EcoR1 Capital, LLC
All 13F Filings
- Location
- San Francisco, CA
- Most recent 13F
- Q2 2026
- Holdings value ($000)
- 2,056,733
- Description
- —
- Website
- —
- Founded
- —
- Chairman
- —
- CEO
- —
- All SEC filings
- View on sec.gov
Sector allocation over time (stocks only)
Stacked by quarter. Hover to see detailed sector breakdown for any quarter.
| Quarter | Date Filed | Holdings | Value ($000) | Form Type | Name |
|---|---|---|---|---|---|
| Q2 2026 | 8/14/2026 | 33 | 2,056,733 | 13F-HR | EcoR1 Capital, LLC |
| Q1 2026 | 5/15/2026 | 30 | 2,356,319 | 13F-HR | EcoR1 Capital, LLC |
| Q4 2025 | 2/17/2026 | 30 | 2,204,009 | 13F-HR | EcoR1 Capital, LLC |
| Q3 2025 | 11/14/2025 | 30 | 2,083,869 | 13F-HR | EcoR1 Capital, LLC |
| Q2 2025 | 8/14/2025 | 37 | 1,689,331 | 13F-HR | EcoR1 Capital, LLC |
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Money flow by instrument (QoQ, ex-options)
Derivatives reported exposure ($000):
39.98 K
(1.9% of total reported value)
· QoQ Δ:
+23.66 K
| Type | Value ($000) | Share % | Inflow | Outflow | Net |
|---|---|---|---|---|---|
| Stocks | 2.017 M | 100.0% | 0 | 627 | -627 |
| Other | 0 | 0.0% | 0 | 322.6 K | -322.6 K |
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Fund Snapshot
Q2 2026
Latest filed
8/14/2026
Total value ($000)
2,056,733
Holdings
33
QoQ value change ($000)
-299,586
(-12.7%)
Value = total reported 13F value ($000), Holdings = number of positions.
13F Value over time
Holdings count over time
Sector allocation (latest, stocks only)
Methodology:
sector allocation is stocks-only;
instrument flow table is ex-options;
options exposure is shown separately.
Details.