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, 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 |
|---|---|---|---|---|---|
| Arizona State Retirement System | 46,340 | $1.39M | 0.01% | +639+1.4% | Added |
| Teachers Retirement System of the State of Kentucky | 46,744 | $1.40M | 0.01% | −5,022−9.7% | Reduced |
| Diversified Trust Co | 46,805 | $1.40M | 0.03% | +2,573+5.8% | Added |
| Amalgamated Bank | 47,113 | $1.41M | 0.01% | +265+0.6% | Added |
| Virtus ETF Advisers LLC | 47,708 | $1.43M | 0.79% | 00.0% | Unchanged |
| Royce & Associates LP | 49,769 | $1.49M | 0.01% | +37+0.1% | Added |
| Birchview Capital, LP | 50,000 | $1.50M | 1.13% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 52,663 | $1.58M | 0.02% | −10,288−16.3% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 53,067 | $1.59M | 0.04% | −85,366−61.7% | Reduced |
| Moody Aldrich Partners LLC | 55,615 | $1.67M | 0.32% | −11,304−16.9% | Reduced |
| Schroder Investment Management Group | 57,639 | $1.67M | 0.00% | +9,133+18.8% | Added |
| ADAR1 Capital Management, LLC | 56,200 | $1.69M | 0.17% | +11,200+24.9% | Added |
| Tudor Investment Corp Et Al | 56,383 | $1.69M | 0.01% | +56,383 | New |
| AMG National Trust Bank | 60,175 | $1.81M | 0.04% | +388+0.6% | Added |
| Ritholtz Wealth Management | 61,742 | $1.85M | 0.04% | −6,892−10.0% | Reduced |
| Creative Planning | 61,995 | $1.86M | 0.00% | −16,428−20.9% | Reduced |
| Gotham Asset Management, LLC | 62,986 | $1.89M | 0.01% | −70,486−52.8% | Reduced |
| Citigroup Inc | 65,901 | $1.98M | 0.00% | −121,945−64.9% | Reduced |
| Globeflex Capital L P | 66,218 | $1.99M | 0.31% | +50,425+319.3% | Added |
| Natixis Advisors, L.P. | 67,459 | $2.02M | 0.00% | +6,561+10.8% | Added |
| Diadema Partners LP | 72,079 | $2.16M | 1.51% | +72,079 | New |
| State of New Jersey Common Pension Fund D | 73,196 | $2.20M | 0.01% | +10,519+16.8% | Added |
| State of Tennessee, Treasury Department | 73,815 | $2.21M | 0.01% | +1,540+2.1% | Added |
| Intech Investment Management LLC | 74,037 | $2.22M | 0.02% | −10,672−12.6% | Reduced |
| Louisiana State Employees Retirement System | 75,900 | $2.28M | 0.04% | −1,100−1.4% | Reduced |
| Alps Advisors Inc | 77,832 | $2.33M | 0.01% | −11,077−12.5% | Reduced |
| KLP Kapitalforvaltning AS | 80,400 | $2.41M | 0.01% | +6,200+8.4% | Added |
| Vident Advisory, LLC | 81,430 | $2.44M | 0.02% | +21,854+36.7% | Added |
| Pathstone Holdings, LLC | 81,701 | $2.45M | 0.01% | −8,729−9.7% | Reduced |
| Eagle Health Investments LP | 81,800 | $2.45M | 0.64% | +81,800 | New |
| Engineers Gate Manager LP | 83,157 | $2.49M | 0.03% | +35,563+74.7% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 84,577 | $2.53M | 0.00% | −12,236−12.6% | Reduced |
| Los Angeles Capital Management LLC | 85,535 | $2.57M | 0.01% | +32,335+60.8% | Added |
| New York State Teachers Retirement System | 89,402 | $2.68M | 0.01% | −912−1.0% | Reduced |
| Polygon Management Ltd. | 89,612 | $2.69M | 0.39% | +73,980+473.3% | Added |
| O'Shaughnessy Asset Management, LLC | 90,932 | $2.73M | 0.02% | −17,803−16.4% | Reduced |
| Illinois Municipal Retirement Fund | 91,616 | $2.75M | 0.04% | +6,674+7.9% | Added |
| State of Alaska, Department of Revenue | 91,717 | $2.75M | 0.03% | −6,456−6.6% | Reduced |
| Rhenman & Partners Asset Management AB | 94,000 | $2.82M | 0.31% | +55,000+141.0% | Added |
| State of Wisconsin Investment Board | 99,936 | $3.00M | 0.01% | +380+0.4% | Added |
| Rock Springs Capital Management LP | 106,537 | $3.20M | 0.19% | +106,537 | New |
| Assenagon Asset Management S.A. | 106,561 | $3.20M | 0.00% | +22,544+26.8% | Added |
| Susquehanna International Group, LLP | 114,811 | $3.44M | 0.01% | −89,578−43.8% | Reduced |
| Van Eck Associates Corp | 119,502 | $3.58M | 0.00% | +1,690+1.4% | Added |
| Capital Fund Management S.A. | 120,959 | $3.63M | 0.04% | +81,030+202.9% | Added |
| Thrivent Financial for Lutherans | 122,209 | $3.67M | 0.01% | +955+0.8% | Added |
| TD Asset Management Inc | 124,670 | $3.74M | 0.00% | −91,772−42.4% | Reduced |
| Hussman Strategic Advisors, Inc. | 126,000 | $3.78M | 0.82% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 131,696 | $3.95M | 0.01% | +34,346+35.3% | Added |
| Wells Fargo & Company | 132,619 | $3.98M | 0.00% | +10,361+8.5% | Added |
| Robeco Institutional Asset Management B.V. | 134,387 | $4.03M | 0.01% | +21,067+18.6% | Added |
| DAFNA Capital Management LLC | 134,748 | $4.04M | 1.00% | +31,000+29.9% | Added |
| Algert Global LLC | 135,970 | $4.08M | 0.07% | +20,700+18.0% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 139,166 | $4.17M | 0.01% | +15,501+12.5% | Added |
| Wedge Capital Management L L P | 141,090 | $4.23M | 0.07% | +12,628+9.8% | Added |
| Manufacturers Life Insurance Company, The | 145,193 | $4.36M | 0.00% | −62,895−30.2% | Reduced |
| Standard Life Aberdeen plc | 146,224 | $4.39M | 0.01% | −32,495−18.2% | Reduced |
| Millennium Management LLC | 147,460 | $4.42M | 0.00% | +69,521+89.2% | Added |
| California State Teachers Retirement System | 148,909 | $4.47M | 0.00% | +3,978+2.7% | Added |
| Neuberger Berman Group LLC | 152,721 | $4.58M | 0.00% | −43,610−22.2% | Reduced |
| Martingale Asset Management L P | 165,110 | $4.95M | 0.12% | +29,859+22.1% | Added |
| Russell Investments Group, Ltd. | 179,465 | $5.28M | 0.01% | +38,742+27.5% | Added |
| Rafferty Asset Management, LLC | 179,902 | $5.40M | 0.02% | +18,617+11.5% | Added |
| Silverarc Capital Management, LLC | 180,513 | $5.42M | 0.78% | +180,513 | New |
| Palo Alto Investors LP | 183,938 | $5.52M | 1.02% | −37,083−16.8% | Reduced |
| Franklin Resources Inc | 184,346 | $5.53M | 0.00% | +90,335+96.1% | Added |
| New York State Common Retirement Fund | 195,999 | $5.88M | 0.01% | +54,915+38.9% | Added |
| S&CO Inc | 201,210 | $6.04M | 0.37% | −19,375−8.8% | Reduced |
| Two Sigma Advisers, LP | 205,200 | $6.16M | 0.01% | +197,400+2,530.8% | Added |
| Deutsche Bank AG | 206,422 | $6.19M | 0.00% | +14,974+7.8% | Added |
| Krensavage Asset Management, LLC | 207,822 | $6.24M | 2.66% | 00.0% | Unchanged |
| Prudential Financial Inc | 209,826 | $6.29M | 0.01% | +33,525+19.0% | Added |
| SEI Investments Co | 225,807 | $6.77M | 0.01% | +8,901+4.1% | Added |
| AXA Investment Managers S.A. | 236,897 | $7.11M | 0.02% | +236,897 | New |
| Alliancebernstein L.P. | 238,539 | $7.16M | 0.00% | +36,359+18.0% | Added |
| StemPoint Capital LP | 241,637 | $7.25M | 1.46% | −109,487−31.2% | Reduced |
| ExodusPoint Capital Management, LP | 249,727 | $7.49M | 0.10% | +88,341+54.7% | Added |
| C WorldWide Group Holding A/S | 250,000 | $7.50M | 0.12% | 00.0% | Unchanged |
| Peregrine Capital Management LLC | 257,795 | $7.73M | 0.23% | −6,825−2.6% | Reduced |
| Edgestream Partners, L.P. | 259,411 | $7.78M | 0.23% | +185,513+251.0% | Added |
| Voloridge Investment Management, LLC | 264,446 | $7.93M | 0.03% | +133,015+101.2% | Added |
| HealthInvest Partners AB | 252,875 | $8.05M | 2.99% | +25,651+11.3% | Added |
| Swiss National Bank | 303,600 | $9.11M | 0.01% | +4,300+1.4% | Added |
| California Public Employees Retirement System | 320,879 | $9.63M | 0.01% | +12,337+4.0% | Added |
| Fisher Asset Management, LLC | 322,748 | $9.68M | 0.00% | +30,801+10.6% | Added |
| Handelsbanken Fonder AB | 332,100 | $9.96M | 0.03% | +13,700+4.3% | Added |
| Victory Capital Management Inc | 344,202 | $10.3M | 0.01% | +103,749+43.1% | Added |
| Janus Henderson Group PLC | 344,490 | $10.3M | 0.00% | +139,895+68.4% | Added |
| AQR Capital Management LLC | 372,422 | $11.2M | 0.01% | −80,100−17.7% | Reduced |
| Macquarie Group Ltd | 372,890 | $11.2M | 0.01% | −1,434−0.4% | Reduced |
| Wellington Management Group LLP | 375,190 | $11.3M | 0.00% | −1,324,913−77.9% | Reduced |
| Rice Hall James & Associates, LLC | 385,342 | $11.6M | 0.63% | −36,543−8.7% | Reduced |
| Jane Street Group, LLC | 392,181 | $11.8M | 0.01% | +35,084+9.8% | Added |
| UBS Asset Management Americas Inc | 392,427 | $11.8M | 0.00% | −279,002−41.6% | Reduced |
| Canada Pension Plan Investment Board | 415,800 | $12.5M | 0.01% | +44,900+12.1% | Added |
| Royal Bank of Canada | 419,290 | $12.6M | 0.00% | +192,848+85.2% | Added |
| Mackenzie Financial Corp | 442,350 | $13.3M | 0.02% | +152,023+52.4% | Added |
| Squarepoint Ops LLC | 445,306 | $13.4M | 0.03% | +396,039+803.9% | Added |
| Raymond James Financial Inc | 446,925 | $13.4M | 0.00% | −7,492−1.6% | Reduced |
| Opaleye Management Inc. | 450,000 | $13.5M | 1.91% | +450,000 | New |