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 |
|---|---|---|---|---|---|
| Capital World Investors | 16,805,007 | $5.48B | 0.80% | +55,384+0.3% | Added |
| FMR LLC | 15,806,521 | $5.15B | 0.29% | +496,661+3.2% | Added |
| Vanguard Group Inc | 13,297,139 | $4.34B | 0.07% | +240,534+1.8% | Added |
| BlackRock, Inc. | 9,980,163 | $3.25B | 0.06% | +420,781+4.4% | Added |
| Capital Research Global Investors | 7,191,656 | $2.35B | 0.47% | +36,928+0.5% | Added |
| Regeneron Pharmaceuticals, Inc. | 4,444,445 | $1.45B | 97.60% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 4,281,279 | $1.40B | 0.88% | −136,866−3.1% | Reduced |
| Dodge & Cox | 3,197,096 | $1.04B | 0.59% | −154,666−4.6% | Reduced |
| State Street Corp | 3,173,105 | $1.03B | 0.04% | −193,478−5.7% | Reduced |
| Price T Rowe Associates Inc | 3,145,006 | $1.03B | 0.12% | −360,162−10.3% | Reduced |
| Baillie Gifford & Co | 3,031,891 | $988.7M | 0.74% | −625,716−17.1% | Reduced |
| Geode Capital Management, LLC | 2,398,770 | $779.9M | 0.05% | +75,936+3.3% | Added |
| Orbis Allan Gray Ltd | 2,121,412 | $691.8M | 3.36% | +486,489+29.8% | Added |
| Wellington Management Group LLP | 2,075,752 | $676.9M | 0.12% | −535,234−20.5% | Reduced |
| JPMorgan Chase & Co | 2,062,008 | $672.4M | 0.05% | −156,864−7.1% | Reduced |
| Norges Bank | 2,032,680 | $662.8M | 0.08% | −103,344−4.8% | Reduced |
| American Century Companies Inc | 1,793,846 | $585.0M | 0.32% | +33,411+1.9% | Added |
| Invesco Ltd. | 1,341,694 | $437.5M | 0.07% | +427,902+46.8% | Added |
| Bank of America Corp | 1,257,328 | $410.0M | 0.03% | +192,755+18.1% | Added |
| Winslow Capital Management, LLC | 1,177,439 | $384.0M | 1.28% | −9,739−0.8% | Reduced |
| UBS Asset Management Americas Inc | 958,336 | $312.5M | 0.06% | +222,225+30.2% | Added |
| Legal & General Group Plc | 872,771 | $284.6M | 0.07% | −8,340−0.9% | Reduced |
| Northern Trust Corp | 831,777 | $271.2M | 0.04% | −33,243−3.8% | Reduced |
| Nuveen, LLC | 774,969 | $252.7M | 0.07% | −108,405−12.3% | Reduced |
| Morgan Stanley | 770,968 | $251.4M | 0.02% | +129,203+20.1% | Added |
| Bellevue Group AG | 676,367 | $220.6M | 4.86% | −91,780−11.9% | Reduced |
| Deutsche Bank AG | 649,284 | $211.7M | 0.08% | +72,291+12.5% | Added |
| Woodline Partners LP | 623,115 | $203.2M | 1.07% | +466,651+298.2% | Added |
| Franklin Resources Inc | 601,331 | $196.1M | 0.05% | +143,017+31.2% | Added |
| Citadel Advisors LLC | 601,199 | $196.0M | 0.17% | +596,963+14,092.6% | Added |
| Macquarie Group Ltd | 600,111 | $195.7M | 0.24% | +527,519+726.7% | Added |
| Holocene Advisors, LP | 596,816 | $194.6M | 0.48% | +596,816 | New |
| Charles Schwab Investment Management Inc | 571,747 | $186.4M | 0.03% | +25,105+4.6% | Added |
| Clearbridge Investments, LLC | 557,099 | $181.7M | 0.15% | +549,322+7,063.4% | Added |
| Goldman Sachs Group Inc | 545,316 | $177.8M | 0.03% | +121,949+28.8% | Added |
| UBS Group AG | 543,486 | $177.2M | 0.04% | +264,848+95.1% | Added |
| Loomis Sayles & Co L P | 487,328 | $158.9M | 0.20% | −10,156−2.0% | Reduced |
| Pictet Asset Management Holding SA | 464,606 | $151.2M | 0.15% | −16,361−3.4% | Reduced |
| TD Asset Management Inc | 441,177 | $143.9M | 0.12% | −45,407−9.3% | Reduced |
| Royal Bank of Canada | 430,835 | $140.5M | 0.03% | +93,604+27.8% | Added |
| Bank of New York Mellon Corp | 429,769 | $140.1M | 0.03% | −45,063−9.5% | Reduced |
| Amundi | 394,179 | $130.0M | 0.04% | −60,816−13.4% | Reduced |
| Swiss National Bank | 393,800 | $128.4M | 0.08% | +29,600+8.1% | Added |
| Jennison Associates LLC | 350,070 | $114.2M | 0.07% | +40,851+13.2% | Added |
| Two Sigma Investments, LP | 343,305 | $111.9M | 0.20% | +145,890+73.9% | Added |
| OrbiMed Advisors LLC | 341,900 | $111.5M | 2.80% | −4,200−1.2% | Reduced |
| Gilder Gagnon Howe & Co LLC | 337,088 | $109.9M | 1.17% | −8,487−2.5% | Reduced |
| Federated Hermes, Inc. | 323,842 | $105.6M | 0.20% | +59,669+22.6% | Added |
| Wells Fargo & Company | 321,824 | $104.9M | 0.02% | +21,744+7.2% | Added |
| SEI Investments Co | 308,619 | $100.6M | 0.12% | +31,250+11.3% | Added |
| Allspring Global Investments Holdings, LLC | 312,216 | $100.6M | 0.17% | +41,292+15.2% | Added |
| Dimensional Fund Advisors LP | 305,563 | $99.6M | 0.02% | −4,256−1.4% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 293,542 | $95.7M | 0.06% | +2,066+0.7% | Added |
| Raymond James Financial Inc | 270,450 | $88.2M | 0.03% | +1,480+0.6% | Added |
| Two Sigma Advisers, LP | 266,100 | $86.8M | 0.18% | −9,700−3.5% | Reduced |
| Royal London Asset Management Ltd | 259,071 | $84.5M | 0.19% | −27,872−9.7% | Reduced |
| First Trust Advisors LP | 251,817 | $82.1M | 0.07% | +71,357+39.5% | Added |
| Citigroup Inc | 248,238 | $80.9M | 0.06% | +53,504+27.5% | Added |
| Marshall Wace, LLP | 238,573 | $77.8M | 0.09% | −30,359−11.3% | Reduced |
| Candriam Luxembourg S.C.A. | 238,084 | $77.6M | 0.45% | −11,835−4.7% | Reduced |
| Polar Capital Holdings Plc | 237,500 | $77.4M | 0.41% | −42,500−15.2% | Reduced |
| 1832 Asset Management L.P. | 223,345 | $72.8M | 0.13% | +79,300+55.1% | Added |
| CIBC Private Wealth Group, LLC | 218,329 | $71.2M | 0.13% | +12,818+6.2% | Added |
| Standard Life Aberdeen plc | 218,624 | $70.4M | 0.12% | +3,239+1.5% | Added |
| California Public Employees Retirement System | 211,581 | $69.0M | 0.04% | +10,100+5.0% | Added |
| Voya Investment Management LLC | 211,045 | $68.8M | 0.07% | +119,901+131.6% | Added |
| Susquehanna International Group, LLP | 208,262 | $67.9M | 0.10% | +137,797+195.6% | Added |
| Allianz Asset Management GmbH | 205,993 | $67.2M | 0.09% | −12,510−5.7% | Reduced |
| Point72 Asset Management, L.P. | 201,396 | $65.7M | 0.16% | −99,239−33.0% | Reduced |
| Rhumbline Advisers | 200,485 | $65.4M | 0.06% | +19,022+10.5% | Added |
| California State Teachers Retirement System | 199,316 | $65.0M | 0.07% | +1,873+0.9% | Added |
| Ameriprise Financial Inc | 193,649 | $63.1M | 0.02% | +84,513+77.4% | Added |
| KBC Group NV | 193,550 | $63.1M | 0.17% | +174,238+902.2% | Added |
| AQR Capital Management LLC | 188,249 | $61.3M | 0.05% | −640,095−77.3% | Reduced |
| Westfield Capital Management Co LP | 186,905 | $60.9M | 0.26% | −5,267−2.7% | Reduced |
| National Pension Service | 175,046 | $57.1M | 0.05% | +1,387+0.8% | Added |
| SCS Capital Management LLC | 170,662 | $55.7M | 0.62% | −415−0.2% | Reduced |
| Arrowstreet Capital, Limited Partnership | 169,700 | $55.3M | 0.04% | +165,645+4,085.0% | Added |
| Victory Capital Management Inc | 156,294 | $51.0M | 0.03% | +118,645+315.1% | Added |
| Handelsbanken Fonder AB | 155,362 | $50.7M | 0.18% | +38,679+33.1% | Added |
| Janus Henderson Group PLC | 150,421 | $49.0M | 0.02% | −31,228−17.2% | Reduced |
| FIL Ltd | 147,937 | $48.2M | 0.04% | +30,075+25.5% | Added |
| Deerfield Management Company, L.P. (Series C) | 145,000 | $47.3M | 0.86% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 128,634 | $41.9M | 0.03% | +86,059+202.1% | Added |
| Capital International Sarl | 128,286 | $41.8M | 0.80% | +7,126+5.9% | Added |
| State Board of Administration of Florida Retirement System | 127,050 | $41.4M | 0.07% | +1,810+1.4% | Added |
| Eventide Asset Management, LLC | 125,902 | $41.1M | 0.72% | −40,548−24.4% | Reduced |
| Antipodes Partners Ltd | 122,804 | $40.0M | 1.24% | −36,750−23.0% | Reduced |
| Worldquant Millennium Advisors LLC | 117,373 | $38.3M | 0.19% | −73,732−38.6% | Reduced |
| Balyasny Asset Management LLC | 115,275 | $37.6M | 0.09% | +102,159+778.9% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 114,366 | $37.3M | 0.07% | −3,354−2.8% | Reduced |
| DekaBank Deutsche Girozentrale | 113,193 | $36.5M | 0.07% | +151+0.1% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 111,785 | $36.5M | 0.03% | +5,906+5.6% | Added |
| Korea Investment CORP | 110,855 | $36.1M | 0.08% | +5,096+4.8% | Added |
| HighTower Advisors, LLC | 109,265 | $35.6M | 0.04% | −4,592−4.0% | Reduced |
| D. E. Shaw & Co., Inc. | 108,276 | $35.3M | 0.04% | −181,586−62.6% | Reduced |
| Soleus Capital Management, L.P. | 106,750 | $34.8M | 2.40% | +106,750 | New |
| Frontier Capital Management Co LLC | 103,003 | $33.6M | 0.31% | +583+0.6% | Added |
| Ensign Peak Advisors, Inc | 100,209 | $32.7M | 0.06% | +19,730+24.5% | Added |
| Rock Springs Capital Management LP | 100,000 | $32.6M | 2.03% | −43,250−30.2% | Reduced |