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 |
|---|---|---|---|---|---|
| State of Michigan Retirement System | 79,646 | $6.85M | 0.04% | 00.0% | Unchanged |
| Varma Mutual Pension Insurance Co | 80,238 | $6.90M | 0.06% | −8,300−9.4% | Reduced |
| Vestcor Inc | 80,588 | $6.93M | 0.23% | −5,211−6.1% | Reduced |
| Xponance, Inc. | 80,614 | $6.94M | 0.07% | −17,784−18.1% | Reduced |
| MML Investors Services, LLC | 80,762 | $6.95M | 0.02% | −1,589−1.9% | Reduced |
| Oversea-Chinese Banking CORP Ltd | 81,621 | $7.02M | 0.21% | +3,790+4.9% | Added |
| Mercer Global Advisors Inc | 82,593 | $7.11M | 0.02% | −4,362−5.0% | Reduced |
| Arizona State Retirement System | 84,865 | $7.30M | 0.05% | −334−0.4% | Reduced |
| M&T Bank Corp | 85,195 | $7.33M | 0.03% | −1,867−2.1% | Reduced |
| Virginia Retirement Systems Et Al | 85,400 | $7.35M | 0.05% | +85,400 | New |
| Renaissance Technologies LLC | 85,763 | $7.38M | 0.01% | +85,763 | New |
| Victory Capital Management Inc | 85,846 | $7.39M | 0.01% | −11,257−11.6% | Reduced |
| Capital Fund Management S.A. | 86,864 | $7.47M | 0.10% | +6,758+8.4% | Added |
| Cubist Systematic Strategies, LLC | 86,988 | $7.48M | 0.10% | +73,675+553.4% | Added |
| Kestra Advisory Services, LLC | 88,000 | $7.57M | 0.04% | +3,802+4.5% | Added |
| Foresight Capital Management Advisors, Inc. | 88,185 | $7.59M | 4.71% | +882+1.0% | Added |
| ASR Vermogensbeheer N.V. | 90,601 | $7.80M | 0.12% | +90,601 | New |
| Janney Montgomery Scott LLC | 90,930 | $7.82M | 0.02% | −1,433−1.6% | Reduced |
| MetLife Investment Management | 91,868 | $7.90M | 0.04% | −1,701−1.8% | Reduced |
| Adelante Capital Management LLC | 390,346 | $7.91M | 0.60% | −55,551−12.5% | Reduced |
| Public Employees Retirement System of Ohio | 92,009 | $7.92M | 0.03% | −10,154−9.9% | Reduced |
| Forsta Ap-Fonden | 92,800 | $7.98M | 0.06% | +29,900+47.5% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 94,965 | $8.17M | 0.08% | +2,395+2.6% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 96,475 | $8.30M | 0.05% | −728−0.7% | Reduced |
| New Age Alpha Advisors, LLC | 96,521 | $8.30M | 0.37% | +40,793+73.2% | Added |
| State of New Jersey Common Pension Fund D | 96,740 | $8.32M | 0.04% | −9,342−8.8% | Reduced |
| Chicago Capital, LLC | 99,214 | $8.54M | 0.24% | −3,863−3.7% | Reduced |
| Private Advisor Group, LLC | 99,362 | $8.55M | 0.05% | +4,282+4.5% | Added |
| KLP Kapitalforvaltning AS | 98,916 | $8.58M | 0.04% | +1,700+1.7% | Added |
| State of Tennessee, Treasury Department | 102,433 | $8.81M | 0.03% | +11,982+13.2% | Added |
| Creative Planning | 106,663 | $9.18M | 0.01% | +7,332+7.4% | Added |
| Knights of Columbus Asset Advisors LLC | 106,786 | $9.19M | 0.63% | −84,519−44.2% | Reduced |
| Eisler Capital Management Ltd. | 107,720 | $9.26M | 0.28% | +107,720 | New |
| Allspring Global Investments Holdings, LLC | 107,640 | $9.35M | 0.02% | −9,622−8.2% | Reduced |
| HighTower Advisors, LLC | 109,124 | $9.39M | 0.01% | +23,580+27.6% | Added |
| Canada Pension Plan Investment Board | 109,343 | $9.41M | 0.01% | −107,925−49.7% | Reduced |
| Nisa Investment Advisors, LLC | 109,603 | $9.52M | 0.05% | −3,215−2.8% | Reduced |
| Sheaff Brock Investment Advisors, LLC | 111,304 | $9.58M | 0.88% | −855−0.8% | Reduced |
| U.S. Capital Wealth Advisors, LLC | 112,100 | $9.65M | 0.30% | −902−0.8% | Reduced |
| UniSuper Management Pty Ltd | 113,493 | $9.76M | 0.07% | +4,028+3.7% | Added |
| IFM Investors Pty Ltd | 114,068 | $9.81M | 0.11% | −8,755−7.1% | Reduced |
| Tectonic Advisors LLC | 115,997 | $9.98M | 0.62% | +15,790+15.8% | Added |
| CIBC World Markets Corp | 117,477 | $10.1M | 0.08% | −14,237−10.8% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 119,804 | $10.3M | 0.01% | +50,369+72.5% | Added |
| Advisor Group Holdings, Inc. | 121,152 | $10.4M | 0.02% | +6,930+6.1% | Added |
| Sargent Investment Group, LLC | 121,947 | $10.5M | 1.68% | −3,691−2.9% | Reduced |
| Franklin Resources Inc | 122,839 | $10.6M | 0.00% | −2,077−1.7% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 124,963 | $10.8M | 0.03% | −6,559−5.0% | Reduced |
| Sanctuary Advisors, LLC | 126,414 | $10.9M | 0.08% | +5,159+4.3% | Added |
| Ar Asset Management Inc | 130,600 | $11.2M | 2.55% | 00.0% | Unchanged |
| Mutual Advisors, LLC | 130,443 | $11.4M | 0.33% | +9,598+7.9% | Added |
| CIBC World Markets Inc. | 133,111 | $11.5M | 0.03% | −31,171−19.0% | Reduced |
| Treasurer of the State of North Carolina | 133,244 | $11.5M | 0.05% | +1,754+1.3% | Added |
| Voya Investment Management LLC | 134,366 | $11.6M | 0.01% | −2,975−2.2% | Reduced |
| Thrivent Financial for Lutherans | 127,542 | $11.6M | 0.03% | +13,946+12.3% | Added |
| QRG Capital Management, Inc. | 135,458 | $11.7M | 0.12% | −12,546−8.5% | Reduced |
| Vert Asset Management LLC | 136,046 | $11.7M | 4.02% | +6,780+5.2% | Added |
| Cambridge Investment Research Advisors, Inc. | 142,256 | $12.2M | 0.04% | −1,855−1.3% | Reduced |
| Trust Co of Virginia | 142,269 | $12.2M | 1.13% | −3,462−2.4% | Reduced |
| Pinebridge Investments, L.P. | 142,338 | $12.2M | 0.10% | +23,083+19.4% | Added |
| Toronto Dominion Bank | 143,813 | $12.4M | 0.03% | −15,064−9.5% | Reduced |
| Danske Bank A/S | 144,672 | $12.4M | 0.04% | −18,278−11.2% | Reduced |
| APG Asset Management N.V. | 158,200 | $12.6M | 0.04% | −1,000−0.6% | Reduced |
| Royal London Asset Management Ltd | 149,037 | $12.8M | 0.03% | +12,211+8.9% | Added |
| Colony Group, LLC | 149,537 | $12.9M | 0.03% | +27,252+22.3% | Added |
| ExodusPoint Capital Management, LP | 150,704 | $13.0M | 0.17% | −35,795−19.2% | Reduced |
| First Trust Advisors LP | 151,710 | $13.1M | 0.01% | −67,548−30.8% | Reduced |
| Burney Co | 152,148 | $13.1M | 0.48% | −2,127−1.4% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 154,053 | $13.3M | 0.04% | +580.0% | Added |
| Brookstone Capital Management | 158,221 | $13.6M | 0.20% | +35,362+28.8% | Added |
| Dana Investment Advisors, Inc. | 159,047 | $13.7M | 0.49% | −5,257−3.2% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 161,894 | $13.9M | 0.08% | +4,777+3.0% | Added |
| Natixis Advisors, L.P. | 167,828 | $14.4M | 0.03% | −32,686−16.3% | Reduced |
| Cetera Investment Advisers | 168,743 | $14.5M | 0.03% | +15,708+10.3% | Added |
| Handelsbanken Fonder AB | 170,889 | $14.7M | 0.06% | −39,081−18.6% | Reduced |
| Employees Retirement System of Texas | 172,324 | $14.8M | 0.13% | +41,824+32.0% | Added |
| Two Sigma Investments, LP | 175,533 | $15.1M | 0.03% | +175,533 | New |
| Schonfeld Strategic Advisors LLC | 175,904 | $15.1M | 0.10% | −59,724−25.3% | Reduced |
| Alyeska Investment Group, L.P. | 176,584 | $15.2M | 0.06% | +176,584 | New |
| State of Alaska, Department of Revenue | 176,632 | $15.2M | 0.17% | +2,530+1.5% | Added |
| Resona Asset Management Co.,Ltd. | 178,454 | $15.2M | 0.09% | +12,949+7.8% | Added |
| United Capital Financial Advisers, LLC | 183,706 | $15.8M | 0.14% | +905+0.5% | Added |
| State of Wisconsin Investment Board | 187,787 | $16.2M | 0.04% | +9,159+5.1% | Added |
| United Bank | 188,175 | $16.2M | 2.06% | −25,913−12.1% | Reduced |
| STRS Ohio | 190,800 | $16.4M | 0.07% | +59,700+45.5% | Added |
| TD Asset Management Inc | 194,024 | $16.7M | 0.02% | −1,758,408−90.1% | Reduced |
| Lasalle Investment Management Securities LLC | 194,144 | $16.7M | 0.73% | +194,144 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 194,795 | $16.8M | 0.05% | +10,382+5.6% | Added |
| Manufacturers Life Insurance Company, The | 195,137 | $16.8M | 0.02% | +6,832+3.6% | Added |
| Credit Agricole S A | 200,767 | $17.3M | 0.07% | −28,301−12.4% | Reduced |
| Stifel Financial Corp | 205,172 | $17.7M | 0.02% | −64,662−24.0% | Reduced |
| Moran Wealth Management, LLC | 205,990 | $17.7M | 0.60% | −3,029−1.4% | Reduced |
| New York State Common Retirement Fund | 206,074 | $17.7M | 0.03% | +15,600+8.2% | Added |
| Commonwealth Equity Services, LLC | 209,352 | $18.0M | 0.03% | −15,711−7.0% | Reduced |
| Envestnet Asset Management Inc | 213,899 | $18.4M | 0.01% | −31,564−12.9% | Reduced |
| Man Group plc | 214,776 | $18.5M | 0.06% | −5,962−2.7% | Reduced |
| CI Private Wealth, LLC | 223,772 | $19.3M | 0.03% | +7,630+3.5% | Added |
| Ensign Peak Advisors, Inc | 227,016 | $19.5M | 0.04% | −5,184−2.2% | Reduced |
| New York State Teachers Retirement System | 227,739 | $19.6M | 0.05% | −24,892−9.9% | Reduced |
| Citigroup Inc | 230,629 | $19.8M | 0.02% | +59,761+35.0% | Added |