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 2024
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 31, 2024. 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
- 499
- +6 vs. Q4 2023
- Shares held
- 114.8M
- −2.25M (−1.9%) vs. Q4 2023
- Total value
- $17.2B
- −$5.24B (−23.4%) vs. Q4 2023
- New holders
- 71
- 204 more added
- Sold out
- 65
- 151 more reduced
8 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2023: 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 2024
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital World Investors | 12,789,236 | $1.91B | 0.32% | −3,385,327−20.9% | Reduced |
| Vanguard Group Inc | 11,994,261 | $1.79B | 0.04% | +50,366+0.4% | Added |
| FMR LLC | 9,967,996 | $1.49B | 0.10% | −344,360−3.3% | Reduced |
| BlackRock Inc. | 9,025,007 | $1.35B | 0.03% | +503,892+5.9% | Added |
| Wellington Management Group LLP | 7,209,005 | $1.08B | 0.19% | −5,193−0.1% | Reduced |
| Baillie Gifford & Co | 6,623,577 | $989.9M | 0.77% | −343,520−4.9% | Reduced |
| Dodge & Cox | 3,811,480 | $569.6M | 0.33% | +137,170+3.7% | Added |
| Price T Rowe Associates Inc | 3,685,753 | $550.8M | 0.07% | +201,784+5.8% | Added |
| Capital International Investors | 3,651,217 | $545.7M | 0.11% | +64,560+1.8% | Added |
| State Street Corp | 3,191,373 | $477.0M | 0.02% | +72,821+2.3% | Added |
| Capital Research Global Investors | 3,144,987 | $470.0M | 0.11% | +214,908+7.3% | Added |
| T. Rowe Price Investment Management, Inc. | 2,872,904 | $429.4M | 0.26% | −553,159−16.1% | Reduced |
| Norges Bank | 2,292,654 | $342.6M | 0.05% | +252,856+12.4% | Added |
| Geode Capital Management, LLC | 2,001,718 | $298.7M | 0.03% | +74,982+3.9% | Added |
| JPMorgan Chase & Co | 1,748,189 | $261.3M | 0.02% | −1,267,952−42.0% | Reduced |
| American Century Companies Inc | 1,373,654 | $205.3M | 0.13% | +958,710+231.0% | Added |
| Pictet Asset Management Holding SA | 961,504 | $144.6M | 0.16% | +75,919+8.6% | Added |
| Bellevue Group AG | 918,284 | $137.2M | 2.09% | +32,966+3.7% | Added |
| Deep Track Capital, LP | 832,310 | $124.4M | 3.58% | +832,310 | New |
| Bank of New York Mellon Corp | 798,445 | $119.3M | 0.02% | −38,686−4.6% | Reduced |
| UBS Asset Management Americas Inc | 758,650 | $113.4M | 0.04% | +17,589+2.4% | Added |
| Legal & General Group Plc | 750,602 | $112.2M | 0.03% | −7,902−1.0% | Reduced |
| Northern Trust Corp | 739,584 | $110.5M | 0.02% | −24,936−3.3% | Reduced |
| Amundi | 746,064 | $108.3M | 0.05% | +34,372+4.8% | Added |
| Morgan Stanley | 675,281 | $100.9M | 0.01% | −131,314−16.3% | Reduced |
| Loomis Sayles & Co L P | 581,851 | $87.0M | 0.12% | −26,877−4.4% | Reduced |
| Squarepoint Ops LLC | 580,441 | $86.7M | 0.36% | +244,615+72.8% | Added |
| Nuveen Asset Management, LLC | 511,978 | $76.5M | 0.02% | −31,433−5.8% | Reduced |
| Deutsche Bank AG | 507,077 | $75.8M | 0.04% | +44,758+9.7% | Added |
| Bank of America Corp | 484,893 | $72.5M | 0.01% | +168,660+53.3% | Added |
| TD Asset Management Inc | 462,348 | $69.1M | 0.06% | −3,737−0.8% | Reduced |
| Charles Schwab Investment Management Inc | 447,560 | $66.9M | 0.02% | +9,256+2.1% | Added |
| Gilder Gagnon Howe & Co LLC | 405,173 | $60.6M | 0.76% | −181,872−31.0% | Reduced |
| Swiss National Bank | 375,900 | $56.2M | 0.04% | −14,900−3.8% | Reduced |
| Royal Bank of Canada | 374,424 | $56.0M | 0.01% | +116,469+45.2% | Added |
| Casdin Capital, LLC | 358,000 | $53.5M | 3.98% | +163,000+83.6% | Added |
| Vestal Point Capital, LP | 350,000 | $52.3M | 4.33% | +315,000+900.0% | Added |
| Manufacturers Life Insurance Company, The | 337,025 | $50.4M | 0.05% | −3,795−1.1% | Reduced |
| Royal London Asset Management Ltd | 326,869 | $48.9M | 0.12% | +18,045+5.8% | Added |
| Candriam Luxembourg S.C.A. | 316,898 | $47.4M | 0.30% | +66,514+26.6% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 311,852 | $46.6M | 0.11% | −37,268−10.7% | Reduced |
| Avoro Capital Advisors LLC | 300,000 | $44.8M | 0.52% | −811,111−73.0% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 290,996 | $43.5M | 0.03% | −4,283−1.5% | Reduced |
| Balyasny Asset Management LLC | 287,627 | $43.0M | 0.11% | +287,627 | New |
| CI Private Wealth, LLC | 274,607 | $41.0M | 0.07% | −890.0% | Reduced |
| Canada Pension Plan Investment Board | 273,790 | $40.9M | 0.04% | +30,792+12.7% | Added |
| Eagle Asset Management Inc | 258,248 | $39.6M | 0.20% | −4,617−1.8% | Reduced |
| Goldman Sachs Group Inc | 260,019 | $38.9M | 0.01% | −31,349−10.8% | Reduced |
| Dimensional Fund Advisors LP | 255,179 | $38.1M | 0.01% | −11,855−4.4% | Reduced |
| Rock Springs Capital Management LP | 244,000 | $36.5M | 0.93% | +9,000+3.8% | Added |
| Avidity Partners Management LP | 243,000 | $36.3M | 1.29% | +243,000 | New |
| Franklin Resources Inc | 237,524 | $35.5M | 0.01% | +86,596+57.4% | Added |
| Schonfeld Strategic Advisors LLC | 235,606 | $35.2M | 0.28% | +233,653+11,963.8% | Added |
| Polar Capital Holdings Plc | 235,000 | $35.1M | 0.21% | +50,000+27.0% | Added |
| Standard Life Aberdeen plc | 219,275 | $32.8M | 0.06% | −13,441−5.8% | Reduced |
| First Trust Advisors LP | 217,373 | $32.5M | 0.03% | −89,320−29.1% | Reduced |
| California Public Employees Retirement System | 214,330 | $32.0M | 0.02% | +35,000+19.5% | Added |
| Man Group plc | 210,235 | $31.4M | 0.08% | +167,345+390.2% | Added |
| Wells Fargo & Company | 206,364 | $30.8M | 0.01% | −23,266−10.1% | Reduced |
| Point72 Asset Management, L.P. | 206,255 | $30.8M | 0.09% | +120,265+139.9% | Added |
| Antipodes Partners Ltd | 205,579 | $30.7M | 0.97% | +16,438+8.7% | Added |
| Millennium Management LLC | 202,278 | $30.2M | 0.03% | +165,742+453.6% | Added |
| Ameriprise Financial Inc | 194,725 | $29.1M | 0.01% | −182,934−48.4% | Reduced |
| Barclays PLC | 193,972 | $29.0M | 0.01% | +51,972+36.6% | Added |
| California State Teachers Retirement System | 191,418 | $28.6M | 0.04% | −160−0.1% | Reduced |
| Two Sigma Advisers, LP | 189,600 | $28.3M | 0.07% | +189,600 | New |
| National Pension Service | 186,183 | $27.8M | 0.03% | +18,413+11.0% | Added |
| State Board of Administration of Florida Retirement System | 137,022 | $27.4M | 0.06% | +1,135+0.8% | Added |
| Palo Alto Investors LP | 182,766 | $27.3M | 3.08% | +28,329+18.3% | Added |
| ADAR1 Capital Management, LLC | 180,145 | $26.9M | 7.35% | +170,645+1,796.3% | Added |
| Janus Henderson Group PLC | 178,954 | $26.7M | 0.01% | −99,127−35.6% | Reduced |
| CIBC Private Wealth Group, LLC | 174,249 | $26.7M | 0.05% | +548+0.3% | Added |
| Invesco Ltd. | 178,313 | $26.6M | 0.01% | +1,453+0.8% | Added |
| Rhumbline Advisers | 173,689 | $26.0M | 0.02% | +816+0.5% | Added |
| Jane Street Group, LLC | 163,938 | $24.5M | 0.03% | +66,575+68.4% | Added |
| Citigroup Inc | 150,690 | $22.5M | 0.02% | +77,889+107.0% | Added |
| Federated Hermes, Inc. | 148,504 | $22.2M | 0.05% | +11,363+8.3% | Added |
| AQR Capital Management LLC | 141,137 | $21.1M | 0.04% | +127,117+906.7% | Added |
| Credit Suisse AG | 129,346 | $19.3M | 0.02% | −46,630−26.5% | Reduced |
| Jacobs Levy Equity Management, Inc | 126,367 | $18.9M | 0.08% | +126,367 | New |
| HighTower Advisors, LLC | 126,080 | $18.8M | 0.03% | +1,860+1.5% | Added |
| UBS Group AG | 124,463 | $18.6M | 0.01% | +33,990+37.6% | Added |
| Hudson Bay Capital Management LP | 122,500 | $18.3M | 0.16% | +40,000+48.5% | Added |
| Novo Holdings A/S | 118,383 | $17.7M | 1.22% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 113,042 | $17.3M | 0.03% | −24,843−18.0% | Reduced |
| Caption Management, LLC | 114,122 | $17.1M | 1.88% | +92,580+429.8% | Added |
| Qube Research & Technologies Ltd | 110,759 | $16.6M | 0.03% | +92,307+500.3% | Added |
| National Bank of Canada | 108,410 | $16.3M | 0.03% | +107,897+21,032.6% | Added |
| AXA S.A. | 107,636 | $16.1M | 0.05% | −59,417−35.6% | Reduced |
| Bank of Montreal | 102,508 | $15.9M | 0.01% | +62,543+156.5% | Added |
| D. E. Shaw & Co., Inc. | 103,387 | $15.5M | 0.02% | +7,843+8.2% | Added |
| Sofinnova Investments, Inc. | 103,036 | $15.4M | 0.91% | +103,036 | New |
| Two Sigma Investments, LP | 102,512 | $15.3M | 0.04% | +102,512 | New |
| BNP Paribas Arbitrage, SA | 101,446 | $15.2M | 0.02% | +18,742+22.7% | Added |
| Trexquant Investment LP | 96,975 | $14.5M | 0.29% | +45,578+88.7% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 94,553 | $14.1M | 0.07% | +1,296+1.4% | Added |
| New York State Common Retirement Fund | 93,766 | $14.0M | 0.02% | −18,148−16.2% | Reduced |
| Capital International Inc | 93,376 | $14.0M | 0.19% | −6,646−6.6% | Reduced |
| Neuberger Berman Group LLC | 91,350 | $13.7M | 0.01% | +19,686+27.5% | Added |
| Cubist Systematic Strategies, LLC | 90,234 | $13.5M | 0.15% | +72,220+400.9% | Added |