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 |
|---|---|---|---|---|---|
| Neuberger Berman Group LLC | 197,220 | $6.97M | 0.01% | +44,448+29.1% | Added |
| ExodusPoint Capital Management, LP | 204,324 | $7.22M | 0.07% | +204,324 | New |
| Alliancebernstein L.P. | 260,935 | $7.30M | 0.00% | +45,081+20.9% | Added |
| Engineers Gate Manager LP | 208,497 | $7.37M | 0.09% | +160,766+336.8% | Added |
| Robeco Institutional Asset Management B.V. | 220,521 | $7.80M | 0.01% | −65,149−22.8% | Reduced |
| Acadian Asset Management LLC | 227,939 | $8.05M | 0.01% | −294,158−56.3% | Reduced |
| HealthInvest Partners AB | 242,473 | $8.24M | 2.66% | 00.0% | Unchanged |
| Senator Investment Group LP | 235,000 | $8.32M | 0.38% | +235,000 | New |
| Eagle Health Investments LP | 238,673 | $8.44M | 1.77% | +156,873+191.8% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 239,671 | $8.47M | 0.01% | −1,462−0.6% | Reduced |
| Palo Alto Investors LP | 242,560 | $8.58M | 1.31% | 00.0% | Unchanged |
| Capital Fund Management S.A. | 243,043 | $8.59M | 0.08% | +92,268+61.2% | Added |
| Peregrine Capital Management LLC | 244,007 | $8.63M | 0.32% | −10,326−4.1% | Reduced |
| S&CO Inc | 244,760 | $8.65M | 0.54% | +43,000+21.3% | Added |
| Mackenzie Financial Corp | 249,182 | $8.81M | 0.01% | +153,735+161.1% | Added |
| C WorldWide Group Holding A/S | 250,000 | $8.84M | 0.19% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 277,619 | $9.82M | 0.02% | −818,227−74.7% | Reduced |
| Raymond James Financial Inc | 317,434 | $9.98M | 0.00% | −10,771−3.3% | Reduced |
| Virginia Retirement Systems Et Al | 300,383 | $10.6M | 0.08% | −676,100−69.2% | Reduced |
| Royal Bank of Canada | 304,337 | $10.8M | 0.00% | −21,159−6.5% | Reduced |
| Victory Capital Management Inc | 308,929 | $10.9M | 0.01% | −93,649−23.3% | Reduced |
| Swiss National Bank | 310,300 | $11.0M | 0.01% | +1,100+0.4% | Added |
| Spruce Street Capital LP | 317,992 | $11.2M | 2.70% | +317,992 | New |
| California Public Employees Retirement System | 328,202 | $11.6M | 0.01% | +3,624+1.1% | Added |
| Nomura Asset Management International Inc. | 339,998 | $12.0M | 0.02% | −21,389−5.9% | Reduced |
| Logos Global Management LP | 350,000 | $12.4M | 0.64% | +350,000 | New |
| Gendell Jeffrey L | 351,473 | $12.4M | 0.17% | +351,473 | New |
| Glenmede Trust Co NA | 378,090 | $13.4M | 0.07% | −34,830−8.4% | Reduced |
| Legal & General Group Plc | 380,722 | $13.5M | 0.00% | −48,775−11.4% | Reduced |
| AQR Capital Management LLC | 383,977 | $13.6M | 0.01% | −130,347−25.3% | Reduced |
| Rice Hall James & Associates, LLC | 390,344 | $13.8M | 0.77% | +10,886+2.9% | Added |
| Fisher Asset Management, LLC | 390,479 | $13.8M | 0.00% | −140.0% | Reduced |
| UBS Asset Management Americas Inc | 403,153 | $14.3M | 0.00% | +8,300+2.1% | Added |
| Rhumbline Advisers | 449,531 | $15.9M | 0.01% | +10,336+2.4% | Added |
| Silverarc Capital Management, LLC | 460,314 | $16.3M | 1.92% | +460,314 | New |
| UBS Group AG | 495,023 | $17.5M | 0.00% | −2,049,872−80.5% | Reduced |
| Prosight Management, LP | 513,632 | $18.2M | 2.98% | +513,632 | New |
| Invesco Ltd. | 524,275 | $18.5M | 0.00% | −14,441−2.7% | Reduced |
| BNP Paribas Arbitrage, SA | 527,967 | $18.7M | 0.01% | +97,637+22.7% | Added |
| Woodline Partners LP | 558,567 | $19.8M | 0.07% | 00.0% | Unchanged |
| Segall Bryant & Hamill, LLC | 585,769 | $20.7M | 0.30% | −29,523−4.8% | Reduced |
| Balyasny Asset Management LLC | 586,775 | $20.7M | 0.04% | −92,858−13.7% | Reduced |
| Bain Capital Life Sciences Investors, LLC | 610,000 | $21.6M | 1.95% | +610,000 | New |
| Man Group plc | 625,046 | $22.1M | 0.05% | +312,534+100.0% | Added |
| Public Sector Pension Investment Board | 677,405 | $24.0M | 0.07% | +6,235+0.9% | Added |
| Pacer Advisors, Inc. | 688,563 | $24.3M | 0.07% | +13,689+2.0% | Added |
| Frazier Life Sciences Management, L.P. | 700,647 | $24.8M | 0.64% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 710,297 | $25.1M | 0.02% | −200,975−22.1% | Reduced |
| Ameriprise Financial Inc | 741,141 | $26.2M | 0.01% | +209,779+39.5% | Added |
| Two Sigma Investments, LP | 780,683 | $27.6M | 0.02% | −432,714−35.7% | Reduced |
| Driehaus Capital Management LLC | 791,963 | $28.0M | 0.21% | −5,005−0.6% | Reduced |
| Pictet Asset Management Holding SA | 942,184 | $30.2M | 0.03% | −535,030−36.2% | Reduced |
| T. Rowe Price Investment Management, Inc. | 894,276 | $31.6M | 0.02% | +892,177+42,504.9% | Added |
| Panagora Asset Management Inc | 932,942 | $33.0M | 0.12% | +3,978+0.4% | Added |
| Principal Financial Group Inc | 958,016 | $33.9M | 0.02% | +10,393+1.1% | Added |
| Marshall Wace, LLP | 999,322 | $35.3M | 0.04% | +869,423+669.3% | Added |
| Bank of New York Mellon Corp | 1,036,460 | $36.6M | 0.01% | −37,627−3.5% | Reduced |
| Artisan Partners Limited Partnership | 1,111,741 | $39.3M | 0.06% | −237,381−17.6% | Reduced |
| Vanguard Fiduciary Trust Co | 1,129,236 | $39.9M | 0.01% | +1,129,236 | New |
| Avoro Capital Advisors LLC | 1,200,000 | $42.4M | 0.42% | −200,000−14.3% | Reduced |
| Bank of America Corp | 1,210,851 | $42.8M | 0.00% | −122,254−9.2% | Reduced |
| FMR LLC | 1,323,747 | $46.8M | 0.00% | −31,506−2.3% | Reduced |
| Affinity Asset Advisors, LLC | 1,350,000 | $47.7M | 2.80% | +350,000+35.0% | Added |
| RTW Investments, LP | 1,672,356 | $59.1M | 0.59% | 00.0% | Unchanged |
| Northern Trust Corp | 1,697,082 | $60.0M | 0.01% | +43,607+2.6% | Added |
| Morgan Stanley | 1,736,091 | $61.4M | 0.00% | −152,396−8.1% | Reduced |
| Loomis Sayles & Co L P | 1,784,581 | $63.1M | 0.08% | −117,941−6.2% | Reduced |
| Goldman Sachs Group Inc | 1,882,178 | $66.6M | 0.01% | −385,410−17.0% | Reduced |
| Soleus Capital Management, L.P. | 1,970,864 | $69.7M | 2.82% | +648,500+49.0% | Added |
| BVF Inc | 2,000,000 | $70.7M | 2.25% | +2,000,000 | New |
| Charles Schwab Investment Management Inc | 2,236,756 | $79.1M | 0.01% | +84,000+3.9% | Added |
| Citadel Advisors LLC | 2,241,584 | $79.3M | 0.06% | +1,043,316+87.1% | Added |
| Holocene Advisors, LP | 2,317,326 | $81.9M | 0.20% | +2,317,326 | New |
| Nuveen, LLC | 2,460,569 | $87.0M | 0.02% | +33,541+1.4% | Added |
| Primecap Management Co | 2,539,990 | $89.8M | 0.07% | −24,310−0.9% | Reduced |
| First Trust Advisors LP | 2,968,785 | $105.0M | 0.08% | +1,514,783+104.2% | Added |
| Wellington Management Group LLP | 2,970,166 | $105.0M | 0.02% | −50,276−1.7% | Reduced |
| JPMorgan Chase & Co | 4,101,789 | $123.7M | 0.01% | −1,082,758−20.9% | Reduced |
| Deep Track Capital, LP | 3,590,323 | $127.0M | 2.62% | +1,590,323+79.5% | Added |
| Geode Capital Management, LLC | 4,182,267 | $147.9M | 0.01% | +101,491+2.5% | Added |
| Commodore Capital LP | 4,200,000 | $148.5M | 8.59% | +650,000+18.3% | Added |
| Dimensional Fund Advisors LP | 4,522,378 | $159.9M | 0.03% | +109,595+2.5% | Added |
| Price T Rowe Associates Inc | 4,664,576 | $164.9M | 0.02% | −4,334,387−48.2% | Reduced |
| American Century Companies Inc | 6,072,103 | $214.7M | 0.11% | +115,279+1.9% | Added |
| Renaissance Technologies LLC | 6,160,428 | $217.8M | 0.34% | −507,600−7.6% | Reduced |
| Vanguard Capital Management LLC | 7,427,397 | $262.6M | 0.01% | +7,427,397 | New |
| State Street Corp | 9,465,286 | $334.7M | 0.01% | −7,572−0.1% | Reduced |
| Vanguard Portfolio Management LLC | 9,511,112 | $336.3M | 0.02% | +9,511,112 | New |
| Baker Bros. Advisors LP | 10,012,267 | $354.0M | 2.03% | 00.0% | Unchanged |
| BlackRock, Inc. | 28,314,410 | $1.00B | 0.02% | +41,998+0.1% | Added |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −1,450,841−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −562,587−100.0% | Sold out |
| Opaleye Management Inc. | 0 | $0 | 0.00% | −490,000−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −276,558−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −273,158−100.0% | Sold out |
| TrimTabs Asset Management, LLC | 0 | $0 | 0.00% | −219,495−100.0% | Sold out |
| Hussman Strategic Advisors, Inc. | 0 | $0 | 0.00% | −105,000−100.0% | Sold out |
| Sio Capital Management, LLC | 0 | $0 | 0.00% | −95,353−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −82,720−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −79,336−100.0% | Sold out |