AlkermesALKS
13F holders, Q1 2025 (March 31)371holders +28
58new positions
30sold out
8famous investors
$33.02avg. 13F price*
At the end of Q1 2025, 371 institutions reported holding Alkermes PLC (ALKS) in their 13F filings, up 28 from Q4 2024. 58 opened new positions and 30 sold out. The largest holders were BlackRock, Inc. ($905.0M), Vanguard Group Inc. ($601.4M) and T. Rowe Price Associates Inc. ($389.2M). 8 famous investors held it, including Jim Simons / Peter Brown (0.3% of Renaissance Technologies's portfolio), Joel Greenblatt (0.0% of Gotham Asset Management's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Alkermes PLC
- CUSIP
- G01767105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 58 | $134.6M |
| Exits | 30 | $105.9M |
All 13F filers, Q4 2024 → Q1 2025: 22,404,445 shares bought and 18,415,637 shares sold, net +3,988,808 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 371 holders
| BlackRock, Inc. | 0.02% | Reduce -1.6% | 27,406,368 | $905.0M |
| Vanguard Group Inc. | 0.01% | Reduce -1.5% | 18,212,674 | $601.4M |
| T. Rowe Price Associates Inc. | 0.05% | Reduce -3.8% | 11,788,245 | $389.2M |
| State Street Corp. | 0.01% | Reduce -9.0% | 8,022,670 | $264.9M |
| RTW Investments, LP | 3.48% | Reduce -8.9% | 6,884,698 | $227.3M |
| Renaissance Technologies | 0.29% | Add +4.8% | 5,738,828 | $189.5M |
| JPMorgan Chase & Co. | 0.01% | Add +488.6% | 5,234,995 | $172.9M |
| Baker Bros. Advisors LP | 1.66% | Add +7.2% | 4,483,285 | $148.0M |
| Geode Capital Management, LLC | 0.01% | Add +3.2% | 3,939,694 | $130.1M |
| American Century Companies Inc. | 0.07% | Add +0.4% | 3,465,674 | $114.4M |
| Wellington Management Group LLP | 0.02% | Reduce -55.8% | 3,096,879 | $102.3M |
| UBS Group AG | 0.02% | Add +851.2% | 3,043,209 | $100.5M |
| Primecap Management Co. | 0.08% | Reduce -3.0% | 3,004,095 | $99.2M |
| Dimensional Fund Advisors LP | 0.02% | Reduce -0.9% | 2,991,005 | $98.8M |
| Avoro Capital Advisors LLC | 1.26% | No change | 2,450,000 | $80.9M |
| Loomis Sayles & Co. L P | 0.12% | Add +6.0% | 2,440,283 | $80.6M |
| Holocene Advisors, LP | 0.21% | Add +743.2% | 2,174,602 | $71.8M |
| Morgan Stanley | 0.01% | Add +18.9% | 2,163,599 | $71.4M |
| Charles Schwab Investment Management Inc. | 0.01% | Reduce -1.0% | 2,047,403 | $67.6M |
| Nuveen, LLC | 0.02% | — | 2,019,668 | $66.7M |
| Commodore Capital LP | 4.74% | Reduce -15.2% | 1,950,000 | $64.4M |
| Norges Bank | 0.01% | Reduce -2.8% | 1,916,546 | $63.3M |
| Northern Trust Corp. | 0.01% | Reduce -1.8% | 1,876,890 | $62.0M |
| Bank of New York Mellon Corp | 0.01% | Reduce -20.9% | 1,690,195 | $55.8M |
| Artisan Partners Limited Partnership | 0.09% | Reduce -17.7% | 1,636,269 | $54.0M |
| First Trust Advisors LP | 0.05% | Add +8.5% | 1,621,046 | $53.5M |
| FMR LLC | 0.00% | Add +622.5% | 1,543,058 | $51.0M |
| Bank of America Corp. | 0.00% | Add +277.5% | 1,507,182 | $49.8M |
| Goldman Sachs Group Inc. | 0.01% | Add +2.0% | 1,472,051 | $48.6M |
| Farallon Capital Management, L.L.C. | 0.25% | New | 1,389,800 | $45.9M |
| Affinity Asset Advisors, LLC | 5.47% | Reduce -9.1% | 1,000,000 | $33.0M |
| VIRGINIA RETIREMENT SYSTEMS ET Al | 0.23% | — | 948,133 | $31.3M |
| Principal Financial Group Inc. | 0.02% | Add +3.2% | 928,865 | $30.7M |
| Pacer Advisors, Inc. | 0.08% | Reduce -74.3% | 890,144 | $29.4M |
| Quantedge Capital Pte Ltd | 9.21% | Add +1423.1% | 881,900 | $29.1M |
| Acadian Asset Management LLC | 0.08% | Add +2422.0% | 881,827 | $29.1M |
| Panagora Asset Management Inc. | 0.14% | Reduce -0.3% | 859,982 | $28.4M |
| Driehaus Capital Management LLC | 0.25% | New | 792,831 | $26.2M |
| Woodline Partners LP | 0.16% | Add +0.2% | 744,000 | $24.6M |
| Invesco Ltd. | 0.00% | Add +1.9% | 735,496 | $24.3M |
| Frazier Life Sciences Management, L.P. | 0.91% | No change | 601,129 | $19.8M |
| Public Sector Pension Investment Board | 0.08% | Add +45.2% | 585,262 | $19.3M |
| MetLife Investment Management, LLC | 0.10% | Add +487.0% | 567,621 | $18.7M |
| Two Sigma Investments, LP | 0.04% | Add +69.8% | 557,940 | $18.4M |
| Legal & General Group Plc | 0.01% | Reduce -3.8% | 552,569 | $18.2M |
| AQR Capital Management | 0.02% | Reduce -34.4% | 532,265 | $17.6M |
| Ameriprise Financial Inc. | 0.00% | Add +33.5% | 530,772 | $17.5M |
| Segall Bryant & Hamill, LLC | 0.27% | Reduce -7.2% | 528,821 | $17.5M |
| Jane Street Group, LLC | 0.03% | Add +60.0% | 524,687 | $17.3M |
| Glenmede Trust Co. NA | 0.09% | Reduce -3.1% | 499,019 | $16.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +4.3% | 482,332 | $15.9M |
| Voya Investment Management LLC | 0.02% | Add +6.0% | 477,183 | $15.8M |
| D. E. Shaw & Co. | 0.02% | Reduce -15.7% | 468,481 | $15.5M |
| Ensign Peak Advisors, Inc | 0.03% | Add +631.6% | 460,300 | $15.2M |
| Rhumbline Advisers | 0.01% | Reduce -2.0% | 455,197 | $15.0M |
| Raymond James Financial Inc. | 0.01% | Add +0.5% | 429,482 | $14.2M |
| Rice Hall James & Associates, LLC | 0.83% | Reduce -0.8% | 426,585 | $14.1M |
| Barclays PLC | 0.01% | Reduce -1.4% | 419,951 | $13.9M |
| Pictet Asset Management Holding SA | 0.02% | Reduce -49.8% | 411,321 | $13.7M |
| Citigroup Inc. | 0.01% | Add +9.3% | 362,385 | $12.0M |
| MPM Bioimpact LLC | 1.92% | New | 337,603 | $11.1M |
| Fisher Asset Management | 0.00% | Reduce -2.9% | 321,681 | $10.6M |
| Canada Pension Plan Investment Board | 0.01% | Add +3.4% | 305,500 | $10.1M |
| Macquarie Group Ltd. | 0.01% | No change | 300,000 | $9.9M |
| Swiss National Bank | 0.01% | Reduce -3.2% | 297,800 | $9.8M |
| California Public Employees Retirement System | 0.01% | Add +1.2% | 293,190 | $9.7M |
| Royal Bank of Canada | 0.00% | Add +117.2% | 275,526 | $9.1M |
| C WorldWide Group Holding A/S | 0.10% | No change | 250,000 | $8.3M |
| Mackenzie Financial Corp. | 0.01% | Reduce -28.8% | 237,004 | $7.8M |
| AXA S.A. | 0.03% | Reduce -19.6% | 235,809 | $7.8M |
| Janus Henderson Group PLC | 0.00% | Add +219.2% | 232,944 | $7.7M |
| Susquehanna International Group, LLP | 0.01% | Add +100.5% | 232,025 | $7.7M |
| Alliancebernstein L.P. | 0.00% | Reduce -41.6% | 228,596 | $7.5M |
| S&co Inc. | 0.49% | Add +3.5% | 221,960 | $7.3M |
| Palo Alto Investors LP | 1.39% | Reduce -23.4% | 221,513 | $7.3M |
| Two Sigma Advisers, LP | 0.02% | Add +961.4% | 219,700 | $7.3M |
| Handelsbanken Fonder AB | 0.03% | No change | 217,000 | $7.2M |
| Atle Fund Management AB | 3.13% | Reduce -19.4% | 214,778 | $7.1M |
| Krensavage Asset Management, LLC | 3.79% | Reduce -12.7% | 207,822 | $6.9M |
| Deutsche Bank AG | 0.00% | Reduce -7.9% | 206,835 | $6.8M |
| TD Asset Management Inc | 0.01% | Reduce -7.3% | 205,642 | $6.8M |
| Sei Investments Co. | 0.01% | Add +181.2% | 211,997 | $6.7M |
| Neuberger Berman Group LLC | 0.01% | Add +1524.5% | 199,977 | $6.6M |
| Manufacturers Life Insurance Company, The | 0.01% | Reduce -0.9% | 194,992 | $6.4M |
| Stempoint Capital LP | 2.03% | Reduce -53.9% | 192,352 | $6.4M |
| LSV Asset Management | 0.01% | Reduce -50.9% | 182,965 | $6.0M |
| Prudential Financial Inc. | 0.01% | Reduce -9.6% | 178,641 | $5.9M |
| Millennium Management | 0.01% | Reduce -72.3% | 177,105 | $5.8M |
| Algert Global LLC | 0.14% | New | 176,859 | $5.8M |
| Teachers Retirement System of the State of Kentucky | 0.05% | Reduce -2.6% | 174,400 | $5.8M |
| Informed Momentum Co LLC | 0.91% | New | 159,055 | $5.3M |
| Aberdeen Group plc | 0.01% | Reduce -35.8% | 156,867 | $5.2M |
| Qube Research & Technologies Ltd | 0.01% | Reduce -16.3% | 156,476 | $5.2M |
| Russell Investments Group, Ltd. | 0.01% | Add +2986.2% | 152,859 | $5.1M |
| Van Eck Associates Corp. | 0.01% | Add +10.8% | 152,391 | $5.0M |
| ExodusPoint Capital Management, LP | 0.07% | New | 151,396 | $5.0M |
| Rafferty Asset Management, LLC | 0.02% | Reduce -28.2% | 150,448 | $5.0M |
| Integral Health Asset Management, LLC | 0.55% | New | 150,000 | $5.0M |
| Schonfeld Strategic Advisors LLC | 0.03% | Add +1380.2% | 145,071 | $4.8M |
| California State Teachers Retirement System | 0.01% | Reduce -1.2% | 144,931 | $4.8M |
"% of holder's portfolio" is ALKS's weight in each manager's 13F, not the share of Alkermes PLC the manager owns.