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 $42.4B in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Jun 30, 2026. 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
- 794
- +8 vs. Q1 2026
- Shares held
- 133.4M
- +2.17M (+1.7%) vs. Q1 2026
- Total value
- $42.3B
- −$988.4M (−2.3%) vs. Q1 2026
- New holders
- 88
- 322 more added
- Sold out
- 80
- 285 more reduced
7 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | $42.4B |
| Q1 2026 | 793 | $43.4B |
| Q4 2025 | 852 | $53.2B |
| Q3 2025 | 823 | $61.3B |
| Q2 2025 | 653 | $43.2B |
| Q1 2025 | 625 | $34.9B |
| Q4 2024 | 594 | $30.1B |
| Q3 2024 | 569 | $34.7B |
| Q2 2024 | 525 | $29.6B |
| Q1 2024 | 499 | $17.6B |
| Q4 2023 | 501 | $23.2B |
| Q3 2023 | 454 | $20.9B |
| Q2 2023 | 477 | $22.6B |
| Q1 2023 | 478 | $26.6B |
| Q4 2022 | 489 | $28.5B |
| Q3 2022 | 497 | $26.9B |
| Q2 2022 | 424 | $16.6B |
| Q1 2022 | 443 | $18.7B |
| Q4 2021 | 435 | $19.0B |
| Q3 2021 | 407 | $21.1B |
| Q2 2021 | 401 | $19.1B |
| Q1 2021 | 391 | $15.4B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 15,023,962 | $4.52B | 0.20% | +444,796+3.1% | Added |
| Capital World Investors | 11,144,846 | $3.35B | 0.40% | +342,498+3.2% | Added |
| BlackRock, Inc. | 10,907,675 | $3.28B | 0.05% | +462,767+4.4% | Added |
| Capital Research Global Investors | 9,750,699 | $2.94B | 0.41% | +279,518+3.0% | Added |
| Banque Cantonale Vaudoise | 7,303 | $2.20B | 0.30% | +1,325+22.2% | Added |
| Vanguard Portfolio Management LLC | 6,538,390 | $1.97B | 0.09% | +47,110+0.7% | Added |
| Vanguard Capital Management LLC | 6,029,478 | $1.82B | 0.04% | +82,772+1.4% | Added |
| T. Rowe Price Investment Management, Inc. | 5,642,173 | $1.70B | 1.11% | +448,849+8.6% | Added |
| Invesco Ltd. | 3,754,318 | $1.13B | 0.09% | −320,802−7.9% | Reduced |
| State Street Corp | 3,555,689 | $1.07B | 0.03% | +232,991+7.0% | Added |
| Geode Capital Management, LLC | 2,635,840 | $791.3M | 0.04% | −24,545−0.9% | Reduced |
| JPMorgan Chase & Co | 2,675,517 | $785.3M | 0.05% | −3,648,235−57.7% | Reduced |
| Baillie Gifford & Co | 2,439,889 | $734.5M | 0.67% | −53,977−2.2% | Reduced |
| Norges Bank | 2,271,813 | $683.9M | 0.07% | +2,271,813 | New |
| Wellington Management Group LLP | 2,110,407 | $635.3M | 0.11% | +174,482+9.0% | Added |
| Orbis Allan Gray Ltd | 1,987,407 | $598.3M | 2.06% | +652,582+48.9% | Added |
| Dodge & Cox | 1,955,393 | $588.6M | 0.31% | +26,140+1.4% | Added |
| Two Sigma Investments, LP | 1,875,937 | $564.7M | 0.42% | −116,640−5.9% | Reduced |
| American Century Companies Inc | 1,853,956 | $558.1M | 0.25% | +51,593+2.9% | Added |
| Clearbridge Investments, LLC | 1,259,483 | $379.1M | 0.31% | −96,553−7.1% | Reduced |
| Price T Rowe Associates Inc | 1,149,201 | $345.9M | 0.03% | −283,547−19.8% | Reduced |
| D. E. Shaw & Co., Inc. | 1,104,109 | $332.4M | 0.21% | +45,047+4.3% | Added |
| Morgan Stanley | 1,032,150 | $310.7M | 0.02% | +29,469+2.9% | Added |
| Bank of America Corp | 994,476 | $299.4M | 0.02% | +27,564+2.9% | Added |
| Legal & General Group Plc | 924,561 | $278.3M | 0.06% | −10,320−1.1% | Reduced |
| Manufacturers Life Insurance Company, The | 893,795 | $269.1M | 0.21% | +231,430+34.9% | Added |
| Northern Trust Corp | 886,900 | $267.0M | 0.03% | +28,780+3.4% | Added |
| Royal Bank of Canada | 875,859 | $263.7M | 0.04% | +84,344+10.7% | Added |
| Vanguard Fiduciary Trust Co | 862,782 | $259.7M | 0.06% | +21,894+2.6% | Added |
| Deep Track Capital, LP | 825,000 | $248.3M | 3.66% | +825,000 | New |
| Deutsche Bank AG | 815,400 | $245.5M | 0.07% | +53,936+7.1% | Added |
| Qube Research & Technologies Ltd | 798,715 | $240.4M | 0.27% | −39,472−4.7% | Reduced |
| Charles Schwab Investment Management Inc | 755,377 | $227.4M | 0.03% | +82,021+12.2% | Added |
| Los Angeles Capital Management LLC | 729,635 | $219.6M | 0.81% | +641,357+726.5% | Added |
| UBS Asset Management Americas Inc | 727,848 | $219.1M | 0.04% | +50,329+7.4% | Added |
| AQR Capital Management LLC | 728,039 | $219.0M | 0.08% | −185,065−20.3% | Reduced |
| Federated Hermes, Inc. | 719,905 | $216.7M | 0.31% | +32,089+4.7% | Added |
| UBS Group AG | 627,004 | $188.7M | 0.03% | +168,134+36.6% | Added |
| Amundi | 617,471 | $185.9M | 0.04% | −130,073−17.4% | Reduced |
| Loomis Sayles & Co L P | 580,187 | $174.7M | 0.22% | +68,090+13.3% | Added |
| Goldman Sachs Group Inc | 574,757 | $173.0M | 0.02% | +105,369+22.4% | Added |
| Bank of New York Mellon Corp | 492,071 | $148.1M | 0.02% | +871+0.2% | Added |
| Polar Capital Holdings Plc | 482,751 | $145.3M | 0.41% | +225,077+87.3% | Added |
| Paradigm Biocapital Advisors LP | 480,000 | $144.5M | 2.71% | +480,000 | New |
| Franklin Resources Inc | 447,699 | $134.8M | 0.03% | −22,691−4.8% | Reduced |
| First Trust Advisors LP | 421,534 | $126.9M | 0.07% | +38,833+10.1% | Added |
| Raymond James Financial Inc | 392,799 | $118.2M | 0.03% | −14,157−3.5% | Reduced |
| Dimensional Fund Advisors LP | 392,022 | $118.0M | 0.02% | +7,817+2.0% | Added |
| Swiss National Bank | 374,080 | $112.6M | 0.06% | −13,640−3.5% | Reduced |
| Massachusetts Financial Services Co | 350,560 | $105.5M | 0.03% | −145,444−29.3% | Reduced |
| Canada Pension Plan Investment Board | 334,246 | $100.6M | 0.06% | +125,308+60.0% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 325,379 | $97.9M | 0.06% | +10,962+3.5% | Added |
| Millennium Management LLC | 316,001 | $95.1M | 0.06% | −131,886−29.4% | Reduced |
| Nuveen, LLC | 315,630 | $95.0M | 0.02% | −6,602−2.0% | Reduced |
| Candriam Luxembourg S.C.A. | 314,512 | $94.6M | 0.43% | +90,182+40.2% | Added |
| Wells Fargo & Company | 310,047 | $93.3M | 0.02% | −32,716−9.5% | Reduced |
| Nomura Asset Management International Inc. | 300,193 | $90.4M | 0.14% | +41,288+15.9% | Added |
| Susquehanna International Group, LLP | 294,460 | $88.6M | 0.08% | +120,192+69.0% | Added |
| Pictet Asset Management Holding SA | 278,613 | $83.3M | 0.08% | +40,693+17.1% | Added |
| BNP Paribas Arbitrage, SA | 271,023 | $81.6M | 0.04% | −9,942−3.5% | Reduced |
| Gilder Gagnon Howe & Co LLC | 269,051 | $81.0M | 0.84% | −11,041−3.9% | Reduced |
| Congress Asset Management Co | 265,701 | $80.0M | 0.49% | −20,038−7.0% | Reduced |
| Marshall Wace, LLP | 259,799 | $78.2M | 0.07% | −839,519−76.4% | Reduced |
| Vanguard Asset Management, Ltd | 257,710 | $77.6M | 0.05% | +38,475+17.5% | Added |
| California Public Employees Retirement System | 254,053 | $76.5M | 0.04% | +26,056+11.4% | Added |
| Westfield Capital Management Co LP | 252,383 | $76.0M | 0.25% | +6,844+2.8% | Added |
| Korea Investment CORP | 247,660 | $74.6M | 0.14% | +47,339+23.6% | Added |
| Woodline Partners LP | 246,282 | $74.1M | 0.23% | +2,399+1.0% | Added |
| Squarepoint Ops LLC | 233,999 | $70.4M | 0.14% | −192,724−45.2% | Reduced |
| TD Asset Management Inc | 233,696 | $70.3M | 0.06% | −48,152−17.1% | Reduced |
| Citigroup Inc | 227,786 | $68.6M | 0.03% | −35,589−13.5% | Reduced |
| Royal London Asset Management Ltd | 213,589 | $64.3M | 0.12% | −1,486−0.7% | Reduced |
| Ameriprise Financial Inc | 204,601 | $61.6M | 0.01% | −35,340−14.7% | Reduced |
| California State Teachers Retirement System | 199,861 | $60.2M | 0.06% | +2,998+1.5% | Added |
| National Pension Service | 198,295 | $59.7M | 0.04% | +14,506+7.9% | Added |
| Pinebridge Investments LLC | 195,709 | $58.9M | 0.49% | −75,710−27.9% | Reduced |
| Citadel Advisors LLC | 191,029 | $57.5M | 0.03% | +167,614+715.8% | Added |
| Robeco Institutional Asset Management B.V. | 188,084 | $56.6M | 0.07% | +61,621+48.7% | Added |
| Victory Capital Management Inc | 172,842 | $52.0M | 0.03% | −23,095−11.8% | Reduced |
| Man Group plc | 170,907 | $51.4M | 0.09% | −61,462−26.5% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 168,664 | $50.8M | 0.03% | +16,467+10.8% | Added |
| Rhumbline Advisers | 165,579 | $49.8M | 0.04% | −29,698−15.2% | Reduced |
| Life Cycle Investment Partners Ltd | 165,424 | $49.8M | 0.23% | −12,117−6.8% | Reduced |
| CIBC Bancorp USA Inc. | 163,733 | $49.3M | 0.06% | −5,298−3.1% | Reduced |
| Antipodes Partners Ltd | 163,533 | $49.2M | 0.90% | +18,223+12.5% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 161,773 | $48.6M | 0.05% | −18,239−10.1% | Reduced |
| Russell Investments Group, Ltd. | 158,228 | $47.5M | 0.04% | +10,695+7.2% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 157,223 | $47.2M | 0.07% | +17,515+12.5% | Added |
| Capital Fund Management S.A. | 155,904 | $46.9M | 0.34% | +15,795+11.3% | Added |
| Assenagon Asset Management S.A. | 155,695 | $46.9M | 0.06% | +26,799+20.8% | Added |
| Vinva Investment Management Ltd | 154,972 | $45.5M | 0.30% | +118,371+323.4% | Added |
| Hudson Bay Capital Management LP | 148,720 | $44.8M | 0.21% | +108,720+271.8% | Added |
| Envestnet Asset Management Inc | 136,395 | $41.1M | 0.01% | −35,402−20.6% | Reduced |
| Jupiter Topco LLC | 135,545 | $40.8M | 0.02% | +135,545 | New |
| Barclays PLC | 135,518 | $40.8M | 0.01% | −85,105−38.6% | Reduced |
| LMR Partners LLP | 134,214 | $40.4M | 0.30% | +59,553+79.8% | Added |
| ProShare Advisors LLC | 128,514 | $38.7M | 0.06% | −45,499−26.1% | Reduced |
| DekaBank Deutsche Girozentrale | 113,193 | $37.3M | 0.06% | 00.0% | Unchanged |
| SEI Investments Co | 121,960 | $36.7M | 0.03% | +21,645+21.6% | Added |
| Voya Investment Management LLC | 121,903 | $36.7M | 0.03% | −26,585−17.9% | Reduced |