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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
Hartford Financial Management Inc.100$45.6K0.01%00.0%Unchanged
Westside Investment Management, Inc.96$44.2K0.01%+48+100.0%Added
Hilltop National Bank91$41.5K0.01%+91New
Hemington Wealth Management88$40.0K0.01%+1+1.1%Added
Newbridge Financial Services Group, Inc.85$38.9K0.01%+85New
Quent Capital, LLC85$38.8K0.00%+85New
ORG Partners LLC80$36.5K0.01%+33+70.2%Added
Aster Capital Management (DIFC) Ltd78$35.6K0.02%+78New
Transamerica Financial Advisors, Inc.77$35.1K0.00%+77New
TFC Financial Management74$33.7K0.00%00.0%Unchanged
Sachetta, LLC73$33.3K0.01%00.0%Unchanged
Ameriflex Group, Inc.70$31.9K0.01%+70New
Whittier Trust Co69$31.5K0.00%00.0%Unchanged
MV Capital Management, Inc.64$29.2K0.00%+1+1.6%Added
SBI Securities Co., Ltd.63$28.7K0.00%00.0%Unchanged
Caitong International Asset Management Co., Ltd63$28.7K0.02%+63New
Private Wealth Management Group, LLC62$28.3K0.01%00.0%Unchanged
CVA Family Office, LLC62$28.3K0.00%+1+1.6%Added
Salomon & Ludwin, LLC60$27.4K0.00%+60New
Global Trust Asset Management, LLC60$27.4K0.01%00.0%Unchanged
Truvestments Capital LLC57$26.1K0.00%00.0%Unchanged
Fifth Third Bancorp57$26.0K0.00%−19−25.0%Reduced
Root Financial Partners, LLC54$24.6K0.00%+54New
St. Johns Investment Management Company, LLC50$22.8K0.01%00.0%Unchanged
Peoples Financial Services Corp.50$22.8K0.01%00.0%Unchanged
Piscataqua Savings Bank50$22.8K0.02%00.0%Unchanged
JPL Wealth Management, LLC46$21.0K0.00%+46New
Private Wealth Asset Management, LLC42$19.2K0.00%00.0%Unchanged
Aventura Private Wealth, LLC40$18.2K0.01%00.0%Unchanged
Millstone Evans Group, LLC40$18.2K0.01%+40New
Colonial Trust Co38$17.3K0.00%+38New
Golden State Wealth Management, LLC36$16.4K0.00%00.0%Unchanged
Bell Investment Advisors, Inc36$16.4K0.00%+1+2.9%Added
SOA Wealth Advisors, LLC.36$16.4K0.00%+36New
Avion Wealth37$16.0K0.00%−1−2.6%Reduced
JFS Wealth Advisors, LLC35$16.0K0.00%00.0%Unchanged
Bogart Wealth, LLC35$16.0K0.00%00.0%Unchanged
Painted Porch Advisors LLC32$14.6K0.01%+32New
WPG Advisers, LLC31$14.1K0.01%−11−26.2%Reduced
Palisade Asset Management, LLC31$14.1K0.00%+31New
UMA Financial Services, Inc.31$14.1K0.00%+31New
FWL Investment Management, LLC31$14.1K0.00%+31New
Meeder Asset Management Inc29$13.2K0.00%−2−6.5%Reduced
Godsey & Gibb Associates28$12.8K0.00%+28New
Proffitt & Goodson Inc24$10.9K0.00%+24New
TD Capital Management LLC23$10.5K0.00%00.0%Unchanged
Halbert Hargrove Global Advisors, LLC23$10.5K0.00%+23New
AdvisorNet Financial, Inc21$9.58K0.00%+18+600.0%Added
Quarry LP21$9.58K0.00%+21New
Wealthspire Advisors, LLC20$9.26K0.00%+20New
South State Corp.20$9.12K0.00%−6−23.1%Reduced
Cromwell Holdings LLC20$9.12K0.00%00.0%Unchanged
Dogwood Wealth Management LLC20$9.12K0.00%00.0%Unchanged
TCTC Holdings, LLC19$8.66K0.00%00.0%Unchanged
Evergreen Private Wealth LLC17$7.75K0.00%00.0%Unchanged
Cetera Trust Company, N.A16$7.30K0.00%00.0%Unchanged
Vermillion & White Wealth Management Group, LLC16$7.30K0.00%+16New
S&T Bank15$6.84K0.00%00.0%Unchanged
Sherman Asset Management, Inc.15$6.84K0.01%00.0%Unchanged
Raffa Wealth Management, LLC15$6.84K0.00%+2+15.4%Added
Sunbelt Securities, Inc.15$6.84K0.00%00.0%Unchanged
Guerra Advisors Inc15$6.84K0.00%+15New
Mather Group, LLC.14$6.55K0.00%+14New
Trust Co of Vermont14$6.38K0.00%00.0%Unchanged
Marquette Asset Management, LLC14$6.38K0.00%+14New
Valley National Advisers Inc15$6.00K0.00%+15New
Chung Wu Investment Group, LLC13$5.93K0.00%00.0%Unchanged
Motco13$5.93K0.00%+13New
NBC Securities, Inc.12$5.47K0.00%00.0%Unchanged
Umb Bank N A12$5.47K0.00%+4+50.0%Added
Manchester Capital Management LLC12$5.47K0.00%+9+300.0%Added
Johnson Financial Group, Inc.12$5.47K0.00%+12New
Accent Capital Management, LLC12$5.47K0.00%+12New
Hughes Financial Services, LLC12$5.30K0.00%00.0%Unchanged
Mark Sheptoff Financial Planning, LLC10$4.56K0.00%00.0%Unchanged
Archer Investment Corp10$4.56K0.00%00.0%Unchanged
Tripletail Wealth Management, LLC10$4.54K0.01%+10New
Zions Bancorporation, National Association9$4.10K0.00%−637−98.6%Reduced
Tortoise Investment Management, LLC9$4.10K0.00%+3+50.0%Added
Toth Financial Advisory Corp9$4.10K0.00%+4+80.0%Added
Wealth Watch Advisors, INC9$4.10K0.00%+9New
Penserra Capital Management LLC9$4.00K0.00%−3−25.0%Reduced
Cloud Capital Management, LLC10$4.00K0.00%+10New
WFA Asset Management Corp14$3.85K0.00%00.0%Unchanged
Washington Trust Advisors, Inc.8$3.83K0.00%−174−95.6%Reduced
Clear Investment Research, LLC8$3.65K0.00%00.0%Unchanged
FSA Wealth Management LLC8$3.65K0.00%00.0%Unchanged
Highline Wealth Partners LLC8$3.65K0.00%+1+14.3%Added
DiNuzzo Private Wealth, Inc.8$3.57K0.00%−4−33.3%Reduced
Front Row Advisors LLC7$3.19K0.00%−2−22.2%Reduced
City Holding Co7$3.19K0.00%+7New
Winnow Wealth LLC7$3.19K0.00%+7New
Bay Harbor Wealth Management, LLC6$2.74K0.00%00.0%Unchanged
Montag A & Associates Inc6$2.73K0.00%00.0%Unchanged
CBIZ Investment Advisory Services, LLC5$2.28K0.00%00.0%Unchanged
Principia Wealth Advisory, LLC5$2.28K0.00%00.0%Unchanged
Asset Dedication, LLC5$2.28K0.00%+5New
Retirement Wealth Solutions LLC5$2.28K0.00%+5New
American Capital Advisory, LLC4$1.82K0.00%00.0%Unchanged
Beaird Harris Wealth Management, LLC4$1.82K0.00%+1+33.3%Added