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 2023
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 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
- 478
- 0 vs. Q4 2022
- Shares held
- 119.6M
- +131.7K (+0.1%) vs. Q4 2022
- Total value
- $24.0B
- −$4.42B (−15.6%) vs. Q4 2022
- New holders
- 53
- 174 more added
- Sold out
- 53
- 170 more reduced
11 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital World Investors | 16,476,201 | $3.30B | 0.68% | +85,926+0.5% | Added |
| FMR LLC | 13,170,835 | $2.64B | 0.24% | −341,248−2.5% | Reduced |
| Vanguard Group Inc | 11,608,167 | $2.33B | 0.06% | +101,051+0.9% | Added |
| Baillie Gifford & Co | 8,639,141 | $1.73B | 1.56% | −768,730−8.2% | Reduced |
| BlackRock Inc. | 8,548,962 | $1.71B | 0.05% | +59,582+0.7% | Added |
| Wellington Management Group LLP | 6,153,777 | $1.23B | 0.24% | −80,309−1.3% | Reduced |
| Price T Rowe Associates Inc | 3,972,876 | $795.8M | 0.12% | −101,268−2.5% | Reduced |
| Dodge & Cox | 3,894,535 | $780.2M | 0.53% | −696,247−15.2% | Reduced |
| JPMorgan Chase & Co | 3,094,734 | $619.9M | 0.08% | −32,960−1.1% | Reduced |
| T. Rowe Price Investment Management, Inc. | 3,030,821 | $607.1M | 0.44% | −171,972−5.4% | Reduced |
| State Street Corp | 2,854,881 | $571.9M | 0.03% | +68,339+2.5% | Added |
| Capital Research Global Investors | 2,439,596 | $488.7M | 0.14% | +1,607,479+193.2% | Added |
| Capital International Investors | 2,229,589 | $446.6M | 0.11% | +223,968+11.2% | Added |
| Geode Capital Management, LLC | 1,738,115 | $347.7M | 0.05% | +48,186+2.9% | Added |
| RTW Investments, LP | 1,683,362 | $337.2M | 7.02% | 00.0% | Unchanged |
| Norges Bank | 1,521,412 | $304.8M | 0.07% | +508,566+50.2% | Added |
| Morgan Stanley | 1,230,815 | $246.6M | 0.03% | −159,825−11.5% | Reduced |
| Avoro Capital Advisors LLC | 1,105,000 | $221.4M | 3.28% | 00.0% | Unchanged |
| Bellevue Group AG | 883,250 | $176.9M | 2.57% | −37,963−4.1% | Reduced |
| Bank of America Corp | 771,205 | $154.5M | 0.02% | +467,996+154.3% | Added |
| Massachusetts Financial Services Co | 765,772 | $153.4M | 0.05% | +10,230+1.4% | Added |
| Northern Trust Corp | 761,584 | $152.6M | 0.03% | +12,045+1.6% | Added |
| Legal & General Group Plc | 731,022 | $146.4M | 0.05% | −1,333−0.2% | Reduced |
| UBS Asset Management Americas Inc | 673,878 | $135.0M | 0.07% | +15,958+2.4% | Added |
| Loomis Sayles & Co L P | 658,226 | $131.9M | 0.23% | −54,330−7.6% | Reduced |
| Amundi | 653,780 | $131.3M | 0.07% | −13,753−2.1% | Reduced |
| Gilder Gagnon Howe & Co LLC | 621,208 | $124.4M | 2.06% | −28,409−4.4% | Reduced |
| Nuveen Asset Management, LLC | 609,106 | $122.0M | 0.05% | −9,538−1.5% | Reduced |
| Pictet Asset Management SA | 604,075 | $121.0M | 0.15% | +162,513+36.8% | Added |
| Bank of New York Mellon Corp | 554,337 | $111.0M | 0.02% | −20,048−3.5% | Reduced |
| Alliancebernstein L.P. | 535,959 | $107.4M | 0.05% | +464,775+652.9% | Added |
| Swiss National Bank | 488,300 | $97.8M | 0.07% | +2000.0% | Added |
| Deutsche Bank AG | 459,566 | $92.1M | 0.05% | −5,487−1.2% | Reduced |
| First Trust Advisors LP | 430,087 | $86.2M | 0.10% | +9,527+2.3% | Added |
| American Century Companies Inc | 444,608 | $85.1M | 0.07% | −255,187−36.5% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 407,934 | $81.7M | 0.20% | −52,241−11.4% | Reduced |
| Charles Schwab Investment Management Inc | 405,363 | $81.2M | 0.02% | +4,787+1.2% | Added |
| Invesco Ltd. | 367,375 | $73.6M | 0.02% | −302,474−45.2% | Reduced |
| TD Asset Management Inc | 359,864 | $72.1M | 0.09% | −32,586−8.3% | Reduced |
| Rock Springs Capital Management LP | 345,000 | $69.1M | 1.65% | +12,500+3.8% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 340,967 | $68.3M | 0.05% | +3,991+1.2% | Added |
| Manufacturers Life Insurance Company, The | 337,528 | $67.6M | 0.04% | −5,692−1.7% | Reduced |
| Swedbank AB | 333,942 | $66.9M | 0.13% | −92,711−21.7% | Reduced |
| Polar Capital Holdings Plc | 311,918 | $62.5M | 0.46% | +14,418+4.8% | Added |
| Candriam Luxembourg S.C.A. | 328,291 | $60.5M | 0.42% | +7,796+2.4% | Added |
| Janus Henderson Group PLC | 298,843 | $59.9M | 0.04% | −166,545−35.8% | Reduced |
| CI Private Wealth, LLC | 272,882 | $54.7M | 0.15% | +270,010+9,401.5% | Added |
| Casdin Capital, LLC | 270,000 | $54.1M | 4.47% | −95,000−26.0% | Reduced |
| Eagle Asset Management Inc | 263,448 | $52.8M | 0.31% | −225−0.1% | Reduced |
| Balyasny Asset Management LLC | 251,798 | $50.4M | 0.17% | +251,279+48,416.0% | Added |
| Wells Fargo & Company | 244,466 | $49.0M | 0.02% | +45,050+22.6% | Added |
| California Public Employees Retirement System | 237,113 | $47.5M | 0.04% | −33,770−12.5% | Reduced |
| D. E. Shaw & Co., Inc. | 231,345 | $46.3M | 0.07% | +54,929+31.1% | Added |
| Goldman Sachs Group Inc | 230,186 | $46.1M | 0.01% | −162,575−41.4% | Reduced |
| Dimensional Fund Advisors LP | 218,479 | $43.8M | 0.01% | +23,903+12.3% | Added |
| Royal Bank of Canada | 216,159 | $43.3M | 0.01% | +19,579+10.0% | Added |
| Assenagon Asset Management S.A. | 215,191 | $43.1M | 0.17% | +207,364+2,649.3% | Added |
| California State Teachers Retirement System | 203,262 | $40.7M | 0.06% | +1,531+0.8% | Added |
| Ameriprise Financial Inc | 203,170 | $40.7M | 0.01% | +155,795+328.9% | Added |
| State of Wisconsin Investment Board | 182,807 | $36.6M | 0.11% | +97,373+114.0% | Added |
| AXA S.A. | 173,766 | $34.8M | 0.12% | −27,650−13.7% | Reduced |
| Voya Investment Management LLC | 172,640 | $34.6M | 0.04% | −12,559−6.8% | Reduced |
| Handelsbanken Fonder AB | 171,289 | $34.3M | 0.20% | −21,005−10.9% | Reduced |
| Canada Pension Plan Investment Board | 169,198 | $33.9M | 0.05% | +107,075+172.4% | Added |
| Two Sigma Investments, LP | 167,346 | $33.5M | 0.10% | −15,361−8.4% | Reduced |
| Franklin Resources Inc | 160,795 | $32.2M | 0.02% | −500.0% | Reduced |
| Rhumbline Advisers | 157,895 | $31.6M | 0.04% | +9,499+6.4% | Added |
| Two Sigma Advisers, LP | 155,100 | $31.1M | 0.08% | +35,100+29.3% | Added |
| National Pension Service | 156,230 | $30.5M | 0.06% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 148,088 | $29.7M | 0.04% | −6,610−4.3% | Reduced |
| Tekla Capital Management LLC | 143,214 | $28.7M | 1.09% | 00.0% | Unchanged |
| Barclays PLC | 141,595 | $28.4M | 0.03% | −20,539−12.7% | Reduced |
| Voloridge Investment Management, LLC | 141,388 | $28.3M | 0.14% | −68,623−32.7% | Reduced |
| State Board of Administration of Florida Retirement System | 137,022 | $27.4M | 0.06% | −100.0% | Reduced |
| Eagle Health Investments LP | 136,756 | $27.4M | 5.33% | −18,960−12.2% | Reduced |
| Squarepoint Ops LLC | 133,228 | $26.7M | 0.19% | +131,019+5,931.1% | Added |
| Credit Suisse AG | 132,073 | $26.5M | 0.03% | +5,994+4.8% | Added |
| Man Group plc | – | $26.3M | 0.09% | – | – |
| FIL Ltd | 128,811 | $25.8M | 0.03% | +128,807+3,220,175.0% | Added |
| Tobam | 126,760 | $25.4M | 1.67% | +10,712+9.2% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 126,520 | $25.3M | 0.18% | +34,954+38.2% | Added |
| HighTower Advisors, LLC | 125,560 | $25.1M | 0.05% | −182−0.1% | Reduced |
| Royal London Asset Management Ltd | 124,771 | $25.0M | 0.10% | +82,693+196.5% | Added |
| CIBC Private Wealth Group, LLC | 120,981 | $24.2M | 0.07% | −885−0.7% | Reduced |
| DekaBank Deutsche Girozentrale | 124,045 | $24.0M | 0.06% | +33,692+37.3% | Added |
| Novo Holdings A/S | 118,383 | $23.7M | 1.69% | +6,383+5.7% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 114,895 | $23.0M | 0.08% | −11,952−9.4% | Reduced |
| Susquehanna International Group, LLP | 114,401 | $22.9M | 0.04% | +83,736+273.1% | Added |
| Aviva PLC | 107,172 | $21.5M | 0.10% | −22,668−17.5% | Reduced |
| APG Asset Management N.V. | 115,424 | $21.3M | 0.05% | −9,766−7.8% | Reduced |
| Citadel Advisors LLC | 104,336 | $20.9M | 0.02% | +102,896+7,145.6% | Added |
| Capital International Ltd | 93,581 | $18.7M | 1.12% | +5,536+6.3% | Added |
| Nicholas Investment Partners, LP | 90,351 | $18.1M | 1.38% | +37,467+70.8% | Added |
| Neuberger Berman Group LLC | 89,452 | $17.9M | 0.02% | +28,682+47.2% | Added |
| Treasurer of the State of North Carolina | 88,477 | $17.7M | 0.10% | +2,110+2.4% | Added |
| Van Eck Associates Corp | 81,281 | $16.3M | 0.04% | −11,099−12.0% | Reduced |
| Citigroup Inc | 78,861 | $15.8M | 0.02% | −117,400−59.8% | Reduced |
| Capital International Sarl | 77,090 | $15.4M | 0.78% | +10,214+15.3% | Added |
| Clearbridge Investments, LLC | 76,274 | $15.3M | 0.01% | +19,614+34.6% | Added |
| Lombard Odier Asset Management (Switzerland) SA | 76,103 | $15.2M | 1.33% | +19,365+34.1% | Added |