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 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 |
|---|---|---|---|---|---|
| Assenagon Asset Management S.A. | 11,538 | $1.18M | 0.00% | 00.0% | Unchanged |
| Savoie Capital LLC | 11,545 | $1.18M | 0.15% | 00.0% | Unchanged |
| TCG Advisory Services, LLC | 11,570 | $1.19M | 0.04% | +900+8.4% | Added |
| Delta Capital Management LLC | 11,610 | $1.19M | 0.67% | 00.0% | Unchanged |
| Kessler Investment Group, LLC | 11,728 | $1.20M | 0.49% | +646+5.8% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 11,769 | $1.21M | 0.00% | −54,233−82.2% | Reduced |
| Summit Financial, LLC | 11,882 | $1.23M | 0.03% | +5,703+92.3% | Added |
| Kinneret Advisory, LLC | 11,896 | $1.23M | 0.11% | −19−0.2% | Reduced |
| Segall Bryant & Hamill, LLC | 12,009 | $1.23M | 0.02% | 00.0% | Unchanged |
| Cary Street Partners Financial LLC | 12,185 | $1.25M | 0.04% | −253−2.0% | Reduced |
| Widmann Financial Services, Inc. | 12,194 | $1.25M | 0.87% | 00.0% | Unchanged |
| Arista Wealth Management, LLC | 12,301 | $1.26M | 0.17% | +12,301 | New |
| Natixis | 12,358 | $1.27M | 0.01% | −7,223−36.9% | Reduced |
| Roman Butler Fullerton & Co | 12,821 | $1.27M | 0.38% | −40−0.3% | Reduced |
| HM Payson & Co | 12,526 | $1.28M | 0.02% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 12,605 | $1.29M | 0.01% | +385+3.2% | Added |
| E. Ohman J:or Asset Management AB | 12,703 | $1.30M | 0.03% | −900−6.6% | Reduced |
| Burling Wealth Partners, LLC | 12,730 | $1.31M | 0.24% | −2,797−18.0% | Reduced |
| Focus Financial Network, Inc. | 12,685 | $1.31M | 0.05% | +875+7.4% | Added |
| Toroso Investments, LLC | 12,792 | $1.31M | 0.01% | −5,813−31.2% | Reduced |
| Brown Advisory Inc | 12,885 | $1.32M | 0.00% | +331+2.6% | Added |
| Wealthcare Advisory Partners LLC | 13,009 | $1.33M | 0.03% | +187+1.5% | Added |
| Coppell Advisory Solutions LLC | 13,061 | $1.34M | 0.16% | +13,061 | New |
| AE Wealth Management LLC | 13,062 | $1.34M | 0.01% | +942+7.8% | Added |
| Redhawk Wealth Advisors, Inc. | 13,086 | $1.34M | 0.17% | −288−2.2% | Reduced |
| Dai-Ichi Life Insurance Company, Ltd | 13,089 | $1.34M | 0.04% | −4,738−26.6% | Reduced |
| Community Bank of Raymore | 13,341 | $1.37M | 1.01% | 00.0% | Unchanged |
| Crescent Grove Advisors, LLC | 13,255 | $1.37M | 0.13% | +201+1.5% | Added |
| Spire Wealth Management | 13,478 | $1.38M | 0.05% | −1,695−11.2% | Reduced |
| New Mexico Educational Retirement Board | 13,740 | $1.41M | 0.05% | 00.0% | Unchanged |
| Apollon Wealth Management, LLC | 13,795 | $1.41M | 0.03% | +217+1.6% | Added |
| Schroder Investment Management Group | 13,817 | $1.42M | 0.00% | +789+6.1% | Added |
| Reik & Co., LLC | 13,980 | $1.43M | 0.36% | 00.0% | Unchanged |
| Oppenheimer Asset Management Inc. | 14,016 | $1.44M | 0.02% | +1,173+9.1% | Added |
| Truvestments Capital LLC | 14,160 | $1.45M | 0.29% | −151−1.1% | Reduced |
| Brookfield Asset Management Inc. | 14,193 | $1.46M | 0.00% | +171+1.2% | Added |
| Moody Lynn & Lieberson, LLC | 14,210 | $1.46M | 0.08% | +665+4.9% | Added |
| RSM US Wealth Management LLC | 14,093 | $1.46M | 0.02% | +675+5.0% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 14,219 | $1.46M | 0.01% | +2,598+22.4% | Added |
| Maryland State Retirement & Pension System | 14,259 | $1.46M | 0.03% | +650+4.8% | Added |
| Beacon Financial Advisory LLC | 14,262 | $1.46M | 0.38% | −115−0.8% | Reduced |
| Corrado Advisors, LLC | 14,277 | $1.46M | 0.90% | −367−2.5% | Reduced |
| Metis Global Partners, LLC | 14,323 | $1.47M | 0.04% | −1,102−7.1% | Reduced |
| Denali Advisors LLC | 14,416 | $1.48M | 0.15% | −170−1.2% | Reduced |
| Royal Fund Management, LLC | 14,560 | $1.49M | 0.16% | +1,248+9.4% | 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 |
| Kestra Private Wealth Services, LLC | 14,827 | $1.52M | 0.02% | +290+2.0% | Added |
| Gulf International Bank (UK) Ltd | 14,910 | $1.53M | 0.05% | −1,644−9.9% | Reduced |
| Snowden Capital Advisors LLC | 14,889 | $1.54M | 0.05% | −1,812−10.8% | Reduced |
| Ossiam | 15,273 | $1.57M | 0.02% | −263−1.7% | Reduced |
| Walleye Trading LLC | 15,285 | $1.57M | 0.04% | +15,285 | New |
| One Charles Private Wealth Services, LLC | 15,348 | $1.57M | 0.44% | +3,040+24.7% | Added |
| Securian Asset Management, Inc | 15,361 | $1.58M | 0.04% | −184−1.2% | Reduced |
| Diversify Advisory Services, LLC | 17,214 | $1.59M | 0.06% | +10,734+165.6% | Added |
| Louisiana State Employees Retirement System | 15,600 | $1.60M | 0.03% | −200−1.3% | Reduced |
| Creekmur Asset Management LLC | 15,645 | $1.60M | 0.28% | +3,725+31.3% | Added |
| HighPoint Advisor Group LLC | 15,728 | $1.61M | 0.09% | +52+0.3% | Added |
| Inceptionr LLC | 15,785 | $1.62M | 0.37% | +8,571+118.8% | Added |
| Prana Capital Management, LP | 15,876 | $1.63M | 0.06% | +2,860+22.0% | Added |
| Safe Harbor Fiduciary, LLC | 16,191 | $1.66M | 1.56% | −3,835−19.2% | Reduced |
| Claro Advisors LLC | 16,305 | $1.67M | 0.28% | −244−1.5% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 16,331 | $1.67M | 0.01% | +6,592+67.7% | Added |
| AG2R la Mondiale Gestion D'Actifs | 16,338 | $1.68M | 0.09% | +502+3.2% | Added |
| Highline Wealth Partners LLC | 16,611 | $1.70M | 0.50% | −673−3.9% | Reduced |
| King Luther Capital Management Corp | 16,646 | $1.71M | 0.01% | −395−2.3% | Reduced |
| Jones Financial Companies LLLP | 16,873 | $1.73M | 0.00% | +5,604+49.7% | Added |
| Avanza Fonder AB | 16,925 | $1.74M | 0.05% | +16,925 | New |
| IHT Wealth Management, LLC | 16,951 | $1.74M | 0.05% | −138−0.8% | Reduced |
| Inspire Trust Co, N.A. | 17,000 | $1.74M | 0.36% | 00.0% | Unchanged |
| Trust Investment Advisors | 17,081 | $1.75M | 1.06% | −1,338−7.3% | Reduced |
| EP Wealth Advisors, LLC | 17,146 | $1.76M | 0.01% | +2,210+14.8% | Added |
| Bramshill Investments, LLC | 17,217 | $1.77M | 0.18% | −24−0.1% | Reduced |
| DoubleLine ETF Adviser LP | 17,409 | $1.79M | 0.57% | +220+1.3% | Added |
| Quantbot Technologies LP | 17,498 | $1.79M | 0.05% | −5,580−24.2% | Reduced |
| Hartford Investment Management Co | 17,740 | $1.82M | 0.06% | −261−1.4% | Reduced |
| Everence Capital Management Inc | 17,790 | $1.82M | 0.12% | +510+3.0% | Added |
| Flputnam Investment Management Co | 18,076 | $1.85M | 0.03% | +5,326+41.8% | Added |
| Commerce Bank | 18,218 | $1.87M | 0.01% | +44+0.2% | Added |
| MASTERINVEST Kapitalanlage GmbH | 18,437 | $1.89M | 0.20% | +18,437 | New |
| Westpac Banking Corp | 18,456 | $1.89M | 0.13% | +11,750+175.2% | Added |
| Madison Asset Management, LLC | 18,531 | $1.90M | 0.02% | 00.0% | Unchanged |
| Tyler-Stone Wealth Management | 18,607 | $1.91M | 0.31% | +184+1.0% | Added |
| Lido Advisors, LLC | 18,476 | $1.91M | 0.01% | −14,783−44.4% | Reduced |
| Kentucky Retirement Systems | 18,654 | $1.91M | 0.06% | −1,222−6.1% | Reduced |
| Benjamin Edwards Inc | 19,049 | $1.95M | 0.02% | +29+0.2% | Added |
| Zacks Investment Management | 19,272 | $1.98M | 0.02% | +1,587+9.0% | Added |
| Pensionfund Sabic | 19,300 | $1.98M | 0.56% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 19,478 | $2.00M | 0.45% | +19,478 | New |
| Merit Financial Group, LLC | 19,821 | $2.03M | 0.02% | +4,543+29.7% | Added |
| RFG Advisory, LLC | 19,848 | $2.04M | 0.05% | +1,665+9.2% | Added |
| Sterling Capital Management LLC | 19,871 | $2.04M | 0.03% | +12,369+164.9% | Added |
| Tower Research Capital LLC (TRC) | 19,882 | $2.04M | 0.05% | +9,184+85.8% | Added |
| Kentucky Trust Co | 20,065 | $2.06M | 1.18% | −530−2.6% | Reduced |
| Mizuho Securities USA LLC | 20,386 | $2.09M | 0.04% | +20,386 | New |
| Park Avenue Securities LLC | 20,454 | $2.10M | 0.02% | +7,049+52.6% | Added |
| Cascade Investment Group, Inc. | 20,913 | $2.15M | 1.50% | −167−0.8% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 21,031 | $2.16M | 0.05% | −26,949−56.2% | Reduced |
| Fifth Third Bancorp | 21,090 | $2.16M | 0.01% | +499+2.4% | Added |
| Heritage Trust Co | 21,175 | $2.17M | 0.25% | −328−1.5% | Reduced |