Iron Mountain Inc
IRM- Exchange
- NYSE
- Industry
- Real Estate Investment Trusts
- SEC CIK
- 0001020569
In the last 90 days, Iron Mountain Inc insiders filed 0 open-market purchases and 6 sales; 1,173 institutions reported holding it in 13F filings for Q2 2026, worth $32.4B in total; no superinvestor holds it.
Q3 2025 vs. Q2 2025
How the institutions holding Iron Mountain Inc changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Of which not filed for Q3 2025 | Q3 2025 | Change |
|---|---|---|---|---|
| Holders | 1,045 | 15 | 1,017 | −13 |
| Shares | 248.8M | 4.45M | 250.3M | +5.90M (+2.4%) |
| Value | $25.5B | $456.7M | $25.5B | +$450.7M (+1.8%) |
15 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (75)
Institutions that held Iron Mountain Inc at the end of Q3 2025 but not at the end of Q2 2025.
Sold out (88)
Institutions that held Iron Mountain Inc at the end of Q2 2025 and filed for Q3 2025 without it.
Not filed for Q3 2025 yet (15)
Institutions that held Iron Mountain Inc at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| Norges Bank | 4,089,466 | $419.5M |
| CIBC World Markets Corp | 115,626 | $11.9M |
| Avantax Advisory Services, Inc. | 85,172 | $8.74M |
| Congress Wealth Management LLC | 54,950 | $5.64M |
| TFG Advisers LLC | 25,306 | $2.60M |
| Tyler-Stone Wealth Management | 18,607 | $1.91M |
| EP Wealth Advisors, LLC | 17,146 | $1.76M |
| Safe Harbor Fiduciary, LLC | 16,191 | $1.66M |
| Savoie Capital LLC | 11,545 | $1.18M |
| Atria Wealth Solutions, Inc. | 9,205 | $945.4K |
| Atlas Capital Advisors LLC | 4,825 | $494.9K |
| Wambolt & Associates, LLC | 3,509 | $350.7K |
| First Horizon Advisors, Inc. | 703 | $72.1K |
| Oliver Lagore Vanvalin Investment Group | 500 | $43.0K |
| Parkworth Wealth Management, Inc. | 359 | $36.8K |