Iron MountainIRM
13F holders, Q4 2025 (December 31)1holders
0new positions
0sold out
$82.95avg. 13F price*
At the end of Q4 2025, 1 institutions reported holding Iron Mountain Inc (IRM) in their 13F filings, unchanged from Q3 2025. 0 opened new positions and 0 sold out. The largest holder was Byrne Asset Management LLC ($33K).
- Company
- Iron Mountain Inc
- Filed as
- IRON MTN INC NEW REIT (Q4 2025)
- CUSIP
- 462846106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 0 | $0 |
| Exits | 0 | $0 |
Ownership 1 holders
| Byrne Asset Management LLC | 0.02% | No change | 400 | $33K |
"% of holder's portfolio" is IRM's weight in each manager's 13F, not the share of Iron Mountain Inc the manager owns.