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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
Ogorek Anthony Joseph3$00.00%+3New
Bear Mountain Capital, Inc.1$2570.00%+1New
GWM Advisors LLC1$2700.00%−972−99.9%Reduced
Creative Financial Designs Inc1$2700.00%+1New
TD Private Client Wealth LLC1$2700.00%+1New
ROSS\JOHNSON & Associates LLC1$2700.00%+1New
Halbert Hargrove Global Advisors, LLC1$2710.00%+1New
HFM Investment Advisors, LLC1$2710.00%+1New
Logan Capital Management Inc2$5400.00%00.0%Unchanged
Parkworth Wealth Management, Inc.2$5400.00%+1+100.0%Added
Thurston, Springer, Miller, Herd & Titak, Inc.2$5400.00%+2New
Umb Bank N A2$5400.00%+2New
Bay Harbor Wealth Management, LLC2$5400.00%+2New
CoreCap Advisors, LLC2$5400.00%+2New
Dogwood Wealth Management LLC2$5400.00%+2New
Manchester Capital Management LLC2$5410.00%00.0%Unchanged
WealthTrak Capital Management LLC2$5410.00%+1+100.0%Added
Principia Wealth Advisory, LLC3$7300.00%−1−25.0%Reduced
AdvisorNet Financial, Inc3$8100.00%00.0%Unchanged
Rothschild Investment LLC3$8100.00%+2+200.0%Added
Abound Wealth Management3$8110.00%−1−25.0%Reduced
Winnow Wealth LLC4$8430.00%+1+33.3%Added
Highline Wealth Partners LLC4$1.08K0.00%+1+33.3%Added
Richardson Financial Services Inc.5$1.35K0.00%−2−28.6%Reduced
CBIZ Investment Advisory Services, LLC5$1.35K0.00%+2+66.7%Added
Garde Capital, Inc.5$1.35K0.00%+5New
Montag A & Associates Inc6$1.57K0.00%00.0%Unchanged
S&T Bank6$1.62K0.00%+6New
Oakworth Capital, Inc.6$1.62K0.00%+6New
Cromwell Holdings LLC6$1.62K0.00%+6New
Global Financial Private Client, LLC7$1.89K0.00%+5+250.0%Added
HHM Wealth Advisors, LLC7$1.89K0.00%00.0%Unchanged
SJS Investment Consulting Inc.7$1.89K0.00%+3+75.0%Added
Hughes Financial Services, LLC8$2.05K0.00%+8New
WFA Asset Management Corp14$2.09K0.00%00.0%Unchanged
FSA Wealth Management LLC8$2.16K0.00%00.0%Unchanged
Clear Investment Research, LLC8$2.16K0.00%+1+14.3%Added
Curio Wealth, LLC1$2.35K0.00%+1New
Mark Sheptoff Financial Planning, LLC10$2.70K0.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.10$2.70K0.00%+3+42.9%Added
Raffa Wealth Management, LLC13$3.51K0.00%00.0%Unchanged
Semmax Financial Advisors Inc.14$3.52K0.00%00.0%Unchanged
Trust Co of Vermont14$3.78K0.00%00.0%Unchanged
Front Row Advisors LLC14$3.78K0.00%00.0%Unchanged
Avion Wealth18$4.00K0.00%00.0%Unchanged
Sunbelt Securities, Inc.15$4.05K0.00%00.0%Unchanged
Sherman Asset Management, Inc.15$4.05K0.00%00.0%Unchanged
Cetera Trust Company, N.A16$4.32K0.00%00.0%Unchanged
Quent Capital, LLC17$4.59K0.00%00.0%Unchanged
Nova Wealth Management, Inc.17$4.59K0.00%+17New
TCTC Holdings, LLC19$5.13K0.00%+19New
Mather Group, LLC.20$5.42K0.00%+8+66.7%Added
South State Corp.21$5.67K0.00%+21New
Princeton Global Asset Management LLC25$6.75K0.00%−25−50.0%Reduced
Meeder Asset Management Inc26$7.02K0.00%−12−31.6%Reduced
Brown Brothers Harriman & Co27$7.29K0.00%−3−10.0%Reduced
TD Waterhouse Canada Inc.30$7.64K0.00%00.0%Unchanged
Aventura Private Wealth, LLC30$8.10K0.00%00.0%Unchanged
Cornerstone Planning Group LLC34$8.23K0.00%+11+47.8%Added
Leonteq Securities AG32$9.07K0.00%−115−78.2%Reduced
ORG Partners LLC36$9.20K0.00%+36New
Bogart Wealth, LLC35$9.45K0.00%+4+12.9%Added
JFS Wealth Advisors, LLC35$9.45K0.00%+9+34.6%Added
Whittier Trust Co36$9.72K0.00%00.0%Unchanged
Bell Investment Advisors, Inc37$9.99K0.00%+6+19.4%Added
CVA Family Office, LLC37$9.99K0.00%+12+48.0%Added
Whipplewood Advisors, LLC105$10.3K0.01%+71+208.8%Added
SBI Securities Co., Ltd.40$10.8K0.00%+4+11.1%Added
J.Safra Asset Management Corp41$11.1K0.00%+34+485.7%Added
WPG Advisers, LLC47$12.7K0.01%+8+20.5%Added
Private Wealth Asset Management, LLC47$12.7K0.00%+47New
Peoples Financial Services Corp.50$13.5K0.01%00.0%Unchanged
Piscataqua Savings Bank50$13.5K0.01%00.0%Unchanged
Generali Asset Management SPA SGR50$13.5K0.00%−3−5.7%Reduced
St. Johns Investment Management Company, LLC50$13.5K0.01%00.0%Unchanged
Saudi Central Bank51$13.8K0.07%+51New
Private Wealth Management Group, LLC51$13.8K0.01%+43+537.5%Added
Bokf, NA52$14.0K0.00%−329−86.4%Reduced
Truvestments Capital LLC57$15.4K0.00%00.0%Unchanged
MV Capital Management, Inc.60$16.2K0.00%+10+20.0%Added
Hemington Wealth Management66$17.0K0.00%+18+37.5%Added
Sachetta, LLC66$17.8K0.01%−2−2.9%Reduced
Fifth Third Bancorp70$18.9K0.00%+5+7.7%Added
Sierra Ocean, LLC71$19.2K0.02%+5+7.6%Added
TFC Financial Management74$20.0K0.00%00.0%Unchanged
Riverview Trust Co78$21.1K0.02%00.0%Unchanged
SRS Capital Advisors, Inc.85$23.0K0.00%−396−82.3%Reduced
Cape Investment Advisory, Inc.90$24.3K0.01%00.0%Unchanged
Harbour Investments, Inc.91$24.6K0.00%−42−31.6%Reduced
Sandy Spring Bank92$24.8K0.00%−5−5.2%Reduced
Hartford Financial Management Inc.100$27.0K0.01%00.0%Unchanged
Boston Private Wealth LLC100$27.0K0.00%+100New
Bessemer Group Inc108$29.0K0.00%+69+176.9%Added
Global Trust Asset Management, LLC122$32.9K0.02%00.0%Unchanged
First Horizon Advisors, Inc.124$33.5K0.00%00.0%Unchanged
Brown, Lisle/Cummings, Inc.132$35.6K0.01%+7+5.6%Added
Parkside Financial Bank & Trust135$36.5K0.00%+79+141.1%Added
Massmutual Trust Co FSB144$38.9K0.00%+37+34.6%Added
Carolinas Wealth Consulting LLC157$42.4K0.01%+8+5.4%Added
Capital Advisors, Ltd. LLC162$44.0K0.01%00.0%Unchanged