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, Q3 2024
Institutional positions in Iron Mountain Inc as of Sep 30, 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
- 1,056
- +100 vs. Q2 2024
- Shares held
- 242.6M
- +22.7M (+10.3%) vs. Q2 2024
- Total value
- $28.8B
- +$9.07B (+46.0%) vs. Q2 2024
- New holders
- 165
- 323 more added
- Sold out
- 65
- 416 more reduced
11 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2024
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Parallax Volatility Advisers, L.P. | 44,653 | $5.31M | 0.14% | +44,653 | New |
| Uniplan Investment Counsel, Inc. | 44,702 | $5.31M | 0.46% | −2,683−5.7% | Reduced |
| Catalyst Capital Advisors LLC | 45,150 | $5.37M | 0.12% | −1,150−2.5% | Reduced |
| Tredje AP-fonden | 46,113 | $5.48M | 0.05% | 00.0% | Unchanged |
| RB Capital Management, LLC | 46,184 | $5.49M | 1.29% | −479−1.0% | Reduced |
| Robeco Institutional Asset Management B.V. | 46,489 | $5.52M | 0.01% | −28,926−38.4% | Reduced |
| Wakefield Asset Management LLLP | 46,625 | $5.54M | 1.80% | +69+0.1% | Added |
| Mariner, LLC | 46,680 | $5.54M | 0.01% | +5,702+13.9% | Added |
| Yousif Capital Management, LLC | 46,855 | $5.57M | 0.06% | −719−1.5% | Reduced |
| Jane Street Group, LLC | 47,384 | $5.63M | 0.01% | −400,751−89.4% | Reduced |
| Utah Retirement Systems | 48,114 | $5.72M | 0.06% | +200+0.4% | Added |
| WealthTrust Axiom LLC | 48,421 | $5.75M | 1.70% | −15,118−23.8% | Reduced |
| Assetmark, Inc | 48,535 | $5.77M | 0.02% | +5,502+12.8% | Added |
| British Columbia Investment Management Corp | 48,913 | $5.81M | 0.03% | −7,218−12.9% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 48,997 | $5.82M | 0.40% | −42,300−46.3% | Reduced |
| Atria Wealth Solutions, Inc. | 48,781 | $5.83M | 0.06% | −4,852−9.0% | Reduced |
| DnB Asset Management AS | 49,666 | $5.90M | 0.03% | +743+1.5% | Added |
| ProShare Advisors LLC | 49,799 | $5.92M | 0.01% | −1,952−3.8% | Reduced |
| Promethos Capital, LLC | 50,342 | $5.98M | 2.13% | 00.0% | Unchanged |
| Allianz Asset Management GmbH | 50,898 | $6.05M | 0.01% | −127,442−71.5% | Reduced |
| Public Sector Pension Investment Board | 51,128 | $6.08M | 0.03% | +10,410+25.6% | Added |
| Oliver Luxxe Assets LLC | 51,469 | $6.12M | 1.09% | −14,830−22.4% | Reduced |
| Werlinich Asset Management, LLC | 51,747 | $6.15M | 3.57% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 53,028 | $6.30M | 0.01% | +934+1.8% | Added |
| Van Eck Associates Corp | 50,421 | $6.33M | 0.01% | +5,534+12.3% | Added |
| The PNC Financial Services Group, Inc. | 53,877 | $6.40M | 0.00% | +1,446+2.8% | Added |
| Federated Hermes, Inc. | 54,084 | $6.43M | 0.01% | +3,537+7.0% | Added |
| Congress Wealth Management LLC | 54,307 | $6.45M | 0.09% | +11,307+26.3% | Added |
| Weiss Asset Management LP | 56,039 | $6.66M | 0.17% | +56,039 | New |
| Man Group plc | 56,940 | $6.77M | 0.02% | +56,940 | New |
| Pensionfund DSM Netherlands | 57,500 | $6.83M | 3.13% | 00.0% | Unchanged |
| Crossmark Global Holdings, Inc. | 58,267 | $6.92M | 0.12% | −8,093−12.2% | Reduced |
| One Capital Management, LLC | 59,479 | $7.07M | 0.23% | −2,752−4.4% | Reduced |
| Czech National Bank | 59,755 | $7.10M | 0.07% | +3,896+7.0% | Added |
| Amalgamated Bank | 59,855 | $7.11M | 0.06% | −1,582−2.6% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 59,928 | $7.12M | 0.03% | +33+0.1% | Added |
| Azimuth Capital Investment Management LLC | 60,790 | $7.22M | 0.28% | −18,220−23.1% | Reduced |
| Peapack Gladstone Financial Corp | 60,883 | $7.24M | 0.10% | −752−1.2% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 62,500 | $7.43M | 0.02% | 00.0% | Unchanged |
| Mercer Global Advisors Inc | 63,346 | $7.49M | 0.02% | −25,286−28.5% | Reduced |
| Allworth Financial LP | 63,141 | $7.50M | 0.05% | −68−0.1% | Reduced |
| Advisors Asset Management, Inc. | 63,376 | $7.53M | 0.14% | +10,984+21.0% | Added |
| Baird Financial Group, Inc. | 64,680 | $7.69M | 0.01% | +2,229+3.6% | Added |
| Forsta Ap-Fonden | 65,200 | $7.75M | 0.06% | +11,200+20.7% | Added |
| Snowden Capital Advisors LLC | 64,843 | $7.75M | 0.23% | −55,056−45.9% | Reduced |
| Janus Henderson Group PLC | 65,244 | $7.75M | 0.00% | −4,460−6.4% | Reduced |
| Citadel Advisors LLC | 65,870 | $7.83M | 0.01% | +65,870 | New |
| American Trust Investment Advisors, LLC | 66,030 | $7.85M | 3.21% | −4,366−6.2% | Reduced |
| Truist Financial Corp | 66,625 | $7.92M | 0.01% | +5,807+9.5% | Added |
| Moors & Cabot, Inc. | 66,761 | $7.93M | 0.39% | −2,307−3.3% | Reduced |
| Woodstock Corp | 67,546 | $8.03M | 0.77% | −4,235−5.9% | Reduced |
| First National Trust Co | 68,637 | $8.16M | 0.32% | −6,142−8.2% | Reduced |
| Thrivent Financial for Lutherans | 68,685 | $8.16M | 0.02% | −43,857−39.0% | Reduced |
| Wealthfront Advisers LLC | 69,040 | $8.20M | 0.03% | +672+1.0% | Added |
| Nia Impact Advisors, LLC | 69,725 | $8.29M | 2.75% | −2,372−3.3% | Reduced |
| Oversea-Chinese Banking CORP Ltd | 73,691 | $8.76M | 0.25% | +29,321+66.1% | Added |
| Hennion & Walsh Asset Management, Inc. | 75,064 | $8.92M | 0.42% | −745−1.0% | Reduced |
| Avantax Advisory Services, Inc. | 75,314 | $8.95M | 0.06% | −1,413−1.8% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 75,451 | $8.97M | 0.01% | −44,825−37.3% | Reduced |
| Corebridge Financial, Inc. | 75,743 | $9.00M | 0.05% | −2,421−3.1% | Reduced |
| MinichMacGregor Wealth Management, LLC | 75,767 | $9.00M | 1.93% | −11,606−13.3% | Reduced |
| Nissay Asset Management Corp | 76,072 | $9.04M | 0.06% | +2,632+3.6% | Added |
| Prudential PLC | 78,026 | $9.27M | 0.05% | −21,198−21.4% | Reduced |
| State of Michigan Retirement System | 79,846 | $9.49M | 0.05% | −400−0.5% | Reduced |
| Erste Asset Management GmbH | 81,400 | $9.51M | 0.11% | −14,700−15.3% | Reduced |
| Gotham Asset Management, LLC | 81,404 | $9.67M | 0.10% | +10,404+14.7% | Added |
| Sonora Investment Management Group, LLC | 82,007 | $9.74M | 0.72% | −2,852−3.4% | Reduced |
| USS Investment Management Ltd | 82,252 | $9.77M | 0.07% | −12,924−13.6% | Reduced |
| STRS Ohio | 82,800 | $9.84M | 0.04% | −69,109−45.5% | Reduced |
| Eagle Asset Management Inc | 82,407 | $9.86M | 0.05% | −58,137−41.4% | Reduced |
| Prana Capital Management, LP | 83,526 | $9.93M | 0.45% | +54,222+185.0% | Added |
| Arizona State Retirement System | 83,983 | $9.98M | 0.06% | +3,471+4.3% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 84,654 | $10.1M | 0.11% | +3,980+4.9% | Added |
| Oddo BHF Asset Management SAS | 85,888 | $10.2M | 0.51% | +85,888 | New |
| Vestcor Inc | 86,225 | $10.2M | 0.32% | −7,443−7.9% | Reduced |
| Janney Montgomery Scott LLC | 88,013 | $10.5M | 0.03% | −21,297−19.5% | Reduced |
| M&T Bank Corp | 88,215 | $10.5M | 0.03% | +334+0.4% | Added |
| Salem Investment Counselors Inc | 88,982 | $10.6M | 0.32% | +476+0.5% | Added |
| MML Investors Services, LLC | 90,555 | $10.8M | 0.04% | +171+0.2% | Added |
| Brookstone Capital Management | 91,795 | $10.9M | 0.16% | −6,630−6.7% | Reduced |
| Lido Advisors, LLC | 91,978 | $10.9M | 0.08% | −5,885−6.0% | Reduced |
| MetLife Investment Management | 92,704 | $11.0M | 0.06% | −2,103−2.2% | Reduced |
| Private Advisor Group, LLC | 93,068 | $11.1M | 0.07% | −917−1.0% | Reduced |
| Guggenheim Capital LLC | 93,889 | $11.2M | 0.08% | −23,863−20.3% | Reduced |
| State of Tennessee, Treasury Department | 94,605 | $11.2M | 0.04% | −58,755−38.3% | Reduced |
| Foresight Capital Management Advisors, Inc. | 95,049 | $11.3M | 6.70% | +318+0.3% | Added |
| Xponance, Inc. | 95,663 | $11.4M | 0.11% | −394−0.4% | Reduced |
| Tectonic Advisors LLC | 95,904 | $11.4M | 0.75% | +2,242+2.4% | Added |
| Nepsis, Inc. | 96,582 | $11.5M | 2.72% | +26,331+37.5% | Added |
| Creative Planning | 98,905 | $11.8M | 0.01% | +2,083+2.2% | Added |
| Tudor Investment Corp Et Al | 100,000 | $11.9M | 0.13% | +100,000 | New |
| Employees Retirement System of Texas | 101,500 | $12.1M | 0.10% | +101,500 | New |
| Chicago Capital, LLC | 103,053 | $12.2M | 0.34% | +17,961+21.1% | Added |
| Victory Capital Management Inc | 103,910 | $12.3M | 0.01% | −3,558−3.3% | Reduced |
| UniSuper Management Pty Ltd | 104,072 | $12.4M | 0.09% | −3,227−3.0% | Reduced |
| James Hambro & Partners | 104,608 | $12.4M | 0.52% | −15,496−12.9% | Reduced |
| State of New Jersey Common Pension Fund D | 106,082 | $12.6M | 0.05% | 00.0% | Unchanged |
| Korea Investment CORP | 107,991 | $12.8M | 0.03% | −453,779−80.8% | Reduced |
| Public Employees Retirement System of Ohio | 108,846 | $12.9M | 0.06% | −4,201−3.7% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 114,791 | $13.6M | 0.09% | −1,131−1.0% | Reduced |