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Alnylam Pharmaceuticals, Inc.

ALNY
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001178670

No open-market purchases or sales by Alnylam Pharmaceuticals, Inc. insiders were filed in the last 90 days; 794 institutions reported holding it in 13F filings for Q2 2026, worth $40.1B in total; no superinvestor holds it.

13F holders, Q3 2025

Institutional positions in Alnylam Pharmaceuticals, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
823
+178 vs. Q2 2025
Shares held
129.9M
−193.8K (−0.1%) vs. Q2 2025
Total value
$59.2B
+$16.8B (+39.6%) vs. Q2 2025
New holders
225
283 more added
Sold out
47
223 more reduced

8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ALNY on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2025: 823 institutions
Q1 2021: 391 institutionsQ2 2021: 401 institutionsQ3 2021: 407 institutionsQ4 2021: 435 institutionsQ1 2022: 443 institutionsQ2 2022: 424 institutionsQ3 2022: 497 institutionsQ4 2022: 489 institutionsQ1 2023: 478 institutionsQ2 2023: 477 institutionsQ3 2023: 454 institutionsQ4 2023: 501 institutionsQ1 2024: 499 institutionsQ2 2024: 525 institutionsQ3 2024: 569 institutionsQ4 2024: 594 institutionsQ1 2025: 625 institutionsQ2 2025: 653 institutionsQ3 2025: 823 institutionsQ4 2025: 852 institutionsQ1 2026: 793 institutionsQ2 2026: 794 institutions
Value heldQ3 2025: $59.2B
Q1 2021: $15.4BQ2 2021: $19.0BQ3 2021: $21.1BQ4 2021: $19.0BQ1 2022: $18.6BQ2 2022: $16.6BQ3 2022: $26.7BQ4 2022: $28.4BQ1 2023: $24.0BQ2 2023: $22.5BQ3 2023: $20.9BQ4 2023: $22.4BQ1 2024: $17.2BQ2 2024: $29.1BQ3 2024: $34.1BQ4 2024: $30.1BQ1 2025: $34.8BQ2 2025: $43.1BQ3 2025: $59.2BQ4 2025: $52.7BQ1 2026: $43.4BQ2 2026: $40.1B
Institutions holding ALNY and their total value by quarter
QuarterHoldersValue
Q2 2026794$40.1B
Q1 2026793$43.4B
Q4 2025852$52.7B
Q3 2025823$59.2B
Q2 2025653$43.1B
Q1 2025625$34.8B
Q4 2024594$30.1B
Q3 2024569$34.1B
Q2 2024525$29.1B
Q1 2024499$17.2B
Q4 2023501$22.4B
Q3 2023454$20.9B
Q2 2023477$22.5B
Q1 2023478$24.0B
Q4 2022489$28.4B
Q3 2022497$26.7B
Q2 2022424$16.6B
Q1 2022443$18.6B
Q4 2021435$19.0B
Q3 2021407$21.1B
Q2 2021401$19.0B
Q1 2021391$15.4B

Institutions, Q3 2025

Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q2 2025.

Institutions holding ALNY in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
BlueCrest Capital Management Ltd1,231$561.3K0.03%+1,231New
Cigna Investments Inc1,230$561.0K0.08%−15−1.2%Reduced
Crossmark Global Holdings, Inc.1,224$558.1K0.01%+180+17.2%Added
Calamos Advisors LLC1,200$547.2K0.00%+1,200New
Hilltop Holdings Inc.1,189$542.2K0.03%+273+29.8%Added
Perigon Wealth Management, LLC1,183$539.2K0.01%+1,183New
Quantbot Technologies LP1,175$535.8K0.01%+1,175New
Mathes Company, Inc.1,155$527.0K0.19%00.0%Unchanged
TB Alternative Assets Ltd.1,133$516.6K0.08%−126−10.0%Reduced
EverSource Wealth Advisors, LLC1,130$515.3K0.02%+693+158.6%Added
Ground Swell Capital, LLC1,111$506.6K1.11%+1,111New
Aaron Wealth Advisors1,109$505.7K0.03%+1,109New
Coastal Bridge Advisors, LLC1,097$500.2K0.04%+25+2.3%Added
Sivia Capital Partners, LLC1,096$499.8K0.14%+1,096New
NorthRock Partners, LLC1,094$498.9K0.01%+1,094New
Vestmark Advisory Solutions, Inc.1,085$494.8K0.01%−655−37.6%Reduced
Rothschild Investment LLC1,078$491.6K0.03%+1,076+53,800.0%Added
Capital Group Private Client Services, Inc.1,070$487.9K0.01%00.0%Unchanged
Wedmont Private Capital1,055$484.9K0.02%−706−40.1%Reduced
EntryPoint Capital, LLC1,058$482.4K0.19%−492−31.7%Reduced
Smartleaf Asset Management LLC1,077$481.9K0.03%+483+81.3%Added
Asahi Life Asset Management Co., Ltd.1,043$475.6K0.26%−237−18.5%Reduced
Nichols & Pratt Advisers LLP1,043$475.6K0.03%00.0%Unchanged
Breakwater Capital Group1,027$468.3K0.07%00.0%Unchanged
Vise Technologies, Inc.1,024$467.1K0.02%−310−23.2%Reduced
SIH Partners, LLLP1,020$465.1K0.04%+1,020New
Waddell & Associates, LLC1,018$464.2K0.04%+1,018New
Virtue Capital Management, LLC4,121$463.6K0.10%+4,121New
Full Sail Capital, LLC1,015$462.8K0.03%+1,015New
Chicago Partners Investment Group LLC972$462.6K0.01%+972New
Westmount Partners, LLC1,000$460.6K0.12%00.0%Unchanged
Livforsakringsbolaget Skandia, Omsesidigt1,000$455.4K0.02%00.0%Unchanged
Yeomans Consulting Group, Inc.984$453.3K0.16%+984New
Nwam LLC912$448.0K0.02%00.0%Unchanged
National Bank of Canada957$436.4K0.00%+54+6.0%Added
Beacon Pointe Advisors, LLC954$434.9K0.00%−82−7.9%Reduced
Atomi Financial Group, Inc.942$429.7K0.01%+275+41.2%Added
HCR Wealth Advisors924$426.0K0.04%00.0%Unchanged
Jackson Thornton Asset Management, LLC918$413.7K0.04%+918New
Transcend Wealth Collective, LLC899$409.9K0.03%+899New
Evoke Wealth, LLC896$408.6K0.01%+896New
Savant Capital, LLC883$402.6K0.00%+883New
Snowden Capital Advisors LLC867$395.4K0.01%−269−23.7%Reduced
Warren Averett Asset Management, LLC865$394.4K0.00%+865New
Poinciana Advisors Group, LLC857$390.8K0.33%−13−1.5%Reduced
Howard Capital Management Inc.854$389.4K0.01%+24+2.9%Added
SkyOak Wealth, LLC847$386.2K0.07%+847New
CAPROCK Group, Inc.857$382.7K0.01%+857New
XTX Topco Ltd834$380.3K0.02%+834New
Peregrine Capital Management LLC832$379.4K0.01%−315−27.5%Reduced
Meridian Financial, LLC828$377.6K0.21%+28+3.5%Added
Chapin Davis, Inc.825$376.2K0.09%00.0%Unchanged
GAMMA Investing LLC823$375.3K0.02%+97+13.4%Added
West Family Investments, Inc.822$374.8K0.08%00.0%Unchanged
Polymer Capital Management (US) LLC808$368.4K0.05%+808New
Point72 Europe (London) LLP807$367.8K0.02%−19,127−96.0%Reduced
PKO Investment Management Joint-Stock Co800$364.8K0.03%+800New
Parallel Advisors, LLC796$363.3K0.01%−21−2.6%Reduced
Weiss Asset Management LP795$362.5K0.01%+795New
Bridges Investment Management Inc794$362.1K0.00%+794New
Parcion Private Wealth LLC789$359.8K0.02%+789New
Requisite Capital Management, LLC776$353.9K0.06%+776New
Compass Capital Corp800$353.4K0.15%00.0%Unchanged
Ellevest, Inc.774$352.9K0.05%−18−2.3%Reduced
Simplify Asset Management Inc.774$352.9K0.01%+774New
Clearstead Advisors, LLC764$348.4K0.01%−359−32.0%Reduced
Alta Advisers Ltd757$345.2K0.11%00.0%Unchanged
Baader Bank INC760$343.4K0.03%+760New
Portside Wealth Group, LLC751$342.5K0.05%+751New
Draper Asset Management, LLC742$338.4K0.20%+742New
Resources Investment Advisors, LLC.730$332.7K0.00%−387−34.6%Reduced
Farther Finance Advisors, LLC728$331.8K0.01%+349+92.1%Added
Perfromance Wealth Partners, LLC725$330.6K0.01%−10−1.4%Reduced
Essex Financial Services, Inc.714$325.4K0.02%+714New
Savvy Advisors, Inc.710$323.8K0.01%+710New
Kera Capital Partners, Inc.706$321.9K0.05%+706New
HighPoint Advisor Group LLC704$321.0K0.02%+704New
We Are One Seven, LLC700$319.2K0.01%+700New
Ariadne Wealth Management, LP703$319.1K0.14%+197+38.9%Added
Stephens Inc699$318.7K0.00%+64+10.1%Added
Legacy Wealth Asset Management, LLC694$316.5K0.08%+694New
Polen Capital Management LLC693$316.0K0.00%+693New
Independent Advisor Alliance679$309.6K0.01%+679New
Sym Financial Corp675$307.8K0.03%−269−28.5%Reduced
Fiduciary Trust Co673$307.1K0.00%00.0%Unchanged
Dynasty Wealth Management, LLC668$304.6K0.00%+668New
Retireful, LLC662$301.9K0.29%+662New
Lido Advisors, LLC658$300.4K0.00%+658New
Pinebridge Investments, L.P.657$299.6K0.00%+657New
Sowell Financial Services LLC654$298.2K0.01%+38+6.2%Added
Plante Moran Financial Advisors, LLC637$290.5K0.02%−648−50.4%Reduced
Independent Financial Group, LLC632$288.2K0.01%−3−0.5%Reduced
Waterloo Capital, L.P.630$287.3K0.02%+630New
Cascade Financial Partners, LLC627$285.9K0.03%00.0%Unchanged
Moran Wealth Management, LLC625$285.0K0.01%+625New
Ascent Group, LLC624$284.3K0.01%−122−16.4%Reduced
waypoint wealth counsel621$283.2K0.11%+621New
Bradley Foster & Sargent Inc620$282.7K0.00%+620New
L2 Asset Management, LLC611$278.6K0.04%+611New
QTR Family Wealth, LLC609$277.7K0.13%+609New