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FILER PROFILE · CIK 0001587114

EcoR1 Capital, LLC

9 filings 4 distinct issuers Active 2021-04-132025-05-19

Track Record

Total filings
9
5 SCHEDULE · 4 SC
Distinct issuers
4
44% issuer diversity
Median stake
20.55%
13,475,428 avg shares
AI briefs cached
0/9
intent-classified filings

Backtested Performance · post-filing returns (split + dividend adjusted)

Median 30d
across 0 filings · win rate —
Median 60d
across 0 filings · win rate —
Median 90d
across 0 filings · win rate —
Median 1y
across 0 filings · win rate —

Anchor: closest trading day on/after filing's date_of_event. Source: Yahoo Finance daily adj_close. Past performance is not indicative of future results.

Filings · 9 total

FiledFormIssuerStakeSharesIntent
2025-05-19 SCHEDULE GALAPAGOS NVGLPGF 11.84% 7,803,202 view →
2025-03-17 SCHEDULE Zymeworks Inc.ZYME 24.20% 16,858,418 view →
2025-02-18 SCHEDULE Zymeworks Inc.ZYME 22.80% 15,720,161 view →
2025-01-13 SCHEDULE Zymeworks Inc.ZYME 22.40% 15,411,078 view →
2025-01-03 SCHEDULE PROTHENA CORP PUBLIC LTD COPRTA 21.50% 11,584,280 view →
2024-10-08 SC GALAPAGOS NVGLPGF view →
2022-01-14 SC PROTHENA CORP PUBLIC LTD COPRTA view →
2021-05-11 SC ANAPTYSBIO, INCANABV view →
2021-04-13 SC ANAPTYSBIO, INCANABV view →

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