Ionis Pharmaceuticals shares owned by Henderson Group
Quarter-by-quarter ownership of Ionis Pharmaceuticals (IONS) shares owned by Henderson Group
from 13F filings
Historical chart of Henderson Group investment in Ionis Pharmaceuticals
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Quarterly reported holdings in Ionis Pharmaceuticals by Henderson Group
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $4.2M | 64k | 65.42 |
| 2025-03-31 | $2.0M | 64k | 31.16 |
| 2024-12-31 | $2.2M | 64k | 34.95 |
| 2024-09-30 | $2.4M | 59k | 40.07 |
| 2024-06-30 | $2.8M | 59k | 47.70 |
| 2024-03-31 | $2.6M | 60k | 43.35 |
| 2023-12-31 | $3.0M | 60k | 50.59 |
| 2023-09-30 | $2.7M | 60k | 45.36 |
| 2023-06-30 | $2.5M | 60k | 41.03 |
| 2023-03-31 | $2.1M | 60k | 35.74 |
| 2022-12-31 | $2.0M | 54k | 37.77 |
| 2022-09-30 | $1.0M | 23k | 43.81 |
| 2022-03-31 | $959k | 26k | 37.28 |
| 2021-12-31 | $783k | 26k | 30.45 |
| 2021-09-30 | $461k | 14k | 33.53 |
| 2021-03-31 | $3.4M | 77k | 44.96 |
| 2020-12-31 | $2.9M | 51k | 56.53 |
| 2020-09-30 | $2.9M | 61k | 47.45 |
| 2020-06-30 | $4.1M | 70k | 58.96 |
| 2020-03-31 | $2.2M | 47k | 47.30 |
| 2019-12-31 | $12M | 202k | 60.41 |
| 2019-09-30 | $35M | 583k | 59.91 |
| 2019-06-30 | $20M | 308k | 64.27 |
| 2019-03-31 | $7.8M | 97k | 81.17 |
| 2018-12-31 | $645k | 12k | 54.06 |
| 2018-03-31 | $630k | 14k | 44.06 |
| 2016-06-30 | $297k | 13k | 23.27 |
| 2016-03-31 | $517k | 13k | 40.51 |
| 2015-12-31 | $791k | 13k | 61.98 |