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 |
|---|---|---|---|---|---|
| HSBC Holdings PLC | 115,279 | $34.6M | 0.02% | +25,660+28.6% | Added |
| Aviva PLC | 114,532 | $34.5M | 0.05% | +529+0.5% | Added |
| Davern Capital Partners, LP | 113,085 | $34.0M | 5.80% | +113,085 | New |
| State Board of Administration of Florida Retirement System | 112,184 | $33.8M | 0.06% | −534−0.5% | Reduced |
| Longaeva Partners L.P. | 110,261 | $33.2M | 0.96% | +110,261 | New |
| Handelsbanken Fonder AB | 107,255 | $32.3M | 0.09% | −29,207−21.4% | Reduced |
| HighTower Advisors, LLC | 105,045 | $31.6M | 0.03% | −814−0.8% | Reduced |
| Bridgewater Associates, LP | 99,584 | $30.0M | 0.12% | −7,008−6.6% | Reduced |
| Prosight Management, LP | 98,080 | $29.5M | 5.09% | +22,080+29.1% | Added |
| Schroder Investment Management Group | 95,194 | $28.7M | 0.02% | +28,532+42.8% | Added |
| Standard Life Aberdeen plc | 94,450 | $28.4M | 0.04% | −43,881−31.7% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 93,646 | $28.2M | 0.06% | +20,869+28.7% | Added |
| Tremblant Capital Group | 92,940 | $28.0M | 0.80% | −1,616−1.7% | Reduced |
| FIL Ltd | 92,038 | $27.7M | 0.02% | +539+0.6% | Added |
| Balyasny Asset Management LLC | 89,510 | $26.9M | 0.05% | +89,510 | New |
| Nomura Asset Management Co Ltd | 88,844 | $26.7M | 0.06% | −4,381−4.7% | Reduced |
| Caisse de Depot Et Placement du Quebec | 85,748 | $25.8M | 0.04% | +83,760+4,213.3% | Added |
| NEOS Investment Management LLC | 78,274 | $23.6M | 0.09% | +9,401+13.6% | Added |
| Jones Financial Companies LLLP | 80,491 | $23.5M | 0.01% | +6,848+9.3% | Added |
| Brown Advisory Inc | 77,398 | $23.3M | 0.04% | −56,555−42.2% | Reduced |
| Natixis Advisors, L.P. | 75,311 | $22.7M | 0.03% | −2,705−3.5% | Reduced |
| Casdin Capital, LLC | 75,000 | $22.6M | 1.13% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 70,171 | $21.1M | 0.04% | +1,288+1.9% | Added |
| Great West Life Assurance Co | 69,102 | $20.8M | 0.03% | +11,847+20.7% | Added |
| New York State Common Retirement Fund | 68,124 | $20.5M | 0.03% | +2,700+4.1% | Added |
| Deerfield Management Company, L.P. (Series C) | 67,935 | $20.5M | 0.21% | 00.0% | Unchanged |
| Vanguard Investments Australia, Ltd. | 67,644 | $20.4M | 0.05% | +1,834+2.8% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 66,985 | $20.2M | 0.10% | +18,280+37.5% | Added |
| Rock Springs Capital Management LP | 66,750 | $20.1M | 0.98% | −7,250−9.8% | Reduced |
| Polymer Capital Management (HK) LTD | 64,957 | $19.6M | 1.99% | +7,173+12.4% | Added |
| Danske Bank A/S | 64,555 | $19.4M | 0.04% | −1,400−2.1% | Reduced |
| Vanguard Global Advisers, LLC | 64,254 | $19.3M | 0.01% | −1,136−1.7% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 63,265 | $19.0M | 0.02% | −18,060−22.2% | Reduced |
| Worldquant Millennium Advisors LLC | 62,180 | $18.7M | 0.06% | +20,020+47.5% | Added |
| Neuberger Berman Group LLC | 62,019 | $18.7M | 0.01% | −31,477−33.7% | Reduced |
| Swedbank AB | 61,894 | $18.6M | 0.02% | −321−0.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 61,531 | $18.5M | 0.04% | +5,140+9.1% | Added |
| Jacobs Levy Equity Management, Inc | 60,986 | $18.4M | 0.07% | −151,218−71.3% | Reduced |
| Asset Management One Co.,Ltd. | 60,096 | $18.1M | 0.05% | +2,387+4.1% | Added |
| Van Eck Associates Corp | 58,666 | $17.7M | 0.01% | +4,529+8.4% | Added |
| Capital International Sarl | 58,080 | $17.5M | 0.25% | +4,731+8.9% | Added |
| LPL Financial LLC | 57,890 | $17.4M | 0.00% | −9,747−14.4% | Reduced |
| Storebrand Asset Management AS | 57,580 | $17.3M | 0.04% | −7,015−10.9% | Reduced |
| Treasurer of the State of North Carolina | 56,779 | $17.1M | 0.04% | +2,510+4.6% | Added |
| KLP Kapitalforvaltning AS | 56,760 | $17.1M | 0.06% | +5,560+10.9% | Added |
| Andra AP-fonden | 56,017 | $16.9M | 0.19% | −30,680−35.4% | Reduced |
| Jain Global LLC | 55,686 | $16.8M | 0.20% | +7,724+16.1% | Added |
| Rafferty Asset Management, LLC | 55,332 | $16.7M | 0.04% | +4,779+9.5% | Added |
| DnB Asset Management AS | 54,076 | $16.3M | 0.05% | +22,649+72.1% | Added |
| National Bank of Canada | 52,467 | $15.8M | 0.01% | −11,140−17.5% | Reduced |
| Parkman Healthcare Partners LLC | 50,672 | $15.3M | 1.57% | +23,756+88.3% | Added |
| Alliancebernstein L.P. | 46,050 | $15.2M | 0.01% | +1,409+3.2% | Added |
| SEB Asset Management AB | 50,504 | $15.2M | 0.06% | +20,351+67.5% | Added |
| Arrowstreet Capital, Limited Partnership | 49,601 | $14.9M | 0.01% | +49,601 | New |
| Trexquant Investment LP | 48,197 | $14.5M | 0.09% | −13,563−22.0% | Reduced |
| Ensign Peak Advisors, Inc | 47,829 | $14.4M | 0.02% | −21,818−31.3% | Reduced |
| Investment Management Corp of Ontario | 46,155 | $13.9M | 0.18% | −1,000−2.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 45,536 | $13.7M | 0.03% | −29,384−39.2% | Reduced |
| Advisor Group Holdings, Inc. | 45,298 | $13.6M | 0.02% | −1,355−2.9% | Reduced |
| Mediolanum International Funds Ltd | 46,396 | $13.6M | 0.12% | +1,277+2.8% | Added |
| Mackenzie Financial Corp | 43,988 | $13.2M | 0.01% | +21,481+95.4% | Added |
| Nykredit A/S | 43,641 | $13.1M | 0.05% | +43,641 | New |
| State of New Jersey Common Pension Fund D | 42,883 | $12.9M | 0.04% | −2,268−5.0% | Reduced |
| Driehaus Capital Management LLC | 42,746 | $12.9M | 0.07% | −16,876−28.3% | Reduced |
| Gotham Asset Management, LLC | 42,051 | $12.7M | 0.03% | −1,659−3.8% | Reduced |
| Sierra Summit Advisors LLC | 41,684 | $12.5M | 1.40% | +11,386+37.6% | Added |
| Entropy Technologies, LP | 41,204 | $12.4M | 0.49% | +5,485+15.4% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 41,157 | $12.4M | 0.06% | −733−1.7% | Reduced |
| Allianz Asset Management GmbH | 40,413 | $12.2M | 0.01% | −7,249−15.2% | Reduced |
| Resona Asset Management Co.,Ltd. | 40,053 | $12.0M | 0.06% | +221+0.6% | Added |
| Nissay Asset Management Corp | 39,482 | $11.9M | 0.05% | +2,584+7.0% | Added |
| Guggenheim Capital LLC | 39,318 | $11.8M | 0.08% | +2,204+5.9% | Added |
| Mn Services Vermogensbeheer B.V. | 38,700 | $11.7M | 0.09% | +38,700 | New |
| J. Goldman & Co LP | 38,698 | $11.6M | 0.41% | +38,698 | New |
| Arizona State Retirement System | 38,025 | $11.4M | 0.06% | +2,126+5.9% | Added |
| Public Employees Retirement System of Ohio | 37,998 | $11.4M | 0.03% | −6,024−13.7% | Reduced |
| Tredje AP-fonden | 37,206 | $11.2M | 0.05% | −12,388−25.0% | Reduced |
| Quantinno Capital Management LP | 37,108 | $11.2M | 0.01% | +3,258+9.6% | Added |
| Intech Investment Management LLC | 36,760 | $11.1M | 0.10% | −31,249−45.9% | Reduced |
| M&G Plc | 35,912 | $10.8M | 0.05% | −1,744−4.6% | Reduced |
| Stifel Financial Corp | 35,810 | $10.8M | 0.01% | −14,144−28.3% | Reduced |
| Erste Asset Management GmbH | 36,719 | $10.8M | 0.08% | +409+1.1% | Added |
| Bronte Capital Management Pty Ltd. | 35,384 | $10.7M | 1.20% | −1,861−5.0% | Reduced |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 35,077 | $10.6M | 0.32% | −1,948−5.3% | Reduced |
| 683 Capital Management, LLC | 35,000 | $10.5M | 0.97% | +14,000+66.7% | Added |
| USS Investment Management Ltd | 34,492 | $10.4M | 0.04% | +7,644+28.5% | Added |
| Groupama Asset Managment | 34,252 | $10.3M | 0.13% | −2,515−6.8% | Reduced |
| Toroso Investments, LLC | 33,541 | $10.1M | 0.02% | −24,386−42.1% | Reduced |
| Engineers Gate Manager LP | 33,469 | $10.1M | 0.13% | +967+3.0% | Added |
| STRS Ohio | 33,364 | $10.0M | 0.04% | −2,168−6.1% | Reduced |
| Ofi Invest Asset Management | 37,945 | $9.99M | 0.10% | +37,216+5,105.1% | Added |
| Soleus Capital Management, L.P. | 33,050 | $9.95M | 0.34% | −98,600−74.9% | Reduced |
| Bank of Montreal | 32,834 | $9.88M | 0.00% | +970+3.0% | Added |
| Rosenblum Silverman Sutton S F Inc | 32,172 | $9.68M | 2.33% | −755−2.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 31,112 | $9.37M | 0.05% | −40,655−56.6% | Reduced |
| Teachers Retirement System of the State of Kentucky | 30,696 | $9.24M | 0.06% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 30,675 | $9.23M | 0.01% | −4,106−11.8% | Reduced |
| Lazard Asset Management LLC | 30,323 | $9.13M | 0.01% | +14,043+86.3% | Added |
| Xponance, Inc. | 30,242 | $9.10M | 0.06% | +371+1.2% | Added |
| GF Fund Management Co. Ltd. | 29,770 | $8.96M | 0.11% | −271−0.9% | Reduced |