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 2023
Institutional positions in Ionis Pharmaceuticals Inc as of Sep 30, 2023. 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
- 312
- +12 vs. Q2 2023
- Shares held
- 139.7M
- +6.44M (+4.8%) vs. Q2 2023
- Total value
- $6.35B
- +$878.1M (+16.1%) vs. Q2 2023
- New holders
- 39
- 101 more added
- Sold out
- 27
- 103 more reduced
5 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2023: 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 2023
Shares, value and share of portfolio for each institution holding Ionis Pharmaceuticals Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Pictet Asset Management Holding SA | 3,240,934 | $147.0M | 0.18% | +3,240,934 | New |
| Tweedy, Browne Co LLC | 3,510,173 | $159.2M | 8.52% | −30,685−0.9% | Reduced |
| Price T Rowe Associates Inc | 3,757,997 | $170.5M | 0.03% | −77,870−2.0% | Reduced |
| State Street Corp | 3,955,029 | $179.4M | 0.01% | −19,424−0.5% | Reduced |
| BVF Inc | 4,004,613 | $181.6M | 4.90% | +1,158,598+40.7% | Added |
| Clearbridge Investments, LLC | 4,840,695 | $219.6M | 0.21% | −346,509−6.7% | Reduced |
| BlackRock Inc. | 9,114,627 | $413.4M | 0.01% | −21,547−0.2% | Reduced |
| Bellevue Group AG | 9,233,700 | $418.8M | 6.75% | −146,600−1.6% | Reduced |
| T. Rowe Price Investment Management, Inc. | 13,123,055 | $595.3M | 0.42% | +39,328+0.3% | Added |
| Vanguard Group Inc | 14,502,025 | $657.8M | 0.02% | −21,241−0.1% | Reduced |
| FMR LLC | 21,498,922 | $975.2M | 0.08% | +35,106+0.2% | Added |
| Quilter Plc | 363 | – | – | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −987,450−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −125,850−100.0% | Sold out |
| Eventide Asset Management, LLC | 0 | $0 | 0.00% | −110,000−100.0% | Sold out |
| Public Sector Pension Investment Board | 0 | $0 | 0.00% | −98,000−100.0% | Sold out |
| Agf Management Ltd | 0 | $0 | 0.00% | −87,867−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −84,961−100.0% | Sold out |
| Bank of Nova Scotia | 0 | $0 | 0.00% | −78,042−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −39,025−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −34,047−100.0% | Sold out |
| Vestmark Advisory Solutions, Inc. | 0 | $0 | 0.00% | −23,623−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −23,100−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −21,019−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −16,019−100.0% | Sold out |
| Seven Eight Capital, LP | 0 | $0 | 0.00% | −6,178−100.0% | Sold out |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −5,956−100.0% | Sold out |
| National Asset Management, Inc. | 0 | $0 | 0.00% | −5,615−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −5,348−100.0% | Sold out |
| Teza Capital Management LLC | 0 | $0 | 0.00% | −5,134−100.0% | Sold out |
| Regions Financial Corp | 0 | $0 | 0.00% | −5,110−100.0% | Sold out |
| New England Capital Financial Advisors LLC | 0 | $0 | 0.00% | −1,300−100.0% | Sold out |
| First Manhattan Co | 0 | $0 | 0.00% | −775−100.0% | Sold out |
| HM Payson & Co | 0 | $0 | 0.00% | −360−100.0% | Sold out |
| Stonebridge Capital Advisors LLC | 0 | $0 | 0.00% | −69−100.0% | Sold out |
| Plante Moran Financial Advisors, LLC | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| CVA Family Office, LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Valley National Advisers Inc | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| Fairfield, Bush & Co. | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Pictet Asset Management SA | – | – | – | – | Not filed |
| Tekla Capital Management LLC | – | – | – | – | Not filed |
| PFS Investments Inc. | – | – | – | – | Not filed |
| Kistler-Tiffany Companies, LLC | – | – | – | – | Not filed |
| Coastal Capital Group, Inc. | – | – | – | – | Not filed |