Skip to main content
Livermore
Livermore
ZHEN

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
HFM Investment Advisors, LLC1$4560.00%−2−66.7%Reduced
Activest Wealth Management1$4560.00%00.0%Unchanged
ROSS\JOHNSON & Associates LLC1$4560.01%00.0%Unchanged
Central Trust Co1$4560.00%+1New
Davis Capital Management1$4560.00%+1New
Rise Advisors, LLC1$4560.00%+1New
Seneschal Advisors, LLC1$4560.00%+1New
SJS Investment Consulting Inc.2$9120.00%−2−50.0%Reduced
Logan Capital Management Inc2$9120.00%00.0%Unchanged
Quaker Wealth Management, LLC2$9120.00%+1+100.0%Added
Creative Financial Designs Inc2$9120.00%+1+100.0%Added
Breakwater Investment Management2$9120.00%+2New
Binnacle Investments Inc2$9120.00%+2New
Ogorek Anthony Joseph3$1.00K0.00%00.0%Unchanged
PEAK6 LLC3$1.21K0.00%+3New
Kayne Anderson Rudnick Investment Management LLC2$1.23K0.00%−3−60.0%Reduced
Leonteq Securities AG3$1.37K0.00%−26−89.7%Reduced
Rialto Wealth Management, LLC3$1.37K0.00%00.0%Unchanged
TD Private Client Wealth LLC3$1.37K0.00%+2+200.0%Added
Bare Financial Services, Inc3$1.37K0.00%+3New
Abound Wealth Management4$1.65K0.00%+1+33.3%Added
American Capital Advisory, LLC4$1.82K0.00%00.0%Unchanged
Beaird Harris Wealth Management, LLC4$1.82K0.00%+1+33.3%Added
Rakuten Securities, Inc.4$1.82K0.00%+4New
Greykasell Wealth Strategies, Inc.4$1.82K0.00%+4New
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
Montag A & Associates Inc6$2.73K0.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC6$2.74K0.00%00.0%Unchanged
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
DiNuzzo Private Wealth, Inc.8$3.57K0.00%−4−33.3%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
Washington Trust Advisors, Inc.8$3.83K0.00%−174−95.6%Reduced
WFA Asset Management Corp14$3.85K0.00%00.0%Unchanged
Penserra Capital Management LLC9$4.00K0.00%−3−25.0%Reduced
Cloud Capital Management, LLC10$4.00K0.00%+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
Tripletail Wealth Management, LLC10$4.54K0.01%+10New
Mark Sheptoff Financial Planning, LLC10$4.56K0.00%00.0%Unchanged
Archer Investment Corp10$4.56K0.00%00.0%Unchanged
Hughes Financial Services, LLC12$5.30K0.00%00.0%Unchanged
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
Chung Wu Investment Group, LLC13$5.93K0.00%00.0%Unchanged
Motco13$5.93K0.00%+13New
Valley National Advisers Inc15$6.00K0.00%+15New
Trust Co of Vermont14$6.38K0.00%00.0%Unchanged
Marquette Asset Management, LLC14$6.38K0.00%+14New
Mather Group, LLC.14$6.55K0.00%+14New
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
Cetera Trust Company, N.A16$7.30K0.00%00.0%Unchanged
Vermillion & White Wealth Management Group, LLC16$7.30K0.00%+16New
Evergreen Private Wealth LLC17$7.75K0.00%00.0%Unchanged
TCTC Holdings, LLC19$8.66K0.00%00.0%Unchanged
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
Wealthspire Advisors, LLC20$9.26K0.00%+20New
AdvisorNet Financial, Inc21$9.58K0.00%+18+600.0%Added
Quarry LP21$9.58K0.00%+21New
TD Capital Management LLC23$10.5K0.00%00.0%Unchanged
Halbert Hargrove Global Advisors, LLC23$10.5K0.00%+23New
Proffitt & Goodson Inc24$10.9K0.00%+24New
Godsey & Gibb Associates28$12.8K0.00%+28New
Meeder Asset Management Inc29$13.2K0.00%−2−6.5%Reduced
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
Painted Porch Advisors LLC32$14.6K0.01%+32New
JFS Wealth Advisors, LLC35$16.0K0.00%00.0%Unchanged
Bogart Wealth, LLC35$16.0K0.00%00.0%Unchanged
Avion Wealth37$16.0K0.00%−1−2.6%Reduced
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
Colonial Trust Co38$17.3K0.00%+38New
Aventura Private Wealth, LLC40$18.2K0.01%00.0%Unchanged
Millstone Evans Group, LLC40$18.2K0.01%+40New
Private Wealth Asset Management, LLC42$19.2K0.00%00.0%Unchanged
JPL Wealth Management, LLC46$21.0K0.00%+46New
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