13F HOLDINGS REPORT
EcoR1 Capital, LLC
Quarter ended Q3 2025 · Filed November 14, 2025 · Accession 0000935836-25-000671
Total Value
$2.08B
Positions
30
Other Managers
0
Confidential Omitted
No
Holdings (30)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | ZYMEWORKS INC | ZYME | 22,970,388 | $392.3M | 18.83% |
| 2 | ANAPTYSBIO INC | ANABV | 7,880,094 | $241.3M | 11.58% |
| 3 | UNIQURE NV | QURE | 3,988,971 | $232.8M | 11.17% |
| 4 | JAZZ PHARMACEUTICALS PLC | JAZZ | 1,706,469 | $224.9M | 10.79% |
| 5 | CRINETICS PHARMACEUTICALS IN | CRNX | 4,288,120 | $178.6M | 8.57% |
| 6 | CRISPR THERAPEUTICS AG | CRSP | 1,389,276 | $90.0M | 4.32% |
| 7 | TANGO THERAPEUTICS INC | TNGX | 10,630,736 | $89.3M | 4.29% |
| 8 | ORIC PHARMACEUTICALS INC | ORIC | 6,728,116 | $80.7M | 3.87% |
| 9 | APELLIS PHARMACEUTICALS INC | APLS | 3,447,156 | $78.0M | 3.74% |
| 10 | XENCOR INC | XNCR | 6,144,767 | $72.1M | 3.46% |
| 11 | GALAPAGOS NV | GLPGF | 1,667,119 | $57.7M | 2.77% |
| 12 | IMMUNOME INC | IMNM | 4,079,415 | $47.8M | 2.29% |
| 13 | ETON PHARMACEUTICALS INC | ETON | 2,030,544 | $44.1M | 2.12% |
| 14 | MBX BIOSCIENCES INC | MBX | 2,123,604 | $37.2M | 1.78% |
| 15 | MADRIGAL PHARMACEUTICALS INC | MDGL | 75,000 | $34.4M | 1.65% |
| 16 | AVIDITY BIOSCIENCES INC | 05370A108 | 765,000 | $33.3M | 1.60% |
| 17 | BRIDGEBIO ONCOLOGY THERAPEUT | BBOT | 2,823,126 | $32.7M | 1.57% |
| 18 | NEUROGENE INC | NGNE | 1,271,342 | $22.0M | 1.06% |
| 19 | ALKERMES PLC | ALKS | 500,000 | $15.0M | 0.72% |
| 20 | AQUESTIVE THERAPEUTICS INC | AQST | 2,625,000 | $14.7M | 0.70% |
| 21 | METSERA INC | 59267L107 | 271,529 | $14.2M | 0.68% |
| 22 | CENTESSA PHARMACEUTICALS PLC | CNTA | 550,000 | $13.3M | 0.64% |
| 23 | PRIME MEDICINE INC | PRME | 1,543,326 | $8.6M | 0.41% |
| 24 | ATARA BIOTHERAPEUTICS INC | ATRA | 573,183 | $8.2M | 0.39% |
| 25 | KURA ONCOLOGY INC | KURA | 872,500 | $7.7M | 0.37% |
| 26 | PEPGEN INC | PEPG | 800,000 | $3.7M | 0.18% |
| 27 | NUVATION BIO INC | NUVB | 963,333 | $3.6M | 0.17% |
| 28 | VOYAGER THERAPEUTICS INC | VYGR | 670,303 | $3.1M | 0.15% |
| 29 | COMPASS PATHWAYS PLC | CMPS | 265,137 | $1.5M | 0.07% |
| 30 | SURROZEN INC | SRZNW | 66,665 | $859,312 | 0.04% |