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 |
|---|---|---|---|---|---|
| Public Employees Retirement System of Ohio | 102,163 | $10.7M | 0.04% | −6,683−6.1% | Reduced |
| Chicago Capital, LLC | 103,077 | $10.8M | 0.29% | +240.0% | Added |
| State of New Jersey Common Pension Fund D | 106,082 | $11.2M | 0.05% | 00.0% | Unchanged |
| UniSuper Management Pty Ltd | 109,465 | $11.5M | 0.08% | +5,393+5.2% | Added |
| Sheaff Brock Investment Advisors, LLC | 112,159 | $11.8M | 1.03% | −5,704−4.8% | Reduced |
| U.S. Capital Wealth Advisors, LLC | 113,002 | $11.9M | 0.37% | +105,726+1,453.1% | Added |
| Nisa Investment Advisors, LLC | 112,818 | $11.9M | 0.05% | −15,525−12.1% | Reduced |
| Adage Capital Partners GP, L.L.C. | 114,152 | $12.0M | 0.02% | −62,300−35.3% | Reduced |
| Advisor Group Holdings, Inc. | 114,222 | $12.0M | 0.03% | −1,253−1.1% | Reduced |
| Thrivent Financial for Lutherans | 113,596 | $12.2M | 0.02% | +44,911+65.4% | Added |
| Allspring Global Investments Holdings, LLC | 117,262 | $12.3M | 0.02% | −3,629−3.0% | Reduced |
| Sanctuary Advisors, LLC | 121,255 | $12.4M | 0.08% | −7,779−6.0% | Reduced |
| Nippon Life Global Investors Americas, Inc. | 117,000 | $12.4M | 0.57% | −51,230−30.5% | Reduced |
| Pinebridge Investments, L.P. | 119,255 | $12.5M | 0.10% | −39,400−24.8% | Reduced |
| Sargent Investment Group, LLC | 125,638 | $12.8M | 2.10% | −1,972−1.5% | Reduced |
| Colony Group, LLC | 122,285 | $12.9M | 0.03% | +89,232+270.0% | Added |
| IFM Investors Pty Ltd | 122,823 | $12.9M | 0.13% | −5,198−4.1% | Reduced |
| Brookstone Capital Management | 122,859 | $12.9M | 0.19% | +31,064+33.8% | Added |
| Franklin Resources Inc | 124,916 | $13.1M | 0.00% | +3,707+3.1% | Added |
| Mutual Advisors, LLC | 120,845 | $13.3M | 0.39% | −2,978−2.4% | Reduced |
| Vert Asset Management LLC | 129,266 | $13.6M | 4.65% | +9,329+7.8% | Added |
| Employees Retirement System of Texas | 130,500 | $13.7M | 0.12% | +29,000+28.6% | Added |
| Ar Asset Management Inc | 130,600 | $13.7M | 3.11% | 00.0% | Unchanged |
| STRS Ohio | 131,100 | $13.8M | 0.05% | +48,300+58.3% | Added |
| Treasurer of the State of North Carolina | 131,490 | $13.8M | 0.05% | +610+0.5% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 131,522 | $13.8M | 0.03% | −30,347−18.7% | Reduced |
| CIBC World Markets Corp | 131,714 | $13.8M | 0.08% | +14,380+12.3% | Added |
| Qube Research & Technologies Ltd | 136,332 | $14.3M | 0.02% | +136,332 | New |
| Royal London Asset Management Ltd | 136,826 | $14.4M | 0.04% | +6,981+5.4% | Added |
| Voya Investment Management LLC | 137,341 | $14.4M | 0.01% | −12,992−8.6% | Reduced |
| Polar Asset Management Partners Inc. | 141,500 | $14.9M | 0.22% | +98,300+227.5% | Added |
| Cambridge Investment Research Advisors, Inc. | 144,111 | $15.1M | 0.05% | −1,588−1.1% | Reduced |
| Trust Co of Virginia | 145,731 | $15.3M | 1.41% | −6,778−4.4% | Reduced |
| QRG Capital Management, Inc. | 148,004 | $15.6M | 0.16% | −1,403−0.9% | Reduced |
| National Bank of Canada | 151,618 | $15.9M | 0.02% | −17,074−10.1% | Reduced |
| Heitman Real Estate Securities LLC | 151,684 | $15.9M | 1.03% | −458,516−75.1% | Reduced |
| Cetera Investment Advisers | 153,035 | $16.1M | 0.03% | −18,045−10.5% | Reduced |
| APG Asset Management N.V. | 159,200 | $16.2M | 0.05% | +159,200 | New |
| Chevy Chase Trust Holdings, Inc. | 153,995 | $16.2M | 0.05% | −3,284−2.1% | Reduced |
| Burney Co | 154,275 | $16.2M | 0.57% | +406+0.3% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 157,117 | $16.5M | 0.10% | +42,326+36.9% | Added |
| Toronto Dominion Bank | 158,877 | $16.7M | 0.03% | +12,801+8.8% | Added |
| Danske Bank A/S | 162,950 | $17.1M | 0.05% | +24,694+17.9% | Added |
| CIBC World Markets Inc. | 164,282 | $17.3M | 0.04% | −14,726−8.2% | Reduced |
| Dana Investment Advisors, Inc. | 164,304 | $17.3M | 0.57% | −6,812−4.0% | Reduced |
| Resona Asset Management Co.,Ltd. | 165,505 | $17.3M | 0.10% | +2,206+1.4% | Added |
| Susquehanna International Group, LLP | 169,106 | $17.8M | 0.03% | +15,980+10.4% | Added |
| Citigroup Inc | 170,868 | $18.0M | 0.02% | −97,521−36.3% | Reduced |
| Churchill Management Corp | 173,539 | $18.2M | 0.20% | +517+0.3% | Added |
| State of Alaska, Department of Revenue | 174,102 | $18.3M | 0.20% | +910+0.5% | Added |
| State of Wisconsin Investment Board | 178,628 | $18.8M | 0.05% | −8,127−4.4% | Reduced |
| United Capital Financial Advisers, LLC | 182,801 | $19.2M | 0.16% | +2,047+1.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 184,413 | $19.4M | 0.06% | −373−0.2% | Reduced |
| ExodusPoint Capital Management, LP | 186,499 | $19.6M | 0.20% | +186,499 | New |
| Manufacturers Life Insurance Company, The | 188,305 | $19.8M | 0.02% | −21,343−10.2% | Reduced |
| New York State Common Retirement Fund | 190,474 | $20.0M | 0.03% | −10,204−5.1% | Reduced |
| Knights of Columbus Asset Advisors LLC | 191,305 | $20.1M | 1.33% | +9,951+5.5% | Added |
| Korea Investment CORP | 198,842 | $20.9M | 0.05% | +90,851+84.1% | Added |
| Natixis Advisors, L.P. | 200,514 | $21.1M | 0.04% | −1,060−0.5% | Reduced |
| Storebrand Asset Management AS | 200,692 | $21.1M | 0.06% | +39,757+24.7% | Added |
| AQR Capital Management LLC | 203,864 | $21.2M | 0.03% | +40,162+24.5% | Added |
| Moran Wealth Management, LLC | 209,019 | $22.0M | 0.70% | −6,128−2.8% | Reduced |
| Handelsbanken Fonder AB | 209,970 | $22.1M | 0.08% | +2,425+1.2% | Added |
| Pacer Advisors, Inc. | 211,544 | $22.2M | 0.05% | +13,437+6.8% | Added |
| United Bank | 214,088 | $22.5M | 2.68% | −4,375−2.0% | Reduced |
| CI Private Wealth, LLC | 216,142 | $22.7M | 0.04% | −6,087−2.7% | Reduced |
| Canada Pension Plan Investment Board | 217,268 | $22.8M | 0.02% | −851,842−79.7% | Reduced |
| First Trust Advisors LP | 219,258 | $23.0M | 0.02% | −31,598−12.6% | Reduced |
| Man Group plc | 220,738 | $23.2M | 0.07% | +163,798+287.7% | Added |
| Commonwealth Equity Services, LLC | 225,063 | $23.7M | 0.03% | +2,361+1.1% | Added |
| Public Sector Pension Investment Board | 225,181 | $23.7M | 0.10% | +174,053+340.4% | Added |
| Credit Agricole S A | 229,068 | $24.1M | 0.08% | +42,796+23.0% | Added |
| Regions Financial Corp | 230,776 | $24.3M | 0.18% | +12,315+5.6% | Added |
| Ensign Peak Advisors, Inc | 232,200 | $24.4M | 0.04% | +7,759+3.5% | Added |
| Retirement Systems of Alabama | 233,176 | $24.5M | 0.09% | +132+0.1% | Added |
| Andra AP-fonden | 234,000 | $24.6M | 0.39% | +2,100+0.9% | Added |
| Schonfeld Strategic Advisors LLC | 235,628 | $24.8M | 0.16% | +220,673+1,475.6% | Added |
| Waterfront Capital Partners, LLC | 237,847 | $25.0M | 4.67% | −2,745−1.1% | Reduced |
| Envestnet Asset Management Inc | 245,463 | $25.8M | 0.01% | −210,140−46.1% | Reduced |
| Macquarie Group Ltd | 258,972 | $26.0M | 0.03% | −26,097−9.2% | Reduced |
| New York State Teachers Retirement System | 252,631 | $26.6M | 0.06% | −8,557−3.3% | Reduced |
| Stifel Financial Corp | 269,834 | $28.4M | 0.03% | −10,127−3.6% | Reduced |
| Swedbank AB | 288,938 | $30.4M | 0.04% | +60,886+26.7% | Added |
| State Board of Administration of Florida Retirement System | 289,226 | $30.4M | 0.06% | −1,080−0.4% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 294,679 | $31.0M | 0.08% | −14,614−4.7% | Reduced |
| Rockefeller Capital Management L.P. | 312,873 | $32.9M | 0.09% | −267,946−46.1% | Reduced |
| Adell Harriman & Carpenter Inc | 329,829 | $34.7M | 2.41% | +1,459+0.4% | Added |
| Blair William & Co | 334,522 | $35.2M | 0.10% | +578+0.2% | Added |
| Marble Harbor Investment Counsel, LLC | 346,570 | $36.4M | 4.02% | −3,431−1.0% | Reduced |
| Balyasny Asset Management LLC | 366,668 | $38.5M | 0.09% | +359,614+5,098.0% | Added |
| Eventide Asset Management, LLC | 373,863 | $39.3M | 0.72% | +30,027+8.7% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 377,576 | $39.7M | 0.08% | +377,576 | New |
| KBC Group NV | 402,261 | $42.3M | 0.12% | +96,869+31.7% | Added |
| National Pension Service | 402,813 | $42.3M | 0.04% | −56,665−12.3% | Reduced |
| Barclays PLC | 405,421 | $42.6M | 0.02% | −185,881−31.4% | Reduced |
| Principal Financial Group Inc | 415,368 | $43.7M | 0.02% | +62,917+17.9% | Added |
| Intech Investment Management LLC | 420,200 | $44.2M | 0.43% | +210,045+99.9% | Added |
| UBS Asset Management Americas Inc | 426,223 | $44.8M | 0.01% | −2,744,327−86.6% | Reduced |
| Aviva PLC | 429,473 | $45.1M | 0.12% | −8,126−1.9% | Reduced |
| California State Teachers Retirement System | 434,493 | $45.7M | 0.05% | −35,848−7.6% | Reduced |