EcoR1 Capital, LLC

EcoR1 Capital, LLC reported 33 holdings worth US$2.06B as of Jun 30, 2026 (Form 13F)

As of Jun 30, 2026 · Filed Aug 14, 2026

EcoR1 Capital, LLC reported 33 holdings worth US$2.06B as of Jun 30, 2026. Largest: Zymeworks Inc., Anaptysbio, Inc. and Aktis Oncology, Inc. Filed Aug 14, 2026 (Form 13F).

Holdings
33
Value as reported
US$2.06B

The filing in full

CompanySharesValue as reported% of portfolio
Zymeworks Inc.23MUS$600M29.2%
Anaptysbio, Inc.7.88MUS$532M25.9%
Aktis Oncology, Inc.4.82MUS$155M7.6%
Cg Oncology, Inc.1.49MUS$106M5.2%
Eton Pharmaceuticals, Inc.2.17MUS$78.6M3.8%
Oric Pharmaceuticals, Inc.6.73MUS$72.9M3.5%
First Tracks Biotherapeutics, Inc.3.17MUS$63.9M3.1%
Lakefront Biotherapeutics1.67MUS$50M2.4%
Neurogene Inc.1.27MUS$40M1.9%
Stoke Therapeutics, Inc.735KUS$24M1.2%
Fulcrum Therapeutics, Inc.6.55MUS$24M1.2%
Bridgebio Oncology Therapeutics, Inc.2.82MUS$21.5M1.0%
Mbx Biosciences, Inc.389KUS$21.4M1.0%
Zenas Biopharma, Inc.790KUS$20M0.97%
Atara Biotherapeutics, Inc.1.55MUS$17.8M0.87%
Relay Therapeutics, Inc.698KUS$13.1M0.63%
Aura Biosciences, Inc.1.67MUS$11.8M0.58%
Odyssey Therapeutics, Inc.556KUS$10.4M0.51%
Eikon Therapeutics, Inc.733KUS$9.56M0.46%
Zura Bio Limited1.18MUS$6.96M0.34%
Phathom Pharmaceuticals, Inc.625KUS$6.78M0.33%
Nurix Therapeutics, Inc.270KUS$6.55M0.32%
Erasca, Inc.330KUS$6.05M0.29%
Eloxx Pharmaceuticals, Inc.400KUS$5.55M0.27%
Aardvark Therapeutics, Inc.396KUS$2.28M0.11%
Helix Acquisition Corp. Iii200KUS$2.13M0.10%
Crinetics Pharmaceuticals, Inc.0US$00.00%
Ibio, Inc.0US$00.00%
Prelude Therapeutics Incorporated0US$00.00%
Replimune Group, Inc.0US$00.00%
Xencor, Inc.0US$00.00%

Source

View original at SEC

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