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 |
|---|---|---|---|---|---|
| Cinctive Capital Management LP | 311,800 | $15.5M | 0.80% | +111,375+55.6% | Added |
| Great West Life Assurance Co | 315,574 | $15.8M | 0.04% | −3,044−1.0% | Reduced |
| Adell Harriman & Carpenter Inc | 320,386 | $16.0M | 1.84% | +13,093+4.3% | Added |
| State Board of Administration of Florida Retirement System | 321,492 | $16.0M | 0.04% | −8,730−2.6% | Reduced |
| Brookstone Capital Management | 316,231 | $16.0M | 0.32% | +68,980+27.9% | Added |
| Dana Investment Advisors, Inc. | 327,828 | $16.3M | 0.86% | −11,207−3.3% | Reduced |
| New York State Common Retirement Fund | 328,300 | $16.4M | 0.02% | −1,000−0.3% | Reduced |
| United Bank | 335,572 | $16.7M | 2.34% | +7,823+2.4% | Added |
| New York State Teachers Retirement System | 338,640 | $16.9M | 0.04% | −2,238−0.7% | Reduced |
| TD Asset Management Inc | 343,717 | $17.1M | 0.02% | +24,770+7.8% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 349,573 | $17.4M | 0.05% | +28,322+8.8% | Added |
| Principal Financial Group Inc | 355,756 | $17.7M | 0.01% | −6,915−1.9% | Reduced |
| Avalon Investment & Advisory | 358,557 | $17.9M | 0.51% | −1,089−0.3% | Reduced |
| Blair William & Co | 361,561 | $18.0M | 0.08% | +4,716+1.3% | Added |
| Nomura Asset Management Co Ltd | 387,983 | $19.3M | 0.11% | +25,074+6.9% | Added |
| STRS Ohio | 389,264 | $19.4M | 0.09% | +85,301+28.1% | Added |
| Raymond James & Associates | 405,159 | $20.2M | 0.02% | +6,545+1.6% | Added |
| Cookson Peirce & Co Inc | 412,009 | $20.5M | 1.34% | +7,763+1.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 414,010 | $20.6M | 0.05% | +6,509+1.6% | Added |
| Credit Suisse AG | 419,117 | $20.9M | 0.02% | +29,102+7.5% | Added |
| Alliancebernstein L.P. | 425,849 | $21.2M | 0.01% | −32,402−7.1% | Reduced |
| Citadel Advisors LLC | 431,313 | $21.5M | 0.02% | +242,403+128.3% | Added |
| LPL Financial LLC | 432,172 | $21.5M | 0.02% | +24,295+6.0% | Added |
| SG Americas Securities, LLC | 432,704 | $21.6M | 0.32% | +412,247+2,015.2% | Added |
| Voya Investment Management LLC | 452,328 | $22.5M | 0.03% | −8,201−1.8% | Reduced |
| Price T Rowe Associates Inc | 462,263 | $23.0M | 0.00% | +16,689+3.7% | Added |
| Marble Harbor Investment Counsel, LLC | 471,632 | $23.5M | 3.17% | +3,692+0.8% | Added |
| California State Teachers Retirement System | 491,263 | $24.5M | 0.04% | +4,081+0.8% | Added |
| National Pension Service | 511,839 | $25.5M | 0.05% | +10,238+2.0% | Added |
| HSBC Holdings PLC | 523,031 | $26.0M | 0.03% | +264,202+102.1% | Added |
| Marshall Wace, LLP | 535,256 | $26.7M | 0.07% | +260,985+95.2% | Added |
| Ameriprise Financial Inc | 548,633 | $27.4M | 0.01% | +63,561+13.1% | Added |
| Envestnet Asset Management Inc | 577,187 | $28.8M | 0.01% | +10,996+1.9% | Added |
| Rockefeller Capital Management L.P. | 582,293 | $29.0M | 0.15% | −499,298−46.2% | Reduced |
| Stifel Financial Corp | 597,108 | $29.8M | 0.04% | +46,291+8.4% | Added |
| Rhumbline Advisers | 624,282 | $31.1M | 0.04% | +43,365+7.5% | Added |
| Royal Bank of Canada | 626,733 | $31.2M | 0.01% | −332,463−34.7% | Reduced |
| California Public Employees Retirement System | 685,684 | $34.2M | 0.03% | +18,048+2.7% | Added |
| Asset Management One Co.,Ltd. | 693,684 | $34.8M | 0.17% | +66,419+10.6% | Added |
| Wells Fargo & Company | 702,363 | $35.0M | 0.01% | +2,639+0.4% | Added |
| Border to Coast Pensions Partnership Ltd | 706,040 | $35.2M | 1.13% | −40,000−5.4% | Reduced |
| Pacer Advisors, Inc. | 737,470 | $36.8M | 0.19% | −250,664−25.4% | Reduced |
| Welch & Forbes LLC | 750,145 | $37.4M | 0.67% | +12,087+1.6% | Added |
| First Republic Investment Management, Inc. | 785,757 | $39.2M | 0.09% | +13,120+1.7% | Added |
| Russell Investments Group, Ltd. | 795,757 | $39.7M | 0.08% | −40,039−4.8% | Reduced |
| UBS Group AG | 798,496 | $39.8M | 0.02% | +230,675+40.6% | Added |
| Canada Pension Plan Investment Board | 822,352 | $41.0M | 0.07% | −45,238−5.2% | Reduced |
| Wellington Management Group LLP | 832,622 | $41.5M | 0.01% | +169,906+25.6% | Added |
| American Century Companies Inc | 834,967 | $41.6M | 0.03% | +228,113+37.6% | Added |
| Nuveen Asset Management, LLC | 875,005 | $43.6M | 0.02% | −92,827−9.6% | Reduced |
| Goldman Sachs Group Inc | 904,103 | $45.1M | 0.01% | +24,165+2.7% | Added |
| Barclays PLC | 933,554 | $46.5M | 0.04% | +345,769+58.8% | Added |
| Agf Management Ltd | 943,549 | $47.0M | 0.34% | +943,549 | New |
| Bank of America Corp | 950,761 | $47.4M | 0.01% | +116,360+13.9% | Added |
| UBS Asset Management Americas Inc | 1,008,668 | $50.3M | 0.03% | +18,512+1.9% | Added |
| DekaBank Deutsche Girozentrale | 1,019,913 | $50.8M | 0.13% | +139,304+15.8% | Added |
| Neuberger Berman Group LLC | 1,113,043 | $55.5M | 0.05% | −254,276−18.6% | Reduced |
| LSV Asset Management | 1,155,544 | $57.6M | 0.13% | −68,579−5.6% | Reduced |
| Swiss National Bank | 1,181,461 | $58.9M | 0.04% | −77,686−6.2% | Reduced |
| Cbre Clarion Securities LLC | 1,237,999 | $61.7M | 1.08% | +833,378+206.0% | Added |
| Intech Investment Management LLC | 1,306,209 | $65.1M | 0.49% | +6,403+0.5% | Added |
| Bank of Montreal | 1,296,492 | $71.4M | 0.06% | +830,061+178.0% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,460,319 | $72.8M | 0.06% | −253,884−14.8% | Reduced |
| JPMorgan Chase & Co | 1,814,920 | $90.5M | 0.01% | +171,171+10.4% | Added |
| Norges Bank | 1,960,931 | $97.8M | 0.02% | +148,597+8.2% | Added |
| Legal & General Group Plc | 2,049,696 | $102.2M | 0.04% | −99,361−4.6% | Reduced |
| Bank of New York Mellon Corp | 2,592,419 | $129.2M | 0.03% | −406,387−13.6% | Reduced |
| Epoch Investment Partners, Inc. | 2,624,390 | $130.8M | 0.78% | −35,820−1.3% | Reduced |
| Pictet Asset Management SA | 3,609,323 | $179.9M | 0.26% | −421,167−10.4% | Reduced |
| FMR LLC | 3,734,205 | $186.2M | 0.02% | −38,188−1.0% | Reduced |
| Northern Trust Corp | 3,736,296 | $186.3M | 0.04% | +541,022+16.9% | Added |
| Charles Schwab Investment Management Inc | 3,740,163 | $186.4M | 0.06% | +132,442+3.7% | Added |
| Amundi | 3,728,741 | $188.0M | 0.10% | +116,511+3.2% | Added |
| Dimensional Fund Advisors LP | 4,103,133 | $204.5M | 0.07% | +54,106+1.3% | Added |
| Deutsche Bank AG | 4,147,354 | $206.7M | 0.12% | +127,868+3.2% | Added |
| Invesco Ltd. | 4,151,288 | $206.9M | 0.06% | +196,798+5.0% | Added |
| Morgan Stanley | 5,063,627 | $252.4M | 0.03% | −307,090−5.7% | Reduced |
| Geode Capital Management, LLC | 6,944,305 | $345.6M | 0.05% | +172,801+2.6% | Added |
| State Street Corp | 14,248,628 | $719.1M | 0.04% | −251,936−1.7% | Reduced |
| BlackRock Inc. | 22,618,888 | $1.13B | 0.04% | −120,419−0.5% | Reduced |
| Capital World Investors | 25,481,171 | $1.27B | 0.27% | +801,125+3.2% | Added |
| Vanguard Group Inc | 47,429,924 | $2.36B | 0.06% | −16,9450.0% | Reduced |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −298,516−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −130,211−100.0% | Sold out |
| AlphaCrest Capital Management LLC | 0 | $0 | 0.00% | −49,741−100.0% | Sold out |
| Horizon Investments, LLC | 0 | $0 | 0.00% | −29,991−100.0% | Sold out |
| Triasima Portfolio Management inc. | 0 | $0 | 0.00% | −28,470−100.0% | Sold out |
| Foresight Wealth Management, LLC | 0 | $0 | 0.00% | −28,429−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −26,748−100.0% | Sold out |
| AdvisorShares Investments LLC | 0 | $0 | 0.00% | −19,138−100.0% | Sold out |
| Chiron Investment Management, LLC | 0 | $0 | 0.00% | −11,908−100.0% | Sold out |
| Brookfield Asset Management Inc. | 0 | $0 | 0.00% | −9,512−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −8,240−100.0% | Sold out |
| Black Swift Group, LLC | 0 | $0 | 0.00% | −7,975−100.0% | Sold out |
| All Season Financial Advisors, Inc. | 0 | $0 | 0.00% | −7,218−100.0% | Sold out |
| Wakefield Asset Management LLLP | 0 | $0 | 0.00% | −6,560−100.0% | Sold out |
| MQS Management LLC | 0 | $0 | 0.00% | −6,117−100.0% | Sold out |
| Diversified Trust Co | 0 | $0 | 0.00% | −5,945−100.0% | Sold out |
| Sunbelt Securities, Inc. | 0 | $0 | 0.00% | −5,550−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −5,154−100.0% | Sold out |