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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 2026

Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 31, 2026. 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
793
−48 vs. Q4 2025
Shares held
131.4M
+14.7M (+12.6%) vs. Q4 2025
Total value
$43.4B
−$2.95B (−6.4%) vs. Q4 2025
New holders
106
323 more added
Sold out
154
258 more reduced

11 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2026: 793 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 2026: $43.4B
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 2026

Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2025.

Institutions holding ALNY in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Ogorek Anthony Joseph3$00.00%00.0%Unchanged
Activest Wealth Management1$3310.00%−107−99.1%Reduced
HFM Investment Advisors, LLC1$3310.00%−9−90.0%Reduced
Creative Financial Designs Inc1$3310.00%−1−50.0%Reduced
Central Trust Co1$3310.00%00.0%Unchanged
Hollencrest Capital Management1$3310.00%00.0%Unchanged
Davis Capital Management1$3310.00%00.0%Unchanged
Atlantic Private Wealth, LLC1$3310.00%00.0%Unchanged
Glen Eagle Advisors, LLC1$3310.00%00.0%Unchanged
Seneschal Advisors, LLC1$3310.00%00.0%Unchanged
ROSS\JOHNSON & Associates LLC1$3310.01%00.0%Unchanged
Stone House Investment Management, LLC1$3310.00%+1New
Kilter Group LLC1$3310.00%+1New
Vision Retirement, LLC1$3310.00%+1New
Investors Portfolio Services LLC2$5870.00%−1−33.3%Reduced
CoreCap Advisors, LLC2$6620.00%−150−98.7%Reduced
Kayne Anderson Rudnick Investment Management LLC2$6620.00%−1−33.3%Reduced
Quaker Wealth Management, LLC2$6620.00%00.0%Unchanged
Investors Research Corp2$6620.00%+2New
TopTier Wealth Management, LLC2$6620.00%+2New
High Note Wealth, LLC3$9930.00%−2−40.0%Reduced
Rosenberg Matthew Hamilton3$9930.00%00.0%Unchanged
1015 Capital Partners, LLC3$9930.00%00.0%Unchanged
GHP Investment Advisors, Inc.3$9930.00%+3New
Vermillion Wealth Management, Inc.3$9930.00%+3New
Addison Advisors LLC3$9930.00%+3New
Caitlin John, LLC3$9930.00%+3New
CX Institutional4$1.00K0.00%−1−20.0%Reduced
Winthrop Capital Management, LLC4$1.00K0.00%00.0%Unchanged
Phillip James Consulting Co.3$1.00K0.00%+3New
Strategic Wealth Partners, Ltd.4$1.24K0.00%−11−73.3%Reduced
AdvisorNet Financial, Inc4$1.32K0.00%−2−33.3%Reduced
Greykasell Wealth Strategies, Inc.4$1.32K0.00%00.0%Unchanged
NBT Bank N A4$1.32K0.00%+4New
Triumph Capital Management4$1.32K0.00%+4New
Wall Street Financial Group, Inc.4$1.32K0.00%+4New
JNBA Financial Advisors4$1.32K0.00%00.0%Unchanged
Beaird Harris Wealth Management, LLC4$1.32K0.00%00.0%Unchanged
Abound Wealth Management4$1.44K0.00%00.0%Unchanged
Montag A & Associates Inc5$1.54K0.00%00.0%Unchanged
Principia Wealth Advisory, LLC5$1.65K0.00%−1−16.7%Reduced
Dunhill Financial, LLC5$1.65K0.00%00.0%Unchanged
Lodestone Wealth Management LLC5$1.65K0.00%00.0%Unchanged
Nemes Rush Group LLC5$1.65K0.00%00.0%Unchanged
Asset Dedication, LLC5$1.66K0.00%00.0%Unchanged
American Capital Advisory, LLC5$1.66K0.00%+1+25.0%Added
Rialto Wealth Management, LLC5$1.66K0.00%+2+66.7%Added
Cassaday & Co Wealth Management LLC5$1.66K0.00%+5New
Bare Financial Services, Inc6$1.99K0.00%+5+500.0%Added
Heritage Wealth Advisors6$1.99K0.00%+6New
Intentional Wealth Strategies, LLC6$1.99K0.00%+6New
Retirement Wealth Solutions LLC6$1.99K0.00%+4+200.0%Added
Marquette Asset Management, LLC6$1.99K0.00%+6New
Penserra Capital Management LLC9$2.00K0.00%00.0%Unchanged
Front Row Advisors LLC7$2.32K0.00%00.0%Unchanged
North Star Investment Management Corp.7$2.32K0.00%+7New
Westfuller Advisors, LLC7$2.32K0.00%+7New
Johnson Financial Group, Inc.7$2.32K0.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.8$2.65K0.00%00.0%Unchanged
Clear Investment Research, LLC8$2.65K0.00%+8New
RMG Wealth Management LLC10$2.85K0.00%+10New
Ameriflex Group, Inc.9$2.98K0.00%00.0%Unchanged
Mark Sheptoff Financial Planning, LLC10$3.01K0.00%00.0%Unchanged
Tripletail Wealth Management, LLC10$3.19K0.00%00.0%Unchanged
NBC Securities, Inc.10$3.31K0.00%+2+25.0%Added
Accent Capital Management, LLC10$3.31K0.00%−2−16.7%Reduced
Curio Wealth, LLC10$3.31K0.00%00.0%Unchanged
Archer Investment Corp10$3.31K0.00%00.0%Unchanged
High Point Wealth Management, LLC10$3.31K0.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC11$3.64K0.00%+2+22.2%Added
Torren Management, LLC11$3.64K0.00%−224−95.3%Reduced
Ancora Advisors, LLC11$3.64K0.00%−11−50.0%Reduced
Mather Group, LLC.11$3.70K0.00%+11New
First Command Advisory Services, Inc.12$3.97K0.00%+9+300.0%Added
Dogwood Wealth Management LLC13$4.30K0.00%−18−58.1%Reduced
Chung Wu Investment Group, LLC13$4.30K0.00%00.0%Unchanged
South State Corp.13$4.30K0.00%−1−7.1%Reduced
Chilton Capital Management LLC13$4.30K0.00%+12+1,200.0%Added
Financial Consulate, Inc13$4.30K0.00%+12+1,200.0%Added
HighMark Wealth Management LLC14$4.63K0.00%00.0%Unchanged
Cornerstone Financial Management LLC14$4.63K0.00%+1+7.7%Added
Sherman Asset Management, Inc.15$4.96K0.00%00.0%Unchanged
Signature Equity Partners, LLC15$4.96K0.00%+9+150.0%Added
First Pacific Financial15$4.96K0.00%+7+87.5%Added
Cetera Trust Company, N.A16$5.29K0.00%00.0%Unchanged
Fourth Dimension Wealth, LLC16$5.29K0.00%00.0%Unchanged
Highline Wealth Partners LLC16$5.29K0.00%+8+100.0%Added
Hughes Financial Services, LLC17$5.63K0.00%+5+41.7%Added
Rakuten Securities, Inc.18$5.96K0.00%−171−90.5%Reduced
Osbon Capital Management LLC18$5.96K0.00%00.0%Unchanged
SJS Investment Consulting Inc.19$6.29K0.00%−16−45.7%Reduced
Raffa Wealth Management, LLC19$6.29K0.00%+1+5.6%Added
Ares Financial Consulting, LLC20$6.58K0.01%00.0%Unchanged
Cromwell Holdings LLC20$6.62K0.00%00.0%Unchanged
Sunbelt Securities, Inc.21$6.95K0.00%+6+40.0%Added
United Financial Planning Group LLC21$6.95K0.00%+17+425.0%Added
TD Capital Management LLC23$7.61K0.00%00.0%Unchanged
UMA Financial Services, Inc.24$7.94K0.00%00.0%Unchanged
Wilkerson Advisory Group LLC25$8.27K0.00%+8+47.1%Added
Twin Peaks Wealth Advisors, LLC28$9.26K0.00%+28New