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 |
|---|---|---|---|---|---|
| Spirit of America Management Corp | 41,350 | $4.35M | 0.88% | +2,850+7.4% | Added |
| Atria Wealth Solutions, Inc. | 41,472 | $4.38M | 0.05% | −7,309−15.0% | Reduced |
| Holderness Investments Co | 42,097 | $4.42M | 0.98% | −911−2.1% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 42,359 | $4.45M | 0.04% | +42,359 | New |
| Venture Visionary Partners LLC | 42,457 | $4.46M | 0.19% | +23,673+126.0% | Added |
| Pensionfund DSM Netherlands | 42,500 | $4.47M | 2.78% | −15,000−26.1% | Reduced |
| Achmea Investment Management B.V. | 42,770 | $4.50M | 0.07% | +5,747+15.5% | Added |
| Nomura Holdings Inc | 43,734 | $4.60M | 0.02% | +20,551+88.6% | Added |
| New York Life Investment Management LLC | 43,791 | $4.60M | 0.04% | +195+0.4% | Added |
| Catalyst Capital Advisors LLC | 43,825 | $4.61M | 0.10% | −1,325−2.9% | Reduced |
| Verition Fund Management LLC | 43,941 | $4.62M | 0.02% | +43,941 | New |
| Federated Hermes, Inc. | 44,058 | $4.63M | 0.01% | −10,026−18.5% | Reduced |
| Trinity Legacy Partners, LLC | 44,469 | $4.67M | 1.20% | +2,039+4.8% | Added |
| Truist Financial Corp | 44,751 | $4.70M | 0.01% | −21,874−32.8% | Reduced |
| CIBC Asset Management Inc | 44,952 | $4.72M | 0.02% | +1,937+4.5% | Added |
| Mirae Asset Global Investments Co., Ltd. | 46,134 | $4.82M | 0.02% | +3,360+7.9% | Added |
| Quantbot Technologies LP | 45,922 | $4.83M | 0.18% | +40,935+820.8% | Added |
| WealthTrust Axiom LLC | 46,279 | $4.86M | 1.45% | −2,142−4.4% | Reduced |
| RB Capital Management, LLC | 46,340 | $4.87M | 1.14% | +156+0.3% | Added |
| Bank of Nova Scotia | 47,633 | $5.01M | 0.01% | +10,105+26.9% | Added |
| Utah Retirement Systems | 48,214 | $5.07M | 0.06% | +100+0.2% | Added |
| FORA Capital, LLC | 48,826 | $5.13M | 0.59% | +48,826 | New |
| Allianz Asset Management GmbH | 49,053 | $5.16M | 0.01% | −1,845−3.6% | Reduced |
| Yousif Capital Management, LLC | 49,352 | $5.19M | 0.06% | +2,497+5.3% | Added |
| Mariner, LLC | 49,834 | $5.24M | 0.01% | +3,154+6.8% | Added |
| One Capital Management, LLC | 50,394 | $5.30M | 0.18% | −9,085−15.3% | Reduced |
| Werlinich Asset Management, LLC | 51,687 | $5.36M | 3.12% | −60−0.1% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 51,874 | $5.45M | 0.01% | +9,937+23.7% | Added |
| Promethos Capital, LLC | 52,122 | $5.48M | 1.93% | +1,780+3.5% | Added |
| DnB Asset Management AS | 52,585 | $5.53M | 0.02% | +2,919+5.9% | Added |
| Northwestern Mutual Wealth Management Co | 53,081 | $5.58M | 0.00% | +53+0.1% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 53,084 | $5.58M | 0.06% | +14,600+37.9% | Added |
| ProShare Advisors LLC | 53,429 | $5.62M | 0.01% | +3,630+7.3% | Added |
| Van Eck Associates Corp | 55,571 | $5.84M | 0.01% | +5,150+10.2% | Added |
| New Age Alpha Advisors, LLC | 55,728 | $5.86M | 0.24% | +55,728 | New |
| Mizuho Markets Americas LLC | 55,775 | $5.86M | 0.11% | +55,775 | New |
| British Columbia Investment Management Corp | 56,173 | $5.90M | 0.04% | +7,260+14.8% | Added |
| The PNC Financial Services Group, Inc. | 57,194 | $6.01M | 0.00% | +3,317+6.2% | Added |
| Crossmark Global Holdings, Inc. | 57,606 | $6.05M | 0.11% | −661−1.1% | Reduced |
| Oliver Luxxe Assets LLC | 51,469 | $6.12M | 1.11% | 00.0% | Unchanged |
| Amalgamated Bank | 58,514 | $6.15M | 0.05% | −1,341−2.2% | Reduced |
| Peapack Gladstone Financial Corp | 58,536 | $6.15M | 0.09% | −2,347−3.9% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 59,846 | $6.21M | 0.03% | −82−0.1% | Reduced |
| USS Investment Management Ltd | 59,702 | $6.28M | 0.05% | −22,550−27.4% | Reduced |
| Ethic Inc. | 60,582 | $6.37M | 0.13% | +12,846+26.9% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 62,500 | $6.57M | 0.01% | 00.0% | Unchanged |
| Forsta Ap-Fonden | 62,900 | $6.61M | 0.05% | −2,300−3.5% | Reduced |
| Quantitative Investment Management, LLC | 63,416 | $6.67M | 0.50% | +63,416 | New |
| Czech National Bank | 63,628 | $6.69M | 0.06% | +3,873+6.5% | Added |
| Prudential PLC | 63,691 | $6.69M | 0.03% | −14,335−18.4% | Reduced |
| Woodstock Corp | 64,646 | $6.79M | 0.65% | −2,900−4.3% | Reduced |
| First National Trust Co | 64,779 | $6.81M | 0.26% | −3,858−5.6% | Reduced |
| Moors & Cabot, Inc. | 65,035 | $6.84M | 0.32% | −1,726−2.6% | Reduced |
| Baird Financial Group, Inc. | 65,506 | $6.89M | 0.01% | +826+1.3% | Added |
| Advisors Asset Management, Inc. | 65,760 | $6.91M | 0.13% | +2,384+3.8% | Added |
| Allworth Financial LP | 64,350 | $7.08M | 0.04% | +1,209+1.9% | Added |
| American Trust Investment Advisors, LLC | 67,824 | $7.13M | 2.92% | +1,794+2.7% | Added |
| Nia Impact Advisors, LLC | 69,233 | $7.28M | 2.37% | −492−0.7% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 69,435 | $7.30M | 0.01% | −6,016−8.0% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 69,845 | $7.34M | 0.33% | −5,219−7.0% | Reduced |
| Avantax Advisory Services, Inc. | 71,623 | $7.53M | 0.05% | −3,691−4.9% | Reduced |
| Wealthfront Advisers LLC | 72,396 | $7.61M | 0.02% | +3,356+4.9% | Added |
| Assetmark, Inc | 73,214 | $7.70M | 0.02% | +24,679+50.8% | Added |
| MinichMacGregor Wealth Management, LLC | 73,663 | $7.74M | 1.61% | −2,104−2.8% | Reduced |
| Corebridge Financial, Inc. | 76,267 | $8.02M | 0.04% | +524+0.7% | Added |
| Candriam Luxembourg S.C.A. | 77,097 | $8.10M | 0.05% | +52,061+207.9% | Added |
| Nissay Asset Management Corp | 77,708 | $8.14M | 0.05% | +1,636+2.2% | Added |
| Oversea-Chinese Banking CORP Ltd | 77,831 | $8.18M | 0.23% | +4,140+5.6% | Added |
| Sonora Investment Management Group, LLC | 78,168 | $8.22M | 0.63% | −3,839−4.7% | Reduced |
| Salem Investment Counselors Inc | 78,604 | $8.27M | 0.27% | −10,378−11.7% | Reduced |
| State of Michigan Retirement System | 79,646 | $8.37M | 0.04% | −200−0.3% | Reduced |
| Capital Fund Management S.A. | 80,106 | $8.42M | 0.08% | +80,106 | New |
| Parallax Volatility Advisers, L.P. | 80,698 | $8.48M | 0.19% | +36,045+80.7% | Added |
| Edgestream Partners, L.P. | 81,648 | $8.58M | 0.37% | +57,930+244.2% | Added |
| MML Investors Services, LLC | 82,351 | $8.66M | 0.03% | −8,204−9.1% | Reduced |
| Kestra Advisory Services, LLC | 84,198 | $8.85M | 0.05% | +81,618+3,163.5% | Added |
| Arizona State Retirement System | 85,199 | $8.96M | 0.05% | +1,216+1.4% | Added |
| HighTower Advisors, LLC | 85,544 | $8.99M | 0.01% | −45,630−34.8% | Reduced |
| Vestcor Inc | 85,799 | $9.02M | 0.30% | −426−0.5% | Reduced |
| Erste Asset Management GmbH | 86,600 | $9.07M | 0.11% | +5,200+6.4% | Added |
| Concentric Capital Strategies, LP | 86,377 | $9.08M | 0.57% | +45,417+110.9% | Added |
| Gotham Asset Management, LLC | 86,557 | $9.10M | 0.09% | +5,153+6.3% | Added |
| Mercer Global Advisors Inc | 86,955 | $9.14M | 0.02% | +23,609+37.3% | Added |
| M&T Bank Corp | 87,062 | $9.15M | 0.03% | −1,153−1.3% | Reduced |
| Foresight Capital Management Advisors, Inc. | 87,303 | $9.18M | 5.36% | −7,746−8.1% | Reduced |
| Varma Mutual Pension Insurance Co | 88,538 | $9.31M | 0.07% | −22,100−20.0% | Reduced |
| Bamco Inc | 90,138 | $9.47M | 0.02% | −68,976−43.4% | Reduced |
| State of Tennessee, Treasury Department | 90,451 | $9.51M | 0.03% | −4,154−4.4% | Reduced |
| Voloridge Investment Management, LLC | 91,573 | $9.63M | 0.03% | +48,308+111.7% | Added |
| Janney Montgomery Scott LLC | 92,363 | $9.71M | 0.03% | +4,350+4.9% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 92,570 | $9.73M | 0.10% | +7,916+9.4% | Added |
| MetLife Investment Management | 93,569 | $9.84M | 0.05% | +865+0.9% | Added |
| Private Advisor Group, LLC | 95,080 | $9.99M | 0.06% | +2,012+2.2% | Added |
| Victory Capital Management Inc | 97,103 | $10.2M | 0.01% | −6,807−6.6% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 97,203 | $10.2M | 0.06% | +97,203 | New |
| KLP Kapitalforvaltning AS | 97,216 | $10.3M | 0.05% | +97,216 | New |
| Xponance, Inc. | 98,398 | $10.3M | 0.09% | +2,735+2.9% | Added |
| Creative Planning | 99,331 | $10.4M | 0.01% | +426+0.4% | Added |
| Tectonic Advisors LLC | 100,207 | $10.5M | 0.69% | +4,303+4.5% | Added |
| Oddo BHF Asset Management SAS | 101,766 | $10.7M | 0.54% | +15,878+18.5% | Added |