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 |
|---|---|---|---|---|---|
| ING Groep NV | 1,289 | $426.5K | 0.00% | −1,155−47.3% | Reduced |
| Crossmark Global Holdings, Inc. | 1,293 | $427.8K | 0.01% | +12+0.9% | Added |
| Smartleaf Asset Management LLC | 1,361 | $430.2K | 0.02% | +158+13.1% | Added |
| Altfest L J & Co Inc | 1,317 | $435.8K | 0.05% | −61−4.4% | Reduced |
| Founders Financial Securities LLC | 1,361 | $437.3K | 0.02% | +1,361 | New |
| Wealthcare Advisory Partners LLC | 1,330 | $440.1K | 0.01% | +19+1.4% | Added |
| Coldstream Capital Management Inc | 1,351 | $447.0K | 0.01% | −223−14.2% | Reduced |
| Virginia Retirement Systems Et Al | 1,360 | $450.0K | 0.00% | +1,360 | New |
| AlphaCentric Advisors LLC | 1,370 | $453.3K | 0.45% | +75+5.8% | Added |
| Optimize Financial Inc | 1,381 | $456.9K | 0.22% | +1,381 | New |
| Stephens Inc | 1,425 | $471.5K | 0.01% | +580+68.6% | Added |
| PSP Research LLC | 1,465 | $484.7K | 0.34% | +147+11.2% | Added |
| Qtron Investments LLC | 1,471 | $486.7K | 0.07% | 00.0% | Unchanged |
| Regions Financial Corp | 1,473 | $487.4K | 0.00% | +1,473 | New |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 1,533 | $493.8K | 0.00% | 00.0% | Unchanged |
| High Net Worth Advisory Group LLC | 1,500 | $496.3K | 0.12% | 00.0% | Unchanged |
| Aptus Capital Advisors, LLC | 1,513 | $500.6K | 0.00% | +1,513 | New |
| Fulton Bank, N.A. | 1,549 | $512.5K | 0.02% | +119+8.3% | Added |
| Norden Group LLC | 1,553 | $513.8K | 0.05% | +363+30.5% | Added |
| Howard Capital Management Inc. | 1,570 | $519.5K | 0.01% | −2,110−57.3% | Reduced |
| Buckingham Strategic Partners | 1,582 | $522.6K | 0.01% | −2,513−61.4% | Reduced |
| Steward Partners Investment Advisory, LLC | 1,583 | $523.8K | 0.00% | +158+11.1% | Added |
| Independent Advisor Alliance | 1,602 | $530.1K | 0.01% | +997+164.8% | Added |
| Emerald Advisers, LLC | 1,622 | $536.7K | 0.02% | 00.0% | Unchanged |
| Ballentine Partners, LLC | 1,639 | $542.3K | 0.01% | −82−4.8% | Reduced |
| Souders Financial Advisors | 1,644 | $544.0K | 0.06% | +234+16.6% | Added |
| Marks Group Wealth Management, Inc | 1,650 | $545.9K | 0.05% | +1,650 | New |
| Fort Sheridan Advisors LLC | 1,701 | $562.8K | 0.07% | 00.0% | Unchanged |
| Harbor Capital Advisors, Inc. | 1,704 | $564.0K | 0.05% | +1,704 | New |
| Kepler Cheuvreux (Suisse) SA | 1,713 | $566.8K | 0.04% | +1,713 | New |
| GraniteShares Advisors LLC | 1,755 | $580.7K | 0.42% | −31−1.7% | Reduced |
| Yousif Capital Management, LLC | 1,764 | $583.7K | 0.01% | +88+5.3% | Added |
| Capstone Capital Management Ltd | 1,767 | $584.6K | 0.59% | −534−23.2% | Reduced |
| Vise Technologies, Inc. | 1,515 | $602.4K | 0.01% | 00.0% | Unchanged |
| Ellevest, Inc. | 1,837 | $607.8K | 0.08% | +974+112.9% | Added |
| Davenport & Co LLC | 1,842 | $609.5K | 0.00% | +83+4.7% | Added |
| Meeder Advisory Services, Inc. | 1,853 | $613.1K | 0.03% | +15+0.8% | Added |
| Unique Wealth Strategies, LLC | 1,854 | $613.3K | 0.25% | +1,854 | New |
| Bannerman Wealth Management Group, LLC | 1,916 | $633.9K | 0.43% | −31−1.6% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 1,927 | $638.0K | 0.00% | −1,105−36.4% | Reduced |
| Elm Partners Management LLC | 2,043 | $645.8K | 0.03% | +35+1.7% | Added |
| TD Waterhouse Canada Inc. | 1,971 | $647.1K | 0.00% | +1,641+497.3% | Added |
| Kovitz Investment Group Partners, LLC | 1,958 | $648.0K | 0.02% | +3+0.2% | Added |
| V-Square Quantitative Management LLC | 1,969 | $651.5K | 0.07% | +11+0.6% | Added |
| Tema ETFs LLC | 1,972 | $652.5K | 0.04% | −24−1.2% | Reduced |
| Caisse de Depot Et Placement du Quebec | 1,988 | $657.8K | 0.00% | −49,610−96.1% | Reduced |
| HB Wealth Management, LLC | 1,995 | $660.1K | 0.00% | +294+17.3% | Added |
| Security National Bank of So Dak | 2,000 | $661.7K | 0.32% | 00.0% | Unchanged |
| Marex Group plc | 2,000 | $661.7K | 0.01% | +2,000 | New |
| Hunting Hill Global Capital, LLC | 2,034 | $673.0K | 0.80% | −2,225−52.2% | Reduced |
| Archford Capital Strategies, LLC | 2,036 | $673.7K | 0.08% | +12+0.6% | Added |
| Signaturefd, LLC | 2,047 | $677.4K | 0.01% | +66+3.3% | Added |
| TCW Group Inc | 2,102 | $695.5K | 0.01% | +102+5.1% | Added |
| ICICI Prudential Asset Management Co Ltd | 2,197 | $726.9K | 0.09% | +77+3.6% | Added |
| Pallas Capital Advisors LLC | 2,212 | $731.9K | 0.03% | −1,897−46.2% | Reduced |
| Gateway Investment Advisers LLC | 2,251 | $744.8K | 0.01% | −2,890−56.2% | Reduced |
| Horizon Kinetics Asset Management LLC | 2,272 | $751.7K | 0.01% | −104−4.4% | Reduced |
| QRG Capital Management, Inc. | 2,277 | $753.5K | 0.01% | −86−3.6% | Reduced |
| GWM Advisors LLC | 2,316 | $766.3K | 0.00% | −701−23.2% | Reduced |
| Nixon Peabody Trust Co | 2,322 | $768.3K | 0.06% | −15−0.6% | Reduced |
| Cannon Global Investment Management, LLC | 2,400 | $794.1K | 1.92% | +2,400 | New |
| Central Pacific Bank - Trust Division | 2,413 | $798.4K | 0.10% | 00.0% | Unchanged |
| Westpac Banking Corp | 2,452 | $811.3K | 0.06% | −2,859−53.8% | Reduced |
| UniSuper Management Pty Ltd | 2,500 | $827.2K | 0.01% | 00.0% | Unchanged |
| Sectoral Asset Management Inc | 2,310 | $864.2K | 0.72% | −680−22.7% | Reduced |
| J.Safra Asset Management Corp | 2,613 | $864.6K | 0.05% | +974+59.4% | Added |
| Horizon Investments, LLC | 2,632 | $870.9K | 0.01% | +2,181+483.6% | Added |
| Walleye Capital LLC | 2,639 | $873.2K | 0.01% | −3,329−55.8% | Reduced |
| Financiere des Professionnels - Fonds d,investissement inc. | 2,689 | $889.7K | 0.05% | 00.0% | Unchanged |
| Perpetual Ltd | 2,690 | $890.0K | 0.01% | −2,349−46.6% | Reduced |
| Regal Investment Advisors LLC | 2,691 | $890.5K | 0.05% | −23−0.8% | Reduced |
| RSM US Wealth Management LLC | 2,711 | $896.9K | 0.01% | +136+5.3% | Added |
| Private Advisory Group LLC | 2,729 | $902.9K | 0.06% | +574+26.6% | Added |
| Shepherd Financial Partners LLC | 2,736 | $905.3K | 0.09% | 00.0% | Unchanged |
| Flputnam Investment Management Co | 2,741 | $906.9K | 0.01% | +2,741 | New |
| Theory Financial LLC | 2,744 | $907.9K | 0.32% | 00.0% | Unchanged |
| Principal Securities, Inc. | 2,745 | $908.2K | 0.01% | +119+4.5% | Added |
| Park Avenue Securities LLC | 2,796 | $925.0K | 0.01% | +405+16.9% | Added |
| Hall Laurie J Trustee | 2,812 | $930.4K | 0.33% | 00.0% | Unchanged |
| Anchor Investment Management, LLC | 2,819 | $932.7K | 0.08% | +124+4.6% | Added |
| Robertson Stephens Wealth Management, LLC | 2,836 | $938.4K | 0.03% | +36+1.3% | Added |
| Siemens Fonds Invest GmbH | 2,838 | $939.0K | 0.05% | +1,001+54.5% | Added |
| Orion Capital Management LLC | 2,855 | $944.6K | 0.33% | −112−3.8% | Reduced |
| Western Financial Corp | 2,866 | $948.3K | 0.37% | +135+4.9% | Added |
| Havemeyer Place LP | 2,878 | $952.2K | 0.11% | +2,580+865.8% | Added |
| Generali Investments CEE, investicni spolecnost, a.s. | 2,900 | $959.5K | 0.05% | 00.0% | Unchanged |
| Everhart Financial Group, Inc. | 2,901 | $959.9K | 0.08% | +360+14.2% | Added |
| Merit Financial Group, LLC | 2,903 | $960.5K | 0.01% | −1,608−35.6% | Reduced |
| Prudential Financial Inc | 2,956 | $978.1K | 0.00% | −10,353−77.8% | Reduced |
| SBI Okasan Asset Management Co.Ltd. | 3,100 | $979.9K | 0.04% | −190−5.8% | Reduced |
| Everence Capital Management Inc | 2,970 | $983.0K | 0.06% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 2,990 | $989.0K | 0.06% | +2,990 | New |
| Callan Family Office, LLC | 3,035 | $1.00M | 0.02% | −579−16.0% | Reduced |
| Grandfield & Dodd, LLC | 3,081 | $1.02M | 0.06% | −48−1.5% | Reduced |
| Sanders Morris Harris LLC | 3,150 | $1.04M | 0.17% | +3,150 | New |
| Brandywine Managers, LLC | 3,168 | $1.05M | 0.62% | −450−12.4% | Reduced |
| Generali Asset Management SPA SGR | 3,193 | $1.06M | 0.02% | +3,143+6,286.0% | Added |
| J. Safra Sarasin Holding AG | 3,230 | $1.07M | 0.02% | −5,908−64.7% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 3,230 | $1.07M | 0.01% | +533+19.8% | Added |
| Keybank National Association | 3,239 | $1.07M | 0.00% | −96−2.9% | Reduced |