $50.0M (2.4%)
  10. NGNE NEUROGENE INC — $40.0M (1.9%)