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.
Superinvestors holding IONS, Q2 2026
1 superinvestor reports holding Ionis Pharmaceuticals Inc on Form 13F, worth $23.8M in total. Weight is Ionis Pharmaceuticals Inc's share of each 13F portfolio; actions compare shares with Q1 2026.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| ARK InvestCathie Wood | 0.2% | 300,770 | $23.8M | Added+4.2% |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of IONS each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2026
1 superinvestor holding at quarter end
- Added
- ARK Invest (+4.2%)
Q1 2026
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−31.7%)
Q4 2025
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−33.0%)
Q3 2025
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−29.9%)
Q2 2025
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−10.0%)
Q1 2025
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−2.4%)
Q4 2024
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−25.9%)
Q3 2024
1 superinvestor holding at quarter end
- Added
- ARK Invest (+1.7%)
Q2 2024
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−2.8%)
Q1 2024
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−26.5%)
Q4 2023
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−19.5%)
Q3 2023
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−2.3%)
Q2 2023
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−8.1%)
Q1 2023
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−1.4%)
Q4 2022
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−28.0%)
Q3 2022
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−21.0%)
Q2 2022
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−23.8%)
Q1 2022
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−12.9%)
Q4 2021
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−16.8%)
Q3 2021
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−4.4%)
Q2 2021
1 superinvestor holding at quarter end
- Added
- ARK Invest (+73.2%)