13F HOLDINGS REPORT
EcoR1 Capital, LLC
Quarter ended Q4 2023 · Filed November 14, 2023 · Accession 0000935836-23-000696
Total Value
$2.96B
Positions
51
Other Managers
0
Confidential Omitted
No
Holdings (51)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | PROTHENA CORP PLC | PRTA | 11,584,280 | $558.9M | 18.85% |
| 2 | APELLIS PHARMACEUTICALS INC | APLS | 10,899,859 | $414.6M | 13.99% |
| 3 | MIRATI THERAPEUTICS INC | 60468T105 | 5,748,399 | $250.4M | 8.45% |
| 4 | GALAPAGOS NV | GLPGF | 5,756,268 | $198.9M | 6.71% |
| 5 | REVOLUTION MEDICINES INC | RVMDW | 5,577,863 | $154.4M | 5.21% |
| 6 | ANAPTYSBIO INC | ANABV | 7,521,024 | $135.1M | 4.56% |
| 7 | ACADIA PHARMACEUTICALS INC | ACAD | 5,991,479 | $124.9M | 4.21% |
| 8 | ARVINAS INC | ARVN | 5,467,063 | $107.4M | 3.62% |
| 9 | XENCOR INC | XNCR | 5,282,516 | $106.4M | 3.59% |
| 10 | TANGO THERAPEUTICS INC | TNGX | 8,721,636 | $98.2M | 3.31% |
| 11 | ZYMEWORKS INC | ZYME | 13,437,473 | $85.2M | 2.87% |
| 12 | SPRINGWORKS THERAPEUTICS INC | 85205L107 | 3,460,208 | $80.0M | 2.70% |
| 13 | KURA ONCOLOGY INC | KURA | 5,806,871 | $53.0M | 1.79% |
| 14 | JAZZ PHARMACEUTICALS PLC | JAZZ | 368,411 | $47.7M | 1.61% |
| 15 | CRINETICS PHARMACEUTICALS IN | CRNX | 1,530,263 | $45.5M | 1.54% |
| 16 | CENTESSA PHARMACEUTICALS PLC | CNTA | 5,618,779 | $36.4M | 1.23% |
| 17 | RELAY THERAPEUTICS INC | RLAY | 4,163,824 | $35.0M | 1.18% |
| 18 | MORPHIC HLDG INC | 61775R105 | 1,480,190 | $33.9M | 1.14% |
| 19 | VOYAGER THERAPEUTICS INC | VYGR | 3,851,507 | $29.8M | 1.01% |
| 20 | NEUMORA THERAPEUTICS INC. | NMRA | 2,071,450 | $29.2M | 0.99% |
| 21 | APELLIS PHARMACEUTICALS INC | APLS | 732,500 | $27.9M | 0.94% |
| 22 | ALECTOR INC | ALEC | 4,056,548 | $26.3M | 0.89% |
| 23 | NUVATION BIO INC | NUVB | 19,209,643 | $25.7M | 0.87% |
| 24 | MERSANA THERAPEUTICS INC | 59045L106 | 19,364,688 | $24.6M | 0.83% |
| 25 | OVID THERAPEUTICS INC | OVID | 6,117,400 | $23.5M | 0.79% |
| 26 | GRAPHITE BIO INC | 38870X104 | 8,538,446 | $21.2M | 0.71% |
| 27 | ATEA PHARMACEUTICALS INC | AVIR | 6,995,861 | $21.0M | 0.71% |
| 28 | ORIC PHARMACEUTICALS INC | ORIC | 3,418,068 | $20.7M | 0.70% |
| 29 | EDGEWISE THERAPEUTICS INC | EWTX | 3,493,194 | $20.0M | 0.68% |
| 30 | THIRD HARMONIC BIO INC | 88427A107 | 2,982,444 | $19.1M | 0.64% |
| 31 | ACELYRIN INC | 00445A100 | 1,402,201 | $14.3M | 0.48% |
| 32 | ALLOGENE THERAPEUTICS INC | ALLO | 4,488,200 | $14.2M | 0.48% |
| 33 | TSCAN THERAPEUTICS INC | TCRX | 5,000,000 | $12.8M | 0.43% |
| 34 | DECIPHERA PHARMACEUTICALS IN | 24344T101 | 993,000 | $12.6M | 0.43% |
| 35 | GENERATION BIO CO | 37148K100 | 2,046,867 | $7.8M | 0.26% |
| 36 | GOSSAMER BIO INC | GOSS | 9,195,404 | $7.7M | 0.26% |
| 37 | PHATHOM PHARMACEUTICALS INC | PHAT | 700,000 | $7.3M | 0.24% |
| 38 | NGM BIOPHARMACEUTICALS INC | 62921N105 | 6,435,518 | $6.9M | 0.23% |
| 39 | PRIME MEDICINE INC | PRME | 600,000 | $5.7M | 0.19% |
| 40 | PROQR THRAPEUTICS N V | N71542109 | 2,980,016 | $3.9M | 0.13% |
| 41 | PRELUDE THERAPEUTICS INC | PRLD | 1,157,452 | $3.6M | 0.12% |
| 42 | ALIGOS THERAPEUTICS INC | ALGS | 3,948,360 | $2.9M | 0.10% |
| 43 | HOOKIPA PHARMA INC | HOOK | 4,595,024 | $2.8M | 0.10% |
| 44 | AEGLEA BIOTHERAPEUTICS INC | SYRE | 199,996 | $2.4M | 0.08% |
| 45 | ALLAKOS INC | 01671P100 | 748,900 | $1.7M | 0.06% |
| 46 | NUVATION BIO INC | NUVB | 963,333 | $1.3M | 0.04% |
| 47 | REVOLUTION MEDICINES INC | RVMDW | 31,300 | $866,384 | 0.03% |
| 48 | NEWAMSTERDAM PHARMA COMPANY | NAMSW | 66,665 | $616,651 | 0.02% |
| 49 | TEMPEST THERAPEUTICS INC | TPST | 931,000 | $283,676 | 0.01% |
| 50 | CAREMAX INC | 14171W111 | 100,000 | $212,000 | 0.01% |
| 51 | SURROZEN INC | SRZNW | 66,665 | $32,666 | 0.00% |