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 |
|---|---|---|---|---|---|
| Values First Advisors, Inc. | 3,246 | $1.07M | 0.56% | +20+0.6% | Added |
| Exchange Traded Concepts, LLC | 3,252 | $1.08M | 0.01% | +891+37.7% | Added |
| Sumitomo Life Insurance Co | 3,284 | $1.09M | 0.03% | +90+2.8% | Added |
| Kentucky Retirement Systems Insurance Trust Fund | 3,285 | $1.09M | 0.07% | 00.0% | Unchanged |
| Lombard Odier Asset Management (Switzerland) SA | 3,320 | $1.10M | 0.04% | +3,320 | New |
| Spectrum Planning & Advisory Services Inc. | 3,350 | $1.11M | 0.55% | 00.0% | Unchanged |
| Burney Co | 3,411 | $1.13M | 0.04% | −1,171−25.6% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 3,500 | $1.16M | 0.00% | 00.0% | Unchanged |
| Kennedy Capital Management, Inc. | 3,503 | $1.16M | 0.02% | +288+9.0% | Added |
| Laird Norton Trust Company, LLC | 3,507 | $1.16M | 0.03% | +6+0.2% | Added |
| Summit Trail Advisors, LLC | 3,598 | $1.19M | 0.02% | +84+2.4% | Added |
| Ci Investments Inc. | 3,611 | $1.19M | 0.01% | −2,441−40.3% | Reduced |
| SummitTX Capital, L.P. | 3,611 | $1.19M | 0.04% | +146+4.2% | Added |
| Zions Bancorporation, National Association | 3,640 | $1.20M | 0.08% | +3,493+2,376.2% | Added |
| Draper Asset Management, LLC | 3,773 | $1.25M | 0.71% | +1,351+55.8% | Added |
| New York Life Investment Management LLC | 3,778 | $1.25M | 0.01% | +2,033+116.5% | Added |
| Quantitative Investment Management, LLC | 3,857 | $1.28M | 0.13% | −474−10.9% | Reduced |
| Ethic Inc. | 3,869 | $1.28M | 0.02% | +651+20.2% | Added |
| Atlantic Trust, LLC | 3,938 | $1.30M | 0.21% | −28−0.7% | Reduced |
| Advisors Asset Management, Inc. | 3,952 | $1.31M | 0.02% | −351−8.2% | Reduced |
| Gilbert & Cook, Inc. | 3,960 | $1.31M | 0.17% | −58−1.4% | Reduced |
| Ambassador Advisors, LLC | 3,961 | $1.31M | 0.20% | +187+5.0% | Added |
| North Dakota State Investment Board | 4,044 | $1.34M | 0.06% | −745−15.6% | Reduced |
| Metis Global Partners, LLC | 4,049 | $1.34M | 0.03% | −136−3.2% | Reduced |
| United Capital Financial Advisers, LLC | 4,088 | $1.35M | 0.01% | +1,639+66.9% | Added |
| Howland Capital Management LLC | 4,234 | $1.40M | 0.06% | −9−0.2% | Reduced |
| Laurion Capital Management LP | 4,431 | $1.47M | 0.14% | +4,431 | New |
| FORA Capital, LLC | 4,471 | $1.48M | 0.11% | +1,005+29.0% | Added |
| Pacer Advisors, Inc. | 4,478 | $1.48M | 0.00% | −5,110−53.3% | Reduced |
| Omers Administration Corp | 4,517 | $1.49M | 0.01% | 00.0% | Unchanged |
| Sequoia Financial Advisors, LLC | 4,560 | $1.51M | 0.01% | +348+8.3% | Added |
| E. Ohman J:or Asset Management AB | 4,584 | $1.52M | 0.04% | 00.0% | Unchanged |
| Azzad Asset Management Inc | 4,591 | $1.52M | 0.15% | 00.0% | Unchanged |
| Brevan Howard Capital Management LP | 4,621 | $1.53M | 0.02% | +184+4.1% | Added |
| Strategic Global Advisors, LLC | 4,673 | $1.55M | 0.25% | +4,673 | New |
| Brinker Capital Investments, LLC | 4,713 | $1.56M | 0.01% | +308+7.0% | Added |
| Envestnet Portfolio Solutions, Inc. | 4,758 | $1.57M | 0.01% | +413+9.5% | Added |
| Ameritas Investment Partners, Inc. | 4,776 | $1.58M | 0.05% | 00.0% | Unchanged |
| Colony Group, LLC | 4,802 | $1.59M | 0.00% | −2,281−32.2% | Reduced |
| AustralianSuper Pty Ltd | 4,803 | $1.59M | 0.01% | 00.0% | Unchanged |
| Saudi Central Bank | 4,876 | $1.61M | 0.03% | +4,876 | New |
| Norinchukin Bank, The | 4,959 | $1.64M | 0.02% | +472+10.5% | Added |
| Susquehanna Portfolio Strategies, LLC | 5,005 | $1.66M | 0.02% | 00.0% | Unchanged |
| Ishara Investments LP | 5,125 | $1.70M | 1.71% | +5,125 | New |
| Sterling Capital Management LLC | 5,182 | $1.71M | 0.03% | +1,625+45.7% | Added |
| Fieldview Capital Management, LLC | 5,275 | $1.75M | 0.51% | +5,275 | New |
| Tokio Marine Asset Management Co Ltd | 5,280 | $1.75M | 0.06% | +265+5.3% | Added |
| Vestcor Inc | 5,319 | $1.76M | 0.05% | +1,786+50.6% | Added |
| Integrated Wealth Concepts LLC | 5,374 | $1.78M | 0.01% | +1,134+26.7% | Added |
| Empowered Funds, LLC | 5,410 | $1.79M | 0.01% | −14,021−72.2% | Reduced |
| Aware Super Pty Ltd as trustee of Aware Super | 5,473 | $1.81M | 0.03% | +5,473 | New |
| Vontobel Holding Ltd. | 5,476 | $1.81M | 0.01% | +3,157+136.1% | Added |
| Group One Trading, L.P. | 5,545 | $1.83M | 0.06% | +5,545 | New |
| Principal Financial Group Inc | 5,649 | $1.87M | 0.00% | +2,151+61.5% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 5,697 | $1.89M | 0.02% | −9,172−61.7% | Reduced |
| Brighton Jones LLC | 5,699 | $1.89M | 0.04% | +5,699 | New |
| Walleye Trading LLC | 5,756 | $1.90M | 0.04% | −2,901−33.5% | Reduced |
| Abn Amro Investment Solutions | 5,767 | $1.91M | 0.02% | +8+0.1% | Added |
| Edgestream Partners, L.P. | 5,810 | $1.92M | 0.06% | −1,438−19.8% | Reduced |
| Sanctuary Advisors, LLC | 5,839 | $1.93M | 0.01% | −681−10.4% | Reduced |
| Jane Street Group, LLC | 5,902 | $1.95M | 0.00% | −305,386−98.1% | Reduced |
| Dai-Ichi Life Insurance Company, Ltd | 5,930 | $1.96M | 0.06% | −325−5.2% | Reduced |
| Banque Cantonale Vaudoise | 5,978 | $1.98M | 0.07% | −5,059−45.8% | Reduced |
| Fisher Asset Management, LLC | 6,045 | $2.00M | 0.00% | +6,045 | New |
| E Fund Management Co., Ltd. | 6,074 | $2.01M | 0.06% | +6,074 | New |
| AG2R la Mondiale Gestion D'Actifs | 6,205 | $2.05M | 0.09% | +610+10.9% | Added |
| Plato Investment Management Ltd | 6,249 | $2.07M | 0.14% | −5−0.1% | Reduced |
| Advisory Services Network, LLC | 6,314 | $2.09M | 0.03% | −1,779−22.0% | Reduced |
| Allstate Corp | 6,335 | $2.10M | 0.02% | −3,494−35.5% | Reduced |
| Maryland State Retirement & Pension System | 6,346 | $2.10M | 0.04% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 6,437 | $2.13M | 0.00% | −1,687−20.8% | Reduced |
| Vident Advisory, LLC | 6,457 | $2.14M | 0.02% | +1,302+25.3% | Added |
| Capital Group Investment Management Pte. Ltd. | 6,474 | $2.14M | 0.37% | −8,372−56.4% | Reduced |
| Legato Capital Management LLC | 6,514 | $2.16M | 0.20% | +6,514 | New |
| PKO Investment Management Joint-Stock Co | 6,800 | $2.25M | 0.19% | 00.0% | Unchanged |
| Osmosis Investment Management UK Ltd | 7,013 | $2.32M | 0.06% | −694−9.0% | Reduced |
| Pathstone Holdings, LLC | 7,072 | $2.34M | 0.01% | +933+15.2% | Added |
| J.P. Marvel Investment Advisors, LLC | 7,105 | $2.35M | 0.33% | 00.0% | Unchanged |
| US Bancorp | 7,381 | $2.44M | 0.00% | +2,145+41.0% | Added |
| S&CO Inc | 7,400 | $2.45M | 0.15% | −800−9.8% | Reduced |
| Virtus Investment Advisers, Inc. | 7,471 | $2.47M | 0.68% | +5,754+335.1% | Added |
| Prudential PLC | 7,696 | $2.55M | 0.02% | −133−1.7% | Reduced |
| Truist Financial Corp | 7,701 | $2.55M | 0.00% | +1,596+26.1% | Added |
| AIA Group Ltd | 7,742 | $2.56M | 0.04% | −12,435−61.6% | Reduced |
| Bank of Nova Scotia | 7,798 | $2.58M | 0.00% | +49+0.6% | Added |
| MetLife Investment Management | 7,800 | $2.58M | 0.01% | −387−4.7% | Reduced |
| St Germain D J Co Inc | 7,852 | $2.60M | 0.10% | −5−0.1% | Reduced |
| Zacks Investment Management | 7,857 | $2.60M | 0.02% | −4,151−34.6% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 8,478 | $2.70M | 0.01% | −5,609−39.8% | Reduced |
| M&T Bank Corp | 8,237 | $2.73M | 0.01% | +271+3.4% | Added |
| Kestra Investment Management, LLC | 8,396 | $2.78M | 0.05% | +2,382+39.6% | Added |
| Employees Retirement System of Texas | 8,403 | $2.78M | 0.02% | −1,389−14.2% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 8,475 | $2.80M | 0.03% | +3,223+61.4% | Added |
| Mercer Global Advisors Inc | 8,579 | $2.84M | 0.00% | −3,207−27.2% | Reduced |
| Louisiana State Employees Retirement System | 8,700 | $2.88M | 0.05% | −100−1.1% | Reduced |
| Blackstone Group Inc. | 8,775 | $2.90M | 0.01% | +8,775 | New |
| Mutual of America Capital Management LLC | 8,952 | $2.96M | 0.03% | −6,514−42.1% | Reduced |
| NewEdge Wealth, LLC | 9,201 | $3.04M | 0.04% | +1,671+22.2% | Added |
| Transamerica Financial Advisors, Inc. | 9,303 | $3.08M | 0.26% | +697+8.1% | Added |
| Janney Montgomery Scott LLC | 9,339 | $3.09M | 0.01% | +2,836+43.6% | Added |