Ionis Pharmaceuticals, Inc. IONS
39.56 USD +0.76 (+1.95%)
Nov 6, 2026, 3:39 PM EST
38.61 Day range 40.00
38.31 52-week range 86.74
- YTD
- -50.00%
- 1 year
- -46.62%
Held by funds
179 US ETFs and mutual funds hold IONS · largest positions
Ownership
Held by insiders 0.60%
Held by institutions 110.12%
Float held by institutions 110.77%
Institutions 696
Top institutional holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| FMR, LLC | 14.82% | 24,631,956 | 988.97M | Jun 29, 2026 |
| Capital World Investors | 13.04% | 21,669,226 | 870.02M | Jun 29, 2026 |
| Blackrock Inc. | 6.44% | 10,704,660 | 429.79M | Jun 29, 2026 |
| Vanguard Portfolio Management LLC | 4.73% | 7,859,529 | 315.56M | Jun 29, 2026 |
| Wellington Management Group, LLP | 4.60% | 7,651,415 | 307.20M | Jun 29, 2026 |
| Vanguard Capital Management LLC | 4.34% | 7,211,497 | 289.54M | Jun 29, 2026 |
Top mutual fund holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund | 5.12% | 8,503,655 | 341.42M | Aug 30, 2026 |
| Growth Fund of America | 4.61% | 7,668,655 | 307.90M | Sep 29, 2026 |
| VANGUARD SPECIALIZED FUNDS-Vanguard Health Care Fund | 3.74% | 6,212,640 | 249.44M | Jul 30, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 3.00% | 4,989,044 | 200.31M | Jun 29, 2026 |
| New Economy Fund | 2.93% | 4,868,802 | 195.48M | Sep 29, 2026 |
| SmallCap World Fund Inc | 2.68% | 4,458,145 | 178.99M | Sep 29, 2026 |
Insiders
| Insider | Relation | Latest transaction | Date | Shares held |
|---|---|---|---|---|
| BAROLDI JOSEPH | Officer | Sale | Jun 25, 2026 | 0 |
| BENNETT C FRANK | Officer | Sale | Jul 6, 2026 | 0 |
| BERTHELSEN SPENCER R | Director | Conversion of Exercise of derivative security | Jul 14, 2026 | 161,303 |
| BIRCHLER BRIAN | Officer | Sale | Apr 15, 2026 | 67,500 |
| GEARY RICHARD S | Officer | Sale | Nov 5, 2025 | 59,657 |
| HAYDEN MICHAEL REUBEN | Director | Purchase | Jul 30, 2026 | 0 |