Alkermes plc.
ALKS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001520262
In the last 90 days, Alkermes plc. insiders filed 0 open-market purchases and 7 sales; 425 institutions reported holding it in 13F filings for Q2 2026, worth $9.32B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Alkermes plc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 366
- +12 vs. Q3 2025
- Shares held
- 180.4M
- +11.5M (+6.8%) vs. Q3 2025
- Total value
- $5.05B
- −$19.2M (−0.4%) vs. Q3 2025
- New holders
- 59
- 144 more added
- Sold out
- 47
- 124 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ALKS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 425 | $9.32B |
| Q1 2026 | 390 | $6.22B |
| Q4 2025 | 366 | $5.05B |
| Q3 2025 | 358 | $5.09B |
| Q2 2025 | 353 | $4.84B |
| Q1 2025 | 371 | $5.69B |
| Q4 2024 | 343 | $4.81B |
| Q3 2024 | 338 | $5.01B |
| Q2 2024 | 323 | $4.32B |
| Q1 2024 | 337 | $4.77B |
| Q4 2023 | 302 | $4.87B |
| Q3 2023 | 309 | $4.59B |
| Q2 2023 | 293 | $5.03B |
| Q1 2023 | 269 | $4.56B |
| Q4 2022 | 279 | $4.24B |
| Q3 2022 | 275 | $3.57B |
| Q2 2022 | 276 | $4.67B |
| Q1 2022 | 249 | $4.21B |
| Q4 2021 | 219 | $3.68B |
| Q3 2021 | 227 | $4.77B |
| Q2 2021 | 226 | $3.95B |
| Q1 2021 | 200 | $2.95B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Alkermes plc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| California State Teachers Retirement System | 148,793 | $4.16M | 0.00% | −116−0.1% | Reduced |
| Janus Henderson Group PLC | 145,804 | $4.08M | 0.00% | −198,686−57.7% | Reduced |
| Polygon Management Ltd. | 141,172 | $3.95M | 0.83% | +51,560+57.5% | Added |
| Rock Springs Capital Management LP | 139,228 | $3.90M | 0.20% | +32,691+30.7% | Added |
| Alps Advisors Inc | 135,379 | $3.79M | 0.02% | +57,547+73.9% | Added |
| Deutsche Bank AG | 134,461 | $3.76M | 0.00% | −71,961−34.9% | Reduced |
| Rhenman & Partners Asset Management AB | 133,250 | $3.73M | 0.35% | +39,250+41.8% | Added |
| State Board of Administration of Florida Retirement System | 131,696 | $3.68M | 0.01% | 00.0% | Unchanged |
| DAFNA Capital Management LLC | 130,248 | $3.64M | 0.85% | −4,500−3.3% | Reduced |
| Marshall Wace, LLP | 129,899 | $3.63M | 0.00% | +129,899 | New |
| Colony Group, LLC | 124,041 | $3.47M | 0.00% | +124,041 | New |
| Thrivent Financial for Lutherans | 116,573 | $3.26M | 0.01% | −5,636−4.6% | Reduced |
| Manufacturers Life Insurance Company, The | 113,734 | $3.18M | 0.00% | −31,459−21.7% | Reduced |
| Assenagon Asset Management S.A. | 110,282 | $3.09M | 0.00% | +3,721+3.5% | Added |
| Krensavage Asset Management, LLC | 107,822 | $3.02M | 1.07% | −100,000−48.1% | Reduced |
| Hussman Strategic Advisors, Inc. | 105,000 | $2.94M | 0.71% | −21,000−16.7% | Reduced |
| Sio Capital Management, LLC | 95,353 | $2.67M | 0.44% | −579,487−85.9% | Reduced |
| Los Angeles Capital Management LLC | 86,368 | $2.66M | 0.01% | +833+1.0% | Added |
| Knott David M Jr | 95,000 | $2.66M | 1.23% | +75,700+392.2% | Added |
| Mackenzie Financial Corp | 95,447 | $2.65M | 0.00% | −346,903−78.4% | Reduced |
| State of Wisconsin Investment Board | 93,233 | $2.61M | 0.01% | −6,703−6.7% | Reduced |
| State of Alaska, Department of Revenue | 93,027 | $2.60M | 0.03% | +1,310+1.4% | Added |
| Illinois Municipal Retirement Fund | 91,479 | $2.56M | 0.03% | −137−0.1% | Reduced |
| O'Shaughnessy Asset Management, LLC | 90,574 | $2.53M | 0.01% | −358−0.4% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 87,259 | $2.44M | 0.00% | +2,682+3.2% | Added |
| Zacks Investment Management | 84,361 | $2.36M | 0.02% | +84,361 | New |
| Tudor Investment Corp Et Al | 82,720 | $2.31M | 0.01% | +26,337+46.7% | Added |
| Vident Advisory, LLC | 82,294 | $2.30M | 0.02% | +864+1.1% | Added |
| Eagle Health Investments LP | 81,800 | $2.29M | 0.50% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 81,100 | $2.27M | 0.01% | +700+0.9% | Added |
| Profund Advisors LLC | 80,624 | $2.26M | 0.07% | +36,067+80.9% | Added |
| State of Tennessee, Treasury Department | 66,414 | $2.25M | 0.01% | −7,401−10.0% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 79,336 | $2.22M | 0.05% | +26,269+49.5% | Added |
| Pathstone Holdings, LLC | 78,181 | $2.19M | 0.01% | −3,520−4.3% | Reduced |
| New York State Teachers Retirement System | 77,297 | $2.16M | 0.00% | −12,105−13.5% | Reduced |
| Louisiana State Employees Retirement System | 75,600 | $2.12M | 0.04% | −300−0.4% | Reduced |
| Citigroup Inc | 73,374 | $2.05M | 0.00% | +7,473+11.3% | Added |
| Campbell & CO Investment Adviser LLC | 73,134 | $2.05M | 0.10% | +48,443+196.2% | Added |
| Mutual of America Capital Management LLC | 72,867 | $2.04M | 0.02% | +54,375+294.0% | Added |
| Natixis Advisors, L.P. | 72,638 | $2.03M | 0.00% | +5,179+7.7% | Added |
| Teachers Retirement System of the State of Kentucky | 65,763 | $1.84M | 0.01% | +19,019+40.7% | Added |
| Atom Investors LP | 65,706 | $1.84M | 0.15% | +65,706 | New |
| Ritholtz Wealth Management | 64,108 | $1.79M | 0.03% | +2,366+3.8% | Added |
| Entropy Technologies, LP | 63,724 | $1.78M | 0.10% | +40,433+173.6% | Added |
| ADAR1 Capital Management, LLC | 63,700 | $1.78M | 0.13% | +7,500+13.3% | Added |
| Gotham Asset Management, LLC | 62,469 | $1.75M | 0.01% | −517−0.8% | Reduced |
| Empowered Funds, LLC | 61,198 | $1.71M | 0.03% | +61,198 | New |
| Creative Planning | 60,780 | $1.70M | 0.00% | −1,215−2.0% | Reduced |
| Jane Street Group, LLC | 60,770 | $1.70M | 0.00% | −331,411−84.5% | Reduced |
| Globeflex Capital L P | 60,560 | $1.69M | 0.26% | −5,658−8.5% | Reduced |
| Federation des caisses Desjardins du Quebec | 60,006 | $1.68M | 0.01% | +60,006 | New |
| Oliver Luxxe Assets LLC | 56,031 | $1.57M | 0.24% | +10,147+22.1% | Added |
| Schroder Investment Management Group | 55,523 | $1.54M | 0.00% | −2,116−3.7% | Reduced |
| Handelsbanken Fonder AB | 55,000 | $1.54M | 0.00% | −277,100−83.4% | Reduced |
| Millennium Management LLC | 54,642 | $1.53M | 0.00% | −92,818−62.9% | Reduced |
| State of New Jersey Common Pension Fund D | 53,527 | $1.50M | 0.01% | −19,669−26.9% | Reduced |
| Yousif Capital Management, LLC | 46,011 | $1.46M | 0.02% | −6,652−12.6% | Reduced |
| Exchange Traded Concepts, LLC | 50,106 | $1.40M | 0.01% | +5,347+11.9% | Added |
| Birchview Capital, LP | 50,000 | $1.40M | 0.82% | 00.0% | Unchanged |
| Diversified Trust Co | 49,058 | $1.37M | 0.03% | +2,253+4.8% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 48,976 | $1.37M | 0.00% | +4,287+9.6% | Added |
| Royce & Associates LP | 48,010 | $1.34M | 0.01% | −1,759−3.5% | Reduced |
| Amalgamated Bank | 47,875 | $1.34M | 0.01% | +762+1.6% | Added |
| Engineers Gate Manager LP | 47,731 | $1.34M | 0.02% | −35,426−42.6% | Reduced |
| Virtus ETF Advisers LLC | 47,708 | $1.33M | 0.63% | 00.0% | Unchanged |
| TD Asset Management Inc | 46,184 | $1.29M | 0.00% | −78,486−63.0% | Reduced |
| STRS Ohio | 46,100 | $1.29M | 0.00% | 00.0% | Unchanged |
| Marex Group plc | 44,851 | $1.25M | 0.01% | +30,751+218.1% | Added |
| Nicollet Investment Management, Inc. | 44,479 | $1.25M | 0.39% | −500−1.1% | Reduced |
| LPL Financial LLC | 44,242 | $1.24M | 0.00% | +397+0.9% | Added |
| Police & Firemen's Retirement System of New Jersey | 44,145 | $1.24M | 0.01% | −1,157−2.6% | Reduced |
| Arizona State Retirement System | 43,625 | $1.22M | 0.01% | −2,715−5.9% | Reduced |
| HSBC Holdings PLC | 42,817 | $1.20M | 0.00% | +7,269+20.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 40,878 | $1.14M | 0.01% | −1,163−2.8% | Reduced |
| Envestnet Asset Management Inc | 40,332 | $1.13M | 0.00% | −2,529−5.9% | Reduced |
| Dana Investment Advisors, Inc. | 39,456 | $1.10M | 0.03% | +12,122+44.3% | Added |
| Vinva Investment Management Ltd | 26,520 | $1.10M | 0.01% | +17,261+186.4% | Added |
| Toroso Investments, LLC | 39,053 | $1.09M | 0.00% | +5,104+15.0% | Added |
| ProShare Advisors LLC | 38,874 | $1.09M | 0.00% | +2,377+6.5% | Added |
| Oregon Public Employees Retirement Fund | 37,782 | $1.06M | 0.01% | +622+1.7% | Added |
| Catalytic Wealth RIA, LLC | 37,418 | $1.05M | 0.04% | +19,377+107.4% | Added |
| Captrust Financial Advisors | 36,767 | $1.03M | 0.00% | +6,037+19.6% | Added |
| SG Americas Securities, LLC | 35,872 | $1.00M | 0.00% | +5,255+17.2% | Added |
| Hudson Portfolio Management LLC | 33,505 | $937.5K | 0.81% | −2,950−8.1% | Reduced |
| Jump Financial, LLC | 32,629 | $913.0K | 0.01% | +32,629 | New |
| Amundi | 32,383 | $906.1K | 0.00% | +2,973+10.1% | Added |
| Cerity Partners LLC | 32,330 | $904.6K | 0.00% | +16,562+105.0% | Added |
| Bridgeway Capital Management, LLC | 31,200 | $873.0K | 0.02% | +31,200 | New |
| DnB Asset Management AS | 30,762 | $860.7K | 0.00% | +17,532+132.5% | Added |
| AdvisorShares Investments LLC | 30,580 | $855.6K | 0.14% | +4,931+19.2% | Added |
| LSV Asset Management | 30,500 | $853.0K | 0.00% | +15,700+106.1% | Added |
| Summit Global Investments | 29,662 | $830.0K | 0.05% | +9,724+48.8% | Added |
| Aquatic Capital Management LLC | 28,411 | $794.9K | 0.02% | +28,411 | New |
| Mirabella Financial Services LLP | 27,462 | $768.4K | 0.07% | +27,462 | New |
| Dark Forest Capital Management LP | 27,203 | $761.1K | 0.03% | +27,203 | New |
| NLB Skladi, upravljanje premozenja, d.o.o. | 27,000 | $755.5K | 0.03% | +27,000 | New |
| China Universal Asset Management Co., Ltd. | 26,906 | $752.8K | 0.06% | −2,030−7.0% | Reduced |
| Oxford Asset Management LLP | 26,767 | $748.9K | 0.26% | +26,767 | New |
| Federated Hermes, Inc. | 26,546 | $742.8K | 0.00% | +23,045+658.2% | Added |
| HighVista Strategies LLC | 26,401 | $738.7K | 0.19% | −17,680−40.1% | Reduced |