Which hedge funds own IRON? DISC MEDICINE INC, Q2 2026 13F holders
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10 of the hedge funds tracked by WhaleCreep disclosed a position in IRON (DISC MEDICINE INC) in their Q2 2026 13F filings, worth $290.1m in total. The largest holder by portfolio weight is RA Capital Management at 1.5% of its book. 2 managers opened a new position this quarter: Marshall Wace, D. E. Shaw & Co. 1 exited: Renaissance Technologies LLC.
10tracked managers holding
2opened this quarter
1exited this quarter
Which hedge funds hold IRON? Current holders by portfolio weight
| Manager | As of | Weight of book | Value | Shares | Δ shares | Action |
|---|---|---|---|---|---|---|
| RA Capital Management | Q2 2026 | 1.5% | $179.2m | 2,450,221 | 0% | held |
| Casdin Capital | Q2 2026 | 0.2% | $4.8m | 65,000 | 0% | held |
| Woodline Partners | Q2 2026 | 0.2% | $70.1m | 958,281 | 0% | held |
| Moore Capital Management | Q2 2026 | 0.1% | $4.2m | 57,796 | 0% | held |
| Brevan Howard Capital Management | Q2 2026 | 0.1% | $3.7m | 49,996 | 54% | added |
| Citadel Advisors | Q2 2026 | 0.0% | $15.3m | 209,308 | 114% | added |
| Tudor Investment | Q2 2026 | 0.0% | $2.1m | 28,663 | -8% | reduced |
| Millennium Management | Q2 2026 | 0.0% | $7.8m | 106,248 | 28% | added |
| Marshall Wace | Q2 2026 | 0.0% | $2.5m | 34,394 | – | new |
| D. E. Shaw & Co | Q2 2026 | 0.0% | $440.8k | 6,027 | – | new |
Exited since the previous quarter
| Manager | Prior weight | Prior value |
|---|---|---|
| Renaissance Technologies LLC | 0.0% | $2.0m |
How has hedge fund ownership of IRON changed?
| Quarter | Managers holding | Combined value |
|---|---|---|
| Q2 2026 | 10 | $290.1m |
| Q1 2026 | 9 | $243.4m |
| Q4 2025 | 4 | $243.2m |
| Q3 2025 | 4 | $162.6m |
| Q2 2025 | 3 | $134.5m |
| Q1 2025 | 4 | $116.7m |
| Q4 2024 | 4 | $32.3m |
| Q3 2024 | 2 | $55.7m |
| Q2 2024 | 2 | $46.4m |
| Q1 2024 | 2 | $1.4m |
| Q4 2023 | 1 | $2.8m |
| Q3 2023 | 2 | $5.4m |
| Q2 2023 | 4 | $12.2m |
| Q1 2023 | 1 | $324.0k |
| Q4 2022 | 1 | $258.0k |
Counts every tracked manager that disclosed IRON in that quarter's filing, including managers that have since stopped filing.