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 |
|---|---|---|---|---|---|
| Agf Investments Inc. | 42,812 | $2.24M | 0.02% | −12,777−23.0% | Reduced |
| SeaBridge Investment Advisors LLC | 43,024 | $2.25M | 0.72% | −11,015−20.4% | Reduced |
| Thrivent Financial for Lutherans | 43,291 | $2.27M | 0.00% | −1,523−3.4% | Reduced |
| Pacitti Group Inc. | 43,318 | $2.27M | 1.47% | +455+1.1% | Added |
| GWM Advisors LLC | 43,787 | $2.29M | 0.03% | +14,361+48.8% | Added |
| Mackay Shields LLC | 43,826 | $2.29M | 0.02% | −2,232−4.8% | Reduced |
| Hartford Investment Management Co | 43,864 | $2.29M | 0.05% | +2,597+6.3% | Added |
| Virtus ETF Advisers LLC | 43,963 | $2.30M | 0.87% | +7,679+21.2% | Added |
| Pensionfund Sabic | 44,000 | $2.30M | 0.43% | 00.0% | Unchanged |
| Baird Financial Group, Inc. | 44,065 | $2.31M | 0.01% | −5,696−11.4% | Reduced |
| DnB Asset Management AS | 44,268 | $2.32M | 0.01% | +4,352+10.9% | Added |
| D.A. Davidson & Co. | 44,498 | $2.33M | 0.02% | +6,005+15.6% | Added |
| Castleview Partners, LLC | 123,080 | $2.35M | 0.02% | +123,080 | New |
| Gulf International Bank (UK) Ltd | 45,064 | $2.36M | 0.03% | +45,064 | New |
| Searle & Co. | 45,200 | $2.37M | 0.86% | 00.0% | Unchanged |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 46,007 | $2.41M | 0.05% | +2,621+6.0% | Added |
| Hussman Strategic Advisors, Inc. | 46,000 | $2.41M | 0.53% | +46,000 | New |
| National Asset Management, Inc. | 46,466 | $2.43M | 0.07% | −241−0.5% | Reduced |
| Cetera Investment Advisers | 46,788 | $2.45M | 0.04% | +4,112+9.6% | Added |
| Shell Asset Management Co | 46,981 | $2.46M | 0.05% | +7,243+18.2% | Added |
| Schroder Investment Management Group | 47,142 | $2.47M | 0.00% | +1,440+3.2% | Added |
| TKG Advisors, LLC | 47,530 | $2.49M | 1.96% | +47,530 | New |
| State of Tennessee, Treasury Department | 48,047 | $2.51M | 0.01% | −738−1.5% | Reduced |
| Vert Asset Management LLC | 48,266 | $2.53M | 2.08% | +48,266 | New |
| Public Sector Pension Investment Board | 48,310 | $2.53M | 0.01% | −7,584−13.6% | Reduced |
| Disciplined Equity Management, Inc. | 49,535 | $2.59M | 2.50% | +49,535 | New |
| EAM Global Investors LLC | 50,211 | $2.63M | 0.47% | +22,003+78.0% | Added |
| British Columbia Investment Management Corp | 50,719 | $2.65M | 0.01% | −2,633−4.9% | Reduced |
| Eaton Vance Management | 50,881 | $2.66M | 0.00% | +203+0.4% | Added |
| Moody National Bank Trust Division | 51,080 | $2.67M | 0.08% | −150,440−74.7% | Reduced |
| Utah Retirement Systems | 51,914 | $2.72M | 0.03% | +100+0.2% | Added |
| DekaBank Deutsche Girozentrale | 52,382 | $2.76M | 0.01% | +10,487+25.0% | Added |
| Werlinich Asset Management, LLC | 52,840 | $2.77M | 2.01% | 00.0% | Unchanged |
| MML Investors Services, LLC | 53,317 | $2.79M | 0.02% | −546−1.0% | Reduced |
| HNP Capital LLC | 53,966 | $2.82M | 0.64% | +1,994+3.8% | Added |
| Russell Investments Group, Ltd. | 54,003 | $2.83M | 0.00% | −3,951−6.8% | Reduced |
| Moody Lynn & Lieberson, LLC | 54,076 | $2.83M | 0.19% | +54,076 | New |
| Vident Investment Advisory, LLC | 54,337 | $2.85M | 0.07% | +1,902+3.6% | Added |
| Vectors Research Management, LLC | 54,823 | $2.87M | 0.61% | +2,000+3.8% | Added |
| Tower Research Capital LLC (TRC) | 55,302 | $2.89M | 0.05% | +37,875+217.3% | Added |
| Teacher Retirement System of Texas | 55,849 | $2.92M | 0.01% | −16,355−22.7% | Reduced |
| The PNC Financial Services Group, Inc. | 55,947 | $2.93M | 0.00% | −50,923−47.6% | Reduced |
| Madden Securities Corp | 56,744 | $2.97M | 1.39% | −546−1.0% | Reduced |
| Edgestream Partners, L.P. | 57,490 | $3.01M | 0.19% | +31,130+118.1% | Added |
| Yousif Capital Management, LLC | 58,005 | $3.04M | 0.03% | +58,005 | New |
| Comerica Bank | 68,976 | $3.04M | 0.02% | −165−0.2% | Reduced |
| Achmea Investment Management B.V. | 58,428 | $3.06M | 0.15% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 58,855 | $3.08M | 0.02% | −155,500−72.5% | Reduced |
| Nissay Asset Management Corp | 59,429 | $3.11M | 0.02% | +868+1.5% | Added |
| Nepsis, Inc. | 59,894 | $3.13M | 0.91% | +104+0.2% | Added |
| CIBC Private Wealth Group, LLC | 59,896 | $3.13M | 0.01% | +40,364+206.7% | Added |
| Peapack Gladstone Financial Corp | 60,511 | $3.17M | 0.06% | −120.0% | Reduced |
| Metropolitan Life Insurance Co | 61,154 | $3.20M | 0.04% | −1,617−2.6% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 61,675 | $3.24M | 0.02% | −193,318−75.8% | Reduced |
| Beck Capital Management, LLC | 62,520 | $3.27M | 1.01% | −24,014−27.8% | Reduced |
| Squarepoint Ops LLC | 63,372 | $3.32M | 0.02% | −16,174−20.3% | Reduced |
| USS Investment Management Ltd | 63,698 | $3.33M | 0.03% | 00.0% | Unchanged |
| MetLife Investment Management | 63,972 | $3.35M | 0.03% | −1,404−2.1% | Reduced |
| HighTower Advisors, LLC | 65,012 | $3.40M | 0.01% | +4,880+8.1% | Added |
| Susquehanna International Group, LLP | 65,282 | $3.42M | 0.01% | +31,029+90.6% | Added |
| M&T Bank Corp | 65,323 | $3.42M | 0.01% | +5,696+9.6% | Added |
| Salem Investment Counselors Inc | 66,966 | $3.50M | 0.12% | +1,193+1.8% | Added |
| Victory Capital Management Inc | 67,431 | $3.53M | 0.00% | −4,324−6.0% | Reduced |
| Pinebridge Investments, L.P. | 67,548 | $3.54M | 0.04% | +65,267+2,861.3% | Added |
| Integrated Advisors Network LLC | 68,032 | $3.56M | 0.21% | +68,032 | New |
| Oliver Luxxe Assets LLC | 68,323 | $3.58M | 0.91% | 00.0% | Unchanged |
| Cetera Advisors LLC | 68,615 | $3.59M | 0.07% | −408−0.6% | Reduced |
| Advisors Asset Management, Inc. | 69,374 | $3.63M | 0.05% | −2,533−3.5% | Reduced |
| Truvestments Capital LLC | 70,937 | $3.71M | 1.86% | +357+0.5% | Added |
| Cetera Advisor Networks LLC | 74,855 | $3.92M | 0.05% | +793+1.1% | Added |
| Breiter Capital Management Inc | 75,603 | $3.96M | 1.94% | −41−0.1% | Reduced |
| Franklin Resources Inc | 75,886 | $3.97M | 0.00% | −30,917−28.9% | Reduced |
| Bank of Nova Scotia | 76,081 | $3.98M | 0.01% | −22,940−23.2% | Reduced |
| Peak Financial Advisors LLC | 76,979 | $4.03M | 3.10% | +1,696+2.3% | Added |
| Erste Asset Management GmbH | 77,300 | $4.08M | 0.07% | −10,700−12.2% | Reduced |
| Donoghue Forlines LLC | 78,475 | $4.11M | 0.69% | +15,326+24.3% | Added |
| Arizona State Retirement System | 78,810 | $4.12M | 0.03% | −2,219−2.7% | Reduced |
| Jane Street Group, LLC | 79,571 | $4.16M | 0.01% | +48,690+157.7% | Added |
| Banco Bilbao Vizcaya Argentaria, S.A. | 80,606 | $4.24M | 0.06% | +11,286+16.3% | Added |
| Catalyst Capital Advisors LLC | 82,070 | $4.29M | 0.20% | +71,700+691.4% | Added |
| Wealthfront Advisers LLC | 82,654 | $4.33M | 0.02% | −10,038−10.8% | Reduced |
| Siemens Fonds Invest GmbH | 82,499 | $4.33M | 0.29% | −12,719−13.4% | Reduced |
| National Pension Service | 83,245 | $4.36M | 0.01% | 00.0% | Unchanged |
| G&S Capital LLC | 83,624 | $4.38M | 2.18% | +23,351+38.7% | Added |
| State of Michigan Retirement System | 84,194 | $4.41M | 0.02% | +6,198+7.9% | Added |
| Nelson Capital Management, LLC | 87,559 | $4.58M | 0.85% | −241−0.3% | Reduced |
| Aviva PLC | 87,732 | $4.59M | 0.02% | −125−0.1% | Reduced |
| TD Private Client Wealth LLC | 88,303 | $4.62M | 0.19% | −12,051−12.0% | Reduced |
| ETF Managers Group, LLC | 88,469 | $4.65M | 0.09% | +88,469 | New |
| American International Group, Inc. | 88,931 | $4.65M | 0.02% | +809+0.9% | Added |
| Burney Co | 88,958 | $4.66M | 0.20% | +5,646+6.8% | Added |
| Azimuth Capital Management LLC | 89,340 | $4.67M | 0.19% | −2,328−2.5% | Reduced |
| Private Advisor Group, LLC | 90,611 | $4.74M | 0.04% | −6,187−6.4% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 90,665 | $4.74M | 0.04% | −14,700−14.0% | Reduced |
| Macquarie Group Ltd | 92,753 | $4.85M | 0.00% | −47,433−33.8% | Reduced |
| Sonora Investment Management Group, LLC | 93,214 | $4.88M | 0.57% | +93,214 | New |
| Chicago Capital, LLC | 93,465 | $4.89M | 0.18% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 94,149 | $4.93M | 0.05% | −18,640−16.5% | Reduced |
| Moors & Cabot, Inc. | 95,751 | $5.01M | 0.31% | +4,910+5.4% | Added |
| Cambridge Investment Research Advisors, Inc. | 96,872 | $5.07M | 0.02% | −1,059−1.1% | Reduced |