CUSIP 462222AD2
IONIS PHARMACEUTICALS INC
98 institutions · $1.04B total · 824,023,065 shares · IONS
| # | Manager | Shares | Value | % of Total | Period |
|---|---|---|---|---|---|
| 1 | Weiss Asset Management LP | 107,295,000 | $132.2M | 13.02% | 2025-09-30 |
| 2 | CAPSTONE INVESTMENT ADVISORS, LLC | 84,949,000 | $116.7M | 10.30% | 2025-12-31 |
| 3 | Voya Investment Management LLC | 53,500,000 | $65.8M | 6.49% | 2025-09-30 |
| 4 | CSS LLC/IL | 44,792,000 | $61.5M | 5.43% | 2025-12-31 |
| 5 | Boussard & Gavaudan Investment Management LLP | 54,910 | $55.6M | 0.00% | 2025-06-30 |
| 6 | DeepCurrents Investment Group LLC | 38,203,000 | $52.7M | 4.63% | 2025-12-31 |
| 7 | STEELHEAD PARTNERS LLC | 50,000,000 | $48.4M | 6.06% | 2024-12-31 |
| 8 | CITADEL ADVISORS LLC | 45,880,000 | $47.3M | 5.56% | 2024-06-30 |
| 9 | Balyasny Asset Management L.P. | 27,500,000 | $37.8M | 3.33% | 2025-12-31 |
| 10 | Shaolin Capital Management LLC | 27,500,000 | $37.7M | 3.33% | 2025-12-31 |
| 11 | D. E. Shaw & Co., Inc. | 25,500,000 | $35.0M | 3.09% | 2025-12-31 |
| 12 | TENOR CAPITAL MANAGEMENT Co., L.P. | 24,300,000 | $33.4M | 2.94% | 2025-12-31 |
| 13 | MILLENNIUM MANAGEMENT LLC | 21,700,000 | $29.8M | 2.63% | 2025-12-31 |
| 14 | TWO SIGMA INVESTMENTS, LP | 20,000,000 | $27.4M | 2.42% | 2025-12-31 |
| 15 | ADVENT CAPITAL MANAGEMENT /DE/ | 19,410,000 | $19.4M | 2.35% | 2024-09-30 |
| 16 | STATE STREET CORP | 13,295,000 | $18.2M | 1.61% | 2025-12-31 |
| 17 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | 16,000,000 | $15.6M | 1.94% | 2024-12-31 |
| 18 | AVIVA PLC | 15,000,000 | $15.4M | 1.82% | 2024-06-30 |
| 19 | Lombard Odier Asset Management (Europe) Ltd | 13,966,000 | $13.9M | 1.69% | 2024-09-30 |
| 20 | SILVERBACK ASSET MANAGEMENT LLC | 12,500,000 | $12.1M | 1.51% | 2024-12-31 |
| 21 | READYSTATE ASSET MANAGEMENT LP | 12,000,000 | $11.6M | 1.45% | 2024-12-31 |
| 22 | BlackRock, Inc. | 7,942,000 | $10.9M | 0.96% | 2025-12-31 |
| 23 | BANK OF MONTREAL /CAN/ | 10,925,000 | $10.6M | 1.32% | 2024-12-31 |
| 24 | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 7,500,000 | $10.3M | 0.91% | 2025-12-31 |
| 25 | BANK OF AMERICA CORP /DE/ | 6,758,000 | $9.3M | 0.82% | 2025-12-31 |
| 26 | M&G PLC | 7,099,000 | $8.7M | 0.86% | 2025-09-30 |
| 27 | DEUTSCHE BANK AG\ | 7,900,000 | $7.8M | 0.95% | 2025-06-30 |
| 28 | Walleye Capital LLC | 7,500,000 | $7.8M | 0.91% | 2024-06-30 |
| 29 | CITIGROUP INC | 5,119,000 | $7.0M | 0.62% | 2025-12-31 |
| 30 | Nuveen Asset Management, LLC | 7,000,000 | $7.0M | 0.84% | 2024-09-30 |
| 31 | Opti Capital Management, LP | 6,468,000 | $6.7M | 0.78% | 2024-06-30 |
| 32 | FMR LLC | 4,739,000 | $6.5M | 0.57% | 2025-12-31 |
| 33 | TORONTO DOMINION BANK | 6,000,000 | $6.2M | 0.72% | 2024-06-30 |
| 34 | Warberg Asset Management LLC | 4,000,000 | $5.5M | 0.48% | 2025-12-31 |
| 35 | BlackRock Inc. | 5,192,000 | $5.3M | 0.63% | 2024-06-30 |
| 36 | SCHRODER INVESTMENT MANAGEMENT GROUP | 4,375,000 | $4.4M | 0.53% | 2024-09-30 |
| 37 | ARISTEIA CAPITAL, L.L.C. | 4,000,000 | $4.1M | 0.48% | 2024-06-30 |
| 38 | MACKAY SHIELDS LLC | 2,676,000 | $3.7M | 0.32% | 2025-12-31 |
| 39 | NEW YORK STATE COMMON RETIREMENT FUND | 3,497,000 | $3.2M | 0.42% | 2025-09-30 |
| 40 | Invesco Ltd. | 2,911,000 | $2.9M | 0.35% | 2024-03-31 |
| 41 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2,500,000 | $2.5M | 0.30% | 2024-03-31 |
| 42 | JPMORGAN CHASE & CO | 2,081,000 | $2.2M | 0.25% | 2024-12-31 |
| 43 | Jefferies Financial Group Inc. | 2,213,000 | $2.1M | 0.26% | 2024-12-31 |
| 44 | OAKTREE CAPITAL MANAGEMENT LP | 1,900,000 | $1.9M | 0.23% | 2024-03-31 |
| 45 | AXA S.A. | 1,790,000 | $1.8M | 0.21% | 2024-12-31 |
| 46 | CAMDEN ASSET MANAGEMENT L P /CA | 1,900,000 | $1.8M | 0.23% | 2024-12-31 |
| 47 | Linden Advisors LP | 1,062,000 | $1.5M | 0.12% | 2025-12-31 |
| 48 | NOMURA HOLDINGS INC | 17,155 | $1.4M | 0.00% | 2025-12-31 |
| 49 | WELLINGTON MANAGEMENT GROUP LLP | 995,000 | $979.5K | 0.12% | 2024-03-31 |
| 50 | UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 761,000 | $758.9K | 0.09% | 2024-09-30 |
| 51 | CREDIT SUISSE AG/ | 761,000 | $729.5K | 0.09% | 2024-03-31 |
| 52 | FIFTH THIRD BANCORP | 5,000 | $613.5K | 0.00% | 2025-09-30 |
| 53 | WELLS FARGO & COMPANY/MN | 426,000 | $586.8K | 0.05% | 2025-12-31 |
| 54 | Kohlberg Kravis Roberts & Co. L.P. | 580,000 | $560.7K | 0.07% | 2024-12-31 |
| 55 | BNP PARIBAS FINANCIAL MARKETS | 526,000 | $521.2K | 0.06% | 2025-03-31 |
| 56 | SSI INVESTMENT MANAGEMENT LLC | 496,000 | $494.6K | 0.06% | 2024-09-30 |
| 57 | JANE STREET GROUP, LLC | 425,000 | $428.8K | 0.05% | 2025-06-30 |
| 58 | BARCLAYS PLC | 417,000 | $421.2K | 0.05% | 2025-12-31 |
| 59 | Verition Fund Management LLC | 405,000 | $405.4K | 0.04% | 2024-09-30 |
| 60 | Central Pacific Bank - Trust Division | 338,000 | $334.3K | 0.04% | 2024-03-31 |
| 61 | Russell Investments Group, Ltd. | 324,000 | $319.6K | 0.03% | 2025-03-31 |
| 62 | Federation des caisses Desjardins du Quebec | 280,000 | $279.7K | 0.03% | 2024-06-30 |
| 63 | Bank of New York Mellon Corp | 200,000 | $275.5K | 0.02% | 2025-12-31 |
| 64 | SEI INVESTMENTS CO | 259,000 | $266.7K | 0.03% | 2024-06-30 |
| 65 | Focus Partners Wealth | 160,000 | $219.2K | 0.01% | 2025-12-31 |
| 66 | Sonora Investment Management Group, LLC | 160,000 | $195.8K | 0.01% | 2025-09-30 |
| 67 | Man Group plc | 136,000 | $187.0K | 0.01% | 2025-12-31 |
| 68 | AQR Arbitrage LLC | 150,000 | $147.6K | 0.01% | 2025-03-31 |
| 69 | Royal Bank of Canada | 100,000 | $137.0K | 0.01% | 2025-12-31 |
| 70 | OPPENHEIMER ASSET MANAGEMENT INC. | 95,000 | $130.2K | 0.01% | 2025-12-31 |
| 71 | FIRST HAWAIIAN BANK | 127,000 | $125.0K | 0.01% | 2024-03-31 |
| 72 | Calamos Wealth Management LLC | 122,000 | $118.2K | 0.01% | 2024-12-31 |
| 73 | MORGAN STANLEY | 80,000 | $109.6K | 0.00% | 2025-12-31 |
| 74 | Calamos Advisors LLC | 66,000 | $90.7K | 0.00% | 2025-12-31 |
| 75 | SHENKMAN CAPITAL MANAGEMENT INC | 68,000 | $83.7K | 0.00% | 2025-09-30 |
| 76 | LAKE STREET ADVISORS GROUP, LLC | 53,000 | $51.0K | 0.00% | 2024-12-31 |
| 77 | CHOREO, LLC | 47,000 | $46.6K | 0.00% | 2024-09-30 |
| 78 | STEPHENS INC /AR/ | 26,000 | $35.6K | 0.00% | 2025-12-31 |
| 79 | Argent Trust Co | 25,000 | $25.1K | 0.00% | 2025-06-30 |
| 80 | Traub Capital Management LLC | 17,000 | $23.3K | 0.00% | 2025-12-31 |
| 81 | INSIGNEO ADVISORY SERVICES, LLC | 23,000 | $22.9K | 0.00% | 2024-09-30 |
| 82 | Balboa Wealth Partners | 15,000 | $20.6K | 0.00% | 2025-12-31 |
| 83 | Marcum Wealth, LLC | 18,000 | $17.9K | 0.00% | 2024-09-30 |
| 84 | LAZARD ASSET MANAGEMENT LLC | 1,193,000 | $16.4K | 0.14% | 2025-12-31 |
| 85 | Daiwa Securities Group Inc. | 10,000,000 | $13.7K | 1.21% | 2025-12-31 |
| 86 | MML INVESTORS SERVICES, LLC | 10,000 | $13.7K | 0.00% | 2025-12-31 |
| 87 | Mint Tower Capital Management B.V. | 5,000,000 | $5.2K | 0.60% | 2024-06-30 |
| 88 | CoreCap Advisors, LLC | 3,000 | $4.1K | 0.00% | 2025-12-31 |
| 89 | COMERICA BANK | 3,000 | $3.0K | 0.00% | 2024-09-30 |
| 90 | US BANCORP \DE\ | 2,000 | $2.7K | 0.00% | 2025-12-31 |
| 91 | Steward Partners Investment Advisory, LLC | 2,000 | $2.7K | 0.00% | 2025-12-31 |
| 92 | Cassady Schiller Wealth Management, LLC | 2,000 | $1.9K | 0.00% | 2024-12-31 |
| 93 | SG Americas Securities, LLC | 12,000 | $1.2K | 0.00% | 2024-06-30 |
| 94 | RAYMOND JAMES FINANCIAL INC | 1,000 | $1.0K | 0.00% | 2025-06-30 |
| 95 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 500,000 | $685 | 0.06% | 2025-12-31 |
| 96 | KBC Group NV | 200,000 | $197 | 0.02% | 2025-03-31 |
| 97 | CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% | 2025-06-30 |
| 98 | Erste Asset Management GmbH | 0 | $0 | 0.00% | 2025-12-31 |