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, Q3 2025
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Sep 30, 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
- 823
- +178 vs. Q2 2025
- Shares held
- 129.9M
- −193.8K (−0.1%) vs. Q2 2025
- Total value
- $59.2B
- +$16.8B (+39.6%) vs. Q2 2025
- New holders
- 225
- 283 more added
- Sold out
- 47
- 223 more reduced
8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Allianz Asset Management GmbH | 106,816 | $48.7M | 0.06% | −99,177−48.1% | Reduced |
| Aviva PLC | 103,206 | $47.1M | 0.09% | +6,141+6.3% | Added |
| Eventide Asset Management, LLC | 101,739 | $46.4M | 0.76% | −24,163−19.2% | Reduced |
| SEI Investments Co | 94,481 | $43.1M | 0.05% | −214,138−69.4% | Reduced |
| Barclays PLC | 94,408 | $43.1M | 0.02% | +350+0.4% | Added |
| Woodline Partners LP | 91,791 | $41.9M | 0.20% | −531,324−85.3% | Reduced |
| Great West Life Assurance Co | 93,092 | $41.6M | 0.06% | +1,938+2.1% | Added |
| Nomura Asset Management Co Ltd | 89,869 | $41.0M | 0.11% | −1,505−1.6% | Reduced |
| Westfield Capital Management Co LP | 87,908 | $40.1M | 0.17% | −98,997−53.0% | Reduced |
| Parkman Healthcare Partners LLC | 87,690 | $40.0M | 4.39% | −4,648−5.0% | Reduced |
| Aquatic Capital Management LLC | 84,059 | $38.3M | 0.71% | +84,059 | New |
| Assenagon Asset Management S.A. | 80,381 | $36.7M | 0.05% | +62,695+354.5% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 79,652 | $36.3M | 0.15% | −5,236−6.2% | Reduced |
| Capital International Ltd | 78,223 | $35.7M | 1.29% | −4,577−5.5% | Reduced |
| Jain Global LLC | 78,046 | $35.6M | 0.46% | +61,316+366.5% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 77,461 | $35.3M | 0.08% | −8,273−9.6% | Reduced |
| Capital International Inc | 75,638 | $34.5M | 0.28% | +3,807+5.3% | Added |
| Rock Springs Capital Management LP | 74,250 | $33.9M | 1.98% | −25,750−25.8% | Reduced |
| HSBC Holdings PLC | 73,014 | $33.3M | 0.02% | −8,734−10.7% | Reduced |
| Storebrand Asset Management AS | 72,017 | $32.8M | 0.09% | +27,696+62.5% | Added |
| Man Group plc | 71,673 | $32.7M | 0.06% | +63,564+783.9% | Added |
| Asset Management One Co.,Ltd. | 69,610 | $31.7M | 0.09% | +300+0.4% | Added |
| State of Wisconsin Investment Board | 68,529 | $31.2M | 0.07% | −9,577−12.3% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 67,935 | $31.0M | 0.47% | −77,065−53.1% | Reduced |
| Ensign Peak Advisors, Inc | 67,733 | $30.9M | 0.05% | −32,476−32.4% | Reduced |
| Manufacturers Life Insurance Company, The | 67,672 | $30.9M | 0.03% | −19,168−22.1% | Reduced |
| Lord, Abbett & Co. LLC | 67,220 | $30.7M | 0.09% | +67,220 | New |
| New York State Common Retirement Fund | 64,424 | $29.4M | 0.04% | +1,152+1.8% | Added |
| Swedbank AB | 63,578 | $29.0M | 0.03% | −737−1.1% | Reduced |
| Panagora Asset Management Inc | 62,354 | $28.4M | 0.11% | −30,145−32.6% | Reduced |
| Ieq Capital, LLC | 62,177 | $28.4M | 0.09% | +56,055+915.6% | Added |
| AXA Investment Managers S.A. | 61,663 | $28.1M | 0.08% | +61,663 | New |
| Driehaus Capital Management LLC | 61,379 | $28.0M | 0.20% | −18,335−23.0% | Reduced |
| Citigroup Inc | 60,866 | $27.8M | 0.02% | −187,372−75.5% | Reduced |
| Integral Health Asset Management, LLC | 60,000 | $27.4M | 1.99% | +5,000+9.1% | Added |
| Danske Bank A/S | 57,407 | $26.2M | 0.07% | +2,400+4.4% | Added |
| Treasurer of the State of North Carolina | 56,123 | $25.6M | 0.08% | −2,181−3.7% | Reduced |
| Casdin Capital, LLC | 55,000 | $25.1M | 2.09% | −26,500−32.5% | Reduced |
| Fiera Capital Corp | 53,804 | $24.5M | 0.08% | +26,061+93.9% | Added |
| Quadrature Capital Ltd | 48,920 | $22.3M | 0.26% | +47,033+2,492.5% | Added |
| KLP Kapitalforvaltning AS | 48,800 | $22.3M | 0.09% | −300−0.6% | Reduced |
| LPL Financial LLC | 48,480 | $22.1M | 0.01% | +18,141+59.8% | Added |
| State of New Jersey Common Pension Fund D | 45,532 | $20.8M | 0.08% | +1,673+3.8% | Added |
| Engineers Gate Manager LP | 43,849 | $20.0M | 0.23% | +11,219+34.4% | Added |
| Alliancebernstein L.P. | 43,776 | $20.0M | 0.01% | −23,355−34.8% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 42,404 | $19.3M | 0.10% | +2,173+5.4% | Added |
| Resona Asset Management Co.,Ltd. | 41,497 | $18.9M | 0.09% | −2,203−5.0% | Reduced |
| Van Eck Associates Corp | 41,133 | $18.8M | 0.02% | −13,427−24.6% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 40,944 | $18.7M | 0.04% | +10,193+33.1% | Added |
| Groupama Asset Managment | 32,082 | $18.6M | 0.27% | −16,303−33.7% | Reduced |
| CI Private Wealth, LLC | 39,392 | $18.0M | 0.03% | −2,760−6.5% | Reduced |
| Bronte Capital Management Pty Ltd. | 34,974 | $17.8M | 1.61% | +34,974 | New |
| Public Employees Retirement System of Ohio | 38,994 | $17.8M | 0.06% | +242+0.6% | Added |
| Arizona State Retirement System | 38,512 | $17.6M | 0.09% | +584+1.5% | Added |
| Investment Management Corp of Ontario | 37,958 | $17.3M | 0.26% | +6,437+20.4% | Added |
| Oddo BHF Asset Management SAS | 37,927 | $17.3M | 0.66% | +1,987+5.5% | Added |
| Parnassus Investments | 37,014 | $16.9M | 0.04% | −398−1.1% | Reduced |
| Jump Financial, LLC | 34,877 | $15.9M | 0.20% | +17,485+100.5% | Added |
| Artia Global Partners LP | 34,570 | $15.8M | 2.77% | +13,600+64.9% | Added |
| DnB Asset Management AS | 34,268 | $15.6M | 0.06% | +6,805+24.8% | Added |
| Rosenblum Silverman Sutton S F Inc | 34,002 | $15.5M | 3.54% | −390−1.1% | Reduced |
| Voleon Capital Management LP | 33,965 | $15.5M | 0.38% | +32,609+2,404.8% | Added |
| Bridgewater Associates, LP | 33,911 | $15.5M | 0.06% | +33,911 | New |
| Teacher Retirement System of Texas | 33,642 | $15.3M | 0.06% | −2,766−7.6% | Reduced |
| AIA Group Ltd | 33,313 | $15.2M | 0.27% | +3,081+10.2% | Added |
| Teachers Retirement System of the State of Kentucky | 32,818 | $15.0M | 0.11% | −400−1.2% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 32,369 | $14.8M | 0.04% | +967+3.1% | Added |
| Palo Alto Investors LP | 32,320 | $14.7M | 2.73% | −43,215−57.2% | Reduced |
| Antipodes Partners Ltd | 31,956 | $14.6M | 0.33% | −90,848−74.0% | Reduced |
| Rhenman & Partners Asset Management AB | 31,875 | $14.5M | 1.61% | −19,322−37.7% | Reduced |
| SG Americas Securities, LLC | 31,850 | $14.5M | 0.05% | +31,850 | New |
| ExodusPoint Capital Management, LP | 30,823 | $14.1M | 0.20% | +30,823 | New |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 30,215 | $13.8M | 0.12% | +200+0.7% | Added |
| Zurich Insurance Group Ltd | 29,988 | $13.7M | 0.10% | −37,806−55.8% | Reduced |
| CWM, LLC | 29,287 | $13.4M | 0.04% | +23,775+431.3% | Added |
| Polymer Capital Management (HK) LTD | 28,900 | $13.2M | 1.83% | +31+0.1% | Added |
| Gotham Asset Management, LLC | 28,135 | $12.8M | 0.06% | +10,348+58.2% | Added |
| STRS Ohio | 27,985 | $12.8M | 0.05% | −2,155−7.1% | Reduced |
| Forsta Ap-Fonden | 27,900 | $12.7M | 0.08% | +1,500+5.7% | Added |
| U.S. Capital Wealth Advisors, LLC | 27,544 | $12.6M | 0.34% | −24,483−47.1% | Reduced |
| Cerity Partners LLC | 27,429 | $12.5M | 0.02% | +17,316+171.2% | Added |
| Illinois Municipal Retirement Fund | 27,145 | $12.4M | 0.16% | +1,099+4.2% | Added |
| Brown Advisory Inc | 26,592 | $12.1M | 0.02% | −2,879−9.8% | Reduced |
| USS Investment Management Ltd | 26,366 | $12.0M | 0.06% | 00.0% | Unchanged |
| Mariner, LLC | 26,332 | $12.0M | 0.02% | +11,259+74.7% | Added |
| Xponance, Inc. | 26,152 | $11.9M | 0.09% | +1,135+4.5% | Added |
| Erste Asset Management GmbH | 26,010 | $11.6M | 0.11% | −3,800−12.7% | Reduced |
| IFM Investors Pty Ltd | 26,041 | $11.6M | 0.10% | +683+2.7% | Added |
| Mediolanum International Funds Ltd | 25,451 | $11.4M | 0.12% | +25,451 | New |
| Advisor Group Holdings, Inc. | 24,938 | $11.3M | 0.02% | +21,151+558.5% | Added |
| Kornitzer Capital Management Inc | 23,689 | $10.8M | 0.22% | +525+2.3% | Added |
| Eagle Health Investments LP | 23,686 | $10.8M | 2.84% | −22,400−48.6% | Reduced |
| Creative Planning | 22,862 | $10.4M | 0.01% | +7,282+46.7% | Added |
| China Universal Asset Management Co., Ltd. | 22,787 | $10.4M | 0.86% | −5,030−18.1% | Reduced |
| AMF Pensionsforsakring AB | 22,558 | $10.3M | 0.07% | −9,979−30.7% | Reduced |
| Walleye Capital LLC | 22,345 | $10.2M | 0.08% | −16,370−42.3% | Reduced |
| Banco Bilbao Vizcaya Argentaria, S.A. | 22,235 | $10.1M | 0.08% | −16−0.1% | Reduced |
| Atika Capital Management LLC | 22,206 | $10.1M | 0.86% | −5,494−19.8% | Reduced |
| Natixis Advisors, L.P. | 21,682 | $9.89M | 0.01% | +11,573+114.5% | Added |
| Swiss Life Asset Management Ltd | 21,521 | $9.81M | 0.05% | −2,268−9.5% | Reduced |