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Alnylam Pharmaceuticals (ALNY) Institutional Ownership

Alnylam Pharmaceuticals logo
$452.33 -1.85 (-0.41%)
Closing price 08/28/2025 04:00 PM Eastern
Extended Trading
$451.98 -0.35 (-0.08%)
As of 04:04 AM 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 Polygon.io. 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)
413
Total
Institutional Inflows
(last 12 months)
$5.97B
Number of
Institutional Sellers
(last 12 months)
251
Total
Institutional Outflows
(last 12 months)
$5.27B
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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
8/28/2025China Universal Asset Management Co. Ltd.27,817$9.07M0.9%-10.2%0.021%
8/27/2025 Orion Porfolio Solutions LLC4,309$1.41M0.0%+11.7%0.003%
8/20/2025 Kentucky Retirement Systems8,253$2.69M0.1%-6.2%0.006%
8/20/2025 Kentucky Retirement Systems Insurance Trust Fund3,503$1.14M0.1%-6.5%0.003%
8/19/2025 Advisory Services Network LLC6,415$2.09M0.0%-52.5%0.005%
8/19/2025 Liontrust Investment Partners LLP12,769$4.16M0.1%-32.4%0.010%
8/18/2025 Hudson Bay Capital Management LP15,348$5.01M0.0%-138.4%0.012%
8/15/2025 CANADA LIFE ASSURANCE Co91,154$29.73M0.0%+8.7%0.070%
8/15/2025 Corient Private Wealth LLC42,250$13.78M0.0%-1.0%0.032%
8/15/2025 Ewing Morris & Co. Investment Partners Ltd.1,440$470K0.2%N/A0.001%
8/15/2025 E Fund Management Co. Ltd.3,594$1.17M0.1%-71.7%0.003%
8/15/2025 Captrust Financial Advisors3,506$1.14M0.0%-45.1%0.003%
8/15/2025 Soleus Capital Management L.P.106,750$34.81M2.3%N/A0.081%
8/15/2025 Vident Advisory LLC3,925$1.28M0.0%+47.2%0.003%
8/15/2025 Voleon Capital Management LP1,356$442K0.0%-88.6%0.001%
8/15/2025 Tidal Investments LLC5,574$1.82M0.0%-9.0%0.004%
8/15/2025 Smartleaf Asset Management LLC594$192K0.0%-33.6%0.000%
8/15/2025 Snowden Capital Advisors LLC1,136$370K0.0%+37.0%0.001%
8/15/2025 Royal London Asset Management Ltd.259,071$84.48M0.2%-9.7%0.198%
8/15/2025 Rafferty Asset Management LLC32,196$10.50M0.0%-27.8%0.025%
8/15/2025 Oxford Asset Management LLP2,468$805K0.3%N/A0.002%
8/15/2025 Orbis Allan Gray Ltd2,121,412$691.77M3.4%+29.8%1.618%
8/15/2025 Orion Porfolio Solutions LLC4,309$1.41M0.0%+11.7%0.003%
8/15/2025 MML Investors Services LLC17,838$5.82M0.0%+38.0%0.014%
8/15/2025 HRT Financial LP17,887$5.83M0.0%-67.6%0.014%
8/15/2025 Holocene Advisors LP596,816$194.62M0.5%N/A0.455%
8/15/2025 Hudson Bay Capital Management LP15,348$5.01M0.0%-138.4%0.012%
8/15/2025 Humankind Investments LLC896$292K0.1%N/A0.001%
8/15/2025 ICONIQ Capital LLC806$263K0.0%N/A0.001%
8/15/2025 Gilder Gagnon Howe & Co. LLC337,088$109.92M1.2%-2.5%0.257%
8/15/2025 EP Wealth Advisors LLC713$233K0.0%-28.6%0.001%
8/15/2025 Eventide Asset Management LLC125,902$41.05M0.7%-24.4%0.096%
8/15/2025 Engineers Gate Manager LP32,630$10.64M0.1%+28.5%0.025%
8/15/2025 BI Asset Management Fondsmaeglerselskab A S6,912$2.25M0.0%+29.4%0.005%
8/15/2025 Boothbay Fund Management LLC19,213$6.27M0.1%+90.4%0.015%
8/15/2025 Brandywine Managers LLC4,218$1.38M1.4%-3.0%0.003%
8/15/2025 BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp20,471$6.68M0.0%-17.0%0.016%
8/15/2025 Bellevue Group AG676,367$220.56M4.9%-11.9%0.516%
8/15/2025 Adage Capital Partners GP L.L.C.84,390$27.52M0.0%-70.1%0.064%
8/15/2025 AQR Capital Management LLC188,249$61.28M0.1%-77.3%0.144%
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8/14/2025 Orbimed Advisors LLC341,900$111.49M3.0%-1.2%0.261%
8/14/2025 California State Teachers Retirement System199,316$65.00M0.1%+0.9%0.152%
8/14/2025 Worldquant Millennium Advisors LLC117,373$38.27M0.2%-38.6%0.090%
8/14/2025 Canada Pension Plan Investment Board35,520$11.58M0.0%-41.3%0.027%
8/14/2025 Quantinno Capital Management LP13,464$4.39M0.0%+109.3%0.010%
8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.11,558$3.76M0.0%-17.2%0.009%
8/14/2025 Alliancebernstein L.P.67,131$21.89M0.0%+49.7%0.051%
8/14/2025 Ieq Capital LLC6,122$2.00M0.0%-86.1%0.005%
8/14/2025 Treasurer of the State of North Carolina58,304$19.01M0.1%-1.1%0.044%
8/14/2025 Nebula Research & Development LLC900$293K0.0%N/A0.001%
8/14/2025 Frontier Capital Management Co. LLC103,003$33.59M0.3%+0.6%0.079%
8/14/2025 NewEdge Advisors LLC704$229K0.0%+70,300.0%0.001%
8/14/2025 Investment Management Corp of Ontario31,521$10.28M0.1%+35.4%0.024%
8/14/2025 Daiwa Securities Group Inc.12,941$4.22M0.0%+0.3%0.010%
8/14/2025 Prestige Wealth Management Group LLC184$60K0.0%-41.8%0.000%
8/14/2025 Thematics Asset Management6,118$2.00M0.1%N/A0.005%
8/14/2025 Winslow Capital Management LLC1,177,439$383.95M1.3%-0.8%0.898%
8/14/2025 WINTON GROUP Ltd3,533$1.15M0.1%N/A0.003%
8/14/2025 Bank of Nova Scotia2,679$874K0.0%-40.5%0.002%
8/14/2025 California Public Employees Retirement System211,581$68.99M0.0%+5.0%0.161%
8/14/2025 Cerity Partners LLC10,113$3.30M0.0%-30.9%0.008%
8/14/2025 Federated Hermes Inc.323,842$105.60M0.2%+22.6%0.247%
8/13/2025 Jump Financial LLC17,177$5.60M0.1%+9.3%0.013%
8/13/2025 Rosenblum Silverman Sutton S F Inc. CA34,392$11.22M2.7%-0.7%0.026%
8/13/2025 Flow Traders U.S. LLC740$241K0.0%N/A0.001%
8/13/2025 Tema Etfs LLC5,301$1.73M0.5%-18.1%0.004%
8/13/2025 Brown Advisory Inc.29,471$9.61M0.0%-6.1%0.022%
8/13/2025 SCS Capital Management LLC170,662$55.65M0.6%-0.2%0.130%
8/13/2025 Marshall Wace LLP238,573$77.80M0.1%-11.3%0.182%
8/13/2025 Mirabella Financial Services LLP2,970$973K0.1%-74.7%0.002%
8/13/2025 Dodge & Cox3,197,096$1.04B0.6%-4.6%2.439%
8/13/2025 First Trust Advisors LP251,817$82.12M0.1%+39.5%0.192%
8/13/2025 Kennedy Capital Management LLC1,668$544K0.0%+8.2%0.001%
8/13/2025 Guggenheim Capital LLC10,649$3.47M0.0%-13.9%0.008%
8/13/2025 1832 Asset Management L.P.223,345$72.83M0.1%+55.1%0.170%
8/13/2025 Beacon Pointe Advisors LLC1,036$338K0.0%+19.5%0.001%
8/13/2025 Arrowstreet Capital Limited Partnership169,700$55.34M0.0%+4,085.0%0.129%
8/13/2025 M&T Bank Corp8,203$2.67M0.0%+4.3%0.006%
8/13/2025 Panagora Asset Management Inc.92,499$30.16M0.1%-4.4%0.071%
8/13/2025 New York State Common Retirement Fund63,272$20.63M0.0%-1.6%0.048%
8/13/2025 West Family Investments Inc.822$268K0.1%N/A0.001%
8/13/2025 Schroder Investment Management Group8,580$2.80M0.0%-69.1%0.007%
8/13/2025 Mackenzie Financial Corp9,075$2.96M0.0%-4.3%0.007%
8/13/2025 Loomis Sayles & Co. L P487,328$158.91M0.2%-2.2%0.372%
8/13/2025 Skandinaviska Enskilda Banken AB publ 84,888$27.68M0.1%-1.4%0.065%
8/13/2025 Silvant Capital Management LLC19,347$6.31M0.2%+19.5%0.015%
8/13/2025 Norges Bank2,032,680$662.84M0.1%N/A1.551%
8/13/2025 Quadrature Capital Ltd1,887$615K0.0%-89.8%0.001%
8/13/2025 Hsbc Holdings PLC81,748$26.63M0.0%+33.4%0.062%
8/13/2025 Northwestern Mutual Wealth Management Co.496$162K0.0%-5.5%0.000%
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8/13/2025 Groupama Asset Managment1,548,385$504.91M1.9%+0.5%1.181%
8/13/2025 State Board of Administration of Florida Retirement System127,050$41.43M0.1%+1.4%0.097%
8/13/2025 Korea Investment CORP110,855$36.15M0.1%+4.8%0.085%
8/13/2025 Atika Capital Management LLC27,700$9.03M0.9%N/A0.021%
8/13/2025 Elevation Point Wealth Partners LLC113$37K0.0%N/A0.000%
8/13/2025 Employees Retirement System of Texas9,474$3.09M0.0%N/A0.007%
8/13/2025 Choreo LLC4,403$1.44M0.0%+5.3%0.003%
8/13/2025 Himension Capital Singapore PTE. LTD.13,486$4.40M0.3%-11.9%0.010%
8/13/2025 Rhenman & Partners Asset Management AB51,197$16.70M2.1%+6.2%0.039%
8/12/2025 Inceptionr LLC4,576$1.49M0.3%+242.0%0.003%
(Data available from 1/1/2016 forward)

ALNY Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of ALNY shares?

During the previous two years, 603 institutional investors and hedge funds held shares of Alnylam Pharmaceuticals. The most heavily invested institutionals were Vanguard Group Inc. ($4.34B), Capital World Investors ($3.91B), Capital Research Global Investors ($1.64B), T. Rowe Price Investment Management Inc. ($1.19B), Wellington Management Group LLP ($1.14B), Regeneron Pharmaceuticals Inc. ($1.05B), and Dodge & Cox ($1.04B).Learn more on Alnylam Pharmaceuticals' institutional investors.

What percentage of Alnylam Pharmaceuticals' stock is owned by institutional investors?

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

Which institutional investors have been buying Alnylam Pharmaceuticals' stock?

Of the 513 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 ($6.53M), Regeneron Pharmaceuticals Inc. ($4.44M), Capital Research Global Investors ($2.09M), T. Rowe Price Investment Management Inc. ($1.28M), Vanguard Group Inc. ($1.03M), Orbis Allan Gray Ltd ($648.61K), and Holocene Advisors LP ($596.82K).

How much institutional buying is happening at Alnylam Pharmaceuticals?

Institutional investors have bought a total of 22,939,209 shares in the last 24 months. This purchase volume represents approximately $5.97B in transactions.

Which of Alnylam Pharmaceuticals' major shareholders have been selling company stock?

Of the 251 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: New York State Common Retirement Fund ($3.74M), Capital International Investors ($2.55M), Baillie Gifford & Co. ($2.38M), Jefferies Financial Group Inc. ($2.10M), UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC ($1.41M), Bank of Montreal Can ($992.57K), and AQR Capital Management LLC ($640.10K).

How much institutional selling is happening at Alnylam Pharmaceuticals?

Institutional investors have sold a total of 19,027,134 shares in the last 24 months. This volume of shares sold represents approximately $5.27B in transactions.


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This page (NASDAQ:ALNY) was last updated on 8/29/2025 by MarketBeat.com Staff
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