Which hedge funds own ALNY? ALNYLAM PHARMACEUTICALS INC, Q2 2026 13F holders
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13 of the hedge funds tracked by WhaleCreep disclosed a position in ALNY (ALNYLAM PHARMACEUTICALS INC) in their Q2 2026 13F filings, worth $1.4bn in total. The largest holder by portfolio weight is Bronte Capital at 1.2% of its book.
13tracked managers holding
0opened this quarter
0exited this quarter
Which hedge funds hold ALNY? Current holders by portfolio weight
| Manager | As of | Weight of book | Value | Shares | Δ shares | Action |
|---|---|---|---|---|---|---|
| Bronte Capital | Q2 2026 | 1.2% | $10.7m | 35,384 | -5% | reduced |
| Casdin Capital | Q2 2026 | 1.1% | $22.6m | 75,000 | 0% | held |
| Tremblant Capital | Q2 2026 | 0.8% | $28.0m | 92,940 | -2% | reduced |
| Baillie Gifford | Q2 2026 | 0.7% | $663.4m | 2,439,889 | -2% | reduced |
| Woodline Partners | Q2 2026 | 0.2% | $74.1m | 246,282 | 1% | added |
| D. E. Shaw & Co | Q2 2026 | 0.2% | $332.4m | 1,104,109 | 4% | added |
| Bridgewater Associates | Q2 2026 | 0.1% | $30.0m | 99,584 | -7% | reduced |
| Marshall Wace | Q2 2026 | 0.1% | $78.2m | 259,799 | -76% | reduced |
| Millennium Management | Q2 2026 | 0.1% | $95.1m | 316,001 | -29% | reduced |
| Citadel Advisors | Q2 2026 | 0.0% | $57.5m | 191,029 | 716% | added |
| Horizon Kinetics | Q2 2026 | 0.0% | $652.6k | 2,168 | -5% | reduced |
| Brevan Howard Capital Management | Q2 2026 | 0.0% | $338.4k | 1,124 | -76% | reduced |
| Ancora Advisors | Q2 2026 | 0.0% | $3.3k | 11 | 0% | held |
How has hedge fund ownership of ALNY changed?
| Quarter | Managers holding | Combined value |
|---|---|---|
| Q2 2026 | 13 | $1.4bn |
| Q1 2026 | 13 | $1.8bn |
| Q4 2025 | 10 | $1.2bn |
| Q3 2025 | 12 | $1.4bn |
| Q2 2025 | 6 | $1.6bn |
| Q1 2025 | 7 | $1.5bn |
| Q4 2024 | 4 | $1.1bn |
| Q3 2024 | 6 | $1.5bn |
| Q2 2024 | 6 | $1.6bn |
| Q1 2024 | 8 | $1.1bn |
| Q4 2023 | 10 | $1.3bn |
| Q3 2023 | 7 | $2.2bn |
| Q2 2023 | 6 | $1.8bn |
| Q1 2023 | 6 | $1.9bn |
| Q4 2022 | 9 | $3.7bn |
| Q3 2022 | 12 | $2.4bn |
Counts every tracked manager that disclosed ALNY in that quarter's filing, including managers that have since stopped filing.