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 8 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 28,272,412 | $791.1M | 0.01% | +300,334+1.1% | Added |
| Vanguard Group Inc | 18,007,364 | $503.8M | 0.01% | −172,147−0.9% | Reduced |
| Baker Bros. Advisors LP | 10,012,267 | $280.1M | 1.64% | +1,920,916+23.7% | Added |
| State Street Corp | 9,472,858 | $265.1M | 0.01% | +932,507+10.9% | Added |
| Price T Rowe Associates Inc | 8,998,963 | $251.8M | 0.03% | −1,239,394−12.1% | Reduced |
| Renaissance Technologies LLC | 6,668,028 | $186.6M | 0.29% | +375,500+6.0% | Added |
| American Century Companies Inc | 5,956,824 | $166.7M | 0.08% | +1,559,353+35.5% | Added |
| JPMorgan Chase & Co | 5,184,547 | $145.1M | 0.01% | +1,256,377+32.0% | Added |
| Dimensional Fund Advisors LP | 4,412,783 | $123.5M | 0.03% | +714,787+19.3% | Added |
| Geode Capital Management, LLC | 4,080,776 | $114.2M | 0.01% | +19,382+0.5% | Added |
| Commodore Capital LP | 3,550,000 | $99.3M | 6.61% | +453,246+14.6% | Added |
| Wellington Management Group LLP | 3,020,442 | $84.5M | 0.01% | +2,645,252+705.0% | Added |
| Primecap Management Co | 2,564,300 | $71.7M | 0.05% | −194,780−7.1% | Reduced |
| UBS Group AG | 2,544,895 | $71.2M | 0.01% | +1,790,729+237.4% | Added |
| Nuveen, LLC | 2,427,028 | $67.9M | 0.02% | +253,552+11.7% | Added |
| Goldman Sachs Group Inc | 2,267,588 | $63.4M | 0.01% | +272,643+13.7% | Added |
| Charles Schwab Investment Management Inc | 2,152,756 | $60.2M | 0.01% | +12,383+0.6% | Added |
| Deep Track Capital, LP | 2,000,000 | $56.0M | 1.28% | +2,000,000 | New |
| Norges Bank | 1,945,734 | $54.4M | 0.01% | +1,945,734 | New |
| Loomis Sayles & Co L P | 1,902,522 | $53.2M | 0.06% | −146,329−7.1% | Reduced |
| Morgan Stanley | 1,888,487 | $52.8M | 0.00% | +336,988+21.7% | Added |
| RTW Investments, LP | 1,672,356 | $46.8M | 0.47% | 00.0% | Unchanged |
| Northern Trust Corp | 1,653,475 | $46.3M | 0.01% | −112,705−6.4% | Reduced |
| Pictet Asset Management Holding SA | 1,477,214 | $41.3M | 0.04% | +584,168+65.4% | Added |
| First Trust Advisors LP | 1,454,002 | $40.7M | 0.03% | +55,981+4.0% | Added |
| Arrowstreet Capital, Limited Partnership | 1,450,841 | $40.6M | 0.02% | +241,897+20.0% | Added |
| Avoro Capital Advisors LLC | 1,400,000 | $39.2M | 0.39% | −840,000−37.5% | Reduced |
| FMR LLC | 1,355,253 | $37.9M | 0.00% | +59,760+4.6% | Added |
| Artisan Partners Limited Partnership | 1,349,122 | $37.7M | 0.06% | −760,650−36.1% | Reduced |
| Bank of America Corp | 1,333,105 | $37.3M | 0.00% | +236,650+21.6% | Added |
| Soleus Capital Management, L.P. | 1,322,364 | $37.0M | 1.57% | +1,322,364 | New |
| Two Sigma Investments, LP | 1,213,397 | $34.0M | 0.05% | +556,898+84.8% | Added |
| Citadel Advisors LLC | 1,198,268 | $33.5M | 0.02% | +493,434+70.0% | Added |
| Squarepoint Ops LLC | 1,095,846 | $30.7M | 0.06% | +650,540+146.1% | Added |
| Bank of New York Mellon Corp | 1,074,087 | $30.1M | 0.01% | −350,379−24.6% | Reduced |
| Affinity Asset Advisors, LLC | 1,000,000 | $28.0M | 2.01% | −250,000−20.0% | Reduced |
| Virginia Retirement Systems Et Al | 976,483 | $27.3M | 0.16% | +75,150+8.3% | Added |
| Principal Financial Group Inc | 947,623 | $26.5M | 0.01% | +47,293+5.3% | Added |
| Panagora Asset Management Inc | 928,964 | $26.0M | 0.09% | +41,767+4.7% | Added |
| D. E. Shaw & Co., Inc. | 911,272 | $25.5M | 0.02% | +382,523+72.3% | Added |
| Driehaus Capital Management LLC | 796,968 | $22.3M | 0.15% | −30,505−3.7% | Reduced |
| Frazier Life Sciences Management, L.P. | 700,647 | $19.6M | 0.53% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 679,633 | $19.0M | 0.04% | +679,633 | New |
| Pacer Advisors, Inc. | 674,874 | $18.9M | 0.05% | −133,258−16.5% | Reduced |
| Public Sector Pension Investment Board | 671,170 | $18.8M | 0.06% | −39,530−5.6% | Reduced |
| Segall Bryant & Hamill, LLC | 615,292 | $17.2M | 0.23% | +18,813+3.2% | Added |
| Barclays PLC | 565,033 | $15.8M | 0.01% | +8,382+1.5% | Added |
| Two Sigma Advisers, LP | 562,587 | $15.7M | 0.03% | +357,387+174.2% | Added |
| Woodline Partners LP | 558,567 | $15.6M | 0.06% | 00.0% | Unchanged |
| Invesco Ltd. | 538,716 | $15.1M | 0.00% | −45,577−7.8% | Reduced |
| Ameriprise Financial Inc | 531,362 | $14.9M | 0.00% | −26,504−4.8% | Reduced |
| MetLife Investment Management | 530,379 | $14.8M | 0.07% | −176,817−25.0% | Reduced |
| Acadian Asset Management LLC | 522,097 | $14.6M | 0.02% | −46,578−8.2% | Reduced |
| AQR Capital Management LLC | 514,324 | $14.4M | 0.01% | +141,902+38.1% | Added |
| Voya Investment Management LLC | 501,807 | $14.0M | 0.01% | −31,843−6.0% | Reduced |
| Opaleye Management Inc. | 490,000 | $13.7M | 1.81% | +40,000+8.9% | Added |
| Rhumbline Advisers | 439,195 | $12.3M | 0.01% | −34,642−7.3% | Reduced |
| BNP Paribas Arbitrage, SA | 430,330 | $12.0M | 0.01% | −330,873−43.5% | Reduced |
| Legal & General Group Plc | 429,497 | $12.0M | 0.00% | −70,126−14.0% | Reduced |
| Glenmede Trust Co NA | 412,920 | $11.6M | 0.05% | +412,920 | New |
| Victory Capital Management Inc | 402,578 | $11.3M | 0.01% | +58,376+17.0% | Added |
| UBS Asset Management Americas Inc | 394,853 | $11.0M | 0.00% | +2,426+0.6% | Added |
| Fisher Asset Management, LLC | 390,493 | $10.9M | 0.00% | +67,745+21.0% | Added |
| Rice Hall James & Associates, LLC | 379,458 | $10.6M | 0.58% | −5,884−1.5% | Reduced |
| Nomura Asset Management International Inc. | 361,387 | $10.1M | 0.02% | +361,387 | New |
| Allianz Asset Management GmbH | 347,308 | $9.72M | 0.01% | −177,487−33.8% | Reduced |
| Bridgewater Associates, LP | 344,452 | $9.64M | 0.04% | +344,452 | New |
| Raymond James Financial Inc | 328,205 | $9.14M | 0.00% | −118,720−26.6% | Reduced |
| Royal Bank of Canada | 325,496 | $9.11M | 0.00% | −93,794−22.4% | Reduced |
| California Public Employees Retirement System | 324,578 | $9.08M | 0.01% | +3,699+1.2% | Added |
| Man Group plc | 312,512 | $8.74M | 0.02% | −584,762−65.2% | Reduced |
| Canada Pension Plan Investment Board | 310,600 | $8.69M | 0.01% | −105,200−25.3% | Reduced |
| Swiss National Bank | 309,200 | $8.65M | 0.01% | +5,600+1.8% | Added |
| Edgestream Partners, L.P. | 291,299 | $8.15M | 0.23% | +31,888+12.3% | Added |
| Robeco Institutional Asset Management B.V. | 285,670 | $7.99M | 0.01% | +151,283+112.6% | Added |
| Qube Research & Technologies Ltd | 276,558 | $7.74M | 0.01% | +276,558 | New |
| Voloridge Investment Management, LLC | 273,158 | $7.64M | 0.03% | +8,712+3.3% | Added |
| Peregrine Capital Management LLC | 254,333 | $7.12M | 0.22% | −3,462−1.3% | Reduced |
| C WorldWide Group Holding A/S | 250,000 | $7.00M | 0.12% | 00.0% | Unchanged |
| Palo Alto Investors LP | 242,560 | $6.79M | 0.94% | +58,622+31.9% | Added |
| HealthInvest Partners AB | 242,473 | $6.78M | 2.16% | −10,402−4.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 241,133 | $6.75M | 0.01% | +239,356+13,469.7% | Added |
| Wells Fargo & Company | 232,987 | $6.52M | 0.00% | +100,368+75.7% | Added |
| TrimTabs Asset Management, LLC | 219,495 | $6.14M | 0.80% | +219,495 | New |
| Alliancebernstein L.P. | 215,854 | $6.04M | 0.00% | −22,685−9.5% | Reduced |
| Rafferty Asset Management, LLC | 203,264 | $5.69M | 0.02% | +23,362+13.0% | Added |
| S&CO Inc | 201,760 | $5.64M | 0.35% | +550+0.3% | Added |
| HRT Financial LP | 200,224 | $5.60M | 0.02% | +181,947+995.5% | Added |
| Prudential Financial Inc | 194,505 | $5.44M | 0.01% | −15,321−7.3% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 194,530 | $5.44M | 0.01% | +55,364+39.8% | Added |
| Franklin Resources Inc | 192,807 | $5.39M | 0.00% | +8,461+4.6% | Added |
| SEI Investments Co | 190,717 | $5.34M | 0.01% | −35,090−15.5% | Reduced |
| Wedge Capital Management L L P | 172,250 | $4.82M | 0.09% | +31,160+22.1% | Added |
| Martingale Asset Management L P | 170,267 | $4.76M | 0.12% | +5,157+3.1% | Added |
| Intech Investment Management LLC | 159,581 | $4.47M | 0.04% | +85,544+115.5% | Added |
| Bessemer Group Inc | 157,640 | $4.41M | 0.01% | +155,418+6,994.5% | Added |
| Russell Investments Group, Ltd. | 157,359 | $4.39M | 0.00% | −22,106−12.3% | Reduced |
| Neuberger Berman Group LLC | 152,772 | $4.27M | 0.00% | +510.0% | Added |
| Capital Fund Management S.A. | 150,775 | $4.22M | 0.04% | +29,816+24.6% | Added |
| New York State Common Retirement Fund | 149,284 | $4.18M | 0.01% | −46,715−23.8% | Reduced |