Which hedge funds own IRM? IRON MTN INC DEL, Q2 2026 13F holders
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11 of the hedge funds tracked by WhaleCreep disclosed a position in IRM (IRON MTN INC DEL) in their Q2 2026 13F filings, worth $133.7m in total. The largest holder by portfolio weight is Contour Asset Management at 0.7% of its book. 1 manager opened a new position this quarter: D. E. Shaw & Co. 1 exited: Bridgewater Associates.
11tracked managers holding
1opened this quarter
1exited this quarter
Which hedge funds hold IRM? Current holders by portfolio weight
| Manager | As of | Weight of book | Value | Shares | Δ shares | Action |
|---|---|---|---|---|---|---|
| Contour Asset Management | Q2 2026 | 0.7% | $17.4m | 1,274,684 | -12% | reduced |
| Ancora Advisors | Q2 2026 | 0.0% | $2.5m | 19,766 | -5% | reduced |
| Tudor Investment | Q2 2026 | 0.0% | $9.5m | 75,389 | 103% | added |
| Horizon Kinetics | Q2 2026 | 0.0% | $2.3m | 17,845 | -3% | reduced |
| Woodline Partners | Q2 2026 | 0.0% | $8.2m | 64,861 | 12% | added |
| Citadel Advisors | Q2 2026 | 0.0% | $43.3m | 343,168 | -8% | reduced |
| Point72 Asset Management LP | Q2 2026 | 0.0% | $15.6m | 123,262 | -67% | reduced |
| Millennium Management | Q2 2026 | 0.0% | $19.8m | 157,057 | -58% | reduced |
| D. E. Shaw & Co | Q2 2026 | 0.0% | $13.9m | 109,823 | – | new |
| Brevan Howard Capital Management | Q2 2026 | 0.0% | $272.6k | 2,158 | -34% | reduced |
| Renaissance Technologies LLC | Q2 2026 | 0.0% | $972.6k | 7,700 | 221% | added |
Exited since the previous quarter
| Manager | Prior weight | Prior value |
|---|---|---|
| Bridgewater Associates | 0.1% | $479.4k |
How has hedge fund ownership of IRM changed?
| Quarter | Managers holding | Combined value |
|---|---|---|
| Q2 2026 | 11 | $133.7m |
| Q1 2026 | 11 | $149.1m |
| Q4 2025 | 6 | $512.1m |
| Q3 2025 | 5 | $743.6m |
| Q2 2025 | 6 | $143.7m |
| Q1 2025 | 7 | $207.5m |
| Q4 2024 | 5 | $134.1m |
| Q3 2024 | 4 | $45.2m |
| Q2 2024 | 3 | $4.6m |
| Q1 2024 | 6 | $71.5m |
| Q4 2023 | 6 | $49.6m |
| Q3 2023 | 3 | $3.3m |
| Q2 2023 | 6 | $9.5m |
| Q1 2023 | 6 | $8.8m |
| Q4 2022 | 7 | $12.1m |
| Q3 2022 | 7 | $11.7m |
Counts every tracked manager that disclosed IRM in that quarter's filing, including managers that have since stopped filing.