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, Q3 2025
Institutional positions in Alkermes plc. as of Sep 30, 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
- 358
- +10 vs. Q2 2025
- Shares held
- 169.6M
- +2.28M (+1.4%) vs. Q2 2025
- Total value
- $5.09B
- +$301.2M (+6.3%) vs. Q2 2025
- New holders
- 46
- 147 more added
- Sold out
- 36
- 134 more reduced
5 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Alkermes plc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 27,972,078 | $839.2M | 0.01% | +115,915+0.4% | Added |
| Vanguard Group Inc | 18,179,511 | $545.4M | 0.01% | −323,563−1.7% | Reduced |
| Price T Rowe Associates Inc | 10,238,357 | $307.2M | 0.03% | +196,457+2.0% | Added |
| State Street Corp | 8,540,351 | $256.2M | 0.01% | +332,095+4.0% | Added |
| Baker Bros. Advisors LP | 8,091,351 | $242.7M | 1.75% | +1,680,748+26.2% | Added |
| Renaissance Technologies LLC | 6,292,528 | $188.8M | 0.25% | +482,368+8.3% | Added |
| American Century Companies Inc | 4,397,471 | $131.9M | 0.07% | +740,248+20.2% | Added |
| Geode Capital Management, LLC | 4,061,394 | $121.9M | 0.01% | +37,842+0.9% | Added |
| JPMorgan Chase & Co | 3,928,170 | $117.8M | 0.01% | −908,124−18.8% | Reduced |
| Dimensional Fund Advisors LP | 3,697,996 | $110.9M | 0.02% | +601,359+19.4% | Added |
| Commodore Capital LP | 3,096,754 | $92.9M | 4.54% | +646,754+26.4% | Added |
| Primecap Management Co | 2,759,080 | $82.8M | 0.06% | −143,430−4.9% | Reduced |
| Holocene Advisors, LP | 2,469,030 | $74.1M | 0.17% | −384,738−13.5% | Reduced |
| Avoro Capital Advisors LLC | 2,240,000 | $67.2M | 0.87% | −660,000−22.8% | Reduced |
| Nuveen, LLC | 2,173,476 | $65.2M | 0.02% | +125,403+6.1% | Added |
| Charles Schwab Investment Management Inc | 2,140,373 | $64.2M | 0.01% | +48,324+2.3% | Added |
| Artisan Partners Limited Partnership | 2,109,772 | $63.3M | 0.09% | +567,965+36.8% | Added |
| Loomis Sayles & Co L P | 2,048,851 | $61.5M | 0.07% | −61,043−2.9% | Reduced |
| Goldman Sachs Group Inc | 1,994,945 | $59.8M | 0.01% | +327,248+19.6% | Added |
| Northern Trust Corp | 1,766,180 | $53.0M | 0.01% | −47,429−2.6% | Reduced |
| Paradigm Biocapital Advisors LP | 1,719,334 | $51.6M | 1.53% | +343,765+25.0% | Added |
| RTW Investments, LP | 1,672,356 | $50.2M | 0.62% | −3,009,933−64.3% | Reduced |
| Morgan Stanley | 1,551,499 | $46.5M | 0.00% | −250,553−13.9% | Reduced |
| Bank of New York Mellon Corp | 1,424,466 | $42.7M | 0.01% | −111,420−7.3% | Reduced |
| First Trust Advisors LP | 1,398,021 | $41.9M | 0.03% | +740+0.1% | Added |
| FMR LLC | 1,295,493 | $38.9M | 0.00% | +17,487+1.4% | Added |
| Affinity Asset Advisors, LLC | 1,250,000 | $37.5M | 3.49% | +250,000+25.0% | Added |
| Arrowstreet Capital, Limited Partnership | 1,208,944 | $36.3M | 0.02% | +1,105,666+1,070.6% | Added |
| Bank of America Corp | 1,096,455 | $32.9M | 0.00% | −1,058,632−49.1% | Reduced |
| Virginia Retirement Systems Et Al | 901,333 | $27.0M | 0.18% | +901,333 | New |
| Principal Financial Group Inc | 900,330 | $27.0M | 0.01% | −14,465−1.6% | Reduced |
| Man Group plc | 897,274 | $26.9M | 0.05% | +621,452+225.3% | Added |
| Panagora Asset Management Inc | 887,197 | $26.6M | 0.11% | +10,023+1.1% | Added |
| Pictet Asset Management Holding SA | 893,046 | $26.6M | 0.03% | +623,876+231.8% | Added |
| Driehaus Capital Management LLC | 827,473 | $24.8M | 0.18% | +662+0.1% | Added |
| Pacer Advisors, Inc. | 808,132 | $24.2M | 0.06% | −98,825−10.9% | Reduced |
| BNP Paribas Arbitrage, SA | 761,203 | $22.8M | 0.02% | −374,275−33.0% | Reduced |
| UBS Group AG | 754,166 | $22.6M | 0.00% | −588,236−43.8% | Reduced |
| Public Sector Pension Investment Board | 710,700 | $21.3M | 0.08% | +73,787+11.6% | Added |
| MetLife Investment Management | 707,196 | $21.2M | 0.10% | +50,548+7.7% | Added |
| Citadel Advisors LLC | 704,834 | $21.1M | 0.02% | +667,411+1,783.4% | Added |
| Frazier Life Sciences Management, L.P. | 700,647 | $21.0M | 0.63% | −300,000−30.0% | Reduced |
| Sio Capital Management, LLC | 674,840 | $20.2M | 5.12% | +674,840 | New |
| Two Sigma Investments, LP | 656,499 | $19.7M | 0.03% | +330,596+101.4% | Added |
| Segall Bryant & Hamill, LLC | 596,479 | $17.9M | 0.24% | +2,541+0.4% | Added |
| Invesco Ltd. | 584,293 | $17.5M | 0.00% | −28,730−4.7% | Reduced |
| Acadian Asset Management LLC | 568,675 | $17.0M | 0.03% | −118,577−17.3% | Reduced |
| Woodline Partners LP | 558,567 | $16.8M | 0.08% | +1020.0% | Added |
| Ameriprise Financial Inc | 557,866 | $16.7M | 0.00% | −148,141−21.0% | Reduced |
| Barclays PLC | 556,651 | $16.7M | 0.01% | −137,471−19.8% | Reduced |
| MPM Oncology Impact Management LP | 549,262 | $16.5M | 2.70% | 00.0% | Unchanged |
| Voya Investment Management LLC | 533,650 | $16.0M | 0.02% | +30,065+6.0% | Added |
| D. E. Shaw & Co., Inc. | 528,749 | $15.9M | 0.01% | −291,347−35.5% | Reduced |
| Allianz Asset Management GmbH | 524,795 | $15.7M | 0.02% | +511,702+3,908.2% | Added |
| EcoR1 Capital, LLC | 500,000 | $15.0M | 0.72% | 00.0% | Unchanged |
| Legal & General Group Plc | 499,623 | $15.0M | 0.00% | −35,719−6.7% | Reduced |
| Rhumbline Advisers | 473,837 | $14.2M | 0.01% | +980+0.2% | Added |
| Glenmede Investment Management, LP | 455,641 | $13.7M | 0.07% | −27,722−5.7% | Reduced |
| Opaleye Management Inc. | 450,000 | $13.5M | 1.91% | +450,000 | New |
| Raymond James Financial Inc | 446,925 | $13.4M | 0.00% | −7,492−1.6% | Reduced |
| Squarepoint Ops LLC | 445,306 | $13.4M | 0.03% | +396,039+803.9% | Added |
| Mackenzie Financial Corp | 442,350 | $13.3M | 0.02% | +152,023+52.4% | Added |
| Royal Bank of Canada | 419,290 | $12.6M | 0.00% | +192,848+85.2% | Added |
| Canada Pension Plan Investment Board | 415,800 | $12.5M | 0.01% | +44,900+12.1% | Added |
| UBS Asset Management Americas Inc | 392,427 | $11.8M | 0.00% | −279,002−41.6% | Reduced |
| Jane Street Group, LLC | 392,181 | $11.8M | 0.01% | +35,084+9.8% | Added |
| Rice Hall James & Associates, LLC | 385,342 | $11.6M | 0.63% | −36,543−8.7% | Reduced |
| Wellington Management Group LLP | 375,190 | $11.3M | 0.00% | −1,324,913−77.9% | Reduced |
| Macquarie Group Ltd | 372,890 | $11.2M | 0.01% | −1,434−0.4% | Reduced |
| AQR Capital Management LLC | 372,422 | $11.2M | 0.01% | −80,100−17.7% | Reduced |
| Janus Henderson Group PLC | 344,490 | $10.3M | 0.00% | +139,895+68.4% | Added |
| Victory Capital Management Inc | 344,202 | $10.3M | 0.01% | +103,749+43.1% | Added |
| Handelsbanken Fonder AB | 332,100 | $9.96M | 0.03% | +13,700+4.3% | Added |
| Fisher Asset Management, LLC | 322,748 | $9.68M | 0.00% | +30,801+10.6% | Added |
| California Public Employees Retirement System | 320,879 | $9.63M | 0.01% | +12,337+4.0% | Added |
| Swiss National Bank | 303,600 | $9.11M | 0.01% | +4,300+1.4% | Added |
| HealthInvest Partners AB | 252,875 | $8.05M | 2.99% | +25,651+11.3% | Added |
| Voloridge Investment Management, LLC | 264,446 | $7.93M | 0.03% | +133,015+101.2% | Added |
| Edgestream Partners, L.P. | 259,411 | $7.78M | 0.23% | +185,513+251.0% | Added |
| Peregrine Capital Management LLC | 257,795 | $7.73M | 0.23% | −6,825−2.6% | Reduced |
| C WorldWide Group Holding A/S | 250,000 | $7.50M | 0.12% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 249,727 | $7.49M | 0.10% | +88,341+54.7% | Added |
| StemPoint Capital LP | 241,637 | $7.25M | 1.46% | −109,487−31.2% | Reduced |
| Alliancebernstein L.P. | 238,539 | $7.16M | 0.00% | +36,359+18.0% | Added |
| AXA Investment Managers S.A. | 236,897 | $7.11M | 0.02% | +236,897 | New |
| SEI Investments Co | 225,807 | $6.77M | 0.01% | +8,901+4.1% | Added |
| Prudential Financial Inc | 209,826 | $6.29M | 0.01% | +33,525+19.0% | Added |
| Krensavage Asset Management, LLC | 207,822 | $6.24M | 2.66% | 00.0% | Unchanged |
| Deutsche Bank AG | 206,422 | $6.19M | 0.00% | +14,974+7.8% | Added |
| Two Sigma Advisers, LP | 205,200 | $6.16M | 0.01% | +197,400+2,530.8% | Added |
| S&CO Inc | 201,210 | $6.04M | 0.37% | −19,375−8.8% | Reduced |
| New York State Common Retirement Fund | 195,999 | $5.88M | 0.01% | +54,915+38.9% | Added |
| Franklin Resources Inc | 184,346 | $5.53M | 0.00% | +90,335+96.1% | Added |
| Palo Alto Investors LP | 183,938 | $5.52M | 1.02% | −37,083−16.8% | Reduced |
| Silverarc Capital Management, LLC | 180,513 | $5.42M | 0.78% | +180,513 | New |
| Rafferty Asset Management, LLC | 179,902 | $5.40M | 0.02% | +18,617+11.5% | Added |
| Russell Investments Group, Ltd. | 179,465 | $5.28M | 0.01% | +38,742+27.5% | Added |
| Martingale Asset Management L P | 165,110 | $4.95M | 0.12% | +29,859+22.1% | Added |
| Neuberger Berman Group LLC | 152,721 | $4.58M | 0.00% | −43,610−22.2% | Reduced |
| California State Teachers Retirement System | 148,909 | $4.47M | 0.00% | +3,978+2.7% | Added |