Ionis Pharmaceuticals Inc
IONS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000874015
In the last 90 days, Ionis Pharmaceuticals Inc insiders filed 1 open-market purchase and 4 sales; 515 institutions reported holding it in 13F filings for Q2 2026, worth $14.3B in total; ARK Invest is the only superinvestor holding it.
13F holders, Q3 2024
Institutional positions in Ionis Pharmaceuticals Inc as of Sep 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 354
- +1 vs. Q2 2024
- Shares held
- 157.5M
- +24.6M (+18.5%) vs. Q2 2024
- Total value
- $6.31B
- −$23.0M (−0.4%) vs. Q2 2024
- New holders
- 53
- 131 more added
- Sold out
- 52
- 107 more reduced
4 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IONS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 515 | $14.3B |
| Q1 2026 | 497 | $13.0B |
| Q4 2025 | 494 | $13.5B |
| Q3 2025 | 437 | $11.0B |
| Q2 2025 | 363 | $6.67B |
| Q1 2025 | 344 | $5.03B |
| Q4 2024 | 356 | $5.61B |
| Q3 2024 | 354 | $6.31B |
| Q2 2024 | 357 | $6.83B |
| Q1 2024 | 361 | $6.17B |
| Q4 2023 | 365 | $7.21B |
| Q3 2023 | 312 | $6.35B |
| Q2 2023 | 305 | $5.60B |
| Q1 2023 | 315 | $4.69B |
| Q4 2022 | 339 | $4.93B |
| Q3 2022 | 350 | $5.59B |
| Q2 2022 | 351 | $4.61B |
| Q1 2022 | 333 | $4.63B |
| Q4 2021 | 341 | $3.75B |
| Q3 2021 | 326 | $4.08B |
| Q2 2021 | 338 | $4.96B |
| Q1 2021 | 365 | $5.55B |
Institutions, Q3 2024
Shares, value and share of portfolio for each institution holding Ionis Pharmaceuticals Inc; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| SYSTM Wealth Solutions LLC | 0 | $0 | 0.00% | −73−100.0% | Sold out |
| Innealta Capital, LLC | 0 | $0 | 0.00% | −47−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −46−100.0% | Sold out |
| Great Lakes Retirement, Inc. | 0 | $0 | 0.00% | −43−100.0% | Sold out |
| Bessemer Group Inc | 0 | $0 | 0.00% | −52−100.0% | Sold out |
| Kelly Financial Services LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| BlackRock Inc. | – | – | – | – | Not filed |
| Susquehanna Fundamental Investments, LLC | – | – | – | – | Not filed |
| Buckingham Strategic Wealth, LLC | – | – | – | – | Not filed |
| Institutional & Family Asset Management, LLC | – | – | – | – | Not filed |