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 2021
Institutional positions in Iron Mountain Inc as of Dec 31, 2021. 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
- 754
- +53 vs. Q3 2021
- Shares held
- 228.4M
- −36.3K (0.0%) vs. Q3 2021
- Total value
- $12.0B
- +$2.01B (+20.3%) vs. Q3 2021
- New holders
- 126
- 265 more added
- Sold out
- 73
- 243 more reduced
10 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2021: 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 2021
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Raymond James & Associates | 444,086 | $23.2M | 0.02% | +61,800+16.2% | Added |
| AXA S.A. | 447,600 | $23.4M | 0.06% | −104,200−18.9% | Reduced |
| Handelsbanken Fonder AB | 469,828 | $24.6M | 0.12% | −26,958−5.4% | Reduced |
| Stifel Financial Corp | 474,310 | $24.8M | 0.03% | +89,480+23.3% | Added |
| Marble Harbor Investment Counsel, LLC | 475,049 | $24.9M | 2.90% | +1280.0% | Added |
| Alliancebernstein L.P. | 485,876 | $25.4M | 0.01% | −53,824−10.0% | Reduced |
| Ameriprise Financial Inc | 494,811 | $25.9M | 0.01% | −74,381−13.1% | Reduced |
| Envestnet Asset Management Inc | 500,975 | $26.2M | 0.01% | −13,420−2.6% | Reduced |
| Price T Rowe Associates Inc | 505,864 | $26.5M | 0.00% | −16,964−3.2% | Reduced |
| California State Teachers Retirement System | 518,289 | $27.1M | 0.03% | +8,698+1.7% | Added |
| Cbre Clarion Securities LLC | 536,000 | $28.0M | 0.40% | +536,000 | New |
| Rhumbline Advisers | 537,569 | $28.1M | 0.03% | +18,097+3.5% | Added |
| Royal Bank of Canada | 542,492 | $28.4M | 0.01% | +291,755+116.4% | Added |
| Amundi | 654,287 | $29.9M | 0.02% | −2,071,226−76.0% | Reduced |
| UBS Group AG | 590,468 | $30.9M | 0.01% | −40,968−6.5% | Reduced |
| California Public Employees Retirement System | 646,270 | $33.8M | 0.02% | −25,989−3.9% | Reduced |
| Welch & Forbes LLC | 719,809 | $37.7M | 0.56% | −2,517−0.3% | Reduced |
| Allianz Asset Management GmbH | 736,514 | $38.5M | 0.03% | +261,705+55.1% | Added |
| First Republic Investment Management, Inc. | 749,918 | $39.2M | 0.08% | +19,518+2.7% | Added |
| Asset Management One Co.,Ltd. | 744,358 | $39.3M | 0.14% | +41,969+6.0% | Added |
| Barclays PLC | 752,376 | $39.4M | 0.02% | −240,704−24.2% | Reduced |
| Wells Fargo & Company | 936,955 | $49.0M | 0.01% | −124,191−11.7% | Reduced |
| Goldman Sachs Group Inc | 1,063,839 | $55.7M | 0.01% | +199,337+23.1% | Added |
| American Century Companies Inc | 1,067,252 | $55.8M | 0.04% | +424,273+66.0% | Added |
| Nuveen Asset Management, LLC | 1,080,006 | $56.5M | 0.02% | +41,834+4.0% | Added |
| Parametric Portfolio Associates LLC | 1,095,922 | $57.4M | 0.03% | +52,759+5.1% | Added |
| Swiss National Bank | 1,099,847 | $57.6M | 0.03% | −44,600−3.9% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,120,959 | $58.7M | 0.13% | −16,127−1.4% | Reduced |
| Bank of America Corp | 1,121,950 | $58.7M | 0.01% | +206,352+22.5% | Added |
| Rockefeller Capital Management L.P. | 1,153,872 | $60.4M | 0.28% | +409,697+55.1% | Added |
| Nordea Investment Management AB | 1,189,915 | $62.9M | 0.08% | +207,484+21.1% | Added |
| UBS Asset Management Americas Inc | 1,214,925 | $63.6M | 0.02% | −3,651−0.3% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,342,091 | $70.2M | 0.04% | +188,979+16.4% | Added |
| Pacer Advisors, Inc. | 1,542,308 | $80.7M | 0.83% | −10,542−0.7% | Reduced |
| Janus Henderson Group PLC | 1,578,972 | $82.6M | 0.03% | +619,903+64.6% | Added |
| Legal & General Group Plc | 1,860,045 | $97.3M | 0.03% | −59,396−3.1% | Reduced |
| Deutsche Bank AG | 1,882,137 | $98.5M | 0.04% | −78,464−4.0% | Reduced |
| JPMorgan Chase & Co | 2,484,928 | $130.0M | 0.02% | +102,022+4.3% | Added |
| Epoch Investment Partners, Inc. | 2,698,689 | $141.2M | 0.72% | −860,480−24.2% | Reduced |
| LSV Asset Management | 2,722,168 | $142.5M | 0.25% | +35,174+1.3% | Added |
| Morgan Stanley | 2,854,882 | $149.4M | 0.02% | −1,340,279−31.9% | Reduced |
| Norges Bank | 2,873,379 | $150.4M | 0.03% | +256,943+9.8% | Added |
| Bank of New York Mellon Corp | 3,152,985 | $165.0M | 0.03% | −63,504−2.0% | Reduced |
| Charles Schwab Investment Management Inc | 3,463,122 | $181.2M | 0.05% | +49,254+1.4% | Added |
| FMR LLC | 3,980,943 | $208.3M | 0.02% | −175,559−4.2% | Reduced |
| Dimensional Fund Advisors LP | 4,149,976 | $217.2M | 0.07% | −72,078−1.7% | Reduced |
| Invesco Ltd. | 4,304,955 | $225.3M | 0.05% | +47,331+1.1% | Added |
| Northern Trust Corp | 4,559,165 | $238.6M | 0.04% | +300,897+7.1% | Added |
| Geode Capital Management, LLC | 6,413,135 | $336.2M | 0.04% | +82,900+1.3% | Added |
| State Street Corp | 14,360,244 | $760.2M | 0.04% | +522,760+3.8% | Added |
| BlackRock Inc. | 22,998,096 | $1.20B | 0.03% | +127,479+0.6% | Added |
| Capital World Investors | 32,713,760 | $1.71B | 0.27% | +3,5890.0% | Added |
| Vanguard Group Inc | 48,432,157 | $2.53B | 0.06% | −201,911−0.4% | Reduced |
| Westside Investment Management, Inc. | 26 | – | – | 00.0% | Unchanged |
| Zimmer Partners, LP | 0 | $0 | 0.00% | −287,500−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −138,697−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −136,100−100.0% | Sold out |
| Duality Advisers, LP | 0 | $0 | 0.00% | −129,996−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| AMP Capital Investors Ltd | 0 | $0 | 0.00% | −98,796−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −54,566−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −45,263−100.0% | Sold out |
| Avenir Corp | 0 | $0 | 0.00% | −39,130−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −36,100−100.0% | Sold out |
| Worldquant Millennium Advisors LLC | 0 | $0 | 0.00% | −34,982−100.0% | Sold out |
| Ontario Teachers Pension Plan Board | 0 | $0 | 0.00% | −31,476−100.0% | Sold out |
| Pearl River Capital, LLC | 0 | $0 | 0.00% | −30,152−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −29,126−100.0% | Sold out |
| Eii Capital Management, Inc. | 0 | $0 | 0.00% | −25,700−100.0% | Sold out |
| Arkadios Wealth Advisors | 0 | $0 | 0.00% | −25,534−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −20,382−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −19,503−100.0% | Sold out |
| Financial Engines Advisors L.L.C. | 0 | $0 | 0.00% | −19,034−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −17,454−100.0% | Sold out |
| Diamant Asset Management, Inc. | 0 | $0 | 0.00% | −14,775−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −14,200−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −13,906−100.0% | Sold out |
| Quantedge Capital Pte Ltd | 0 | $0 | 0.00% | −13,700−100.0% | Sold out |
| Teza Capital Management LLC | 0 | $0 | 0.00% | −11,706−100.0% | Sold out |
| Lombard Odier Asset Management (Switzerland) SA | 0 | $0 | 0.00% | −11,582−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −10,927−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −9,900−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −9,344−100.0% | Sold out |
| Impax Asset Management Group plc | 0 | $0 | 0.00% | −9,261−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −8,556−100.0% | Sold out |
| Diversified Trust Co | 0 | $0 | 0.00% | −8,099−100.0% | Sold out |
| Keybank National Association | 0 | $0 | 0.00% | −7,480−100.0% | Sold out |
| Van Hulzen Asset Management, LLC | 0 | $0 | 0.00% | −7,050−100.0% | Sold out |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0 | $0 | 0.00% | −6,709−100.0% | Sold out |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −6,579−100.0% | Sold out |
| Meristem Family Wealth, LLC | 0 | $0 | 0.00% | −6,486−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −6,186−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −5,964−100.0% | Sold out |
| NuWave Investment Management, LLC | 0 | $0 | 0.00% | −5,656−100.0% | Sold out |
| Busey Wealth Management | 0 | $0 | 0.00% | −5,180−100.0% | Sold out |
| Morris Capital Advisors, LLC | 0 | $0 | 0.00% | −5,198−100.0% | Sold out |
| Cooper Financial Group | 0 | $0 | 0.00% | −5,100−100.0% | Sold out |
| Synovus Financial Corp | 0 | $0 | 0.00% | −4,985−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −4,974−100.0% | Sold out |
| AlphaStar Capital Management, LLC | 0 | $0 | 0.00% | −4,726−100.0% | Sold out |