13F HOLDINGS REPORT
EcoR1 Capital, LLC
Quarter ended Q1 2025 · Filed May 15, 2025 · Accession 0000935836-25-000338
Total Value
$1.69B
Positions
46
Other Managers
0
Confidential Omitted
No
Holdings (46)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | APELLIS PHARMACEUTICALS INC | APLS | 11,895,808 | $260.2M | 15.43% |
| 2 | JAZZ PHARMACEUTICALS PLC | JAZZ | 1,706,469 | $211.9M | 12.57% |
| 3 | ZYMEWORKS INC | ZYME | 17,259,548 | $205.6M | 12.19% |
| 4 | ANAPTYSBIO INC | ANABV | 7,880,094 | $146.5M | 8.69% |
| 5 | CRINETICS PHARMACEUTICALS IN | CRNX | 4,288,120 | $143.8M | 8.53% |
| 6 | PROTHENA CORP PLC | PRTA | 11,584,280 | $143.4M | 8.50% |
| 7 | SAREPTA THERAPEUTICS INC | SRPT | 1,292,386 | $82.5M | 4.89% |
| 8 | XENCOR INC | XNCR | 6,144,767 | $65.4M | 3.88% |
| 9 | CRISPR THERAPEUTICS AG | CRSP | 1,389,276 | $47.3M | 2.80% |
| 10 | UNIQURE NV | QURE | 3,988,971 | $42.3M | 2.51% |
| 11 | JANUX THERAPEUTICS INC | JANX | 1,469,818 | $39.7M | 2.35% |
| 12 | IMMUNOME INC | IMNM | 4,079,415 | $27.5M | 1.63% |
| 13 | ETON PHARMACEUTICALS INC | ETON | 1,939,288 | $25.2M | 1.49% |
| 14 | MADRIGAL PHARMACEUTICALS INC | MDGL | 75,000 | $24.8M | 1.47% |
| 15 | ORIC PHARMACEUTICALS INC | ORIC | 3,418,068 | $19.1M | 1.13% |
| 16 | AKERO THERAPEUTICS INC | 00973Y108 | 440,000 | $17.8M | 1.06% |
| 17 | KURA ONCOLOGY INC | KURA | 2,640,298 | $17.4M | 1.03% |
| 18 | TECTONIC THERAPEUTIC INC | TECX | 935,121 | $16.6M | 0.98% |
| 19 | AVIDITY BIOSCIENCES INC | 05370A108 | 557,576 | $16.5M | 0.98% |
| 20 | NEUROGENE INC | NGNE | 1,271,342 | $14.9M | 0.88% |
| 21 | TANGO THERAPEUTICS INC | TNGX | 10,630,736 | $14.6M | 0.86% |
| 22 | VOYAGER THERAPEUTICS INC | VYGR | 3,917,546 | $13.2M | 0.79% |
| 23 | BEAM THERAPEUTICS INC | BEAM | 526,685 | $10.3M | 0.61% |
| 24 | MBX BIOSCIENCES INC | MBX | 1,259,273 | $9.3M | 0.55% |
| 25 | GINKGO BIOWORKS HOLDINGS INC | DNABW | 1,462,328 | $8.3M | 0.49% |
| 26 | REPLIMUNE GROUP INC | REPL | 850,341 | $8.3M | 0.49% |
| 27 | BICYCLE THERAPEUTICS PLC | BCYC | 910,000 | $7.7M | 0.46% |
| 28 | DAY ONE BIOPHARMACEUTICALS I | DAWN | 862,068 | $6.8M | 0.41% |
| 29 | VERVE THERAPEUTICS INC | 92539P101 | 1,250,000 | $5.7M | 0.34% |
| 30 | ADAPTIMMUNE THERAPEUTICS PLC | ADTI | 27,404,070 | $5.4M | 0.32% |
| 31 | GALAPAGOS NV | GLPGF | 155,006 | $3.9M | 0.23% |
| 32 | WHITEHAWK THERAPEUTICS INC | WHWK | 2,082,000 | $3.7M | 0.22% |
| 33 | ATARA BIOTHERAPEUTICS INC | ATRA | 573,183 | $3.4M | 0.20% |
| 34 | SOLID BIOSCIENCES INC | SLDB | 744,450 | $2.8M | 0.16% |
| 35 | KEROS THERAPEUTICS INC | KROS | 187,500 | $1.9M | 0.11% |
| 36 | NUVATION BIO INC | NUVB | 963,333 | $1.7M | 0.10% |
| 37 | RELAY THERAPEUTICS INC | RLAY | 641,426 | $1.7M | 0.10% |
| 38 | KALARIS THERAPEUTICS INC | KLRS | 201,718 | $1.6M | 0.10% |
| 39 | UNIQURE NV | QURE | 135,000 | $1.4M | 0.08% |
| 40 | PRIME MEDICINE INC | PRME | 700,000 | $1.4M | 0.08% |
| 41 | METSERA INC | 59267L107 | 50,000 | $1.4M | 0.08% |
| 42 | TSCAN THERAPEUTICS INC | TCRX | 662,833 | $914,710 | 0.05% |
| 43 | SURROZEN INC | SRZNW | 66,665 | $777,314 | 0.05% |
| 44 | ALIGOS THERAPEUTICS INC | ALGS | 88,569 | $730,694 | 0.04% |
| 45 | ETON PHARMACEUTICALS INC | ETON | 50,500 | $655,490 | 0.04% |
| 46 | UPSTREAM BIO INC | UPB | 60,000 | $367,200 | 0.02% |