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, Q2 2026
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Jun 30, 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
- 794
- +8 vs. Q1 2026
- Shares held
- 133.4M
- +2.17M (+1.7%) vs. Q1 2026
- Total value
- $40.1B
- −$3.18B (−7.4%) vs. Q1 2026
- New holders
- 88
- 322 more added
- Sold out
- 80
- 285 more reduced
7 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rosenblum Silverman Sutton S F Inc | 32,172 | $9.68M | 2.33% | −755−2.3% | Reduced |
| Bank of Montreal | 32,834 | $9.88M | 0.00% | +970+3.0% | Added |
| Soleus Capital Management, L.P. | 33,050 | $9.95M | 0.34% | −98,600−74.9% | Reduced |
| Ofi Invest Asset Management | 37,945 | $9.99M | 0.10% | +37,216+5,105.1% | Added |
| STRS Ohio | 33,364 | $10.0M | 0.04% | −2,168−6.1% | Reduced |
| Engineers Gate Manager LP | 33,469 | $10.1M | 0.13% | +967+3.0% | Added |
| Toroso Investments, LLC | 33,541 | $10.1M | 0.02% | −24,386−42.1% | Reduced |
| Groupama Asset Managment | 34,252 | $10.3M | 0.13% | −2,515−6.8% | Reduced |
| USS Investment Management Ltd | 34,492 | $10.4M | 0.04% | +7,644+28.5% | Added |
| 683 Capital Management, LLC | 35,000 | $10.5M | 0.97% | +14,000+66.7% | Added |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 35,077 | $10.6M | 0.32% | −1,948−5.3% | Reduced |
| Bronte Capital Management Pty Ltd. | 35,384 | $10.7M | 1.20% | −1,861−5.0% | Reduced |
| Erste Asset Management GmbH | 36,719 | $10.8M | 0.08% | +409+1.1% | Added |
| Stifel Financial Corp | 35,810 | $10.8M | 0.01% | −14,144−28.3% | Reduced |
| M&G Plc | 35,912 | $10.8M | 0.05% | −1,744−4.6% | Reduced |
| Intech Investment Management LLC | 36,760 | $11.1M | 0.10% | −31,249−45.9% | Reduced |
| Quantinno Capital Management LP | 37,108 | $11.2M | 0.01% | +3,258+9.6% | Added |
| Tredje AP-fonden | 37,206 | $11.2M | 0.05% | −12,388−25.0% | Reduced |
| Public Employees Retirement System of Ohio | 37,998 | $11.4M | 0.03% | −6,024−13.7% | Reduced |
| Arizona State Retirement System | 38,025 | $11.4M | 0.06% | +2,126+5.9% | Added |
| J. Goldman & Co LP | 38,698 | $11.6M | 0.41% | +38,698 | New |
| Mn Services Vermogensbeheer B.V. | 38,700 | $11.7M | 0.09% | +38,700 | New |
| Guggenheim Capital LLC | 39,318 | $11.8M | 0.08% | +2,204+5.9% | Added |
| Nissay Asset Management Corp | 39,482 | $11.9M | 0.05% | +2,584+7.0% | Added |
| Resona Asset Management Co.,Ltd. | 40,053 | $12.0M | 0.06% | +221+0.6% | Added |
| Allianz Asset Management GmbH | 40,413 | $12.2M | 0.01% | −7,249−15.2% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 41,157 | $12.4M | 0.06% | −733−1.7% | Reduced |
| Entropy Technologies, LP | 41,204 | $12.4M | 0.49% | +5,485+15.4% | Added |
| Sierra Summit Advisors LLC | 41,684 | $12.5M | 1.40% | +11,386+37.6% | Added |
| Gotham Asset Management, LLC | 42,051 | $12.7M | 0.03% | −1,659−3.8% | Reduced |
| Driehaus Capital Management LLC | 42,746 | $12.9M | 0.07% | −16,876−28.3% | Reduced |
| State of New Jersey Common Pension Fund D | 42,883 | $12.9M | 0.04% | −2,268−5.0% | Reduced |
| Nykredit A/S | 43,641 | $13.1M | 0.05% | +43,641 | New |
| Mackenzie Financial Corp | 43,988 | $13.2M | 0.01% | +21,481+95.4% | Added |
| Mediolanum International Funds Ltd | 46,396 | $13.6M | 0.12% | +1,277+2.8% | Added |
| Advisor Group Holdings, Inc. | 45,298 | $13.6M | 0.02% | −1,355−2.9% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 45,536 | $13.7M | 0.03% | −29,384−39.2% | Reduced |
| Investment Management Corp of Ontario | 46,155 | $13.9M | 0.18% | −1,000−2.1% | Reduced |
| Ensign Peak Advisors, Inc | 47,829 | $14.4M | 0.02% | −21,818−31.3% | Reduced |
| Trexquant Investment LP | 48,197 | $14.5M | 0.09% | −13,563−22.0% | Reduced |
| Arrowstreet Capital, Limited Partnership | 49,601 | $14.9M | 0.01% | +49,601 | New |
| SEB Asset Management AB | 50,504 | $15.2M | 0.06% | +20,351+67.5% | Added |
| Alliancebernstein L.P. | 46,050 | $15.2M | 0.01% | +1,409+3.2% | Added |
| Parkman Healthcare Partners LLC | 50,672 | $15.3M | 1.57% | +23,756+88.3% | Added |
| National Bank of Canada | 52,467 | $15.8M | 0.01% | −11,140−17.5% | Reduced |
| DnB Asset Management AS | 54,076 | $16.3M | 0.05% | +22,649+72.1% | Added |
| Rafferty Asset Management, LLC | 55,332 | $16.7M | 0.04% | +4,779+9.5% | Added |
| Jain Global LLC | 55,686 | $16.8M | 0.20% | +7,724+16.1% | Added |
| Andra AP-fonden | 56,017 | $16.9M | 0.19% | −30,680−35.4% | Reduced |
| KLP Kapitalforvaltning AS | 56,760 | $17.1M | 0.06% | +5,560+10.9% | Added |
| Treasurer of the State of North Carolina | 56,779 | $17.1M | 0.04% | +2,510+4.6% | Added |
| Storebrand Asset Management AS | 57,580 | $17.3M | 0.04% | −7,015−10.9% | Reduced |
| LPL Financial LLC | 57,890 | $17.4M | 0.00% | −9,747−14.4% | Reduced |
| Capital International Sarl | 58,080 | $17.5M | 0.25% | +4,731+8.9% | Added |
| Van Eck Associates Corp | 58,666 | $17.7M | 0.01% | +4,529+8.4% | Added |
| Asset Management One Co.,Ltd. | 60,096 | $18.1M | 0.05% | +2,387+4.1% | Added |
| Jacobs Levy Equity Management, Inc | 60,986 | $18.4M | 0.07% | −151,218−71.3% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 61,531 | $18.5M | 0.04% | +5,140+9.1% | Added |
| Swedbank AB | 61,894 | $18.6M | 0.02% | −321−0.5% | Reduced |
| Neuberger Berman Group LLC | 62,019 | $18.7M | 0.01% | −31,477−33.7% | Reduced |
| Worldquant Millennium Advisors LLC | 62,180 | $18.7M | 0.06% | +20,020+47.5% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 63,265 | $19.0M | 0.02% | −18,060−22.2% | Reduced |
| Vanguard Global Advisers, LLC | 64,254 | $19.3M | 0.01% | −1,136−1.7% | Reduced |
| Danske Bank A/S | 64,555 | $19.4M | 0.04% | −1,400−2.1% | Reduced |
| Polymer Capital Management (HK) LTD | 64,957 | $19.6M | 1.99% | +7,173+12.4% | Added |
| Rock Springs Capital Management LP | 66,750 | $20.1M | 0.98% | −7,250−9.8% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 66,985 | $20.2M | 0.10% | +18,280+37.5% | Added |
| Vanguard Investments Australia, Ltd. | 67,644 | $20.4M | 0.05% | +1,834+2.8% | Added |
| Deerfield Management Company, L.P. (Series C) | 67,935 | $20.5M | 0.21% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 68,124 | $20.5M | 0.03% | +2,700+4.1% | Added |
| Great West Life Assurance Co | 69,102 | $20.8M | 0.03% | +11,847+20.7% | Added |
| State of Wisconsin Investment Board | 70,171 | $21.1M | 0.04% | +1,288+1.9% | Added |
| Casdin Capital, LLC | 75,000 | $22.6M | 1.13% | 00.0% | Unchanged |
| Natixis Advisors, L.P. | 75,311 | $22.7M | 0.03% | −2,705−3.5% | Reduced |
| Brown Advisory Inc | 77,398 | $23.3M | 0.04% | −56,555−42.2% | Reduced |
| Jones Financial Companies LLLP | 80,491 | $23.5M | 0.01% | +6,848+9.3% | Added |
| NEOS Investment Management LLC | 78,274 | $23.6M | 0.09% | +9,401+13.6% | Added |
| Caisse de Depot Et Placement du Quebec | 85,748 | $25.8M | 0.04% | +83,760+4,213.3% | Added |
| Nomura Asset Management Co Ltd | 88,844 | $26.7M | 0.06% | −4,381−4.7% | Reduced |
| Balyasny Asset Management LLC | 89,510 | $26.9M | 0.05% | +89,510 | New |
| FIL Ltd | 92,038 | $27.7M | 0.02% | +539+0.6% | Added |
| Tremblant Capital Group | 92,940 | $28.0M | 0.80% | −1,616−1.7% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 93,646 | $28.2M | 0.06% | +20,869+28.7% | Added |
| Standard Life Aberdeen plc | 94,450 | $28.4M | 0.04% | −43,881−31.7% | Reduced |
| Schroder Investment Management Group | 95,194 | $28.7M | 0.02% | +28,532+42.8% | Added |
| Prosight Management, LP | 98,080 | $29.5M | 5.09% | +22,080+29.1% | Added |
| Bridgewater Associates, LP | 99,584 | $30.0M | 0.12% | −7,008−6.6% | Reduced |
| HighTower Advisors, LLC | 105,045 | $31.6M | 0.03% | −814−0.8% | Reduced |
| Handelsbanken Fonder AB | 107,255 | $32.3M | 0.09% | −29,207−21.4% | Reduced |
| Longaeva Partners L.P. | 110,261 | $33.2M | 0.96% | +110,261 | New |
| State Board of Administration of Florida Retirement System | 112,184 | $33.8M | 0.06% | −534−0.5% | Reduced |
| Davern Capital Partners, LP | 113,085 | $34.0M | 5.80% | +113,085 | New |
| Aviva PLC | 114,532 | $34.5M | 0.05% | +529+0.5% | Added |
| HSBC Holdings PLC | 115,279 | $34.6M | 0.02% | +25,660+28.6% | Added |
| SCS Capital Management LLC | 115,549 | $34.8M | 0.33% | −33,998−22.7% | Reduced |
| Voya Investment Management LLC | 121,903 | $36.7M | 0.03% | −26,585−17.9% | Reduced |
| SEI Investments Co | 121,960 | $36.7M | 0.03% | +21,645+21.6% | Added |
| DekaBank Deutsche Girozentrale | 113,193 | $37.3M | 0.06% | 00.0% | Unchanged |
| ProShare Advisors LLC | 128,514 | $38.7M | 0.06% | −45,499−26.1% | Reduced |
| LMR Partners LLP | 134,214 | $40.4M | 0.30% | +59,553+79.8% | Added |