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 |
|---|---|---|---|---|---|
| Neuberger Berman Group LLC | 91,350 | $13.7M | 0.01% | +19,686+27.5% | Added |
| Capital International Inc | 93,376 | $14.0M | 0.19% | −6,646−6.6% | Reduced |
| New York State Common Retirement Fund | 93,766 | $14.0M | 0.02% | −18,148−16.2% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 94,553 | $14.1M | 0.07% | +1,296+1.4% | Added |
| Trexquant Investment LP | 96,975 | $14.5M | 0.29% | +45,578+88.7% | Added |
| BNP Paribas Arbitrage, SA | 101,446 | $15.2M | 0.02% | +18,742+22.7% | Added |
| Two Sigma Investments, LP | 102,512 | $15.3M | 0.04% | +102,512 | New |
| Sofinnova Investments, Inc. | 103,036 | $15.4M | 0.91% | +103,036 | New |
| D. E. Shaw & Co., Inc. | 103,387 | $15.5M | 0.02% | +7,843+8.2% | Added |
| Bank of Montreal | 102,508 | $15.9M | 0.01% | +62,543+156.5% | Added |
| AXA S.A. | 107,636 | $16.1M | 0.05% | −59,417−35.6% | Reduced |
| National Bank of Canada | 108,410 | $16.3M | 0.03% | +107,897+21,032.6% | Added |
| Qube Research & Technologies Ltd | 110,759 | $16.6M | 0.03% | +92,307+500.3% | Added |
| Caption Management, LLC | 114,122 | $17.1M | 1.88% | +92,580+429.8% | Added |
| DekaBank Deutsche Girozentrale | 113,042 | $17.3M | 0.03% | −24,843−18.0% | Reduced |
| Novo Holdings A/S | 118,383 | $17.7M | 1.22% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 122,500 | $18.3M | 0.16% | +40,000+48.5% | Added |
| UBS Group AG | 124,463 | $18.6M | 0.01% | +33,990+37.6% | Added |
| HighTower Advisors, LLC | 126,080 | $18.8M | 0.03% | +1,860+1.5% | Added |
| Jacobs Levy Equity Management, Inc | 126,367 | $18.9M | 0.08% | +126,367 | New |
| Credit Suisse AG | 129,346 | $19.3M | 0.02% | −46,630−26.5% | Reduced |
| AQR Capital Management LLC | 141,137 | $21.1M | 0.04% | +127,117+906.7% | Added |
| Federated Hermes, Inc. | 148,504 | $22.2M | 0.05% | +11,363+8.3% | Added |
| Citigroup Inc | 150,690 | $22.5M | 0.02% | +77,889+107.0% | Added |
| Jane Street Group, LLC | 163,938 | $24.5M | 0.03% | +66,575+68.4% | Added |
| Rhumbline Advisers | 173,689 | $26.0M | 0.02% | +816+0.5% | Added |
| Invesco Ltd. | 178,313 | $26.6M | 0.01% | +1,453+0.8% | Added |
| CIBC Private Wealth Group, LLC | 174,249 | $26.7M | 0.05% | +548+0.3% | Added |
| Janus Henderson Group PLC | 178,954 | $26.7M | 0.01% | −99,127−35.6% | Reduced |
| ADAR1 Capital Management, LLC | 180,145 | $26.9M | 7.35% | +170,645+1,796.3% | Added |
| Palo Alto Investors LP | 182,766 | $27.3M | 3.08% | +28,329+18.3% | Added |
| State Board of Administration of Florida Retirement System | 137,022 | $27.4M | 0.06% | +1,135+0.8% | Added |
| National Pension Service | 186,183 | $27.8M | 0.03% | +18,413+11.0% | Added |
| Two Sigma Advisers, LP | 189,600 | $28.3M | 0.07% | +189,600 | New |
| California State Teachers Retirement System | 191,418 | $28.6M | 0.04% | −160−0.1% | Reduced |
| Barclays PLC | 193,972 | $29.0M | 0.01% | +51,972+36.6% | Added |
| Ameriprise Financial Inc | 194,725 | $29.1M | 0.01% | −182,934−48.4% | Reduced |
| Millennium Management LLC | 202,278 | $30.2M | 0.03% | +165,742+453.6% | Added |
| Antipodes Partners Ltd | 205,579 | $30.7M | 0.97% | +16,438+8.7% | Added |
| Point72 Asset Management, L.P. | 206,255 | $30.8M | 0.09% | +120,265+139.9% | Added |
| Wells Fargo & Company | 206,364 | $30.8M | 0.01% | −23,266−10.1% | Reduced |
| Man Group plc | 210,235 | $31.4M | 0.08% | +167,345+390.2% | Added |
| California Public Employees Retirement System | 214,330 | $32.0M | 0.02% | +35,000+19.5% | Added |
| First Trust Advisors LP | 217,373 | $32.5M | 0.03% | −89,320−29.1% | Reduced |
| Standard Life Aberdeen plc | 219,275 | $32.8M | 0.06% | −13,441−5.8% | Reduced |
| Polar Capital Holdings Plc | 235,000 | $35.1M | 0.21% | +50,000+27.0% | Added |
| Schonfeld Strategic Advisors LLC | 235,606 | $35.2M | 0.28% | +233,653+11,963.8% | Added |
| Franklin Resources Inc | 237,524 | $35.5M | 0.01% | +86,596+57.4% | Added |
| Avidity Partners Management LP | 243,000 | $36.3M | 1.29% | +243,000 | New |
| Rock Springs Capital Management LP | 244,000 | $36.5M | 0.93% | +9,000+3.8% | Added |
| Dimensional Fund Advisors LP | 255,179 | $38.1M | 0.01% | −11,855−4.4% | Reduced |
| Goldman Sachs Group Inc | 260,019 | $38.9M | 0.01% | −31,349−10.8% | Reduced |
| Eagle Asset Management Inc | 258,248 | $39.6M | 0.20% | −4,617−1.8% | Reduced |
| Canada Pension Plan Investment Board | 273,790 | $40.9M | 0.04% | +30,792+12.7% | Added |
| CI Private Wealth, LLC | 274,607 | $41.0M | 0.07% | −890.0% | Reduced |
| Balyasny Asset Management LLC | 287,627 | $43.0M | 0.11% | +287,627 | New |
| Sumitomo Mitsui Trust Holdings, Inc. | 290,996 | $43.5M | 0.03% | −4,283−1.5% | Reduced |
| Avoro Capital Advisors LLC | 300,000 | $44.8M | 0.52% | −811,111−73.0% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 311,852 | $46.6M | 0.11% | −37,268−10.7% | Reduced |
| Candriam Luxembourg S.C.A. | 316,898 | $47.4M | 0.30% | +66,514+26.6% | Added |
| Royal London Asset Management Ltd | 326,869 | $48.9M | 0.12% | +18,045+5.8% | Added |
| Manufacturers Life Insurance Company, The | 337,025 | $50.4M | 0.05% | −3,795−1.1% | Reduced |
| Vestal Point Capital, LP | 350,000 | $52.3M | 4.33% | +315,000+900.0% | Added |
| Casdin Capital, LLC | 358,000 | $53.5M | 3.98% | +163,000+83.6% | Added |
| Royal Bank of Canada | 374,424 | $56.0M | 0.01% | +116,469+45.2% | Added |
| Swiss National Bank | 375,900 | $56.2M | 0.04% | −14,900−3.8% | Reduced |
| Gilder Gagnon Howe & Co LLC | 405,173 | $60.6M | 0.76% | −181,872−31.0% | Reduced |
| Charles Schwab Investment Management Inc | 447,560 | $66.9M | 0.02% | +9,256+2.1% | Added |
| TD Asset Management Inc | 462,348 | $69.1M | 0.06% | −3,737−0.8% | Reduced |
| Bank of America Corp | 484,893 | $72.5M | 0.01% | +168,660+53.3% | Added |
| Deutsche Bank AG | 507,077 | $75.8M | 0.04% | +44,758+9.7% | Added |
| Nuveen Asset Management, LLC | 511,978 | $76.5M | 0.02% | −31,433−5.8% | Reduced |
| Squarepoint Ops LLC | 580,441 | $86.7M | 0.36% | +244,615+72.8% | Added |
| Loomis Sayles & Co L P | 581,851 | $87.0M | 0.12% | −26,877−4.4% | Reduced |
| Morgan Stanley | 675,281 | $100.9M | 0.01% | −131,314−16.3% | Reduced |
| Amundi | 746,064 | $108.3M | 0.05% | +34,372+4.8% | Added |
| Northern Trust Corp | 739,584 | $110.5M | 0.02% | −24,936−3.3% | Reduced |
| Legal & General Group Plc | 750,602 | $112.2M | 0.03% | −7,902−1.0% | Reduced |
| UBS Asset Management Americas Inc | 758,650 | $113.4M | 0.04% | +17,589+2.4% | Added |
| Bank of New York Mellon Corp | 798,445 | $119.3M | 0.02% | −38,686−4.6% | Reduced |
| Deep Track Capital, LP | 832,310 | $124.4M | 3.58% | +832,310 | New |
| Bellevue Group AG | 918,284 | $137.2M | 2.09% | +32,966+3.7% | Added |
| Pictet Asset Management Holding SA | 961,504 | $144.6M | 0.16% | +75,919+8.6% | Added |
| American Century Companies Inc | 1,373,654 | $205.3M | 0.13% | +958,710+231.0% | Added |
| JPMorgan Chase & Co | 1,748,189 | $261.3M | 0.02% | −1,267,952−42.0% | Reduced |
| Geode Capital Management, LLC | 2,001,718 | $298.7M | 0.03% | +74,982+3.9% | Added |
| Norges Bank | 2,292,654 | $342.6M | 0.05% | +252,856+12.4% | Added |
| T. Rowe Price Investment Management, Inc. | 2,872,904 | $429.4M | 0.26% | −553,159−16.1% | Reduced |
| Capital Research Global Investors | 3,144,987 | $470.0M | 0.11% | +214,908+7.3% | Added |
| State Street Corp | 3,191,373 | $477.0M | 0.02% | +72,821+2.3% | Added |
| Capital International Investors | 3,651,217 | $545.7M | 0.11% | +64,560+1.8% | Added |
| Price T Rowe Associates Inc | 3,685,753 | $550.8M | 0.07% | +201,784+5.8% | Added |
| Dodge & Cox | 3,811,480 | $569.6M | 0.33% | +137,170+3.7% | Added |
| Baillie Gifford & Co | 6,623,577 | $989.9M | 0.77% | −343,520−4.9% | Reduced |
| Wellington Management Group LLP | 7,209,005 | $1.08B | 0.19% | −5,193−0.1% | Reduced |
| BlackRock Inc. | 9,025,007 | $1.35B | 0.03% | +503,892+5.9% | Added |
| FMR LLC | 9,967,996 | $1.49B | 0.10% | −344,360−3.3% | Reduced |
| Vanguard Group Inc | 11,994,261 | $1.79B | 0.04% | +50,366+0.4% | Added |
| Capital World Investors | 12,789,236 | $1.91B | 0.32% | −3,385,327−20.9% | Reduced |
| RTW Investments, LP | 0 | $0 | 0.00% | −1,640,559−100.0% | Sold out |