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 2025
Institutional positions in Iron Mountain Inc as of Jun 30, 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
- 1,045
- +59 vs. Q1 2025
- Shares held
- 248.8M
- +4.03M (+1.6%) vs. Q1 2025
- Total value
- $25.5B
- +$4.48B (+21.3%) vs. Q1 2025
- New holders
- 121
- 391 more added
- Sold out
- 62
- 356 more reduced
9 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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 2025
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| OP Asset Management Ltd | 30,773 | $3.16M | 0.05% | +464+1.5% | Added |
| Erste Asset Management GmbH | 30,816 | $3.15M | 0.03% | +6,316+25.8% | Added |
| Norinchukin Bank, The | 30,596 | $3.14M | 0.05% | +1,928+6.7% | Added |
| Warren Averett Asset Management, LLC | 30,464 | $3.12M | 0.03% | −694−2.2% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 30,350 | $3.11M | 0.01% | +7,087+30.5% | Added |
| Dumont & Blake Investment Advisors LLC | 30,234 | $3.10M | 0.81% | −130−0.4% | Reduced |
| Investor's Fiduciary Advisor Network, LLC | 30,028 | $3.08M | 1.14% | −921−3.0% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 29,843 | $3.06M | 0.01% | −61−0.2% | Reduced |
| Mackenzie Financial Corp | 29,808 | $3.06M | 0.00% | +1,471+5.2% | Added |
| B. Metzler seel. Sohn & Co. AG | 29,635 | $3.04M | 0.03% | +8,442+39.8% | Added |
| D.A. Davidson & Co. | 29,532 | $3.03M | 0.02% | +316+1.1% | Added |
| Tudor Investment Corp Et Al | 29,141 | $2.99M | 0.02% | −20,968−41.8% | Reduced |
| Sage Capital Management, LLC | 29,078 | $2.98M | 1.44% | +150+0.5% | Added |
| Public Employees Retirement Association of Colorado | 28,962 | $2.97M | 0.01% | −1,209−4.0% | Reduced |
| Oddo BHF Asset Management SAS | 27,570 | $2.83M | 0.11% | −22,116−44.5% | Reduced |
| Independent Advisor Alliance | 27,132 | $2.78M | 0.08% | −543−2.0% | Reduced |
| Elo Mutual Pension Insurance Co | 26,933 | $2.76M | 0.06% | −2,991−10.0% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 26,307 | $2.70M | 0.48% | +26,307 | New |
| Aurora Investment Counsel | 25,938 | $2.66M | 1.40% | +494+1.9% | Added |
| Fox Run Management, L.L.C. | 25,922 | $2.66M | 0.44% | +25,922 | New |
| US Bancorp | 25,791 | $2.65M | 0.00% | +1,500+6.2% | Added |
| Shelton Capital Management | 25,663 | $2.63M | 0.06% | −15,000−36.9% | Reduced |
| Oregon Public Employees Retirement Fund | 25,469 | $2.61M | 0.05% | +200+0.8% | Added |
| Moody National Bank Trust Division | 25,424 | $2.61M | 0.24% | +1,474+6.2% | Added |
| TFG Advisers LLC | 25,306 | $2.60M | 0.89% | +68+0.3% | Added |
| CoreFirst Bank & Trust | 24,834 | $2.55M | 1.44% | −240−1.0% | Reduced |
| Wolverine Asset Management LLC | 24,782 | $2.54M | 0.04% | −2,500−9.2% | Reduced |
| Sippican Capital Advisors | 23,712 | $2.43M | 1.77% | 00.0% | Unchanged |
| GeoWealth Management, LLC | 23,632 | $2.42M | 0.09% | −128−0.5% | Reduced |
| F/M Investments LLC | 23,606 | $2.42M | 0.09% | +1,200+5.4% | Added |
| PFG Investments, LLC | 23,599 | $2.42M | 0.14% | +133+0.6% | Added |
| Verition Fund Management LLC | 23,455 | $2.41M | 0.01% | −46,116−66.3% | Reduced |
| Capital Investment Advisors, LLC | 23,379 | $2.40M | 0.04% | −823−3.4% | Reduced |
| Stock Yards Bank & Trust Co | 23,270 | $2.39M | 0.08% | 00.0% | Unchanged |
| Tredje AP-fonden | 23,057 | $2.36M | 0.02% | 00.0% | Unchanged |
| American Assets Capital Advisers, LLC | 22,969 | $2.36M | 2.37% | −34,224−59.8% | Reduced |
| Teachers Retirement System of the State of Kentucky | 22,954 | $2.35M | 0.02% | +353+1.6% | Added |
| ING Groep NV | 22,944 | $2.35M | 0.01% | −6,164−21.2% | Reduced |
| Ancora Advisors, LLC | 22,840 | $2.34M | 0.05% | +100+0.4% | Added |
| Jain Global LLC | 22,776 | $2.34M | 0.04% | +22,776 | New |
| Fiduciary Trust Co | 22,574 | $2.32M | 0.03% | +1,000+4.6% | Added |
| Naviter Wealth, LLC | 22,341 | $2.31M | 0.28% | +1,572+7.6% | Added |
| J.W. Cole Advisors, Inc. | 21,703 | $2.23M | 0.05% | +7,340+51.1% | Added |
| Gables Capital Management Inc. | 21,542 | $2.21M | 1.04% | −3,200−12.9% | Reduced |
| KCM Investment Advisors LLC | 21,327 | $2.19M | 0.07% | +17+0.1% | Added |
| Heritage Trust Co | 21,175 | $2.17M | 0.25% | −328−1.5% | Reduced |
| Fifth Third Bancorp | 21,090 | $2.16M | 0.01% | +499+2.4% | Added |
| Y-Intercept (Hong Kong) Ltd | 21,031 | $2.16M | 0.05% | −26,949−56.2% | Reduced |
| Cascade Investment Group, Inc. | 20,913 | $2.15M | 1.50% | −167−0.8% | Reduced |
| Park Avenue Securities LLC | 20,454 | $2.10M | 0.02% | +7,049+52.6% | Added |
| Mizuho Securities USA LLC | 20,386 | $2.09M | 0.04% | +20,386 | New |
| Kentucky Trust Co | 20,065 | $2.06M | 1.18% | −530−2.6% | Reduced |
| Tower Research Capital LLC (TRC) | 19,882 | $2.04M | 0.05% | +9,184+85.8% | Added |
| Sterling Capital Management LLC | 19,871 | $2.04M | 0.03% | +12,369+164.9% | Added |
| RFG Advisory, LLC | 19,848 | $2.04M | 0.05% | +1,665+9.2% | Added |
| Merit Financial Group, LLC | 19,821 | $2.03M | 0.02% | +4,543+29.7% | Added |
| Aster Capital Management (DIFC) Ltd | 19,478 | $2.00M | 0.45% | +19,478 | New |
| Pensionfund Sabic | 19,300 | $1.98M | 0.56% | 00.0% | Unchanged |
| Zacks Investment Management | 19,272 | $1.98M | 0.02% | +1,587+9.0% | Added |
| Benjamin Edwards Inc | 19,049 | $1.95M | 0.02% | +29+0.2% | Added |
| Kentucky Retirement Systems | 18,654 | $1.91M | 0.06% | −1,222−6.1% | Reduced |
| Lido Advisors, LLC | 18,476 | $1.91M | 0.01% | −14,783−44.4% | Reduced |
| Tyler-Stone Wealth Management | 18,607 | $1.91M | 0.31% | +184+1.0% | Added |
| Madison Asset Management, LLC | 18,531 | $1.90M | 0.02% | 00.0% | Unchanged |
| Westpac Banking Corp | 18,456 | $1.89M | 0.13% | +11,750+175.2% | Added |
| MASTERINVEST Kapitalanlage GmbH | 18,437 | $1.89M | 0.20% | +18,437 | New |
| Commerce Bank | 18,218 | $1.87M | 0.01% | +44+0.2% | Added |
| Flputnam Investment Management Co | 18,076 | $1.85M | 0.03% | +5,326+41.8% | Added |
| Everence Capital Management Inc | 17,790 | $1.82M | 0.12% | +510+3.0% | Added |
| Hartford Investment Management Co | 17,740 | $1.82M | 0.06% | −261−1.4% | Reduced |
| Quantbot Technologies LP | 17,498 | $1.79M | 0.05% | −5,580−24.2% | Reduced |
| DoubleLine ETF Adviser LP | 17,409 | $1.79M | 0.57% | +220+1.3% | Added |
| Bramshill Investments, LLC | 17,217 | $1.77M | 0.18% | −24−0.1% | Reduced |
| EP Wealth Advisors, LLC | 17,146 | $1.76M | 0.01% | +2,210+14.8% | Added |
| Trust Investment Advisors | 17,081 | $1.75M | 1.06% | −1,338−7.3% | Reduced |
| Inspire Trust Co, N.A. | 17,000 | $1.74M | 0.36% | 00.0% | Unchanged |
| IHT Wealth Management, LLC | 16,951 | $1.74M | 0.05% | −138−0.8% | Reduced |
| Avanza Fonder AB | 16,925 | $1.74M | 0.05% | +16,925 | New |
| Jones Financial Companies LLLP | 16,873 | $1.73M | 0.00% | +5,604+49.7% | Added |
| King Luther Capital Management Corp | 16,646 | $1.71M | 0.01% | −395−2.3% | Reduced |
| Highline Wealth Partners LLC | 16,611 | $1.70M | 0.50% | −673−3.9% | Reduced |
| AG2R la Mondiale Gestion D'Actifs | 16,338 | $1.68M | 0.09% | +502+3.2% | Added |
| Wiley Bros.-Aintree Capital, LLC | 16,331 | $1.67M | 0.01% | +6,592+67.7% | Added |
| Claro Advisors LLC | 16,305 | $1.67M | 0.28% | −244−1.5% | Reduced |
| Safe Harbor Fiduciary, LLC | 16,191 | $1.66M | 1.56% | −3,835−19.2% | Reduced |
| Prana Capital Management, LP | 15,876 | $1.63M | 0.06% | +2,860+22.0% | Added |
| Inceptionr LLC | 15,785 | $1.62M | 0.37% | +8,571+118.8% | Added |
| HighPoint Advisor Group LLC | 15,728 | $1.61M | 0.09% | +52+0.3% | Added |
| Creekmur Asset Management LLC | 15,645 | $1.60M | 0.28% | +3,725+31.3% | Added |
| Louisiana State Employees Retirement System | 15,600 | $1.60M | 0.03% | −200−1.3% | Reduced |
| Diversify Advisory Services, LLC | 17,214 | $1.59M | 0.06% | +10,734+165.6% | Added |
| Securian Asset Management, Inc | 15,361 | $1.58M | 0.04% | −184−1.2% | Reduced |
| One Charles Private Wealth Services, LLC | 15,348 | $1.57M | 0.44% | +3,040+24.7% | Added |
| Walleye Trading LLC | 15,285 | $1.57M | 0.04% | +15,285 | New |
| Ossiam | 15,273 | $1.57M | 0.02% | −263−1.7% | Reduced |
| Snowden Capital Advisors LLC | 14,889 | $1.54M | 0.05% | −1,812−10.8% | Reduced |
| Gulf International Bank (UK) Ltd | 14,910 | $1.53M | 0.05% | −1,644−9.9% | Reduced |
| Kestra Private Wealth Services, LLC | 14,827 | $1.52M | 0.02% | +290+2.0% | Added |
| Robeco Institutional Asset Management B.V. | 14,725 | $1.51M | 0.00% | −5,481−27.1% | Reduced |
| Comprehensive Money Management Services LLC | 14,725 | $1.51M | 1.15% | +447+3.1% | Added |