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, Q2 2026
Institutional positions in Alkermes plc. as of Jun 30, 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
- 425
- +39 vs. Q1 2026
- Shares held
- 177.9M
- +1.49M (+0.8%) vs. Q1 2026
- Total value
- $9.32B
- +$3.11B (+50.1%) vs. Q1 2026
- New holders
- 90
- 141 more added
- Sold out
- 51
- 137 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Alkermes plc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 29,235,739 | $1.53B | 0.02% | +921,329+3.3% | Added |
| Baker Bros. Advisors LP | 10,012,267 | $524.6M | 2.63% | 00.0% | Unchanged |
| Vanguard Portfolio Management LLC | 9,490,818 | $497.3M | 0.02% | −20,294−0.2% | Reduced |
| State Street Corp | 9,160,575 | $480.0M | 0.01% | −304,711−3.2% | Reduced |
| Vanguard Capital Management LLC | 7,515,025 | $393.7M | 0.01% | +87,628+1.2% | Added |
| Price T Rowe Associates Inc | 6,737,328 | $353.0M | 0.04% | +2,072,752+44.4% | Added |
| Renaissance Technologies LLC | 6,460,928 | $338.5M | 0.47% | +300,500+4.9% | Added |
| Geode Capital Management, LLC | 4,477,876 | $234.7M | 0.01% | +295,609+7.1% | Added |
| Dimensional Fund Advisors LP | 4,194,873 | $219.8M | 0.04% | −327,505−7.2% | Reduced |
| Deep Track Capital, LP | 4,000,000 | $209.6M | 3.09% | +409,677+11.4% | Added |
| American Century Companies Inc | 3,954,239 | $207.2M | 0.09% | −2,117,864−34.9% | Reduced |
| Holocene Advisors, LP | 3,601,472 | $188.7M | 0.43% | +1,284,146+55.4% | Added |
| Commodore Capital LP | 3,000,000 | $157.2M | 9.36% | −1,200,000−28.6% | Reduced |
| Wellington Management Group LLP | 2,814,804 | $147.5M | 0.03% | −155,362−5.2% | Reduced |
| Primecap Management Co | 2,528,680 | $132.5M | 0.08% | −11,310−0.4% | Reduced |
| First Trust Advisors LP | 2,421,016 | $126.8M | 0.07% | −547,769−18.5% | Reduced |
| Charles Schwab Investment Management Inc | 2,335,117 | $122.3M | 0.02% | +98,361+4.4% | Added |
| Nuveen, LLC | 2,324,197 | $121.8M | 0.03% | −136,372−5.5% | Reduced |
| Norges Bank | 2,156,814 | $113.0M | 0.01% | +2,156,814 | New |
| BVF Inc | 2,154,704 | $112.9M | 2.89% | +154,704+7.7% | Added |
| Goldman Sachs Group Inc | 2,023,984 | $106.0M | 0.01% | +141,806+7.5% | Added |
| Bain Capital Life Sciences Investors, LLC | 1,937,938 | $101.5M | 6.04% | +1,327,938+217.7% | Added |
| Northern Trust Corp | 1,831,619 | $96.0M | 0.01% | +134,537+7.9% | Added |
| Morgan Stanley | 1,751,882 | $91.8M | 0.00% | +15,791+0.9% | Added |
| RTW Investments, LP | 1,672,356 | $87.6M | 0.75% | 00.0% | Unchanged |
| Citadel Advisors LLC | 1,645,101 | $86.2M | 0.05% | −596,483−26.6% | Reduced |
| Loomis Sayles & Co L P | 1,585,518 | $83.1M | 0.10% | −199,063−11.2% | Reduced |
| Adage Capital Partners GP, L.L.C. | 1,368,000 | $71.7M | 0.10% | +1,368,000 | New |
| D. E. Shaw & Co., Inc. | 1,312,031 | $68.7M | 0.04% | +601,734+84.7% | Added |
| Driehaus Capital Management LLC | 1,238,809 | $64.9M | 0.38% | +446,846+56.4% | Added |
| Vanguard Fiduciary Trust Co | 1,177,945 | $61.7M | 0.01% | +48,709+4.3% | Added |
| Franklin Resources Inc | 1,170,242 | $61.3M | 0.01% | +987,707+541.1% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,159,216 | $60.7M | 0.06% | +919,545+383.7% | Added |
| FMR LLC | 1,134,410 | $59.4M | 0.00% | −189,337−14.3% | Reduced |
| Affinity Asset Advisors, LLC | 1,125,000 | $58.9M | 2.88% | −225,000−16.7% | Reduced |
| Bank of New York Mellon Corp | 1,097,282 | $57.5M | 0.01% | +60,822+5.9% | Added |
| T. Rowe Price Investment Management, Inc. | 1,090,947 | $57.2M | 0.04% | +196,671+22.0% | Added |
| Two Sigma Investments, LP | 1,038,311 | $54.4M | 0.04% | +257,628+33.0% | Added |
| Soleus Capital Management, L.P. | 1,029,252 | $53.9M | 1.86% | −941,612−47.8% | Reduced |
| Principal Financial Group Inc | 983,822 | $51.5M | 0.03% | +25,806+2.7% | Added |
| Marshall Wace, LLP | 969,954 | $50.8M | 0.04% | −29,368−2.9% | Reduced |
| Summit Partners Public Asset Management, LLC | 950,234 | $49.8M | 1.29% | +950,234 | New |
| Bank of America Corp | 918,303 | $48.1M | 0.00% | −292,548−24.2% | Reduced |
| Victory Capital Management Inc | 916,709 | $48.0M | 0.03% | +607,780+196.7% | Added |
| Pictet Asset Management Holding SA | 838,026 | $44.0M | 0.04% | −104,158−11.1% | Reduced |
| Artisan Partners Limited Partnership | 831,006 | $43.5M | 0.07% | −280,735−25.3% | Reduced |
| Panagora Asset Management Inc | 765,543 | $40.1M | 0.12% | −167,399−17.9% | Reduced |
| Frazier Life Sciences Management, L.P. | 700,647 | $36.7M | 0.80% | 00.0% | Unchanged |
| Public Sector Pension Investment Board | 677,405 | $35.5M | 0.09% | 00.0% | Unchanged |
| Frontier Capital Management Co LLC | 659,562 | $34.6M | 0.32% | +659,562 | New |
| BNP Paribas Arbitrage, SA | 655,140 | $34.3M | 0.02% | +127,173+24.1% | Added |
| Ameriprise Financial Inc | 630,325 | $33.0M | 0.01% | −110,816−15.0% | Reduced |
| Woodline Partners LP | 560,282 | $29.4M | 0.09% | +1,715+0.3% | Added |
| Spruce Street Capital LP | 543,876 | $28.5M | 5.59% | +225,884+71.0% | Added |
| MetLife Investment Management | 512,924 | $26.9M | 0.12% | +424,072+477.3% | Added |
| Segall Bryant & Hamill, LLC | 498,222 | $26.1M | 0.31% | −87,547−14.9% | Reduced |
| Artia Global Partners LP | 448,964 | $23.5M | 4.47% | +448,964 | New |
| Invesco Ltd. | 443,107 | $23.2M | 0.00% | −81,168−15.5% | Reduced |
| Raymond James Financial Inc | 422,761 | $22.2M | 0.01% | +105,327+33.2% | Added |
| Fisher Asset Management, LLC | 419,102 | $22.0M | 0.01% | +28,623+7.3% | Added |
| Gendell Jeffrey L | 395,882 | $20.7M | 0.19% | +44,409+12.6% | Added |
| Prosight Management, LP | 394,389 | $20.7M | 3.56% | −119,243−23.2% | Reduced |
| Legal & General Group Plc | 393,524 | $20.6M | 0.00% | +12,802+3.4% | Added |
| Rice Hall James & Associates, LLC | 390,866 | $20.5M | 1.00% | +522+0.1% | Added |
| Rhumbline Advisers | 387,999 | $20.3M | 0.02% | −61,532−13.7% | Reduced |
| Glenmede Trust Co NA | 361,184 | $18.9M | 0.08% | −16,906−4.5% | Reduced |
| California Public Employees Retirement System | 347,246 | $18.2M | 0.01% | +19,044+5.8% | Added |
| Nomura Asset Management International Inc. | 337,043 | $17.7M | 0.03% | −2,955−0.9% | Reduced |
| Ensign Peak Advisors, Inc | 335,208 | $17.6M | 0.03% | +325,892+3,498.2% | Added |
| Millennium Management LLC | 319,595 | $16.7M | 0.01% | +319,595 | New |
| Swiss National Bank | 316,900 | $16.6M | 0.01% | +6,600+2.1% | Added |
| UBS Group AG | 300,350 | $15.7M | 0.00% | −194,673−39.3% | Reduced |
| Eagle Health Investments LP | 297,302 | $15.6M | 2.58% | +58,629+24.6% | Added |
| GW&K Investment Management, LLC | 292,387 | $15.3M | 0.12% | +292,387 | New |
| Senator Investment Group LP | 275,000 | $14.4M | 0.53% | +40,000+17.0% | Added |
| JPMorgan Chase & Co | 262,721 | $14.2M | 0.00% | −3,839,068−93.6% | Reduced |
| Neuberger Berman Group LLC | 260,208 | $13.6M | 0.01% | +62,988+31.9% | Added |
| C WorldWide Group Holding A/S | 250,000 | $13.1M | 0.32% | 00.0% | Unchanged |
| StemPoint Capital LP | 248,015 | $13.0M | 2.25% | +167,523+208.1% | Added |
| S&CO Inc | 244,760 | $12.8M | 0.74% | 00.0% | Unchanged |
| Palo Alto Investors LP | 242,560 | $12.7M | 1.76% | 00.0% | Unchanged |
| Peregrine Capital Management LLC | 232,255 | $12.2M | 0.40% | −11,752−4.8% | Reduced |
| Russell Investments Group, Ltd. | 222,624 | $11.7M | 0.01% | +123,906+125.5% | Added |
| Federated Hermes, Inc. | 221,589 | $11.6M | 0.02% | +192,130+652.2% | Added |
| Barclays PLC | 219,935 | $11.5M | 0.00% | +44,952+25.7% | Added |
| Amundi | 217,739 | $11.4M | 0.00% | +153,029+236.5% | Added |
| HealthInvest Partners AB | 213,329 | $11.2M | 3.01% | −29,144−12.0% | Reduced |
| AQR Capital Management LLC | 212,968 | $11.2M | 0.00% | −171,009−44.5% | Reduced |
| Rock Springs Capital Management LP | 199,811 | $10.5M | 0.51% | +15,825+8.6% | Added |
| Wells Fargo & Company | 199,433 | $10.4M | 0.00% | +81,507+69.1% | Added |
| California State Teachers Retirement System | 197,412 | $10.3M | 0.01% | +13,617+7.4% | Added |
| Schonfeld Strategic Advisors LLC | 195,174 | $10.2M | 0.05% | +178,590+1,076.9% | Added |
| Standard Life Aberdeen plc | 193,805 | $10.2M | 0.01% | +193,805 | New |
| Deutsche Bank AG | 191,316 | $10.0M | 0.00% | +41,582+27.8% | Added |
| Polygon Management Ltd. | 189,979 | $9.95M | 1.62% | +30,188+18.9% | Added |
| Rhenman & Partners Asset Management AB | 185,250 | $9.71M | 0.92% | +52,000+39.0% | Added |
| Citigroup Inc | 184,901 | $9.69M | 0.00% | +137,451+289.7% | Added |
| HighVista Strategies LLC | 179,256 | $9.39M | 2.14% | +106,067+144.9% | Added |
| Martingale Asset Management L P | 170,004 | $8.91M | 0.21% | −24,762−12.7% | Reduced |
| SG Americas Securities, LLC | 164,236 | $8.61M | 0.00% | −14,757−8.2% | Reduced |