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 |
|---|---|---|---|---|---|
| Shepherd Financial Partners LLC | 2,736 | $1.25M | 0.12% | 00.0% | Unchanged |
| Greenleaf Trust | 2,735 | $1.25M | 0.01% | +5+0.2% | Added |
| Park Avenue Securities LLC | 2,731 | $1.25M | 0.01% | +646+31.0% | Added |
| Western Financial Corp | 2,724 | $1.24M | 0.54% | +2,724 | New |
| FORA Capital, LLC | 2,719 | $1.24M | 0.22% | +2,719 | New |
| Regal Investment Advisors LLC | 2,702 | $1.23M | 0.08% | −204−7.0% | Reduced |
| Central Pacific Bank - Trust Division | 2,635 | $1.20M | 0.15% | −383−12.7% | Reduced |
| Everhart Financial Group, Inc. | 2,630 | $1.20M | 0.12% | +437+19.9% | Added |
| Y-Intercept (Hong Kong) Ltd | 2,614 | $1.19M | 0.03% | +2,614 | New |
| Kovitz Investment Group Partners, LLC | 2,607 | $1.19M | 0.00% | +257+10.9% | Added |
| NEOS Investment Management LLC | 2,563 | $1.17M | 0.01% | −2,738−51.7% | Reduced |
| Tema ETFs LLC | 2,563 | $1.17M | 0.10% | −2,738−51.7% | Reduced |
| Vestcor Inc | 2,527 | $1.15M | 0.03% | −309−10.9% | Reduced |
| Horizon Kinetics Asset Management LLC | 2,480 | $1.13M | 0.01% | −279−10.1% | Reduced |
| Principal Securities, Inc. | 2,438 | $1.11M | 0.02% | +724+42.2% | Added |
| QRG Capital Management, Inc. | 2,435 | $1.11M | 0.01% | +299+14.0% | Added |
| Nixon Peabody Trust Co | 2,347 | $1.07M | 0.08% | +10+0.4% | Added |
| Persistent Asset Partners Ltd | 2,252 | $1.03M | 0.74% | +2,252 | New |
| Anchor Investment Management, LLC | 2,249 | $1.03M | 0.08% | +2,049+1,024.5% | Added |
| UniSuper Management Pty Ltd | 2,200 | $1.00M | 0.01% | 00.0% | Unchanged |
| Ethic Inc. | 2,184 | $996.0K | 0.02% | +8+0.4% | Added |
| United Capital Financial Advisers, LLC | 2,145 | $978.1K | 0.01% | +570+36.2% | Added |
| Aristeia Capital LLC | 2,100 | $957.6K | 0.03% | +2,100 | New |
| Whitebox Advisors LLC | 2,100 | $957.6K | 0.02% | +2,100 | New |
| Exchange Traded Concepts, LLC | 2,073 | $945.3K | 0.01% | −733−26.1% | Reduced |
| Pinkerton Retirement Specialists, LLC | 2,049 | $934.3K | 0.10% | +2,049 | New |
| Bannerman Wealth Management Group, LLC | 2,047 | $933.4K | 0.69% | −117−5.4% | Reduced |
| Archford Capital Strategies, LLC | 2,024 | $922.9K | 0.11% | +7+0.3% | Added |
| Harvest Fund Management Co., Ltd | 2,021 | $920.0K | 0.04% | +896+79.6% | Added |
| CSS LLC | 2,010 | $916.6K | 0.05% | +2,010 | New |
| Security National Bank of So Dak | 2,000 | $912.0K | 0.46% | 00.0% | Unchanged |
| Signaturefd, LLC | 1,998 | $911.2K | 0.01% | +92+4.8% | Added |
| Fred Alger Management, LLC | 1,986 | $905.6K | 0.00% | +1,986 | New |
| Greenland Capital Management LP | 1,959 | $893.3K | 0.13% | +959+95.9% | Added |
| Meeder Advisory Services, Inc. | 1,889 | $861.4K | 0.04% | +764+67.9% | Added |
| Siemens Fonds Invest GmbH | 1,837 | $837.7K | 0.05% | −6−0.3% | Reduced |
| Financiere des Professionnels - Fonds d,investissement inc. | 1,804 | $822.6K | 0.05% | +1,804 | New |
| Two Sigma Securities, LLC | 1,740 | $793.4K | 0.12% | +1,740 | New |
| Nomura Holdings Inc | 1,726 | $787.1K | 0.00% | +1,726 | New |
| Oppenheimer & Co Inc | 1,716 | $782.5K | 0.01% | 00.0% | Unchanged |
| Fort Sheridan Advisors LLC | 1,701 | $775.7K | 0.10% | 00.0% | Unchanged |
| Emerald Advisers, LLC | 1,695 | $772.9K | 0.02% | −246−12.7% | Reduced |
| Caerus Investment Advisors, LLC | 1,672 | $762.4K | 0.31% | +1,672 | New |
| Ballentine Partners, LLC | 1,661 | $757.4K | 0.01% | +44+2.7% | Added |
| R Squared Ltd | 1,660 | $757.0K | 0.33% | +1,660 | New |
| Yousif Capital Management, LLC | 1,647 | $751.0K | 0.01% | +80+5.1% | Added |
| iA Global Asset Management Inc. | 1,647 | $751.0K | 0.01% | +1,647 | New |
| Kestra Advisory Services, LLC | 1,645 | $750.1K | 0.00% | +561+51.8% | Added |
| Sava Infond d.o.o. | 1,640 | $747.8K | 0.11% | −540−24.8% | Reduced |
| Coldstream Capital Management Inc | 1,640 | $747.8K | 0.01% | +38+2.4% | Added |
| GraniteShares Advisors LLC | 1,639 | $747.4K | 0.43% | −260−13.7% | Reduced |
| Steel Peak Wealth Management LLC | 1,635 | $745.4K | 0.03% | −1,173−41.8% | Reduced |
| New York Life Investment Management LLC | 1,629 | $742.8K | 0.01% | −474−22.5% | Reduced |
| NorthCrest Asset Manangement, LLC | 1,605 | $737.5K | 0.02% | +1,605 | New |
| Walleye Trading LLC | 1,595 | $727.3K | 0.01% | +1,252+365.0% | Added |
| S-Bank Fund Management Ltd | 1,593 | $726.4K | 0.10% | −21−1.3% | Reduced |
| Diversified Trust Co | 1,570 | $715.9K | 0.01% | +472+43.0% | Added |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 1,533 | $711.3K | 0.01% | 00.0% | Unchanged |
| Forum Financial Management, LP | 1,556 | $709.5K | 0.01% | 00.0% | Unchanged |
| Ossiam | 1,556 | $709.5K | 0.01% | +201+14.8% | Added |
| Fulton Bank, N.A. | 1,544 | $704.1K | 0.02% | +123+8.7% | Added |
| Orser Capital Management, LLC | 1,544 | $704.1K | 0.39% | +1,544 | New |
| Tower Research Capital LLC (TRC) | 1,537 | $700.9K | 0.02% | +1,473+2,301.6% | Added |
| GWM Advisors LLC | 1,524 | $694.7K | 0.00% | +820+116.5% | Added |
| High Net Worth Advisory Group LLC | 1,500 | $684.0K | 0.16% | 00.0% | Unchanged |
| CTC Alternative Strategies, Ltd. | 1,496 | $682.2K | 1.14% | +1,496 | New |
| HB Wealth Management, LLC | 1,476 | $673.1K | 0.00% | +607+69.9% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 1,474 | $672.6K | 0.10% | +656+80.2% | Added |
| Qtron Investments LLC | 1,471 | $670.8K | 0.08% | +1,471 | New |
| Fox Run Management, L.L.C. | 1,465 | $668.0K | 0.10% | +202+16.0% | Added |
| Virtus Investment Advisers, Inc. | 1,459 | $665.3K | 0.19% | 00.0% | Unchanged |
| Sara-Bay Financial | 1,450 | $661.2K | 0.18% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 1,443 | $658.0K | 0.00% | +86+6.3% | Added |
| Souders Financial Advisors | 1,423 | $648.9K | 0.08% | +64+4.7% | Added |
| Private Advisory Group LLC | 1,419 | $647.1K | 0.06% | +1,419 | New |
| Lecap Asset Management Ltd | 1,418 | $646.6K | 0.22% | −567−28.6% | Reduced |
| Freestone Grove Partners LP | 1,412 | $643.9K | 0.00% | +1,412 | New |
| Norden Group LLC | 1,411 | $643.4K | 0.07% | +1,411 | New |
| J.Safra Asset Management Corp | 1,395 | $636.1K | 0.04% | +1,352+3,144.2% | Added |
| Banque Pictet & Cie SA | 1,385 | $631.6K | 0.01% | −6−0.4% | Reduced |
| Westpac Banking Corp | 1,355 | $617.9K | 0.04% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 1,352 | $616.4K | 0.01% | +1,352 | New |
| Winslow Capital Management, LLC | 1,335 | $608.8K | 0.00% | −1,176,104−99.9% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 1,327 | $605.1K | 0.00% | +163+14.0% | Added |
| Abn Amro Investment Solutions | 1,310 | $597.4K | 0.01% | 00.0% | Unchanged |
| Convergence Investment Partners, LLC | 1,307 | $596.0K | 0.13% | −952−42.1% | Reduced |
| North Star Asset Management Inc | 1,305 | $595.1K | 0.02% | 00.0% | Unchanged |
| Quantedge Capital Pte Ltd | 1,300 | $592.8K | 0.32% | +1,300 | New |
| Allworth Financial LP | 1,290 | $588.1K | 0.00% | +599+86.7% | Added |
| Sagespring Wealth Partners, LLC | 1,287 | $587.0K | 0.01% | +371+40.5% | Added |
| Wetherby Asset Management Inc | 1,266 | $577.3K | 0.02% | +40+3.3% | Added |
| Qsemble Capital Management, LP | 1,255 | $572.3K | 0.06% | −275−18.0% | Reduced |
| Frank, Rimerman Advisors LLC | 1,251 | $570.5K | 0.04% | +24+2.0% | Added |
| Crowley Wealth Management, Inc. | 1,250 | $570.0K | 0.45% | 00.0% | Unchanged |
| DeepCurrents Investment Group LLC | 1,243 | $566.8K | 0.02% | +1,243 | New |
| Essential Partners LLC | 1,236 | $563.6K | 0.19% | +1,174+1,893.5% | Added |
| Vinva Investment Management Ltd | 1,258 | $562.9K | 0.01% | +1,258 | New |
| Semanteon Capital Management, LP | 1,232 | $561.8K | 0.70% | +1,232 | New |
| HBK Investments L P | 1,231 | $561.3K | 0.01% | +1,231 | New |
| Capstone Investment Advisors, LLC | 1,231 | $561.3K | 0.00% | +1,231 | New |