Alnylam PharmaceuticalsALNY
13F holders, Q2 2026 (June 30)793holders
81new positions
77sold out
7famous investors
$300.85avg. 13F price*
At the end of Q2 2026, 793 institutions reported holding Alnylam Pharmaceuticals Inc. (ALNY) in their 13F filings, unchanged from Q1 2026. 81 opened new positions and 77 sold out. The largest holders were FMR LLC ($4.5B), Capital World Investors ($3.4B) and BlackRock, Inc. ($3.3B). 7 famous investors held it, including David E. Shaw (0.2% of D. E. Shaw & Co.'s portfolio), Ray Dalio (0.1% of Bridgewater Associates's portfolio) and Cliff Asness (0.1% of AQR Capital Management's portfolio).
- Company
- Alnylam Pharmaceuticals Inc.
- Sector
- Health Care
- CUSIP
- 02043Q107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 81 | $587.3M |
| Exits | 77 | $110.9M |
All 13F filers, Q1 2026 → Q2 2026: 9,063,783 shares bought and 9,343,214 shares sold, net −279,431 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 793 holders
| FMR LLC | 0.20% | Add +3.0% | 15,023,962 | $4.5B |
| Capital World Investors | 0.40% | Add +3.2% | 11,144,846 | $3.4B |
| BlackRock, Inc. | 0.05% | Add +4.4% | 10,907,675 | $3.3B |
| Capital Research Global Investors | 0.41% | Add +3.0% | 9,750,699 | $2.9B |
| Vanguard Portfolio Management LLC | 0.09% | Add +0.7% | 6,538,390 | $2.0B |
| Vanguard Capital Management LLC | 0.04% | Add +1.4% | 6,029,478 | $1.8B |
| T. Rowe Price Investment Management, Inc. | 1.11% | Add +8.6% | 5,642,173 | $1.7B |
| Invesco Ltd. | 0.09% | Reduce -7.9% | 3,754,318 | $1.1B |
| State Street Corp. | 0.03% | Add +7.0% | 3,555,689 | $1.1B |
| Geode Capital Management, LLC | 0.04% | Reduce -0.9% | 2,635,840 | $791.3M |
| JPMorgan Chase & Co. | 0.05% | Reduce -57.7% | 2,675,517 | $785.3M |
| Baillie Gifford & Co. | 0.67% | Reduce -2.2% | 2,439,889 | $734.5M |
| Norges Bank | 0.07% | — | 2,271,813 | $683.9M |
| Wellington Management Group LLP | 0.11% | Add +9.0% | 2,110,407 | $635.3M |
| Orbis Allan Gray Ltd | 2.06% | Add +48.9% | 1,987,407 | $598.3M |
| Dodge & Cox | 0.31% | Add +1.4% | 1,955,393 | $588.6M |
| Two Sigma Investments, LP | 0.44% | Reduce -5.8% | 1,875,937 | $564.7M |
| American Century Companies Inc. | 0.25% | Add +2.9% | 1,853,956 | $558.1M |
| Clearbridge Investments, LLC | 0.31% | Reduce -7.1% | 1,259,483 | $379.1M |
| T. Rowe Price Associates Inc. | 0.03% | Reduce -19.8% | 1,149,201 | $345.9M |
| D. E. Shaw & Co. | 0.22% | Add +4.3% | 1,104,109 | $332.4M |
| Morgan Stanley | 0.02% | Add +2.9% | 1,032,150 | $310.7M |
| Bank of America Corp. | 0.02% | Add +2.9% | 994,476 | $299.4M |
| Legal & General Group Plc | 0.06% | Reduce -1.1% | 924,561 | $278.3M |
| Manufacturers Life Insurance Company, The | 0.21% | Add +34.9% | 893,795 | $269.1M |
| Northern Trust Corp. | 0.03% | Add +3.4% | 886,900 | $267.0M |
| Royal Bank of Canada | 0.04% | Add +10.7% | 875,859 | $263.7M |
| Vanguard Fiduciary Trust Co. | 0.06% | Add +2.6% | 862,782 | $259.7M |
| Deep Track Capital, LP | 3.66% | New | 825,000 | $248.3M |
| Deutsche Bank AG | 0.07% | Add +7.1% | 815,400 | $245.5M |
| Qube Research & Technologies Ltd | 0.27% | Reduce -4.7% | 798,715 | $240.4M |
| Charles Schwab Investment Management Inc. | 0.03% | Add +12.2% | 755,377 | $227.4M |
| Los Angeles Capital Management LLC | 0.81% | Add +726.5% | 729,635 | $219.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.04% | Add +7.4% | 727,848 | $219.1M |
| AQR Capital Management | 0.08% | Reduce -20.3% | 728,039 | $219.0M |
| Federated Hermes, Inc. | 0.31% | Add +4.7% | 719,905 | $216.7M |
| UBS Group AG | 0.03% | Add +36.6% | 627,004 | $188.7M |
| Amundi | 0.04% | Reduce -17.4% | 617,471 | $185.9M |
| Loomis Sayles & Co. L P | 0.22% | Add +13.3% | 580,187 | $174.7M |
| Goldman Sachs Group Inc. | 0.02% | Add +22.4% | 574,757 | $173.0M |
| Bank of New York Mellon Corp | 0.02% | Add +0.2% | 492,071 | $148.1M |
| Polar Capital Holdings Plc | 0.41% | Add +87.3% | 482,751 | $145.3M |
| Paradigm Biocapital Advisors LP | 2.71% | New | 480,000 | $144.5M |
| Franklin Resources Inc. | 0.03% | Reduce -4.8% | 447,699 | $134.8M |
| First Trust Advisors LP | 0.07% | Add +10.2% | 421,534 | $126.9M |
| Raymond James Financial Inc. | 0.03% | Reduce -3.5% | 392,799 | $118.2M |
| Dimensional Fund Advisors LP | 0.02% | Add +2.0% | 392,022 | $118.0M |
| Swiss National Bank | 0.06% | Reduce -3.5% | 374,080 | $112.6M |
| Massachusetts Financial Services Co. | 0.03% | Reduce -29.3% | 350,560 | $105.5M |
| Canada Pension Plan Investment Board | 0.06% | Add +60.0% | 334,246 | $100.6M |
| Sumitomo Mitsui Trust Group, Inc. | 0.06% | Add +3.5% | 325,379 | $97.9M |
| Millennium Management | 0.07% | Reduce -29.4% | 316,001 | $95.1M |
| Nuveen, LLC | 0.02% | Reduce -2.0% | 315,630 | $95.0M |
| Candriam S.C.A. | 0.43% | Add +40.2% | 314,512 | $94.6M |
| Wells Fargo & Company | 0.02% | Reduce -9.5% | 310,047 | $93.3M |
| Nomura Asset Management International Inc. | 0.14% | Add +15.9% | 300,193 | $90.4M |
| Susquehanna International Group, LLP | 0.08% | Add +69.0% | 294,460 | $88.6M |
| Pictet Asset Management Holding SA | 0.08% | Add +17.1% | 278,613 | $83.3M |
| BNP Paribas Financial Markets | 0.04% | Reduce -3.5% | 271,023 | $81.6M |
| Gilder Gagnon Howe & Co. LLC | 0.84% | Reduce -3.9% | 269,051 | $81.0M |
| Congress Asset Management Co. | 0.49% | Reduce -7.0% | 265,701 | $80.0M |
| Marshall Wace, LLP | 0.07% | Reduce -76.4% | 259,799 | $78.2M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.05% | Add +17.6% | 257,710 | $77.6M |
| California Public Employees Retirement System | 0.04% | Add +11.4% | 254,053 | $76.5M |
| Westfield Capital Management Co. LP | 0.25% | Add +2.8% | 252,383 | $76.0M |
| Korea Investment CORP | 0.14% | Add +23.6% | 247,660 | $74.6M |
| Woodline Partners LP | 0.23% | Add +1.0% | 246,282 | $74.1M |
| Squarepoint Ops LLC | 0.14% | Reduce -45.2% | 233,999 | $70.4M |
| TD Asset Management Inc | 0.06% | Reduce -17.1% | 233,696 | $70.3M |
| Citigroup Inc. | 0.03% | Reduce -13.5% | 227,786 | $68.6M |
| Royal London Asset Management Ltd. | 0.12% | Reduce -0.7% | 213,589 | $64.3M |
| Ameriprise Financial Inc. | 0.01% | Reduce -14.7% | 204,601 | $61.6M |
| California State Teachers Retirement System | 0.06% | Add +1.5% | 199,861 | $60.2M |
| National Pension Service | 0.04% | Add +7.9% | 198,295 | $59.7M |
| Pinebridge Investments LLC | 0.49% | Reduce -27.9% | 195,709 | $58.9M |
| Citadel Advisors | 0.03% | Add +715.8% | 191,029 | $57.5M |
| Robeco Institutional Asset Management B.V. | 0.07% | Add +48.7% | 188,084 | $56.6M |
| Victory Capital Management Inc. | 0.03% | Reduce -11.8% | 172,842 | $52.0M |
| Man Group plc | 0.10% | Reduce -26.4% | 170,907 | $51.4M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.03% | Add +10.8% | 168,664 | $50.8M |
| Rhumbline Advisers | 0.04% | Reduce -15.2% | 165,579 | $49.8M |
| Life Cycle Investment Partners Ltd | 0.23% | Reduce -6.8% | 165,424 | $49.8M |
| CIBC Bancorp USA Inc. | 0.06% | Reduce -3.1% | 163,733 | $49.3M |
| ANTIPODES PARTNERS Ltd | 0.90% | Add +12.5% | 163,533 | $49.2M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.05% | Reduce -10.1% | 161,773 | $48.6M |
| Russell Investments Group, Ltd. | 0.04% | Add +7.3% | 158,228 | $47.5M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.07% | Add +12.5% | 157,223 | $47.2M |
| Capital Fund Management S.A. | 0.34% | Add +11.3% | 155,904 | $46.9M |
| Assenagon Asset Management S.A. | 0.06% | Add +20.8% | 155,695 | $46.9M |
| Vinva Investment Management Ltd | 0.30% | Add +323.4% | 154,972 | $45.5M |
| Hudson Bay Capital Management LP | 0.24% | Add +271.8% | 148,720 | $44.8M |
| Envestnet Asset Management Inc. | 0.01% | Reduce -20.6% | 136,395 | $41.1M |
| Jupiter Topco LLC | 0.02% | — | 135,545 | $40.8M |
| Barclays PLC | 0.01% | Reduce -38.6% | 135,518 | $40.8M |
| LMR Partners LLP | 0.36% | Add +79.8% | 134,214 | $40.4M |
| ProShare Advisors LLC | 0.06% | Reduce -26.1% | 128,514 | $38.7M |
| DekaBank Deutsche Girozentrale | 0.06% | No change | 113,193 | $37.3M |
| Sei Investments Co. | 0.03% | Add +21.6% | 121,960 | $36.7M |
| Voya Investment Management LLC | 0.04% | Reduce -17.9% | 121,903 | $36.7M |
| SCS Capital Management LLC | 0.33% | Reduce -22.7% | 115,549 | $34.8M |
"% of holder's portfolio" is ALNY's weight in each manager's 13F, not the share of Alnylam Pharmaceuticals Inc. the manager owns.