EcoR1 Capital as of March 31, 2026
Portfolio Holdings for EcoR1 Capital
EcoR1 Capital holds 29 positions in its portfolio as reported in the March 2026 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price |
|---|---|---|---|---|---|
| Zymeworks Del (ZYME) | 24.4 | $575M | 23M | 25.04 | |
| Anaptysbio Inc Common (ANAB) | 18.5 | $437M | 7.9M | 55.46 | |
| Jazz Pharmaceuticals Shs Usd (JAZZ) | 13.7 | $323M | 1.7M | 189.05 | |
| Centessa Pharmaceuticals Sponsored Ads (CNTA) | 10.8 | $255M | 6.4M | 39.72 | |
| Crinetics Pharmaceuticals In (CRNX) | 6.6 | $156M | 4.3M | 36.32 | |
| Aktis Oncology Com Added | 3.7 | $86M | 4.8M | 17.89 | |
| Oric Pharmaceuticals (ORIC) | 3.6 | $85M | 6.7M | 12.67 | |
| Cg Oncology (CGON) | 3.2 | $75M | 1.1M | 67.68 | |
| Crispr Therapeutics Namen Akt (CRSP) | 2.8 | $66M | 1.4M | 47.57 | |
| Eton Pharmaceuticals (ETON) | 2.3 | $54M | 2.2M | 24.68 | |
| Galapagos Nv Spon Adr (GLPG) | 2.1 | $50M | 1.7M | 30.00 | |
| Xencor (XNCR) | 1.1 | $26M | 2.2M | 12.06 | |
| Neurogene (NGNE) | 1.1 | $26M | 1.3M | 20.16 | |
| Bridgebio Oncology Therapeut Com New (BBOT) | 1.1 | $25M | 2.8M | 8.95 | |
| Mbx Biosciences (MBX) | 1.0 | $23M | 777k | 29.85 | |
| Relay Therapeutics (RLAY) | 0.8 | $19M | 1.9M | 9.95 | |
| Zenas Biopharma (ZBIO) | 0.7 | $15M | 790k | 19.55 | |
| Erasca (ERAS) | 0.6 | $15M | 900k | 16.18 | |
| Eikon Therapeutics Com Added | 0.3 | $7.8M | 733k | 10.58 | |
| Replimune Group (REPL) | 0.3 | $7.7M | 1.0M | 7.65 | |
| Zura Bio Class A Ord Shs (ZURA) | 0.3 | $7.0M | 1.2M | 5.95 | |
| Phathom Pharmaceuticals (PHAT) | 0.3 | $6.9M | 625k | 11.11 | |
| Mereo Biopharma Group Spon Ads (MREO) | 0.2 | $4.4M | 13M | 0.33 | |
| Stoke Therapeutics (STOK) | 0.1 | $3.3M | 100k | 32.56 | |
| Prelude Therapeutics (PRLD) | 0.1 | $3.2M | 947k | 3.42 | |
| Ibio Com New (IBIO) | 0.1 | $3.0M | 1.6M | 1.90 | |
| Helix Acquisition Corp Iii Usd Cl A Ord Shs Added | 0.1 | $2.0M | 200k | 10.16 | |
| Atara Biotherapeutics Com New (ATRA) | 0.0 | $471k | 100k | 4.73 | |
| Surrozen *w Exp 08/01/203 (SRZNW) | 0.0 | $130k | 4.4k | 29.13 |
