IONS
IONIS PHARMACEUTICALS INCCompany with tickers: IONS
CIK
874015
CUSIP
462222100
Shares Outstanding
165,192,011
Price
Holdings
Short Volume
Short Interest
Fails to Deliver
SEC Filings
Earnings Calls
Insider Trading
Congress Trades
Report Date:
Holders: 486
Total Value: $12,711,706,189
Total Shares: 160,683,940
Showing top 100 of 486 holders by value
| Holder | Value (USD) | Shares | Type | Discretion | Filed | Action |
|---|---|---|---|---|---|---|
| FMR LLC | $1,904,343,909 | 24,072,101 | Shares | Defined | 2026-02-17 | View |
| Capital World Investors | $1,420,918,363 | 17,961,299 | Shares | Defined | 2026-02-11 | View |
| VANGUARD GROUP INC | $1,201,768,870 | 15,191,112 | Shares | Sole | 2026-01-29 | View |
| BlackRock, Inc. | $842,352,434 | 10,647,863 | Shares | Sole | 2026-02-12 | View |
| WELLINGTON MANAGEMENT GROUP LLP | $495,254,305 | 6,260,325 | Shares | Defined | 2026-02-17 | View |
| Bellevue Group AG | $379,901,962 | 4,802,199 | Shares | Defined | 2026-02-17 | View |
| STATE STREET CORP | $314,451,570 | 3,974,865 | Shares | Defined | 2026-02-13 | View |
| GEODE CAPITAL MANAGEMENT, LLC | $249,105,443 | 3,148,849 | Shares | Defined | 2026-02-09 | View |
| TWO SIGMA ADVISERS, LP | $241,452,501 | 3,052,111 | Shares | Sole | 2026-02-17 | View |
| PRICE T ROWE ASSOCIATES INC /MD/ | $236,368,022 | 2,987,840 | Shares | Sole | 2026-02-17 | View |
| TWO SIGMA INVESTMENTS, LP | $210,325,485 | 2,658,646 | Shares | Sole | 2026-02-17 | View |
| Tweedy, Browne Co LLC | $195,000,612 | 2,464,930 | Shares | Sole | 2026-02-03 | View |
| JPMORGAN CHASE & CO | $182,332,089 | 2,304,792 | Shares | Other | 2026-02-11 | View |
| CITADEL ADVISORS LLC | $168,871,053 | 2,134,636 | Shares | Defined | 2026-02-17 | View |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | $156,611,614 | 1,979,669 | Shares | Defined | 2026-02-17 | View |
| BAKER BROS. ADVISORS LP | $141,752,541 | 1,791,841 | Shares | Sole | 2026-02-17 | View |
| Deep Track Capital, LP | $134,487,000 | 1,700,000 | Shares | Sole | 2026-02-13 | View |
| AMERICAN CENTURY COMPANIES INC | $127,929,255 | 1,617,106 | Shares | Defined | 2026-02-13 | View |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $121,975,041 | 1,541,841 | Shares | Sole | 2026-02-13 | View |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $115,714,671 | 1,462,706 | Shares | Sole | 2026-02-17 | View |
| Pictet Asset Management Holding SA | $112,216,823 | 1,418,491 | Shares | Sole | 2026-01-29 | View |
| UBS ASSET MANAGEMENT AMERICAS INC | $109,849,531 | 1,388,567 | Shares | Defined | 2026-02-13 | View |
| Polar Capital Holdings Plc | $105,487,172 | 1,333,424 | Shares | Defined | 2026-02-17 | View |
| FRANKLIN RESOURCES INC | $104,531,602 | 1,321,345 | Shares | Defined | 2026-02-11 | View |
| Invesco Ltd. | $100,413,529 | 1,269,290 | Shares | Defined | 2026-02-19 | View |
| Artisan Partners Limited Partnership | $93,461,819 | 1,181,416 | Shares | Sole | 2026-02-17 | View |
| ROYAL BANK OF CANADA | $88,508,027 | 1,118,797 | Shares | Defined | 2026-02-17 | View |
| Connor, Clark & Lunn Investment Management Ltd. | $85,151,630 | 1,076,370 | Shares | Sole | 2026-02-10 | View |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $84,119,798 | 1,063,327 | Shares | Defined | 2026-02-13 | View |
| UBS Group AG | $82,673,193 | 1,045,041 | Shares | Defined | 2026-01-29 | View |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $68,421,606 | 864,892 | Shares | Defined | 2026-02-17 | View |
| GOLDMAN SACHS GROUP INC | $67,715,469 | 855,966 | Shares | Defined | 2026-02-10 | View |
| NOMURA HOLDINGS INC | $67,149,754 | 848,815 | Shares | Defined | 2026-02-17 | View |
| NORTHERN TRUST CORP | $66,983,858 | 846,718 | Shares | Defined | 2026-02-17 | View |
| BARCLAYS PLC | $66,679,524 | 842,871 | Shares | Sole | 2026-02-13 | View |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $64,296,415 | 812,747 | Shares | Sole | 2026-01-22 | View |
| GW&K Investment Management, LLC | $62,233,305 | 786,668 | Shares | Sole | 2026-02-11 | View |
| BANK OF AMERICA CORP /DE/ | $61,988,930 | 783,579 | Shares | Defined | 2026-02-17 | View |
| TD ASSET MANAGEMENT INC | $61,166,586 | 773,184 | Shares | Sole | 2026-02-10 | View |
| GROUPAMA ASSET MANAGMENT | $60,668,588 | 766,889 | Shares | Sole | 2026-02-27 | View |
| MORGAN STANLEY | $60,193,288 | 760,881 | Shares | Defined | 2026-02-13 | View |
| Candriam Luxembourg S.C.A. | $53,607,230 | 677,629 | Shares | Sole | 2026-02-13 | View |
| Nuveen, LLC | $52,273,434 | 660,769 | Shares | Defined | 2026-02-12 | View |
| AMERIPRISE FINANCIAL INC | $47,366,953 | 598,748 | Shares | Defined | 2026-02-17 | View |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $46,276,976 | 584,970 | Shares | Sole | 2026-02-17 | View |
| EVENTIDE ASSET MANAGEMENT, LLC | $45,488,250 | 575,000 | Shares | Sole | 2026-02-13 | View |
| Tri Locum Partners LP | $44,078,035 | 557,174 | Shares | Sole | 2026-02-17 | View |
| Eversept Partners, LP | $42,578,425 | 538,218 | Shares | Sole | 2026-02-17 | View |
| FIRST TRUST ADVISORS LP | $41,551,657 | 525,239 | Shares | Sole | 2026-02-13 | View |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $41,414,085 | 523,500 | Shares | Other | 2026-02-17 | View |
| Alyeska Investment Group, L.P. | $38,108,157 | 481,711 | Shares | Sole | 2026-02-13 | View |
| Hudson Bay Capital Management LP | $37,577,250 | 475,000 | Shares | Sole | 2026-02-13 | View |
| PINNACLE ASSOCIATES LTD | $36,546,288 | 461,968 | Shares | Sole | 2026-02-05 | View |
| AMUNDI | $36,465,517 | 460,947 | Shares | Defined | 2026-02-17 | View |
| Squarepoint Ops LLC | $34,514,031 | 436,279 | Shares | Defined | 2026-02-13 | View |
| ARK Investment Management LLC | $33,460,998 | 422,968 | Shares | Sole | 2026-02-11 | View |
| TEACHER RETIREMENT SYSTEM OF TEXAS | $33,455,539 | 422,899 | Shares | Sole | 2026-01-28 | View |
| BOONE CAPITAL MANAGEMENT LLC | $33,054,768 | 417,833 | Shares | Sole | 2026-02-17 | View |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $31,025,201 | 392,178 | Shares | Defined | 2026-02-13 | View |
| C WorldWide Group Holding A/S | $28,954,260 | 366,000 | Shares | Defined | 2026-02-04 | View |
| Jain Global LLC | $28,183,649 | 356,259 | Shares | Sole | 2026-02-17 | View |
| ALLIANCEBERNSTEIN L.P. | $27,043,674 | 341,849 | Shares | Defined | 2026-02-17 | View |
| BNP PARIBAS ARBITRAGE, SA | $26,470,838 | 334,608 | Shares | Defined | 2026-02-10 | View |
| D. E. Shaw & Co., Inc. | $26,328,045 | 332,803 | Shares | Defined | 2026-02-17 | View |
| Legal & General Group Plc | $25,722,457 | 325,148 | Shares | Defined | 2026-02-09 | View |
| NORGES BANK | $25,327,857 | 320,160 | Shares | Sole | 2026-02-10 | View |
| Bank of New York Mellon Corp | $24,693,474 | 312,141 | Shares | Defined | 2026-02-10 | View |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $23,733,000 | 300,000 | Shares | Sole | 2026-02-17 | View |
| Swiss National Bank | $23,614,335 | 298,500 | Shares | Sole | 2026-02-12 | View |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $23,108,031 | 292,100 | Shares | Other | 2026-02-17 | View |
| WELLS FARGO & COMPANY/MN | $22,154,358 | 280,045 | Shares | Defined | 2026-02-13 | View |
| Zurich Insurance Group Ltd/FI | $20,712,580 | 261,820 | Shares | Defined | 2026-02-17 | View |
| Balyasny Asset Management LLC | $20,616,066 | 260,600 | Shares | Sole | 2026-02-17 | View |
| RAYMOND JAMES FINANCIAL INC | $20,347,880 | 257,210 | Shares | Defined | 2026-02-18 | View |
| MARSHALL WACE, LLP | $20,325,969 | 256,933 | Shares | Other | 2026-02-13 | View |
| NEW YORK STATE COMMON RETIREMENT FUND | $19,132,990 | 241,853 | Shares | Sole | 2026-02-12 | View |
| Privium Fund Management B.V. | $19,051,586 | 240,824 | Shares | Sole | 2026-02-03 | View |
| Davern Capital Partners, LP | $18,865,915 | 238,477 | Shares | Sole | 2026-02-13 | View |
| Orion Investment Co | $17,812,486 | 225,161 | Shares | Sole | 2026-02-11 | View |
| RENAISSANCE TECHNOLOGIES LLC | $17,689,549 | 223,607 | Shares | Sole | 2026-02-12 | View |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $17,370,499 | 219,574 | Shares | Defined | 2026-01-28 | View |
| DAVENPORT & Co LLC | $17,237,831 | 217,897 | Shares | Sole | 2026-01-12 | View |
| CI Private Wealth, LLC | $17,003,586 | 214,936 | Shares | Other | 2026-02-19 | View |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM | $16,879,542 | 213,368 | Shares | Sole | 2026-02-12 | View |
| TOCQUEVILLE ASSET MANAGEMENT L.P. | $16,117,080 | 203,730 | Shares | Sole | 2026-02-12 | View |
| Ikarian Capital, LLC | $15,983,226 | 202,038 | Shares | Sole | 2026-02-18 | View |
| SECTOR GAMMA AS | $14,633,530 | 184,977 | Shares | Sole | 2026-02-12 | View |
| Colony Group, LLC | $14,383,542 | 181,817 | Shares | Sole | 2026-02-13 | View |
| DIMENSIONAL FUND ADVISORS LP | $13,926,126 | 176,035 | Shares | Sole | 2026-02-12 | View |
| RHUMBLINE ADVISERS | $13,874,865 | 175,387 | Shares | Sole | 2026-02-13 | View |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | $13,263,345 | 167,657 | Shares | Defined | 2026-02-17 | View |
| GOLDMAN SACHS GROUP INC | $13,155,993 | 166,300 | Shares | Defined | 2026-02-10 | View |
| Man Group plc | $13,135,582 | 166,042 | Shares | Defined | 2026-02-17 | View |
| Sicart Associates LLC | $12,938,994 | 163,557 | Shares | Sole | 2026-01-14 | View |
| Rhenman & Partners Asset Management AB | $12,538,935 | 158,500 | Shares | Sole | 2026-02-13 | View |
| CenterBook Partners LP | $12,178,905 | 153,949 | Shares | Sole | 2026-02-11 | View |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $12,122,895 | 153,241 | Shares | Defined | 2026-02-13 | View |
| DEUTSCHE BANK AG\ | $11,822,434 | 149,443 | Shares | Sole | 2026-02-11 | View |
| GREAT LAKES ADVISORS, LLC | $11,801,629 | 149,180 | Shares | Sole | 2026-02-12 | View |
| BARCLAYS PLC | $11,621,259 | 146,900 | Shares | Sole | 2026-02-13 | View |