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 2025
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Jun 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
- 653
- +35 vs. Q1 2025
- Shares held
- 132.1M
- +2.77M (+2.1%) vs. Q1 2025
- Total value
- $43.1B
- +$8.27B (+23.8%) vs. Q1 2025
- New holders
- 98
- 262 more added
- Sold out
- 63
- 214 more reduced
7 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Arizona State Retirement System | 37,928 | $12.4M | 0.07% | +680+1.8% | Added |
| Walleye Capital LLC | 38,715 | $12.6M | 0.12% | +36,345+1,533.5% | Added |
| Public Employees Retirement System of Ohio | 38,752 | $12.6M | 0.04% | −917−2.3% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 40,231 | $13.1M | 0.08% | −2,072−4.9% | Reduced |
| CI Private Wealth, LLC | 42,152 | $13.7M | 0.02% | −513−1.2% | Reduced |
| Resona Asset Management Co.,Ltd. | 43,700 | $14.2M | 0.07% | +4,780+12.3% | Added |
| State of New Jersey Common Pension Fund D | 43,859 | $14.3M | 0.06% | +114+0.3% | Added |
| Storebrand Asset Management AS | 44,321 | $14.5M | 0.04% | −726−1.6% | Reduced |
| Eagle Health Investments LP | 46,086 | $15.0M | 3.71% | −19,570−29.8% | Reduced |
| KLP Kapitalforvaltning AS | 49,100 | $16.0M | 0.07% | +5,400+12.4% | Added |
| Principal Financial Group Inc | 50,534 | $16.5M | 0.01% | +15,833+45.6% | Added |
| Rhenman & Partners Asset Management AB | 51,197 | $16.7M | 2.11% | +3,000+6.2% | Added |
| U.S. Capital Wealth Advisors, LLC | 52,027 | $17.0M | 0.50% | −3,984−7.1% | Reduced |
| Groupama Asset Managment | 48,385 | $17.6M | 0.29% | +8,246+20.5% | Added |
| Van Eck Associates Corp | 54,560 | $17.8M | 0.02% | −9,584−14.9% | Reduced |
| Integral Health Asset Management, LLC | 55,000 | $17.9M | 1.68% | +5,000+10.0% | Added |
| Danske Bank A/S | 55,007 | $17.9M | 0.04% | +1,802+3.4% | Added |
| Ikarian Capital, LLC | 56,594 | $18.5M | 6.11% | +25,000+79.1% | Added |
| Cercano Management LLC | 56,953 | $18.6M | 0.53% | +36,181+174.2% | Added |
| Treasurer of the State of North Carolina | 58,304 | $19.0M | 0.06% | −651−1.1% | Reduced |
| Schonfeld Strategic Advisors LLC | 58,757 | $19.2M | 0.14% | +55,675+1,806.5% | Added |
| New York State Common Retirement Fund | 63,272 | $20.6M | 0.03% | −1,000−1.6% | Reduced |
| Swedbank AB | 64,315 | $21.0M | 0.02% | +64,315 | New |
| Alliancebernstein L.P. | 67,131 | $21.9M | 0.01% | +22,294+49.7% | Added |
| Los Angeles Capital Management LLC | 67,399 | $22.0M | 0.08% | −13,463−16.6% | Reduced |
| Zurich Insurance Group Ltd | 67,794 | $22.1M | 0.17% | +67,794 | New |
| Asset Management One Co.,Ltd. | 69,310 | $22.6M | 0.07% | +853+1.2% | Added |
| Capital International Inc | 71,831 | $23.4M | 0.23% | +4,870+7.3% | Added |
| PFM Health Sciences, LP | 72,220 | $23.6M | 2.04% | −14,925−17.1% | Reduced |
| Palo Alto Investors LP | 75,535 | $24.6M | 5.24% | −7,953−9.5% | Reduced |
| State of Wisconsin Investment Board | 78,106 | $25.5M | 0.06% | +4,951+6.8% | Added |
| Driehaus Capital Management LLC | 79,714 | $26.0M | 0.21% | +22,586+39.5% | Added |
| Casdin Capital, LLC | 81,500 | $26.6M | 2.42% | −38,500−32.1% | Reduced |
| HSBC Holdings PLC | 81,748 | $26.6M | 0.02% | +20,483+33.4% | Added |
| AXA S.A. | 82,480 | $26.9M | 0.08% | −6,172−7.0% | Reduced |
| Capital International Ltd | 82,800 | $27.0M | 1.03% | +894+1.1% | Added |
| Prudential Financial Inc | 83,922 | $27.4M | 0.04% | −88,084−51.2% | Reduced |
| Adage Capital Partners GP, L.L.C. | 84,390 | $27.5M | 0.05% | −197,794−70.1% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 84,888 | $27.7M | 0.12% | −1,236−1.4% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 85,734 | $28.0M | 0.06% | −24,931−22.5% | Reduced |
| Manufacturers Life Insurance Company, The | 86,840 | $28.3M | 0.03% | −12,029−12.2% | Reduced |
| Tri Locum Partners LP | 89,525 | $29.2M | 8.86% | +89,525 | New |
| Millennium Management LLC | 90,445 | $29.5M | 0.03% | −196,892−68.5% | Reduced |
| Great West Life Assurance Co | 91,154 | $29.7M | 0.05% | +7,326+8.7% | Added |
| Nomura Asset Management Co Ltd | 91,374 | $29.8M | 0.08% | +4,531+5.2% | Added |
| Parkman Healthcare Partners LLC | 92,338 | $30.1M | 3.48% | +23,400+33.9% | Added |
| Panagora Asset Management Inc | 92,499 | $30.2M | 0.14% | −4,305−4.4% | Reduced |
| Russell Investments Group, Ltd. | 93,435 | $30.4M | 0.04% | −35,761−27.7% | Reduced |
| Barclays PLC | 94,058 | $30.7M | 0.01% | −1,661−1.7% | Reduced |
| Envestnet Asset Management Inc | 95,796 | $31.2M | 0.01% | +23,749+33.0% | Added |
| Robeco Institutional Asset Management B.V. | 96,368 | $31.4M | 0.05% | −7,113−6.9% | Reduced |
| Aviva PLC | 97,065 | $31.7M | 0.07% | +7,012+7.8% | Added |
| Neuberger Berman Group LLC | 99,044 | $32.3M | 0.02% | +605+0.6% | Added |
| Rock Springs Capital Management LP | 100,000 | $32.6M | 2.03% | −43,250−30.2% | Reduced |
| Ensign Peak Advisors, Inc | 100,209 | $32.7M | 0.06% | +19,730+24.5% | Added |
| Frontier Capital Management Co LLC | 103,003 | $33.6M | 0.31% | +583+0.6% | Added |
| Soleus Capital Management, L.P. | 106,750 | $34.8M | 2.40% | +106,750 | New |
| D. E. Shaw & Co., Inc. | 108,276 | $35.3M | 0.04% | −181,586−62.6% | Reduced |
| HighTower Advisors, LLC | 109,265 | $35.6M | 0.04% | −4,592−4.0% | Reduced |
| Korea Investment CORP | 110,855 | $36.1M | 0.08% | +5,096+4.8% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 111,785 | $36.5M | 0.03% | +5,906+5.6% | Added |
| DekaBank Deutsche Girozentrale | 113,193 | $36.5M | 0.07% | +151+0.1% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 114,366 | $37.3M | 0.07% | −3,354−2.8% | Reduced |
| Balyasny Asset Management LLC | 115,275 | $37.6M | 0.09% | +102,159+778.9% | Added |
| Worldquant Millennium Advisors LLC | 117,373 | $38.3M | 0.19% | −73,732−38.6% | Reduced |
| Antipodes Partners Ltd | 122,804 | $40.0M | 1.24% | −36,750−23.0% | Reduced |
| Eventide Asset Management, LLC | 125,902 | $41.1M | 0.72% | −40,548−24.4% | Reduced |
| State Board of Administration of Florida Retirement System | 127,050 | $41.4M | 0.07% | +1,810+1.4% | Added |
| Capital International Sarl | 128,286 | $41.8M | 0.80% | +7,126+5.9% | Added |
| BNP Paribas Arbitrage, SA | 128,634 | $41.9M | 0.03% | +86,059+202.1% | Added |
| Deerfield Management Company, L.P. (Series C) | 145,000 | $47.3M | 0.86% | 00.0% | Unchanged |
| FIL Ltd | 147,937 | $48.2M | 0.04% | +30,075+25.5% | Added |
| Janus Henderson Group PLC | 150,421 | $49.0M | 0.02% | −31,228−17.2% | Reduced |
| Handelsbanken Fonder AB | 155,362 | $50.7M | 0.18% | +38,679+33.1% | Added |
| Victory Capital Management Inc | 156,294 | $51.0M | 0.03% | +118,645+315.1% | Added |
| Arrowstreet Capital, Limited Partnership | 169,700 | $55.3M | 0.04% | +165,645+4,085.0% | Added |
| SCS Capital Management LLC | 170,662 | $55.7M | 0.62% | −415−0.2% | Reduced |
| National Pension Service | 175,046 | $57.1M | 0.05% | +1,387+0.8% | Added |
| Westfield Capital Management Co LP | 186,905 | $60.9M | 0.26% | −5,267−2.7% | Reduced |
| AQR Capital Management LLC | 188,249 | $61.3M | 0.05% | −640,095−77.3% | Reduced |
| KBC Group NV | 193,550 | $63.1M | 0.17% | +174,238+902.2% | Added |
| Ameriprise Financial Inc | 193,649 | $63.1M | 0.02% | +84,513+77.4% | Added |
| California State Teachers Retirement System | 199,316 | $65.0M | 0.07% | +1,873+0.9% | Added |
| Rhumbline Advisers | 200,485 | $65.4M | 0.06% | +19,022+10.5% | Added |
| Point72 Asset Management, L.P. | 201,396 | $65.7M | 0.16% | −99,239−33.0% | Reduced |
| Allianz Asset Management GmbH | 205,993 | $67.2M | 0.09% | −12,510−5.7% | Reduced |
| Susquehanna International Group, LLP | 208,262 | $67.9M | 0.10% | +137,797+195.6% | Added |
| Voya Investment Management LLC | 211,045 | $68.8M | 0.07% | +119,901+131.6% | Added |
| California Public Employees Retirement System | 211,581 | $69.0M | 0.04% | +10,100+5.0% | Added |
| Standard Life Aberdeen plc | 218,624 | $70.4M | 0.12% | +3,239+1.5% | Added |
| CIBC Private Wealth Group, LLC | 218,329 | $71.2M | 0.13% | +12,818+6.2% | Added |
| 1832 Asset Management L.P. | 223,345 | $72.8M | 0.13% | +79,300+55.1% | Added |
| Polar Capital Holdings Plc | 237,500 | $77.4M | 0.41% | −42,500−15.2% | Reduced |
| Candriam Luxembourg S.C.A. | 238,084 | $77.6M | 0.45% | −11,835−4.7% | Reduced |
| Marshall Wace, LLP | 238,573 | $77.8M | 0.09% | −30,359−11.3% | Reduced |
| Citigroup Inc | 248,238 | $80.9M | 0.06% | +53,504+27.5% | Added |
| First Trust Advisors LP | 251,817 | $82.1M | 0.07% | +71,357+39.5% | Added |
| Royal London Asset Management Ltd | 259,071 | $84.5M | 0.19% | −27,872−9.7% | Reduced |
| Two Sigma Advisers, LP | 266,100 | $86.8M | 0.18% | −9,700−3.5% | Reduced |
| Raymond James Financial Inc | 270,450 | $88.2M | 0.03% | +1,480+0.6% | Added |