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Alkermes (ALKS) Institutional Ownership

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$43.39 -3.32 (-7.11%)
Closing price 09/18/2026 04:00 PM Eastern
Extended Trading
$43.34 -0.05 (-0.11%)
As of 09/18/2026 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Alkermes (NASDAQ:ALKS)

Current
Institutional Ownership
Percentage
95.21%
Number of
Institutional Buyers
(last 12 months)
215
Total
Institutional Inflows
(last 12 months)
$891.02M
Number of
Institutional Sellers
(last 12 months)
144
Total
Institutional Outflows
(last 12 months)
$553.89M
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ALKS Institutional Buying and Selling by Quarter

Alkermes Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026 Sequoia Financial Advisors LLC8,237$432K0.0%-11.2%0.005%
9/9/2026 Integrated Wealth Concepts LLC2,152$113K0.0%N/A0.001%
9/9/2026 IFP Advisors Inc639$33K0.0%-54.3%0.000%
9/9/2026 Squarepoint Ops LLC115,195$6.04M0.0%-58.5%0.069%
9/9/2026 Baird Financial Group Inc.53,267$2.79M0.0%N/A0.032%
9/8/2026 Arizona State Retirement System43,580$2.28M0.0%+1.1%0.026%
8/27/2026 Corient Private Wealth LP9,234$484K0.0%-20.0%0.006%
8/25/2026 VIRGINIA RETIREMENT SYSTEMS ET Al33,083$1.73M0.0%N/A0.020%
8/23/2026 Ameritas Advisory Services LLC750$39K0.0%N/A0.000%
8/23/2026 HB Wealth Management LLC4,208$220K0.0%N/A0.003%
8/22/2026 Seven Fleet Capital Management LP23,285$1.22M0.2%-3.7%0.014%
8/22/2026 Concurrent Investment Advisors LLC4,459$234K0.0%N/A0.003%
8/21/2026 Hudson Portfolio Management LLC25,930$1.36M1.0%-19.6%0.015%
8/20/2026 Headlands Technologies LLC14,313$750K0.1%N/A0.009%
8/19/2026 Wellington Management Group LLP2,814,804$147.48M0.0%-5.2%1.678%
8/18/2026 Public Employees Retirement System of Ohio5,088$267K0.0%N/A0.003%
8/12/2026 C M Bidwell & Associates Ltd.1,981$104K0.0%N/A0.001%
8/6/2026 S&CO Inc.244,760$12.82M0.7%N/A0.146%
7/9/2026 Hennion & Walsh Asset Management Inc.47,317$2.48M0.1%N/A0.028%
7/7/2026 GAMMA Investing LLC6,705$351K0.0%+24.5%0.004%
7/7/2026 Harbor Investment Advisory LLC1,556$82K0.0%N/A0.001%
7/2/2026 Versant Capital Management Inc1,445$76K0.0%+33.9%0.001%
6/18/2026 Pacer Advisors Inc.688,563$24.35M0.0%+2.0%0.413%
6/16/2026 Empowered Funds LLC7,817$276K0.0%-87.2%0.005%
6/4/2026 Seven Fleet Capital Management LP24,170$855K0.3%N/A0.015%
5/26/2026 Glenmede Trust Co. NA378,090$13.37M0.1%-8.4%0.227%
5/22/2026 Segall Bryant & Hamill LLC585,769$20.71M0.3%-4.8%0.351%
5/19/2026 Bank of America Corp DE1,210,851$42.82M0.0%-9.2%0.726%
5/19/2026 Stempoint Capital LP80,492$2.85M0.5%N/A0.048%
5/19/2026 Edgestream Partners L.P.52,826$1.87M0.1%-81.9%0.032%
5/19/2026Janus Henderson Group PLC154,016$5.45M0.0%+5.6%0.092%
5/18/2026 ADAR1 Capital Management LLC46,400$1.64M0.1%-27.2%0.028%
5/18/2026 Amundi64,710$2.29M0.0%+99.8%0.039%
5/18/2026 EverSource Wealth Advisors LLC3,278$116K0.0%+33.5%0.002%
5/18/2026 California State Teachers Retirement System183,795$6.50M0.0%+23.5%0.110%
5/18/2026 Royal Bank of Canada304,337$10.76M0.0%-6.5%0.183%
5/18/2026 Rock Springs Capital Management LP183,986$6.51M0.4%+32.1%0.110%
5/18/2026 Eagle Health Investments LP238,673$8.44M1.5%+191.8%0.143%
5/18/2026 Empowered Funds LLC7,817$276K0.0%-87.2%0.005%
5/18/2026 Exome Asset Management LLC84,103$2.97M1.5%N/A0.050%
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5/16/2026 The Manufacturers Life Insurance Company71,415$2.53M0.0%-37.2%0.043%
5/16/2026 Quantinno Capital Management LP44,932$1.59M0.0%+131.1%0.027%
5/16/2026 SummitTX Capital L.P.156,259$5.53M0.2%N/A0.094%
5/16/2026 ABS Direct Equity Fund LLC4,900$167K0.1%N/A0.003%
5/15/2026 Commodore Capital LP4,200,000$148.51M8.6%+18.3%2.520%
5/15/2026 OMERS ADMINISTRATION Corp16,516$584K0.0%+10.7%0.010%
5/15/2026 Rice Hall James & Associates LLC390,344$13.80M0.8%+2.9%0.234%
5/15/2026 Lombard Odier Asset Management USA Corp10,232$362K0.0%N/A0.006%
5/15/2026 Affinity Asset Advisors LLC1,350,000$47.74M2.5%+35.0%0.810%
5/15/2026 Entropy Technologies LP22,885$809K0.0%-64.1%0.014%
5/15/2026 Spruce Street Capital LP317,992$11.24M2.7%N/A0.191%
5/14/2026 Renaissance Technologies LLC6,160,428$217.83M0.3%-7.6%3.696%
5/14/2026 GC Wealth Management RIA LLC16,980$600K0.0%-54.6%0.010%
5/14/2026 Public Employees Retirement System of Ohio4,929$174K0.0%+413.4%0.003%
5/14/2026 Knott David M Jr120,000$4.24M2.5%+26.3%0.072%
5/14/2026 Sei Investments Co.153,817$5.44M0.0%-19.3%0.092%
5/14/2026 State of Wyoming14,676$519K0.1%-15.4%0.009%
5/13/2026 Cetera Investment Advisers14,758$522K0.0%-22.0%0.009%
5/13/2026 Militia Capital Management LLC31,918$1.13M0.2%N/A0.019%
5/13/2026 First Trust Advisors LP2,968,785$104.98M0.1%+104.2%1.781%
5/8/2026 PNC Financial Services Group Inc.11,318$400K0.0%+9.6%0.007%
5/8/2026 DUTCH ASSET Corp6,200$219K0.1%N/A0.004%
5/8/2026 Summit Global Investments11,691$413K0.0%-60.6%0.007%
5/7/2026 Dimensional Fund Advisors LP4,522,378$159.85M0.0%+2.5%2.720%
5/7/2026 S&CO Inc.244,760$8.65M0.5%+21.3%0.147%
5/7/2026 Swiss National Bank310,300$10.97M0.0%+0.4%0.187%
5/6/2026 California Public Employees Retirement System328,202$11.61M0.0%+1.1%0.197%
5/6/2026 Gallacher Capital Management LLC7,677$271K0.1%N/A0.005%
5/6/2026 AXS Investments LLC18,850$667K0.3%-3.3%0.011%
5/6/2026 Bessemer Group Inc.158,397$5.60M0.0%+0.5%0.095%
5/6/2026 Allspring Global Investments Holdings LLC24,610$863K0.0%+11.5%0.015%
5/5/2026 Bank of New York Mellon Corp1,036,460$36.65M0.0%-3.5%0.623%
5/5/2026 Illinois Municipal Retirement Fund90,989$3.22M0.0%-0.5%0.055%
5/5/2026 Sanctuary Advisors LLC9,825$347K0.0%-19.1%0.006%
5/4/2026 Empirical Financial Services LLC d.b.a. Empirical Wealth Management29,805$1.05M0.0%+20.1%0.018%
5/4/2026 Bleakley Financial Group LLC10,064$356K0.0%-31.7%0.006%
5/4/2026 Principal Financial Group Inc.958,016$33.88M0.0%+1.1%0.576%
5/4/2026 Teachers Retirement System of The State of Kentucky77,928$2.76M0.0%+18.5%0.047%
5/1/2026 Sequoia Financial Advisors LLC9,272$328K0.0%+4.8%0.006%
4/30/2026 Hsbc Holdings PLC48,337$1.73M0.0%+12.9%0.029%
4/30/2026 Sumitomo Mitsui Trust Group Inc.13,900$492K0.0%+4.0%0.008%
4/28/2026 AdvisorShares Investments LLC26,369$932K0.2%-13.8%0.016%
4/27/2026 Investors Asset Management of Georgia Inc. GA ADV8,600$303K0.1%N/A0.005%
4/27/2026 New York State Teachers Retirement System54,368$1.92M0.0%-29.7%0.033%
4/25/2026 Strs Ohio46,900$1.66M0.0%+1.7%0.028%
4/24/2026 Peregrine Capital Management LLC244,007$8.63M0.3%-4.1%0.147%
4/22/2026 Pictet Asset Management Holding SA942,184$33.32M0.0%-36.2%0.567%
4/22/2026 Sterling Capital Management LLC5,318$188K0.0%-34.7%0.003%
4/21/2026 Louisiana State Employees Retirement System73,200$2.59M0.0%N/A0.044%
4/20/2026 Ritholtz Wealth Management45,844$1.62M0.0%-28.5%0.028%
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4/20/2026 Assenagon Asset Management S.A.122,127$4.32M0.0%+10.7%0.073%
4/16/2026 SG Americas Securities LLC178,993$6.33M0.0%+399.0%0.108%
4/16/2026 Evolve Private Wealth LLC20,401$721K0.0%+3.3%0.012%
4/16/2026 Diversified Trust Co54,913$1.94M0.0%+11.9%0.033%
3/20/2026 Hsbc Holdings PLC42,817$1.20M0.0%+20.4%0.026%
3/17/2026 Rockefeller Capital Management L.P.1,411$39K0.0%-34.6%0.001%
3/16/2026 Avoro Capital Advisors LLC1,400,000$39.17M0.4%-37.5%0.840%
3/9/2026 Corient Private Wealth LLC21,932$612K0.0%-47.0%0.013%
3/9/2026 EMC Capital Management2,064$58K0.0%-15.0%0.001%
3/6/2026 Hsbc Holdings PLC42,817$1.20M0.0%+20.4%0.026%


ALKS Institutional Ownership - Frequently Asked Questions

During the previous two years, 388 institutional investors and hedge funds held shares of Alkermes. The most heavily invested institutionals were Vanguard Group Inc. ($503.85M), Baker BROS. Advisors LP ($280.14M), State Street Corp ($265.05M), Price T Rowe Associates Inc. MD ($251.79M), Renaissance Technologies LLC ($217.83M), RTW Investments LP ($217.36M), and Dimensional Fund Advisors LP ($159.85M).Learn more on Alkermes' institutional investors.

95.21% of Alkermes' stock is owned by institutional investors. Learn more on ALKS's institutional investor holdings.

Of the 340 institutional investors that purchased Alkermes' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: JPMorgan Chase & Co. ($6.13M), Norges Bank ($5.78M), Baker BROS. Advisors LP ($3.90M), Avoro Capital Advisors LLC ($2.45M), Nuveen LLC ($2.27M), Commodore Capital LP ($2.25M), and Loomis Sayles & Co. L P ($1.90M).

Institutional investors have bought a total of 29,676,487 shares in the last 24 months. This purchase volume represents approximately $891.02M in transactions.

Of the 144 institutional investors that sold Alkermes' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Avoro Capital Advisors LLC ($2.34M), Wellington Management Group LLP ($1.48M), Price T Rowe Associates Inc. MD ($1.24M), Bank of America Corp DE ($1.18M), JPMorgan Chase & Co. ($908.12K), Artisan Partners Limited Partnership ($760.65K), and BNP Paribas Financial Markets ($705.15K).

Institutional investors have sold a total of 18,415,001 shares in the last 24 months. This volume of shares sold represents approximately $553.89M in transactions.


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Institutional ownership data for NASDAQ:ALKS is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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