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.
Q3 2025 vs. Q2 2025
How the institutions holding Ionis Pharmaceuticals Inc changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Of which not filed for Q3 2025 | Q3 2025 | Change |
|---|---|---|---|---|
| Holders | 363 | 4 | 437 | +78 |
| Shares | 168.9M | 466.5K | 168.2M | −221.1K (−0.1%) |
| Value | $6.67B | $18.4M | $11.0B | +$4.36B (+65.5%) |
4 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (115)
Institutions that held Ionis Pharmaceuticals Inc at the end of Q3 2025 but not at the end of Q2 2025.
Showing the largest 100 of 115 by value.
Sold out (37)
Institutions that held Ionis Pharmaceuticals Inc at the end of Q2 2025 and filed for Q3 2025 without it.
Not filed for Q3 2025 yet (4)
Institutions that held Ionis Pharmaceuticals Inc at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| Norges Bank | 450,254 | $17.8M |
| E Fund Management Co., Ltd. | 16,160 | $638.5K |
| Semmax Financial Advisors Inc. | 79 | $3.29K |
| Parkworth Wealth Management, Inc. | 8 | $316 |