EcoR1 Capital, LLC
Top Portfolio Positions
28 positions ·
$2,359,197,078 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| ZYME |
Zymeworks Inc.
Healthcare
|
22,970,388 | $575,178,515 | 24.38% | |
| ANAB |
Anaptysbio, Inc
Healthcare
|
7,880,094 | $437,030,013 | 18.52% | |
| JAZZ |
Jazz Pharmaceuticals plc
Healthcare
|
1,706,469 | $322,607,964 | 13.67% | |
| CNTA |
Centessa Pharmaceuticals plc
Healthcare
|
6,410,800 | $254,636,976 | 10.79% | |
| CRNX |
Crinetics Pharmaceuticals, Inc.
Healthcare
|
4,288,120 | $155,744,518 | 6.60% | |
| AKTS |
Aktis Oncology, Inc.
Healthcare
|
4,824,469 | $86,309,750 | 3.66% | |
| ORIC |
Oric Pharmaceuticals, Inc.
Healthcare
|
6,728,116 | $85,245,229 | 3.61% | |
| CGON |
CG Oncology, Inc.
Healthcare
|
1,102,000 | $74,583,360 | 3.16% | |
| CRSP |
CRISPR Therapeutics AG
Healthcare
|
1,389,276 | $66,087,859 | 2.80% | |
| ETON |
Eton Pharmaceuticals, Inc.
Healthcare
|
2,171,938 | $53,603,429 | 2.27% |
Portfolio Trend
25 quarters · across all stocks
Holdings in ATRA
Shares Held
Position Value (USD)
9 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-05-07 | $15,411,360 | 1,552,000 | Shares | Sole | 2026-05-07 | |
| 2026-03-31 | $471,074 | 99,593 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $10,368,880 | 573,183 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $8,213,712 | 573,183 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $4,424,972 | 573,183 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $3,404,707 | 573,183 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $7,082,703 | 532,134 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $3,812,465 | 468,938 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $3,456,771 | 406,679 | Shares | Sole | 2024-08-14 | |
| No 13F history on record for this holder in this stock. | ||||||