In Q1 2026, EcoR1 Capital held 26 positions worth $2.3B. They initiated 3 new positions and exited 82. Their largest holding was ZYME ($575.2M). Portfolio value grew +6.4% versus the prior quarter.
Frequently asked questions
What stocks did EcoR1 Capital own in Q1 2026?
EcoR1 Capital held 26 biotech stocks in their 13F portfolio in Q1 2026. Their top positions include ZYME, ANAB, JAZZ, CNTA, CRNX. The full holdings table is available on BiotechEdge with position sizes, quarter-over-quarter changes, and AI analysis.
How much was EcoR1 Capital's portfolio worth in Q1 2026?
EcoR1 Capital's tracked biotech portfolio was worth $2.3B across 26 positions, with total assets under management of approximately $5B. Portfolio values are based on 13F filings with the SEC.
What did EcoR1 Capital buy in Q1 2026?
EcoR1 Capital initiated 3 new positions in Q1 2026, including AKTS, EIKN, STOK. They also increased 9 existing positions.
What did EcoR1 Capital sell in Q1 2026?
EcoR1 Capital fully exited 82 positions in Q1 2026, including VRNA, WHWK, BEAM, MGNX, VERV and 77 more. They also trimmed 4 existing positions.
Is EcoR1 Capital a biotech fund?
Growth-stage crossover fund investing in life sciences companies from late-stage private rounds through public equity. Named after the EcoR1 restriction enzyme, reflecting the firm's scientific roots. Focuses on platform technologies and novel therapeutic modalities.
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