IONIS PHARMACEUTICALS INC. (IONS) — Hedge Fund Ownership Q4 2025
IONS
- IONIS PHARMACEUTICALS INC. (IONS) is held by 2 of 82 tracked hedge funds, with Third Avenue Management (16%) and Tweedy, Browne (16%) holding the largest stakes, indicating limited hedge fund interest relative to peers.
- The biggest decreases in IONS holdings came from Third Avenue Management (-15%) and Tweedy, Browne (-15%), suggesting profit-taking or de-risking.
- Overall, hedge funds decreased exposure to IONIS PHARMACEUTICALS INC. (IONS) by -15% vs the prior quarter and -24% vs prior year.
| # | Fund | % of Portfolio † | Shares † | Shares vs Prior Quarter † | Shares vs Prior Year † | Aggregate Value † | Reported Price * | Option |
|---|---|---|---|---|---|---|---|---|
| 1 |
Third Avenue Management
|
15.74% | 2.5M | -15.04% | -24.13% | $195.0M | $79.11 | — |
| 2 |
Tweedy, Browne Tweedy, Browne Co LLC
|
15.74% | 2.5M | -15.04% | -24.13% | $195.0M | $79.11 | — |
| 2 | Total | — | 4.9M | -15.04% | -24.13% | $390.0M | — | — |
* Reported price is not an actual purchase or sale price. It is the price as of the last portfolio date.
† Portfolio value, share counts, and period-over-period changes exclude options positions (PUT/CALL), which are shown in the Option column for reference only.
† Portfolio value, share counts, and period-over-period changes exclude options positions (PUT/CALL), which are shown in the Option column for reference only.