Alkermes plc Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| BLACKROCK, INC. | 08/07/2026 | 29.24 M | $1.53 B | 3.25% | 17.59% |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 08/24/2026 | 10.34 M | $197.41 M | 5,527.68% | 6.22% |
| BAKER BROS. ADVISORS LP | 08/14/2026 | 10.01 M | $524.59 M | 0.00% | 6.02% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 08/13/2026 | 9.49 M | $497.27 M | -0.21% | 5.71% |
| STATE STREET CORP | 08/07/2026 | 9.16 M | $479.97 M | -3.22% | 5.51% |
| VANGUARD CAPITAL MANAGEMENT LLC | 08/13/2026 | 7.52 M | $393.75 M | 1.18% | 4.52% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 08/14/2026 | 6.74 M | $353.00 M | 44.44% | 4.05% |
| RENAISSANCE TECHNOLOGIES LLC | 08/13/2026 | 6.46 M | $338.52 M | 4.88% | 3.89% |
| GEODE CAPITAL MANAGEMENT, LLC | 08/12/2026 | 4.48 M | $234.66 M | 7.07% | 2.69% |
| DIMENSIONAL FUND ADVISORS LP | 08/11/2026 | 4.19 M | $219.79 M | -7.24% | 2.52% |
| DEEP TRACK CAPITAL, LP | 08/14/2026 | 4.00 M | $209.58 M | 11.41% | 2.41% |
| AMERICAN CENTURY COMPANIES INC | 08/12/2026 | 3.95 M | $207.18 M | -34.88% | 2.38% |
| HOLOCENE ADVISORS, LP | 08/14/2026 | 3.60 M | $188.70 M | 55.42% | 2.17% |
| COMMODORE CAPITAL LP | 08/14/2026 | 3.00 M | $157.19 M | -28.57% | 1.81% |
| WELLINGTON MANAGEMENT GROUP LLP | 08/14/2026 | 2.81 M | $147.48 M | -5.23% | 1.69% |
| PRIMECAP MANAGEMENT CO/CA/ | 08/14/2026 | 2.53 M | $132.49 M | -0.45% | 1.52% |
| FIRST TRUST ADVISORS LP | 08/11/2026 | 2.42 M | $126.85 M | -18.45% | 1.46% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 08/14/2026 | 2.34 M | $122.35 M | 4.40% | 1.41% |
| SIXTH STREET PARTNERS MANAGEMENT COMPANY, L.P. | 08/14/2026 | 2.34 M | $122.35 M | 100.00% | 1.41% |
| NUVEEN, LLC | 08/11/2026 | 2.32 M | $121.78 M | -5.54% | 1.40% |
| NORGES BANK | 08/12/2026 | 2.16 M | $113.01 M | 100.00% | 1.30% |
| BVF INC/IL | 08/14/2026 | 2.15 M | $112.90 M | 7.74% | 1.30% |
| GOLDMAN SACHS GROUP INC | 08/14/2026 | 2.02 M | $106.05 M | 7.53% | 1.22% |
| BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | 08/14/2026 | 1.94 M | $101.54 M | 217.69% | 1.17% |
| NORTHERN TRUST CORP | 08/13/2026 | 1.83 M | $95.97 M | 7.93% | 1.10% |
| MORGAN STANLEY | 08/13/2026 | 1.75 M | $91.79 M | 0.91% | 1.05% |
| RTW INVESTMENTS, LP | 08/14/2026 | 1.67 M | $87.62 M | 0.00% | 1.01% |
| CITADEL ADVISORS LLC | 08/14/2026 | 1.65 M | $86.20 M | -26.61% | 0.99% |
| LOOMIS SAYLES & CO L P | 08/14/2026 | 1.59 M | $83.07 M | -11.15% | 0.95% |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 08/14/2026 | 1.37 M | $71.68 M | 100.00% | 0.82% |
| D. E. SHAW & CO., INC. | 08/14/2026 | 1.31 M | $68.74 M | 84.72% | 0.79% |
| DRIEHAUS CAPITAL MANAGEMENT LLC | 08/14/2026 | 1.24 M | $64.91 M | 56.42% | 0.75% |
| VANGUARD FIDUCIARY TRUST CO | 08/13/2026 | 1.18 M | $61.72 M | 4.31% | 0.71% |
| FRANKLIN RESOURCES INC | 08/13/2026 | 1.17 M | $61.31 M | 541.11% | 0.70% |
| BNP PARIBAS ASSET MANAGEMENT HOLDING S.A. | 08/13/2026 | 1.16 M | $60.74 M | 383.67% | 0.70% |
| FMR LLC | 08/13/2026 | 1.13 M | $59.44 M | -14.30% | 0.68% |
| AFFINITY ASSET ADVISORS, LLC | 08/13/2026 | 1.13 M | $58.94 M | -16.67% | 0.68% |
| BANK OF NEW YORK MELLON CORP | 08/06/2026 | 1.10 M | $57.49 M | 5.87% | 0.66% |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 08/14/2026 | 1.09 M | $57.16 M | 21.99% | 0.66% |
| TWO SIGMA INVESTMENTS, LP | 08/14/2026 | 1.04 M | $54.40 M | 33.00% | 0.62% |
| SOLEUS CAPITAL MANAGEMENT, L.P. | 08/11/2026 | 1.03 M | $53.93 M | -47.78% | 0.62% |
| PRINCIPAL FINANCIAL GROUP INC | 08/04/2026 | 983.82 K | $51.55 M | 2.69% | 0.59% |
| MARSHALL WACE, LLP | 08/13/2026 | 969.95 K | $50.83 M | -2.94% | 0.58% |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 08/14/2026 | 950.23 K | $49.79 M | 100.00% | 0.57% |
| BANK OF AMERICA CORP /DE/ | 08/14/2026 | 918.30 K | $48.11 M | -24.16% | 0.55% |
| VICTORY CAPITAL MANAGEMENT INC | 08/07/2026 | 916.71 K | $48.03 M | 196.74% | 0.55% |
| PICTET ASSET MANAGEMENT HOLDING SA | 07/30/2026 | 838.03 K | $43.98 M | -11.06% | 0.50% |
| ARTISAN PARTNERS LIMITED PARTNERSHIP | 08/13/2026 | 831.01 K | $43.54 M | -25.25% | 0.50% |
| PANAGORA ASSET MANAGEMENT INC | 08/06/2026 | 765.54 K | $40.11 M | -17.94% | 0.46% |
| FRAZIER LIFE SCIENCES MANAGEMENT, L.P. | 08/14/2026 | 700.65 K | $36.71 M | 0.00% | 0.42% |
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Alkermes plc institutional Ownership - FAQ's
During the previous two years, 616 institutional investors and hedge funds held shares of Alkermes plc. The most heavily invested institutionals were:
BlackRock, Inc.: 29.24 M
BAKER BROS. ADVISORS LP: 10.01 M
VANGUARD PORTFOLIO MANAGEMENT LLC: 9.49 M
STATE STREET CORP: 9.16 M
VANGUARD CAPITAL MANAGEMENT LLC: 7.52 M
PRICE T ROWE ASSOCIATES INC /MD/: 6.74 M
108.34% of Alkermes plc stock is owned by institutional investors.
Institutional investors have bought a total of 254.29 M shares in the last 24 months. This purchase volume represents approximately $7.23 B in transactions.