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Alkermes (ALKS) Institutional Ownership

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$49.40 +0.23 (+0.47%)
As of 04:00 PM Eastern
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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)
231
Total
Institutional Inflows
(last 12 months)
$1.11B
Number of
Institutional Sellers
(last 12 months)
154
Total
Institutional Outflows
(last 12 months)
$603.71M
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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
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%
6/18/2026Pacer Advisors Inc.688,563$24.35M0.0%+2.0%0.413%
6/16/2026Empowered Funds LLC7,817$276K0.0%-87.2%0.005%
6/4/2026Seven Fleet Capital Management LP24,170$855K0.3%N/A0.015%
5/26/2026Glenmede Trust Co. NA378,090$13.37M0.1%-8.4%0.227%
5/22/2026Segall Bryant & Hamill LLC585,769$20.71M0.3%-4.8%0.351%
5/19/2026Bank of America Corp DE1,210,851$42.82M0.0%-9.2%0.726%
5/19/2026Stempoint Capital LP80,492$2.85M0.5%N/A0.048%
5/19/2026Edgestream 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%
5/18/2026ADAR1 Capital Management LLC46,400$1.64M0.1%-27.2%0.028%
5/18/2026Amundi64,710$2.29M0.0%+99.8%0.039%
5/18/2026 EverSource Wealth Advisors LLC3,278$116K0.0%+33.5%0.002%
5/18/2026California State Teachers Retirement System183,795$6.50M0.0%+23.5%0.110%
5/18/2026Royal Bank of Canada304,337$10.76M0.0%-6.5%0.183%
5/18/2026Rock Springs Capital Management LP183,986$6.51M0.4%+32.1%0.110%
5/18/2026Eagle Health Investments LP238,673$8.44M1.5%+191.8%0.143%
5/18/2026Empowered Funds LLC7,817$276K0.0%-87.2%0.005%
5/18/2026Exome Asset Management LLC84,103$2.97M1.5%N/A0.050%
5/16/2026The Manufacturers Life Insurance Company71,415$2.53M0.0%-37.2%0.043%
5/16/2026Quantinno Capital Management LP44,932$1.59M0.0%+131.1%0.027%
5/16/2026SummitTX Capital L.P.156,259$5.53M0.2%N/A0.094%
5/16/2026ABS Direct Equity Fund LLC4,900$167K0.1%N/A0.003%
5/15/2026Commodore Capital LP4,200,000$148.51M8.6%+18.3%2.520%
5/15/2026OMERS 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%
5/15/2026Lombard Odier Asset Management USA Corp10,232$362K0.0%N/A0.006%
5/15/2026Affinity Asset Advisors LLC1,350,000$47.74M2.5%+35.0%0.810%
5/15/2026Entropy Technologies LP22,885$809K0.0%-64.1%0.014%
5/15/2026Spruce Street Capital LP317,992$11.24M2.7%N/A0.191%
5/14/2026Renaissance 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%
5/14/2026Public Employees Retirement System of Ohio4,929$174K0.0%+413.4%0.003%
5/14/2026Knott David M Jr120,000$4.24M2.5%+26.3%0.072%
5/14/2026Sei Investments Co.153,817$5.44M0.0%-19.3%0.092%
5/14/2026 State of Wyoming14,676$519K0.1%-15.4%0.009%
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5/13/2026Cetera Investment Advisers14,758$522K0.0%-22.0%0.009%
5/13/2026Militia Capital Management LLC31,918$1.13M0.2%N/A0.019%
5/13/2026First 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%
5/8/2026DUTCH ASSET Corp6,200$219K0.1%N/A0.004%
5/8/2026 Summit Global Investments11,691$413K0.0%-60.6%0.007%
5/7/2026Dimensional 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%
5/7/2026Swiss National Bank310,300$10.97M0.0%+0.4%0.187%
5/6/2026California 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%
5/6/2026AXS Investments LLC18,850$667K0.3%-3.3%0.011%
5/6/2026Bessemer Group Inc.158,397$5.60M0.0%+0.5%0.095%
5/6/2026Allspring 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%
5/5/2026Illinois Municipal Retirement Fund90,989$3.22M0.0%-0.5%0.055%
5/5/2026Sanctuary 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%
5/4/2026Teachers 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%
4/30/2026Hsbc 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%
4/28/2026AdvisorShares 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%
4/20/2026Ritholtz Wealth Management45,844$1.62M0.0%-28.5%0.028%
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%
4/16/2026Evolve Private Wealth LLC20,401$721K0.0%+3.3%0.012%
4/16/2026 Diversified Trust Co54,913$1.94M0.0%+11.9%0.033%
3/20/2026Hsbc Holdings PLC42,817$1.20M0.0%+20.4%0.026%
3/17/2026Rockefeller Capital Management L.P.1,411$39K0.0%-34.6%0.001%
3/16/2026Avoro Capital Advisors LLC1,400,000$39.17M0.4%-37.5%0.840%
3/9/2026Corient Private Wealth LLC21,932$612K0.0%-47.0%0.013%
3/9/2026 EMC Capital Management2,064$58K0.0%-15.0%0.001%
3/6/2026Hsbc Holdings PLC42,817$1.20M0.0%+20.4%0.026%
2/24/2026Pacer Advisors Inc.674,874$18.88M0.0%-16.5%0.409%
2/19/2026T. Rowe Price Investment Management Inc.2,099$59K0.0%N/A0.001%
2/19/2026Invesco Ltd.538,716$15.07M0.0%-7.8%0.326%
2/19/2026Corient Private Wealth LLC21,932$612K0.0%-47.0%0.013%
2/18/2026Mercer Global Advisors Inc. ADV9,138$256K0.0%N/A0.006%
2/18/2026 Summit Global Investments29,662$830K0.0%+48.8%0.018%
2/18/2026Vident Advisory LLC82,294$2.30M0.0%+1.1%0.050%
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2/18/2026State of Tennessee Department of Treasury66,414$1.86M0.0%-10.0%0.040%
2/18/2026Krensavage Asset Management LLC107,822$3.02M1.1%-48.1%0.065%
2/18/2026Mackenzie Financial Corp95,447$2.65M0.0%-78.4%0.058%
2/18/2026Empowered Funds LLC61,198$1.71M0.0%N/A0.037%
2/18/2026XTX Topco Ltd12,322$345K0.0%-72.4%0.007%
2/18/2026Zacks Investment Management84,361$2.36M0.0%N/A0.051%
2/18/2026Voloridge Investment Management LLC273,158$7.64M0.0%+3.3%0.165%
2/18/2026Tudor Investment Corp ET AL82,720$2.32M0.0%+46.7%0.050%
2/18/2026Oxford Asset Management LLP26,767$749K0.3%N/A0.016%
2/18/2026Opaleye Management Inc.490,000$13.71M1.8%+8.9%0.297%


ALKS Institutional Ownership - Frequently Asked Questions

During the previous two years, 384 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 337 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 Armistice Capital LLC ($2.03M).

Institutional investors have bought a total of 37,554,801 shares in the last 24 months. This purchase volume represents approximately $1.11B in transactions.

Of the 154 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 ($1.32M), JPMorgan Chase & Co. ($1.31M), Price T Rowe Associates Inc. MD ($1.24M), Bank of America Corp DE ($1.18M), Artisan Partners Limited Partnership ($855.11K), and BNP Paribas Financial Markets ($705.15K).

Institutional investors have sold a total of 20,429,794 shares in the last 24 months. This volume of shares sold represents approximately $603.71M 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 8/6/2026. New 13F filings are added each quarter as they're published.
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