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, Q1 2025
Institutional positions in Iron Mountain Inc as of Mar 31, 2025. 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
- 995
- −56 vs. Q4 2024
- Shares held
- 245.2M
- +10.9M (+4.6%) vs. Q4 2024
- Total value
- $21.1B
- −$3.56B (−14.4%) vs. Q4 2024
- New holders
- 88
- 348 more added
- Sold out
- 144
- 401 more reduced
16 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2025
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Envestnet Asset Management Inc | 213,899 | $18.4M | 0.01% | −31,564−12.9% | Reduced |
| Commonwealth Equity Services, LLC | 209,352 | $18.0M | 0.03% | −15,711−7.0% | Reduced |
| New York State Common Retirement Fund | 206,074 | $17.7M | 0.03% | +15,600+8.2% | Added |
| Moran Wealth Management, LLC | 205,990 | $17.7M | 0.60% | −3,029−1.4% | Reduced |
| Stifel Financial Corp | 205,172 | $17.7M | 0.02% | −64,662−24.0% | Reduced |
| Credit Agricole S A | 200,767 | $17.3M | 0.07% | −28,301−12.4% | Reduced |
| Manufacturers Life Insurance Company, The | 195,137 | $16.8M | 0.02% | +6,832+3.6% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 194,795 | $16.8M | 0.05% | +10,382+5.6% | Added |
| Lasalle Investment Management Securities LLC | 194,144 | $16.7M | 0.73% | +194,144 | New |
| TD Asset Management Inc | 194,024 | $16.7M | 0.02% | −1,758,408−90.1% | Reduced |
| STRS Ohio | 190,800 | $16.4M | 0.07% | +59,700+45.5% | Added |
| United Bank | 188,175 | $16.2M | 2.06% | −25,913−12.1% | Reduced |
| State of Wisconsin Investment Board | 187,787 | $16.2M | 0.04% | +9,159+5.1% | Added |
| United Capital Financial Advisers, LLC | 183,706 | $15.8M | 0.14% | +905+0.5% | Added |
| Resona Asset Management Co.,Ltd. | 178,454 | $15.2M | 0.09% | +12,949+7.8% | Added |
| State of Alaska, Department of Revenue | 176,632 | $15.2M | 0.17% | +2,530+1.5% | Added |
| Alyeska Investment Group, L.P. | 176,584 | $15.2M | 0.06% | +176,584 | New |
| Schonfeld Strategic Advisors LLC | 175,904 | $15.1M | 0.10% | −59,724−25.3% | Reduced |
| Two Sigma Investments, LP | 175,533 | $15.1M | 0.03% | +175,533 | New |
| Employees Retirement System of Texas | 172,324 | $14.8M | 0.13% | +41,824+32.0% | Added |
| Handelsbanken Fonder AB | 170,889 | $14.7M | 0.06% | −39,081−18.6% | Reduced |
| Cetera Investment Advisers | 168,743 | $14.5M | 0.03% | +15,708+10.3% | Added |
| Natixis Advisors, L.P. | 167,828 | $14.4M | 0.03% | −32,686−16.3% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 161,894 | $13.9M | 0.08% | +4,777+3.0% | Added |
| Dana Investment Advisors, Inc. | 159,047 | $13.7M | 0.49% | −5,257−3.2% | Reduced |
| Brookstone Capital Management | 158,221 | $13.6M | 0.20% | +35,362+28.8% | Added |
| Chevy Chase Trust Holdings, Inc. | 154,053 | $13.3M | 0.04% | +580.0% | Added |
| Burney Co | 152,148 | $13.1M | 0.48% | −2,127−1.4% | Reduced |
| First Trust Advisors LP | 151,710 | $13.1M | 0.01% | −67,548−30.8% | Reduced |
| ExodusPoint Capital Management, LP | 150,704 | $13.0M | 0.17% | −35,795−19.2% | Reduced |
| Colony Group, LLC | 149,537 | $12.9M | 0.03% | +27,252+22.3% | Added |
| Royal London Asset Management Ltd | 149,037 | $12.8M | 0.03% | +12,211+8.9% | Added |
| APG Asset Management N.V. | 158,200 | $12.6M | 0.04% | −1,000−0.6% | Reduced |
| Danske Bank A/S | 144,672 | $12.4M | 0.04% | −18,278−11.2% | Reduced |
| Toronto Dominion Bank | 143,813 | $12.4M | 0.03% | −15,064−9.5% | Reduced |
| Pinebridge Investments, L.P. | 142,338 | $12.2M | 0.10% | +23,083+19.4% | Added |
| Trust Co of Virginia | 142,269 | $12.2M | 1.13% | −3,462−2.4% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 142,256 | $12.2M | 0.04% | −1,855−1.3% | Reduced |
| Vert Asset Management LLC | 136,046 | $11.7M | 4.02% | +6,780+5.2% | Added |
| QRG Capital Management, Inc. | 135,458 | $11.7M | 0.12% | −12,546−8.5% | Reduced |
| Thrivent Financial for Lutherans | 127,542 | $11.6M | 0.03% | +13,946+12.3% | Added |
| Voya Investment Management LLC | 134,366 | $11.6M | 0.01% | −2,975−2.2% | Reduced |
| Treasurer of the State of North Carolina | 133,244 | $11.5M | 0.05% | +1,754+1.3% | Added |
| CIBC World Markets Inc. | 133,111 | $11.5M | 0.03% | −31,171−19.0% | Reduced |
| Mutual Advisors, LLC | 130,443 | $11.4M | 0.33% | +9,598+7.9% | Added |
| Ar Asset Management Inc | 130,600 | $11.2M | 2.55% | 00.0% | Unchanged |
| Sanctuary Advisors, LLC | 126,414 | $10.9M | 0.08% | +5,159+4.3% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 124,963 | $10.8M | 0.03% | −6,559−5.0% | Reduced |
| Franklin Resources Inc | 122,839 | $10.6M | 0.00% | −2,077−1.7% | Reduced |
| Sargent Investment Group, LLC | 121,947 | $10.5M | 1.68% | −3,691−2.9% | Reduced |
| Advisor Group Holdings, Inc. | 121,152 | $10.4M | 0.02% | +6,930+6.1% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 119,804 | $10.3M | 0.01% | +50,369+72.5% | Added |
| CIBC World Markets Corp | 117,477 | $10.1M | 0.08% | −14,237−10.8% | Reduced |
| Tectonic Advisors LLC | 115,997 | $9.98M | 0.62% | +15,790+15.8% | Added |
| IFM Investors Pty Ltd | 114,068 | $9.81M | 0.11% | −8,755−7.1% | Reduced |
| UniSuper Management Pty Ltd | 113,493 | $9.76M | 0.07% | +4,028+3.7% | Added |
| U.S. Capital Wealth Advisors, LLC | 112,100 | $9.65M | 0.30% | −902−0.8% | Reduced |
| Sheaff Brock Investment Advisors, LLC | 111,304 | $9.58M | 0.88% | −855−0.8% | Reduced |
| Nisa Investment Advisors, LLC | 109,603 | $9.52M | 0.05% | −3,215−2.8% | Reduced |
| Canada Pension Plan Investment Board | 109,343 | $9.41M | 0.01% | −107,925−49.7% | Reduced |
| HighTower Advisors, LLC | 109,124 | $9.39M | 0.01% | +23,580+27.6% | Added |
| Allspring Global Investments Holdings, LLC | 107,640 | $9.35M | 0.02% | −9,622−8.2% | Reduced |
| Eisler Capital Management Ltd. | 107,720 | $9.26M | 0.28% | +107,720 | New |
| Knights of Columbus Asset Advisors LLC | 106,786 | $9.19M | 0.63% | −84,519−44.2% | Reduced |
| Creative Planning | 106,663 | $9.18M | 0.01% | +7,332+7.4% | Added |
| State of Tennessee, Treasury Department | 102,433 | $8.81M | 0.03% | +11,982+13.2% | Added |
| KLP Kapitalforvaltning AS | 98,916 | $8.58M | 0.04% | +1,700+1.7% | Added |
| Private Advisor Group, LLC | 99,362 | $8.55M | 0.05% | +4,282+4.5% | Added |
| Chicago Capital, LLC | 99,214 | $8.54M | 0.24% | −3,863−3.7% | Reduced |
| State of New Jersey Common Pension Fund D | 96,740 | $8.32M | 0.04% | −9,342−8.8% | Reduced |
| New Age Alpha Advisors, LLC | 96,521 | $8.30M | 0.37% | +40,793+73.2% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 96,475 | $8.30M | 0.05% | −728−0.7% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 94,965 | $8.17M | 0.08% | +2,395+2.6% | Added |
| Forsta Ap-Fonden | 92,800 | $7.98M | 0.06% | +29,900+47.5% | Added |
| Public Employees Retirement System of Ohio | 92,009 | $7.92M | 0.03% | −10,154−9.9% | Reduced |
| Adelante Capital Management LLC | 390,346 | $7.91M | 0.60% | −55,551−12.5% | Reduced |
| MetLife Investment Management | 91,868 | $7.90M | 0.04% | −1,701−1.8% | Reduced |
| Janney Montgomery Scott LLC | 90,930 | $7.82M | 0.02% | −1,433−1.6% | Reduced |
| ASR Vermogensbeheer N.V. | 90,601 | $7.80M | 0.12% | +90,601 | New |
| Foresight Capital Management Advisors, Inc. | 88,185 | $7.59M | 4.71% | +882+1.0% | Added |
| Kestra Advisory Services, LLC | 88,000 | $7.57M | 0.04% | +3,802+4.5% | Added |
| Cubist Systematic Strategies, LLC | 86,988 | $7.48M | 0.10% | +73,675+553.4% | Added |
| Capital Fund Management S.A. | 86,864 | $7.47M | 0.10% | +6,758+8.4% | Added |
| Victory Capital Management Inc | 85,846 | $7.39M | 0.01% | −11,257−11.6% | Reduced |
| Renaissance Technologies LLC | 85,763 | $7.38M | 0.01% | +85,763 | New |
| Virginia Retirement Systems Et Al | 85,400 | $7.35M | 0.05% | +85,400 | New |
| M&T Bank Corp | 85,195 | $7.33M | 0.03% | −1,867−2.1% | Reduced |
| Arizona State Retirement System | 84,865 | $7.30M | 0.05% | −334−0.4% | Reduced |
| Mercer Global Advisors Inc | 82,593 | $7.11M | 0.02% | −4,362−5.0% | Reduced |
| Oversea-Chinese Banking CORP Ltd | 81,621 | $7.02M | 0.21% | +3,790+4.9% | Added |
| MML Investors Services, LLC | 80,762 | $6.95M | 0.02% | −1,589−1.9% | Reduced |
| Xponance, Inc. | 80,614 | $6.94M | 0.07% | −17,784−18.1% | Reduced |
| Vestcor Inc | 80,588 | $6.93M | 0.23% | −5,211−6.1% | Reduced |
| Varma Mutual Pension Insurance Co | 80,238 | $6.90M | 0.06% | −8,300−9.4% | Reduced |
| State of Michigan Retirement System | 79,646 | $6.85M | 0.04% | 00.0% | Unchanged |
| Nissay Asset Management Corp | 78,949 | $6.79M | 0.04% | +1,241+1.6% | Added |
| Public Sector Pension Investment Board | 78,542 | $6.76M | 0.03% | −146,639−65.1% | Reduced |
| Edgestream Partners, L.P. | 77,599 | $6.68M | 0.23% | −4,049−5.0% | Reduced |
| Salem Investment Counselors Inc | 77,265 | $6.65M | 0.23% | −1,339−1.7% | Reduced |
| Banco Santander, S.A. | 77,016 | $6.63M | 0.07% | +77,016 | New |