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EcoR1 Capital, LLC

Q2 2026 Holdings

Filed 2026-08-14 | 33 holdings | $2.1B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Zymeworks Inc(ZYME)COM98985Y108$600.4M22,970,38829.2%
Anaptysbio Inc(ANAB)COM032724106$531.9M7,880,09425.9%
Aktis Oncology Inc(AKTS)COM01021M104$155.5M4,824,4697.6%
CG Oncology Inc(CGON)COM156944100$106.2M1,494,3005.2%
Eton Pharmaceuticals Inc(ETON)COM29772L108$78.6M2,171,9383.8%
Crispr Therapeutics AG(CRSP)NAMEN AKTH17182108$75.8M1,389,2763.7%
Oric Pharmaceuticals Inc(ORIC)COM68622P109$72.9M6,728,1163.5%
First Tracks Biotherapeutics(TRAX)ORD SHS ADDED337185102$63.9M3,174,5193.1%
Lakefront Biotherapeutics NV(GLPG)SPON ADR36315X101$50.0M1,667,1192.4%
Neurogene Inc(NGNE)COM64135M105$40.0M1,271,3421.9%
CG Oncology Inc(CGON)CallCOM156944100$39.9M561,5001.9%
Stoke Therapeutics Inc(STOK)COM86150R107$24.0M735,0001.2%
Fulcrum Therapeutics Inc(FULC)COM359616109$24.0M6,549,8661.2%
Legend Biotech Corp(LEGN)SPONSORED ADS52490G102$23.1M800,0001.1%
Bridgebio Oncology Therapeut(BBOT)COM NEW107924102$21.5M2,823,1261.0%
MBX Biosciences Inc(MBX)COM55287L101$21.4M388,5001.0%
Zenas Biopharma Inc(ZBIO)COM98937L105$20.0M789,5001.0%
Atara Biotherapeutics Inc(ATRA)COM NEW046513206$17.8M1,552,0000.9%
Relay Therapeutics Inc(RLAY)COM75943R102$13.1M697,9480.6%
Aura Biosciences Inc(AURA)COM05153U107$11.8M1,666,6670.6%
Odyssey Therapeutics Inc(ODTX)COMMON STOCK ADDED67613T104$10.4M555,5550.5%
Eikon Therapeutics Inc(EIKN)COM282564103$9.6M732,6060.5%
Pharvaris N V(PHVS)COMN69605108$8.1M235,0000.4%
Zura BIO LTD(ZURA)CLASS A ORD SHSG9TY5A101$7.0M1,179,7150.3%
Phathom Pharmaceuticals Inc(PHAT)COM71722W107$6.8M625,0000.3%
Nurix Therapeutics Inc(NRIX)COM67080M103$6.6M270,0000.3%
Erasca Inc(ERAS)COM29479A108$6.0M330,0000.3%
Eloxx Pharmaceuticals Inc(ELOX)COM NEW ADDED29014R301$5.6M400,0000.3%
Aardvark Therapeutics Inc(AARD)COM002942100$2.3M396,1940.1%
Helix Acquisition Corp III USDCL A ORD SHSG4444S107$2.1M200,0000.1%
Mereo Biopharma Group PLC(MREO)SPON ADS589492107$317.7K1,000,0000.0%
Surrozen Inc(SRZNW)*W EXP 08/01/20386889P117$115.3K4,4440.0%
Aardvark Therapeutics Inc(AARD)CallCOM002942100$84.7K14,7000.0%