BAKER BROS. ADVISORS LP
Top Portfolio Positions
82 positions ·
$17,486,824,522 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| INCY |
Incyte Corp
Healthcare
|
30,744,412 | $2,893,664,057 | 16.55% | |
| ONC |
BeOne Medicines Ltd.
Healthcare
|
8,799,053 | $2,613,054,769 | 14.94% | |
| INSM |
INSMED Inc
Healthcare
|
7,421,111 | $1,213,500,070 | 6.94% | |
| MDGL |
Madrigal Pharmaceuticals, Inc.
Healthcare
|
2,141,701 | $1,121,116,222 | 6.41% | |
| ACAD |
Acadia Pharmaceuticals Inc
Healthcare
|
42,896,690 | $954,880,319 | 5.46% | |
| RVMD |
Revolution Medicines, Inc.
Healthcare
|
9,555,357 | $929,258,468 | 5.31% | |
| CELC |
Celcuity Inc.
Healthcare
|
7,915,792 | $903,508,498 | 5.17% | |
| KOD |
Kodiak Sciences Inc.
Healthcare
|
19,919,186 | $759,319,370 | 4.34% | |
| KYMR |
Kymera Therapeutics, Inc.
Healthcare
|
8,657,242 | $721,061,686 | 4.12% | |
| SMMT |
Summit Therapeutics Inc.
Healthcare
|
36,391,063 | $689,974,554 | 3.95% |
Portfolio Trend
25 quarters · across all stocks
Holdings in IRON
Shares Held
Position Value (USD)
6 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $22,357,068 | 349,657 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $26,765,140 | 337,050 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $22,272,264 | 337,050 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $17,850,168 | 337,050 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $3,824,762 | 77,050 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $4,884,970 | 77,050 | Shares | Sole | 2025-02-14 | |
| No 13F history on record for this holder in this stock. | ||||||