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, Q2 2025
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Jun 30, 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
- 653
- +35 vs. Q1 2025
- Shares held
- 132.1M
- +2.77M (+2.1%) vs. Q1 2025
- Total value
- $43.1B
- +$8.27B (+23.8%) vs. Q1 2025
- New holders
- 98
- 262 more added
- Sold out
- 63
- 214 more reduced
7 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Neuberger Berman Group LLC | 99,044 | $32.3M | 0.02% | +605+0.6% | Added |
| Aviva PLC | 97,065 | $31.7M | 0.07% | +7,012+7.8% | Added |
| Robeco Institutional Asset Management B.V. | 96,368 | $31.4M | 0.05% | −7,113−6.9% | Reduced |
| Envestnet Asset Management Inc | 95,796 | $31.2M | 0.01% | +23,749+33.0% | Added |
| Barclays PLC | 94,058 | $30.7M | 0.01% | −1,661−1.7% | Reduced |
| Russell Investments Group, Ltd. | 93,435 | $30.4M | 0.04% | −35,761−27.7% | Reduced |
| Panagora Asset Management Inc | 92,499 | $30.2M | 0.14% | −4,305−4.4% | Reduced |
| Parkman Healthcare Partners LLC | 92,338 | $30.1M | 3.48% | +23,400+33.9% | Added |
| Nomura Asset Management Co Ltd | 91,374 | $29.8M | 0.08% | +4,531+5.2% | Added |
| Great West Life Assurance Co | 91,154 | $29.7M | 0.05% | +7,326+8.7% | Added |
| Millennium Management LLC | 90,445 | $29.5M | 0.03% | −196,892−68.5% | Reduced |
| Tri Locum Partners LP | 89,525 | $29.2M | 8.86% | +89,525 | New |
| Manufacturers Life Insurance Company, The | 86,840 | $28.3M | 0.03% | −12,029−12.2% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 85,734 | $28.0M | 0.06% | −24,931−22.5% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 84,888 | $27.7M | 0.12% | −1,236−1.4% | Reduced |
| Adage Capital Partners GP, L.L.C. | 84,390 | $27.5M | 0.05% | −197,794−70.1% | Reduced |
| Prudential Financial Inc | 83,922 | $27.4M | 0.04% | −88,084−51.2% | Reduced |
| Capital International Ltd | 82,800 | $27.0M | 1.03% | +894+1.1% | Added |
| AXA S.A. | 82,480 | $26.9M | 0.08% | −6,172−7.0% | Reduced |
| HSBC Holdings PLC | 81,748 | $26.6M | 0.02% | +20,483+33.4% | Added |
| Casdin Capital, LLC | 81,500 | $26.6M | 2.42% | −38,500−32.1% | Reduced |
| Driehaus Capital Management LLC | 79,714 | $26.0M | 0.21% | +22,586+39.5% | Added |
| State of Wisconsin Investment Board | 78,106 | $25.5M | 0.06% | +4,951+6.8% | Added |
| Palo Alto Investors LP | 75,535 | $24.6M | 5.24% | −7,953−9.5% | Reduced |
| PFM Health Sciences, LP | 72,220 | $23.6M | 2.04% | −14,925−17.1% | Reduced |
| Capital International Inc | 71,831 | $23.4M | 0.23% | +4,870+7.3% | Added |
| Asset Management One Co.,Ltd. | 69,310 | $22.6M | 0.07% | +853+1.2% | Added |
| Zurich Insurance Group Ltd | 67,794 | $22.1M | 0.17% | +67,794 | New |
| Los Angeles Capital Management LLC | 67,399 | $22.0M | 0.08% | −13,463−16.6% | Reduced |
| Alliancebernstein L.P. | 67,131 | $21.9M | 0.01% | +22,294+49.7% | Added |
| Swedbank AB | 64,315 | $21.0M | 0.02% | +64,315 | New |
| New York State Common Retirement Fund | 63,272 | $20.6M | 0.03% | −1,000−1.6% | Reduced |
| Schonfeld Strategic Advisors LLC | 58,757 | $19.2M | 0.14% | +55,675+1,806.5% | Added |
| Treasurer of the State of North Carolina | 58,304 | $19.0M | 0.06% | −651−1.1% | Reduced |
| Cercano Management LLC | 56,953 | $18.6M | 0.53% | +36,181+174.2% | Added |
| Ikarian Capital, LLC | 56,594 | $18.5M | 6.11% | +25,000+79.1% | Added |
| Danske Bank A/S | 55,007 | $17.9M | 0.04% | +1,802+3.4% | Added |
| Integral Health Asset Management, LLC | 55,000 | $17.9M | 1.68% | +5,000+10.0% | Added |
| Van Eck Associates Corp | 54,560 | $17.8M | 0.02% | −9,584−14.9% | Reduced |
| Groupama Asset Managment | 48,385 | $17.6M | 0.29% | +8,246+20.5% | Added |
| U.S. Capital Wealth Advisors, LLC | 52,027 | $17.0M | 0.50% | −3,984−7.1% | Reduced |
| Rhenman & Partners Asset Management AB | 51,197 | $16.7M | 2.11% | +3,000+6.2% | Added |
| Principal Financial Group Inc | 50,534 | $16.5M | 0.01% | +15,833+45.6% | Added |
| KLP Kapitalforvaltning AS | 49,100 | $16.0M | 0.07% | +5,400+12.4% | Added |
| Eagle Health Investments LP | 46,086 | $15.0M | 3.71% | −19,570−29.8% | Reduced |
| Storebrand Asset Management AS | 44,321 | $14.5M | 0.04% | −726−1.6% | Reduced |
| State of New Jersey Common Pension Fund D | 43,859 | $14.3M | 0.06% | +114+0.3% | Added |
| Resona Asset Management Co.,Ltd. | 43,700 | $14.2M | 0.07% | +4,780+12.3% | Added |
| CI Private Wealth, LLC | 42,152 | $13.7M | 0.02% | −513−1.2% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 40,231 | $13.1M | 0.08% | −2,072−4.9% | Reduced |
| Public Employees Retirement System of Ohio | 38,752 | $12.6M | 0.04% | −917−2.3% | Reduced |
| Walleye Capital LLC | 38,715 | $12.6M | 0.12% | +36,345+1,533.5% | Added |
| Arizona State Retirement System | 37,928 | $12.4M | 0.07% | +680+1.8% | Added |
| Parnassus Investments | 37,412 | $12.2M | 0.03% | +37,412 | New |
| Teacher Retirement System of Texas | 36,408 | $11.9M | 0.05% | +1,123+3.2% | Added |
| Oddo BHF Asset Management SAS | 35,940 | $11.7M | 0.45% | +16,119+81.3% | Added |
| Canada Pension Plan Investment Board | 35,520 | $11.6M | 0.01% | −25,012−41.3% | Reduced |
| Rosenblum Silverman Sutton S F Inc | 34,392 | $11.2M | 2.72% | −240−0.7% | Reduced |
| Teachers Retirement System of the State of Kentucky | 33,218 | $10.8M | 0.09% | +505+1.5% | Added |
| Engineers Gate Manager LP | 32,630 | $10.6M | 0.13% | +7,238+28.5% | Added |
| AMF Pensionsforsakring AB | 32,537 | $10.6M | 0.07% | +32,537 | New |
| Rafferty Asset Management, LLC | 32,196 | $10.5M | 0.03% | −12,389−27.8% | Reduced |
| Investment Management Corp of Ontario | 31,521 | $10.3M | 0.15% | +8,244+35.4% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 31,402 | $10.2M | 0.02% | +15,569+98.3% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 30,751 | $10.0M | 0.02% | −26,368−46.2% | Reduced |
| LPL Financial LLC | 30,339 | $9.89M | 0.00% | +9,660+46.7% | Added |
| AIA Group Ltd | 30,232 | $9.86M | 0.21% | +3,741+14.1% | Added |
| STRS Ohio | 30,140 | $9.83M | 0.04% | +1,323+4.6% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 30,015 | $9.79M | 0.09% | +3,100+11.5% | Added |
| Erste Asset Management GmbH | 29,810 | $9.62M | 0.08% | +6,500+27.9% | Added |
| Brown Advisory Inc | 29,471 | $9.61M | 0.01% | −1,914−6.1% | Reduced |
| Iron Triangle Partners LP | 29,339 | $9.57M | 1.51% | −36,070−55.1% | Reduced |
| Polymer Capital Management (HK) LTD | 28,869 | $9.41M | 1.47% | +11,065+62.1% | Added |
| China Universal Asset Management Co., Ltd. | 27,817 | $9.07M | 0.85% | −3,154−10.2% | Reduced |
| Fiera Capital Corp | 27,743 | $9.05M | 0.03% | +10,531+61.2% | Added |
| Atika Capital Management LLC | 27,700 | $9.03M | 0.94% | +27,700 | New |
| DnB Asset Management AS | 27,463 | $8.96M | 0.04% | +166+0.6% | Added |
| Forsta Ap-Fonden | 26,400 | $8.61M | 0.06% | +600+2.3% | Added |
| USS Investment Management Ltd | 26,366 | $8.59M | 0.05% | 00.0% | Unchanged |
| Illinois Municipal Retirement Fund | 26,046 | $8.49M | 0.12% | −36,619−58.4% | Reduced |
| IFM Investors Pty Ltd | 25,358 | $8.27M | 0.08% | +1,508+6.3% | Added |
| Xponance, Inc. | 25,017 | $8.16M | 0.07% | +1,860+8.0% | Added |
| Swiss Life Asset Management Ltd | 23,789 | $7.76M | 0.05% | +13,979+142.5% | Added |
| Toronto Dominion Bank | 23,631 | $7.71M | 0.02% | +4,246+21.9% | Added |
| Kornitzer Capital Management Inc | 23,164 | $7.55M | 0.15% | +21,164+1,058.2% | Added |
| Cinctive Capital Management LP | 22,868 | $7.46M | 0.42% | −1,994−8.0% | Reduced |
| Jane Street Group, LLC | 22,856 | $7.45M | 0.01% | −75,695−76.8% | Reduced |
| Banco Bilbao Vizcaya Argentaria, S.A. | 22,251 | $7.26M | 0.07% | −512−2.2% | Reduced |
| EFG Asset Management (North America) Corp. | 21,162 | $6.89M | 0.97% | −3,529−14.3% | Reduced |
| Ilmarinen Mutual Pension Insurance Co | 21,000 | $6.85M | 0.06% | +21,000 | New |
| Artia Global Partners LP | 20,970 | $6.84M | 1.76% | −7,630−26.7% | Reduced |
| Utah Retirement Systems | 20,970 | $6.84M | 0.07% | −355−1.7% | Reduced |
| Trexquant Investment LP | 20,543 | $6.70M | 0.08% | +20,543 | New |
| British Columbia Investment Management Corp | 20,471 | $6.68M | 0.04% | −4,195−17.0% | Reduced |
| Caisse de Depot Et Placement du Quebec | 20,044 | $6.54M | 0.01% | −3,719−15.7% | Reduced |
| Point72 Europe (London) LLP | 19,934 | $6.50M | 0.33% | +3,976+24.9% | Added |
| Silvant Capital Management LLC | 19,347 | $6.31M | 0.24% | +3,152+19.5% | Added |
| Boothbay Fund Management, LLC | 19,213 | $6.27M | 0.20% | +9,123+90.4% | Added |
| Police & Firemen's Retirement System of New Jersey | 18,963 | $6.18M | 0.06% | +212+1.1% | Added |
| Comerica Bank | 18,617 | $6.07M | 0.02% | +1,364+7.9% | Added |