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 8 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 |
|---|---|---|---|---|---|
| Easterly Investment Partners LLC | 34,196 | $4.32M | 0.22% | −27,800−44.8% | Reduced |
| Truist Financial Corp | 33,422 | $4.22M | 0.01% | −609−1.8% | Reduced |
| OP Asset Management Ltd | 33,379 | $4.22M | 0.04% | +2,681+8.7% | Added |
| Jupiter Topco LLC | 33,266 | $4.20M | 0.00% | +33,266 | New |
| Munich Reinsurance Co Stock Corp in Munich | 32,749 | $4.14M | 0.09% | +32,749 | New |
| Allstate Corp | 32,177 | $4.06M | 0.04% | +463+1.5% | Added |
| Elo Mutual Pension Insurance Co | 31,834 | $4.02M | 0.05% | +31,834 | New |
| Smithfield Trust Co | 31,715 | $4.01M | 0.16% | 00.0% | Unchanged |
| Knights of Columbus Asset Advisors LLC | 31,649 | $4.00M | 0.20% | 00.0% | Unchanged |
| Norinchukin Bank, The | 31,291 | $3.95M | 0.04% | −150−0.5% | Reduced |
| Siemens Fonds Invest GmbH | 30,782 | $3.89M | 0.19% | +128+0.4% | Added |
| Mutual of America Capital Management LLC | 30,640 | $3.87M | 0.04% | −825−2.6% | Reduced |
| Buckland Partners Management Co LLC | 30,000 | $3.82M | 1.87% | 00.0% | Unchanged |
| Regions Financial Corp | 29,921 | $3.78M | 0.02% | −9,595−24.3% | Reduced |
| Heritage Trust Co | 29,698 | $3.75M | 0.32% | −100−0.3% | Reduced |
| Elevatus Welath Management | 29,662 | $3.75M | 0.91% | +29,662 | New |
| Gradient Investments LLC | 29,602 | $3.74M | 0.05% | +3,163+12.0% | Added |
| Canada Pension Plan Investment Board | 29,362 | $3.71M | 0.00% | +29,362 | New |
| Avanza Fonder AB | 28,747 | $3.63M | 0.08% | +6,048+26.6% | Added |
| J.W. Cole Advisors, Inc. | 28,494 | $3.60M | 0.06% | −956−3.2% | Reduced |
| US Bancorp | 28,400 | $3.59M | 0.00% | +1,120+4.1% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 28,172 | $3.56M | 0.00% | −112−0.4% | Reduced |
| Cyndeo Wealth Partners, LLC | 28,031 | $3.54M | 0.17% | −1,920−6.4% | Reduced |
| Dumont & Blake Investment Advisors LLC | 27,503 | $3.47M | 0.78% | −701−2.5% | Reduced |
| Cander Asset Management LP | 27,360 | $3.46M | 0.64% | −105,893−79.5% | Reduced |
| Naviter Wealth, LLC | 27,040 | $3.44M | 0.31% | +5,076+23.1% | Added |
| Simmons Bank | 27,160 | $3.43M | 0.20% | +23,615+666.1% | Added |
| Burney Co | 27,160 | $3.43M | 0.09% | −2,908−9.7% | Reduced |
| Merit Financial Group, LLC | 26,724 | $3.38M | 0.02% | +1,691+6.8% | Added |
| Meridian Wealth Advisors, LLC | 26,615 | $3.36M | 0.38% | +1,216+4.8% | Added |
| Fiduciary Trust Co | 26,462 | $3.34M | 0.04% | +6,146+30.3% | Added |
| Independent Advisor Alliance | 25,745 | $3.25M | 0.08% | −42−0.2% | Reduced |
| Metis Global Partners, LLC | 25,667 | $3.24M | 0.07% | +13,725+114.9% | Added |
| Bessemer Group Inc | 25,211 | $3.19M | 0.00% | −4,349−14.7% | Reduced |
| Westpac Banking Corp | 25,195 | $3.18M | 0.20% | +1,884+8.1% | Added |
| NBC Securities, Inc. | 25,089 | $3.17M | 0.21% | −337−1.3% | Reduced |
| Park Avenue Securities LLC | 24,902 | $3.15M | 0.02% | +95+0.4% | Added |
| Erste Asset Management GmbH | 24,000 | $3.12M | 0.02% | +1,000+4.3% | Added |
| Jump Financial, LLC | 24,616 | $3.11M | 0.03% | +15,382+166.6% | Added |
| One Capital Management, LLC | 30,034 | $3.07M | 0.09% | 00.0% | Unchanged |
| PFG Investments, LLC | 24,046 | $3.04M | 0.12% | +477+2.0% | Added |
| Lido Advisors, LLC | 23,651 | $3.01M | 0.01% | +2,943+14.2% | Added |
| Sterling Capital Management LLC | 23,532 | $2.97M | 0.05% | +13,649+138.1% | Added |
| Susquehanna International Group, LLP | 23,476 | $2.97M | 0.00% | −78,604−77.0% | Reduced |
| Mizuho Securities USA LLC | 23,293 | $2.94M | 0.05% | +5,408+30.2% | Added |
| Entropy Technologies, LP | 23,082 | $2.92M | 0.12% | −3,317−12.6% | Reduced |
| Corrado Advisors, LLC | 22,979 | $2.90M | 1.34% | −504−2.1% | Reduced |
| Teachers Retirement System of the State of Kentucky | 22,954 | $2.90M | 0.02% | 00.0% | Unchanged |
| Capital Investment Advisors, LLC | 22,809 | $2.88M | 0.04% | −365−1.6% | Reduced |
| MAI Capital Management | 22,736 | $2.88M | 0.01% | +2,502+12.4% | Added |
| Gulf International Bank (UK) Ltd | 22,470 | $2.84M | 0.06% | −500−2.2% | Reduced |
| CoreFirst Bank & Trust | 22,399 | $2.83M | 1.41% | −230−1.0% | Reduced |
| Fifth Third Bancorp | 22,163 | $2.80M | 0.00% | −777−3.4% | Reduced |
| Nepsis, Inc. | 22,032 | $2.78M | 0.94% | −498−2.2% | Reduced |
| Pasadena Private Wealth, LLC | 21,601 | $2.73M | 0.35% | −90.0% | Reduced |
| Stock Yards Bank & Trust Co | 21,499 | $2.72M | 0.08% | −240−1.1% | Reduced |
| NewEdge Wealth, LLC | 21,343 | $2.70M | 0.03% | +1,978+10.2% | Added |
| KCM Investment Advisors LLC | 21,311 | $2.69M | 0.08% | 00.0% | Unchanged |
| MASTERINVEST Kapitalanlage GmbH | 21,228 | $2.68M | 0.23% | 00.0% | Unchanged |
| Allianz Asset Management GmbH | 21,137 | $2.67M | 0.00% | −1,141−5.1% | Reduced |
| Benjamin Edwards Inc | 21,006 | $2.65M | 0.02% | −810−3.7% | Reduced |
| Saudi Central Bank | 20,823 | $2.63M | 0.03% | +9,912+90.8% | Added |
| Everence Capital Management Inc | 20,717 | $2.62M | 0.14% | 00.0% | Unchanged |
| Sippican Capital Advisors | 20,602 | $2.60M | 1.59% | −2,125−9.4% | Reduced |
| Pensionfund Sabic | 20,300 | $2.56M | 2.74% | 00.0% | Unchanged |
| Nomura Holdings Inc | 20,195 | $2.55M | 0.01% | +10,540+109.2% | Added |
| Brown Advisory Inc | 20,062 | $2.53M | 0.00% | −1,768−8.1% | Reduced |
| Ancora Advisors, LLC | 19,766 | $2.50M | 0.05% | −1,126−5.4% | Reduced |
| Edgestream Partners, L.P. | 19,236 | $2.43M | 0.07% | −821−4.1% | Reduced |
| GEM Realty Capital | 19,231 | $2.43M | 0.21% | 00.0% | Unchanged |
| Gables Capital Management Inc. | 19,192 | $2.42M | 0.88% | −150−0.8% | Reduced |
| Osmosis Investment Management UK Ltd | 19,143 | $2.42M | 0.11% | −38,567−66.8% | Reduced |
| Blue Sparrow, LLC | 19,130 | $2.42M | 0.02% | 00.0% | Unchanged |
| Vectors Research Management, LLC | 18,994 | $2.40M | 0.63% | −5,571−22.7% | Reduced |
| Investment Management Corp of Ontario | 18,935 | $2.39M | 0.03% | −2,200−10.4% | Reduced |
| Ameritas Advisory Services, LLC | 18,870 | $2.38M | 0.05% | +13,412+245.7% | Added |
| Abn Amro Investment Solutions | 18,832 | $2.38M | 0.02% | +3,019+19.1% | Added |
| GeoWealth Management, LLC | 18,781 | $2.37M | 0.07% | −3,363−15.2% | Reduced |
| Emerald Investment Advisers, LLC | 18,535 | $2.34M | 0.16% | +8,717+88.8% | Added |
| Kentucky Retirement Systems | 18,521 | $2.34M | 0.06% | +18,521 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 17,996 | $2.27M | 0.00% | +17,996 | New |
| Horizon Kinetics Asset Management LLC | 17,845 | $2.25M | 0.03% | −560−3.0% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 17,484 | $2.21M | 0.02% | +15,342+716.2% | Added |
| Kentucky Trust Co | 17,465 | $2.21M | 1.06% | −1,400−7.4% | Reduced |
| Alps Advisors Inc | 17,427 | $2.20M | 0.01% | +17,427 | New |
| Community Bank of Raymore | 17,301 | $2.19M | 1.29% | +1,430+9.0% | Added |
| AG2R la Mondiale Gestion D'Actifs | 17,290 | $2.18M | 0.08% | −1,673−8.8% | Reduced |
| Madison Asset Management, LLC | 17,052 | $2.15M | 0.03% | 00.0% | Unchanged |
| RFG Advisory, LLC | 16,910 | $2.14M | 0.03% | −88−0.5% | Reduced |
| Claro Advisors LLC | 16,771 | $2.12M | 0.22% | +32+0.2% | Added |
| Cascade Investment Group, Inc. | 16,756 | $2.12M | 1.19% | −1,025−5.8% | Reduced |
| Integrated Wealth Concepts LLC | 16,688 | $2.11M | 0.01% | +325+2.0% | Added |
| Crescent Grove Advisors, LLC | 16,389 | $2.08M | 0.18% | +335+2.1% | Added |
| SRS Capital Advisors, Inc. | 16,454 | $2.08M | 0.01% | +12,469+312.9% | Added |
| Commerce Bank | 16,371 | $2.07M | 0.01% | −22−0.1% | Reduced |
| Hartford Investment Management Co | 16,354 | $2.07M | 0.06% | −525−3.1% | Reduced |
| Investor's Fiduciary Advisor Network, LLC | 16,270 | $2.06M | 0.70% | −4,357−21.1% | Reduced |
| Summit Trail Advisors, LLC | 15,993 | $2.02M | 0.03% | −1,445−8.3% | Reduced |
| Crossmark Global Holdings, Inc. | 15,990 | $2.02M | 0.03% | +172+1.1% | Added |
| Maryland State Retirement & Pension System | 15,980 | $2.02M | 0.03% | +1,277+8.7% | Added |