Ionis Pharmaceuticals Inc Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| FMR LLC | 05/15/2026 | 24.56 M | $1.84 B | 2.01% | 15.35% |
| CAPITAL WORLD INVESTORS | 05/13/2026 | 21.19 M | $1.59 B | 17.96% | 13.24% |
| BLACKROCK, INC. | 05/13/2026 | 10.44 M | $784.13 M | -1.93% | 6.53% |
| 05/08/2026 | 7.81 M | $586.37 M | 100.00% | 4.88% | |
| 05/15/2026 | 7.12 M | $534.52 M | 100.00% | 4.45% | |
| WELLINGTON MANAGEMENT GROUP LLP | 05/15/2026 | 6.39 M | $479.96 M | 2.10% | 3.99% |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 05/15/2026 | 6.16 M | $462.48 M | -32.38% | 3.85% |
| TWO SIGMA INVESTMENTS, LP | 05/15/2026 | 5.86 M | $439.85 M | 120.32% | 3.66% |
| STATE STREET CORP | 05/15/2026 | 4.00 M | $300.03 M | 0.52% | 2.50% |
| GEODE CAPITAL MANAGEMENT, LLC | 05/15/2026 | 3.98 M | $305.20 M | 26.53% | 2.49% |
| ROYAL BANK OF CANADA | 05/15/2026 | 3.80 M | $285.48 M | 239.81% | 2.38% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 05/15/2026 | 3.03 M | $227.17 M | 1.25% | 1.89% |
| JPMORGAN CHASE & CO | 05/13/2026 | 2.36 M | $171.41 M | 2.55% | 1.48% |
| TWEEDY, BROWNE CO LLC | 05/06/2026 | 2.28 M | $170.88 M | -7.68% | 1.42% |
| ARTISAN PARTNERS LIMITED PARTNERSHIP | 05/13/2026 | 2.06 M | $154.56 M | 74.22% | 1.29% |
| BAKER BROS. ADVISORS LP | 05/15/2026 | 2.05 M | $153.76 M | 14.28% | 1.28% |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 05/15/2026 | 1.98 M | $148.65 M | 0.00% | 1.24% |
| DEEP TRACK CAPITAL, LP | 05/15/2026 | 1.95 M | $146.43 M | 14.71% | 1.22% |
| BELLEVUE GROUP AG | 05/15/2026 | 1.82 M | $136.56 M | -62.13% | 1.14% |
| GOLDMAN SACHS GROUP INC | 05/15/2026 | 1.70 M | $127.64 M | 98.59% | 1.06% |
| AMERICAN CENTURY COMPANIES INC | 05/15/2026 | 1.66 M | $124.94 M | 2.89% | 1.04% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 05/15/2026 | 1.58 M | $118.89 M | 2.69% | 0.99% |
| FRANKLIN RESOURCES INC | 05/13/2026 | 1.58 M | $118.27 M | 19.20% | 0.98% |
| UBS ASSET MANAGEMENT AMERICAS INC | 05/13/2026 | 1.48 M | $110.81 M | 6.27% | 0.92% |
| PICTET ASSET MANAGEMENT HOLDING SA | 04/22/2026 | 1.43 M | $107.08 M | 1.16% | 0.90% |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 05/15/2026 | 1.40 M | $105.43 M | -4.01% | 0.88% |
| INVESCO LTD. | 05/12/2026 | 1.28 M | $95.92 M | 0.64% | 0.80% |
| MILLENNIUM MANAGEMENT LLC | 05/15/2026 | 1.05 M | $78.96 M | 1,027.48% | 0.66% |
| MORGAN STANLEY | 05/15/2026 | 1.03 M | $77.08 M | 0.65% | 0.64% |
| VANGUARD FIDUCIARY TRUST CO | 05/08/2026 | 1.02 M | $76.92 M | 100.00% | 0.64% |
| CITADEL ADVISORS LLC | 05/15/2026 | 942.53 K | $70.77 M | -55.85% | 0.59% |
| BNP PARIBAS ASSET MANAGEMENT HOLDING S.A. | 05/14/2026 | 907.53 K | $68.14 M | -32.92% | 0.57% |
| CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD. | 05/11/2026 | 874.09 K | $65.64 M | -18.79% | 0.55% |
| NORTHERN TRUST CORP | 05/14/2026 | 868.18 K | $65.19 M | 2.53% | 0.54% |
| BANK OF AMERICA CORP /DE/ | 05/18/2026 | 840.60 K | $63.12 M | 7.28% | 0.53% |
| POLAR CAPITAL HOLDINGS PLC | 05/15/2026 | 829.51 K | $62.29 M | -37.79% | 0.52% |
| GROUPAMA ASSET MANAGMENT | 05/22/2026 | 824.54 K | $61.91 M | 7.52% | 0.52% |
| UBS GROUP AG | 05/05/2026 | 808.44 K | $60.71 M | -22.64% | 0.51% |
| MACQUARIE MANAGEMENT HOLDINGS, INC. | 05/15/2026 | 785.28 K | $58.97 M | -9.20% | 0.49% |
| GW&K INVESTMENT MANAGEMENT, LLC | 05/13/2026 | 779.35 K | $58.52 M | -0.93% | 0.49% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 05/15/2026 | 755.80 K | $56.75 M | 44.37% | 0.47% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 05/14/2026 | 737.86 K | $55.41 M | -30.61% | 0.46% |
| SQUAREPOINT OPS LLC | 05/15/2026 | 695.28 K | $52.21 M | 59.37% | 0.43% |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 05/15/2026 | 672.86 K | $50.52 M | 15.02% | 0.42% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 05/14/2026 | 666.12 K | $50.02 M | -18.04% | 0.42% |
| AMERIPRISE FINANCIAL INC | 05/15/2026 | 660.14 K | $49.57 M | 10.25% | 0.41% |
| NUVEEN, LLC | 04/30/2026 | 648.50 K | $48.70 M | -1.86% | 0.41% |
| EVERSEPT PARTNERS, LP | 05/15/2026 | 632.10 K | $47.46 M | 17.44% | 0.40% |
| EVENTIDE ASSET MANAGEMENT, LLC | 05/15/2026 | 575.00 K | $43.18 M | 0.00% | 0.36% |
| TD ASSET MANAGEMENT INC | 05/11/2026 | 529.95 K | $39.79 M | -31.46% | 0.33% |
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Ionis Pharmaceuticals Inc institutional Ownership - FAQ's
During the previous two years, 696 institutional investors and hedge funds held shares of Ionis Pharmaceuticals Inc. The most heavily invested institutionals were:
FMR LLC: 24.56 M
Capital World Investors: 21.19 M
BlackRock, Inc.: 10.44 M
WELLINGTON MANAGEMENT GROUP LLP: 6.39 M
T. Rowe Price Investment Management, Inc.: 6.16 M
TWO SIGMA INVESTMENTS, LP: 5.86 M
107.87% of Ionis Pharmaceuticals Inc stock is owned by institutional investors.
Institutional investors have bought a total of 213.86 M shares in the last 24 months. This purchase volume represents approximately $16.12 B in transactions.