EcoR1 Capital, LLC Q2 2025 Filing
Filed August 14, 2025
Portfolio Value
$1.7T
Holdings
36
Report Date
Q2 2025
Filing Type
13F-HR
All Holdings (36 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | ZYMEZYMEWORKS INC | 22,970,388 | $288.3B | 17.06% | |
| 2 | APLSAPELLIS PHARMACEUTICALS INC | 11,895,808 | $205.9B | 12.19% | |
| 3 | JAZZJAZZ PHARMACEUTICALS PLC | 1,706,469 | $181.1B | 10.72% | |
| 4 | ANABANAPTYSBIO INC | 7,880,094 | $174.9B | 10.36% | |
| 5 | CRNXCRINETICS PHARMACEUTICALS IN | 4,288,120 | $123.3B | 7.30% | |
| 6 | 5E7ITEOS THERAPEUTICS INC | 10,688,978 | $106.6B | 6.31% | |
| 7 | CRSPCRISPR THERAPEUTICS AG | 1,389,276 | $67.6B | 4.00% | |
| 8 | QUREUNIQURE NV | 4,123,971 | $57.5B | 3.40% | Call |
| 9 | TNGXTANGO THERAPEUTICS INC | 10,630,736 | $54.4B | 3.22% | |
| 10 | XNCRXENCOR INC | 6,144,767 | $48.3B | 2.86% | |
| 11 | IMNMIMMUNOME INC | 4,079,415 | $37.9B | 2.25% | |
| 12 | JANXJANUX THERAPEUTICS INC | 1,469,818 | $34.0B | 2.01% | |
| 13 | GLPGGALAPAGOS NV | 1,036,945 | $29.0B | 1.72% | |
| 14 | ETONETON PHARMACEUTICALS INC | 2,030,544 | $28.9B | 1.71% | |
| 15 | KURAKURA ONCOLOGY INC | 4,200,000 | $24.2B | 1.43% | |
| 16 | AKROAKERO THERAPEUTICS INC | 440,000 | $23.5B | 1.39% | |
| 17 | MDGLMADRIGAL PHARMACEUTICALS INC | 75,000 | $22.7B | 1.34% | |
| 18 | NGNENEUROGENE INC | 1,271,342 | $19.0B | 1.13% | |
| 19 | VRNAVERONA PHARMA PLC | 200,000 | $18.9B | 1.12% | |
| 20 | TECXTECTONIC THERAPEUTIC INC | 935,121 | $18.6B | 1.10% | |
| 21 | ORICORIC PHARMACEUTICALS INC | 1,618,068 | $16.4B | 0.97% | |
| 22 | ALKSALKERMES PLC | 500,000 | $14.3B | 0.85% | |
| 23 | RNAAVIDITY BIOSCIENCES INC | 500,000 | $14.2B | 0.84% | |
| 24 | MBXMBX BIOSCIENCES INC | 1,149,794 | $13.1B | 0.78% | |
| 25 | VYGRVOYAGER THERAPEUTICS INC | 3,917,546 | $12.2B | 0.72% | |
| 26 | PCRXPACIRA BIOSCIENCES INC | 457,471 | $10.9B | 0.65% | |
| 27 | REPLREPLIMUNE GROUP INC | 850,341 | $7.9B | 0.47% | |
| 28 | MTSRMETSERA INC | 271,529 | $7.7B | 0.46% | |
| 29 | ADAPYADAPTIMMUNE THERAPEUTICS PLC | 27,404,070 | $6.6B | 0.39% | |
| 30 | DAWNDAY ONE BIOPHARMACEUTICALS I | 862,068 | $5.6B | 0.33% | |
| 31 | HLVXHILLEVAX INC | 2,420,243 | $4.8B | 0.29% | |
| 32 | ATRAATARA BIOTHERAPEUTICS INC | 573,183 | $4.4B | 0.26% | |
| 33 | WHWKWHITEHAWK THERAPEUTICS INC | 1,091,417 | $2.0B | 0.12% | |
| 34 | MGNXMACROGENICS INC | 1,602,717 | $1.9B | 0.11% | |
| 35 | NUVB/WSNUVATION BIO INC | 963,333 | $1.9B | 0.11% | |
| 36 | SRZNWSURROZEN INC | 66,665 | $596.0M | 0.04% |