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 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
- $40.1B
- −$3.18B (−7.4%) 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 | $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 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 |
|---|---|---|---|---|---|
| Barclays PLC | 135,518 | $40.8M | 0.01% | −85,105−38.6% | Reduced |
| Jupiter Topco LLC | 135,545 | $40.8M | 0.02% | +135,545 | New |
| Envestnet Asset Management Inc | 136,395 | $41.1M | 0.01% | −35,402−20.6% | Reduced |
| Hudson Bay Capital Management LP | 148,720 | $44.8M | 0.21% | +108,720+271.8% | Added |
| Vinva Investment Management Ltd | 154,972 | $45.5M | 0.31% | +118,371+323.4% | Added |
| Assenagon Asset Management S.A. | 155,695 | $46.9M | 0.06% | +26,799+20.8% | Added |
| Capital Fund Management S.A. | 155,904 | $46.9M | 0.34% | +15,795+11.3% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 157,223 | $47.2M | 0.07% | +17,515+12.5% | Added |
| Russell Investments Group, Ltd. | 158,228 | $47.5M | 0.04% | +10,695+7.2% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 161,773 | $48.6M | 0.05% | −18,239−10.1% | Reduced |
| Antipodes Partners Ltd | 163,533 | $49.2M | 0.90% | +18,223+12.5% | Added |
| CIBC Bancorp USA Inc. | 163,733 | $49.3M | 0.06% | −5,298−3.1% | Reduced |
| Life Cycle Investment Partners Ltd | 165,424 | $49.8M | 0.23% | −12,117−6.8% | Reduced |
| Rhumbline Advisers | 165,579 | $49.8M | 0.04% | −29,698−15.2% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 168,664 | $50.8M | 0.03% | +16,467+10.8% | Added |
| Man Group plc | 170,907 | $51.4M | 0.09% | −61,462−26.5% | Reduced |
| Victory Capital Management Inc | 172,842 | $52.0M | 0.03% | −23,095−11.8% | Reduced |
| Robeco Institutional Asset Management B.V. | 188,084 | $56.6M | 0.07% | +61,621+48.7% | Added |
| Citadel Advisors LLC | 191,029 | $57.5M | 0.03% | +167,614+715.8% | Added |
| Pinebridge Investments LLC | 195,709 | $58.9M | 0.49% | −75,710−27.9% | Reduced |
| National Pension Service | 198,295 | $59.7M | 0.04% | +14,506+7.9% | Added |
| California State Teachers Retirement System | 199,861 | $60.2M | 0.06% | +2,998+1.5% | Added |
| Ameriprise Financial Inc | 204,601 | $61.6M | 0.01% | −35,340−14.7% | Reduced |
| Royal London Asset Management Ltd | 213,589 | $64.3M | 0.12% | −1,486−0.7% | Reduced |
| Citigroup Inc | 227,786 | $68.6M | 0.03% | −35,589−13.5% | Reduced |
| TD Asset Management Inc | 233,696 | $70.3M | 0.06% | −48,152−17.1% | Reduced |
| Squarepoint Ops LLC | 233,999 | $70.4M | 0.14% | −192,724−45.2% | Reduced |
| Woodline Partners LP | 246,282 | $74.1M | 0.23% | +2,399+1.0% | Added |
| Korea Investment CORP | 247,660 | $74.6M | 0.14% | +47,339+23.6% | Added |
| Westfield Capital Management Co LP | 252,383 | $76.0M | 0.25% | +6,844+2.8% | Added |
| California Public Employees Retirement System | 254,053 | $76.5M | 0.04% | +26,056+11.4% | Added |
| Vanguard Asset Management, Ltd | 257,710 | $77.6M | 0.05% | +38,475+17.5% | Added |
| Marshall Wace, LLP | 259,799 | $78.2M | 0.07% | −839,519−76.4% | Reduced |
| Congress Asset Management Co | 265,701 | $80.0M | 0.49% | −20,038−7.0% | Reduced |
| Gilder Gagnon Howe & Co LLC | 269,051 | $81.0M | 0.84% | −11,041−3.9% | Reduced |
| BNP Paribas Arbitrage, SA | 271,023 | $81.6M | 0.04% | −9,942−3.5% | Reduced |
| Pictet Asset Management Holding SA | 278,613 | $83.3M | 0.08% | +40,693+17.1% | Added |
| Susquehanna International Group, LLP | 294,460 | $88.6M | 0.08% | +120,192+69.0% | Added |
| Nomura Asset Management International Inc. | 300,193 | $90.4M | 0.14% | +41,288+15.9% | Added |
| Wells Fargo & Company | 310,047 | $93.3M | 0.02% | −32,716−9.5% | Reduced |
| Candriam Luxembourg S.C.A. | 314,512 | $94.6M | 0.43% | +90,182+40.2% | Added |
| Nuveen, LLC | 315,630 | $95.0M | 0.02% | −6,602−2.0% | Reduced |
| Millennium Management LLC | 316,001 | $95.1M | 0.06% | −131,886−29.4% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 325,379 | $97.9M | 0.06% | +10,962+3.5% | Added |
| Canada Pension Plan Investment Board | 334,246 | $100.6M | 0.06% | +125,308+60.0% | Added |
| Massachusetts Financial Services Co | 350,560 | $105.5M | 0.03% | −145,444−29.3% | Reduced |
| Swiss National Bank | 374,080 | $112.6M | 0.06% | −13,640−3.5% | Reduced |
| Dimensional Fund Advisors LP | 392,022 | $118.0M | 0.02% | +7,817+2.0% | Added |
| Raymond James Financial Inc | 392,799 | $118.2M | 0.03% | −14,157−3.5% | Reduced |
| First Trust Advisors LP | 421,534 | $126.9M | 0.07% | +38,833+10.1% | Added |
| Franklin Resources Inc | 447,699 | $134.8M | 0.03% | −22,691−4.8% | Reduced |
| Paradigm Biocapital Advisors LP | 480,000 | $144.5M | 2.71% | +480,000 | New |
| Polar Capital Holdings Plc | 482,751 | $145.3M | 0.41% | +225,077+87.3% | Added |
| Bank of New York Mellon Corp | 492,071 | $148.1M | 0.02% | +871+0.2% | Added |
| Goldman Sachs Group Inc | 574,757 | $173.0M | 0.02% | +105,369+22.4% | Added |
| Loomis Sayles & Co L P | 580,187 | $174.7M | 0.22% | +68,090+13.3% | Added |
| Amundi | 617,471 | $185.9M | 0.04% | −130,073−17.4% | Reduced |
| UBS Group AG | 627,004 | $188.7M | 0.03% | +168,134+36.6% | Added |
| Federated Hermes, Inc. | 719,905 | $216.7M | 0.31% | +32,089+4.7% | Added |
| AQR Capital Management LLC | 728,039 | $219.0M | 0.08% | −185,065−20.3% | Reduced |
| UBS Asset Management Americas Inc | 727,848 | $219.1M | 0.04% | +50,329+7.4% | Added |
| Los Angeles Capital Management LLC | 729,635 | $219.6M | 0.81% | +641,357+726.5% | Added |
| Charles Schwab Investment Management Inc | 755,377 | $227.4M | 0.03% | +82,021+12.2% | Added |
| Qube Research & Technologies Ltd | 798,715 | $240.4M | 0.27% | −39,472−4.7% | Reduced |
| Deutsche Bank AG | 815,400 | $245.5M | 0.07% | +53,936+7.1% | Added |
| Deep Track Capital, LP | 825,000 | $248.3M | 3.66% | +825,000 | New |
| Vanguard Fiduciary Trust Co | 862,782 | $259.7M | 0.06% | +21,894+2.6% | Added |
| Royal Bank of Canada | 875,859 | $263.7M | 0.04% | +84,344+10.7% | Added |
| Northern Trust Corp | 886,900 | $267.0M | 0.03% | +28,780+3.4% | Added |
| Manufacturers Life Insurance Company, The | 893,795 | $269.1M | 0.21% | +231,430+34.9% | Added |
| Legal & General Group Plc | 924,561 | $278.3M | 0.06% | −10,320−1.1% | Reduced |
| Bank of America Corp | 994,476 | $299.4M | 0.02% | +27,564+2.9% | Added |
| Morgan Stanley | 1,032,150 | $310.7M | 0.02% | +29,469+2.9% | Added |
| D. E. Shaw & Co., Inc. | 1,104,109 | $332.4M | 0.21% | +45,047+4.3% | Added |
| Price T Rowe Associates Inc | 1,149,201 | $345.9M | 0.03% | −283,547−19.8% | Reduced |
| Clearbridge Investments, LLC | 1,259,483 | $379.1M | 0.31% | −96,553−7.1% | Reduced |
| American Century Companies Inc | 1,853,956 | $558.1M | 0.25% | +51,593+2.9% | Added |
| Two Sigma Investments, LP | 1,875,937 | $564.7M | 0.42% | −116,640−5.9% | Reduced |
| Dodge & Cox | 1,955,393 | $588.6M | 0.31% | +26,140+1.4% | Added |
| Orbis Allan Gray Ltd | 1,987,407 | $598.3M | 2.06% | +652,582+48.9% | Added |
| Wellington Management Group LLP | 2,110,407 | $635.3M | 0.11% | +174,482+9.0% | Added |
| Norges Bank | 2,271,813 | $683.9M | 0.07% | +2,271,813 | New |
| Baillie Gifford & Co | 2,439,889 | $734.5M | 0.67% | −53,977−2.2% | Reduced |
| JPMorgan Chase & Co | 2,675,517 | $785.3M | 0.05% | −3,648,235−57.7% | Reduced |
| Geode Capital Management, LLC | 2,635,840 | $791.3M | 0.04% | −24,545−0.9% | Reduced |
| State Street Corp | 3,555,689 | $1.07B | 0.03% | +232,991+7.0% | Added |
| Invesco Ltd. | 3,754,318 | $1.13B | 0.09% | −320,802−7.9% | Reduced |
| T. Rowe Price Investment Management, Inc. | 5,642,173 | $1.70B | 1.11% | +448,849+8.6% | Added |
| Vanguard Capital Management LLC | 6,029,478 | $1.82B | 0.04% | +82,772+1.4% | Added |
| Vanguard Portfolio Management LLC | 6,538,390 | $1.97B | 0.09% | +47,110+0.7% | Added |
| Capital Research Global Investors | 9,750,699 | $2.94B | 0.41% | +279,518+3.0% | Added |
| BlackRock, Inc. | 10,907,675 | $3.28B | 0.05% | +462,767+4.4% | Added |
| Capital World Investors | 11,144,846 | $3.35B | 0.40% | +342,498+3.2% | Added |
| FMR LLC | 15,023,962 | $4.52B | 0.20% | +444,796+3.1% | Added |
| HRT Financial LP | 0 | $0 | 0.00% | −128,633−100.0% | Sold out |
| Parnassus Investments | 0 | $0 | 0.00% | −48,991−100.0% | Sold out |
| FengHe Fund Management Pte. Ltd. | 0 | $0 | 0.00% | −32,500−100.0% | Sold out |
| Varma Mutual Pension Insurance Co | 0 | $0 | 0.00% | −21,100−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −20,470−100.0% | Sold out |
| Public Sector Pension Investment Board | 0 | $0 | 0.00% | −18,014−100.0% | Sold out |