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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, Q2 2026

Institutional positions in Alnylam Pharmaceuticals, Inc. as of Jun 30, 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
794
+8 vs. Q1 2026
Shares held
133.4M
+2.17M (+1.7%) vs. Q1 2026
Total value
$40.1B
−$3.18B (−7.4%) vs. Q1 2026
New holders
88
322 more added
Sold out
80
285 more reduced

7 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: 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 holdersQ2 2026: 794 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 heldQ2 2026: $40.1B
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, Q2 2026

Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q1 2026.

Institutions holding ALNY in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Ogorek Anthony Joseph3$00.00%00.0%Unchanged
Navigoe, LLC1$00.00%+1New
Darwin Advisors, LLC0$1980.00%0New
Cordant, Inc.1$2230.00%+1New
Creative Financial Designs Inc1$3010.00%00.0%Unchanged
Hollencrest Capital Management1$3010.00%00.0%Unchanged
Stone House Investment Management, LLC1$3010.00%00.0%Unchanged
Atlantic Private Wealth, LLC1$3010.00%00.0%Unchanged
Glen Eagle Advisors, LLC1$3010.00%00.0%Unchanged
ROSS\JOHNSON & Associates LLC1$3010.00%00.0%Unchanged
Decker Retirement Planning Inc.1$3010.00%+1New
Financial Consulate, Inc1$3020.00%−12−92.3%Reduced
Cassaday & Co Wealth Management LLC1$3020.00%−4−80.0%Reduced
Quaker Wealth Management, LLC1$3020.00%−1−50.0%Reduced
DecisionPoint Financial, LLC1$3020.00%+1New
Halbert Hargrove Global Advisors, LLC1$3200.00%+1New
Bare Financial Services, Inc2$6020.00%−4−66.7%Reduced
Investors Research Corp2$6020.00%00.0%Unchanged
Investors Portfolio Services LLC2$6020.00%00.0%Unchanged
Davis Capital Management2$6020.00%+1+100.0%Added
Bryn Mawr Trust Co2$6020.00%+2New
Mechanics Financial Corp2$6020.00%+2New
Barnes Dennig Private Wealth Management LLC2$6020.00%+2New
Seneschal Advisors, LLC2$6030.00%+1+100.0%Added
Whipplewood Advisors, LLC3$9030.00%−26−89.7%Reduced
Phillip James Consulting Co.3$9030.00%00.0%Unchanged
Caitlin John, LLC3$9030.00%00.0%Unchanged
1015 Capital Partners, LLC3$9030.00%00.0%Unchanged
Strengthening Families & Communities, LLC3$9030.00%+3New
Kingdom Financial Group LLC.3$9030.00%+3New
GHP Investment Advisors, Inc.3$9040.00%00.0%Unchanged
Central Trust Co3$9040.00%+2+200.0%Added
HFM Investment Advisors, LLC3$9040.00%+2+200.0%Added
Abound Wealth Management4$1.09K0.00%00.0%Unchanged
Creative Capital Management Investments LLC4$1.20K0.00%+4New
Downshift Financial, LLC4$1.20K0.00%+4New
JNBA Financial Advisors4$1.21K0.00%00.0%Unchanged
Beaird Harris Wealth Management, LLC4$1.21K0.00%00.0%Unchanged
Montag A & Associates Inc5$1.41K0.00%00.0%Unchanged
Dunhill Financial, LLC5$1.50K0.00%00.0%Unchanged
Lodestone Wealth Management LLC5$1.50K0.00%00.0%Unchanged
Nemes Rush Group LLC5$1.50K0.00%00.0%Unchanged
Front Row Advisors LLC7$1.55K0.00%00.0%Unchanged
Heritage Wealth Advisors6$1.81K0.00%00.0%Unchanged
Marquette Asset Management, LLC6$1.81K0.00%00.0%Unchanged
Retirement Wealth Solutions LLC6$1.81K0.00%00.0%Unchanged
Asset Dedication, LLC6$1.81K0.00%+1+20.0%Added
Penserra Capital Management LLC9$2.00K0.00%00.0%Unchanged
Winthrop Capital Management, LLC6$2.00K0.00%+2+50.0%Added
American Capital Advisory, LLC7$2.11K0.00%+2+40.0%Added
Kayne Anderson Rudnick Investment Management LLC7$2.23K0.00%+5+250.0%Added
American National Bank8$2.41K0.00%+8New
Planning Strategies Inc.8$2.41K0.00%+8New
DiNuzzo Private Wealth, Inc.8$2.41K0.00%00.0%Unchanged
Westfuller Advisors, LLC9$2.71K0.00%+2+28.6%Added
Millstone Evans Group, LLC10$3.01K0.00%−30−75.0%Reduced
Archer Investment Corp10$3.01K0.00%00.0%Unchanged
High Point Wealth Management, LLC10$3.01K0.00%00.0%Unchanged
Mark Sheptoff Financial Planning, LLC10$3.01K0.00%00.0%Unchanged
North Star Investment Management Corp.10$3.01K0.00%+3+42.9%Added
Principia Wealth Advisory, LLC10$3.01K0.00%+5+100.0%Added
Tripletail Wealth Management, LLC10$3.13K0.00%00.0%Unchanged
Ancora Advisors, LLC11$3.31K0.00%00.0%Unchanged
Torren Management, LLC11$3.31K0.00%00.0%Unchanged
South State Corp.11$3.31K0.00%−2−15.4%Reduced
S&T Bank12$3.61K0.00%−26−68.4%Reduced
High Note Wealth, LLC12$3.61K0.00%+9+300.0%Added
Chung Wu Investment Group, LLC13$3.91K0.00%00.0%Unchanged
Chilton Capital Management LLC13$3.91K0.00%00.0%Unchanged
Grove Bank & Trust14$4.21K0.00%−28−66.7%Reduced
HighMark Wealth Management LLC14$4.21K0.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC14$4.21K0.00%+3+27.3%Added
Sherman Asset Management, Inc.15$4.51K0.00%00.0%Unchanged
Ameriflex Group, Inc.15$4.51K0.00%+6+66.7%Added
Cetera Trust Company, N.A16$4.82K0.00%00.0%Unchanged
Wealth Enhancement Trust Services, Inc.16$4.82K0.00%+16New
Signature Equity Partners, LLC17$5.12K0.00%+2+13.3%Added
Osbon Capital Management LLC18$5.42K0.00%00.0%Unchanged
Highline Wealth Partners LLC18$5.42K0.00%+2+12.5%Added
AdvisorNet Financial, Inc18$5.42K0.00%+14+350.0%Added
CoreCap Advisors, LLC18$5.42K0.00%+16+800.0%Added
Accent Capital Management, LLC19$5.72K0.00%+9+90.0%Added
SJS Investment Consulting Inc.20$6.02K0.00%+1+5.3%Added
United Financial Planning Group LLC21$6.32K0.00%00.0%Unchanged
Ares Financial Consulting, LLC21$6.32K0.00%+1+5.0%Added
Raffa Wealth Management, LLC21$6.32K0.00%+2+10.5%Added
Fourth Dimension Wealth, LLC22$6.62K0.00%+6+37.5%Added
Activest Wealth Management22$6.62K0.00%+21+2,100.0%Added
Synergy Investment Management, LLC24$6.88K0.00%+24New
UMA Financial Services, Inc.23$6.92K0.00%−1−4.2%Reduced
TD Capital Management LLC23$6.92K0.00%00.0%Unchanged
Wilkerson Advisory Group LLC24$7.22K0.00%−1−4.0%Reduced
Rakuten Securities, Inc.25$7.53K0.00%+7+38.9%Added
Cornerstone Financial Management LLC26$7.83K0.01%+12+85.7%Added
Mather Group, LLC.26$7.88K0.00%+15+136.4%Added
Cape Investment Advisory, Inc.27$8.13K0.00%+27New
Silver Grove Financial Group, Inc.27$8.13K0.00%+27New
Rialto Wealth Management, LLC27$8.27K0.00%+22+440.0%Added
Action Point Financial Planning, LLC30$8.73K0.00%+30New
WPG Advisers, LLC29$8.73K0.01%00.0%Unchanged