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 |
|---|---|---|---|---|---|
| Canada Pension Plan Investment Board | 217,268 | $22.8M | 0.02% | −851,842−79.7% | Reduced |
| CI Private Wealth, LLC | 216,142 | $22.7M | 0.04% | −6,087−2.7% | Reduced |
| United Bank | 214,088 | $22.5M | 2.68% | −4,375−2.0% | Reduced |
| Pacer Advisors, Inc. | 211,544 | $22.2M | 0.05% | +13,437+6.8% | Added |
| Handelsbanken Fonder AB | 209,970 | $22.1M | 0.08% | +2,425+1.2% | Added |
| Moran Wealth Management, LLC | 209,019 | $22.0M | 0.70% | −6,128−2.8% | Reduced |
| AQR Capital Management LLC | 203,864 | $21.2M | 0.03% | +40,162+24.5% | Added |
| Storebrand Asset Management AS | 200,692 | $21.1M | 0.06% | +39,757+24.7% | Added |
| Natixis Advisors, L.P. | 200,514 | $21.1M | 0.04% | −1,060−0.5% | Reduced |
| Korea Investment CORP | 198,842 | $20.9M | 0.05% | +90,851+84.1% | Added |
| Knights of Columbus Asset Advisors LLC | 191,305 | $20.1M | 1.33% | +9,951+5.5% | Added |
| New York State Common Retirement Fund | 190,474 | $20.0M | 0.03% | −10,204−5.1% | Reduced |
| Manufacturers Life Insurance Company, The | 188,305 | $19.8M | 0.02% | −21,343−10.2% | Reduced |
| ExodusPoint Capital Management, LP | 186,499 | $19.6M | 0.20% | +186,499 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 184,413 | $19.4M | 0.06% | −373−0.2% | Reduced |
| United Capital Financial Advisers, LLC | 182,801 | $19.2M | 0.16% | +2,047+1.1% | Added |
| State of Wisconsin Investment Board | 178,628 | $18.8M | 0.05% | −8,127−4.4% | Reduced |
| State of Alaska, Department of Revenue | 174,102 | $18.3M | 0.20% | +910+0.5% | Added |
| Churchill Management Corp | 173,539 | $18.2M | 0.20% | +517+0.3% | Added |
| Citigroup Inc | 170,868 | $18.0M | 0.02% | −97,521−36.3% | Reduced |
| Susquehanna International Group, LLP | 169,106 | $17.8M | 0.03% | +15,980+10.4% | Added |
| Resona Asset Management Co.,Ltd. | 165,505 | $17.3M | 0.10% | +2,206+1.4% | Added |
| Dana Investment Advisors, Inc. | 164,304 | $17.3M | 0.57% | −6,812−4.0% | Reduced |
| CIBC World Markets Inc. | 164,282 | $17.3M | 0.04% | −14,726−8.2% | Reduced |
| Danske Bank A/S | 162,950 | $17.1M | 0.05% | +24,694+17.9% | Added |
| Toronto Dominion Bank | 158,877 | $16.7M | 0.03% | +12,801+8.8% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 157,117 | $16.5M | 0.10% | +42,326+36.9% | Added |
| Burney Co | 154,275 | $16.2M | 0.57% | +406+0.3% | Added |
| Chevy Chase Trust Holdings, Inc. | 153,995 | $16.2M | 0.05% | −3,284−2.1% | Reduced |
| APG Asset Management N.V. | 159,200 | $16.2M | 0.05% | +159,200 | New |
| Cetera Investment Advisers | 153,035 | $16.1M | 0.03% | −18,045−10.5% | Reduced |
| Heitman Real Estate Securities LLC | 151,684 | $15.9M | 1.03% | −458,516−75.1% | Reduced |
| National Bank of Canada | 151,618 | $15.9M | 0.02% | −17,074−10.1% | Reduced |
| QRG Capital Management, Inc. | 148,004 | $15.6M | 0.16% | −1,403−0.9% | Reduced |
| Trust Co of Virginia | 145,731 | $15.3M | 1.41% | −6,778−4.4% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 144,111 | $15.1M | 0.05% | −1,588−1.1% | Reduced |
| Polar Asset Management Partners Inc. | 141,500 | $14.9M | 0.22% | +98,300+227.5% | Added |
| Voya Investment Management LLC | 137,341 | $14.4M | 0.01% | −12,992−8.6% | Reduced |
| Royal London Asset Management Ltd | 136,826 | $14.4M | 0.04% | +6,981+5.4% | Added |
| Qube Research & Technologies Ltd | 136,332 | $14.3M | 0.02% | +136,332 | New |
| CIBC World Markets Corp | 131,714 | $13.8M | 0.08% | +14,380+12.3% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 131,522 | $13.8M | 0.03% | −30,347−18.7% | Reduced |
| Treasurer of the State of North Carolina | 131,490 | $13.8M | 0.05% | +610+0.5% | Added |
| STRS Ohio | 131,100 | $13.8M | 0.05% | +48,300+58.3% | Added |
| Ar Asset Management Inc | 130,600 | $13.7M | 3.11% | 00.0% | Unchanged |
| Employees Retirement System of Texas | 130,500 | $13.7M | 0.12% | +29,000+28.6% | Added |
| Vert Asset Management LLC | 129,266 | $13.6M | 4.65% | +9,329+7.8% | Added |
| Mutual Advisors, LLC | 120,845 | $13.3M | 0.39% | −2,978−2.4% | Reduced |
| Franklin Resources Inc | 124,916 | $13.1M | 0.00% | +3,707+3.1% | Added |
| Brookstone Capital Management | 122,859 | $12.9M | 0.19% | +31,064+33.8% | Added |
| IFM Investors Pty Ltd | 122,823 | $12.9M | 0.13% | −5,198−4.1% | Reduced |
| Colony Group, LLC | 122,285 | $12.9M | 0.03% | +89,232+270.0% | Added |
| Sargent Investment Group, LLC | 125,638 | $12.8M | 2.10% | −1,972−1.5% | Reduced |
| Pinebridge Investments, L.P. | 119,255 | $12.5M | 0.10% | −39,400−24.8% | Reduced |
| Nippon Life Global Investors Americas, Inc. | 117,000 | $12.4M | 0.57% | −51,230−30.5% | Reduced |
| Sanctuary Advisors, LLC | 121,255 | $12.4M | 0.08% | −7,779−6.0% | Reduced |
| Allspring Global Investments Holdings, LLC | 117,262 | $12.3M | 0.02% | −3,629−3.0% | Reduced |
| Thrivent Financial for Lutherans | 113,596 | $12.2M | 0.02% | +44,911+65.4% | Added |
| Advisor Group Holdings, Inc. | 114,222 | $12.0M | 0.03% | −1,253−1.1% | Reduced |
| Adage Capital Partners GP, L.L.C. | 114,152 | $12.0M | 0.02% | −62,300−35.3% | Reduced |
| Nisa Investment Advisors, LLC | 112,818 | $11.9M | 0.05% | −15,525−12.1% | Reduced |
| U.S. Capital Wealth Advisors, LLC | 113,002 | $11.9M | 0.37% | +105,726+1,453.1% | Added |
| Sheaff Brock Investment Advisors, LLC | 112,159 | $11.8M | 1.03% | −5,704−4.8% | Reduced |
| UniSuper Management Pty Ltd | 109,465 | $11.5M | 0.08% | +5,393+5.2% | Added |
| State of New Jersey Common Pension Fund D | 106,082 | $11.2M | 0.05% | 00.0% | Unchanged |
| Chicago Capital, LLC | 103,077 | $10.8M | 0.29% | +240.0% | Added |
| Public Employees Retirement System of Ohio | 102,163 | $10.7M | 0.04% | −6,683−6.1% | Reduced |
| Oddo BHF Asset Management SAS | 101,766 | $10.7M | 0.54% | +15,878+18.5% | Added |
| Tectonic Advisors LLC | 100,207 | $10.5M | 0.69% | +4,303+4.5% | Added |
| Creative Planning | 99,331 | $10.4M | 0.01% | +426+0.4% | Added |
| Xponance, Inc. | 98,398 | $10.3M | 0.09% | +2,735+2.9% | Added |
| KLP Kapitalforvaltning AS | 97,216 | $10.3M | 0.05% | +97,216 | New |
| Lansforsakringar Fondforvaltning AB (publ) | 97,203 | $10.2M | 0.06% | +97,203 | New |
| Victory Capital Management Inc | 97,103 | $10.2M | 0.01% | −6,807−6.6% | Reduced |
| Private Advisor Group, LLC | 95,080 | $9.99M | 0.06% | +2,012+2.2% | Added |
| MetLife Investment Management | 93,569 | $9.84M | 0.05% | +865+0.9% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 92,570 | $9.73M | 0.10% | +7,916+9.4% | Added |
| Janney Montgomery Scott LLC | 92,363 | $9.71M | 0.03% | +4,350+4.9% | Added |
| Voloridge Investment Management, LLC | 91,573 | $9.63M | 0.03% | +48,308+111.7% | Added |
| State of Tennessee, Treasury Department | 90,451 | $9.51M | 0.03% | −4,154−4.4% | Reduced |
| Bamco Inc | 90,138 | $9.47M | 0.02% | −68,976−43.4% | Reduced |
| Varma Mutual Pension Insurance Co | 88,538 | $9.31M | 0.07% | −22,100−20.0% | Reduced |
| Foresight Capital Management Advisors, Inc. | 87,303 | $9.18M | 5.36% | −7,746−8.1% | Reduced |
| M&T Bank Corp | 87,062 | $9.15M | 0.03% | −1,153−1.3% | Reduced |
| Mercer Global Advisors Inc | 86,955 | $9.14M | 0.02% | +23,609+37.3% | Added |
| Gotham Asset Management, LLC | 86,557 | $9.10M | 0.09% | +5,153+6.3% | Added |
| Concentric Capital Strategies, LP | 86,377 | $9.08M | 0.57% | +45,417+110.9% | Added |
| Erste Asset Management GmbH | 86,600 | $9.07M | 0.11% | +5,200+6.4% | Added |
| Vestcor Inc | 85,799 | $9.02M | 0.30% | −426−0.5% | Reduced |
| HighTower Advisors, LLC | 85,544 | $8.99M | 0.01% | −45,630−34.8% | Reduced |
| Arizona State Retirement System | 85,199 | $8.96M | 0.05% | +1,216+1.4% | Added |
| Kestra Advisory Services, LLC | 84,198 | $8.85M | 0.05% | +81,618+3,163.5% | Added |
| MML Investors Services, LLC | 82,351 | $8.66M | 0.03% | −8,204−9.1% | Reduced |
| Edgestream Partners, L.P. | 81,648 | $8.58M | 0.37% | +57,930+244.2% | Added |
| Parallax Volatility Advisers, L.P. | 80,698 | $8.48M | 0.19% | +36,045+80.7% | Added |
| Capital Fund Management S.A. | 80,106 | $8.42M | 0.08% | +80,106 | New |
| State of Michigan Retirement System | 79,646 | $8.37M | 0.04% | −200−0.3% | Reduced |
| Salem Investment Counselors Inc | 78,604 | $8.27M | 0.27% | −10,378−11.7% | Reduced |
| Sonora Investment Management Group, LLC | 78,168 | $8.22M | 0.63% | −3,839−4.7% | Reduced |
| Oversea-Chinese Banking CORP Ltd | 77,831 | $8.18M | 0.23% | +4,140+5.6% | Added |