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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 794 | $40.1B |
| Q1 2026 | 793 | $43.4B |
| Q4 2025 | 852 | $52.7B |
| Q3 2025 | 823 | $59.2B |
| Q2 2025 | 653 | $43.1B |
| Q1 2025 | 625 | $34.8B |
| Q4 2024 | 594 | $30.1B |
| Q3 2024 | 569 | $34.1B |
| Q2 2024 | 525 | $29.1B |
| Q1 2024 | 499 | $17.2B |
| Q4 2023 | 501 | $22.4B |
| Q3 2023 | 454 | $20.9B |
| Q2 2023 | 477 | $22.5B |
| Q1 2023 | 478 | $24.0B |
| Q4 2022 | 489 | $28.4B |
| Q3 2022 | 497 | $26.7B |
| Q2 2022 | 424 | $16.6B |
| Q1 2022 | 443 | $18.6B |
| Q4 2021 | 435 | $19.0B |
| Q3 2021 | 407 | $21.1B |
| Q2 2021 | 401 | $19.0B |
| Q1 2021 | 391 | $15.4B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Generali Investments, Management Co LLC | 1,227 | $406.0K | 0.09% | +262+27.2% | Added |
| MAI Capital Management | 1,209 | $400.2K | 0.00% | +762+170.5% | Added |
| Wedmont Private Capital | 1,222 | $399.9K | 0.01% | +109+9.8% | Added |
| Perbak Capital Partners LLP | 1,205 | $398.7K | 0.10% | +1,205 | New |
| Bradley Foster & Sargent Inc | 1,203 | $398.0K | 0.01% | +502+71.6% | Added |
| GAM Holding AG | 1,198 | $396.4K | 0.03% | +1,198 | New |
| CAPROCK Group, Inc. | 1,190 | $393.8K | 0.01% | +198+20.0% | Added |
| Kestra Advisory Services, LLC | 1,184 | $391.8K | 0.00% | −667−36.0% | Reduced |
| Lido Advisors, LLC | 1,180 | $390.5K | 0.00% | +463+64.6% | Added |
| MASTERINVEST Kapitalanlage GmbH | 1,179 | $390.1K | 0.04% | +1,179 | New |
| Beacon Pointe Advisors, LLC | 1,157 | $382.8K | 0.00% | +367+46.5% | Added |
| Mathes Company, Inc. | 1,155 | $382.0K | 0.14% | 00.0% | Unchanged |
| Sagespring Wealth Partners, LLC | 1,144 | $378.6K | 0.01% | +8+0.7% | Added |
| Krilogy Financial LLC | 1,173 | $375.5K | 0.01% | −414−26.1% | Reduced |
| North Star Asset Management Inc | 1,103 | $364.9K | 0.02% | −2−0.2% | Reduced |
| Evolve Private Wealth, LLC | 1,100 | $364.0K | 0.02% | −683−38.3% | Reduced |
| Benjamin Edwards Inc | 1,085 | $358.8K | 0.00% | +352+48.0% | Added |
| Asahi Life Asset Management Co., Ltd. | 1,083 | $358.3K | 0.23% | +50+4.8% | Added |
| SIH Partners, LLLP | 1,073 | $355.0K | 0.01% | +1,073 | New |
| Eventide Asset Management, LLC | 1,111 | $351.2K | 0.01% | −32,924−96.7% | Reduced |
| Cookson Peirce & Co Inc | 1,060 | $350.7K | 0.01% | +249+30.7% | Added |
| GTS Securities LLC | 1,052 | $348.1K | 0.01% | +527+100.4% | Added |
| Prosperity Consulting Group, LLC | 1,041 | $344.4K | 0.02% | 00.0% | Unchanged |
| Nichols & Pratt Advisers LLP | 1,039 | $343.8K | 0.02% | 00.0% | Unchanged |
| denkapparat Operations GmbH | 1,032 | $341.5K | 0.14% | +120+13.2% | Added |
| Cambria Investment Management, L.P. | 1,019 | $337.2K | 0.02% | +1,019 | New |
| Wealth Alliance | 1,016 | $336.1K | 0.03% | +1,016 | New |
| Breakwater Capital Group | 1,007 | $333.2K | 0.04% | 00.0% | Unchanged |
| Westmount Partners, LLC | 1,000 | $330.9K | 0.08% | 00.0% | Unchanged |
| Livforsakringsbolaget Skandia, Omsesidigt | 1,000 | $330.6K | 0.01% | 00.0% | Unchanged |
| Skopos Labs, Inc. | 997 | $329.8K | 0.01% | +349+53.9% | Added |
| GAMMA Investing LLC | 994 | $328.9K | 0.02% | +101+11.3% | Added |
| Coastal Bridge Advisors, LLC | 987 | $326.6K | 0.02% | −61−5.8% | Reduced |
| Oversea-Chinese Banking CORP Ltd | 973 | $321.9K | 0.01% | +408+72.2% | Added |
| Quarry LP | 966 | $319.6K | 0.06% | +822+570.8% | Added |
| AlphaGrep UK Ltd | 961 | $318.0K | 0.09% | −895−48.2% | Reduced |
| Ostrum Asset Management | 961 | $318.0K | 0.02% | +14+1.5% | Added |
| Concurrent Investment Advisors, LLC | 945 | $312.7K | 0.00% | +143+17.8% | Added |
| Atomi Financial Group, Inc. | 934 | $308.9K | 0.01% | +27+3.0% | Added |
| Thayer Partners, LLC | 927 | $306.7K | 0.15% | 00.0% | Unchanged |
| HCR Wealth Advisors | 924 | $305.7K | 0.03% | 00.0% | Unchanged |
| Net Worth Advisory Group | 920 | $304.3K | 0.06% | +920 | New |
| Alpine Global Management, LLC | 917 | $303.4K | 0.05% | −1,145−55.5% | Reduced |
| Northwestern Mutual Wealth Management Co | 916 | $303.1K | 0.00% | +335+57.7% | Added |
| Snowden Capital Advisors LLC | 916 | $303.1K | 0.01% | +82+9.8% | Added |
| Nwam LLC | 914 | $302.4K | 0.02% | 00.0% | Unchanged |
| Warren Averett Asset Management, LLC | 907 | $300.1K | 0.00% | +67+8.0% | Added |
| Farther Finance Advisors, LLC | 910 | $299.1K | 0.00% | −325−26.3% | Reduced |
| Verition Fund Management LLC | 898 | $297.1K | 0.00% | −3,107−77.6% | Reduced |
| Parallel Advisors, LLC | 891 | $294.8K | 0.01% | +65+7.9% | Added |
| DDD Partners, LLC | 889 | $294.1K | 0.02% | +889 | New |
| Savant Capital, LLC | 875 | $289.5K | 0.00% | 00.0% | Unchanged |
| DRW Securities, LLC | 875 | $289.3K | 0.02% | −1,166−57.1% | Reduced |
| Poinciana Advisors Group, LLC | 851 | $281.6K | 0.22% | 00.0% | Unchanged |
| Chapin Davis, Inc. | 844 | $279.3K | 0.06% | +19+2.3% | Added |
| SRS Capital Advisors, Inc. | 839 | $275.3K | 0.01% | +161+23.7% | Added |
| First Affirmative Financial Network | 809 | $267.6K | 0.10% | +809 | New |
| We Are One Seven, LLC | 780 | $258.1K | 0.01% | −53−6.4% | Reduced |
| Daymark Wealth Partners, LLC | 768 | $254.1K | 0.01% | +768 | New |
| Apollon Wealth Management, LLC | 767 | $253.7K | 0.00% | +767 | New |
| SkyOak Wealth, LLC | 760 | $251.5K | 0.05% | 00.0% | Unchanged |
| Sowell Financial Services LLC | 754 | $249.6K | 0.01% | +109+16.9% | Added |
| Capstone Investment Advisors, LLC | 753 | $249.1K | 0.00% | −8,165−91.6% | Reduced |
| Legacy Wealth Asset Management, LLC | 748 | $247.5K | 0.06% | +80+12.0% | Added |
| L2 Asset Management, LLC | 748 | $247.5K | 0.02% | +77+11.5% | Added |
| Glenmede Trust Co NA | 731 | $241.9K | 0.00% | +56+8.3% | Added |
| Aaron Wealth Advisors | 729 | $241.2K | 0.01% | −203−21.8% | Reduced |
| Perfromance Wealth Partners, LLC | 725 | $239.9K | 0.01% | 00.0% | Unchanged |
| Quadcap Wealth Management, LLC | 707 | $233.9K | 0.03% | +707 | New |
| Essex Financial Services, Inc. | 707 | $233.9K | 0.01% | +17+2.5% | Added |
| Ashton Thomas Securities, LLC | 696 | $230.3K | 0.03% | +8+1.2% | Added |
| LeConte Wealth Management, LLC | 695 | $230.0K | 0.15% | +91+15.1% | Added |
| Evoke Wealth, LLC | 693 | $229.3K | 0.00% | +72+11.6% | Added |
| EP Wealth Advisors, LLC | 692 | $229.0K | 0.00% | +21+3.1% | Added |
| Modern Wealth Management, LLC | 696 | $228.8K | 0.00% | +696 | New |
| Reuter James Wealth Management, LLC | 691 | $228.6K | 0.03% | +691 | New |
| Fiduciary Trust Co | 683 | $225.9K | 0.00% | +3+0.4% | Added |
| 111 Capital | 666 | $220.4K | 0.05% | −785−54.1% | Reduced |
| Sentinus, LLC | 658 | $217.7K | 0.02% | −393−37.4% | Reduced |
| Camden Capital, LLC | 654 | $216.5K | 0.01% | +654 | New |
| PCM Encore, LLC | 651 | $215.3K | 0.04% | +46+7.6% | Added |
| EverSource Wealth Advisors, LLC | 640 | $211.8K | 0.01% | −421−39.7% | Reduced |
| Drive Wealth Management, LLC | 639 | $211.3K | 0.04% | +639 | New |
| Plante Moran Financial Advisors, LLC | 635 | $210.1K | 0.01% | 00.0% | Unchanged |
| Bull Harbor Capital LLC | 634 | $209.8K | 0.06% | +634 | New |
| Ofi Invest Asset Management | 729 | $209.3K | 0.00% | −47−6.1% | Reduced |
| Independent Financial Group, LLC | 630 | $208.4K | 0.00% | −68−9.7% | Reduced |
| Ascent Group, LLC | 627 | $207.5K | 0.01% | −168−21.1% | Reduced |
| Acadian Asset Management LLC | 621 | $205.0K | 0.00% | −20,687−97.1% | Reduced |
| Waddell & Associates, LLC | 618 | $204.5K | 0.01% | −399−39.2% | Reduced |
| Quadrant Capital Group LLC | 611 | $202.2K | 0.01% | −4−0.7% | Reduced |
| Intrust Bank NA | 605 | $200.2K | 0.02% | +67+12.5% | Added |
| Banque Transatlantique SA | 542 | $179.3K | 0.00% | +542 | New |
| E Fund Management (Hong Kong) Co., Ltd. | 531 | $175.7K | 0.08% | +142+36.5% | Added |
| Fortitude Family Office, LLC | 522 | $172.7K | 0.04% | +5+1.0% | Added |
| Pinnacle Wealth Planning Services, Inc. | 506 | $167.3K | 0.02% | +457+932.7% | Added |
| Versant Capital Management, Inc | 502 | $166.1K | 0.02% | +86+20.7% | Added |
| Align Financial, LLC | 500 | $165.4K | 0.09% | −198,325−99.7% | Reduced |
| IFP Advisors, Inc | 482 | $159.5K | 0.00% | −182−27.4% | Reduced |
| Wealth Science Advisors LLC | 396 | $157.5K | 0.09% | +396 | New |