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.
13F holders, Q1 2025
Institutional positions in Iron Mountain Inc as of Mar 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 995
- −56 vs. Q4 2024
- Shares held
- 245.2M
- +10.9M (+4.6%) vs. Q4 2024
- Total value
- $21.1B
- −$3.56B (−14.4%) vs. Q4 2024
- New holders
- 88
- 348 more added
- Sold out
- 144
- 401 more reduced
16 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IRM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,173 | $32.4B |
| Q1 2026 | 1,090 | $25.9B |
| Q4 2025 | 1,011 | $21.4B |
| Q3 2025 | 1,017 | $25.5B |
| Q2 2025 | 1,045 | $25.5B |
| Q1 2025 | 995 | $21.1B |
| Q4 2024 | 1,067 | $24.9B |
| Q3 2024 | 1,056 | $28.8B |
| Q2 2024 | 967 | $22.2B |
| Q1 2024 | 938 | $19.0B |
| Q4 2023 | 891 | $16.4B |
| Q3 2023 | 831 | $13.7B |
| Q2 2023 | 817 | $12.9B |
| Q1 2023 | 790 | $12.0B |
| Q4 2022 | 782 | $11.4B |
| Q3 2022 | 743 | $10.0B |
| Q2 2022 | 767 | $10.9B |
| Q1 2022 | 777 | $12.4B |
| Q4 2021 | 754 | $12.0B |
| Q3 2021 | 711 | $9.94B |
| Q2 2021 | 687 | $9.70B |
| Q1 2021 | 630 | $8.44B |
Institutions, Q1 2025
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −86,377−100.0% | Sold out |
| Parallax Volatility Advisers, L.P. | 0 | $0 | 0.00% | −80,698−100.0% | Sold out |
| MinichMacGregor Wealth Management, LLC | 0 | $0 | 0.00% | −73,663−100.0% | Sold out |
| Quantitative Investment Management, LLC | 0 | $0 | 0.00% | −63,416−100.0% | Sold out |
| Mizuho Markets Americas LLC | 0 | $0 | 0.00% | −55,775−100.0% | Sold out |
| Achmea Investment Management B.V. | 0 | $0 | 0.00% | −42,770−100.0% | Sold out |
| Chapin Davis, Inc. | 0 | $0 | 0.00% | −34,819−100.0% | Sold out |
| Terra Nova Asset Management LLC | 0 | $0 | 0.00% | −32,890−100.0% | Sold out |
| Laurion Capital Management LP | 0 | $0 | 0.00% | −30,626−100.0% | Sold out |
| GSI Capital Advisors LLC | 0 | $0 | 0.00% | −26,029−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −22,027−100.0% | Sold out |
| Dorsey Wright & Associates | 0 | $0 | 0.00% | −21,641−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −19,989−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −18,374−100.0% | Sold out |
| Green Alpha Advisors, LLC | 0 | $0 | 0.00% | −15,971−100.0% | Sold out |
| Railway Pension Investments Ltd | 0 | $0 | 0.00% | −15,800−100.0% | Sold out |
| Herbst Group, LLC | 0 | $0 | 0.00% | −13,975−100.0% | Sold out |
| Coppell Advisory Solutions LLC | 0 | $0 | 0.00% | −14,026−100.0% | Sold out |
| Lombard Odier Asset Management (Switzerland) SA | 0 | $0 | 0.00% | −11,965−100.0% | Sold out |
| IMC-Chicago, LLC | 0 | $0 | 0.00% | −10,973−100.0% | Sold out |
| iA Global Asset Management Inc. | 0 | $0 | 0.00% | −10,505−100.0% | Sold out |
| Highland Capital Management, LLC | 0 | $0 | 0.00% | −9,852−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −9,500−100.0% | Sold out |
| Axecap Investments, LLC | 0 | $0 | 0.00% | −9,149−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −9,094−100.0% | Sold out |
| Virtus ETF Advisers LLC | 0 | $0 | 0.00% | −8,983−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −8,707−100.0% | Sold out |
| Allstate Corp | 0 | $0 | 0.00% | −8,513−100.0% | Sold out |
| Fig Financial Advisory Services Inc | 0 | $0 | 0.00% | −8,502−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −8,340−100.0% | Sold out |
| Ibex Wealth Advisors | 0 | $0 | 0.00% | −7,908−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −7,471−100.0% | Sold out |
| Madden Securities Corp | 0 | $0 | 0.00% | −7,300−100.0% | Sold out |
| Pinkerton Retirement Specialists, LLC | 0 | $0 | 0.00% | −7,165−100.0% | Sold out |
| Strategy Asset Managers LLC | 0 | $0 | 0.00% | −7,084−100.0% | Sold out |
| Harvest Fund Management Co., Ltd | 0 | $0 | 0.00% | −6,571−100.0% | Sold out |
| Hartford Funds Management Co LLC | 0 | $0 | 0.00% | −6,082−100.0% | Sold out |
| Goldstone Financial Group, LLC | 0 | $0 | 0.00% | −5,852−100.0% | Sold out |
| Williamson Legacy Group, LLC | 0 | $0 | 0.00% | −5,834−100.0% | Sold out |
| Retireful, LLC | 0 | $0 | 0.00% | −5,423−100.0% | Sold out |
| Secure Asset Management, LLC | 0 | $0 | 0.00% | −5,358−100.0% | Sold out |
| Canada Post Corp Registered Pension Plan | 0 | $0 | 0.00% | −4,957−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −4,936−100.0% | Sold out |
| Moneta Group Investment Advisors LLC | 0 | $0 | 0.00% | −4,931−100.0% | Sold out |
| OneAscent Financial Services LLC | 0 | $0 | 0.00% | −4,751−100.0% | Sold out |
| Groupe la Francaise | 0 | $0 | 0.00% | −4,808−100.0% | Sold out |
| Scotia Capital Inc. | 0 | $0 | 0.00% | −4,618−100.0% | Sold out |
| Atomi Financial Group, Inc. | 0 | $0 | 0.00% | −4,559−100.0% | Sold out |
| Ontario Teachers Pension Plan Board | 0 | $0 | 0.00% | −4,131−100.0% | Sold out |
| Balboa Wealth Partners | 0 | $0 | 0.00% | −4,031−100.0% | Sold out |
| Sienna Gestion | 0 | $0 | 0.00% | −3,844−100.0% | Sold out |
| Trustmark National Bank Trust Department | 0 | $0 | 0.00% | −3,593−100.0% | Sold out |
| Stevens Capital Management LP | 0 | $0 | 0.00% | −3,564−100.0% | Sold out |
| Callan Family Office, LLC | 0 | $0 | 0.00% | −3,461−100.0% | Sold out |
| Cresset Asset Management, LLC | 0 | $0 | 0.00% | −3,317−100.0% | Sold out |
| Johnson Investment Counsel Inc | 0 | $0 | 0.00% | −3,231−100.0% | Sold out |
| Core Wealth Partners LLC | 0 | $0 | 0.00% | −3,127−100.0% | Sold out |
| Yeomans Consulting Group, Inc. | 0 | $0 | 0.00% | −3,104−100.0% | Sold out |
| OneAscent Wealth Management LLC | 0 | $0 | 0.00% | −3,039−100.0% | Sold out |
| Apriem Advisors | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Capital City Trust Co | 0 | $0 | 0.00% | −2,940−100.0% | Sold out |
| Alethea Capital Management, LLC | 0 | $0 | 0.00% | −2,884−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −2,847−100.0% | Sold out |
| Schechter Investment Advisors, LLC | 0 | $0 | 0.00% | −2,846−100.0% | Sold out |
| NorthCrest Asset Manangement, LLC | 0 | $0 | 0.00% | −2,826−100.0% | Sold out |
| Clark Capital Management Group, Inc. | 0 | $0 | 0.00% | −2,776−100.0% | Sold out |
| BSW Wealth Partners | 0 | $0 | 0.00% | −2,723−100.0% | Sold out |
| Kovack Advisors, Inc. | 0 | $0 | 0.00% | −2,542−100.0% | Sold out |
| Personal Cfo Solutions, LLC | 0 | $0 | 0.00% | −2,446−100.0% | Sold out |
| Nwam LLC | 0 | $0 | 0.00% | −2,436−100.0% | Sold out |
| Twelve Points Wealth Management LLC | 0 | $0 | 0.00% | −2,404−100.0% | Sold out |
| Bristlecone Advisors, LLC | 0 | $0 | 0.00% | −2,394−100.0% | Sold out |
| Texas Bank & Trust Co | 0 | $0 | 0.00% | −2,334−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −2,329−100.0% | Sold out |
| Wesbanco Bank Inc | 0 | $0 | 0.00% | −2,329−100.0% | Sold out |
| Strategic Financial Concepts, LLC | 0 | $0 | 0.00% | −2,308−100.0% | Sold out |
| Mayflower Financial Advisors, LLC | 0 | $0 | 0.00% | −2,306−100.0% | Sold out |
| Pegasus Asset Management, Inc. | 0 | $0 | 0.00% | −2,300−100.0% | Sold out |
| Ignite Planners, LLC | 0 | $0 | 0.00% | −2,286−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −2,282−100.0% | Sold out |
| Naples Global Advisors, LLC | 0 | $0 | 0.00% | −2,250−100.0% | Sold out |
| Commerzbank Aktiengesellschaft | 0 | $0 | 0.00% | −2,280−100.0% | Sold out |
| Bingham Private Wealth, LLC | 0 | $0 | 0.00% | −2,241−100.0% | Sold out |
| Mystic Asset Management, Inc. | 0 | $0 | 0.00% | −2,226−100.0% | Sold out |
| Financial Sense Advisors, Inc. | 0 | $0 | 0.00% | −2,216−100.0% | Sold out |
| Community Bank & Trust, Waco, Texas | 0 | $0 | 0.00% | −2,200−100.0% | Sold out |
| HBK Sorce Advisory LLC | 0 | $0 | 0.00% | −2,130−100.0% | Sold out |
| Stiles Financial Services Inc | 0 | $0 | 0.00% | −2,127−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −2,124−100.0% | Sold out |
| Anb Bank | 0 | $0 | 0.00% | −2,116−100.0% | Sold out |
| New Century Financial Group, LLC | 0 | $0 | 0.00% | −2,099−100.0% | Sold out |
| Clayton Financial Group LLC | 0 | $0 | 0.00% | −2,102−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −2,100−100.0% | Sold out |
| Sagespring Wealth Partners, LLC | 0 | $0 | 0.00% | −2,086−100.0% | Sold out |
| Mission Creek Capital Partners, Inc. | 0 | $0 | 0.00% | −2,085−100.0% | Sold out |
| Bridgewater Associates, LP | 0 | $0 | 0.00% | −2,074−100.0% | Sold out |
| Saxony Capital Management, LLC | 0 | $0 | 0.00% | −2,062−100.0% | Sold out |
| Capital Asset Advisory Services LLC | 0 | $0 | 0.00% | −2,032−100.0% | Sold out |
| Moloney Securities Asset Management, LLC | 0 | $0 | 0.00% | −2,034−100.0% | Sold out |
| Syon Capital LLC | 0 | $0 | 0.00% | −2,014−100.0% | Sold out |