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 8 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 2022
Institutional positions in Iron Mountain Inc as of Dec 31, 2022. 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
- 782
- +54 vs. Q3 2022
- Shares held
- 228.9M
- +3.02M (+1.3%) vs. Q3 2022
- Total value
- $11.4B
- +$1.43B (+14.3%) vs. Q3 2022
- New holders
- 93
- 300 more added
- Sold out
- 39
- 251 more reduced
15 institutions that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2022: 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 2022
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 47,429,924 | $2.36B | 0.06% | −16,9450.0% | Reduced |
| Capital World Investors | 25,481,171 | $1.27B | 0.27% | +801,125+3.2% | Added |
| BlackRock Inc. | 22,618,888 | $1.13B | 0.04% | −120,419−0.5% | Reduced |
| State Street Corp | 14,248,628 | $719.1M | 0.04% | −251,936−1.7% | Reduced |
| Geode Capital Management, LLC | 6,944,305 | $345.6M | 0.05% | +172,801+2.6% | Added |
| Morgan Stanley | 5,063,627 | $252.4M | 0.03% | −307,090−5.7% | Reduced |
| Invesco Ltd. | 4,151,288 | $206.9M | 0.06% | +196,798+5.0% | Added |
| Deutsche Bank AG | 4,147,354 | $206.7M | 0.12% | +127,868+3.2% | Added |
| Dimensional Fund Advisors LP | 4,103,133 | $204.5M | 0.07% | +54,106+1.3% | Added |
| Amundi | 3,728,741 | $188.0M | 0.10% | +116,511+3.2% | Added |
| Charles Schwab Investment Management Inc | 3,740,163 | $186.4M | 0.06% | +132,442+3.7% | Added |
| Northern Trust Corp | 3,736,296 | $186.3M | 0.04% | +541,022+16.9% | Added |
| FMR LLC | 3,734,205 | $186.2M | 0.02% | −38,188−1.0% | Reduced |
| Pictet Asset Management SA | 3,609,323 | $179.9M | 0.26% | −421,167−10.4% | Reduced |
| Epoch Investment Partners, Inc. | 2,624,390 | $130.8M | 0.78% | −35,820−1.3% | Reduced |
| Bank of New York Mellon Corp | 2,592,419 | $129.2M | 0.03% | −406,387−13.6% | Reduced |
| Legal & General Group Plc | 2,049,696 | $102.2M | 0.04% | −99,361−4.6% | Reduced |
| Norges Bank | 1,960,931 | $97.8M | 0.02% | +148,597+8.2% | Added |
| JPMorgan Chase & Co | 1,814,920 | $90.5M | 0.01% | +171,171+10.4% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,460,319 | $72.8M | 0.06% | −253,884−14.8% | Reduced |
| Bank of Montreal | 1,296,492 | $71.4M | 0.06% | +830,061+178.0% | Added |
| Intech Investment Management LLC | 1,306,209 | $65.1M | 0.49% | +6,403+0.5% | Added |
| Cbre Clarion Securities LLC | 1,237,999 | $61.7M | 1.08% | +833,378+206.0% | Added |
| Swiss National Bank | 1,181,461 | $58.9M | 0.04% | −77,686−6.2% | Reduced |
| LSV Asset Management | 1,155,544 | $57.6M | 0.13% | −68,579−5.6% | Reduced |
| Neuberger Berman Group LLC | 1,113,043 | $55.5M | 0.05% | −254,276−18.6% | Reduced |
| DekaBank Deutsche Girozentrale | 1,019,913 | $50.8M | 0.13% | +139,304+15.8% | Added |
| UBS Asset Management Americas Inc | 1,008,668 | $50.3M | 0.03% | +18,512+1.9% | Added |
| Bank of America Corp | 950,761 | $47.4M | 0.01% | +116,360+13.9% | Added |
| Agf Management Ltd | 943,549 | $47.0M | 0.34% | +943,549 | New |
| Barclays PLC | 933,554 | $46.5M | 0.04% | +345,769+58.8% | Added |
| Goldman Sachs Group Inc | 904,103 | $45.1M | 0.01% | +24,165+2.7% | Added |
| Nuveen Asset Management, LLC | 875,005 | $43.6M | 0.02% | −92,827−9.6% | Reduced |
| American Century Companies Inc | 834,967 | $41.6M | 0.03% | +228,113+37.6% | Added |
| Wellington Management Group LLP | 832,622 | $41.5M | 0.01% | +169,906+25.6% | Added |
| Canada Pension Plan Investment Board | 822,352 | $41.0M | 0.07% | −45,238−5.2% | Reduced |
| UBS Group AG | 798,496 | $39.8M | 0.02% | +230,675+40.6% | Added |
| Russell Investments Group, Ltd. | 795,757 | $39.7M | 0.08% | −40,039−4.8% | Reduced |
| First Republic Investment Management, Inc. | 785,757 | $39.2M | 0.09% | +13,120+1.7% | Added |
| Welch & Forbes LLC | 750,145 | $37.4M | 0.67% | +12,087+1.6% | Added |
| Pacer Advisors, Inc. | 737,470 | $36.8M | 0.19% | −250,664−25.4% | Reduced |
| Border to Coast Pensions Partnership Ltd | 706,040 | $35.2M | 1.13% | −40,000−5.4% | Reduced |
| Wells Fargo & Company | 702,363 | $35.0M | 0.01% | +2,639+0.4% | Added |
| Asset Management One Co.,Ltd. | 693,684 | $34.8M | 0.17% | +66,419+10.6% | Added |
| California Public Employees Retirement System | 685,684 | $34.2M | 0.03% | +18,048+2.7% | Added |
| Royal Bank of Canada | 626,733 | $31.2M | 0.01% | −332,463−34.7% | Reduced |
| Rhumbline Advisers | 624,282 | $31.1M | 0.04% | +43,365+7.5% | Added |
| Stifel Financial Corp | 597,108 | $29.8M | 0.04% | +46,291+8.4% | Added |
| Rockefeller Capital Management L.P. | 582,293 | $29.0M | 0.15% | −499,298−46.2% | Reduced |
| Envestnet Asset Management Inc | 577,187 | $28.8M | 0.01% | +10,996+1.9% | Added |
| Ameriprise Financial Inc | 548,633 | $27.4M | 0.01% | +63,561+13.1% | Added |
| Marshall Wace, LLP | 535,256 | $26.7M | 0.07% | +260,985+95.2% | Added |
| HSBC Holdings PLC | 523,031 | $26.0M | 0.03% | +264,202+102.1% | Added |
| National Pension Service | 511,839 | $25.5M | 0.05% | +10,238+2.0% | Added |
| California State Teachers Retirement System | 491,263 | $24.5M | 0.04% | +4,081+0.8% | Added |
| Marble Harbor Investment Counsel, LLC | 471,632 | $23.5M | 3.17% | +3,692+0.8% | Added |
| Price T Rowe Associates Inc | 462,263 | $23.0M | 0.00% | +16,689+3.7% | Added |
| Voya Investment Management LLC | 452,328 | $22.5M | 0.03% | −8,201−1.8% | Reduced |
| SG Americas Securities, LLC | 432,704 | $21.6M | 0.32% | +412,247+2,015.2% | Added |
| LPL Financial LLC | 432,172 | $21.5M | 0.02% | +24,295+6.0% | Added |
| Citadel Advisors LLC | 431,313 | $21.5M | 0.02% | +242,403+128.3% | Added |
| Alliancebernstein L.P. | 425,849 | $21.2M | 0.01% | −32,402−7.1% | Reduced |
| Credit Suisse AG | 419,117 | $20.9M | 0.02% | +29,102+7.5% | Added |
| Mirae Asset Global Investments Co., Ltd. | 414,010 | $20.6M | 0.05% | +6,509+1.6% | Added |
| Cookson Peirce & Co Inc | 412,009 | $20.5M | 1.34% | +7,763+1.9% | Added |
| Raymond James & Associates | 405,159 | $20.2M | 0.02% | +6,545+1.6% | Added |
| STRS Ohio | 389,264 | $19.4M | 0.09% | +85,301+28.1% | Added |
| Nomura Asset Management Co Ltd | 387,983 | $19.3M | 0.11% | +25,074+6.9% | Added |
| Blair William & Co | 361,561 | $18.0M | 0.08% | +4,716+1.3% | Added |
| Avalon Investment & Advisory | 358,557 | $17.9M | 0.51% | −1,089−0.3% | Reduced |
| Principal Financial Group Inc | 355,756 | $17.7M | 0.01% | −6,915−1.9% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 349,573 | $17.4M | 0.05% | +28,322+8.8% | Added |
| TD Asset Management Inc | 343,717 | $17.1M | 0.02% | +24,770+7.8% | Added |
| New York State Teachers Retirement System | 338,640 | $16.9M | 0.04% | −2,238−0.7% | Reduced |
| United Bank | 335,572 | $16.7M | 2.34% | +7,823+2.4% | Added |
| New York State Common Retirement Fund | 328,300 | $16.4M | 0.02% | −1,000−0.3% | Reduced |
| Dana Investment Advisors, Inc. | 327,828 | $16.3M | 0.86% | −11,207−3.3% | Reduced |
| Brookstone Capital Management | 316,231 | $16.0M | 0.32% | +68,980+27.9% | Added |
| State Board of Administration of Florida Retirement System | 321,492 | $16.0M | 0.04% | −8,730−2.6% | Reduced |
| Adell Harriman & Carpenter Inc | 320,386 | $16.0M | 1.84% | +13,093+4.3% | Added |
| Great West Life Assurance Co | 315,574 | $15.8M | 0.04% | −3,044−1.0% | Reduced |
| Cinctive Capital Management LP | 311,800 | $15.5M | 0.80% | +111,375+55.6% | Added |
| Allianz Asset Management GmbH | 308,525 | $15.4M | 0.03% | −7,910−2.5% | Reduced |
| Adage Capital Partners GP, L.L.C. | 295,652 | $14.7M | 0.04% | −500−0.2% | Reduced |
| AXA S.A. | 291,908 | $14.6M | 0.05% | −15,174−4.9% | Reduced |
| Captrust Financial Advisors | 274,811 | $13.7M | 0.07% | +11,098+4.2% | Added |
| Swedbank AB | 272,637 | $13.6M | 0.03% | −22,818−7.7% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 270,993 | $13.5M | 0.02% | −209,676−43.6% | Reduced |
| Retirement Systems of Alabama | 270,532 | $13.5M | 0.06% | −8,450−3.0% | Reduced |
| Prudential Financial Inc | 256,938 | $12.8M | 0.02% | −217,876−45.9% | Reduced |
| Citigroup Inc | 253,965 | $12.7M | 0.02% | −140,645−35.6% | Reduced |
| Hall Private Wealth Advisors | 248,262 | $12.4M | 7.04% | +1,719+0.7% | Added |
| BNP Paribas Arbitrage, SA | 245,240 | $12.2M | 0.03% | +121,598+98.3% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 243,735 | $12.2M | 0.03% | +950.0% | Added |
| Crossmark Global Holdings, Inc. | 234,551 | $11.7M | 0.29% | +9,231+4.1% | Added |
| United Capital Financial Advisers, LLC | 233,987 | $11.7M | 0.07% | −3,729−1.6% | Reduced |
| First Trust Advisors LP | 230,188 | $11.5M | 0.01% | +47,492+26.0% | Added |
| Raymond James Financial Services Advisors, Inc. | 219,345 | $10.9M | 0.02% | −4,622−2.1% | Reduced |
| Aviva PLC | 219,262 | $10.9M | 0.05% | −70,379−24.3% | Reduced |
| Robeco Institutional Asset Management B.V. | 213,979 | $10.7M | 0.03% | +13,577+6.8% | Added |