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Alnylam Pharmaceuticals (ALNY) Institutional Ownership

Alnylam Pharmaceuticals logo
$292.58 +6.46 (+2.26%)
Closing price 04:00 PM Eastern
Extended Trading
$301.50 +8.92 (+3.05%)
As of 07:58 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 Alnylam Pharmaceuticals (NASDAQ:ALNY)

Current
Institutional Ownership
Percentage
92.97%
Number of
Institutional Buyers
(last 12 months)
596
Total
Institutional Inflows
(last 12 months)
$8.11B
Number of
Institutional Sellers
(last 12 months)
355
Total
Institutional Outflows
(last 12 months)
$90.52B
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ALNY Institutional Buying and Selling by Quarter

Alnylam Pharmaceuticals Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
6/3/2026 Parallel Advisors LLC891$295K0.0%+7.9%0.001%
6/3/2026 NewEdge Advisors LLC2,316$766K0.0%-82.2%0.002%
5/26/2026 Glenmede Trust Co. NA731$242K0.0%+8.3%0.001%
5/22/2026 Groupama Asset Managment36,767$12.17M0.2%+2.5%0.028%
5/22/2026 Segall Bryant & Hamill LLC2,000$641K0.0%N/A0.001%
5/21/2026 Essential Partners LLC100$33K0.0%-77.5%0.000%
5/20/2026 Liontrust Investment Partners LLP18,218$6.03M0.1%-0.9%0.014%
5/19/2026 Edgestream Partners L.P.5,810$1.92M0.1%-19.8%0.004%
5/19/2026 Janus Henderson Group PLC147,089$48.66M0.0%+7.8%0.110%
5/19/2026 Oddo BHF Asset Management Sas33,013$10.92M0.4%+9.6%0.025%
5/19/2026 Bull Harbor Capital LLC634$210K0.1%N/A0.000%
5/18/2026 EverSource Wealth Advisors LLC640$212K0.0%-39.7%0.000%
5/18/2026 California State Teachers Retirement System196,863$65.14M0.1%-2.5%0.147%
5/18/2026 Rock Springs Capital Management LP74,000$24.48M1.4%+3.9%0.055%
5/18/2026 Empowered Funds LLC5,410$1.79M0.0%-72.2%0.004%
5/16/2026 Quantinno Capital Management LP33,850$11.20M0.0%+32.3%0.025%
5/16/2026 SummitTX Capital L.P.3,611$1.20M0.0%+4.2%0.003%
5/16/2026 Lazard Asset Management LLC16,280$5.39M0.0%+60.4%0.012%
5/16/2026 Orbimed Advisors LLC119,000$39.37M0.7%-58.8%0.089%
5/15/2026 Quadcap Wealth Management LLC707$234K0.0%N/A0.001%
5/15/2026 Bradley Foster & Sargent Inc. CT1,203$398K0.0%+71.6%0.001%
5/15/2026 Lombard Odier Asset Management Switzerland SA3,320$1.10M0.0%N/A0.002%
5/15/2026 Waverly Advisors LLC907$300K0.0%+8.0%0.001%
5/15/2026 Wealth Alliance LLC1,016$336K0.0%N/A0.001%
5/15/2026 Entropy Technologies LP35,719$11.82M0.5%+121.9%0.027%
5/14/2026 Healthcare of Ontario Pension Plan Trust Fund34,781$11.51M0.0%-14.0%0.026%
5/14/2026 Dai ichi Life Insurance Company Ltd5,930$1.96M0.1%-5.2%0.004%
5/14/2026 Public Employees Retirement System of Ohio44,022$14.57M0.0%-1.1%0.033%
5/14/2026 Modern Wealth Management LLC696$229K0.0%N/A0.001%
5/14/2026 Capula Management Ltd13,115$4.34M0.0%-0.5%0.010%
5/14/2026 Bank of Nova Scotia7,798$2.58M0.0%+0.6%0.006%
5/14/2026 Lido Advisors LLC1,180$390K0.0%+64.6%0.001%
5/13/2026 Cetera Investment Advisers23,173$7.67M0.0%+32.0%0.017%
5/13/2026 Prestige Wealth Management Group LLC226$75K0.0%+30.6%0.000%
5/13/2026 NewEdge Wealth LLC9,201$3.04M0.0%+22.2%0.007%
5/13/2026 CI Investments Inc.3,611$1.20M0.0%-40.3%0.003%
5/13/2026 First Trust Advisors LP382,701$126.62M0.1%+48.9%0.287%
5/12/2026 Westpac Banking Corp2,452$811K0.1%-53.8%0.002%
5/12/2026 Himension Capital Singapore PTE. LTD.13,169$4.36M0.3%+29.3%0.010%
5/8/2026 PNC Financial Services Group Inc.12,322$4.08M0.0%-2.8%0.009%
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5/8/2026 Andra AP fonden86,697$28.69M0.4%+78.6%0.065%
5/7/2026 Dimensional Fund Advisors LP384,205$127.07M0.0%+27.3%0.288%
5/7/2026 Parallel Advisors LLC891$295K0.0%+7.9%0.001%
5/7/2026 AlphaCentric Advisors LLC1,370$453K0.5%+5.8%0.001%
5/7/2026 KBC Group NV20,524$6.79M0.0%-94.1%0.015%
5/7/2026 S&CO Inc.7,400$2.45M0.2%-9.8%0.006%
5/7/2026 SEB Asset Management AB30,153$9.98M0.0%N/A0.023%
5/7/2026 Swiss National Bank387,720$128.29M0.1%+7.9%0.290%
5/7/2026 AIA Group Ltd7,742$2.56M0.0%-61.6%0.006%
5/7/2026 Mediolanum International Funds Ltd45,119$14.26M0.2%+6.2%0.034%
5/6/2026 California Public Employees Retirement System227,997$75.44M0.0%-3.8%0.171%
5/6/2026 Assetmark Inc.14,207$4.70M0.0%-11.4%0.011%
5/6/2026 Bessemer Group Inc.122$40K0.0%-46.3%0.000%
5/6/2026 Allspring Global Investments Holdings LLC281,793$92.63M0.2%+1.1%0.211%
5/6/2026 Independent Financial Group LLC630$208K0.0%N/A0.000%
5/6/2026 Aware Super Pty Ltd as trustee of Aware Super5,473$1.81M0.0%N/A0.004%
5/5/2026 Wealthfront Advisers LLC11,587$3.83M0.0%-36.5%0.009%
5/5/2026 Marks Group Wealth Management Inc1,650$546K0.1%N/A0.001%
5/5/2026 Illinois Municipal Retirement Fund24,295$8.04M0.1%-5.7%0.018%
5/5/2026 MASTERINVEST Kapitalanlage GmbH1,179$390K0.0%N/A0.001%
5/5/2026 Sanctuary Advisors LLC5,839$1.93M0.0%-10.4%0.004%
5/4/2026 Principal Financial Group Inc.5,649$1.87M0.0%+61.5%0.004%
5/4/2026 J. Safra Sarasin Holding AG3,230$1.07M0.0%-64.7%0.002%
5/4/2026 Teachers Retirement System of The State of Kentucky30,696$10.16M0.1%-2.9%0.023%
5/2/2026 Anchor Investment Management LLC2,819$933K0.1%+4.6%0.002%
5/1/2026 Fifth Third Bancorp9,568$3.17M0.0%+7,433.9%0.007%
5/1/2026 Sequoia Financial Advisors LLC4,560$1.51M0.0%+8.3%0.003%
4/30/2026 First Horizon Corp113$37K0.0%-30.7%0.000%
4/30/2026 Kestra Advisory Services LLC1,184$392K0.0%-36.0%0.001%
4/30/2026 Sumitomo Mitsui Trust Group Inc.314,417$104.03M0.1%-4.1%0.236%
4/30/2026 Resona Asset Management Co. Ltd.39,832$13.09M0.1%+1.5%0.030%
4/30/2026 Capstone Capital Management Ltd1,767$585K0.6%-23.2%0.001%
4/29/2026 Burney Co.3,411$1.13M0.0%-25.6%0.003%
4/29/2026 Swedbank AB62,215$20.59M0.0%+0.4%0.047%
4/28/2026 Whittier Trust Co. of Nevada Inc.219$72K0.0%+167.1%0.000%
4/28/2026 Ascentis Independent Advisors194$64K0.0%N/A0.000%
4/28/2026 Kepler Cheuvreux Suisse SA1,713$567K0.0%N/A0.001%
4/28/2026 QRG Capital Management Inc.2,277$754K0.0%-3.6%0.002%
4/27/2026 HB Wealth Management LLC1,995$660K0.0%+17.3%0.001%
4/27/2026 Sierra Summit Advisors LLC30,298$10.03M1.5%N/A0.023%
4/27/2026 Y Intercept Hong Kong Ltd11,361$3.76M0.1%N/A0.009%
4/27/2026 Bronte Capital Management Pty Ltd.37,245$12.32M1.3%-4.2%0.028%
4/27/2026 Leonteq Securities AG248$82K0.0%+136.2%0.000%
4/27/2026 Fjarde AP Fonden Fourth Swedish National Pension Fund48,705$16.12M0.1%+61.2%0.037%
4/27/2026 Elevation Point Wealth Partners LLC1,263$418K0.0%N/A0.001%
4/27/2026 Fideuram Intesa Sanpaolo Private Banking S.P.A.37,025$12.25M0.4%+80.8%0.028%
4/25/2026 Strs Ohio35,532$11.76M0.0%+26.7%0.027%
4/25/2026 Keybank National Association OH3,239$1.07M0.0%-2.9%0.002%
4/24/2026 Fulton Bank N.A.1,549$513K0.0%+8.3%0.001%
4/24/2026 USS Investment Management Ltd26,848$8.88M0.0%+2.4%0.020%
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4/24/2026 IFM Investors Pty Ltd27,266$9.02M0.1%+3.9%0.020%
4/24/2026 iA Global Asset Management Inc.15,922$5.27M0.1%-10.4%0.012%
4/23/2026 Lansforsakringar Fondforvaltning AB publ 41,890$13.86M0.1%-1.1%0.031%
4/23/2026 Apollon Wealth Management LLC767$254K0.0%N/A0.001%
4/22/2026 Janney Montgomery Scott LLC9,339$3.09M0.0%+43.6%0.007%
4/22/2026 Pictet Asset Management Holding SA237,920$77.49M0.1%-24.7%0.178%
4/22/2026 Sterling Capital Management LLC5,182$1.72M0.0%+45.7%0.004%
4/21/2026 Cannon Global Investment Management LLC2,400$794K1.6%N/A0.002%
4/21/2026 Draper Asset Management LLC3,773$1.25M0.7%+55.8%0.003%
4/21/2026 Aaron Wealth Advisors LLC729$241K0.0%-21.8%0.001%


ALNY Institutional Ownership - Frequently Asked Questions

During the previous two years, 835 institutional investors and hedge funds held shares of Alnylam Pharmaceuticals. The most heavily invested institutionals were Capital World Investors ($6.48B), Vanguard Group Inc. ($5.39B), Capital Research Global Investors ($2.70B), Geode Capital Management LLC ($1.06B), Baillie Gifford & Co. ($1.03B), Norges Bank ($895.82M), and Dodge & Cox ($781.15M).Learn more on Alnylam Pharmaceuticals' institutional investors.

92.97% of Alnylam Pharmaceuticals' stock is owned by institutional investors. Learn more on ALNY's institutional investor holdings.

Of the 752 institutional investors that purchased Alnylam Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Norges Bank ($6.74M), Regeneron Pharmaceuticals Inc. ($4.44M), Groupama Asset Managment ($2.51M), Capital Research Global Investors ($1.76M), Arrowstreet Capital Limited Partnership ($1.35M), T. Rowe Price Investment Management Inc. ($1.28M), and AQR Capital Management LLC ($1.18M).

Institutional investors have bought a total of 20,078,898 shares in the last 24 months. This purchase volume represents approximately $8.11B in transactions.

Of the 355 institutional investors that sold Alnylam Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Deerfield Management Company L.P. ($110.08M), Invesco Ltd. ($45.50M), Ameriprise Financial Inc. ($4.47M), Groupama Asset Managment ($4.00M), Amundi ($3.21M), Regeneron Pharmaceuticals Inc. ($3.05M), and Man Group plc ($2.85M).

Institutional investors have sold a total of 202,448,101 shares in the last 24 months. This volume of shares sold represents approximately $90.52B in transactions.


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This page (NASDAQ:ALNY) was last updated on 6/3/2026 by MarketBeat.com Staff.
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