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 |
|---|---|---|---|---|---|
| Louisiana State Employees Retirement System | 15,800 | $1.36M | 0.03% | 00.0% | Unchanged |
| HighPoint Advisor Group LLC | 15,676 | $1.38M | 0.08% | −2,064−11.6% | Reduced |
| Claro Advisors LLC | 16,549 | $1.42M | 0.19% | −49−0.3% | Reduced |
| Gulf International Bank (UK) Ltd | 16,554 | $1.42M | 0.05% | −6,275−27.5% | Reduced |
| Snowden Capital Advisors LLC | 16,701 | $1.45M | 0.05% | −1,362−7.5% | Reduced |
| Inspire Trust Co, N.A. | 17,000 | $1.46M | 0.35% | +3,000+21.4% | Added |
| King Luther Capital Management Corp | 17,041 | $1.47M | 0.01% | 00.0% | Unchanged |
| IHT Wealth Management, LLC | 17,089 | $1.47M | 0.05% | +6,668+64.0% | Added |
| DoubleLine ETF Adviser LP | 17,189 | $1.48M | 0.49% | −3,875−18.4% | Reduced |
| Bramshill Investments, LLC | 17,241 | $1.48M | 0.15% | +10,518+156.4% | Added |
| Everence Capital Management Inc | 17,280 | $1.49M | 0.10% | −3,210−15.7% | Reduced |
| Highline Wealth Partners LLC | 17,284 | $1.49M | 0.50% | −833−4.6% | Reduced |
| Zacks Investment Management | 17,685 | $1.52M | 0.01% | +537+3.1% | Added |
| Dai-Ichi Life Insurance Company, Ltd | 17,827 | $1.53M | 0.04% | 00.0% | Unchanged |
| Hartford Investment Management Co | 18,001 | $1.55M | 0.05% | −185−1.0% | Reduced |
| AG2R la Mondiale Gestion D'Actifs | 15,836 | $1.56M | 0.08% | +15,836 | New |
| Commerce Bank | 18,174 | $1.56M | 0.01% | −1,480−7.5% | Reduced |
| RFG Advisory, LLC | 18,183 | $1.56M | 0.04% | +4,005+28.2% | Added |
| Ieq Capital, LLC | 18,264 | $1.57M | 0.01% | +1,304+7.7% | Added |
| Trust Investment Advisors | 18,419 | $1.58M | 1.02% | +256+1.4% | Added |
| Tyler-Stone Wealth Management | 18,423 | $1.59M | 0.28% | −2,242−10.8% | Reduced |
| Madison Asset Management, LLC | 18,531 | $1.59M | 0.02% | −5,838−24.0% | Reduced |
| Toroso Investments, LLC | 18,605 | $1.60M | 0.01% | +3,674+24.6% | Added |
| Benjamin Edwards Inc | 19,020 | $1.64M | 0.02% | −3,319−14.9% | Reduced |
| Pensionfund Sabic | 19,300 | $1.66M | 0.50% | −3,000−13.5% | Reduced |
| Natixis | 19,581 | $1.68M | 0.01% | +19,581 | New |
| Kentucky Retirement Systems | 19,876 | $1.71M | 0.05% | −282−1.4% | Reduced |
| Safe Harbor Fiduciary, LLC | 20,026 | $1.72M | 1.78% | −111−0.6% | Reduced |
| Robeco Institutional Asset Management B.V. | 20,206 | $1.74M | 0.00% | +1,039+5.4% | Added |
| Illinois Municipal Retirement Fund | 20,469 | $1.76M | 0.03% | 00.0% | Unchanged |
| Fifth Third Bancorp | 20,591 | $1.77M | 0.01% | −219−1.1% | Reduced |
| Kentucky Trust Co | 20,595 | $1.77M | 1.05% | −895−4.2% | Reduced |
| Naviter Wealth, LLC | 20,769 | $1.78M | 0.22% | +753+3.8% | Added |
| Oak Thistle LLC | 20,886 | $1.80M | 0.36% | +13,665+189.2% | Added |
| Cascade Investment Group, Inc. | 21,080 | $1.81M | 1.39% | −480−2.2% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 21,193 | $1.82M | 0.02% | −3,505−14.2% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 21,247 | $1.83M | 0.79% | +21,247 | New |
| KCM Investment Advisors LLC | 21,310 | $1.83M | 0.07% | 00.0% | Unchanged |
| Heritage Trust Co | 21,503 | $1.85M | 0.22% | −652−2.9% | Reduced |
| Fiduciary Trust Co | 21,574 | $1.86M | 0.02% | −148−0.7% | Reduced |
| Quadrature Capital Ltd | 22,389 | $1.93M | 0.04% | +10,398+86.7% | Added |
| F/M Investments LLC | 22,406 | $1.93M | 0.08% | −1,031−4.4% | Reduced |
| Teachers Retirement System of the State of Kentucky | 22,601 | $1.94M | 0.02% | +941+4.3% | Added |
| Ancora Advisors, LLC | 22,740 | $1.96M | 0.04% | 00.0% | Unchanged |
| Tredje AP-fonden | 23,057 | $1.98M | 0.02% | 00.0% | Unchanged |
| Quantbot Technologies LP | 23,078 | $1.99M | 0.06% | −22,844−49.7% | Reduced |
| Aigen Investment Management, LP | 23,104 | $1.99M | 0.32% | +23,104 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 23,263 | $2.00M | 0.01% | +23,263 | New |
| Stock Yards Bank & Trust Co | 23,270 | $2.00M | 0.07% | −2,541−9.8% | Reduced |
| PFG Investments, LLC | 23,466 | $2.02M | 0.13% | −2,136−8.3% | Reduced |
| Mizuho Securities USA LLC | 23,520 | $2.02M | 0.04% | −4,293−15.4% | Reduced |
| Sippican Capital Advisors | 23,712 | $2.04M | 1.54% | −50−0.2% | Reduced |
| GeoWealth Management, LLC | 23,760 | $2.04M | 0.08% | −3,469−12.7% | Reduced |
| Banque Cantonale Vaudoise | 23,815 | $2.05M | 0.09% | +23,815 | New |
| Moody National Bank Trust Division | 23,950 | $2.06M | 0.21% | +22+0.1% | Added |
| Entropy Technologies, LP | 24,177 | $2.08M | 0.20% | +24,177 | New |
| Capital Investment Advisors, LLC | 24,202 | $2.08M | 0.04% | −1,593−6.2% | Reduced |
| Erste Asset Management GmbH | 24,500 | $2.09M | 0.03% | −62,100−71.7% | Reduced |
| US Bancorp | 24,291 | $2.09M | 0.00% | +1,539+6.8% | Added |
| Gables Capital Management Inc. | 24,742 | $2.13M | 1.05% | +100+0.4% | Added |
| Woodline Partners LP | 24,742 | $2.13M | 0.01% | +7,193+41.0% | Added |
| CoreFirst Bank & Trust | 25,074 | $2.16M | 1.39% | −100−0.4% | Reduced |
| JustInvest LLC | 25,144 | $2.16M | 0.03% | +1,288+5.4% | Added |
| Ellsworth Advisors, LLC | 25,194 | $2.17M | 0.57% | +216+0.9% | Added |
| TFG Advisers LLC | 25,238 | $2.17M | 0.79% | +484+2.0% | Added |
| Oregon Public Employees Retirement Fund | 25,269 | $2.17M | 0.04% | +110+0.4% | Added |
| Aurora Investment Counsel | 25,444 | $2.19M | 1.21% | +25,444 | New |
| NEOS Investment Management LLC | 26,091 | $2.24M | 0.04% | +10,064+62.8% | Added |
| AXA S.A. | 26,450 | $2.28M | 0.01% | +22,610+588.8% | Added |
| Rakuten Investment Management, Inc. | 26,840 | $2.28M | 0.01% | +26,840 | New |
| Wolverine Asset Management LLC | 27,282 | $2.35M | 0.05% | +8,385+44.4% | Added |
| GWM Advisors LLC | 27,396 | $2.36M | 0.01% | −2,582−8.6% | Reduced |
| Independent Advisor Alliance | 27,675 | $2.38M | 0.08% | −11,635−29.6% | Reduced |
| Susquehanna Fundamental Investments, LLC | 28,209 | $2.43M | 0.04% | +21,478+319.1% | Added |
| Mackenzie Financial Corp | 28,337 | $2.44M | 0.00% | +3,248+12.9% | Added |
| O'Shaughnessy Asset Management, LLC | 28,369 | $2.44M | 0.02% | +3,896+15.9% | Added |
| Norinchukin Bank, The | 28,668 | $2.47M | 0.05% | +2,577+9.9% | Added |
| Sage Capital Management, LLC | 28,928 | $2.49M | 1.35% | −264−0.9% | Reduced |
| ING Groep NV | 29,108 | $2.50M | 0.02% | −8,373−22.3% | Reduced |
| CHB Investment Group, LLC | 29,175 | $2.51M | 1.33% | +357+1.2% | Added |
| D.A. Davidson & Co. | 29,216 | $2.51M | 0.02% | −307−1.0% | Reduced |
| Shell Asset Management Co | 29,497 | $2.54M | 0.12% | −7,347−19.9% | Reduced |
| Congress Wealth Management LLC | 29,559 | $2.55M | 0.03% | −3,347−10.2% | Reduced |
| Atria Wealth Solutions, Inc. | 29,417 | $2.55M | 0.03% | −12,055−29.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 29,904 | $2.57M | 0.01% | +1,286+4.5% | Added |
| Elo Mutual Pension Insurance Co | 29,924 | $2.57M | 0.06% | −463−1.5% | Reduced |
| Public Employees Retirement Association of Colorado | 30,171 | $2.60M | 0.01% | 00.0% | Unchanged |
| OP Asset Management Ltd | 30,309 | $2.61M | 0.04% | +30,309 | New |
| Dumont & Blake Investment Advisors LLC | 30,364 | $2.61M | 0.73% | +60+0.2% | Added |
| James Hambro & Partners | 30,612 | $2.63M | 0.11% | −1,873−5.8% | Reduced |
| Investor's Fiduciary Advisor Network, LLC | 30,949 | $2.66M | 1.26% | −3,726−10.7% | Reduced |
| Warren Averett Asset Management, LLC | 31,158 | $2.68M | 0.03% | −34−0.1% | Reduced |
| Siemens Fonds Invest GmbH | 31,164 | $2.68M | 0.18% | −189−0.6% | Reduced |
| Algert Global LLC | 31,523 | $2.71M | 0.07% | +31,523 | New |
| Courier Capital LLC | 31,609 | $2.72M | 0.18% | +2,107+7.1% | Added |
| Prevail Innovative Wealth Advisors, LLC | 31,648 | $2.72M | 0.73% | +31,648 | New |
| Rafferty Asset Management, LLC | 32,029 | $2.76M | 0.01% | −6,579−17.0% | Reduced |
| Horizon Kinetics Asset Management LLC | 32,455 | $2.79M | 0.03% | −445−1.4% | Reduced |
| Smithfield Trust Co | 32,569 | $2.80M | 0.14% | −447−1.4% | Reduced |
| Venture Visionary Partners LLC | 32,618 | $2.81M | 0.12% | −9,839−23.2% | Reduced |