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, Q4 2025
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Dec 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
- 852
- +55 vs. Q3 2025
- Shares held
- 132.8M
- +3.06M (+2.4%) vs. Q3 2025
- Total value
- $52.7B
- −$6.43B (−10.9%) vs. Q3 2025
- New holders
- 172
- 290 more added
- Sold out
- 117
- 291 more reduced
26 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wealthcare Advisory Partners LLC | 1,311 | $521.3K | 0.01% | +1,311 | New |
| AlphaCentric Advisors LLC | 1,295 | $515.0K | 0.51% | +1,295 | New |
| Sava Infond d.o.o. | 1,285 | $511.0K | 0.07% | −355−21.6% | Reduced |
| S-Bank Fund Management Ltd | 1,281 | $509.4K | 0.07% | −312−19.6% | Reduced |
| Crossmark Global Holdings, Inc. | 1,281 | $509.4K | 0.01% | +57+4.7% | Added |
| Winslow Capital Management, LLC | 1,266 | $503.4K | 0.00% | −69−5.2% | Reduced |
| Frank, Rimerman Advisors LLC | 1,250 | $497.1K | 0.03% | −1−0.1% | Reduced |
| Pinnacle Financial Partners, Inc. | 1,237 | $491.9K | 0.00% | +1,237 | New |
| Farther Finance Advisors, LLC | 1,235 | $491.0K | 0.01% | +507+69.6% | Added |
| Cigna Investments Inc | 1,230 | $490.0K | 0.07% | 00.0% | Unchanged |
| Bridges Investment Management Inc | 1,216 | $483.5K | 0.01% | +422+53.1% | Added |
| Smartleaf Asset Management LLC | 1,203 | $477.9K | 0.02% | +126+11.7% | Added |
| Norden Group LLC | 1,190 | $473.2K | 0.05% | −221−15.7% | Reduced |
| Wedmont Private Capital | 1,113 | $470.2K | 0.02% | +58+5.5% | Added |
| Caerus Investment Advisors, LLC | 1,173 | $466.4K | 0.16% | −499−29.8% | Reduced |
| Mathes Company, Inc. | 1,155 | $459.0K | 0.16% | 00.0% | Unchanged |
| Lecap Asset Management Ltd | 1,151 | $457.7K | 0.18% | −267−18.8% | Reduced |
| Hilltop Holdings Inc. | 1,139 | $452.9K | 0.03% | −50−4.2% | Reduced |
| Sagespring Wealth Partners, LLC | 1,136 | $451.8K | 0.01% | −151−11.7% | Reduced |
| Flow Traders U.S. LLC | 1,135 | $451.0K | 0.01% | +1,135 | New |
| TB Alternative Assets Ltd. | 1,133 | $450.5K | 0.07% | 00.0% | Unchanged |
| Banque Pictet & Cie SA | 1,120 | $445.4K | 0.00% | −265−19.1% | Reduced |
| Abel Hall, LLC | 1,111 | $441.8K | 0.10% | +1,111 | New |
| Simplify Asset Management Inc. | 1,109 | $441.0K | 0.01% | +335+43.3% | Added |
| North Star Asset Management Inc | 1,105 | $439.4K | 0.02% | −200−15.3% | Reduced |
| Capital Group Private Client Services, Inc. | 1,070 | $425.5K | 0.01% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 1,061 | $421.9K | 0.02% | −69−6.1% | Reduced |
| Sentinus, LLC | 1,051 | $417.9K | 0.04% | +1,051 | New |
| Coastal Bridge Advisors, LLC | 1,048 | $416.7K | 0.03% | −49−4.5% | Reduced |
| Prosperity Consulting Group, LLC | 1,041 | $414.0K | 0.02% | +1,041 | New |
| Nichols & Pratt Advisers LLP | 1,039 | $413.2K | 0.03% | −4−0.4% | Reduced |
| Elevate Capital Advisors, LLC | 1,039 | $413.2K | 0.27% | +1,039 | New |
| Asahi Life Asset Management Co., Ltd. | 1,033 | $410.8K | 0.23% | −10−1.0% | Reduced |
| Waddell & Associates, LLC | 1,017 | $404.4K | 0.03% | −1−0.1% | Reduced |
| Breakwater Capital Group | 1,007 | $400.4K | 0.06% | −20−1.9% | Reduced |
| Parcion Private Wealth LLC | 1,002 | $398.4K | 0.02% | +213+27.0% | Added |
| Calamos Advisors LLC | 1,000 | $397.6K | 0.00% | −200−16.7% | Reduced |
| Westmount Partners, LLC | 1,000 | $397.6K | 0.10% | 00.0% | Unchanged |
| Livforsakringsbolaget Skandia, Omsesidigt | 1,000 | $397.6K | 0.02% | 00.0% | Unchanged |
| CAPROCK Group, Inc. | 992 | $394.5K | 0.01% | +135+15.8% | Added |
| Oppenheimer & Co Inc | 966 | $384.1K | 0.01% | −750−43.7% | Reduced |
| Generali Investments, Management Co LLC | 965 | $383.7K | 0.08% | +965 | New |
| Optimist Retirement Group LLC | 962 | $382.5K | 0.18% | +962 | New |
| Cynosure Management, LLC | 950 | $377.8K | 0.04% | +950 | New |
| Ostrum Asset Management | 947 | $376.6K | 0.02% | +566+148.6% | Added |
| Aaron Wealth Advisors | 932 | $370.6K | 0.02% | −177−16.0% | Reduced |
| Picton Mahoney Asset Management | 932 | $370.6K | 0.00% | +932 | New |
| Prelude Capital Management, LLC | 928 | $369.0K | 0.03% | +928 | New |
| Thayer Partners, LLC | 927 | $368.6K | 0.18% | +927 | New |
| HCR Wealth Advisors | 924 | $367.4K | 0.04% | 00.0% | Unchanged |
| denkapparat Operations GmbH | 912 | $362.7K | 0.20% | +912 | New |
| Atomi Financial Group, Inc. | 907 | $360.8K | 0.01% | −35−3.7% | Reduced |
| waypoint wealth counsel | 895 | $355.9K | 0.13% | +274+44.1% | Added |
| GAMMA Investing LLC | 893 | $355.1K | 0.02% | +70+8.5% | Added |
| Beese Fulmer Investment Management, Inc. | 888 | $353.1K | 0.02% | +888 | New |
| Savant Capital, LLC | 875 | $347.9K | 0.00% | −8−0.9% | Reduced |
| Ellevest, Inc. | 863 | $343.2K | 0.05% | +89+11.5% | Added |
| Jackson Thornton Asset Management, LLC | 842 | $342.2K | 0.03% | −76−8.3% | Reduced |
| Poinciana Advisors Group, LLC | 851 | $338.4K | 0.27% | −6−0.7% | Reduced |
| Stephens Inc | 845 | $336.0K | 0.00% | +146+20.9% | Added |
| Warren Averett Asset Management, LLC | 840 | $334.0K | 0.00% | −25−2.9% | Reduced |
| Snowden Capital Advisors LLC | 834 | $331.6K | 0.01% | −33−3.8% | Reduced |
| We Are One Seven, LLC | 833 | $331.2K | 0.01% | +133+19.0% | Added |
| HighPoint Advisor Group LLC | 832 | $330.8K | 0.01% | +128+18.2% | Added |
| Nwam LLC | 914 | $330.3K | 0.02% | +2+0.2% | Added |
| Parallel Advisors, LLC | 826 | $328.5K | 0.01% | +30+3.8% | Added |
| Chapin Davis, Inc. | 825 | $328.1K | 0.08% | 00.0% | Unchanged |
| Cookson Peirce & Co Inc | 811 | $322.5K | 0.01% | +264+48.3% | Added |
| Concurrent Investment Advisors, LLC | 802 | $318.9K | 0.00% | +802 | New |
| Ascent Group, LLC | 795 | $316.1K | 0.01% | +171+27.4% | Added |
| Blueshift Asset Management, LLC | 791 | $314.5K | 0.09% | +188+31.2% | Added |
| Beacon Pointe Advisors, LLC | 790 | $314.1K | 0.00% | −164−17.2% | Reduced |
| Lido Advisors, LLC | 717 | $311.9K | 0.00% | +59+9.0% | Added |
| Jones Financial Companies LLLP | 780 | $310.2K | 0.00% | +238+43.9% | Added |
| Perigon Wealth Management, LLC | 776 | $308.6K | 0.01% | −407−34.4% | Reduced |
| Wick Capital Partners, LLC | 769 | $305.8K | 0.05% | +769 | New |
| SkyOak Wealth, LLC | 760 | $302.2K | 0.05% | −87−10.3% | Reduced |
| Kaufman Rossin Wealth, LLC | 749 | $297.7K | 0.16% | +266+55.1% | Added |
| Benjamin Edwards Inc | 733 | $291.4K | 0.00% | +246+50.5% | Added |
| Banco Santander, S.A. | 731 | $290.7K | 0.00% | +731 | New |
| Sym Financial Corp | 729 | $289.9K | 0.03% | +54+8.0% | Added |
| Meridian Financial, LLC | 728 | $289.5K | 0.16% | −100−12.1% | Reduced |
| Perfromance Wealth Partners, LLC | 725 | $288.3K | 0.01% | 00.0% | Unchanged |
| Ofi Invest Asset Management | 776 | $281.4K | 0.00% | +373+92.6% | Added |
| Bradley Foster & Sargent Inc | 701 | $278.8K | 0.00% | +81+13.1% | Added |
| Independent Financial Group, LLC | 698 | $277.6K | 0.01% | +66+10.4% | Added |
| GenTrust, LLC | 695 | $276.4K | 0.01% | +695 | New |
| Essex Financial Services, Inc. | 690 | $274.2K | 0.02% | −24−3.4% | Reduced |
| Dynasty Wealth Management, LLC | 688 | $273.6K | 0.00% | +20+3.0% | Added |
| Ashton Thomas Securities, LLC | 688 | $273.6K | 0.05% | +688 | New |
| Fiduciary Trust Co | 680 | $270.5K | 0.00% | +7+1.0% | Added |
| SRS Capital Advisors, Inc. | 678 | $269.6K | 0.01% | −12,407−94.8% | Reduced |
| Scientech Research LLC | 676 | $268.8K | 0.17% | −3,196−82.5% | Reduced |
| Glenmede Trust Co NA | 675 | $268.4K | 0.00% | +675 | New |
| Savvy Advisors, Inc. | 672 | $267.2K | 0.01% | −38−5.4% | Reduced |
| EP Wealth Advisors, LLC | 671 | $266.8K | 0.00% | +671 | New |
| L2 Asset Management, LLC | 671 | $266.8K | 0.04% | +60+9.8% | Added |
| Legacy Wealth Asset Management, LLC | 668 | $265.6K | 0.07% | −26−3.7% | Reduced |
| IFP Advisors, Inc | 664 | $264.0K | 0.01% | +173+35.2% | Added |
| Skopos Labs, Inc. | 648 | $258.3K | 0.01% | +648 | New |