Guru Ownership Over Time
Guru Analysis for Ionis Pharmaceuticals, Inc. (IONS)
Ionis Pharmaceuticals, Inc. (IONS), a key player in the Healthcare sector, continues to attract institutional attention.
As of Q3 2025, a total of 9 Super Investors (Gurus) hold positions in the company, with a combined stake valued at approximately $329.45 M.
Top institutional holders include Tweedy Browne and Catherine Wood.
Notably, Tweedy Browne has expressed high conviction in this stock, allocating 16.48% of their equity portfolio to it.
Institutional sentiment is currently Slightly Bearish. This is evidenced by a $10.33 M net outflow during the quarter.
Recent activity highlights Joel Greenblatt who increased their stake by 125.2%. Conversely, Jefferies Group reduced exposure by 54.6%.
| Portfolio Manager | % of portfolio | Activity | Shares | Value | Peroid |
|---|---|---|---|---|---|
| 16.48% | Add 0.3% | 2,901,216 | $189.8 M | Q3 2025 | |
| 0.25% | Reduce -29.9% | 631,215 | $41.29 M | Q3 2025 | |
| 0.04% | Add 79.8% | 486,714 | $31.84 M | Q3 2025 | |
| 0.01% | New Buy | 43,578 | $2.85 M | Q3 2025 | |
| 0.01% | Add 125.2% | 32,152 | $2.1 M | Q3 2025 | |
| 0.01% | Add 4.4% | 12,476 | $816,180 | Q3 2025 | |
| 0.00% | Reduce -54.6% | 10,169 | $665,256 | Q3 2025 | |
| 0.00% | New Buy | 6,815 | $438,749 | Q3 2025 | |
| 0.00% | New Buy | 6,210 | $406,258 | Q3 2025 |
| Period | Portfolio Manager | Activity | Share change | % change to portfolio |
|---|
| Period | Portfolio Manager | Activity | Share change | % change to portfolio |
|---|
| Period | Portfolio Manager | Activity | Share change | % change to portfolio |
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| Portfolio Manager | Option Type | % of portfolio | Activity | Shares | Value | Period |
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Key Holders
Top 5 by Value
Top 5 by Conviction
Recent Activity Breakdown(Q3 2025)
Guru Consensus (Q3 2025)
FAQs for Ionis Pharmaceuticals, Inc. (IONS)
Top Guru holders include Tweedy Browne ($189.8 M), Catherine Wood ($41.29 M), Renaissance Technologies ($31.84 M). Collectively, tracked Gurus hold 4.13 M shares.
Based on recent 13F filings, the sentiment is **Negative (Net Sell)**. There was a net outflow of $10.33 M, with 7 Gurus buying and 3 Gurus selling.
In the recent quarter, 2 Gurus reduced their positions, and 1 Gurus sold out of IONS completely. Total sell value was $29.97 M.
Yes, 3 Gurus opened new positions in IONS, and 4 added to their existing holdings. Total buy value was $19.64 M.