Institutional Ownership
Alkermes PLC
CUSIP G01767105SHSALKSQ1 2026
13D / 13G Filings
47
Schedule 13D/13G on record
Beneficial Filers
11
Distinct reporting persons
Largest Stake
15.8%
Max % of class reported
Institutional Holders
378
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
47 filings · latest Feb 17, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 17, 2026 | Baker Bros. Advisors LP | 13G | 6.1% | 10.01M | SEC |
| 2 | Nov 10, 2025 | State Street Corporation | 13G | 5.2% | 8.54M | SEC |
| 3 | Aug 14, 2025 | T. Rowe Price Associates, Inc. | 13G/A | 6.1% | 10.04M | SEC |
| 4 | May 13, 2025 | State Street Corporation | 13G | 4.9% | 8.02M | SEC |
| 5 | Apr 28, 2025 | Blackrock, Inc. | 13G/A | 15.8% | 25.64M | SEC |
| 6 | Feb 10, 2025 | Wellington Management Group LLP | 13G/A | 4.3% | 7.01M | SEC |
| 7 | Nov 14, 2024 | Price T Rowe Associates Inc /Md/ | 13G | 7.9% | 13.00M | SEC |
| 8 | Nov 12, 2024 | Vanguard Group Inc | 13G/A | 11.5% | 18.97M | SEC |
| 9 | Nov 8, 2024 | Wellington Management Group LLP | 13G/A | 7.7% | 12.66M | SEC |
| 10 | Nov 4, 2024 | Vanguard Group Inc | 13G | 11.5% | 18.97M | SEC |
37 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Alkermes PLC.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 28.31M | $1.00B |
| 2 | Baker Bros. Advisors LP | 10.01M | $354.03M |
| 3 | State Street Corp | 9.47M | $334.69M |
| 4 | Renaissance Technologies LLC | 6.16M | $217.83M |
| 5 | American Century Companies Inc | 6.07M | $214.71M |
| 6 | Dimensional Fund Advisors LP | 4.52M | $159.85M |
| 7 | Commodore Capital LP | 4.20M | $148.51M |
| 8 | Geode Capital Management, LLC | 4.18M | $147.91M |
| 9 | Deep Track Capital, LP | 3.59M | $126.95M |
| 10 | Jpmorgan Chase & Co | 4.10M | $123.67M |