Q4 2024 · 13F-HR
EcoR1 Capital, LLCholdings as filed
Filed 2025-02-14 · accession 0000935836-25-000164
$2.65B
Reported value
59
Positions
2024-12-31
Period end
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 03753U106 | APLSUSD | APELLIS PHARMACEUTICALS INC | $379.4M | 14.3% | 11,890,843 | Common | SOLE |
| 98985Y108 | ZYME | ZYMEWORKS INC | $220.0M | 8.32% | 15,028,079 | Common | SOLE |
| 22663K107 | CRNX | CRINETICS PHARMACEUTICALS IN | $219.3M | 8.29% | 4,288,120 | Common | SOLE |
| G50871105 | JAZZ | JAZZ PHARMACEUTICALS PLC | $210.2M | 7.95% | 1,706,469 | Common | SOLE |
| G72800108 | PRTA | PROTHENA CORP PLC | $160.4M | 6.07% | 11,584,280 | Common | SOLE |
| 98401F105 | XNCR | XENCOR INC | $141.2M | 5.34% | 6,144,767 | Common | SOLE |
| 717081103 | PFE | PFIZER INC | $132.7M | 5.01% | 5,000,000 | CALL | SOLE |
| 04335A105 | ARVN | ARVINAS INC | $128.9M | 4.87% | 6,726,491 | Common | SOLE |
| 032724106 | ANAB | ANAPTYSBIO INC | $104.2M | 3.94% | 7,873,448 | Common | SOLE |
| 803607100 | SRPT | SAREPTA THERAPEUTICS INC | $93.6M | 3.54% | 770,000 | Common | SOLE |
| 47103J105 | JANX | JANUX THERAPEUTICS INC | $78.7M | 2.98% | 1,469,818 | Common | SOLE |
| N90064101 | QURE | UNIQURE NV | $60.0M | 2.27% | 3,400,000 | Common | SOLE |
| 85205L107 | SWTXUSD | SPRINGWORKS THERAPEUTICS INC | $56.4M | 2.13% | 1,560,000 | Common | SOLE |
| H17182108 | CRSP | CRISPR THERAPEUTICS AG | $54.7M | 2.07% | 1,389,276 | Common | SOLE |
| 45257U108 | IMNM | IMMUNOME INC | $41.2M | 1.56% | 3,879,415 | Common | SOLE |
| 878972108 | TECX | TECTONIC THERAPEUTIC INC | $39.2M | 1.48% | 849,143 | Common | SOLE |
| 87583X109 | TNGX | TANGO THERAPEUTICS INC | $32.8M | 1.24% | 10,630,736 | Common | SOLE |
| 88427A107 | — | THIRD HARMONIC BIO INC | $32.7M | 1.24% | 3,182,444 | Common | SOLE |
| 50127T109 | KURA | KURA ONCOLOGY INC | $31.0M | 1.17% | 3,557,269 | Common | SOLE |
| 64135M105 | NGNE | NEUROGENE INC | $29.1M | 1.10% | 1,271,342 | Common | SOLE |
| 68622P109 | ORIC | ORIC PHARMACEUTICALS INC | $27.6M | 1.04% | 3,418,068 | Common | SOLE |
| 29772L108 | ETON | ETON PHARMACEUTICALS INC | $24.4M | 0.92% | 1,829,603 | Common | SOLE |
| 55287L101 | MBX | MBX BIOSCIENCES INC | $23.2M | 0.88% | 1,259,273 | Common | SOLE |
| 558868105 | MDGL | MADRIGAL PHARMACEUTICALS INC | $23.1M | 0.87% | 75,000 | Common | SOLE |
| 92915B106 | VYGR | VOYAGER THERAPEUTICS INC | $22.2M | 0.84% | 3,917,546 | Common | SOLE |
| 640979100 | NMRA | NEUMORA THERAPEUTICS INC. | $22.0M | 0.83% | 2,071,450 | Common | SOLE |
| 14179K101 | CRGX | CARGO THERAPEUTICS INC | $21.2M | 0.80% | 1,470,000 | Common | SOLE |
| 61559X104 | MLTX | MOONLAKE IMMUNOTHERAPEUTICS | $18.0M | 0.68% | 332,522 | Common | SOLE |
| 37611X209 | DNA | GINKGO BIOWORKS HOLDINGS INC | $17.1M | 0.65% | 1,743,344 | Common | SOLE |
| 05370A108 | RNAGBP | AVIDITY BIOSCIENCES INC | $16.2M | 0.61% | 557,576 | Common | SOLE |
| 59045L106 | — | MERSANA THERAPEUTICS INC | $16.2M | 0.61% | 11,328,000 | Common | SOLE |
| 89854M101 | TCRX | TSCAN THERAPEUTICS INC | $15.2M | 0.57% | 5,000,000 | Common | SOLE |
| 00653A107 | ADAPY | ADAPTIMMUNE THERAPEUTICS PLC | $14.8M | 0.56% | 27,404,070 | Common | SOLE |
| 501575104 | KYMR | KYMERA THERAPEUTICS INC | $14.1M | 0.53% | 350,000 | Common | SOLE |
| 26818M108 | DYN | DYNE THERAPEUTICS INC | $13.1M | 0.49% | 555,644 | Common | SOLE |
| 088786108 | BCYC | BICYCLE THERAPEUTICS PLC | $12.7M | 0.48% | 910,000 | Common | SOLE |
| 04683R106 | AVIR | ATEA PHARMACEUTICALS INC | $11.2M | 0.42% | 3,341,653 | Common | SOLE |
| 23954D109 | DAWNGBX | DAY ONE BIOPHARMACEUTICALS I | $10.9M | 0.41% | 862,068 | Common | SOLE |
| 76029N106 | REPL | REPLIMUNE GROUP INC | $10.3M | 0.39% | 850,341 | Common | SOLE |
| 01626L204 | ALGS | ALIGOS THERAPEUTICS INC | $10.2M | 0.38% | 255,573 | Common | SOLE |
| 046513206 | ATRA | ATARA BIOTHERAPEUTICS INC | $7.1M | 0.27% | 532,134 | Common | SOLE |
| 92539P101 | — | VERVE THERAPEUTICS INC | $7.0M | 0.27% | 1,250,000 | Common | SOLE |
| N90064101 | QURE | UNIQURE NV | $6.8M | 0.26% | 385,000 | CALL | SOLE |
| 31189P102 | FATE | FATE THERAPEUTICS INC | $5.0M | 0.19% | 3,049,405 | Common | SOLE |
| 36315X101 | LKFT | GALAPAGOS NV | $4.3M | 0.16% | 155,006 | Common | SOLE |
| 019818103 | — | ALLOVIR INC | $3.9M | 0.15% | 408,688 | Common | SOLE |
| 492327101 | KROS | KEROS THERAPEUTICS INC | $3.0M | 0.11% | 187,500 | Common | SOLE |
| 75943R102 | RLAY | RELAY THERAPEUTICS INC | $2.6M | 0.10% | 641,426 | Common | SOLE |
| 25056L103 | DSGN | DESIGN THERAPEUTICS INC | $2.6M | 0.10% | 426,683 | Common | SOLE |
| 67080N119 | NUVB/WS | NUVATION BIO INC | $2.6M | 0.10% | 963,333 | Common | SOLE |
| 37148K100 | GBIOGBX | GENERATION BIO CO | $2.2M | 0.08% | 2,046,867 | Common | SOLE |
| 74168J101 | PRME | PRIME MEDICINE INC | $2.0M | 0.08% | 700,000 | Common | SOLE |
| 29772L108 | ETON | ETON PHARMACEUTICALS INC | $2.0M | 0.08% | 151,400 | CALL | SOLE |
| 00032Q104 | WHWK | AADI BIOSCIENCE INC | $1.1M | 0.04% | 345,253 | Common | SOLE |
| 91678A107 | UPB | UPSTREAM BIO INC | $986,400 | 0.04% | 60,000 | Common | SOLE |
| 86889P117 | SRZNW | SURROZEN INC | $956,643 | 0.04% | 66,665 | Common | SOLE |
| 43906K209 | HOOK | HOOKIPA PHARMA INC | $781,611 | 0.03% | 388,861 | Common | SOLE |
| 04317A107 | ARTV | ARTIVA BIOTHERAPEUTICS INC | $417,846 | 0.02% | 41,453 | Common | SOLE |
| 61225M102 | GLUE | MONTE ROSA THERAPEUTICS INC | $150,598 | 0.01% | 21,700 | CALL | SOLE |
Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.