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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, Q1 2025

Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 31, 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
625
+39 vs. Q4 2024
Shares held
129.4M
+2.10M (+1.7%) vs. Q4 2024
Total value
$34.8B
+$4.88B (+16.3%) vs. Q4 2024
New holders
106
235 more added
Sold out
67
205 more reduced

8 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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 holdersQ1 2025: 625 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 heldQ1 2025: $34.8B
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, Q1 2025

Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2024.

Institutions holding ALNY in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Itau Unibanco Holding S.A.170$46.0K0.00%−1−0.6%Reduced
Washington Trust Advisors, Inc.175$47.2K0.00%+61+53.5%Added
Huntington National Bank198$53.5K0.00%+125+171.2%Added
Larson Financial Group LLC199$53.7K0.00%+87+77.7%Added
Anchor Investment Management, LLC200$54.0K0.01%00.0%Unchanged
Concord Wealth Partners200$54.0K0.01%00.0%Unchanged
Spire Wealth Management204$55.1K0.00%−1−0.5%Reduced
Geneos Wealth Management Inc.222$59.9K0.00%+175+372.3%Added
Farther Finance Advisors, LLC241$61.6K0.00%00.0%Unchanged
IFP Advisors, Inc232$62.6K0.00%−9−3.7%Reduced
Evelyn Partners Investment Management LLP250$67.5K0.00%00.0%Unchanged
Ofi Invest Asset Management302$75.5K0.00%+147+94.8%Added
True Wealth Design, LLC299$80.8K0.03%+147+96.7%Added
Bayforest Capital Ltd306$82.6K0.04%+39+14.6%Added
Prestige Wealth Management Group LLC316$85.3K0.02%00.0%Unchanged
Edmond de Rothschild Holding S.A.318$85.9K0.00%+49+18.2%Added
Versant Capital Management, Inc336$90.7K0.02%+146+76.8%Added
V-Square Quantitative Management LLC371$100.2K0.01%+1+0.3%Added
Skopos Labs, Inc.403$108.8K0.02%−14−3.4%Reduced
Ostrum Asset Management406$109.6K0.01%−11−2.6%Reduced
Covestor Ltd415$112.0K0.07%−43−9.4%Reduced
Jones Financial Companies LLLP419$112.5K0.00%+153+57.5%Added
MAI Capital Management447$120.7K0.00%+3+0.7%Added
EverSource Wealth Advisors, LLC455$122.9K0.01%+39+9.4%Added
Fortitude Family Office, LLC500$135.0K0.05%+500New
Fourth Dimension Wealth, LLC504$136.1K0.07%+504New
Northwestern Mutual Wealth Management Co525$141.8K0.00%+49+10.3%Added
Quadrant Capital Group LLC548$148.0K0.01%+302+122.8%Added
Allworth Financial LP618$149.9K0.00%+21+3.5%Added
Lindbrook Capital, LLC596$160.9K0.01%+50+9.2%Added
GAMMA Investing LLC616$166.3K0.01%+77+14.3%Added
Caitong International Asset Management Co., Ltd618$166.9K0.12%+602+3,762.5%Added
Zions Bancorporation, National Association646$174.4K0.01%+646New
National Bank of Canada663$179.0K0.00%−5−0.7%Reduced
Parcion Private Wealth LLC748$202.0K0.02%+748New
Ascent Group, LLC749$202.2K0.01%+749New
Strategic Financial Concepts, LLC752$203.1K0.04%+752New
Alta Advisers Ltd757$204.4K0.09%+757New
HB Wealth Management, LLC771$208.3K0.00%+771New
Ellevest, Inc.773$208.7K0.01%−651−45.7%Reduced
Essex LLC788$212.8K0.05%+788New
Cambridge Investment Research Advisors, Inc.789$213.0K0.00%+789New
Compass Capital Corp800$215.0K0.11%00.0%Unchanged
Meridian Financial, LLC800$216.0K0.15%−100−11.1%Reduced
Proficio Capital Partners LLC808$218.2K0.02%+808New
Chapin Davis, Inc.825$222.8K0.08%00.0%Unchanged
Wiley Bros.-Aintree Capital, LLC828$222.9K0.00%+828New
Snowden Capital Advisors LLC829$223.8K0.01%+829New
Poinciana Advisors Group, LLC851$229.8K0.24%−10−1.2%Reduced
Parallel Advisors, LLC862$232.7K0.01%+31+3.7%Added
Envestnet Portfolio Solutions, Inc.867$234.1K0.00%−1,195−58.0%Reduced
Beacon Pointe Advisors, LLC867$234.1K0.00%−68−7.3%Reduced
Smartleaf Asset Management LLC895$240.3K0.02%+148+19.8%Added
Independent Financial Group, LLC890$240.3K0.01%−15−1.7%Reduced
Nwam LLC907$244.9K0.02%+1+0.1%Added
Fukoku Mutual Life Insurance Co914$246.8K0.02%00.0%Unchanged
HCR Wealth Advisors924$249.5K0.03%00.0%Unchanged
Dai-Ichi Life Insurance Company, Ltd955$257.9K0.01%00.0%Unchanged
Kestra Advisory Services, LLC958$258.7K0.00%−629−39.6%Reduced
Polymer Capital Management (US) LLC961$259.5K0.08%+961New
Meeder Advisory Services, Inc.978$264.1K0.02%+72+7.9%Added
Sara-Bay Financial1,000$268.5K0.12%+15+1.5%Added
EP Wealth Advisors, LLC998$269.4K0.00%+998New
Livforsakringsbolaget Skandia, Omsesidigt1,000$269.9K0.02%00.0%Unchanged
Greenland Capital Management LP1,000$270.0K0.05%−1,000−50.0%Reduced
Westmount Partners, LLC1,000$270.0K0.08%00.0%Unchanged
Sym Financial Corp1,014$273.8K0.03%+51+5.3%Added
Callan Family Office, LLC1,018$274.9K0.02%−24−2.3%Reduced
Crossmark Global Holdings, Inc.1,018$274.9K0.00%+1,018New
Eqis Capital Management, Inc.1,028$277.6K0.02%−141−12.1%Reduced
Breakwater Capital Group1,029$277.9K0.05%00.0%Unchanged
Principal Securities, Inc.1,187$279.3K0.01%00.0%Unchanged
Nichols & Pratt Advisers LLP1,043$281.6K0.02%−332−24.1%Reduced
Altfest L J & Co Inc1,050$283.5K0.04%+1,050New
TownSquare Capital, LLC1,059$285.9K0.00%+93+9.6%Added
Steward Partners Investment Advisory, LLC1,062$286.8K0.00%+122+13.0%Added
Coldstream Capital Management Inc1,079$291.3K0.01%−34−3.1%Reduced
Bryn Mawr Trust Co1,098$296.5K0.01%+1,089+12,100.0%Added
Peregrine Capital Management LLC1,147$309.7K0.01%00.0%Unchanged
Algert Global LLC1,150$310.5K0.01%+1,150New
Ronald Blue Trust, Inc.1,158$312.7K0.00%+293+33.9%Added
Two Sigma Securities, LLC1,159$313.0K0.05%+42+3.8%Added
Towarzystwo Funduszy Inwestycyjnych Pzu SA1,162$313.8K0.11%+160+16.0%Added
Marex Group plc1,173$316.7K0.01%−95−7.5%Reduced
Qsemble Capital Management, LP1,196$322.9K0.03%+1,196New
NorthCrest Asset Manangement, LLC1,196$323.0K0.01%+1,196New
Brighton Jones LLC1,209$326.5K0.01%+177+17.2%Added
Resources Investment Advisors, LLC.1,211$327.0K0.00%+165+15.8%Added
Penserra Capital Management LLC1,220$329.0K0.01%+1,208+10,066.7%Added
Crowley Wealth Management, Inc.1,250$337.5K0.32%00.0%Unchanged
Plante Moran Financial Advisors, LLC1,285$347.0K0.03%+650+102.4%Added
Cigna Investments Inc1,297$351.0K0.07%00.0%Unchanged
Kaufman Rossin Wealth, LLC1,300$351.0K0.25%+1,300New
Clearstead Advisors, LLC1,304$352.1K0.01%+194+17.5%Added
North Star Asset Management Inc1,305$352.4K0.02%−5−0.4%Reduced
Abn Amro Investment Solutions1,310$353.7K0.01%+99+8.2%Added
Ossiam1,336$360.7K0.01%−1,091−45.0%Reduced
Inceptionr LLC1,338$361.3K0.11%+1,338New
Ontario Teachers Pension Plan Board1,345$363.2K0.01%−202−13.1%Reduced
Allegiance Financial Group Advisory Services LLC1,353$365.3K0.11%+384+39.6%Added