EcoR1 Capital as of June 30, 2026
Portfolio Holdings for EcoR1 Capital
EcoR1 Capital holds 31 positions in its portfolio as reported in the June 2026 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price |
|---|---|---|---|---|---|
| Zymeworks Del (ZYME) | 29.2 | $600M | 23M | 26.14 | |
| Anaptysbio Inc Common (ANAB) | 25.9 | $532M | 7.9M | 67.50 | |
| Aktis Oncology (AKTS) | 7.6 | $156M | 4.8M | 32.23 | |
| Cg Oncology (CGON) | 7.1 | $146M | 2.1M | 71.05 | |
| Eton Pharmaceuticals (ETON) | 3.8 | $79M | 2.2M | 36.20 | |
| Crispr Therapeutics Namen Akt (CRSP) | 3.7 | $76M | 1.4M | 54.54 | |
| Oric Pharmaceuticals (ORIC) | 3.5 | $73M | 6.7M | 10.83 | |
| First Tracks Biotherapeutics Ord Shs Added (TRAX) | 3.1 | $64M | 3.2M | 20.12 | |
| Lakefront Biotherapeutics Nv Spon Adr | 2.4 | $50M | 1.7M | 29.98 | |
| Neurogene (NGNE) | 1.9 | $40M | 1.3M | 31.45 | |
| Stoke Therapeutics (STOK) | 1.2 | $24M | 735k | 32.72 | |
| Fulcrum Therapeutics (FULC) | 1.2 | $24M | 6.5M | 3.66 | |
| Legend Biotech Corp Sponsored Ads (LEGN) | 1.1 | $23M | 800k | 28.88 | |
| Bridgebio Oncology Therapeut Com New (BBOT) | 1.0 | $22M | 2.8M | 7.62 | |
| Mbx Biosciences (MBX) | 1.0 | $21M | 389k | 55.20 | |
| Zenas Biopharma (ZBIO) | 1.0 | $20M | 790k | 25.38 | |
| Atara Biotherapeutics Com New (ATRA) | 0.9 | $18M | 1.6M | 11.48 | |
| Relay Therapeutics (RLAY) | 0.6 | $13M | 698k | 18.71 | |
| Aura Biosciences (AURA) | 0.6 | $12M | 1.7M | 7.10 | |
| Odyssey Therapeutics Common Stock Added | 0.5 | $10M | 556k | 18.71 | |
| Eikon Therapeutics (EIKN) | 0.5 | $9.6M | 733k | 13.05 | |
| Pharvaris N V (PHVS) | 0.4 | $8.1M | 235k | 34.58 | |
| Zura Bio Class A Ord Shs (ZURA) | 0.3 | $7.0M | 1.2M | 5.90 | |
| Phathom Pharmaceuticals (PHAT) | 0.3 | $6.8M | 625k | 10.85 | |
| Nurix Therapeutics (NRIX) | 0.3 | $6.6M | 270k | 24.26 | |
| Erasca (ERAS) | 0.3 | $6.0M | 330k | 18.32 | |
| Eloxx Pharmaceuticals Com New Added | 0.3 | $5.6M | 400k | 13.88 | |
| Aardvark Therapeutics (AARD) | 0.1 | $2.4M | 411k | 5.76 | |
| Helix Acquisition Corp Iii Usd Cl A Ord Shs (HLXC) | 0.1 | $2.1M | 200k | 10.64 | |
| Mereo Biopharma Group Spon Ads (MREO) | 0.0 | $318k | 1.0M | 0.32 | |
| Surrozen *w Exp 08/01/203 (SRZNW) | 0.0 | $115k | 4.4k | 25.95 |
