Position history for BAKER BROS. ADVISORS LP's holdings in IONIS PHARMACEUTICALS INC
BAKER BROS. ADVISORS LP holds 1.8M shares of IONS (IONIS PHARMACEUTICALS INC), worth $141.8M as of 2025-Q4. The position was increased (++216.1% shares). IONS represents 0.8% of BAKER BROS. ADVISORS LP's portfolio.
Current Value
$141.8M
Current Shares
1.8M
Total Value Change
+$132.8M
Total Shares Change
+1.6M
Other major holders of IONS: UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
Increased |
| 1.8M |
+216.1% |
| $141.8M |
| 0.8% |
| $78.97 |
69 |
| 2025-Q3 | New | 566,798 | - | $37.1M | 0.3% | $64.15 | 48 |
| 2025-Q2 | Exited | 0 | -100.0% | $0 | 0.0% | $39.80 | 0 |
| 2025-Q1 | Unchanged | 357,915 | 0.0% | $10.8M | 0.1% | $31.15 | 0 |
| 2024-Q4 | Increased | 357,915 | +60.2% | $12.5M | 0.1% | $34.92 | 48 |
| 2024-Q3 | New | 223,470 | - | $9M | 0.1% | $40.85 | 38 |