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Alnylam Pharmaceuticals (ALNY) Institutional Ownership

Alnylam Pharmaceuticals logo
$219.72 -11.46 (-4.96%)
Closing price 04:00 PM Eastern
Extended Trading
$220.10 +0.38 (+0.17%)
As of 07:49 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)
570
Total
Institutional Inflows
(last 12 months)
$7.65B
Number of
Institutional Sellers
(last 12 months)
312
Total
Institutional Outflows
(last 12 months)
$88.88B
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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
10/2/2026Versant Capital Management Inc652$161K0.0%+67.2%0.000%
10/1/2026 Burkett Financial Services LLC149$37K0.0%N/A0.000%
9/23/2026QRG Capital Management Inc.2,652$798K0.0%+16.5%0.002%
9/23/2026Envestnet Portfolio Solutions Inc.4,635$1.40M0.0%-2.6%0.003%
9/22/2026Andra AP fonden56,017$16.86M0.2%-35.4%0.042%
9/15/2026Anchor Investment Management LLC3,389$1.02M0.1%+20.2%0.003%
9/9/2026Sequoia Financial Advisors LLC4,347$1.31M0.0%-4.7%0.003%
9/9/2026Tidal Investments LLC33,541$10.10M0.0%-42.1%0.025%
9/9/2026National Pension Service198,295$59.69M0.0%+7.9%0.148%
9/9/2026WINTON GROUP Ltd7,880$2.37M0.1%N/A0.006%
9/9/2026Engineers Gate Manager LP33,469$10.08M0.1%+3.0%0.025%
9/9/2026Integrated Wealth Concepts LLC4,467$1.35M0.0%-16.9%0.003%
9/9/2026NewEdge Advisors LLC2,570$774K0.0%+11.0%0.002%
9/9/2026Beacon Investment Advisory Services Inc.99$30K0.0%-52.9%0.000%
9/8/2026Allworth Financial LP1,099$331K0.0%-14.3%0.001%
9/8/2026Arizona State Retirement System38,025$11.45M0.1%+5.9%0.028%
9/8/2026West Family Investments Inc.767$231K0.1%N/A0.001%
9/8/2026Waverly Advisors LLC823$248K0.0%-9.3%0.001%
9/8/2026Nykredit A S43,641$13.14M0.0%N/A0.033%
8/27/2026Corient Private Wealth LP23,969$7.22M0.0%-6.8%0.018%
8/26/2026HighTower Advisors LLC105,045$31.62M0.0%-0.8%0.079%
8/25/2026VIRGINIA RETIREMENT SYSTEMS ET Al3,980$1.20M0.0%N/A0.003%
8/23/2026Wedmont Private Capital1,413$422K0.0%+15.6%0.001%
8/23/2026HB Wealth Management LLC1,824$549K0.0%-8.6%0.001%
8/23/2026Saudi Central Bank9,284$2.80M0.0%+90.4%0.007%
8/22/2026AlphaGrep UK Ltd1,623$489K0.1%N/A0.001%
8/22/2026Raiffeisen Bank International AG13,510$3.97M0.0%+29.7%0.010%
8/22/2026denkapparat Operations GmbH2,594$781K0.3%+151.4%0.002%
8/22/2026TD Waterhouse Canada Inc.1,825$551K0.0%-7.4%0.001%
8/22/2026Concurrent Investment Advisors LLC7,521$2.26M0.0%+695.9%0.006%
8/22/2026NEOS Investment Management LLC78,274$23.56M0.1%+13.6%0.058%
8/21/2026Orion Capital Management LLC2,155$649K0.2%-24.5%0.002%
8/21/2026Nykredit A S51,208$15.42M0.0%N/A0.038%
8/21/2026B. Metzler seel. Sohn & Co. AG10,591$3.19M0.0%+25.0%0.008%
8/20/2026Proficio Capital Partners LLC919$277K0.0%N/A0.001%
8/20/2026Quantitative Investment Management LLC7,981$2.40M0.3%+106.9%0.006%
8/20/2026Two Sigma Securities LLC5,585$1.68M0.1%N/A0.004%
8/20/2026Benjamin Edwards Inc.1,168$352K0.0%+7.6%0.001%
8/20/2026GTS Securities LLC1,452$437K0.0%+38.0%0.001%
8/20/2026Northwestern Mutual Wealth Management Co.1,151$346K0.0%+25.7%0.001%
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8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC727,848$219.10M0.0%+7.4%0.544%
8/19/2026Royal London Asset Management Ltd.213,589$64.30M0.1%-0.7%0.160%
8/19/2026Van ECK Associates Corp58,666$17.66M0.0%+8.4%0.044%
8/19/2026Nissay Asset Management Corp Japan39,482$11.89M0.1%+7.0%0.030%
8/19/2026Wellington Management Group LLP2,110,407$635.30M0.1%+9.0%1.577%
8/18/2026Beacon Pointe Advisors LLC1,144$344K0.0%N/A0.001%
8/18/2026Livforsakringsbolaget Skandia Omsesidigt1,000$301K0.0%N/A0.001%
8/18/2026Rakuten Investment Management Inc.17,961$5.27M0.0%N/A0.013%
8/18/2026Orion Capital Management LLC2,155$649K0.2%N/A0.002%
8/18/2026North Star Asset Management Inc.1,105$333K0.0%N/A0.001%
8/18/2026Empowered Funds LLC4,355$1.31M0.0%N/A0.003%
8/18/2026United Capital Financial Advisors LLC4,155$1.25M0.0%N/A0.003%
8/18/2026Coastal Bridge Advisors LLC941$283K0.0%N/A0.001%
8/18/2026Jefferies Financial Group Inc.22,095$6.65M0.0%N/A0.017%
8/18/2026Public Employees Retirement System of Ohio37,998$11.44M0.0%N/A0.028%
8/18/2026MASTERINVEST Kapitalanlage GmbH1,251$377K0.0%N/A0.001%
8/17/2026Capstone Investment Advisors LLC1,899$572K0.0%N/A0.001%
8/17/2026Proficio Capital Partners LLC919$277K0.0%N/A0.001%
8/17/2026Transamerica Financial Advisors LLC8,288$2.50M0.2%N/A0.006%
8/17/2026Corient Private Wealth LP23,797$7.16M0.0%N/A0.018%
8/15/2026Strategic Global Advisors LLC4,823$1.45M0.2%N/A0.004%
8/15/2026Caisse de depot et placement du Quebec85,748$25.81M0.0%N/A0.064%
8/15/2026Man Group plc170,907$51.45M0.1%N/A0.128%
8/15/2026Jupiter Topco LLC135,545$40.81M0.0%N/A0.101%
8/14/2026Canada Pension Plan Investment Board334,246$100.62M0.1%N/A0.250%
8/14/2026Parkman Healthcare Partners LLC50,672$15.25M1.6%N/A0.038%
8/14/2026Legal & General Group Plc924,561$278.32M0.1%N/A0.691%
8/14/2026Brandywine Managers LLC2,318$698K0.3%N/A0.002%
8/14/2026L2 Asset Management LLC768$231K0.0%N/A0.001%
8/13/2026Cibc World Market Inc.7,221$2.17M0.0%N/A0.005%
8/13/2026OMERS ADMINISTRATION Corp4,517$1.36M0.0%N/A0.003%
8/13/2026Osmosis Investment Management UK Ltd3,638$1.10M0.1%N/A0.003%
8/13/2026Sanctuary Advisors LLC3,139$945K0.0%N/A0.002%
8/13/2026Polymer Capital Management HK LTD64,957$19.55M1.0%N/A0.049%
8/13/2026Connor Clark & Lunn Investment Management Ltd.666$200K0.0%N/A0.000%
8/13/2026Meiji Yasuda Asset Management Co Ltd.1,085$327K0.0%N/A0.001%
8/13/2026Bank of Nova Scotia8,130$2.45M0.0%N/A0.006%
8/12/2026Elevation Point Wealth Partners LLC1,316$396K0.0%N/A0.001%
8/12/2026Daiichi Life Insurance Co. Ltd.5,873$1.77M0.0%N/A0.004%
8/12/2026Commerce Bank9,461$2.85M0.0%N/A0.007%
8/12/2026Northwestern Mutual Wealth Management Co.1,151$346K0.0%N/A0.001%
8/12/2026Evolve Private Wealth LLC882$266K0.0%N/A0.001%
8/12/2026Westpac Banking Corp2,632$792K0.0%N/A0.002%
8/12/2026Sumitomo Life Insurance Co.3,111$937K0.0%N/A0.002%
8/12/2026Korea Investment CORP247,660$74.55M0.1%N/A0.185%
8/12/2026EP Wealth Advisors LLC791$238K0.0%N/A0.001%
8/12/2026Ieq Capital LLC15,410$4.64M0.0%N/A0.012%
8/12/2026Callan Family Office LLC3,078$927K0.0%N/A0.002%
8/11/2026Keating Financial Advisory Services Inc.139$42K0.0%N/A0.000%
8/11/2026Allworth Financial LP1,099$331K0.0%N/A0.001%
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8/11/2026B. Metzler seel. Sohn & Co. AG10,591$3.19M0.0%N/A0.008%
8/11/2026Silvant Capital Management LLC18,126$5.46M0.2%N/A0.014%
8/11/2026Vise Technologies Inc.1,242$374K0.0%N/A0.001%
8/11/2026E Fund Management Co. Ltd.6,073$1.83M0.0%N/A0.005%
8/11/2026Asahi Life Asset Management CO. LTD.1,388$418K0.2%N/A0.001%
8/10/2026Shepherd Financial Partners LLC2,741$825K0.1%N/A0.002%
8/10/2026West Family Investments Inc.767$231K0.1%N/A0.001%
8/10/2026NewEdge Wealth LLC9,094$2.74M0.0%N/A0.007%
8/10/2026Danske Bank A S64,555$19.43M0.0%N/A0.048%
8/8/2026Wealthfront Advisers LLC9,554$2.88M0.0%N/A0.007%


ALNY Institutional Ownership - Frequently Asked Questions

During the previous two years, 834 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 754 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 ($1.05M).

Institutional investors have bought a total of 18,929,806 shares in the last 24 months. This purchase volume represents approximately $7.65B in transactions.

Of the 312 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 197,398,760 shares in the last 24 months. This volume of shares sold represents approximately $88.88B in transactions.


Related Companies

Institutional ownership data for NASDAQ:ALNY is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 10/2/2026. New 13F filings are added each quarter as they're published.
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