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 |
|---|---|---|---|---|---|
| TD Asset Management Inc | 46,184 | $1.29M | 0.00% | −78,486−63.0% | Reduced |
| Virtus ETF Advisers LLC | 47,708 | $1.33M | 0.63% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 47,731 | $1.34M | 0.02% | −35,426−42.6% | Reduced |
| Amalgamated Bank | 47,875 | $1.34M | 0.01% | +762+1.6% | Added |
| Royce & Associates LP | 48,010 | $1.34M | 0.01% | −1,759−3.5% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 48,976 | $1.37M | 0.00% | +4,287+9.6% | Added |
| Diversified Trust Co | 49,058 | $1.37M | 0.03% | +2,253+4.8% | Added |
| Birchview Capital, LP | 50,000 | $1.40M | 0.82% | 00.0% | Unchanged |
| Exchange Traded Concepts, LLC | 50,106 | $1.40M | 0.01% | +5,347+11.9% | Added |
| Yousif Capital Management, LLC | 46,011 | $1.46M | 0.02% | −6,652−12.6% | Reduced |
| State of New Jersey Common Pension Fund D | 53,527 | $1.50M | 0.01% | −19,669−26.9% | Reduced |
| Millennium Management LLC | 54,642 | $1.53M | 0.00% | −92,818−62.9% | Reduced |
| Handelsbanken Fonder AB | 55,000 | $1.54M | 0.00% | −277,100−83.4% | Reduced |
| Schroder Investment Management Group | 55,523 | $1.54M | 0.00% | −2,116−3.7% | Reduced |
| Oliver Luxxe Assets LLC | 56,031 | $1.57M | 0.24% | +10,147+22.1% | Added |
| Federation des caisses Desjardins du Quebec | 60,006 | $1.68M | 0.01% | +60,006 | New |
| Globeflex Capital L P | 60,560 | $1.69M | 0.26% | −5,658−8.5% | Reduced |
| Jane Street Group, LLC | 60,770 | $1.70M | 0.00% | −331,411−84.5% | Reduced |
| Creative Planning | 60,780 | $1.70M | 0.00% | −1,215−2.0% | Reduced |
| Empowered Funds, LLC | 61,198 | $1.71M | 0.03% | +61,198 | New |
| Gotham Asset Management, LLC | 62,469 | $1.75M | 0.01% | −517−0.8% | Reduced |
| ADAR1 Capital Management, LLC | 63,700 | $1.78M | 0.13% | +7,500+13.3% | Added |
| Entropy Technologies, LP | 63,724 | $1.78M | 0.10% | +40,433+173.6% | Added |
| Ritholtz Wealth Management | 64,108 | $1.79M | 0.03% | +2,366+3.8% | Added |
| Atom Investors LP | 65,706 | $1.84M | 0.15% | +65,706 | New |
| Teachers Retirement System of the State of Kentucky | 65,763 | $1.84M | 0.01% | +19,019+40.7% | Added |
| Natixis Advisors, L.P. | 72,638 | $2.03M | 0.00% | +5,179+7.7% | Added |
| Mutual of America Capital Management LLC | 72,867 | $2.04M | 0.02% | +54,375+294.0% | Added |
| Campbell & CO Investment Adviser LLC | 73,134 | $2.05M | 0.10% | +48,443+196.2% | Added |
| Citigroup Inc | 73,374 | $2.05M | 0.00% | +7,473+11.3% | Added |
| Louisiana State Employees Retirement System | 75,600 | $2.12M | 0.04% | −300−0.4% | Reduced |
| New York State Teachers Retirement System | 77,297 | $2.16M | 0.00% | −12,105−13.5% | Reduced |
| Pathstone Holdings, LLC | 78,181 | $2.19M | 0.01% | −3,520−4.3% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 79,336 | $2.22M | 0.05% | +26,269+49.5% | Added |
| State of Tennessee, Treasury Department | 66,414 | $2.25M | 0.01% | −7,401−10.0% | Reduced |
| Profund Advisors LLC | 80,624 | $2.26M | 0.07% | +36,067+80.9% | Added |
| KLP Kapitalforvaltning AS | 81,100 | $2.27M | 0.01% | +700+0.9% | Added |
| Eagle Health Investments LP | 81,800 | $2.29M | 0.50% | 00.0% | Unchanged |
| Vident Advisory, LLC | 82,294 | $2.30M | 0.02% | +864+1.1% | Added |
| Tudor Investment Corp Et Al | 82,720 | $2.31M | 0.01% | +26,337+46.7% | Added |
| Zacks Investment Management | 84,361 | $2.36M | 0.02% | +84,361 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 87,259 | $2.44M | 0.00% | +2,682+3.2% | Added |
| O'Shaughnessy Asset Management, LLC | 90,574 | $2.53M | 0.01% | −358−0.4% | Reduced |
| Illinois Municipal Retirement Fund | 91,479 | $2.56M | 0.03% | −137−0.1% | Reduced |
| State of Alaska, Department of Revenue | 93,027 | $2.60M | 0.03% | +1,310+1.4% | Added |
| State of Wisconsin Investment Board | 93,233 | $2.61M | 0.01% | −6,703−6.7% | Reduced |
| Mackenzie Financial Corp | 95,447 | $2.65M | 0.00% | −346,903−78.4% | Reduced |
| Knott David M Jr | 95,000 | $2.66M | 1.23% | +75,700+392.2% | Added |
| Los Angeles Capital Management LLC | 86,368 | $2.66M | 0.01% | +833+1.0% | Added |
| Sio Capital Management, LLC | 95,353 | $2.67M | 0.44% | −579,487−85.9% | Reduced |
| Hussman Strategic Advisors, Inc. | 105,000 | $2.94M | 0.71% | −21,000−16.7% | Reduced |
| Krensavage Asset Management, LLC | 107,822 | $3.02M | 1.07% | −100,000−48.1% | Reduced |
| Assenagon Asset Management S.A. | 110,282 | $3.09M | 0.00% | +3,721+3.5% | Added |
| Manufacturers Life Insurance Company, The | 113,734 | $3.18M | 0.00% | −31,459−21.7% | Reduced |
| Thrivent Financial for Lutherans | 116,573 | $3.26M | 0.01% | −5,636−4.6% | Reduced |
| Colony Group, LLC | 124,041 | $3.47M | 0.00% | +124,041 | New |
| Marshall Wace, LLP | 129,899 | $3.63M | 0.00% | +129,899 | New |
| DAFNA Capital Management LLC | 130,248 | $3.64M | 0.85% | −4,500−3.3% | Reduced |
| State Board of Administration of Florida Retirement System | 131,696 | $3.68M | 0.01% | 00.0% | Unchanged |
| Rhenman & Partners Asset Management AB | 133,250 | $3.73M | 0.35% | +39,250+41.8% | Added |
| Deutsche Bank AG | 134,461 | $3.76M | 0.00% | −71,961−34.9% | Reduced |
| Alps Advisors Inc | 135,379 | $3.79M | 0.02% | +57,547+73.9% | Added |
| Rock Springs Capital Management LP | 139,228 | $3.90M | 0.20% | +32,691+30.7% | Added |
| Polygon Management Ltd. | 141,172 | $3.95M | 0.83% | +51,560+57.5% | Added |
| Janus Henderson Group PLC | 145,804 | $4.08M | 0.00% | −198,686−57.7% | Reduced |
| California State Teachers Retirement System | 148,793 | $4.16M | 0.00% | −116−0.1% | Reduced |
| New York State Common Retirement Fund | 149,284 | $4.18M | 0.01% | −46,715−23.8% | Reduced |
| Capital Fund Management S.A. | 150,775 | $4.22M | 0.04% | +29,816+24.6% | Added |
| Neuberger Berman Group LLC | 152,772 | $4.27M | 0.00% | +510.0% | Added |
| Russell Investments Group, Ltd. | 157,359 | $4.39M | 0.00% | −22,106−12.3% | Reduced |
| Bessemer Group Inc | 157,640 | $4.41M | 0.01% | +155,418+6,994.5% | Added |
| Intech Investment Management LLC | 159,581 | $4.47M | 0.04% | +85,544+115.5% | Added |
| Martingale Asset Management L P | 170,267 | $4.76M | 0.12% | +5,157+3.1% | Added |
| Wedge Capital Management L L P | 172,250 | $4.82M | 0.09% | +31,160+22.1% | Added |
| SEI Investments Co | 190,717 | $5.34M | 0.01% | −35,090−15.5% | Reduced |
| Franklin Resources Inc | 192,807 | $5.39M | 0.00% | +8,461+4.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 194,530 | $5.44M | 0.01% | +55,364+39.8% | Added |
| Prudential Financial Inc | 194,505 | $5.44M | 0.01% | −15,321−7.3% | Reduced |
| HRT Financial LP | 200,224 | $5.60M | 0.02% | +181,947+995.5% | Added |
| S&CO Inc | 201,760 | $5.64M | 0.35% | +550+0.3% | Added |
| Rafferty Asset Management, LLC | 203,264 | $5.69M | 0.02% | +23,362+13.0% | Added |
| Alliancebernstein L.P. | 215,854 | $6.04M | 0.00% | −22,685−9.5% | Reduced |
| TrimTabs Asset Management, LLC | 219,495 | $6.14M | 0.80% | +219,495 | New |
| Wells Fargo & Company | 232,987 | $6.52M | 0.00% | +100,368+75.7% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 241,133 | $6.75M | 0.01% | +239,356+13,469.7% | Added |
| HealthInvest Partners AB | 242,473 | $6.78M | 2.16% | −10,402−4.1% | Reduced |
| Palo Alto Investors LP | 242,560 | $6.79M | 0.94% | +58,622+31.9% | Added |
| C WorldWide Group Holding A/S | 250,000 | $7.00M | 0.12% | 00.0% | Unchanged |
| Peregrine Capital Management LLC | 254,333 | $7.12M | 0.22% | −3,462−1.3% | Reduced |
| Voloridge Investment Management, LLC | 273,158 | $7.64M | 0.03% | +8,712+3.3% | Added |
| Qube Research & Technologies Ltd | 276,558 | $7.74M | 0.01% | +276,558 | New |
| Robeco Institutional Asset Management B.V. | 285,670 | $7.99M | 0.01% | +151,283+112.6% | Added |
| Edgestream Partners, L.P. | 291,299 | $8.15M | 0.23% | +31,888+12.3% | Added |
| Swiss National Bank | 309,200 | $8.65M | 0.01% | +5,600+1.8% | Added |
| Canada Pension Plan Investment Board | 310,600 | $8.69M | 0.01% | −105,200−25.3% | Reduced |
| Man Group plc | 312,512 | $8.74M | 0.02% | −584,762−65.2% | Reduced |
| California Public Employees Retirement System | 324,578 | $9.08M | 0.01% | +3,699+1.2% | Added |
| Royal Bank of Canada | 325,496 | $9.11M | 0.00% | −93,794−22.4% | Reduced |
| Raymond James Financial Inc | 328,205 | $9.14M | 0.00% | −118,720−26.6% | Reduced |
| Bridgewater Associates, LP | 344,452 | $9.64M | 0.04% | +344,452 | New |