Q1 2024 · 13F-HR
EcoR1 Capital, LLCholdings as filed
Filed 2024-05-15 · accession 0000935836-24-000391
$3.95B
Reported value
59
Positions
2024-03-31
Period end
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 03753U106 | APLSUSD | APELLIS PHARMACEUTICALS INC | $667.6M | 16.9% | 11,357,425 | Common | SOLE |
| G72800108 | PRTA | PROTHENA CORP PLC | $286.9M | 7.26% | 11,584,280 | Common | SOLE |
| 04335A105 | ARVN | ARVINAS INC | $277.7M | 7.02% | 6,726,491 | Common | SOLE |
| 803607100 | SRPT | SAREPTA THERAPEUTICS INC | $248.5M | 6.29% | 1,919,835 | Common | SOLE |
| 22663K107 | CRNX | CRINETICS PHARMACEUTICALS IN | $194.5M | 4.92% | 4,155,375 | Common | SOLE |
| 36315X101 | LKFT | GALAPAGOS NV | $185.4M | 4.69% | 5,756,268 | Common | SOLE |
| 032724106 | ANAB | ANAPTYSBIO INC | $169.4M | 4.28% | 7,521,024 | Common | SOLE |
| 98985Y108 | ZYME | ZYMEWORKS INC | $141.4M | 3.58% | 13,437,473 | Common | SOLE |
| 50127T109 | KURA | KURA ONCOLOGY INC | $123.9M | 3.13% | 5,806,871 | Common | SOLE |
| G50871105 | JAZZ | JAZZ PHARMACEUTICALS PLC | $122.1M | 3.09% | 1,013,952 | Common | SOLE |
| 98401F105 | XNCR | XENCOR INC | $118.0M | 2.98% | 5,330,416 | Common | SOLE |
| 004225108 | ACAD | ACADIA PHARMACEUTICALS INC | $110.8M | 2.80% | 5,991,479 | Common | SOLE |
| 87583X109 | TNGX | TANGO THERAPEUTICS INC | $105.8M | 2.68% | 13,330,736 | Common | SOLE |
| 45257U108 | IMNM | IMMUNOME INC | $95.7M | 2.42% | 3,879,415 | Common | SOLE |
| H17182108 | CRSP | CRISPR THERAPEUTICS AG | $94.7M | 2.40% | 1,389,276 | Common | SOLE |
| 59045L106 | — | MERSANA THERAPEUTICS INC | $86.8M | 2.19% | 19,364,688 | Common | SOLE |
| 61775R105 | MORFUSD | MORPHIC HLDG INC | $83.9M | 2.12% | 2,384,384 | Common | SOLE |
| 67080N101 | NUVB | NUVATION BIO INC | $69.9M | 1.77% | 19,209,643 | Common | SOLE |
| 64135M105 | NGNE | NEUROGENE INC | $64.7M | 1.64% | 1,271,342 | Common | SOLE |
| 152309100 | CNTA | CENTESSA PHARMACEUTICALS PLC | $63.5M | 1.61% | 5,618,779 | Common | SOLE |
| 68622P109 | ORIC | ORIC PHARMACEUTICALS INC | $47.0M | 1.19% | 3,418,068 | Common | SOLE |
| 00653A107 | ADAPY | ADAPTIMMUNE THERAPEUTICS PLC | $43.3M | 1.10% | 27,404,070 | Common | SOLE |
| 89854M101 | TCRX | TSCAN THERAPEUTICS INC | $39.7M | 1.00% | 5,000,000 | Common | SOLE |
| 92915B106 | VYGR | VOYAGER THERAPEUTICS INC | $36.5M | 0.92% | 3,917,546 | Common | SOLE |
| 88427A107 | — | THIRD HARMONIC BIO INC | $30.0M | 0.76% | 3,182,444 | Common | SOLE |
| 640979100 | NMRA | NEUMORA THERAPEUTICS INC. | $28.5M | 0.72% | 2,071,450 | Common | SOLE |
| 15117B202 | CLDX | CELLDEX THERAPEUTICS INC | $27.3M | 0.69% | 650,000 | Common | SOLE |
| 46565G104 | 5E7 | ITEOS THERAPEUTICS INC | $27.3M | 0.69% | 1,999,249 | Common | SOLE |
| 52635N103 | LENZ | LENZ THERAPEUTICS INC | $27.2M | 0.69% | 1,219,774 | Common | SOLE |
| 04683R106 | AVIR | ATEA PHARMACEUTICALS INC | $24.8M | 0.63% | 6,145,861 | Common | SOLE |
| 014442107 | ALEC | ALECTOR INC | $24.4M | 0.62% | 4,056,548 | Common | SOLE |
| 28036F105 | EWTX | EDGEWISE THERAPEUTICS INC | $22.8M | 0.58% | 1,250,385 | Common | SOLE |
| 65487U108 | NKTX | NKARTA INC | $21.6M | 0.55% | 2,000,000 | Common | SOLE |
| N69605108 | PHVS | PHARVARIS N V | $20.8M | 0.53% | 900,000 | Common | SOLE |
| 92243G108 | PCVX | VAXCYTE INC | $20.5M | 0.52% | 300,000 | Common | SOLE |
| 558868105 | MDGL | MADRIGAL PHARMACEUTICALS INC | $20.0M | 0.51% | 75,000 | Common | SOLE |
| 05370A108 | RNAGBP | AVIDITY BIOSCIENCES INC | $19.3M | 0.49% | 757,576 | Common | SOLE |
| 690469101 | OVID | OVID THERAPEUTICS INC | $18.7M | 0.47% | 6,117,400 | Common | SOLE |
| 92539P101 | — | VERVE THERAPEUTICS INC | $16.6M | 0.42% | 1,250,000 | Common | SOLE |
| 50127T109 | KURA | KURA ONCOLOGY INC | $14.9M | 0.38% | 700,000 | CALL | SOLE |
| 492327101 | KROS | KEROS THERAPEUTICS INC | $12.4M | 0.31% | 187,500 | Common | SOLE |
| 26818M108 | DYN | DYNE THERAPEUTICS INC | $12.1M | 0.31% | 427,039 | Common | SOLE |
| 501976104 | KYTX | KYVERNA THERAPEUTICS INC | $11.2M | 0.28% | 450,000 | Common | SOLE |
| 38341P102 | GOSS | GOSSAMER BIO INC | $10.9M | 0.27% | 9,195,404 | Common | SOLE |
| 019818103 | — | ALLOVIR INC | $8.5M | 0.22% | 11,294,585 | Common | SOLE |
| 50015M109 | KOD | KODIAK SCIENCES INC | $8.5M | 0.21% | 1,613,600 | Common | SOLE |
| 37148K100 | GBIOGBX | GENERATION BIO CO | $8.3M | 0.21% | 2,046,867 | Common | SOLE |
| 046513107 | ATRAGBX | ATARA BIOTHERAPEUTICS INC | $7.1M | 0.18% | 10,167,043 | Common | SOLE |
| N71542109 | PRQR | PROQR THRAPEUTICS N V | $6.6M | 0.17% | 2,884,357 | Common | SOLE |
| 01626L105 | — | ALIGOS THERAPEUTICS INC | $6.3M | 0.16% | 6,389,468 | Common | SOLE |
| 03969K108 | ARQT | ARCUTIS BIOTHERAPEUTICS INC | $5.0M | 0.13% | 500,000 | Common | SOLE |
| 74168J101 | PRME | PRIME MEDICINE INC | $4.9M | 0.12% | 700,000 | Common | SOLE |
| 67080N119 | NUVB/WS | NUVATION BIO INC | $3.5M | 0.09% | 963,333 | Common | SOLE |
| 43906K100 | HOOKGBP | HOOKIPA PHARMA INC | $3.3M | 0.08% | 4,595,024 | Common | SOLE |
| 86889P117 | SRZNW | SURROZEN INC | $1.0M | 0.03% | 66,665 | Common | SOLE |
| 69353Y103 | PMVP | PMV PHARMACEUTICALS INC | $963,694 | 0.02% | 566,879 | Common | SOLE |
| 14171W111 | — | CAREMAX INC | $482,000 | 0.01% | 100,000 | Common | SOLE |
| 50015M109 | KOD | KODIAK SCIENCES INC | $268,786 | 0.01% | 51,100 | CALL | SOLE |
| 02083G100 | NVLSEUR | ALPINE IMMUNE SCIENCES INC | $39,640 | 0.00% | 1,000 | Common | 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.