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 2025
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 31, 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
- 625
- +39 vs. Q4 2024
- Shares held
- 129.4M
- +2.10M (+1.7%) vs. Q4 2024
- Total value
- $34.8B
- +$4.88B (+16.3%) vs. Q4 2024
- New holders
- 106
- 235 more added
- Sold out
- 67
- 205 more reduced
8 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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 2025
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| UBS Asset Management Americas Inc | 736,111 | $198.8M | 0.05% | +25,513+3.6% | Added |
| Bellevue Group AG | 768,147 | $207.4M | 4.65% | −2,121−0.3% | Reduced |
| AQR Capital Management LLC | 828,344 | $217.0M | 0.22% | +14,988+1.8% | Added |
| Northern Trust Corp | 865,020 | $233.6M | 0.03% | −13,840−1.6% | Reduced |
| Legal & General Group Plc | 881,111 | $237.9M | 0.06% | +52,194+6.3% | Added |
| Invesco Ltd. | 913,792 | $246.7M | 0.05% | +355,302+63.6% | Added |
| Bank of America Corp | 1,064,573 | $287.5M | 0.03% | +646,021+154.3% | Added |
| Winslow Capital Management, LLC | 1,187,178 | $320.6M | 1.28% | +166,611+16.3% | Added |
| Orbis Allan Gray Ltd | 1,634,923 | $441.5M | 2.53% | +162,121+11.0% | Added |
| American Century Companies Inc | 1,760,435 | $475.4M | 0.29% | +156,411+9.8% | Added |
| Norges Bank | 2,136,024 | $576.8M | 0.08% | −320,058−13.0% | Reduced |
| JPMorgan Chase & Co | 2,218,872 | $599.1M | 0.05% | −31,188−1.4% | Reduced |
| Geode Capital Management, LLC | 2,322,834 | $625.8M | 0.05% | +116,034+5.3% | Added |
| Wellington Management Group LLP | 2,610,986 | $705.0M | 0.14% | −1,585,637−37.8% | Reduced |
| Dodge & Cox | 3,351,762 | $905.0M | 0.52% | −188,500−5.3% | Reduced |
| State Street Corp | 3,366,583 | $909.0M | 0.04% | −56,294−1.6% | Reduced |
| Price T Rowe Associates Inc | 3,505,168 | $946.5M | 0.12% | +185,783+5.6% | Added |
| Baillie Gifford & Co | 3,657,607 | $987.6M | 0.86% | −382,652−9.5% | Reduced |
| T. Rowe Price Investment Management, Inc. | 4,418,145 | $1.19B | 0.79% | +33,696+0.8% | Added |
| Regeneron Pharmaceuticals, Inc. | 4,444,445 | $1.20B | 97.23% | 00.0% | Unchanged |
| Capital Research Global Investors | 7,154,728 | $1.93B | 0.42% | +186,215+2.7% | Added |
| BlackRock, Inc. | 9,559,382 | $2.58B | 0.05% | −325,875−3.3% | Reduced |
| Vanguard Group Inc | 13,056,605 | $3.53B | 0.06% | +323,206+2.5% | Added |
| FMR LLC | 15,309,860 | $4.13B | 0.26% | +1,823,957+13.5% | Added |
| Capital World Investors | 16,749,623 | $4.52B | 0.73% | +149,098+0.9% | Added |
| Proequities, Inc. | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Activest Wealth Management | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Capital International Investors | 0 | $0 | 0.00% | −1,418,602−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −76,800−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −56,585−100.0% | Sold out |
| Beck Bode, LLC | 0 | $0 | 0.00% | −56,017−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −44,024−100.0% | Sold out |
| Zurich Insurance Group Ltd | 0 | $0 | 0.00% | −27,977−100.0% | Sold out |
| Parallax Volatility Advisers, L.P. | 0 | $0 | 0.00% | −23,161−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −16,858−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −13,806−100.0% | Sold out |
| Savant Capital, LLC | 0 | $0 | 0.00% | −11,738−100.0% | Sold out |
| Quantitative Investment Management, LLC | 0 | $0 | 0.00% | −11,010−100.0% | Sold out |
| Natixis Advisors, L.P. | 0 | $0 | 0.00% | −10,453−100.0% | Sold out |
| LGT Fund Management Co Ltd. | 0 | $0 | 0.00% | −10,070−100.0% | Sold out |
| Employees Retirement System of Texas | 0 | $0 | 0.00% | −8,403−100.0% | Sold out |
| Garda Capital Partners LP | 0 | $0 | 0.00% | −8,143−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −7,500−100.0% | Sold out |
| Sivik Global Healthcare LLC | 0 | $0 | 0.00% | −7,000−100.0% | Sold out |
| Bridgewater Associates, LP | 0 | $0 | 0.00% | −6,452−100.0% | Sold out |
| Achmea Investment Management B.V. | 0 | $0 | 0.00% | −5,847−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −4,360−100.0% | Sold out |
| First Hawaiian Bank | 0 | $0 | 0.00% | −4,000−100.0% | Sold out |
| Baader Bank INC | 0 | $0 | 0.00% | −3,846−100.0% | Sold out |
| Janney Montgomery Scott LLC | 0 | $0 | 0.00% | −3,170−100.0% | Sold out |
| Alpha DNA Investment Management LLC | 0 | $0 | 0.00% | −3,019−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −2,900−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −2,809−100.0% | Sold out |
| Smith Group Asset Management, LLC | 0 | $0 | 0.00% | −2,750−100.0% | Sold out |
| Harbor Capital Advisors, Inc. | 0 | $0 | 0.00% | −2,650−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −2,606−100.0% | Sold out |
| Bleakley Financial Group, LLC | 0 | $0 | 0.00% | −2,590−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −2,280−100.0% | Sold out |
| AMF Pensionsforsakring AB | 0 | $0 | 0.00% | −2,089−100.0% | Sold out |
| Blueshift Asset Management, LLC | 0 | $0 | 0.00% | −1,698−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −1,644−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −1,588−100.0% | Sold out |
| JGP Global Gestao de Recursos Ltda. | 0 | $0 | 0.00% | −1,546−100.0% | Sold out |
| Virtus ETF Advisers LLC | 0 | $0 | 0.00% | −1,426−100.0% | Sold out |
| Flow Traders U.S. LLC | 0 | $0 | 0.00% | −1,392−100.0% | Sold out |
| Park Avenue Securities LLC | 0 | $0 | 0.00% | −1,368−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −1,333−100.0% | Sold out |
| Ariadne Wealth Management, LP | 0 | $0 | 0.00% | −1,042−100.0% | Sold out |
| GTS Securities LLC | 0 | $0 | 0.00% | −1,163−100.0% | Sold out |
| Kazazian Asset Management, LLC | 0 | $0 | 0.00% | −1,140−100.0% | Sold out |
| American Trust | 0 | $0 | 0.00% | −1,105−100.0% | Sold out |
| Chicago Partners Investment Group LLC | 0 | $0 | 0.00% | −1,022−100.0% | Sold out |
| Empirical Asset Management, LLC | 0 | $0 | 0.00% | −51,614−100.0% | Sold out |
| Corton Capital Inc. | 0 | $0 | 0.00% | −946−100.0% | Sold out |
| Capital Performance Advisors LLP | 0 | $0 | 0.00% | −877−100.0% | Sold out |
| Wolverine Asset Management LLC | 0 | $0 | 0.00% | −590−100.0% | Sold out |
| HM Payson & Co | 0 | $0 | 0.00% | −252−100.0% | Sold out |
| Venturi Wealth Management, LLC | 0 | $0 | 0.00% | −252−100.0% | Sold out |
| CKW Financial Group | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Coppell Advisory Solutions LLC | 0 | $0 | 0.00% | −150−100.0% | Sold out |
| Colonial Trust Co | 0 | $0 | 0.00% | −150−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −140−100.0% | Sold out |
| Park Square Financial Group, LLC | 0 | $0 | 0.00% | −121−100.0% | Sold out |
| Elequin Capital LP | 0 | $0 | 0.00% | −54−100.0% | Sold out |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 0 | $0 | 0.00% | −33−100.0% | Sold out |
| Hollencrest Capital Management | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Continuum Advisory, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Kayne Anderson Rudnick Investment Management LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Winthrop Capital Management, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| JNBA Financial Advisors | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Kestra Investment Management, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Kohmann Bosshard Financial Services, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |
| Swedbank AB | – | – | – | – | Not filed |
| Wetherby Asset Management Inc | – | – | – | – | Not filed |
| Zions Bancorporation, N.A. | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| Criterion Capital Advisors, LLC | – | – | – | – | Not filed |
| WR Wealth Planners, LLC | – | – | – | – | Not filed |
| Cassady Schiller Wealth Management, LLC | – | – | – | – | Not filed |