Ionis Pharmaceuticals Inc (NASDAQ:IONS) has 486 institutional investors that have filed 13F reports for the period ending March 2026.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| FMR LLC | 31 Mar, 2026 | 24,556,637 | 484,536 | 2.01% | $1,843,957,873.00 |
| Capital World Investors | 31 Mar, 2026 | 21,186,369 | 3,225,070 | 17.96% | $1,590,884,448.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 10,442,476 | -205,387 | -1.93% | $784,125,524.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 7,808,902 | 7,808,902 | 0.00% | $586,370,451.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 7,118,330 | 7,118,330 | 0.00% | $534,515,400.00 |
| WELLINGTON MANAGEMENT GROUP LLP | 31 Mar, 2026 | 6,391,816 | 131,491 | 2.10% | $479,961,465.00 |
| T. Rowe Price Investment Management, Inc. | 31 Mar, 2026 | 6,159,027 | -8,738,855 | -58.66% | $462,482.00 |
| TWO SIGMA INVESTMENTS, LP | 31 Mar, 2026 | 5,857,629 | 3,198,983 | 120.32% | $439,849,362.00 |
| State Street Corp | 31 Mar, 2026 | 3,995,564 | 20,699 | 0.52% | $300,026,901.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 3,984,332 | 835,483 | 26.53% | $305,196,969.00 |
| Royal Bank Of Canada | 31 Mar, 2026 | 3,801,815 | 2,683,018 | 239.81% | $285,477,000.00 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 31 Mar, 2026 | 3,025,251 | 3,025,251 | 0.00% | $227,167.00 |
| Jpmorgan Chase & Co | 31 Mar, 2026 | 2,363,567 | 58,775 | 2.55% | $171,405,902.00 |
| Tweedy, Browne Co LLC | 31 Mar, 2026 | 2,275,625 | -189,305 | -7.68% | $170,876,681.00 |
| Artisan Partners Limited Partnership | 31 Mar, 2026 | 2,058,308 | 876,892 | 74.22% | $154,558,340.00 |
| BAKER BROS. ADVISORS LP | 31 Mar, 2026 | 2,047,727 | 255,886 | 14.28% | $153,763,820.00 |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 31 Mar, 2026 | 1,979,669 | 0 | 0.00% | $148,653,345.00 |
| Deep Track Capital, LP | 31 Mar, 2026 | 1,950,000 | 250,000 | 14.71% | $146,425,500.00 |
| Bellevue Group AG | 31 Mar, 2026 | 1,818,665 | -2,983,534 | -62.13% | $136,563,555.00 |
| Goldman Sachs Group Inc | 31 Mar, 2026 | 1,699,847 | -12,085 | -0.71% | $127,641,511.00 |