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, Q4 2023
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Dec 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
- 501
- +53 vs. Q3 2023
- Shares held
- 117.1M
- −655.2K (−0.6%) vs. Q3 2023
- Total value
- $22.4B
- +$1.57B (+7.5%) vs. Q3 2023
- New holders
- 97
- 166 more added
- Sold out
- 44
- 161 more reduced
6 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital World Investors | 16,174,563 | $3.10B | 0.55% | −354,745−2.1% | Reduced |
| Vanguard Group Inc | 11,943,895 | $2.29B | 0.05% | +287,064+2.5% | Added |
| FMR LLC | 10,312,356 | $1.97B | 0.15% | −969,050−8.6% | Reduced |
| BlackRock Inc. | 8,521,115 | $1.63B | 0.04% | +128,111+1.5% | Added |
| Wellington Management Group LLP | 7,214,198 | $1.38B | 0.26% | +782,384+12.2% | Added |
| Baillie Gifford & Co | 6,967,097 | $1.33B | 1.06% | −1,196,042−14.7% | Reduced |
| Dodge & Cox | 3,674,310 | $703.3M | 0.45% | −72,845−1.9% | Reduced |
| Capital International Investors | 3,586,657 | $686.6M | 0.15% | +488,814+15.8% | Added |
| Price T Rowe Associates Inc | 3,483,969 | $666.9M | 0.09% | −441,035−11.2% | Reduced |
| T. Rowe Price Investment Management, Inc. | 3,426,063 | $655.8M | 0.43% | +27,204+0.8% | Added |
| State Street Corp | 3,118,552 | $596.9M | 0.03% | +219,039+7.6% | Added |
| JPMorgan Chase & Co | 3,016,141 | $577.3M | 0.06% | −70,705−2.3% | Reduced |
| Capital Research Global Investors | 2,930,079 | $560.9M | 0.14% | +146,236+5.3% | Added |
| Norges Bank | 2,039,798 | $390.4M | 0.07% | +846,232+70.9% | Added |
| Geode Capital Management, LLC | 1,926,736 | $368.2M | 0.04% | +87,231+4.7% | Added |
| RTW Investments, LP | 1,640,559 | $314.0M | 4.91% | −42,803−2.5% | Reduced |
| Avoro Capital Advisors LLC | 1,111,111 | $212.7M | 2.94% | +100,000+9.9% | Added |
| Pictet Asset Management Holding SA | 885,585 | $169.5M | 0.19% | +94,830+12.0% | Added |
| Bellevue Group AG | 885,318 | $169.5M | 2.59% | −9,027−1.0% | Reduced |
| Bank of New York Mellon Corp | 837,131 | $160.2M | 0.03% | +470.0% | Added |
| Morgan Stanley | 806,595 | $154.4M | 0.01% | −402,788−33.3% | Reduced |
| Northern Trust Corp | 764,520 | $146.3M | 0.03% | −33,180−4.2% | Reduced |
| Legal & General Group Plc | 758,504 | $145.2M | 0.05% | −36,167−4.6% | Reduced |
| UBS Asset Management Americas Inc | 741,061 | $141.8M | 0.06% | −33,415−4.3% | Reduced |
| Amundi | 711,692 | $141.1M | 0.06% | +97,333+15.8% | Added |
| Loomis Sayles & Co L P | 608,728 | $116.5M | 0.18% | −16,673−2.7% | Reduced |
| Gilder Gagnon Howe & Co LLC | 587,045 | $112.4M | 1.54% | −7,934−1.3% | Reduced |
| Nuveen Asset Management, LLC | 543,411 | $104.0M | 0.03% | −3,047−0.6% | Reduced |
| Alliancebernstein L.P. | 520,839 | $99.7M | 0.04% | −19,867−3.7% | Reduced |
| TD Asset Management Inc | 466,085 | $89.2M | 0.09% | −29,279−5.9% | Reduced |
| Deutsche Bank AG | 462,319 | $88.5M | 0.05% | −537−0.1% | Reduced |
| Charles Schwab Investment Management Inc | 438,304 | $83.9M | 0.02% | +19,324+4.6% | Added |
| American Century Companies Inc | 414,944 | $79.4M | 0.05% | −27,799−6.3% | Reduced |
| Swiss National Bank | 390,800 | $74.8M | 0.05% | −9,800−2.4% | Reduced |
| Ameriprise Financial Inc | 377,659 | $72.3M | 0.02% | −328,541−46.5% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 349,120 | $66.8M | 0.16% | −37,552−9.7% | Reduced |
| Manufacturers Life Insurance Company, The | 340,820 | $65.2M | 0.04% | −15,043−4.2% | Reduced |
| Squarepoint Ops LLC | 335,826 | $64.3M | 0.26% | +98,192+41.3% | Added |
| Bank of America Corp | 316,233 | $60.5M | 0.01% | −34,920−9.9% | Reduced |
| Royal London Asset Management Ltd | 308,824 | $59.1M | 0.17% | +2,229+0.7% | Added |
| First Trust Advisors LP | 306,693 | $58.7M | 0.06% | +73,203+31.4% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 295,279 | $56.5M | 0.04% | −1,421−0.5% | Reduced |
| Goldman Sachs Group Inc | 291,368 | $55.8M | 0.01% | −20,677−6.6% | Reduced |
| Janus Henderson Group PLC | 278,081 | $53.2M | 0.03% | −15,409−5.3% | Reduced |
| CI Private Wealth, LLC | 274,696 | $52.6M | 0.10% | +1,579+0.6% | Added |
| Dimensional Fund Advisors LP | 267,034 | $51.1M | 0.01% | +15,123+6.0% | Added |
| Eagle Asset Management Inc | 262,865 | $50.3M | 0.27% | +185+0.1% | Added |
| Royal Bank of Canada | 257,955 | $49.4M | 0.01% | +13,849+5.7% | Added |
| Candriam Luxembourg S.C.A. | 250,384 | $47.9M | 0.33% | −78,510−23.9% | Reduced |
| Canada Pension Plan Investment Board | 242,998 | $46.5M | 0.06% | +91,700+60.6% | Added |
| Rock Springs Capital Management LP | 235,000 | $45.0M | 1.11% | −44,500−15.9% | Reduced |
| Standard Life Aberdeen plc | 232,716 | $44.5M | 0.10% | +209,691+910.7% | Added |
| Wells Fargo & Company | 229,630 | $44.0M | 0.01% | −36,105−13.6% | Reduced |
| Swedbank AB | 220,639 | $42.2M | 0.07% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 200,460 | $38.4M | 0.11% | −1,445−0.7% | Reduced |
| Casdin Capital, LLC | 195,000 | $37.3M | 3.68% | −5,000−2.5% | Reduced |
| California State Teachers Retirement System | 191,578 | $36.7M | 0.05% | +1,347+0.7% | Added |
| Antipodes Partners Ltd | 189,141 | $36.2M | 1.13% | +77,307+69.1% | Added |
| Polar Capital Holdings Plc | 185,000 | $35.4M | 0.25% | −50,000−21.3% | Reduced |
| California Public Employees Retirement System | 179,330 | $34.3M | 0.03% | −48,500−21.3% | Reduced |
| Invesco Ltd. | 176,860 | $33.9M | 0.01% | −39,709−18.3% | Reduced |
| Credit Suisse AG | 175,976 | $33.7M | 0.03% | +10,564+6.4% | Added |
| CIBC Private Wealth Group, LLC | 173,701 | $33.2M | 0.07% | −429−0.2% | Reduced |
| Rhumbline Advisers | 172,873 | $33.1M | 0.03% | +802+0.5% | Added |
| National Pension Service | 167,770 | $32.1M | 0.04% | 00.0% | Unchanged |
| AXA S.A. | 167,053 | $32.0M | 0.10% | −10,424−5.9% | Reduced |
| Palo Alto Investors LP | 154,437 | $29.6M | 2.66% | +154,437 | New |
| Franklin Resources Inc | 150,928 | $28.9M | 0.01% | +634+0.4% | Added |
| Barclays PLC | 142,000 | $27.2M | 0.01% | −20,195−12.5% | Reduced |
| DekaBank Deutsche Girozentrale | 137,885 | $26.8M | 0.05% | −5,215−3.6% | Reduced |
| Federated Hermes, Inc. | 137,141 | $26.3M | 0.07% | +137,141 | New |
| Eagle Health Investments LP | 136,756 | $26.2M | 5.32% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 135,887 | $26.0M | 0.05% | +4,677+3.6% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 125,379 | $24.0M | 0.07% | +12,249+10.8% | Added |
| HighTower Advisors, LLC | 124,220 | $23.8M | 0.04% | −219−0.2% | Reduced |
| Novo Holdings A/S | 118,383 | $22.7M | 1.51% | 00.0% | Unchanged |
| Massachusetts Financial Services Co | 112,240 | $21.5M | 0.01% | −575,988−83.7% | Reduced |
| New York State Common Retirement Fund | 111,914 | $21.4M | 0.03% | −13,049−10.4% | Reduced |
| Capital International Inc | 100,022 | $19.1M | 0.30% | +3,549+3.7% | Added |
| Jane Street Group, LLC | 97,363 | $18.6M | 0.02% | +42,327+76.9% | Added |
| D. E. Shaw & Co., Inc. | 95,544 | $18.3M | 0.03% | −108,548−53.2% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 93,257 | $17.9M | 0.10% | +320.0% | Added |
| Tobam | 91,041 | $17.4M | 1.52% | −12,003−11.6% | Reduced |
| UBS Group AG | 90,473 | $17.3M | 0.01% | +20,571+29.4% | Added |
| Capital International Ltd | 88,385 | $16.9M | 0.87% | −4,571−4.9% | Reduced |
| Ensign Peak Advisors, Inc | 87,597 | $16.8M | 0.03% | +28,373+47.9% | Added |
| Capital International Sarl | 87,357 | $16.7M | 0.63% | +435+0.5% | Added |
| Eventide Asset Management, LLC | 87,000 | $16.7M | 0.27% | +87,000 | New |
| Treasurer of the State of North Carolina | 86,697 | $16.6M | 0.08% | +740+0.9% | Added |
| Point72 Asset Management, L.P. | 85,990 | $16.5M | 0.05% | +85,990 | New |
| APG Asset Management N.V. | 93,273 | $16.2M | 0.03% | −4,286−4.4% | Reduced |
| Voya Investment Management LLC | 84,123 | $16.1M | 0.02% | −69,981−45.4% | Reduced |
| BNP Paribas Arbitrage, SA | 82,704 | $15.8M | 0.03% | +31,301+60.9% | Added |
| Hudson Bay Capital Management LP | 82,500 | $15.8M | 0.14% | +36,600+79.7% | Added |
| OrbiMed Advisors LLC | 79,400 | $15.2M | 0.30% | +79,400 | New |
| FIL Ltd | 76,837 | $14.7M | 0.02% | −13,131−14.6% | Reduced |
| Handelsbanken Fonder AB | 74,898 | $14.3M | 0.07% | −94,845−55.9% | Reduced |
| State of New Jersey Common Pension Fund D | 73,259 | $14.0M | 0.05% | +1,674+2.3% | Added |
| Citigroup Inc | 72,801 | $13.9M | 0.02% | −6,698−8.4% | Reduced |
| Neuberger Berman Group LLC | 71,664 | $13.7M | 0.01% | −18,176−20.2% | Reduced |