EcoR1 Capital, LLC Q3 2025 Filing
Filed November 14, 2025
Portfolio Value
$2.1T
Holdings
30
Report Date
Q3 2025
Filing Type
13F-HR
All Holdings (30 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | ZYMEZYMEWORKS INC | 22,970,388 | $392.3B | 18.83% | |
| 2 | ANABANAPTYSBIO INC | 7,880,094 | $241.3B | 11.58% | |
| 3 | QUREUNIQURE NV | 3,988,971 | $232.8B | 11.17% | |
| 4 | JAZZJAZZ PHARMACEUTICALS PLC | 1,706,469 | $224.9B | 10.79% | |
| 5 | CRNXCRINETICS PHARMACEUTICALS IN | 4,288,120 | $178.6B | 8.57% | |
| 6 | CRSPCRISPR THERAPEUTICS AG | 1,389,276 | $90.0B | 4.32% | |
| 7 | TNGXTANGO THERAPEUTICS INC | 10,630,736 | $89.3B | 4.29% | |
| 8 | ORICORIC PHARMACEUTICALS INC | 6,728,116 | $80.7B | 3.87% | |
| 9 | APLSAPELLIS PHARMACEUTICALS INC | 3,447,156 | $78.0B | 3.74% | |
| 10 | XNCRXENCOR INC | 6,144,767 | $72.1B | 3.46% | |
| 11 | GLPGGALAPAGOS NV | 1,667,119 | $57.7B | 2.77% | |
| 12 | IMNMIMMUNOME INC | 4,079,415 | $47.8B | 2.29% | |
| 13 | ETONETON PHARMACEUTICALS INC | 2,030,544 | $44.1B | 2.12% | |
| 14 | MBXMBX BIOSCIENCES INC | 2,123,604 | $37.2B | 1.78% | |
| 15 | MDGLMADRIGAL PHARMACEUTICALS INC | 75,000 | $34.4B | 1.65% | |
| 16 | RNAAVIDITY BIOSCIENCES INC | 765,000 | $33.3B | 1.60% | |
| 17 | BBOTBRIDGEBIO ONCOLOGY THERAPEUT | 2,823,126 | $32.7B | 1.57% | |
| 18 | NGNENEUROGENE INC | 1,271,342 | $22.0B | 1.06% | |
| 19 | ALKSALKERMES PLC | 500,000 | $15.0B | 0.72% | |
| 20 | AQSTAQUESTIVE THERAPEUTICS INC | 2,625,000 | $14.7B | 0.70% | |
| 21 | MTSRMETSERA INC | 271,529 | $14.2B | 0.68% | |
| 22 | CNTACENTESSA PHARMACEUTICALS PLC | 550,000 | $13.3B | 0.64% | |
| 23 | PRMEPRIME MEDICINE INC | 1,543,326 | $8.6B | 0.41% | |
| 24 | ATRAATARA BIOTHERAPEUTICS INC | 573,183 | $8.2B | 0.39% | |
| 25 | KURAKURA ONCOLOGY INC | 872,500 | $7.7B | 0.37% | |
| 26 | PEPGPEPGEN INC | 800,000 | $3.7B | 0.18% | |
| 27 | NUVB/WSNUVATION BIO INC | 963,333 | $3.6B | 0.17% | |
| 28 | VYGRVOYAGER THERAPEUTICS INC | 670,303 | $3.1B | 0.15% | |
| 29 | CMPSCOMPASS PATHWAYS PLC | 265,137 | $1.5B | 0.07% | |
| 30 | SRZNWSURROZEN INC | 66,665 | $859.3M | 0.04% |