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 2025
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 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
- 625
- +39 vs. Q4 2024
- Shares held
- 129.4M
- +2.10M (+1.7%) vs. Q4 2024
- Total value
- $34.8B
- +$4.88B (+16.3%) vs. Q4 2024
- New holders
- 106
- 235 more added
- Sold out
- 67
- 205 more reduced
8 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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 2025
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Neuberger Berman Group LLC | 98,439 | $26.6M | 0.02% | −11,269−10.3% | Reduced |
| Panagora Asset Management Inc | 96,804 | $26.1M | 0.13% | +41,340+74.5% | Added |
| Barclays PLC | 95,719 | $25.8M | 0.01% | −8,128−7.8% | Reduced |
| Voya Investment Management LLC | 91,144 | $24.6M | 0.03% | −3,942−4.1% | Reduced |
| Aviva PLC | 90,053 | $24.3M | 0.06% | +12,809+16.6% | Added |
| AXA S.A. | 88,652 | $23.9M | 0.08% | −6,654−7.0% | Reduced |
| PFM Health Sciences, LP | 87,145 | $23.5M | 1.80% | +87,145 | New |
| Nomura Asset Management Co Ltd | 86,843 | $23.4M | 0.07% | +4,058+4.9% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 86,124 | $23.3M | 0.11% | −39,367−31.4% | Reduced |
| Great West Life Assurance Co | 83,828 | $22.7M | 0.04% | +6,909+9.0% | Added |
| Palo Alto Investors LP | 83,488 | $22.5M | 4.29% | −57,193−40.7% | Reduced |
| Capital International Ltd | 81,906 | $22.1M | 0.96% | +1,624+2.0% | Added |
| Los Angeles Capital Management LLC | 80,862 | $21.8M | 0.10% | −13,960−14.7% | Reduced |
| Ensign Peak Advisors, Inc | 80,479 | $21.7M | 0.04% | +4,015+5.3% | Added |
| J. Goldman & Co LP | 74,185 | $20.0M | 0.71% | +74,185 | New |
| State of Wisconsin Investment Board | 73,155 | $19.8M | 0.05% | −5,220−6.7% | Reduced |
| Macquarie Group Ltd | 72,592 | $19.6M | 0.02% | +11,928+19.7% | Added |
| Envestnet Asset Management Inc | 72,047 | $19.5M | 0.01% | +6,033+9.1% | Added |
| Susquehanna International Group, LLP | 70,465 | $19.0M | 0.03% | +59,648+551.4% | Added |
| Parkman Healthcare Partners LLC | 68,938 | $18.6M | 2.21% | +30,266+78.3% | Added |
| Asset Management One Co.,Ltd. | 68,457 | $18.5M | 0.06% | +3,094+4.7% | Added |
| Capital International Inc | 66,961 | $18.1M | 0.22% | −38,124−36.3% | Reduced |
| Eagle Health Investments LP | 65,656 | $17.7M | 4.60% | −10,600−13.9% | Reduced |
| Iron Triangle Partners LP | 65,409 | $17.7M | 2.78% | +65,409 | New |
| New York State Common Retirement Fund | 64,272 | $17.4M | 0.03% | −7,956−11.0% | Reduced |
| Van Eck Associates Corp | 64,144 | $17.3M | 0.02% | −3,674−5.4% | Reduced |
| Illinois Municipal Retirement Fund | 62,665 | $16.9M | 0.25% | 00.0% | Unchanged |
| Voloridge Investment Management, LLC | 62,302 | $16.8M | 0.06% | +45,526+271.4% | Added |
| HSBC Holdings PLC | 61,265 | $16.5M | 0.01% | −317−0.5% | Reduced |
| Canada Pension Plan Investment Board | 60,532 | $16.3M | 0.02% | −113,489−65.2% | Reduced |
| Soros Fund Management LLCSuperinvestorSoros Fund Management | 60,000 | $16.2M | 0.29% | +60,000 | New |
| Treasurer of the State of North Carolina | 58,955 | $15.9M | 0.06% | −27,960−32.2% | Reduced |
| Driehaus Capital Management LLC | 57,128 | $15.4M | 0.15% | +23,648+70.6% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 57,119 | $15.4M | 0.04% | +2,713+5.0% | Added |
| U.S. Capital Wealth Advisors, LLC | 56,011 | $15.1M | 0.46% | −4,490−7.4% | Reduced |
| HRT Financial LP | 55,173 | $14.9M | 0.09% | +5,273+10.6% | Added |
| Danske Bank A/S | 53,205 | $14.4M | 0.04% | −8,808−14.2% | Reduced |
| Integral Health Asset Management, LLC | 50,000 | $13.5M | 1.50% | +5,000+11.1% | Added |
| Rhenman & Partners Asset Management AB | 48,197 | $13.0M | 1.50% | +31,197+183.5% | Added |
| Groupama Asset Managment | 40,139 | $12.5M | 0.25% | +11,689+41.1% | Added |
| Storebrand Asset Management AS | 45,047 | $12.2M | 0.04% | −223−0.5% | Reduced |
| Alliancebernstein L.P. | 44,837 | $12.1M | 0.00% | +247+0.6% | Added |
| Rafferty Asset Management, LLC | 44,585 | $12.0M | 0.05% | −8,232−15.6% | Reduced |
| Ieq Capital, LLC | 44,014 | $11.9M | 0.09% | +5,208+13.4% | Added |
| State of New Jersey Common Pension Fund D | 43,745 | $11.8M | 0.05% | −3,758−7.9% | Reduced |
| KLP Kapitalforvaltning AS | 43,700 | $11.8M | 0.06% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 42,665 | $11.5M | 0.02% | −235,901−84.7% | Reduced |
| BNP Paribas Arbitrage, SA | 42,575 | $11.5M | 0.01% | +857+2.1% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 42,303 | $11.4M | 0.07% | −241−0.6% | Reduced |
| Public Employees Retirement System of Ohio | 39,669 | $10.7M | 0.04% | −4,588−10.4% | Reduced |
| Resona Asset Management Co.,Ltd. | 38,920 | $10.5M | 0.06% | +2,264+6.2% | Added |
| Victory Capital Management Inc | 37,649 | $10.2M | 0.01% | −2,148−5.4% | Reduced |
| Arizona State Retirement System | 37,248 | $10.1M | 0.06% | +44+0.1% | Added |
| Teacher Retirement System of Texas | 35,285 | $9.53M | 0.04% | −3,790−9.7% | Reduced |
| Bridger Management, LLC | 34,975 | $9.44M | 4.69% | −6,207−15.1% | Reduced |
| Principal Financial Group Inc | 34,701 | $9.37M | 0.01% | +24,323+234.4% | Added |
| Rosenblum Silverman Sutton S F Inc | 34,632 | $9.35M | 2.58% | −143−0.4% | Reduced |
| Mediolanum International Funds Ltd | 34,729 | $9.32M | 0.13% | +25,666+283.2% | Added |
| Teachers Retirement System of the State of Kentucky | 32,713 | $8.83M | 0.08% | −2,000−5.8% | Reduced |
| Ikarian Capital, LLC | 31,594 | $8.53M | 2.78% | +31,594 | New |
| Brown Advisory Inc | 31,385 | $8.47M | 0.01% | −2,495−7.4% | Reduced |
| China Universal Asset Management Co., Ltd. | 30,971 | $8.36M | 0.78% | −8,026−20.6% | Reduced |
| STRS Ohio | 28,817 | $7.78M | 0.03% | +3,817+15.3% | Added |
| Artia Global Partners LP | 28,600 | $7.72M | 2.26% | −27,800−49.3% | Reduced |
| Schroder Investment Management Group | 27,783 | $7.46M | 0.01% | +4,553+19.6% | Added |
| DnB Asset Management AS | 27,297 | $7.37M | 0.03% | +564+2.1% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 26,915 | $7.27M | 0.09% | −2,200−7.6% | Reduced |
| AIA Group Ltd | 26,491 | $7.15M | 0.18% | +3,643+15.9% | Added |
| USS Investment Management Ltd | 26,366 | $7.12M | 0.05% | 00.0% | Unchanged |
| Forsta Ap-Fonden | 25,800 | $6.97M | 0.05% | −29,000−52.9% | Reduced |
| Engineers Gate Manager LP | 25,392 | $6.86M | 0.12% | −8,505−25.1% | Reduced |
| Cinctive Capital Management LP | 24,862 | $6.71M | 0.53% | +6,622+36.3% | Added |
| EFG Asset Management (North America) Corp. | 24,691 | $6.67M | 1.11% | −1,955−7.3% | Reduced |
| British Columbia Investment Management Corp | 24,666 | $6.66M | 0.04% | +84+0.3% | Added |
| IFM Investors Pty Ltd | 23,850 | $6.44M | 0.07% | +150+0.6% | Added |
| Caisse de Depot Et Placement du Quebec | 23,763 | $6.42M | 0.01% | +13,745+137.2% | Added |
| Investment Management Corp of Ontario | 23,277 | $6.29M | 0.13% | +16,178+227.9% | Added |
| Erste Asset Management GmbH | 23,310 | $6.26M | 0.08% | −3,200−12.1% | Reduced |
| Xponance, Inc. | 23,157 | $6.25M | 0.06% | +701+3.1% | Added |
| Banco Bilbao Vizcaya Argentaria, S.A. | 22,763 | $6.15M | 0.06% | +609+2.7% | Added |
| Zacks Investment Management | 22,262 | $6.01M | 0.06% | +22,262 | New |
| Utah Retirement Systems | 21,325 | $5.76M | 0.07% | 00.0% | Unchanged |
| Kodai Capital Management LP | 21,159 | $5.71M | 0.23% | +21,159 | New |
| Cercano Management LLC | 20,772 | $5.61M | 0.16% | +20,772 | New |
| LPL Financial LLC | 20,679 | $5.58M | 0.00% | +2,107+11.3% | Added |
| Oddo BHF Asset Management SAS | 19,821 | $5.35M | 0.22% | +19,821 | New |
| Toronto Dominion Bank | 19,385 | $5.23M | 0.01% | +2,611+15.6% | Added |
| KBC Group NV | 19,312 | $5.21M | 0.02% | −10,714−35.7% | Reduced |
| Catalyst Funds Management Pty Ltd | 19,200 | $5.18M | 1.36% | +19,200 | New |
| Liontrust Investment Partners LLP | 18,880 | $5.10M | 0.08% | +4,857+34.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 18,751 | $5.06M | 0.05% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 18,511 | $5.00M | 0.11% | +18,511 | New |
| Polymer Capital Management (HK) LTD | 17,804 | $4.81M | 0.83% | +7,491+72.6% | Added |
| Alberta Investment Management Corp | 17,700 | $4.78M | 0.03% | −300−1.7% | Reduced |
| Capital Group Investment Management Pte. Ltd. | 17,350 | $4.68M | 0.96% | +179+1.0% | Added |
| Comerica Bank | 17,253 | $4.66M | 0.02% | +3,262+23.3% | Added |
| Fiera Capital Corp | 17,212 | $4.65M | 0.02% | +1,242+7.8% | Added |
| Andra AP-fonden | 16,800 | $4.54M | 0.07% | −11,100−39.8% | Reduced |
| CWM, LLC | 16,664 | $4.50M | 0.02% | +3,473+26.3% | Added |
| J. Safra Sarasin Holding AG | 16,435 | $4.44M | 0.08% | −2,707−14.1% | Reduced |