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, Q4 2023
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Dec 31, 2023. 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
- 501
- +53 vs. Q3 2023
- Shares held
- 117.1M
- −655.2K (−0.6%) vs. Q3 2023
- Total value
- $22.4B
- +$1.57B (+7.5%) vs. Q3 2023
- New holders
- 97
- 166 more added
- Sold out
- 44
- 161 more reduced
6 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: 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, Q4 2023
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital World Investors | 16,174,563 | $3.10B | 0.55% | −354,745−2.1% | Reduced |
| Orbis Allan Gray Ltd | 0 | $0 | 0.00% | −38,189−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −37,412−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −35,900−100.0% | Sold out |
| Kornitzer Capital Management Inc | 0 | $0 | 0.00% | −22,000−100.0% | Sold out |
| Point72 Middle East FZE | 0 | $0 | 0.00% | −16,651−100.0% | Sold out |
| Artia Global Partners LP | 0 | $0 | 0.00% | −15,971−100.0% | Sold out |
| Illinois Municipal Retirement Fund | 0 | $0 | 0.00% | −15,644−100.0% | Sold out |
| HAP Trading, LLC | 0 | $0 | 0.00% | −11,351−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −8,836−100.0% | Sold out |
| Dai-Ichi Life Insurance Company, Ltd | 0 | $0 | 0.00% | −7,100−100.0% | Sold out |
| Oregon Public Employees Retirement Fund | 0 | $0 | 0.00% | −6,819−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −6,289−100.0% | Sold out |
| Estate Counselors, LLC | 0 | $0 | 0.00% | −6,060−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −4,000−100.0% | Sold out |
| Brighton Jones LLC | 0 | $0 | 0.00% | −3,912−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −3,900−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −3,300−100.0% | Sold out |
| Parametrica Management Ltd | 0 | $0 | 0.00% | −3,221−100.0% | Sold out |
| Fosun International Ltd | 0 | $0 | 0.00% | −2,730−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −2,090−100.0% | Sold out |
| Nebula Research & Development LLC | 0 | $0 | 0.00% | −2,089−100.0% | Sold out |
| Banque Cantonale Vaudoise | 0 | $0 | 0.00% | −2,058−100.0% | Sold out |
| Cohen Lawrence B | 0 | $0 | 0.00% | −1,800−100.0% | Sold out |
| Fund Management at Engine No. 1 LLC | 0 | $0 | 0.00% | −1,789−100.0% | Sold out |
| Ieq Capital, LLC | 0 | $0 | 0.00% | −1,540−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −1,500−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −1,427−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −1,391−100.0% | Sold out |
| EP Wealth Advisors, LLC | 0 | $0 | 0.00% | −1,177−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −1,146−100.0% | Sold out |
| Artal Group S.A. | 0 | $0 | 0.00% | −936−100.0% | Sold out |
| Bessemer Group Inc | 0 | $0 | 0.00% | −476−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −421−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −64−100.0% | Sold out |
| Earnest Partners LLC | 0 | $0 | 0.00% | −61−100.0% | Sold out |
| Park Place Capital Corp | 0 | $0 | 0.00% | −49−100.0% | Sold out |
| Thomas J. Herzfeld Advisors, Inc. | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| Smithfield Trust Co | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| Cary Street Partner Investment Advisory LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| Baker Avenue Asset Management, LP | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| ClariVest Asset Management LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| J.Safra Asset Management Corp | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Crewe Advisors LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Centerpoint Advisors, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| International Biotechnology Trust PLC | – | – | – | – | Not filed |
| Karani Asset Management LLC | – | – | – | – | Not filed |
| Advisor Partners II, LLC | – | – | – | – | Not filed |
| Pathstone Family Office, LLC | – | – | – | – | Not filed |
| KB Financial Partners, LLC | – | – | – | – | Not filed |
| Steward Financial Group LLC | – | – | – | – | Not filed |