The Analysis of EcoR1 Capital, LLC's Holdings


Currently, EcoR1 Capital, LLC holds 32 types of securities in its portfolio with a total value $2.1B. In the most recent quarter, they have increased their positions in ORIC (+5.1M shares, valued at $61.3M), MREO (+74.5M shares, valued at $36.5M), BBOT (+2.8M shares, valued at $32.7M); decreased their positions in APLS (-8.4M shares, valued at $191.2M), KURA (-3.3M shares, valued at $29.4M), VYGR (-3.2M shares, valued at $15.2M); initiated new positions in MREO (+74.5M shares, valued at $36.5M), BBOT (+2.8M shares, valued at $32.7M), AQST (+2.6M shares, valued at $14.7M).


Top Holding Treemap

Stock Holdings
TickerCompany NameSharesShares â–ŗ%Event DateReport DateHistory
ZYME ZYMEWORKS INC23.0M shares0.00%2025-09-302025-11-14history
ANAB ANAPTYSBIO INC7.9M shares0.00%2025-09-302025-11-14history
QURE UNIQURE NV4.0M shares0.00%2025-09-302025-11-14history
JAZZ JAZZ PHARMACEUTICALS PLC1.7M shares0.00%2025-09-302025-11-14history
CRNX CRINETICS PHARMACEUTICALS IN4.3M shares0.00%2025-09-302025-11-14history
CRSP CRISPR THERAPEUTICS AG1.4M shares0.00%2025-09-302025-11-14history
TNGX TANGO THERAPEUTICS INC10.6M shares0.00%2025-09-302025-11-14history
ORIC ORIC PHARMACEUTICALS INC6.7M shares315.81%2025-09-302025-11-14history
Sponsored
APLS APELLIS PHARMACEUTICALS INC3.4M shares-71.02%2025-09-302025-11-14history
XNCR XENCOR INC6.1M shares0.00%2025-09-302025-11-14history
GLPG GALAPAGOS NV1.7M shares60.77%2025-09-302025-11-14history
IMNM IMMUNOME INC4.1M shares0.00%2025-09-302025-11-14history
ETON ETON PHARMACEUTICALS INC2.0M shares0.00%2025-09-302025-11-14history
MBX MBX BIOSCIENCES INC2.1M shares84.69%2025-09-302025-11-14history
MREO 74.5M sharesnew addition2026-01-022026-01-09history
MDGL MADRIGAL PHARMACEUTICALS INC75.0K shares0.00%2025-09-302025-11-14history
Sponsored
RNA AVIDITY BIOSCIENCES INC765.0K shares53.00%2025-09-302025-11-14history
BBOT BRIDGEBIO ONCOLOGY THERAPEUT2.8M sharesnew addition2025-09-302025-11-14history
NGNE NEUROGENE INC1.3M shares0.00%2025-09-302025-11-14history
ALKS ALKERMES PLC500.0K shares0.00%2025-09-302025-11-14history
AQST AQUESTIVE THERAPEUTICS INC2.6M sharesnew addition2025-09-302025-11-14history
MTSR METSERA INC271.5K shares0.00%2025-09-302025-11-14history
CNTA CENTESSA PHARMACEUTICALS PLC550.0K sharesnew addition2025-09-302025-11-14history
PRME PRIME MEDICINE INC1.5M sharesnew addition2025-09-302025-11-14history
Sponsored
ATRA ATARA BIOTHERAPEUTICS INC573.2K shares0.00%2025-09-302025-11-14history
KURA KURA ONCOLOGY INC872.5K shares-79.23%2025-09-302025-11-14history
IBIO 2.2M sharesnew addition2025-12-102025-12-17history
PEPG PEPGEN INC800.0K sharesnew addition2025-09-302025-11-14history
NUVB.WS NUVATION BIO INC963.3K shares0.00%2025-09-302025-11-14history
VYGR VOYAGER THERAPEUTICS INC670.3K shares-82.89%2025-09-302025-11-14history
CMPS COMPASS PATHWAYS PLC265.1K sharesnew addition2025-09-302025-11-14history
SRZNW SURROZEN INC66.7K shares0.00%2025-09-302025-11-14history
Sponsored

Call Option Holdings
No call option holdings data available

Put Option Holdings
No put option holdings data available