AlkermesALKS
13F holders, Q2 2025 (June 30)353holders −18
38new positions
54sold out
7famous investors
$28.61avg. 13F price*
At the end of Q2 2025, 353 institutions reported holding Alkermes PLC (ALKS) in their 13F filings, down 18 from Q1 2025. 38 opened new positions and 54 sold out. The largest holders were BlackRock, Inc. ($797.0M), Vanguard Group Inc. ($529.4M) and T. Rowe Price Associates Inc. ($287.3M). 7 famous investors held it, including Jim Simons / Peter Brown (0.2% of Renaissance Technologies's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Joel Greenblatt (0.0% of Gotham Asset Management's portfolio).
- Company
- Alkermes PLC
- CUSIP
- G01767105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 38 | $90.0M |
| Exits | 54 | $110.8M |
All 13F filers, Q1 2025 → Q2 2025: 13,666,962 shares bought and 16,696,778 shares sold, net −3,029,816 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 353 holders
| BlackRock, Inc. | 0.02% | Add +1.6% | 27,856,163 | $797.0M |
| Vanguard Group Inc. | 0.01% | Add +1.6% | 18,503,074 | $529.4M |
| T. Rowe Price Associates Inc. | 0.03% | Reduce -14.8% | 10,041,900 | $287.3M |
| State Street Corp. | 0.01% | Add +2.3% | 8,208,256 | $234.8M |
| Baker Bros. Advisors LP | 1.78% | Add +43.0% | 6,410,603 | $183.4M |
| Renaissance Technologies | 0.22% | Add +1.2% | 5,810,160 | $166.2M |
| JPMorgan Chase & Co. | 0.01% | Reduce -7.6% | 4,836,294 | $138.4M |
| RTW Investments, LP | 1.91% | Reduce -32.0% | 4,682,289 | $134.0M |
| Geode Capital Management, LLC | 0.01% | Add +2.1% | 4,023,552 | $115.1M |
| American Century Companies Inc. | 0.06% | Add +5.5% | 3,657,223 | $104.6M |
| Dimensional Fund Advisors LP | 0.02% | Add +3.5% | 3,096,637 | $88.6M |
| Primecap Management Co. | 0.07% | Reduce -3.4% | 2,902,510 | $83.0M |
| Avoro Capital Advisors LLC | 1.45% | Add +18.4% | 2,900,000 | $83.0M |
| Holocene Advisors, LP | 0.20% | Add +31.2% | 2,853,768 | $81.6M |
| Commodore Capital LP | 4.95% | Add +25.6% | 2,450,000 | $70.1M |
| Bank of America Corp. | 0.01% | Add +43.0% | 2,155,087 | $61.7M |
| Loomis Sayles & Co. L P | 0.08% | Reduce -13.5% | 2,109,894 | $60.4M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +2.2% | 2,092,049 | $59.9M |
| Nuveen, LLC | 0.02% | Add +1.4% | 2,048,073 | $58.6M |
| Norges Bank | 0.01% | Reduce -2.8% | 1,863,895 | $53.3M |
| Northern Trust Corp. | 0.01% | Reduce -3.4% | 1,813,609 | $51.9M |
| Morgan Stanley | 0.00% | Reduce -16.7% | 1,802,052 | $51.6M |
| Wellington Management Group LLP | 0.01% | Reduce -45.1% | 1,700,103 | $48.6M |
| Goldman Sachs Group Inc. | 0.01% | Add +13.3% | 1,667,697 | $47.7M |
| Artisan Partners Limited Partnership | 0.07% | Reduce -5.8% | 1,541,807 | $44.1M |
| Bank of New York Mellon Corp | 0.01% | Reduce -9.1% | 1,535,886 | $43.9M |
| First Trust Advisors LP | 0.03% | Reduce -13.8% | 1,397,281 | $40.0M |
| Paradigm Biocapital Advisors LP | 1.68% | New | 1,375,569 | $39.4M |
| UBS Group AG | 0.01% | Reduce -55.9% | 1,342,402 | $38.4M |
| FMR LLC | 0.00% | Reduce -17.2% | 1,278,006 | $36.6M |
| BNP Paribas Financial Markets | 0.03% | Add +787.2% | 1,135,478 | $32.5M |
| Frazier Life Sciences Management, L.P. | 1.15% | Add +66.5% | 1,000,647 | $28.6M |
| Affinity Asset Advisors, LLC | 4.41% | No change | 1,000,000 | $28.6M |
| Principal Financial Group Inc. | 0.01% | Reduce -1.5% | 914,795 | $26.2M |
| Pacer Advisors, Inc. | 0.07% | Add +1.9% | 906,957 | $25.9M |
| Panagora Asset Management Inc. | 0.11% | Add +2.0% | 877,174 | $25.1M |
| Driehaus Capital Management LLC | 0.19% | Add +4.3% | 826,811 | $23.7M |
| D. E. Shaw & Co. | 0.02% | Add +75.0% | 820,096 | $23.5M |
| Ameriprise Financial Inc. | 0.01% | Add +33.0% | 706,007 | $20.2M |
| Barclays PLC | 0.01% | Add +65.3% | 694,122 | $19.9M |
| Farallon Capital Management, L.L.C. | 0.09% | Reduce -50.2% | 691,663 | $19.8M |
| Acadian Asset Management LLC | 0.04% | Reduce -22.1% | 687,252 | $19.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +39.2% | 671,429 | $19.2M |
| MetLife Investment Management, LLC | 0.11% | Add +15.7% | 656,648 | $18.8M |
| Public Sector Pension Investment Board | 0.08% | Add +8.8% | 636,913 | $18.2M |
| Invesco Ltd. | 0.00% | Reduce -16.6% | 613,023 | $17.5M |
| Segall Bryant & Hamill, LLC | 0.24% | Add +12.3% | 593,938 | $17.0M |
| Woodline Partners LP | 0.08% | Reduce -24.9% | 558,465 | $16.0M |
| MPM Bioimpact LLC | 2.72% | Add +62.7% | 549,262 | $15.7M |
| Legal & General Group Plc | 0.00% | Reduce -3.1% | 535,342 | $15.3M |
| Voya Investment Management LLC | 0.02% | Add +5.5% | 503,585 | $14.4M |
| EcoR1 Capital, LLC | 0.85% | New | 500,000 | $14.3M |
| Glenmede Investment Management, LP | 0.07% | — | 483,363 | $13.8M |
| Rhumbline Advisers | 0.01% | Add +3.9% | 472,857 | $13.5M |
| Raymond James Financial Inc. | 0.00% | Add +5.8% | 454,417 | $13.0M |
| AQR Capital Management | 0.01% | Reduce -15.0% | 452,522 | $12.9M |
| Rice Hall James & Associates, LLC | 0.65% | Reduce -1.1% | 421,885 | $12.1M |
| Macquarie Group Ltd. | 0.01% | Add +24.8% | 374,324 | $10.7M |
| Canada Pension Plan Investment Board | 0.01% | Add +21.4% | 370,900 | $10.6M |
| Jane Street Group, LLC | 0.02% | Reduce -31.9% | 357,097 | $10.2M |
| Stempoint Capital LP | 3.23% | Add +82.5% | 351,124 | $10.0M |
| Two Sigma Investments, LP | 0.02% | Reduce -41.6% | 325,903 | $9.3M |
| Handelsbanken Fonder AB | 0.03% | Add +46.7% | 318,400 | $9.1M |
| California Public Employees Retirement System | 0.01% | Add +5.2% | 308,542 | $8.8M |
| Swiss National Bank | 0.01% | Add +0.5% | 299,300 | $8.6M |
| Fisher Asset Management | 0.00% | Reduce -9.2% | 291,947 | $8.4M |
| Mackenzie Financial Corp. | 0.01% | Add +22.5% | 290,327 | $8.3M |
| Man Group plc | 0.02% | Add +103.1% | 275,822 | $7.9M |
| Pictet Asset Management Holding SA | 0.01% | Reduce -34.6% | 269,170 | $7.8M |
| Peregrine Capital Management LLC | 0.23% | New | 264,620 | $7.6M |
| C WorldWide Group Holding A/S | 0.10% | No change | 250,000 | $7.2M |
| Victory Capital Management Inc. | 0.00% | Add +98.7% | 240,453 | $6.9M |
| AXA S.A. | 0.02% | Add +0.2% | 236,189 | $6.8M |
| Atle Fund Management AB | 2.78% | Add +5.8% | 227,224 | $6.5M |
| Royal Bank of Canada | 0.00% | Reduce -17.8% | 226,442 | $6.5M |
| Palo Alto Investors LP | 1.35% | Reduce -0.2% | 221,021 | $6.3M |
| S&co Inc. | 0.40% | Reduce -0.6% | 220,585 | $6.3M |
| Sei Investments Co. | 0.01% | Add +2.3% | 216,906 | $6.2M |
| TD Asset Management Inc | 0.01% | Add +5.3% | 216,442 | $6.2M |
| Manufacturers Life Insurance Company, The | 0.01% | Add +6.7% | 208,088 | $6.0M |
| Krensavage Asset Management, LLC | 3.15% | No change | 207,822 | $5.9M |
| Marshall Wace, LLP | 0.01% | New | 207,511 | $5.9M |
| Janus Henderson Group PLC | 0.00% | Reduce -12.2% | 204,595 | $5.9M |
| Susquehanna International Group, LLP | 0.01% | Reduce -11.9% | 204,389 | $5.8M |
| Alliancebernstein L.P. | 0.00% | Reduce -11.6% | 202,180 | $5.8M |
| Neuberger Berman Group LLC | 0.00% | Reduce -1.8% | 196,331 | $5.6M |
| Deutsche Bank AG | 0.00% | Reduce -7.4% | 191,448 | $5.5M |
| Citigroup Inc. | 0.00% | Reduce -48.2% | 187,846 | $5.4M |
| Aberdeen Group plc | 0.01% | Add +13.9% | 178,719 | $5.1M |
| Prudential Financial Inc. | 0.01% | Reduce -1.3% | 176,301 | $5.0M |
| ExodusPoint Capital Management, LP | 0.06% | Add +6.6% | 161,386 | $4.6M |
| Rafferty Asset Management, LLC | 0.02% | Add +7.2% | 161,285 | $4.6M |
| California State Teachers Retirement System | 0.00% | No change | 144,931 | $4.1M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -7.9% | 140,723 | $4.1M |
| New York State Common Retirement Fund | 0.01% | No change | 141,084 | $4.0M |
| Y-Intercept (Hong Kong) Ltd | 0.10% | Add +446.3% | 138,433 | $4.0M |
| Martingale Asset Management L P | 0.09% | Add +45.3% | 135,251 | $3.9M |
| Gotham Asset Management | 0.02% | Add +67.5% | 133,472 | $3.8M |
| Voloridge Investment Management, LLC | 0.01% | Add +31.5% | 131,431 | $3.8M |
| Wedge Capital Management L L P | 0.07% | Add +9.3% | 128,462 | $3.7M |
"% of holder's portfolio" is ALKS's weight in each manager's 13F, not the share of Alkermes PLC the manager owns.