Ionis Pharmaceuticals shares owned by Baker Bros. Advisors
Quarter-by-quarter ownership of Ionis Pharmaceuticals (IONS) shares owned by Baker Bros. Advisors
from 13F filings
Historical chart of Baker Bros. Advisors investment in Ionis Pharmaceuticals
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Quarterly reported holdings in Ionis Pharmaceuticals by Baker Bros. Advisors
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $37M | 567k | 65.42 |
| 2025-03-31 | $11M | 358k | 30.17 |
| 2024-12-31 | $13M | 358k | 34.96 |
| 2024-09-30 | $9.0M | 224k | 40.06 |
| 2016-12-31 | $2.7M | 57k | 47.83 |
| 2016-09-30 | $2.1M | 57k | 36.65 |
| 2016-06-30 | $1.3M | 57k | 23.29 |
| 2016-03-31 | $2.3M | 57k | 40.50 |
| 2015-12-31 | $3.5M | 57k | 61.94 |