Cohen & Steers, Inc.
- SEC CIK
- 0001284812
- Latest filing
- Aug 14, 2026
IRM holding history
Iron Mountain Inc in every 13F filed by Cohen & Steers, Inc., including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
IRM overviewAll 13F holders of IRMFull Q2 2026 holdings
- Shares (Q2 2026)
- 12,019,735
- Value
- $1.52B
- % of portfolio
- 2.4%
- Quarters held
- 21
- Since Q1 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 12,019,735 | $1.52B | 2.4% | −4,149,606−25.7% | Reduced | Holders |
| Q1 2026 | 16,169,341 | $1.65B | 2.9% | −2,734,375−14.5% | Reduced | Holders |
| Q4 2025 | 18,903,716 | $1.57B | 2.8% | +3,155,034+20.0% | Added | Holders |
| Q3 2025 | 15,748,682 | $1.61B | 2.9% | +1,980,051+14.4% | Added | Holders |
| Q2 2025 | 13,768,631 | $1.41B | 2.6% | +286,729+2.1% | Added | Holders |
| Q1 2025 | 13,481,902 | $1.16B | 2.1% | −1,425,944−9.6% | Reduced | Holders |
| Q4 2024 | 14,907,846 | $1.57B | 3.0% | −2,818,166−15.9% | Reduced | Holders |
| Q3 2024 | 17,726,012 | $2.11B | 3.7% | −5,325,004−23.1% | Reduced | Holders |
| Q2 2024 | 23,051,016 | $2.07B | 4.3% | −604,022−2.6% | Reduced | Holders |
| Q1 2024 | 23,655,038 | $1.90B | 4.0% | +1,179,424+5.2% | Added | Holders |
| Q4 2023 | 22,475,614 | $1.57B | 3.2% | +15,035,937+202.1% | Added | Holders |
| Q3 2023 | 7,439,677 | $442.3M | 1.0% | −286,090−3.7% | Reduced | Holders |
| Q2 2023 | 7,725,767 | $438.9M | 0.9% | +4,798,010+163.9% | Added | Holders |
| Q1 2023 | 2,927,757 | $154.8M | 0.3% | +2,927,651+2,761,934.9% | Added | Holders |
| Q4 2022 | 106 | $5.00K | <0.1% | −693,554−100.0% | Reduced | Holders |
| Q3 2022 | 693,660 | $30.5M | 0.1% | +693,499+430,744.7% | Added | Holders |
| Q2 2022 | 161 | $8.00K | <0.1% | −4,586−96.6% | Reduced | Holders |
| Q1 2022 | 4,747 | $263.0K | <0.1% | −1,597−25.2% | Reduced | Holders |
| Q4 2021 | 6,344 | $332.0K | <0.1% | +6,344 | New | Holders |
| Q3 2021 | 0 | $0 | 0.0% | −14,348−100.0% | Sold out | Holders |
| Q2 2021 | 14,348 | $607.0K | <0.1% | +490+3.5% | Added | Holders |
| Q1 2021 | 13,858 | $513.0K | <0.1% | – | – | Holders |
Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.