IONS · Company research
Ionis Pharmaceuticals, Inc. Common Stock (IONS): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
80records availableHealthcare
Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| Tweedy, Browne Co LLC | 732905 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2280311 | 180805859 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Keating Financial Advisory Services, Inc. | 2103443 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 88 | 6978 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Squarepoint Ops LLC | 1642575 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 109379 | 8672661 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Sixth Street Partners Management Company, L.P. | 1812095 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1605001 | 127260529 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Aster Capital Management (DIFC) Ltd | 2040915 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 190 | 15065 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Capital Advisors, Ltd. LLC | 1597878 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 295 | 23 | — | — | — | Jul 16, 2026 | SEC_13F_DATASET |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 1638555 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 787263 | 62422083 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Wedmont Private Capital | 1904274 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6723 | 391615 | — | — | — | Jul 13, 2026 | SEC_13F_DATASET |
| JONES FINANCIAL COMPANIES LLLP | 815917 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 47442 | 3851342 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BESSEMER GROUP INC | 1054074 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 94 | 7 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Capital World Investors | 1422849 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 21669226 | 1718152930 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Federation des caisses Desjardins du Quebec | 2022297 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 60 | 4757 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Handelsbanken Fonder AB | 1398318 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 383211 | 30385 | — | — | — | Jul 10, 2026 | SEC_13F_DATASET |
| SG Americas Securities, LLC | 1313360 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 74589 | 5914 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Inspire Investing, LLC | 1670139 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8127 | 644390 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| ALGERT GLOBAL LLC | 1275218 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 206853 | 16401374 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| State of New Jersey Common Pension Fund D | 1483066 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 50743 | 4023412 | — | — | — | Aug 4, 2026 | SEC_13F_DATASET |
| VANGUARD ASSET MANAGEMENT, Ltd | 1680208 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 155088 | 12296928 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Dynasty Wealth Management, LLC | 1727599 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13661 | 1083181 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| OPPENHEIMER ASSET MANAGEMENT INC. | 1269119 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11157 | 884639 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| One Capital Management, LLC | 1606588 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 58939 | 4425729 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Privium Fund Management B.V. | 1795097 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 319924 | 25366774 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| OSAIC HOLDINGS, INC. | 1677044 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 507 | 40200 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Vontobel Holding Ltd. | 1588340 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4957 | 393041 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| CIBC Asset Management Inc | 1021926 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5017 | 397798 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| SouthState Bank Corp | 764038 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14 | 1111 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| ARIZONA STATE RETIREMENT SYSTEM | 1558481 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 43302 | 3433416 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| EASTERN BANK | 1126395 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 300 | 23787 | — | — | — | Jul 1, 2026 | SEC_13F_DATASET |
| Dana Investment Advisors, Inc. | 1427514 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 23272 | 1845236 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Raiffeisen Bank International AG | 2044885 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 35000 | 2824150 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| GF FUND MANAGEMENT CO. LTD. | 2057060 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3497 | 277277 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Horizon Investments, LLC | 1560717 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 26 | 2062 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Graham Capital Management, L.P. | 1315421 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16717 | 1325491 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Stratos Wealth Partners, LTD. | 1612865 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7801 | 618541 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Mitsubishi UFJ Asset Management Co., Ltd. | 1466546 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2618 | 207581 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 1086619 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 57722 | 4657588 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| ProShare Advisors LLC | 1357955 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5417 | 429514 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| KOM Wealth Management Group, LLC | 1804116 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2654 | 210436 | — | — | — | Jul 23, 2026 | SEC_13F_DATASET |
| ODDO BHF ASSET MANAGEMENT SAS | 1686970 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 274 | 426793 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| HORIZON KINETICS ASSET MANAGEMENT LLC | 1056823 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10904 | 864578 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Orion Investment Co | 2033920 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 220335 | 17470362 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Basecamp Wealth Advisors LLC | 2115254 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 98 | 7770 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Global Retirement Partners, LLC | 1749744 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2282 | 180940 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Atle Fund Management AB | 1381843 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 137131 | 10873116 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| CAPITAL FUND MANAGEMENT S.A. | 1323645 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 329554 | 26130336 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| CANADA PENSION PLAN INVESTMENT BOARD | 1283718 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 33300 | 2640357 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BAMCO INC /NY/ | 1017918 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14000 | 1110060 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC | 922127 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 31299 | 2481698 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Artia Global Partners LP | 1937964 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 144376 | 11447573 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Golden State Wealth Management, LLC | 1776033 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 376 | 29814 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| CITIGROUP INC | 831001 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 151300 | 11996577 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| SIGNATUREFD, LLC | 1456048 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1880 | 149065 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| LAZARD ASSET MANAGEMENT LLC | 1207017 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 132480 | 10504339 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1300400 | 103108716 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| CoreCap Advisors, LLC | 1902501 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 370 | 29337 | — | — | — | Jul 6, 2026 | SEC_13F_DATASET |
| Ares Systematic Credit Ltd | 2135379 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100000 | 155813 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| PICTON MAHONEY ASSET MANAGEMENT | 1539041 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5000000 | 7766152 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| SHP Wealth Management | 1807060 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4 | 317 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Virtus Investment Advisers, LLC | 19481 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15870 | 1258332 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| VAN ECK ASSOCIATES CORP | 869178 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 57352 | 4547440 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BANK OF NOVA SCOTIA | 9631 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 68548 | 5435171 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Tower Research Capital LLC (TRC) | 1533421 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18 | 1427 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 1556921 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 655454 | 51970948 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Silvant Capital Management LLC | 1738728 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 540 | 42817 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO | 315297 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 90589 | 7183 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Trexquant Investment LP | 1633445 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 31538 | 2500648 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| DCF Advisers, LLC | 1802493 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 37500 | 2973375 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| BLAIR WILLIAM & CO/IL | 902367 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 31606 | 2506078 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| United Financial Planning Group LLC | 2088337 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 158 | 12528 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 1177719 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4233 | 335635 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| INTECH INVESTMENT MANAGEMENT LLC | 1086318 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 26041 | 2064791 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Wealth Enhancement Trust Services, Inc. | 2067696 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2 | 159 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| GROUPAMA ASSET MANAGMENT | 1055969 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 937083 | 75195315 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VOYA INVESTMENT MANAGEMENT LLC | 1068837 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 76655000 | 119438072 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| INCEPTIONR LLC | 1821561 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24251 | 1922862 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| SBI Okasan Asset Management Co.Ltd. | 1535128 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12600 | 1016694 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| &PARTNERS | 107136 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10184 | 807489 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| SIMPLEX TRADING, LLC | 1488542 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 64900 | 5145921 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| MILLENNIUM MANAGEMENT LLC | 1273087 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 288872 | 22904661 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| WOLVERINE ASSET MANAGEMENT LLC | 1279891 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 22340 | 1771339 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.