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, Q4 2024
Institutional positions in Iron Mountain Inc as of Dec 31, 2024. 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
- 1,067
- +30 vs. Q3 2024
- Shares held
- 237.3M
- −4.59M (−1.9%) vs. Q3 2024
- Total value
- $24.9B
- −$3.75B (−13.1%) vs. Q3 2024
- New holders
- 139
- 364 more added
- Sold out
- 109
- 409 more reduced
19 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2024
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Nissay Asset Management Corp | 77,708 | $8.14M | 0.05% | +1,636+2.2% | Added |
| Candriam Luxembourg S.C.A. | 77,097 | $8.10M | 0.05% | +52,061+207.9% | Added |
| Corebridge Financial, Inc. | 76,267 | $8.02M | 0.04% | +524+0.7% | Added |
| MinichMacGregor Wealth Management, LLC | 73,663 | $7.74M | 1.61% | −2,104−2.8% | Reduced |
| Assetmark, Inc | 73,214 | $7.70M | 0.02% | +24,679+50.8% | Added |
| Wealthfront Advisers LLC | 72,396 | $7.61M | 0.02% | +3,356+4.9% | Added |
| Avantax Advisory Services, Inc. | 71,623 | $7.53M | 0.05% | −3,691−4.9% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 69,845 | $7.34M | 0.33% | −5,219−7.0% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 69,435 | $7.30M | 0.01% | −6,016−8.0% | Reduced |
| Nia Impact Advisors, LLC | 69,233 | $7.28M | 2.37% | −492−0.7% | Reduced |
| American Trust Investment Advisors, LLC | 67,824 | $7.13M | 2.92% | +1,794+2.7% | Added |
| Allworth Financial LP | 64,350 | $7.08M | 0.04% | +1,209+1.9% | Added |
| Advisors Asset Management, Inc. | 65,760 | $6.91M | 0.13% | +2,384+3.8% | Added |
| Baird Financial Group, Inc. | 65,506 | $6.89M | 0.01% | +826+1.3% | Added |
| Moors & Cabot, Inc. | 65,035 | $6.84M | 0.32% | −1,726−2.6% | Reduced |
| First National Trust Co | 64,779 | $6.81M | 0.26% | −3,858−5.6% | Reduced |
| Woodstock Corp | 64,646 | $6.79M | 0.65% | −2,900−4.3% | Reduced |
| Prudential PLC | 63,691 | $6.69M | 0.03% | −14,335−18.4% | Reduced |
| Czech National Bank | 63,628 | $6.69M | 0.06% | +3,873+6.5% | Added |
| Quantitative Investment Management, LLC | 63,416 | $6.67M | 0.50% | +63,416 | New |
| Forsta Ap-Fonden | 62,900 | $6.61M | 0.05% | −2,300−3.5% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 62,500 | $6.57M | 0.01% | 00.0% | Unchanged |
| Ethic Inc. | 60,582 | $6.37M | 0.13% | +12,846+26.9% | Added |
| USS Investment Management Ltd | 59,702 | $6.28M | 0.05% | −22,550−27.4% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 59,846 | $6.21M | 0.03% | −82−0.1% | Reduced |
| Peapack Gladstone Financial Corp | 58,536 | $6.15M | 0.09% | −2,347−3.9% | Reduced |
| Amalgamated Bank | 58,514 | $6.15M | 0.05% | −1,341−2.2% | Reduced |
| Oliver Luxxe Assets LLC | 51,469 | $6.12M | 1.11% | 00.0% | Unchanged |
| Crossmark Global Holdings, Inc. | 57,606 | $6.05M | 0.11% | −661−1.1% | Reduced |
| The PNC Financial Services Group, Inc. | 57,194 | $6.01M | 0.00% | +3,317+6.2% | Added |
| British Columbia Investment Management Corp | 56,173 | $5.90M | 0.04% | +7,260+14.8% | Added |
| Mizuho Markets Americas LLC | 55,775 | $5.86M | 0.11% | +55,775 | New |
| New Age Alpha Advisors, LLC | 55,728 | $5.86M | 0.24% | +55,728 | New |
| Van Eck Associates Corp | 55,571 | $5.84M | 0.01% | +5,150+10.2% | Added |
| ProShare Advisors LLC | 53,429 | $5.62M | 0.01% | +3,630+7.3% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 53,084 | $5.58M | 0.06% | +14,600+37.9% | Added |
| Northwestern Mutual Wealth Management Co | 53,081 | $5.58M | 0.00% | +53+0.1% | Added |
| DnB Asset Management AS | 52,585 | $5.53M | 0.02% | +2,919+5.9% | Added |
| Promethos Capital, LLC | 52,122 | $5.48M | 1.93% | +1,780+3.5% | Added |
| Wealth Enhancement Advisory Services, LLC | 51,874 | $5.45M | 0.01% | +9,937+23.7% | Added |
| Werlinich Asset Management, LLC | 51,687 | $5.36M | 3.12% | −60−0.1% | Reduced |
| One Capital Management, LLC | 50,394 | $5.30M | 0.18% | −9,085−15.3% | Reduced |
| Mariner, LLC | 49,834 | $5.24M | 0.01% | +3,154+6.8% | Added |
| Yousif Capital Management, LLC | 49,352 | $5.19M | 0.06% | +2,497+5.3% | Added |
| Allianz Asset Management GmbH | 49,053 | $5.16M | 0.01% | −1,845−3.6% | Reduced |
| FORA Capital, LLC | 48,826 | $5.13M | 0.59% | +48,826 | New |
| Utah Retirement Systems | 48,214 | $5.07M | 0.06% | +100+0.2% | Added |
| Bank of Nova Scotia | 47,633 | $5.01M | 0.01% | +10,105+26.9% | Added |
| RB Capital Management, LLC | 46,340 | $4.87M | 1.14% | +156+0.3% | Added |
| WealthTrust Axiom LLC | 46,279 | $4.86M | 1.45% | −2,142−4.4% | Reduced |
| Quantbot Technologies LP | 45,922 | $4.83M | 0.18% | +40,935+820.8% | Added |
| Mirae Asset Global Investments Co., Ltd. | 46,134 | $4.82M | 0.02% | +3,360+7.9% | Added |
| CIBC Asset Management Inc | 44,952 | $4.72M | 0.02% | +1,937+4.5% | Added |
| Truist Financial Corp | 44,751 | $4.70M | 0.01% | −21,874−32.8% | Reduced |
| Trinity Legacy Partners, LLC | 44,469 | $4.67M | 1.20% | +2,039+4.8% | Added |
| Federated Hermes, Inc. | 44,058 | $4.63M | 0.01% | −10,026−18.5% | Reduced |
| Verition Fund Management LLC | 43,941 | $4.62M | 0.02% | +43,941 | New |
| Catalyst Capital Advisors LLC | 43,825 | $4.61M | 0.10% | −1,325−2.9% | Reduced |
| New York Life Investment Management LLC | 43,791 | $4.60M | 0.04% | +195+0.4% | Added |
| Nomura Holdings Inc | 43,734 | $4.60M | 0.02% | +20,551+88.6% | Added |
| Achmea Investment Management B.V. | 42,770 | $4.50M | 0.07% | +5,747+15.5% | Added |
| Pensionfund DSM Netherlands | 42,500 | $4.47M | 2.78% | −15,000−26.1% | Reduced |
| Venture Visionary Partners LLC | 42,457 | $4.46M | 0.19% | +23,673+126.0% | Added |
| Police & Firemen's Retirement System of New Jersey | 42,359 | $4.45M | 0.04% | +42,359 | New |
| Holderness Investments Co | 42,097 | $4.42M | 0.98% | −911−2.1% | Reduced |
| Atria Wealth Solutions, Inc. | 41,472 | $4.38M | 0.05% | −7,309−15.0% | Reduced |
| Spirit of America Management Corp | 41,350 | $4.35M | 0.88% | +2,850+7.4% | Added |
| Shelton Capital Management | 40,663 | $4.27M | 0.11% | +292+0.7% | Added |
| Chapin Davis, Inc. | 34,819 | $4.14M | 1.35% | 00.0% | Unchanged |
| Independent Advisor Alliance | 39,310 | $4.13M | 0.05% | −539−1.4% | Reduced |
| Rafferty Asset Management, LLC | 38,608 | $4.06M | 0.01% | −3,087−7.4% | Reduced |
| Vectors Research Management, LLC | 38,453 | $4.04M | 1.38% | −4,979−11.5% | Reduced |
| Swiss Life Asset Management Ltd | 38,021 | $3.99M | 0.03% | +16,347+75.4% | Added |
| Raiffeisen Bank International AG | 38,143 | $3.96M | 0.06% | +38,143 | New |
| Steward Partners Investment Advisory, LLC | 37,519 | $3.94M | 0.03% | +2,764+8.0% | Added |
| ING Groep NV | 37,481 | $3.94M | 0.03% | −1,750−4.5% | Reduced |
| Janus Henderson Group PLC | 37,357 | $3.93M | 0.00% | −27,887−42.7% | Reduced |
| Engineers Gate Manager LP | 36,987 | $3.89M | 0.07% | +36,987 | New |
| Shell Asset Management Co | 36,844 | $3.87M | 0.17% | −3,907−9.6% | Reduced |
| Jump Financial, LLC | 36,486 | $3.84M | 0.08% | +32,266+764.6% | Added |
| Teacher Retirement System of Texas | 36,049 | $3.79M | 0.01% | +34,086+1,736.4% | Added |
| Mutual of America Capital Management LLC | 35,154 | $3.70M | 0.04% | −966−2.7% | Reduced |
| Cyndeo Wealth Partners, LLC | 35,086 | $3.69M | 0.25% | −10.0% | Reduced |
| Squarepoint Ops LLC | 35,048 | $3.68M | 0.01% | +1,087+3.2% | Added |
| Investor's Fiduciary Advisor Network, LLC | 34,675 | $3.64M | 1.40% | +34,675 | New |
| Pathstone Holdings, LLC | 34,433 | $3.63M | 0.02% | −272−0.8% | Reduced |
| Cerity Partners LLC | 32,836 | $3.62M | 0.01% | +3,474+11.8% | Added |
| Lee Danner & Bass Inc | 34,450 | $3.62M | 0.29% | +9,245+36.7% | Added |
| Federation des caisses Desjardins du Quebec | 34,410 | $3.62M | 0.02% | +6,993+25.5% | Added |
| Hourglass Capital, LLC | 33,430 | $3.51M | 0.97% | −850−2.5% | Reduced |
| Azimuth Capital Investment Management LLC | 33,370 | $3.51M | 0.14% | −27,420−45.1% | Reduced |
| Pacitti Group Inc. | 33,063 | $3.49M | 1.65% | −420−1.3% | Reduced |
| Smithfield Trust Co | 33,016 | $3.47M | 0.17% | +50.0% | Added |
| Congress Wealth Management LLC | 32,906 | $3.46M | 0.05% | −21,401−39.4% | Reduced |
| Horizon Kinetics Asset Management LLC | 32,900 | $3.46M | 0.04% | −1,550−4.5% | Reduced |
| Terra Nova Asset Management LLC | 32,890 | $3.46M | 2.63% | +206+0.6% | Added |
| TD Waterhouse Canada Inc. | 32,734 | $3.44M | 0.03% | +4,956+17.8% | Added |
| Bessemer Group Inc | 32,726 | $3.44M | 0.01% | −585−1.8% | Reduced |
| Centiva Capital, LP | 32,711 | $3.44M | 0.13% | +4,585+16.3% | Added |
| James Hambro & Partners | 32,485 | $3.42M | 0.13% | −72,123−68.9% | Reduced |