Alkermes plc. hedge fund holdings
ALKSNASDAQ$41.75+1.21 (+2.98% today)
Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.
Price vs funds buying and selling
ALKS · close · 13FReported Aug 14, 2026Price vs funds buying and selling data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+33.6%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.Price and fund activity data
| Quarter | Funds buying | Funds selling | Bought | Sold | Filers | Reported |
|---|---|---|---|---|---|---|
| Q2 2025 | 127 | 129 | $384M | $443M | 326 | Aug 14, 2025 |
| Q3 2025 | 131 | 125 | $539M | $391M | 331 | Nov 14, 2025 |
| Q4 2025 | 136 | 125 | $625M | $502M | 340 | Feb 14, 2026 |
| Q1 2026 | 129 | 137 | $630M | $653M | 369 | May 15, 2026 |
| Q2 2026 | 164 | 144 | $857M | $1.07B | 394 | Aug 14, 2026 |
Quarterly action breakdown
Q2 2026
394 filersNew position
75$252M+4.82M sh
Increased
89$604M+11.5M sh
Reduced
100-$906M-17.3M sh
Out / sold
44-$160M-3.05M sh
Last 4 quarters · free
Reported Aug 14, 2026
| Fund | Action | Change in dollar | Value | % of portfolio | Reported |
|---|---|---|---|---|---|
| Adage Capital Partners GP, L.L.C. | New Buy | +$71.7M | $71.7M | 0.10% | Aug 14, 2026 |
| Bain Capital Life Sciences Investors, LLC | Added 217.69% | +$69.6M | $102M | 6.04% | Aug 14, 2026 |
| Holocene Advisors, LP | Added 55.41% | +$67.3M | $189M | 0.43% | Aug 14, 2026 |
| Commodore Capital LP | Reduce 28.57% | -$62.9M | $157M | 9.36% | Aug 14, 2026 |
| Summit Partners Public Asset Management, LLC | New Buy | +$49.8M | $49.8M | 0.88% | Aug 14, 2026 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Added 383.67% | +$48.2M | $60.7M | 0.06% | Aug 13, 2026 |
| Avoro Capital Advisors LLC | Sell 100% | -$42.4M | $0 | 0.00% | Aug 14, 2026 |
| Pacer Advisors, Inc. | Reduce 98.62% | -$35.6M | $499K | 0.00% | Aug 13, 2026 |
| Frontier Capital Management Co LLC | New Buy | +$34.6M | $34.6M | 0.32% | Aug 14, 2026 |
| First Trust Advisors LP | Reduce 18.45% | -$28.7M | $127M | 0.07% | Aug 11, 2026 |
| Artia Global Partners LP | New Buy | +$23.5M | $23.5M | 4.34% | Aug 14, 2026 |
| Driehaus Capital Management LLC | Added 56.42% | +$23.4M | $64.9M | 0.38% | Aug 14, 2026 |
| Deep Track Capital, LP | Added 11.41% | +$21.5M | $210M | 3.05% | Aug 14, 2026 |
| Silverarc Capital Management, LLC | Reduce 75.34% | -$18.2M | $5.95M | 0.62% | Aug 13, 2026 |
| Ensign Peak Advisors, Inc | Added 3498.20% | +$17.1M | $17.6M | 0.03% | Aug 14, 2026 |
| Artisan Partners Limited Partnership | Reduce 25.25% | -$14.7M | $43.5M | 0.07% | Aug 13, 2026 |
| Logos Global Management LP | Sell 100% | -$12.4M | $0 | 0.00% | Aug 14, 2026 |
| Spruce Street Capital LP | Added 71.03% | +$11.8M | $28.5M | 5.59% | Aug 13, 2026 |
| Affinity Asset Advisors, LLC | Reduce 16.67% | -$11.8M | $58.9M | 2.66% | Aug 13, 2026 |
| Capital Fund Management S.A. | Reduce 86.31% | -$11M | $1.74M | 0.01% | Aug 13, 2026 |
| Loomis Sayles & Co L P | Reduce 11.15% | -$10.4M | $83.1M | 0.10% | Aug 14, 2026 |
| T. Rowe Price Investment Management, Inc. | Added 21.99% | +$10.3M | $57.2M | 0.04% | Aug 14, 2026 |
| Aberdeen Group plc | New Buy | +$10.2M | $10.2M | 0.01% | Jul 31, 2026 |
| Wellington Management Group LLP | Reduce 5.23% | -$8.14M | $147M | 0.03% | Aug 14, 2026 |
| BVF Inc | Added 7.74% | +$8.11M | $113M | 2.89% | Aug 14, 2026 |
| Cinctive Capital Management LP | New Buy | +$7.26M | $7.26M | 0.27% | Aug 14, 2026 |
| Gendell Jeffrey L | Added 50.18% | +$6.93M | $20.7M | 0.18% | Aug 14, 2026 |
| Robeco Institutional Asset Management B.V. | Reduce 58.01% | -$6.7M | $4.85M | 0.01% | Jul 21, 2026 |
| Prosight Management, LP | Reduce 23.22% | -$6.25M | $20.7M | 3.56% | Aug 14, 2026 |
| Bellevue Group AG | Added 1255.61% | +$5.84M | $6.3M | 0.13% | Aug 14, 2026 |
| HighVista Strategies LLC | Added 144.92% | +$5.56M | $9.39M | 2.14% | Aug 14, 2026 |
| Pictet Asset Management Holding SA | Reduce 11.05% | -$5.47M | $44M | 0.04% | Jul 30, 2026 |
| Wedge Capital Management L L P | Sell 100% | -$5.35M | $0 | 0.00% | Jul 10, 2026 |
| Integral Health Asset Management, LLC | New Buy | +$5.24M | $5.24M | 0.21% | Aug 14, 2026 |
| Rafferty Asset Management, LLC | Reduce 61.23% | -$5.21M | $3.3M | 0.01% | Aug 14, 2026 |
| Neo Ivy Capital Management | New Buy | +$5.02M | $5.02M | 1.16% | Aug 14, 2026 |
| Carrera Capital Advisors | New Buy | +$4.72M | $4.72M | 0.70% | Aug 3, 2026 |
| Segall Bryant & Hamill, LLC | Reduce 14.95% | -$4.59M | $26.1M | 0.31% | Aug 12, 2026 |
| Krensavage Asset Management, LLC | Sell 100% | -$3.81M | $0 | 0.00% | Aug 14, 2026 |
| Eagle Health Investments LP | Added 24.56% | +$3.07M | $15.6M | 2.58% | Aug 10, 2026 |
| Militia Capital Management LLC | Reduce 59.67% | -$2.99M | $2.02M | 0.06% | Aug 12, 2026 |
| Bridgewater Associates, LP | Sell 100% | -$2.96M | $0 | 0.00% | Aug 14, 2026 |
| Atika Capital Management LLC | New Buy | +$2.91M | $2.91M | 0.19% | Aug 13, 2026 |
| Baird Financial Group, Inc. | New Buy | +$2.79M | $2.79M | 0.00% | Aug 12, 2026 |
| Rhenman & Partners Asset Management AB | Added 39.02% | +$2.72M | $9.71M | 0.92% | Aug 13, 2026 |
| Hennion & Walsh Asset Management, Inc. | New Buy | +$2.48M | $2.48M | 0.07% | Jul 8, 2026 |
| KLP Kapitalforvaltning As | Reduce 56.39% | -$2.43M | $1.88M | 0.01% | Aug 12, 2026 |
| Kornitzer Capital Management Inc | New Buy | +$2.25M | $2.25M | 0.05% | Jul 31, 2026 |
| Hussman Strategic Advisors, Inc. | New Buy | +$2.2M | $2.2M | 0.51% | Aug 3, 2026 |
| Senator Investment Group LP | Added 17.02% | +$2.1M | $14.4M | 0.53% | Aug 12, 2026 |
| Schroder Investment Management Group | Sell 100% | -$2.03M | $0 | 0.00% | Aug 13, 2026 |
| DAFNA Capital Management LLC | Reduce 27.40% | -$2M | $5.31M | 1.01% | Aug 14, 2026 |
| Profund Advisors LLC | Reduce 48.53% | -$1.98M | $2.1M | 0.06% | Aug 11, 2026 |
| Edgestream Partners, L.P. | Sell 100% | -$1.87M | $0 | 0.00% | Aug 11, 2026 |
| Zacks Investment Management | Sell 100% | -$1.77M | $0 | 0.00% | Aug 13, 2026 |
| Great Point Partners LLC | Sell 100% | -$1.77M | $0 | 0.00% | Aug 14, 2026 |
| Diadema Partners LP | Sell 100% | -$1.77M | $0 | 0.00% | Aug 14, 2026 |
| ADAR1 Capital Management, LLC | Sell 100% | -$1.64M | $0 | 0.00% | Aug 14, 2026 |
| CenterBook Partners LP | Reduce 80.83% | -$1.64M | $388K | 0.02% | Aug 11, 2026 |
| Gotham Asset Management, LLC | Reduce 73.15% | -$1.59M | $585K | 0.00% | Aug 14, 2026 |
| Tetragon Partners GP Ltd | Added 18.89% | +$1.58M | $9.95M | 1.57% | Aug 13, 2026 |
| Atle Fund Management AB | Reduce 12.02% | -$1.53M | $11.2M | 3.01% | Jul 24, 2026 |
| Fisher Asset Management, LLC | Added 7.33% | +$1.5M | $22M | 0.01% | Aug 4, 2026 |
| Tidal Investments LLC | Sell 100% | -$1.46M | $0 | 0.00% | Aug 13, 2026 |
| State of Alaska, Department of Revenue | Reduce 29.49% | -$1.4M | $3.34M | 0.03% | Jul 20, 2026 |
| Massar Capital Management, LP | New Buy | +$1.36M | $1.36M | 0.13% | Aug 14, 2026 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | Sell 100% | -$1.34M | $0 | 0.00% | Aug 14, 2026 |
| Bridgefront Capital, LLC | Added 334.08% | +$1.28M | $1.66M | 0.44% | Aug 14, 2026 |
| Exome Asset Management LLC | Reduce 27.07% | -$1.19M | $3.21M | 1.98% | Aug 14, 2026 |
| SummitTX Capital, L.P. | Reduce 14.12% | -$1.16M | $7.03M | 0.18% | Aug 14, 2026 |
| VANGUARD ASSET MANAGEMENT, Ltd | Added 15.65% | +$1.12M | $8.27M | 0.01% | Aug 13, 2026 |
| Perbak Capital Partners LLP | Sell 100% | -$1.1M | $0 | Not reported | Aug 14, 2026 |
| Mitsubishi UFJ Asset Management Co., Ltd. | Added 2228.96% | +$1.03M | $1.08M | 0.00% | Aug 7, 2026 |
| Allstate Corp | Reduce 63.70% | -$973K | $555K | 0.01% | Aug 13, 2026 |
| Persistent Asset Partners Ltd | Reduce 63.47% | -$850K | $489K | 0.15% | Aug 7, 2026 |
| Vestmark Advisory Solutions, Inc. | New Buy | +$829K | $829K | 0.01% | Aug 14, 2026 |
| Rock Springs Capital Management LP | Added 8.60% | +$829K | $10.5M | 0.51% | Aug 14, 2026 |
| Farallon Capital Management, L.L.C. | Sell 100% | -$735K | $0 | 0.00% | Aug 14, 2026 |
| IMC-Chicago, LLC | Added 196.31% | +$708K | $1.07M | 0.00% | Aug 6, 2026 |
| E Fund Management Co., Ltd. | Reduce 57.56% | -$631K | $465K | 0.01% | Aug 11, 2026 |
| Peregrine Capital Management LLC | Reduce 4.82% | -$616K | $12.2M | 0.40% | Jul 17, 2026 |
| Primecap Management Co | Reduce 0.45% | -$593K | $132M | 0.08% | Aug 14, 2026 |
| OMERS ADMINISTRATION Corp | Sell 100% | -$584K | $0 | 0.00% | Aug 13, 2026 |
| Aviva PLC | Sell 100% | -$543K | $0 | 0.00% | Aug 13, 2026 |
| DNB Asset Management AS | Reduce 33.41% | -$534K | $1.07M | 0.00% | Aug 11, 2026 |
| AdvisorShares Investments LLC | Added 38.18% | +$528K | $1.91M | 0.23% | Aug 11, 2026 |
| Vontobel Holding Ltd. | Reduce 31.24% | -$525K | $1.16M | 0.00% | Aug 3, 2026 |
| Weiss Asset Management LP | New Buy | +$522K | $522K | 0.01% | Aug 14, 2026 |
| Daiwa Securities Group Inc. | Sell 100% | -$474K | $0 | 0.00% | Jul 31, 2026 |
| Yorktown Management & Research Co Inc | New Buy | +$466K | $466K | 0.29% | Jul 23, 2026 |
| Illinois Municipal Retirement Fund | Reduce 7.93% | -$378K | $4.39M | 0.05% | Aug 12, 2026 |
| Lombard Odier Asset Management (USA) Corp | Sell 100% | -$362K | $0 | 0.00% | Aug 14, 2026 |
| Hudson Portfolio Management LLC | Reduce 19.56% | -$330K | $1.36M | 1.03% | Aug 12, 2026 |
| Praxis Investment Management Inc | New Buy | +$304K | $304K | 0.02% | Aug 4, 2026 |
| GTS Securities LLC | Sell 100% | -$300K | $0 | 0.00% | Aug 14, 2026 |
| Wealth Effects LLC | New Buy | +$299K | $299K | 0.08% | Aug 6, 2026 |
| Summit Global Investments | Reduce 48.67% | -$298K | $314K | 0.02% | Aug 3, 2026 |
| Vise Technologies, Inc. | New Buy | +$297K | $297K | 0.00% | Aug 11, 2026 |
| Elevation Point Wealth Partners, LLC | New Buy | +$292K | $292K | 0.01% | Aug 12, 2026 |
| Cary Street Partners Financial LLC | New Buy | +$289K | $289K | 0.01% | Jul 17, 2026 |