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 |
|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | 209,648 | $24.9M | 0.02% | +4,150+2.0% | Added |
| Cbre Clarion Securities LLC | 209,492 | $24.9M | 0.40% | +209,492 | New |
| Raymond James Financial Services Advisors, Inc. | 207,961 | $24.7M | 0.03% | +16,175+8.4% | Added |
| Handelsbanken Fonder AB | 207,545 | $24.7M | 0.10% | +21,806+11.7% | Added |
| Lord, Abbett & Co. LLC | 203,000 | $24.1M | 0.08% | +203,000 | New |
| Natixis Advisors, L.P. | 201,574 | $24.0M | 0.05% | −9,402−4.5% | Reduced |
| New York State Common Retirement Fund | 200,678 | $23.8M | 0.03% | −76,600−27.6% | Reduced |
| Pacer Advisors, Inc. | 198,107 | $23.5M | 0.05% | −43,554−18.0% | Reduced |
| Worldquant Millennium Advisors LLC | 193,747 | $23.0M | 0.17% | +189,380+4,336.6% | Added |
| State of Wisconsin Investment Board | 186,755 | $22.2M | 0.06% | +18,520+11.0% | Added |
| Credit Agricole S A | 186,272 | $22.1M | 0.12% | +62,099+50.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 184,786 | $22.0M | 0.07% | −149,795−44.8% | Reduced |
| Knights of Columbus Asset Advisors LLC | 181,354 | $21.6M | 1.43% | −59,781−24.8% | Reduced |
| United Capital Financial Advisers, LLC | 180,754 | $21.5M | 0.18% | −5,094−2.7% | Reduced |
| CIBC World Markets Inc. | 179,008 | $21.3M | 0.05% | +109,216+156.5% | Added |
| Adage Capital Partners GP, L.L.C. | 176,452 | $21.0M | 0.04% | −104,700−37.2% | Reduced |
| State of Alaska, Department of Revenue | 173,192 | $20.6M | 0.22% | +528+0.3% | Added |
| Churchill Management Corp | 173,022 | $20.6M | 0.24% | −4,233−2.4% | Reduced |
| Dana Investment Advisors, Inc. | 171,116 | $20.3M | 0.67% | −25,085−12.8% | Reduced |
| Cetera Investment Advisers | 171,080 | $20.3M | 0.04% | −2,115−1.2% | Reduced |
| Nippon Life Global Investors Americas, Inc. | 168,230 | $20.1M | 0.86% | +22,630+15.5% | Added |
| National Bank of Canada | 168,692 | $20.0M | 0.03% | +72,131+74.7% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 161,869 | $19.2M | 0.04% | +7,687+5.0% | Added |
| Resona Asset Management Co.,Ltd. | 163,299 | $19.2M | 0.11% | −6,672−3.9% | Reduced |
| AQR Capital Management LLC | 163,702 | $19.1M | 0.03% | +113,464+225.9% | Added |
| Storebrand Asset Management AS | 160,935 | $19.1M | 0.06% | +6,708+4.3% | Added |
| Bamco Inc | 159,114 | $18.9M | 0.05% | +159,114 | New |
| Pinebridge Investments, L.P. | 158,655 | $18.9M | 0.14% | −27,505−14.8% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 157,279 | $18.7M | 0.06% | −2,778−1.7% | Reduced |
| Burney Co | 153,869 | $18.3M | 0.65% | −600.0% | Reduced |
| Susquehanna International Group, LLP | 153,126 | $18.2M | 0.03% | +34,862+29.5% | Added |
| Trust Co of Virginia | 152,509 | $18.1M | 1.62% | −12,603−7.6% | Reduced |
| Voya Investment Management LLC | 150,333 | $17.9M | 0.02% | −16,371−9.8% | Reduced |
| QRG Capital Management, Inc. | 149,407 | $17.8M | 0.19% | −25,374−14.5% | Reduced |
| Railway Pension Investments Ltd | 147,900 | $17.6M | 0.21% | 00.0% | Unchanged |
| Toronto Dominion Bank | 146,076 | $17.4M | 0.03% | +2,010+1.4% | Added |
| Cambridge Investment Research Advisors, Inc. | 145,699 | $17.3M | 0.06% | −5,635−3.7% | Reduced |
| Gillson Capital LP | 143,400 | $17.0M | 1.55% | +106,200+285.5% | Added |
| Danske Bank A/S | 138,256 | $16.4M | 0.05% | −800−0.6% | Reduced |
| Mutual Advisors, LLC | 123,823 | $15.6M | 0.46% | +1,829+1.5% | Added |
| HighTower Advisors, LLC | 131,174 | $15.6M | 0.02% | +7,529+6.1% | Added |
| Treasurer of the State of North Carolina | 130,880 | $15.6M | 0.06% | +600+0.5% | Added |
| Ar Asset Management Inc | 130,600 | $15.5M | 3.45% | 00.0% | Unchanged |
| Royal London Asset Management Ltd | 129,845 | $15.4M | 0.04% | 00.0% | Unchanged |
| Sanctuary Advisors, LLC | 129,034 | $15.4M | 0.10% | +95,499+284.8% | Added |
| Millennium Management LLC | 129,242 | $15.4M | 0.01% | +51,205+65.6% | Added |
| Nisa Investment Advisors, LLC | 128,343 | $15.4M | 0.09% | −13,493−9.5% | Reduced |
| IFM Investors Pty Ltd | 128,021 | $15.2M | 0.15% | −150−0.1% | Reduced |
| Sargent Investment Group, LLC | 127,610 | $15.2M | 2.72% | +1,250+1.0% | Added |
| Franklin Resources Inc | 121,209 | $14.7M | 0.00% | −36,472−23.1% | Reduced |
| Allspring Global Investments Holdings, LLC | 120,891 | $14.4M | 0.02% | −7,315−5.7% | Reduced |
| Vert Asset Management LLC | 119,937 | $14.3M | 4.91% | +2,273+1.9% | Added |
| Sheaff Brock Investment Advisors, LLC | 117,863 | $14.0M | 1.23% | −21,172−15.2% | Reduced |
| CIBC World Markets Corp | 117,334 | $13.9M | 0.10% | +79,544+210.5% | Added |
| Advisor Group Holdings, Inc. | 115,475 | $13.7M | 0.03% | −2,966−2.5% | Reduced |
| Varma Mutual Pension Insurance Co | 110,638 | $13.7M | 0.11% | −6,600−5.6% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 114,791 | $13.6M | 0.09% | −1,131−1.0% | Reduced |
| Public Employees Retirement System of Ohio | 108,846 | $12.9M | 0.06% | −4,201−3.7% | Reduced |
| Korea Investment CORP | 107,991 | $12.8M | 0.03% | −453,779−80.8% | Reduced |
| State of New Jersey Common Pension Fund D | 106,082 | $12.6M | 0.05% | 00.0% | Unchanged |
| James Hambro & Partners | 104,608 | $12.4M | 0.52% | −15,496−12.9% | Reduced |
| UniSuper Management Pty Ltd | 104,072 | $12.4M | 0.09% | −3,227−3.0% | Reduced |
| Victory Capital Management Inc | 103,910 | $12.3M | 0.01% | −3,558−3.3% | Reduced |
| Chicago Capital, LLC | 103,053 | $12.2M | 0.34% | +17,961+21.1% | Added |
| Employees Retirement System of Texas | 101,500 | $12.1M | 0.10% | +101,500 | New |
| Tudor Investment Corp Et Al | 100,000 | $11.9M | 0.13% | +100,000 | New |
| Creative Planning | 98,905 | $11.8M | 0.01% | +2,083+2.2% | Added |
| Nepsis, Inc. | 96,582 | $11.5M | 2.72% | +26,331+37.5% | Added |
| Tectonic Advisors LLC | 95,904 | $11.4M | 0.75% | +2,242+2.4% | Added |
| Xponance, Inc. | 95,663 | $11.4M | 0.11% | −394−0.4% | Reduced |
| Foresight Capital Management Advisors, Inc. | 95,049 | $11.3M | 6.70% | +318+0.3% | Added |
| State of Tennessee, Treasury Department | 94,605 | $11.2M | 0.04% | −58,755−38.3% | Reduced |
| Guggenheim Capital LLC | 93,889 | $11.2M | 0.08% | −23,863−20.3% | Reduced |
| Private Advisor Group, LLC | 93,068 | $11.1M | 0.07% | −917−1.0% | Reduced |
| MetLife Investment Management | 92,704 | $11.0M | 0.06% | −2,103−2.2% | Reduced |
| Lido Advisors, LLC | 91,978 | $10.9M | 0.08% | −5,885−6.0% | Reduced |
| Brookstone Capital Management | 91,795 | $10.9M | 0.16% | −6,630−6.7% | Reduced |
| MML Investors Services, LLC | 90,555 | $10.8M | 0.04% | +171+0.2% | Added |
| Salem Investment Counselors Inc | 88,982 | $10.6M | 0.32% | +476+0.5% | Added |
| M&T Bank Corp | 88,215 | $10.5M | 0.03% | +334+0.4% | Added |
| Janney Montgomery Scott LLC | 88,013 | $10.5M | 0.03% | −21,297−19.5% | Reduced |
| Vestcor Inc | 86,225 | $10.2M | 0.32% | −7,443−7.9% | Reduced |
| Oddo BHF Asset Management SAS | 85,888 | $10.2M | 0.51% | +85,888 | New |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 84,654 | $10.1M | 0.11% | +3,980+4.9% | Added |
| Arizona State Retirement System | 83,983 | $9.98M | 0.06% | +3,471+4.3% | Added |
| Prana Capital Management, LP | 83,526 | $9.93M | 0.45% | +54,222+185.0% | Added |
| Eagle Asset Management Inc | 82,407 | $9.86M | 0.05% | −58,137−41.4% | Reduced |
| STRS Ohio | 82,800 | $9.84M | 0.04% | −69,109−45.5% | Reduced |
| USS Investment Management Ltd | 82,252 | $9.77M | 0.07% | −12,924−13.6% | Reduced |
| Sonora Investment Management Group, LLC | 82,007 | $9.74M | 0.72% | −2,852−3.4% | Reduced |
| Gotham Asset Management, LLC | 81,404 | $9.67M | 0.10% | +10,404+14.7% | Added |
| Erste Asset Management GmbH | 81,400 | $9.51M | 0.11% | −14,700−15.3% | Reduced |
| State of Michigan Retirement System | 79,846 | $9.49M | 0.05% | −400−0.5% | Reduced |
| Prudential PLC | 78,026 | $9.27M | 0.05% | −21,198−21.4% | Reduced |
| Nissay Asset Management Corp | 76,072 | $9.04M | 0.06% | +2,632+3.6% | Added |
| MinichMacGregor Wealth Management, LLC | 75,767 | $9.00M | 1.93% | −11,606−13.3% | Reduced |
| Corebridge Financial, Inc. | 75,743 | $9.00M | 0.05% | −2,421−3.1% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 75,451 | $8.97M | 0.01% | −44,825−37.3% | Reduced |
| Avantax Advisory Services, Inc. | 75,314 | $8.95M | 0.06% | −1,413−1.8% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 75,064 | $8.92M | 0.42% | −745−1.0% | Reduced |