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, Q1 2026
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 31, 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
- 793
- −48 vs. Q4 2025
- Shares held
- 131.4M
- +14.7M (+12.6%) vs. Q4 2025
- Total value
- $43.4B
- −$2.95B (−6.4%) vs. Q4 2025
- New holders
- 106
- 323 more added
- Sold out
- 154
- 258 more reduced
11 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Zurich Insurance Group Ltd | 0 | $0 | 0.00% | −30,322−100.0% | Sold out |
| Mizuho Markets Cayman LP | 0 | $0 | 0.00% | −24,958−100.0% | Sold out |
| Banco Bilbao Vizcaya Argentaria, S.A. | 0 | $0 | 0.00% | −21,926−100.0% | Sold out |
| Avidity Partners Management LP | 0 | $0 | 0.00% | −21,000−100.0% | Sold out |
| Artia Global Partners LP | 0 | $0 | 0.00% | −17,400−100.0% | Sold out |
| MUFG Securities EMEA plc | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Alberta Investment Management Corp | 0 | $0 | 0.00% | −12,600−100.0% | Sold out |
| CIBC World Markets Inc. | 0 | $0 | 0.00% | −12,225−100.0% | Sold out |
| Kornitzer Capital Management Inc | 0 | $0 | 0.00% | −11,114−100.0% | Sold out |
| Atika Capital Management LLC | 0 | $0 | 0.00% | −10,339−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −9,490−100.0% | Sold out |
| Kentucky Retirement Systems | 0 | $0 | 0.00% | −7,836−100.0% | Sold out |
| Hussman Strategic Advisors, Inc. | 0 | $0 | 0.00% | −6,300−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −5,990−100.0% | Sold out |
| Diadema Partners LP | 0 | $0 | 0.00% | −5,341−100.0% | Sold out |
| Genus Capital Management Inc. | 0 | $0 | 0.00% | −5,255−100.0% | Sold out |
| West Michigan Advisors, LLC | 0 | $0 | 0.00% | −4,999−100.0% | Sold out |
| NLB Skladi, upravljanje premozenja, d.o.o. | 0 | $0 | 0.00% | −4,300−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −3,641−100.0% | Sold out |
| Bamco Inc | 0 | $0 | 0.00% | −3,500−100.0% | Sold out |
| J. Goldman & Co LP | 0 | $0 | 0.00% | −3,368−100.0% | Sold out |
| Polymer Capital Management (US) LLC | 0 | $0 | 0.00% | −3,070−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −3,026−100.0% | Sold out |
| Sivik Global Healthcare LLC | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −2,941−100.0% | Sold out |
| Fig Financial Advisory Services Inc | 0 | $0 | 0.00% | −2,845−100.0% | Sold out |
| Greenleaf Trust | 0 | $0 | 0.00% | −2,733−100.0% | Sold out |
| Mitsubishi UFJ Morgan Stanley Securities Co., Ltd. | 0 | $0 | 0.00% | −2,682−100.0% | Sold out |
| RMB Capital Management, LLC | 0 | $0 | 0.00% | −2,662−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −2,534−100.0% | Sold out |
| Inceptionr LLC | 0 | $0 | 0.00% | −2,415−100.0% | Sold out |
| Twin Capital Management Inc | 0 | $0 | 0.00% | −2,208−100.0% | Sold out |
| Sivia Capital Partners, LLC | 0 | $0 | 0.00% | −1,997−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −1,881−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −1,856−100.0% | Sold out |
| Sara-Bay Financial | 0 | $0 | 0.00% | −1,750−100.0% | Sold out |
| NorthCrest Asset Manangement, LLC | 0 | $0 | 0.00% | −1,733−100.0% | Sold out |
| Diversified Trust Co | 0 | $0 | 0.00% | −1,548−100.0% | Sold out |
| Forum Financial Management, LP | 0 | $0 | 0.00% | −1,546−100.0% | Sold out |
| Orser Capital Management, LLC | 0 | $0 | 0.00% | −1,539−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −1,527−100.0% | Sold out |
| Steel Peak Wealth Management LLC | 0 | $0 | 0.00% | −1,484−100.0% | Sold out |
| Summit Financial, LLC | 0 | $0 | 0.00% | −1,456−100.0% | Sold out |
| Persistent Asset Partners Ltd | 0 | $0 | 0.00% | −1,433−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −1,345−100.0% | Sold out |
| Winslow Capital Management, LLC | 0 | $0 | 0.00% | −1,266−100.0% | Sold out |
| Pinnacle Financial Partners, Inc. | 0 | $0 | 0.00% | −1,237−100.0% | Sold out |
| Bridges Investment Management Inc | 0 | $0 | 0.00% | −1,216−100.0% | Sold out |
| Caerus Investment Advisors, LLC | 0 | $0 | 0.00% | −1,173−100.0% | Sold out |
| Lecap Asset Management Ltd | 0 | $0 | 0.00% | −1,151−100.0% | Sold out |
| Hilltop Holdings Inc. | 0 | $0 | 0.00% | −1,139−100.0% | Sold out |
| Flow Traders U.S. LLC | 0 | $0 | 0.00% | −1,135−100.0% | Sold out |
| TB Alternative Assets Ltd. | 0 | $0 | 0.00% | −1,133−100.0% | Sold out |
| Banque Pictet & Cie SA | 0 | $0 | 0.00% | −1,120−100.0% | Sold out |
| Abel Hall, LLC | 0 | $0 | 0.00% | −1,111−100.0% | Sold out |
| Simplify Asset Management Inc. | 0 | $0 | 0.00% | −1,109−100.0% | Sold out |
| Capital Group Private Client Services, Inc. | 0 | $0 | 0.00% | −1,070−100.0% | Sold out |
| Elevate Capital Advisors, LLC | 0 | $0 | 0.00% | −1,039−100.0% | Sold out |
| Parcion Private Wealth LLC | 0 | $0 | 0.00% | −1,002−100.0% | Sold out |
| Calamos Advisors LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Oppenheimer & Co Inc | 0 | $0 | 0.00% | −966−100.0% | Sold out |
| Optimist Retirement Group LLC | 0 | $0 | 0.00% | −962−100.0% | Sold out |
| Cynosure Management, LLC | 0 | $0 | 0.00% | −950−100.0% | Sold out |
| Picton Mahoney Asset Management | 0 | $0 | 0.00% | −932−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −928−100.0% | Sold out |
| waypoint wealth counsel | 0 | $0 | 0.00% | −895−100.0% | Sold out |
| Beese Fulmer Investment Management, Inc. | 0 | $0 | 0.00% | −888−100.0% | Sold out |
| Jackson Thornton Asset Management, LLC | 0 | $0 | 0.00% | −842−100.0% | Sold out |
| HighPoint Advisor Group LLC | 0 | $0 | 0.00% | −832−100.0% | Sold out |
| Blueshift Asset Management, LLC | 0 | $0 | 0.00% | −791−100.0% | Sold out |
| Perigon Wealth Management, LLC | 0 | $0 | 0.00% | −776−100.0% | Sold out |
| Wick Capital Partners, LLC | 0 | $0 | 0.00% | −769−100.0% | Sold out |
| Kaufman Rossin Wealth, LLC | 0 | $0 | 0.00% | −749−100.0% | Sold out |
| Banco Santander, S.A. | 0 | $0 | 0.00% | −731−100.0% | Sold out |
| Sym Financial Corp | 0 | $0 | 0.00% | −729−100.0% | Sold out |
| Meridian Financial, LLC | 0 | $0 | 0.00% | −728−100.0% | Sold out |
| GenTrust, LLC | 0 | $0 | 0.00% | −695−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −676−100.0% | Sold out |
| Savvy Advisors, Inc. | 0 | $0 | 0.00% | −672−100.0% | Sold out |
| West Family Investments, Inc. | 0 | $0 | 0.00% | −646−100.0% | Sold out |
| Journey Retirement Planning & Investment Management LLC | 0 | $0 | 0.00% | −630−100.0% | Sold out |
| Transcend Wealth Collective, LLC | 0 | $0 | 0.00% | −620−100.0% | Sold out |
| Everpar Advisors LLC | 0 | $0 | 0.00% | −620−100.0% | Sold out |
| Waterloo Capital, L.P. | 0 | $0 | 0.00% | −605−100.0% | Sold out |
| Covenant Partners, LLC | 0 | $0 | 0.00% | −604−100.0% | Sold out |
| AlTi Global, Inc. | 0 | $0 | 0.00% | −602−100.0% | Sold out |
| Evercore Wealth Management, LLC | 0 | $0 | 0.00% | −600−100.0% | Sold out |
| Premier Path Wealth Partners, LLC | 0 | $0 | 0.00% | −596−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −588−100.0% | Sold out |
| LVW Advisors, LLC | 0 | $0 | 0.00% | −582−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −580−100.0% | Sold out |
| Cooper Financial Group | 0 | $0 | 0.00% | −580−100.0% | Sold out |
| Kingswood Wealth Advisors, LLC | 0 | $0 | 0.00% | −574−100.0% | Sold out |
| Northwest Wealth Management, LLC | 0 | $0 | 0.00% | −565−100.0% | Sold out |
| Fidelis Capital Partners, LLC | 0 | $0 | 0.00% | −563−100.0% | Sold out |
| Alta Advisers Ltd | 0 | $0 | 0.00% | −557−100.0% | Sold out |
| Chicago Partners Investment Group LLC | 0 | $0 | 0.00% | −617−100.0% | Sold out |
| Gabelli Funds LLC | 0 | $0 | 0.00% | −550−100.0% | Sold out |
| Essex LLC | 0 | $0 | 0.00% | −546−100.0% | Sold out |
| Portside Wealth Group, LLC | 0 | $0 | 0.00% | −546−100.0% | Sold out |