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, Q1 2026
Institutional positions in Alkermes plc. as of Mar 31, 2026. 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
- 390
- +30 vs. Q4 2025
- Shares held
- 176.6M
- +16.2M (+10.1%) vs. Q4 2025
- Total value
- $6.22B
- +$1.73B (+38.5%) vs. Q4 2025
- New holders
- 76
- 121 more added
- Sold out
- 46
- 149 more reduced
6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Alkermes plc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vontobel Holding Ltd. | 32,101 | $1.14M | 0.00% | +6,054+23.2% | Added |
| Hudson Portfolio Management LLC | 32,235 | $1.14M | 0.96% | −1,270−3.8% | Reduced |
| ProShare Advisors LLC | 32,729 | $1.16M | 0.00% | −6,145−15.8% | Reduced |
| Oregon Public Employees Retirement Fund | 37,782 | $1.34M | 0.02% | 00.0% | Unchanged |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 37,964 | $1.34M | 0.00% | +17,596+86.4% | Added |
| Vanguard Investments Australia, Ltd. | 38,147 | $1.35M | 0.00% | +38,147 | New |
| CenterBook Partners LP | 38,625 | $1.37M | 0.07% | +38,625 | New |
| LPL Financial LLC | 39,447 | $1.39M | 0.00% | −4,795−10.8% | Reduced |
| Dana Investment Advisors, Inc. | 40,368 | $1.43M | 0.04% | +912+2.3% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 40,833 | $1.44M | 0.01% | −45−0.1% | Reduced |
| Toroso Investments, LLC | 41,342 | $1.46M | 0.00% | +2,289+5.9% | Added |
| Jump Financial, LLC | 41,446 | $1.47M | 0.02% | +8,817+27.0% | Added |
| Gotham Asset Management, LLC | 41,548 | $1.47M | 0.00% | −20,921−33.5% | Reduced |
| Envestnet Asset Management Inc | 42,416 | $1.50M | 0.00% | +2,084+5.2% | Added |
| Arizona State Retirement System | 43,086 | $1.52M | 0.01% | −539−1.2% | Reduced |
| Nicollet Investment Management, Inc. | 43,301 | $1.53M | 0.52% | −1,178−2.6% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 44,145 | $1.56M | 0.01% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 44,932 | $1.59M | 0.00% | +25,492+131.1% | Added |
| Yousif Capital Management, LLC | 45,655 | $1.61M | 0.02% | −356−0.8% | Reduced |
| Ritholtz Wealth Management | 45,844 | $1.62M | 0.03% | −18,264−28.5% | Reduced |
| ADAR1 Capital Management, LLC | 46,400 | $1.64M | 0.10% | −17,300−27.2% | Reduced |
| STRS Ohio | 46,900 | $1.66M | 0.01% | +800+1.7% | Added |
| Amalgamated Bank | 47,378 | $1.68M | 0.01% | −497−1.0% | Reduced |
| Citigroup Inc | 47,450 | $1.68M | 0.00% | −25,924−35.3% | Reduced |
| Virtus ETF Advisers LLC | 47,468 | $1.68M | 0.78% | −240−0.5% | Reduced |
| Canada Pension Plan Investment Board | 48,500 | $1.71M | 0.00% | −262,100−84.4% | Reduced |
| HSBC Holdings PLC | 48,337 | $1.73M | 0.00% | +5,520+12.9% | Added |
| Birchview Capital, LP | 50,000 | $1.77M | 1.01% | 00.0% | Unchanged |
| Great Point Partners LLC | 50,000 | $1.77M | 0.43% | +50,000 | New |
| Diadema Partners LP | 50,000 | $1.77M | 0.73% | +50,000 | New |
| Zacks Investment Management | 50,058 | $1.77M | 0.01% | −34,303−40.7% | Reduced |
| Lumbard & Kellner, LLC | 52,593 | $1.86M | 0.64% | +52,593 | New |
| Edgestream Partners, L.P. | 52,826 | $1.87M | 0.06% | −238,473−81.9% | Reduced |
| State of New Jersey Common Pension Fund D | 53,609 | $1.90M | 0.01% | +82+0.2% | Added |
| New York State Teachers Retirement System | 54,368 | $1.92M | 0.00% | −22,929−29.7% | Reduced |
| Diversified Trust Co | 54,913 | $1.94M | 0.04% | +5,855+11.9% | Added |
| Handelsbanken Fonder AB | 55,000 | $1.95M | 0.01% | 00.0% | Unchanged |
| Royce & Associates LP | 55,683 | $1.97M | 0.02% | +7,673+16.0% | Added |
| Susquehanna International Group, LLP | 56,795 | $2.01M | 0.00% | +41,922+281.9% | Added |
| Schroder Investment Management Group | 67,458 | $2.03M | 0.00% | +11,935+21.5% | Added |
| Intech Investment Management LLC | 60,967 | $2.16M | 0.02% | −98,614−61.8% | Reduced |
| Amundi | 64,710 | $2.29M | 0.00% | +32,327+99.8% | Added |
| Federation des caisses Desjardins du Quebec | 66,144 | $2.34M | 0.01% | +6,138+10.2% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 66,815 | $2.36M | 0.01% | +17,839+36.4% | Added |
| State of Tennessee, Treasury Department | 66,936 | $2.37M | 0.01% | +522+0.8% | Added |
| Manufacturers Life Insurance Company, The | 71,415 | $2.53M | 0.00% | −42,319−37.2% | Reduced |
| O'Shaughnessy Asset Management, LLC | 71,778 | $2.54M | 0.01% | −18,796−20.8% | Reduced |
| Mutual of America Capital Management LLC | 72,668 | $2.57M | 0.03% | −199−0.3% | Reduced |
| HighVista Strategies LLC | 73,189 | $2.59M | 0.71% | +46,788+177.2% | Added |
| Louisiana State Employees Retirement System | 73,200 | $2.59M | 0.05% | −2,400−3.2% | Reduced |
| Natixis Advisors, L.P. | 74,853 | $2.65M | 0.00% | +2,215+3.0% | Added |
| Creative Planning | 75,023 | $2.65M | 0.00% | +14,243+23.4% | Added |
| Colony Group, LLC | 77,052 | $2.72M | 0.00% | −46,989−37.9% | Reduced |
| Profund Advisors LLC | 77,769 | $2.75M | 0.10% | −2,855−3.5% | Reduced |
| Teachers Retirement System of the State of Kentucky | 77,928 | $2.76M | 0.02% | +12,165+18.5% | Added |
| Allianz Asset Management GmbH | 80,360 | $2.84M | 0.00% | −266,948−76.9% | Reduced |
| StemPoint Capital LP | 80,492 | $2.85M | 0.55% | +80,492 | New |
| Vanguard Global Advisers, LLC | 81,642 | $2.89M | 0.00% | +81,642 | New |
| HRT Financial LP | 81,989 | $2.90M | 0.01% | −118,235−59.1% | Reduced |
| Pathstone Holdings, LLC | 81,988 | $2.90M | 0.01% | +3,807+4.9% | Added |
| KLP Kapitalforvaltning AS | 82,100 | $2.90M | 0.01% | +1,000+1.2% | Added |
| Bridgewater Associates, LP | 83,806 | $2.96M | 0.01% | −260,646−75.7% | Reduced |
| Vident Advisory, LLC | 84,090 | $2.97M | 0.03% | +1,796+2.2% | Added |
| Exome Asset Management LLC | 84,103 | $2.97M | 1.75% | +84,103 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 87,617 | $3.04M | 0.00% | +358+0.4% | Added |
| MetLife Investment Management | 88,852 | $3.14M | 0.02% | −441,527−83.2% | Reduced |
| State of Alaska, Department of Revenue | 90,546 | $3.20M | 0.03% | −2,481−2.7% | Reduced |
| Illinois Municipal Retirement Fund | 90,989 | $3.22M | 0.04% | −490−0.5% | Reduced |
| Voya Investment Management LLC | 93,130 | $3.29M | 0.00% | −408,677−81.4% | Reduced |
| Russell Investments Group, Ltd. | 98,718 | $3.47M | 0.00% | −58,641−37.3% | Reduced |
| Krensavage Asset Management, LLC | 107,822 | $3.81M | 1.49% | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 110,212 | $3.90M | 0.01% | −6,361−5.5% | Reduced |
| Wells Fargo & Company | 117,926 | $4.17M | 0.00% | −115,061−49.4% | Reduced |
| Knott David M Jr | 120,000 | $4.24M | 2.53% | +25,000+26.3% | Added |
| Assenagon Asset Management S.A. | 122,127 | $4.32M | 0.01% | +11,845+10.7% | Added |
| State Board of Administration of Florida Retirement System | 129,436 | $4.58M | 0.01% | −2,260−1.7% | Reduced |
| Prudential Financial Inc | 131,870 | $4.66M | 0.01% | −62,635−32.2% | Reduced |
| Rhenman & Partners Asset Management AB | 133,250 | $4.71M | 0.58% | 00.0% | Unchanged |
| Alps Advisors Inc | 135,660 | $4.80M | 0.02% | +281+0.2% | Added |
| Vanguard Asset Management, Ltd | 136,410 | $4.82M | 0.00% | +136,410 | New |
| New York State Common Retirement Fund | 137,618 | $4.87M | 0.01% | −11,666−7.8% | Reduced |
| State of Wisconsin Investment Board | 139,333 | $4.93M | 0.01% | +46,100+49.4% | Added |
| DAFNA Capital Management LLC | 139,482 | $4.93M | 1.12% | +9,234+7.1% | Added |
| Deutsche Bank AG | 149,734 | $5.29M | 0.00% | +15,273+11.4% | Added |
| Wedge Capital Management L L P | 151,234 | $5.35M | 0.10% | −21,016−12.2% | Reduced |
| SEI Investments Co | 153,817 | $5.44M | 0.01% | −36,900−19.3% | Reduced |
| Janus Henderson Group PLC | 154,016 | $5.45M | 0.00% | +8,212+5.6% | Added |
| SummitTX Capital, L.P. | 156,259 | $5.53M | 0.18% | +156,259 | New |
| Bessemer Group Inc | 158,397 | $5.60M | 0.01% | +757+0.5% | Added |
| Moore Capital Management, LP | 158,499 | $5.60M | 0.20% | +158,499 | New |
| Polygon Management Ltd. | 159,791 | $5.65M | 1.11% | +18,619+13.2% | Added |
| Rafferty Asset Management, LLC | 162,424 | $5.74M | 0.02% | −40,840−20.1% | Reduced |
| Hudson Bay Capital Management LP | 173,626 | $6.14M | 0.04% | +173,626 | New |
| Barclays PLC | 174,983 | $6.19M | 0.00% | −390,050−69.0% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 178,455 | $6.31M | 0.01% | −16,075−8.3% | Reduced |
| SG Americas Securities, LLC | 178,993 | $6.33M | 0.01% | +143,121+399.0% | Added |
| Franklin Resources Inc | 182,535 | $6.45M | 0.00% | −10,272−5.3% | Reduced |
| California State Teachers Retirement System | 183,795 | $6.50M | 0.01% | +35,002+23.5% | Added |
| Rock Springs Capital Management LP | 183,986 | $6.51M | 0.38% | +44,758+32.1% | Added |
| Martingale Asset Management L P | 194,766 | $6.89M | 0.17% | +24,499+14.4% | Added |