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 |
|---|---|---|---|---|---|
| Toronto Dominion Bank | 21,227 | $9.68M | 0.02% | −2,404−10.2% | Reduced |
| Ilmarinen Mutual Pension Insurance Co | 21,000 | $9.58M | 0.07% | 00.0% | Unchanged |
| Andra AP-fonden | 20,700 | $9.44M | 0.12% | +13,800+200.0% | Added |
| Utah Retirement Systems | 20,599 | $9.39M | 0.09% | −371−1.8% | Reduced |
| Stifel Financial Corp | 20,295 | $9.25M | 0.01% | +6,595+48.1% | Added |
| Police & Firemen's Retirement System of New Jersey | 20,093 | $9.16M | 0.07% | +1,130+6.0% | Added |
| MML Investors Services, LLC | 19,678 | $8.97M | 0.02% | +1,840+10.3% | Added |
| Quantinno Capital Management LP | 19,265 | $8.79M | 0.02% | +5,801+43.1% | Added |
| Acadian Asset Management LLC | 19,083 | $8.70M | 0.02% | +11,364+147.2% | Added |
| British Columbia Investment Management Corp | 18,739 | $8.54M | 0.05% | −1,732−8.5% | Reduced |
| Elo Mutual Pension Insurance Co | 17,865 | $8.15M | 0.13% | +3,738+26.5% | Added |
| Caisse de Depot Et Placement du Quebec | 17,826 | $8.13M | 0.01% | −2,218−11.1% | Reduced |
| Silvant Capital Management LLC | 17,676 | $8.06M | 0.28% | −1,671−8.6% | Reduced |
| Entropy Technologies, LP | 17,181 | $7.83M | 0.59% | +16,081+1,461.9% | Added |
| Rafferty Asset Management, LLC | 17,151 | $7.82M | 0.03% | −15,045−46.7% | Reduced |
| Verition Fund Management LLC | 17,033 | $7.77M | 0.04% | +11,330+198.7% | Added |
| Capital Group Investment Management Pte. Ltd. | 16,863 | $7.69M | 1.29% | −875−4.9% | Reduced |
| Nissay Asset Management Corp | 16,575 | $7.56M | 0.04% | +287+1.8% | Added |
| Jefferies Financial Group Inc. | 16,542 | $7.54M | 0.07% | +8,200+98.3% | Added |
| EFG Asset Management (North America) Corp. | 16,335 | $7.44M | 0.96% | −4,827−22.8% | Reduced |
| Twin Tree Management, LP | 16,005 | $7.30M | 0.34% | +16,005 | New |
| Quantessence Capital LLC | 15,874 | $7.24M | 2.29% | +15,874 | New |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 15,826 | $7.22M | 0.06% | +1,018+6.9% | Added |
| Daiwa Securities Group Inc. | 15,496 | $7.07M | 0.02% | +2,555+19.7% | Added |
| Mutual of America Capital Management LLC | 15,307 | $6.98M | 0.07% | −639−4.0% | Reduced |
| Soleus Capital Management, L.P. | 15,250 | $6.95M | 0.37% | −91,500−85.7% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 14,525 | $6.68M | 0.01% | +9,407+183.8% | Added |
| Federation des caisses Desjardins du Quebec | 14,627 | $6.67M | 0.03% | +7,078+93.8% | Added |
| Cetera Investment Advisers | 14,523 | $6.62M | 0.01% | +4,635+46.9% | Added |
| Rakuten Investment Management, Inc. | 31,152 | $6.58M | 0.03% | +31,152 | New |
| OP Asset Management Ltd | 14,386 | $6.56M | 0.09% | +452+3.2% | Added |
| Linden Advisors LP | 14,364 | $6.55M | 0.04% | +14,364 | New |
| JustInvest LLC | 13,985 | $6.38M | 0.07% | +595+4.4% | Added |
| Aware Super Pty Ltd as trustee of Aware Super | 13,665 | $6.23M | 0.09% | 00.0% | Unchanged |
| Tredje AP-fonden | 13,456 | $6.14M | 0.05% | +1,254+10.3% | Added |
| Wealthfront Advisers LLC | 13,420 | $6.12M | 0.01% | +1,336+11.1% | Added |
| Hantz Financial Services, Inc. | 13,146 | $6.00M | 0.09% | +12,767+3,368.6% | Added |
| The PNC Financial Services Group, Inc. | 13,115 | $5.98M | 0.00% | −55−0.4% | Reduced |
| Holocene Advisors, LP | 13,086 | $5.97M | 0.01% | −583,730−97.8% | Reduced |
| SRS Capital Advisors, Inc. | 13,085 | $5.97M | 0.09% | +12,935+8,623.3% | Added |
| Campbell & CO Investment Adviser LLC | 12,697 | $5.79M | 0.44% | +12,697 | New |
| Fieldview Capital Management, LLC | 12,658 | $5.77M | 0.94% | +12,658 | New |
| Public Employees Retirement Association of Colorado | 12,445 | $5.67M | 0.02% | −396−3.1% | Reduced |
| Trexquant Investment LP | 12,396 | $5.65M | 0.06% | −8,147−39.7% | Reduced |
| Nordea Investment Management AB | 12,481 | $5.65M | 0.00% | +1,186+10.5% | Added |
| Credit Agricole S A | 12,367 | $5.64M | 0.02% | +12,367 | New |
| Nisa Investment Advisors, LLC | 12,133 | $5.53M | 0.02% | +3,891+47.2% | Added |
| CIBC World Markets Inc. | 12,116 | $5.52M | 0.01% | +12,116 | New |
| Assetmark, Inc | 11,918 | $5.43M | 0.01% | +375+3.2% | Added |
| Zacks Investment Management | 11,904 | $5.43M | 0.04% | −27−0.2% | Reduced |
| Comerica Bank | 11,790 | $5.38M | 0.02% | −6,827−36.7% | Reduced |
| Alberta Investment Management Corp | 11,700 | $5.34M | 0.04% | +11,700 | New |
| Liontrust Investment Partners LLP | 11,656 | $5.32M | 0.08% | −1,113−8.7% | Reduced |
| Virtu Financial LLC | 11,656 | $5.32M | 0.30% | +11,656 | New |
| Dark Forest Capital Management LP | 11,598 | $5.29M | 0.20% | +11,598 | New |
| Mercer Global Advisors Inc | 11,484 | $5.24M | 0.01% | +8,921+348.1% | Added |
| Raiffeisen Bank International AG | 11,609 | $5.19M | 0.07% | +2,705+30.4% | Added |
| Cullen/Frost Bankers, Inc. | 11,043 | $5.04M | 0.06% | +248+2.3% | Added |
| Traynor Capital Management, Inc. | 10,873 | $4.96M | 0.28% | +668+6.5% | Added |
| Silvercrest Asset Management Group LLC | 10,807 | $4.93M | 0.03% | +556+5.4% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 10,671 | $4.86M | 0.01% | −887−7.7% | Reduced |
| Schroder Investment Management Group | 10,818 | $4.84M | 0.00% | +2,238+26.1% | Added |
| Balyasny Asset Management LLC | 10,260 | $4.68M | 0.01% | −105,015−91.1% | Reduced |
| Blair William & Co | 10,244 | $4.67M | 0.01% | −348−3.3% | Reduced |
| Headlands Technologies LLC | 10,192 | $4.65M | 0.37% | +10,192 | New |
| Amalgamated Bank | 10,144 | $4.63M | 0.03% | +676+7.1% | Added |
| Himension Fund | 10,094 | $4.60M | 0.28% | −3,392−25.2% | Reduced |
| Diadema Partners LP | 10,000 | $4.56M | 3.18% | +10,000 | New |
| Bank of Montreal | 9,933 | $4.53M | 0.00% | −3,178−24.2% | Reduced |
| Employees Retirement System of Texas | 9,792 | $4.46M | 0.04% | +318+3.4% | Added |
| Mackenzie Financial Corp | 9,773 | $4.46M | 0.01% | +698+7.7% | Added |
| Lazard Asset Management LLC | 9,751 | $4.45M | 0.01% | +2,001+25.8% | Added |
| EFG Asset Management (Americas) Corp. | 9,738 | $4.44M | 0.77% | −1,877−16.2% | Reduced |
| Schonfeld Strategic Advisors LLC | 9,709 | $4.43M | 0.03% | −49,048−83.5% | Reduced |
| J. Safra Sarasin Holding AG | 9,522 | $4.34M | 0.07% | −5,474−36.5% | Reduced |
| Hudson Bay Capital Management LP | 9,411 | $4.29M | 0.03% | −5,937−38.7% | Reduced |
| Commonwealth Equity Services, LLC | 9,407 | $4.29M | 0.01% | −519−5.2% | Reduced |
| O'Shaughnessy Asset Management, LLC | 9,308 | $4.24M | 0.02% | +2,872+44.6% | Added |
| Prudential Financial Inc | 9,132 | $4.16M | 0.00% | −74,790−89.1% | Reduced |
| Motley Fool Asset Management LLC | 9,046 | $4.12M | 0.17% | +2,394+36.0% | Added |
| ASR Vermogensbeheer N.V. | 8,876 | $4.05M | 0.05% | −50−0.6% | Reduced |
| Guggenheim Capital LLC | 8,625 | $3.93M | 0.03% | −2,024−19.0% | Reduced |
| NWK Group, Inc. | 8,538 | $3.89M | 1.32% | +8,538 | New |
| Catalyst Funds Management Pty Ltd | 8,320 | $3.79M | 0.58% | −2,450−22.7% | Reduced |
| Genus Capital Management Inc. | 8,260 | $3.77M | 0.44% | +30+0.4% | Added |
| S&CO Inc | 8,200 | $3.74M | 0.23% | −1,850−18.4% | Reduced |
| La Banque Postale Asset Management SA | 8,184 | $3.73M | 0.05% | −138−1.7% | Reduced |
| St Germain D J Co Inc | 8,151 | $3.72M | 0.15% | −843−9.4% | Reduced |
| MetLife Investment Management | 7,992 | $3.64M | 0.02% | +231+3.0% | Added |
| Kentucky Retirement Systems | 7,836 | $3.57M | 0.10% | −417−5.1% | Reduced |
| Wolverine Asset Management LLC | 7,800 | $3.56M | 0.05% | +7,800 | New |
| Prudential PLC | 7,696 | $3.51M | 0.03% | +3,584+87.2% | Added |
| Captrust Financial Advisors | 7,669 | $3.50M | 0.01% | +4,163+118.7% | Added |
| NewEdge Wealth, LLC | 7,993 | $3.47M | 0.05% | +7,091+786.1% | Added |
| SummitTX Capital, L.P. | 7,525 | $3.43M | 0.14% | +2,725+56.8% | Added |
| Ci Investments Inc. | 7,224 | $3.29M | 0.01% | +3,109+75.6% | Added |
| J.P. Marvel Investment Advisors, LLC | 7,105 | $3.24M | 0.47% | +281+4.1% | Added |
| Advisory Services Network, LLC | 7,006 | $3.19M | 0.05% | +591+9.2% | Added |
| Toroso Investments, LLC | 6,891 | $3.14M | 0.01% | +1,317+23.6% | Added |
| Capula Management Ltd | 6,888 | $3.14M | 0.02% | +6,888 | New |