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, Q2 2026
Institutional positions in Iron Mountain Inc as of Jun 30, 2026. 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
- 1,173
- +93 vs. Q1 2026
- Shares held
- 257.1M
- +3.96M (+1.6%) vs. Q1 2026
- Total value
- $32.4B
- +$6.60B (+25.5%) vs. Q1 2026
- New holders
- 154
- 446 more added
- Sold out
- 61
- 386 more reduced
10 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Blue Sparrow, LLC | 19,130 | $2.42M | 0.02% | 00.0% | Unchanged |
| Osmosis Investment Management UK Ltd | 19,143 | $2.42M | 0.11% | −38,567−66.8% | Reduced |
| Gables Capital Management Inc. | 19,192 | $2.42M | 0.88% | −150−0.8% | Reduced |
| GEM Realty Capital | 19,231 | $2.43M | 0.21% | 00.0% | Unchanged |
| Edgestream Partners, L.P. | 19,236 | $2.43M | 0.07% | −821−4.1% | Reduced |
| Ancora Advisors, LLC | 19,766 | $2.50M | 0.05% | −1,126−5.4% | Reduced |
| Brown Advisory Inc | 20,062 | $2.53M | 0.00% | −1,768−8.1% | Reduced |
| Nomura Holdings Inc | 20,195 | $2.55M | 0.01% | +10,540+109.2% | Added |
| Pensionfund Sabic | 20,300 | $2.56M | 2.74% | 00.0% | Unchanged |
| Sippican Capital Advisors | 20,602 | $2.60M | 1.59% | −2,125−9.4% | Reduced |
| Everence Capital Management Inc | 20,717 | $2.62M | 0.14% | 00.0% | Unchanged |
| Saudi Central Bank | 20,823 | $2.63M | 0.03% | +9,912+90.8% | Added |
| Benjamin Edwards Inc | 21,006 | $2.65M | 0.02% | −810−3.7% | Reduced |
| Allianz Asset Management GmbH | 21,137 | $2.67M | 0.00% | −1,141−5.1% | Reduced |
| MASTERINVEST Kapitalanlage GmbH | 21,228 | $2.68M | 0.23% | 00.0% | Unchanged |
| KCM Investment Advisors LLC | 21,311 | $2.69M | 0.08% | 00.0% | Unchanged |
| NewEdge Wealth, LLC | 21,343 | $2.70M | 0.03% | +1,978+10.2% | Added |
| Stock Yards Bank & Trust Co | 21,499 | $2.72M | 0.08% | −240−1.1% | Reduced |
| Pasadena Private Wealth, LLC | 21,601 | $2.73M | 0.35% | −90.0% | Reduced |
| Nepsis, Inc. | 22,032 | $2.78M | 0.94% | −498−2.2% | Reduced |
| Fifth Third Bancorp | 22,163 | $2.80M | 0.00% | −777−3.4% | Reduced |
| CoreFirst Bank & Trust | 22,399 | $2.83M | 1.41% | −230−1.0% | Reduced |
| Gulf International Bank (UK) Ltd | 22,470 | $2.84M | 0.06% | −500−2.2% | Reduced |
| MAI Capital Management | 22,736 | $2.88M | 0.01% | +2,502+12.4% | Added |
| Capital Investment Advisors, LLC | 22,809 | $2.88M | 0.04% | −365−1.6% | Reduced |
| Teachers Retirement System of the State of Kentucky | 22,954 | $2.90M | 0.02% | 00.0% | Unchanged |
| Corrado Advisors, LLC | 22,979 | $2.90M | 1.34% | −504−2.1% | Reduced |
| Entropy Technologies, LP | 23,082 | $2.92M | 0.12% | −3,317−12.6% | Reduced |
| Mizuho Securities USA LLC | 23,293 | $2.94M | 0.05% | +5,408+30.2% | Added |
| Susquehanna International Group, LLP | 23,476 | $2.97M | 0.00% | −78,604−77.0% | Reduced |
| Sterling Capital Management LLC | 23,532 | $2.97M | 0.05% | +13,649+138.1% | Added |
| Lido Advisors, LLC | 23,651 | $3.01M | 0.01% | +2,943+14.2% | Added |
| PFG Investments, LLC | 24,046 | $3.04M | 0.12% | +477+2.0% | Added |
| One Capital Management, LLC | 30,034 | $3.07M | 0.09% | 00.0% | Unchanged |
| Jump Financial, LLC | 24,616 | $3.11M | 0.03% | +15,382+166.6% | Added |
| Erste Asset Management GmbH | 24,000 | $3.12M | 0.02% | +1,000+4.3% | Added |
| Park Avenue Securities LLC | 24,902 | $3.15M | 0.02% | +95+0.4% | Added |
| NBC Securities, Inc. | 25,089 | $3.17M | 0.21% | −337−1.3% | Reduced |
| Westpac Banking Corp | 25,195 | $3.18M | 0.20% | +1,884+8.1% | Added |
| Bessemer Group Inc | 25,211 | $3.19M | 0.00% | −4,349−14.7% | Reduced |
| Metis Global Partners, LLC | 25,667 | $3.24M | 0.07% | +13,725+114.9% | Added |
| Independent Advisor Alliance | 25,745 | $3.25M | 0.08% | −42−0.2% | Reduced |
| Fiduciary Trust Co | 26,462 | $3.34M | 0.04% | +6,146+30.3% | Added |
| Meridian Wealth Advisors, LLC | 26,615 | $3.36M | 0.38% | +1,216+4.8% | Added |
| Merit Financial Group, LLC | 26,724 | $3.38M | 0.02% | +1,691+6.8% | Added |
| Burney Co | 27,160 | $3.43M | 0.09% | −2,908−9.7% | Reduced |
| Simmons Bank | 27,160 | $3.43M | 0.20% | +23,615+666.1% | Added |
| Naviter Wealth, LLC | 27,040 | $3.44M | 0.31% | +5,076+23.1% | Added |
| Cander Asset Management LP | 27,360 | $3.46M | 0.64% | −105,893−79.5% | Reduced |
| Dumont & Blake Investment Advisors LLC | 27,503 | $3.47M | 0.78% | −701−2.5% | Reduced |
| Cyndeo Wealth Partners, LLC | 28,031 | $3.54M | 0.17% | −1,920−6.4% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 28,172 | $3.56M | 0.00% | −112−0.4% | Reduced |
| US Bancorp | 28,400 | $3.59M | 0.00% | +1,120+4.1% | Added |
| J.W. Cole Advisors, Inc. | 28,494 | $3.60M | 0.06% | −956−3.2% | Reduced |
| Avanza Fonder AB | 28,747 | $3.63M | 0.08% | +6,048+26.6% | Added |
| Canada Pension Plan Investment Board | 29,362 | $3.71M | 0.00% | +29,362 | New |
| Gradient Investments LLC | 29,602 | $3.74M | 0.05% | +3,163+12.0% | Added |
| Elevatus Welath Management | 29,662 | $3.75M | 0.91% | +29,662 | New |
| Heritage Trust Co | 29,698 | $3.75M | 0.32% | −100−0.3% | Reduced |
| Regions Financial Corp | 29,921 | $3.78M | 0.02% | −9,595−24.3% | Reduced |
| Buckland Partners Management Co LLC | 30,000 | $3.82M | 1.87% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 30,640 | $3.87M | 0.04% | −825−2.6% | Reduced |
| Siemens Fonds Invest GmbH | 30,782 | $3.89M | 0.19% | +128+0.4% | Added |
| Norinchukin Bank, The | 31,291 | $3.95M | 0.04% | −150−0.5% | Reduced |
| Knights of Columbus Asset Advisors LLC | 31,649 | $4.00M | 0.20% | 00.0% | Unchanged |
| Smithfield Trust Co | 31,715 | $4.01M | 0.16% | 00.0% | Unchanged |
| Elo Mutual Pension Insurance Co | 31,834 | $4.02M | 0.05% | +31,834 | New |
| Allstate Corp | 32,177 | $4.06M | 0.04% | +463+1.5% | Added |
| Munich Reinsurance Co Stock Corp in Munich | 32,749 | $4.14M | 0.09% | +32,749 | New |
| Jupiter Topco LLC | 33,266 | $4.20M | 0.00% | +33,266 | New |
| OP Asset Management Ltd | 33,379 | $4.22M | 0.04% | +2,681+8.7% | Added |
| Truist Financial Corp | 33,422 | $4.22M | 0.01% | −609−1.8% | Reduced |
| Easterly Investment Partners LLC | 34,196 | $4.32M | 0.22% | −27,800−44.8% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 34,219 | $4.32M | 0.04% | +6,407+23.0% | Added |
| Venture Visionary Partners LLC | 34,434 | $4.35M | 0.12% | −7,739−18.4% | Reduced |
| Trinity Legacy Partners, LLC | 36,011 | $4.38M | 0.88% | −2,853−7.3% | Reduced |
| American Trust Investment Advisors, LLC | 34,838 | $4.40M | 2.17% | −2,308−6.2% | Reduced |
| O'Shaughnessy Asset Management, LLC | 35,776 | $4.52M | 0.02% | −9,823−21.5% | Reduced |
| ING Groep NV | 36,581 | $4.62M | 0.02% | +305+0.8% | Added |
| Oregon Public Employees Retirement Fund | 36,589 | $4.62M | 0.05% | +2,700+8.0% | Added |
| Rafferty Asset Management, LLC | 37,029 | $4.68M | 0.01% | +7,921+27.2% | Added |
| Toroso Investments, LLC | 37,168 | $4.69M | 0.01% | +12,905+53.2% | Added |
| Warren Averett Asset Management, LLC | 37,733 | $4.77M | 0.03% | +1,715+4.8% | Added |
| Yousif Capital Management, LLC | 38,277 | $4.83M | 0.05% | −1,637−4.1% | Reduced |
| Pathstone Holdings, LLC | 38,410 | $4.87M | 0.01% | +2,201+6.1% | Added |
| Spirit of America Management Corp | 38,650 | $4.88M | 0.92% | +200+0.5% | Added |
| D.A. Davidson & Co. | 38,708 | $4.89M | 0.03% | +227+0.6% | Added |
| WealthTrust Axiom LLC | 39,223 | $4.95M | 1.11% | −161−0.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 39,438 | $4.98M | 0.03% | −209,448−84.2% | Reduced |
| First National Trust Co | 39,708 | $5.02M | 0.17% | −10,910−21.6% | Reduced |
| Holderness Investments Co | 40,621 | $5.13M | 0.86% | +282+0.7% | Added |
| HRT Financial LP | 41,293 | $5.21M | 0.01% | −87,045−67.8% | Reduced |
| Moors & Cabot, Inc. | 41,490 | $5.24M | 0.20% | +213+0.5% | Added |
| Cinctive Capital Management LP | 42,348 | $5.35M | 0.21% | +42,348 | New |
| Pensionfund DSM Netherlands | 42,500 | $5.37M | 2.76% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 42,548 | $5.37M | 0.03% | −2,237−5.0% | Reduced |
| Pacitti Group Inc. | 42,611 | $5.41M | 1.71% | +3,378+8.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 44,283 | $5.59M | 0.04% | −845−1.9% | Reduced |
| New York Life Investment Management LLC | 44,375 | $5.61M | 0.04% | +182+0.4% | Added |
| British Columbia Investment Management Corp | 44,611 | $5.63M | 0.04% | +3,872+9.5% | Added |