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 |
|---|---|---|---|---|---|
| Morgens Waterfall Vintiadis & Co Inc | 4,000 | $1.08M | 1.22% | +4,000 | New |
| Arrowstreet Capital, Limited Partnership | 4,055 | $1.09M | 0.00% | +4,055 | New |
| RSM US Wealth Management LLC | 4,182 | $1.13M | 0.02% | −566−11.9% | Reduced |
| Atria Investments LLC | 4,204 | $1.14M | 0.01% | +893+27.0% | Added |
| AustralianSuper Pty Ltd | 4,218 | $1.14M | 0.01% | 00.0% | Unchanged |
| Colony Group, LLC | 4,218 | $1.14M | 0.00% | −209−4.7% | Reduced |
| Citadel Advisors LLC | 4,236 | $1.14M | 0.00% | −61,157−93.5% | Reduced |
| Brandywine Managers, LLC | 4,348 | $1.17M | 1.41% | 00.0% | Unchanged |
| Bank of Nova Scotia | 4,506 | $1.22M | 0.00% | −6−0.1% | Reduced |
| Omers Administration Corp | 4,517 | $1.22M | 0.01% | −735−14.0% | Reduced |
| Commerce Bank | 4,557 | $1.23M | 0.01% | +55+1.2% | Added |
| US Bancorp | 4,590 | $1.24M | 0.00% | −192−4.0% | Reduced |
| Allstate Corp | 4,701 | $1.27M | 0.04% | +903+23.8% | Added |
| Plato Investment Management Ltd | 4,659 | $1.27M | 0.11% | −888−16.0% | Reduced |
| Westpac Banking Corp | 5,073 | $1.37M | 0.10% | −5,487−52.0% | Reduced |
| Dark Forest Capital Management LP | 5,153 | $1.39M | 0.06% | +5,153 | New |
| Sectoral Asset Management Inc | 5,205 | $1.41M | 1.09% | −3,095−37.3% | Reduced |
| Merit Financial Group, LLC | 5,314 | $1.43M | 0.02% | +2,819+113.0% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 5,342 | $1.44M | 0.02% | −6,413−54.6% | Reduced |
| Knollwood Investment Advisory, LLC | 5,355 | $1.45M | 0.16% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 5,408 | $1.46M | 0.15% | +595+12.4% | Added |
| CIBC Asset Management Inc | 5,422 | $1.46M | 0.00% | +288+5.6% | Added |
| Metis Global Partners, LLC | 5,566 | $1.50M | 0.04% | +839+17.7% | Added |
| Shell Asset Management Co | 5,655 | $1.53M | 0.07% | −337−5.6% | Reduced |
| Privium Fund Management B.V. | 5,716 | $1.54M | 0.40% | +5,716 | New |
| E. Ohman J:or Asset Management AB | 5,800 | $1.57M | 0.04% | −300−4.9% | Reduced |
| ProShare Advisors LLC | 5,840 | $1.58M | 0.00% | −270−4.4% | Reduced |
| Advisors Asset Management, Inc. | 5,851 | $1.58M | 0.03% | +204+3.6% | Added |
| CIBC World Markets Corp | 5,868 | $1.58M | 0.01% | +58+1.0% | Added |
| Intech Investment Management LLC | 5,898 | $1.59M | 0.02% | −1,675−22.1% | Reduced |
| Empowered Funds, LLC | 5,901 | $1.59M | 0.02% | −1,729−22.7% | Reduced |
| Maryland State Retirement & Pension System | 6,021 | $1.63M | 0.04% | −969−13.9% | Reduced |
| Motley Fool Asset Management LLC | 6,029 | $1.63M | 0.09% | +4,130+217.5% | Added |
| Toroso Investments, LLC | 6,127 | $1.65M | 0.01% | −7,061−53.5% | Reduced |
| Genus Capital Management Inc. | 6,130 | $1.66M | 0.24% | +6,130 | New |
| Burney Co | 6,202 | $1.67M | 0.06% | −19,536−75.9% | Reduced |
| Group One Trading, L.P. | 6,202 | $1.67M | 0.07% | +6,202 | New |
| Jain Global LLC | 6,221 | $1.68M | 0.03% | +6,221 | New |
| Squarepoint Ops LLC | 6,268 | $1.69M | 0.00% | −121,429−95.1% | Reduced |
| Pathstone Holdings, LLC | 6,298 | $1.70M | 0.01% | +115+1.9% | Added |
| SummitTX Capital, L.P. | 6,326 | $1.71M | 0.08% | +6,326 | New |
| Captrust Financial Advisors | 6,381 | $1.72M | 0.00% | −33−0.5% | Reduced |
| Assenagon Asset Management S.A. | 6,405 | $1.73M | 0.00% | −13,513−67.8% | Reduced |
| Quantinno Capital Management LP | 6,432 | $1.74M | 0.01% | +1,876+41.2% | Added |
| NEOS Investment Management LLC | 6,475 | $1.75M | 0.03% | −9,848−60.3% | Reduced |
| Tema ETFs LLC | 6,475 | $1.75M | 0.52% | −9,848−60.3% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 6,534 | $1.76M | 0.01% | −2,596−28.4% | Reduced |
| Gateway Investment Advisers LLC | 6,540 | $1.77M | 0.02% | −843−11.4% | Reduced |
| AG2R la Mondiale Gestion D'Actifs | 5,825 | $1.77M | 0.10% | +5,825 | New |
| Pallas Capital Advisors LLC | 6,635 | $1.79M | 0.07% | +3,227+94.7% | Added |
| Simplex Trading, LLC | 6,704 | $1.81M | 0.06% | +1,875+38.8% | Added |
| Man Group plc | 7,071 | $1.91M | 0.01% | −9,311−56.8% | Reduced |
| Stifel Financial Corp | 7,073 | $1.91M | 0.00% | −2,944−29.4% | Reduced |
| Twin Tree Management, LP | 7,074 | $1.91M | 0.04% | +7,074 | New |
| MetLife Investment Management | 7,295 | $1.97M | 0.01% | −9−0.1% | Reduced |
| Gulf International Bank (UK) Ltd | 7,364 | $1.99M | 0.07% | −2,390−24.5% | Reduced |
| Clearbridge Investments, LLC | 7,777 | $2.10M | 0.00% | +7,777 | New |
| M&T Bank Corp | 7,868 | $2.12M | 0.01% | −740−8.6% | Reduced |
| SIH Partners, LLLP | 7,959 | $2.15M | 0.19% | +7,959 | New |
| Cetera Investment Advisers | 8,017 | $2.16M | 0.00% | +3,247+68.1% | Added |
| Values First Advisors, Inc. | 8,113 | $2.19M | 1.28% | −879−9.8% | Reduced |
| Nisa Investment Advisors, LLC | 8,155 | $2.20M | 0.01% | −5,162−38.8% | Reduced |
| Hussman Strategic Advisors, Inc. | 8,400 | $2.27M | 0.55% | +8,400 | New |
| Commonwealth Equity Services, LLC | 8,471 | $2.29M | 0.00% | +1,934+29.6% | Added |
| FORA Capital, LLC | 8,624 | $2.33M | 0.24% | −4,074−32.1% | Reduced |
| Wealthfront Advisers LLC | 8,721 | $2.35M | 0.01% | −3,899−30.9% | Reduced |
| ASR Vermogensbeheer N.V. | 8,763 | $2.37M | 0.04% | +8,763 | New |
| Kentucky Retirement Systems | 8,794 | $2.37M | 0.07% | +8,794 | New |
| Profund Advisors LLC | 8,826 | $2.38M | 0.10% | −869−9.0% | Reduced |
| Amalgamated Bank | 8,853 | $2.39M | 0.02% | +369+4.3% | Added |
| Acadian Asset Management LLC | 8,977 | $2.42M | 0.01% | −7,699−46.2% | Reduced |
| LMR Partners LLP | 9,000 | $2.43M | 0.05% | −2,901−24.4% | Reduced |
| JustInvest LLC | 9,088 | $2.45M | 0.04% | +514+6.0% | Added |
| TB Alternative Assets Ltd. | 9,168 | $2.48M | 0.58% | +9,168 | New |
| Suvretta Capital Management, LLC | 9,370 | $2.53M | 0.10% | +9,370 | New |
| Federation des caisses Desjardins du Quebec | 9,422 | $2.55M | 0.01% | +341+3.8% | Added |
| Mackenzie Financial Corp | 9,485 | $2.56M | 0.00% | +626+7.1% | Added |
| Swiss Life Asset Management Ltd | 9,810 | $2.65M | 0.02% | −3,004−23.4% | Reduced |
| Silvercrest Asset Management Group LLC | 9,821 | $2.65M | 0.02% | +4,930+100.8% | Added |
| Traynor Capital Management, Inc. | 9,833 | $2.66M | 0.22% | +483+5.2% | Added |
| Nordea Investment Management AB | 10,235 | $2.71M | 0.00% | +47+0.5% | Added |
| S&CO Inc | 10,050 | $2.71M | 0.18% | +4,300+74.8% | Added |
| Boothbay Fund Management, LLC | 10,090 | $2.72M | 0.10% | +10,090 | New |
| Assetmark, Inc | 10,641 | $2.87M | 0.01% | +608+6.1% | Added |
| Bank of Montreal | 10,684 | $2.88M | 0.00% | −923−8.0% | Reduced |
| Cullen/Frost Bankers, Inc. | 10,717 | $2.89M | 0.04% | +78+0.7% | Added |
| Verition Fund Management LLC | 10,779 | $2.91M | 0.02% | +7,876+271.3% | Added |
| Elo Mutual Pension Insurance Co | 10,905 | $2.94M | 0.07% | −2,303−17.4% | Reduced |
| Blair William & Co | 11,078 | $2.99M | 0.01% | −884−7.4% | Reduced |
| Mirabella Financial Services LLP | 11,737 | $3.18M | 0.13% | +1,198+11.4% | Added |
| Lazard Asset Management LLC | 11,888 | $3.21M | 0.00% | −12,306−50.9% | Reduced |
| Voleon Capital Management LP | 11,914 | $3.22M | 0.25% | −25,267−68.0% | Reduced |
| Guggenheim Capital LLC | 12,367 | $3.34M | 0.03% | −416−3.3% | Reduced |
| Portman Square Capital LLP | 12,529 | $3.38M | 0.47% | −410−3.2% | Reduced |
| E Fund Management Co., Ltd. | 12,708 | $3.43M | 0.16% | +413+3.4% | Added |
| Daiwa Securities Group Inc. | 12,906 | $3.48M | 0.01% | +355+2.8% | Added |
| MML Investors Services, LLC | 12,927 | $3.49M | 0.01% | +2,189+20.4% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 12,957 | $3.50M | 0.04% | +1,346+11.6% | Added |
| Public Employees Retirement Association of Colorado | 13,073 | $3.53M | 0.02% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 13,097 | $3.54M | 0.05% | −4,990−27.6% | Reduced |