Alkermes plc. (NASDAQ:ALKS) showed up in the 13F filings of 355 institutional investors as of December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| BlackRock, Inc. | 31 Mar, 2026 | 28,314,410 | 41,998 | 0.15% | $1,001,197,538.00 |
| BAKER BROS. ADVISORS LP | 31 Mar, 2026 | 10,012,267 | 0 | 0.00% | $354,033,761.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 9,511,112 | 9,511,112 | 0.00% | $336,312,920.00 |
| State Street Corp | 31 Mar, 2026 | 9,465,286 | -7,572 | -0.08% | $334,692,513.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 7,427,397 | 7,427,397 | 0.00% | $262,632,758.00 |
| RENAISSANCE TECHNOLOGIES LLC | 31 Mar, 2026 | 6,160,428 | -507,600 | -7.61% | $217,832,734.00 |
| AMERICAN CENTURY COMPANIES INC | 31 Mar, 2026 | 6,072,103 | 115,279 | 1.94% | $214,709,656.00 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 31 Mar, 2026 | 4,664,576 | 4,664,576 | 0.00% | $164,940.00 |
| DIMENSIONAL FUND ADVISORS LP | 31 Mar, 2026 | 4,522,378 | 109,595 | 2.48% | $159,850,354.00 |
| Commodore Capital LP | 31 Mar, 2026 | 4,200,000 | 650,000 | 18.31% | $148,512,000.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 4,182,267 | 101,491 | 2.49% | $147,910,817.00 |
| Jpmorgan Chase & Co | 31 Mar, 2026 | 4,101,789 | -1,082,758 | -20.88% | $123,668,951.00 |
| Deep Track Capital, LP | 31 Mar, 2026 | 3,590,323 | 1,590,323 | 79.52% | $126,953,821.00 |
| WELLINGTON MANAGEMENT GROUP LLP | 31 Mar, 2026 | 2,970,166 | -50,276 | -1.66% | $105,025,069.00 |
| FIRST TRUST ADVISORS LP | 31 Mar, 2026 | 2,968,785 | 1,514,783 | 104.18% | $104,976,237.00 |
| PRIMECAP MANAGEMENT CO/CA/ | 31 Mar, 2026 | 2,539,990 | -24,310 | -0.95% | $89,814,046.00 |
| Nuveen, LLC | 31 Mar, 2026 | 2,460,569 | 33,541 | 1.38% | $87,005,720.00 |
| Holocene Advisors, LP | 31 Mar, 2026 | 2,317,326 | 2,317,326 | 0.00% | $81,940,647.00 |
| CITADEL ADVISORS LLC | 31 Mar, 2026 | 2,241,584 | 1,043,316 | 87.07% | $79,262,410.00 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 31 Mar, 2026 | 2,236,756 | 84,000 | 3.90% | $79,091,692.00 |