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 |
|---|---|---|---|---|---|
| Allianz Asset Management GmbH | 347,308 | $9.72M | 0.01% | −177,487−33.8% | Reduced |
| Nomura Asset Management International Inc. | 361,387 | $10.1M | 0.02% | +361,387 | New |
| Rice Hall James & Associates, LLC | 379,458 | $10.6M | 0.58% | −5,884−1.5% | Reduced |
| Fisher Asset Management, LLC | 390,493 | $10.9M | 0.00% | +67,745+21.0% | Added |
| UBS Asset Management Americas Inc | 394,853 | $11.0M | 0.00% | +2,426+0.6% | Added |
| Victory Capital Management Inc | 402,578 | $11.3M | 0.01% | +58,376+17.0% | Added |
| Glenmede Trust Co NA | 412,920 | $11.6M | 0.05% | +412,920 | New |
| Legal & General Group Plc | 429,497 | $12.0M | 0.00% | −70,126−14.0% | Reduced |
| BNP Paribas Arbitrage, SA | 430,330 | $12.0M | 0.01% | −330,873−43.5% | Reduced |
| Rhumbline Advisers | 439,195 | $12.3M | 0.01% | −34,642−7.3% | Reduced |
| Opaleye Management Inc. | 490,000 | $13.7M | 1.81% | +40,000+8.9% | Added |
| Voya Investment Management LLC | 501,807 | $14.0M | 0.01% | −31,843−6.0% | Reduced |
| AQR Capital Management LLC | 514,324 | $14.4M | 0.01% | +141,902+38.1% | Added |
| Acadian Asset Management LLC | 522,097 | $14.6M | 0.02% | −46,578−8.2% | Reduced |
| MetLife Investment Management | 530,379 | $14.8M | 0.07% | −176,817−25.0% | Reduced |
| Ameriprise Financial Inc | 531,362 | $14.9M | 0.00% | −26,504−4.8% | Reduced |
| Invesco Ltd. | 538,716 | $15.1M | 0.00% | −45,577−7.8% | Reduced |
| Woodline Partners LP | 558,567 | $15.6M | 0.06% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 562,587 | $15.7M | 0.03% | +357,387+174.2% | Added |
| Barclays PLC | 565,033 | $15.8M | 0.01% | +8,382+1.5% | Added |
| Segall Bryant & Hamill, LLC | 615,292 | $17.2M | 0.23% | +18,813+3.2% | Added |
| Public Sector Pension Investment Board | 671,170 | $18.8M | 0.06% | −39,530−5.6% | Reduced |
| Pacer Advisors, Inc. | 674,874 | $18.9M | 0.05% | −133,258−16.5% | Reduced |
| Balyasny Asset Management LLC | 679,633 | $19.0M | 0.04% | +679,633 | New |
| Frazier Life Sciences Management, L.P. | 700,647 | $19.6M | 0.53% | 00.0% | Unchanged |
| Driehaus Capital Management LLC | 796,968 | $22.3M | 0.15% | −30,505−3.7% | Reduced |
| D. E. Shaw & Co., Inc. | 911,272 | $25.5M | 0.02% | +382,523+72.3% | Added |
| Panagora Asset Management Inc | 928,964 | $26.0M | 0.09% | +41,767+4.7% | Added |
| Principal Financial Group Inc | 947,623 | $26.5M | 0.01% | +47,293+5.3% | Added |
| Virginia Retirement Systems Et Al | 976,483 | $27.3M | 0.16% | +75,150+8.3% | Added |
| Affinity Asset Advisors, LLC | 1,000,000 | $28.0M | 2.01% | −250,000−20.0% | Reduced |
| Bank of New York Mellon Corp | 1,074,087 | $30.1M | 0.01% | −350,379−24.6% | Reduced |
| Squarepoint Ops LLC | 1,095,846 | $30.7M | 0.06% | +650,540+146.1% | Added |
| Citadel Advisors LLC | 1,198,268 | $33.5M | 0.02% | +493,434+70.0% | Added |
| Two Sigma Investments, LP | 1,213,397 | $34.0M | 0.05% | +556,898+84.8% | Added |
| Soleus Capital Management, L.P. | 1,322,364 | $37.0M | 1.57% | +1,322,364 | New |
| Bank of America Corp | 1,333,105 | $37.3M | 0.00% | +236,650+21.6% | Added |
| Artisan Partners Limited Partnership | 1,349,122 | $37.7M | 0.06% | −760,650−36.1% | Reduced |
| FMR LLC | 1,355,253 | $37.9M | 0.00% | +59,760+4.6% | Added |
| Avoro Capital Advisors LLC | 1,400,000 | $39.2M | 0.39% | −840,000−37.5% | Reduced |
| Arrowstreet Capital, Limited Partnership | 1,450,841 | $40.6M | 0.02% | +241,897+20.0% | Added |
| First Trust Advisors LP | 1,454,002 | $40.7M | 0.03% | +55,981+4.0% | Added |
| Pictet Asset Management Holding SA | 1,477,214 | $41.3M | 0.04% | +584,168+65.4% | Added |
| Northern Trust Corp | 1,653,475 | $46.3M | 0.01% | −112,705−6.4% | Reduced |
| RTW Investments, LP | 1,672,356 | $46.8M | 0.47% | 00.0% | Unchanged |
| Morgan Stanley | 1,888,487 | $52.8M | 0.00% | +336,988+21.7% | Added |
| Loomis Sayles & Co L P | 1,902,522 | $53.2M | 0.06% | −146,329−7.1% | Reduced |
| Norges Bank | 1,945,734 | $54.4M | 0.01% | +1,945,734 | New |
| Deep Track Capital, LP | 2,000,000 | $56.0M | 1.28% | +2,000,000 | New |
| Charles Schwab Investment Management Inc | 2,152,756 | $60.2M | 0.01% | +12,383+0.6% | Added |
| Goldman Sachs Group Inc | 2,267,588 | $63.4M | 0.01% | +272,643+13.7% | Added |
| Nuveen, LLC | 2,427,028 | $67.9M | 0.02% | +253,552+11.7% | Added |
| UBS Group AG | 2,544,895 | $71.2M | 0.01% | +1,790,729+237.4% | Added |
| Primecap Management Co | 2,564,300 | $71.7M | 0.05% | −194,780−7.1% | Reduced |
| Wellington Management Group LLP | 3,020,442 | $84.5M | 0.01% | +2,645,252+705.0% | Added |
| Commodore Capital LP | 3,550,000 | $99.3M | 6.61% | +453,246+14.6% | Added |
| Geode Capital Management, LLC | 4,080,776 | $114.2M | 0.01% | +19,382+0.5% | Added |
| Dimensional Fund Advisors LP | 4,412,783 | $123.5M | 0.03% | +714,787+19.3% | Added |
| JPMorgan Chase & Co | 5,184,547 | $145.1M | 0.01% | +1,256,377+32.0% | Added |
| American Century Companies Inc | 5,956,824 | $166.7M | 0.08% | +1,559,353+35.5% | Added |
| Renaissance Technologies LLC | 6,668,028 | $186.6M | 0.29% | +375,500+6.0% | Added |
| Price T Rowe Associates Inc | 8,998,963 | $251.8M | 0.03% | −1,239,394−12.1% | Reduced |
| State Street Corp | 9,472,858 | $265.1M | 0.01% | +932,507+10.9% | Added |
| Baker Bros. Advisors LP | 10,012,267 | $280.1M | 1.64% | +1,920,916+23.7% | Added |
| Vanguard Group Inc | 18,007,364 | $503.8M | 0.01% | −172,147−0.9% | Reduced |
| BlackRock, Inc. | 28,272,412 | $791.1M | 0.01% | +300,334+1.1% | Added |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −2,469,030−100.0% | Sold out |
| Paradigm Biocapital Advisors LP | 0 | $0 | 0.00% | −1,719,334−100.0% | Sold out |
| MPM Oncology Impact Management LP | 0 | $0 | 0.00% | −549,262−100.0% | Sold out |
| EcoR1 Capital, LLC | 0 | $0 | 0.00% | −500,000−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −372,890−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −249,727−100.0% | Sold out |
| StemPoint Capital LP | 0 | $0 | 0.00% | −241,637−100.0% | Sold out |
| Silverarc Capital Management, LLC | 0 | $0 | 0.00% | −180,513−100.0% | Sold out |
| Standard Life Aberdeen plc | 0 | $0 | 0.00% | −146,224−100.0% | Sold out |
| Van Eck Associates Corp | 0 | $0 | 0.00% | −119,502−100.0% | Sold out |
| Diadema Partners LP | 0 | $0 | 0.00% | −72,079−100.0% | Sold out |
| AMG National Trust Bank | 0 | $0 | 0.00% | −60,175−100.0% | Sold out |
| Moody Aldrich Partners LLC | 0 | $0 | 0.00% | −55,615−100.0% | Sold out |
| Neo Ivy Capital Management | 0 | $0 | 0.00% | −29,756−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −27,928−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −26,817−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −25,723−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −24,198−100.0% | Sold out |
| Jennison Associates LLC | 0 | $0 | 0.00% | −19,570−100.0% | Sold out |
| Resona Asset Management Co.,Ltd. | 0 | $0 | 0.00% | −18,906−100.0% | Sold out |
| Persistent Asset Partners Ltd | 0 | $0 | 0.00% | −16,541−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −14,667−100.0% | Sold out |
| Advantage Alpha Capital Partners LP | 0 | $0 | 0.00% | −14,122−100.0% | Sold out |
| Vise Technologies, Inc. | 0 | $0 | 0.00% | −10,809−100.0% | Sold out |
| DRW Securities, LLC | 0 | $0 | 0.00% | −10,483−100.0% | Sold out |
| Ieq Capital, LLC | 0 | $0 | 0.00% | −10,134−100.0% | Sold out |
| CIBC Asset Management Inc | 0 | $0 | 0.00% | −9,047−100.0% | Sold out |
| Brinker Capital Investments, LLC | 0 | $0 | 0.00% | −8,762−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −8,074−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −7,480−100.0% | Sold out |
| Moors & Cabot, Inc. | 0 | $0 | 0.00% | −6,777−100.0% | Sold out |
| GW Henssler & Associates Ltd | 0 | $0 | 0.00% | −6,680−100.0% | Sold out |
| Johnson Financial Group, Inc. | 0 | $0 | 0.00% | −1,026−100.0% | Sold out |
| Storebrand Asset Management AS | 0 | $0 | 0.00% | −919−100.0% | Sold out |