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, Q2 2021
Institutional positions in Iron Mountain Inc as of Jun 30, 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
- 687
- +60 vs. Q1 2021
- Shares held
- 229.0M
- +3.86M (+1.7%) vs. Q1 2021
- Total value
- $9.70B
- +$1.37B (+16.4%) vs. Q1 2021
- New holders
- 112
- 253 more added
- Sold out
- 52
- 218 more reduced
3 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2021
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Cubic Asset Management, LLC | 28,005 | $1.19M | 0.29% | −350−1.2% | Reduced |
| Quadrature Capital Ltd | 28,408 | $1.20M | 0.05% | +20,406+255.0% | Added |
| Norinchukin Bank, The | 28,982 | $1.23M | 0.02% | +236+0.8% | Added |
| Federated Hermes, Inc. | 29,011 | $1.23M | 0.00% | +99+0.3% | Added |
| Candriam Luxembourg S.C.A. | 29,249 | $1.24M | 0.01% | −3,572−10.9% | Reduced |
| Tower Research Capital LLC (TRC) | 29,385 | $1.24M | 0.03% | −10,763−26.8% | Reduced |
| Hudson Portfolio Management LLC | 29,475 | $1.25M | 1.15% | 00.0% | Unchanged |
| ING Groep NV | 29,559 | $1.25M | 0.02% | +10,463+54.8% | Added |
| Monument Capital Management | 29,655 | $1.25M | 0.43% | +4,760+19.1% | Added |
| Richard P Slaughter Associates Inc | 30,003 | $1.27M | 0.49% | +361+1.2% | Added |
| Teamwork Financial Advisors, LLC | 30,049 | $1.27M | 0.26% | −1,822−5.7% | Reduced |
| DekaBank Deutsche Girozentrale | 31,113 | $1.31M | 0.00% | −6,976−18.3% | Reduced |
| Dumont & Blake Investment Advisors LLC | 30,981 | $1.31M | 0.37% | +391+1.3% | Added |
| Arkadios Wealth Advisors | 31,073 | $1.31M | 0.16% | −3,280−9.5% | Reduced |
| APG Asset Management N.V. | 38,105 | $1.36M | 0.00% | −200−0.5% | Reduced |
| Madison Asset Management, LLC | 32,222 | $1.36M | 0.02% | +1,226+4.0% | Added |
| Ancora Advisors, LLC | 32,417 | $1.37M | 0.04% | −796−2.4% | Reduced |
| RFG Advisory, LLC | 32,916 | $1.39M | 0.12% | −3,642−10.0% | Reduced |
| Acadian Asset Management LLC | 33,170 | $1.40M | 0.01% | +32,486+4,749.4% | Added |
| Alps Advisors Inc | 33,418 | $1.41M | 0.01% | −1,734−4.9% | Reduced |
| Holderness Investments Co | 33,576 | $1.42M | 0.47% | +1,221+3.8% | Added |
| Ontario Teachers Pension Plan Board | 34,268 | $1.45M | 0.02% | +11,754+52.2% | Added |
| Kavar Capital Partners Group, LLC | 34,298 | $1.45M | 0.35% | −24,130−41.3% | Reduced |
| Achmea Investment Management B.V. | 35,348 | $1.50M | 0.05% | +35,348 | New |
| Bessemer Group Inc | 35,367 | $1.50M | 0.00% | −20−0.1% | Reduced |
| RB Capital Management, LLC | 35,407 | $1.50M | 0.58% | +2,141+6.4% | Added |
| Tudor Investment Corp Et Al | 35,656 | $1.51M | 0.03% | +35,656 | New |
| KBC Group NV | 35,672 | $1.51M | 0.01% | −47,350−57.0% | Reduced |
| Shell Asset Management Co | 35,799 | $1.51M | 0.03% | −7,340−17.0% | Reduced |
| Pacitti Group Inc. | 35,892 | $1.52M | 0.91% | +1,401+4.1% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 36,175 | $1.53M | 0.02% | +103+0.3% | Added |
| Xponance, Inc. | 36,179 | $1.53M | 0.03% | +6,577+22.2% | Added |
| Mercer Global Advisors Inc | 36,301 | $1.54M | 0.01% | −2,041−5.3% | Reduced |
| Sippican Capital Advisors | 36,522 | $1.55M | 1.34% | −3,930−9.7% | Reduced |
| AE Wealth Management LLC | 36,978 | $1.56M | 0.01% | +834+2.3% | Added |
| Balyasny Asset Management LLC | 37,365 | $1.58M | 0.01% | +37,365 | New |
| Mutual of America Capital Management LLC | 37,690 | $1.59M | 0.02% | +363+1.0% | Added |
| Teacher Retirement System of Texas | 37,767 | $1.60M | 0.01% | +5,645+17.6% | Added |
| DnB Asset Management AS | 38,259 | $1.62M | 0.01% | +1,842+5.1% | Added |
| Loomis Sayles & Co L P | 38,314 | $1.62M | 0.00% | +38,115+19,153.3% | Added |
| Public Employees Retirement Association of Colorado | 38,491 | $1.63M | 0.01% | 00.0% | Unchanged |
| Schroder Investment Management Group | 39,004 | $1.65M | 0.00% | −110−0.3% | Reduced |
| Avenir Corp | 39,130 | $1.66M | 0.13% | 00.0% | Unchanged |
| CoreFirst Bank & Trust | 39,880 | $1.69M | 1.15% | +454+1.2% | Added |
| Virtus ETF Advisers LLC | 40,094 | $1.70M | 0.70% | −5,861−12.8% | Reduced |
| Concorde Asset Management, LLC | 40,405 | $1.71M | 0.96% | −12,252−23.3% | Reduced |
| CIBC World Markets Inc. | 40,823 | $1.73M | 0.01% | +13,425+49.0% | Added |
| Griffin Asset Management, Inc. | 40,967 | $1.73M | 0.21% | +113+0.3% | Added |
| Sculati Wealth Management, LLC | 41,102 | $1.74M | 0.92% | +375+0.9% | Added |
| IFM Investors Pty Ltd | 41,096 | $1.74M | 0.04% | +7,841+23.6% | Added |
| Ingalls & Snyder LLC | 41,518 | $1.76M | 0.08% | −4,450−9.7% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 41,960 | $1.77M | 0.04% | +3,125+8.0% | Added |
| Cetera Investment Advisers | 43,146 | $1.83M | 0.03% | +26,413+157.8% | Added |
| AlphaCrest Capital Management LLC | 43,406 | $1.84M | 0.08% | −55,560−56.1% | Reduced |
| Pensionfund Sabic | 44,000 | $1.86M | 0.40% | 00.0% | Unchanged |
| Horizon Investments, LLC | 44,176 | $1.87M | 0.06% | +33,391+309.6% | Added |
| Mackay Shields LLC | 44,522 | $1.88M | 0.02% | −7,812−14.9% | Reduced |
| Hartford Investment Management Co | 44,554 | $1.89M | 0.05% | +2,785+6.7% | Added |
| Searle & Co. | 45,200 | $1.91M | 0.78% | 00.0% | Unchanged |
| Banque Cantonale Vaudoise | 46,584 | $1.97M | 0.09% | +14,300+44.3% | Added |
| Teza Capital Management LLC | 46,801 | $1.98M | 0.32% | +29,047+163.6% | Added |
| Jane Street Group, LLC | 47,595 | $2.01M | 0.01% | −401,417−89.4% | Reduced |
| Texas Permanent School Fund | 47,967 | $2.03M | 0.02% | −194−0.4% | Reduced |
| Ensign Peak Advisors, Inc | 48,994 | $2.07M | 0.00% | −34,225−41.1% | Reduced |
| Vectors Research Management, LLC | 49,785 | $2.11M | 0.54% | +5,535+12.5% | Added |
| HNP Capital LLC | 49,785 | $2.11M | 0.56% | +5,948+13.6% | Added |
| MML Investors Services, LLC | 50,894 | $2.15M | 0.02% | −2,032−3.8% | Reduced |
| Wealthfront Advisers LLC | 52,060 | $2.20M | 0.01% | +10,354+24.8% | Added |
| Baird Financial Group, Inc. | 52,473 | $2.22M | 0.01% | −1,523−2.8% | Reduced |
| Werlinich Asset Management, LLC | 52,840 | $2.24M | 1.81% | 00.0% | Unchanged |
| Pearl River Capital, LLC | 52,956 | $2.24M | 0.62% | +52,956 | New |
| Public Sector Pension Investment Board | 52,281 | $2.26M | 0.01% | +22,339+74.6% | Added |
| British Columbia Investment Management Corp | 53,352 | $2.26M | 0.01% | +6,089+12.9% | Added |
| Eaton Vance Management | 53,663 | $2.27M | 0.00% | +12,446+30.2% | Added |
| DuPont Capital Management Corp | 54,159 | $2.29M | 0.05% | +23,967+79.4% | Added |
| SeaBridge Investment Advisors LLC | 54,570 | $2.31M | 0.74% | −125−0.2% | Reduced |
| Utah Retirement Systems | 54,814 | $2.32M | 0.03% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 54,900 | $2.32M | 0.01% | −28,300−34.0% | Reduced |
| Measured Wealth Private Client Group, LLC | 55,339 | $2.34M | 0.75% | +2,342+4.4% | Added |
| National Asset Management, Inc. | 55,420 | $2.35M | 0.08% | +2,482+4.7% | Added |
| Bank of Nova Scotia | 55,617 | $2.35M | 0.00% | +636+1.2% | Added |
| Nissay Asset Management Corp | 55,789 | $2.36M | 0.02% | +101+0.2% | Added |
| Russell Investments Group, Ltd. | 57,875 | $2.45M | 0.00% | −11,814−17.0% | Reduced |
| M&T Bank Corp | 58,750 | $2.49M | 0.01% | +3,935+7.2% | Added |
| Madden Securities Corp | 59,157 | $2.50M | 1.31% | −791−1.3% | Reduced |
| Ziegler Capital Management, LLC | 60,188 | $2.55M | 0.09% | −5,687−8.6% | Reduced |
| Thrivent Financial for Lutherans | 60,518 | $2.56M | 0.01% | +26,779+79.4% | Added |
| Susquehanna International Group, LLP | 62,466 | $2.64M | 0.00% | −22,473−26.5% | Reduced |
| HighTower Advisors, LLC | 62,744 | $2.65M | 0.01% | −23,430−27.2% | Reduced |
| Metropolitan Life Insurance Co | 63,249 | $2.68M | 0.04% | −10,675−14.4% | Reduced |
| Salem Investment Counselors Inc | 63,598 | $2.69M | 0.15% | −57,525−47.5% | Reduced |
| Cetera Advisors LLC | 64,247 | $2.72M | 0.06% | −1,687−2.6% | Reduced |
| MetLife Investment Management | 66,940 | $2.83M | 0.02% | −1,789−2.6% | Reduced |
| Advisors Asset Management, Inc. | 67,753 | $2.87M | 0.04% | +5,266+8.4% | Added |
| Truvestments Capital LLC | 68,168 | $2.88M | 1.58% | +5,920+9.5% | Added |
| Banco Bilbao Vizcaya Argentaria, S.A. | 69,177 | $2.93M | 0.05% | +23,158+50.3% | Added |
| Peapack Gladstone Financial Corp | 69,255 | $2.93M | 0.07% | −1,906−2.7% | Reduced |
| Cetera Advisor Networks LLC | 70,213 | $2.97M | 0.04% | +13,634+24.1% | Added |
| Burney Co | 70,445 | $2.98M | 0.14% | +19,876+39.3% | Added |
| Schonfeld Strategic Advisors LLC | 73,300 | $3.10M | 0.03% | +73,300 | New |