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, Q2 2023
Institutional positions in Iron Mountain Inc as of Jun 30, 2023. 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
- 817
- +35 vs. Q1 2023
- Shares held
- 227.1M
- +1.66M (+0.7%) vs. Q1 2023
- Total value
- $12.9B
- +$954.9M (+8.0%) vs. Q1 2023
- New holders
- 86
- 284 more added
- Sold out
- 51
- 292 more reduced
8 institutions that held it in Q1 2023 haven't filed for Q2 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2023: 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 2023
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 46,853,786 | $2.66B | 0.06% | −812,878−1.7% | Reduced |
| BlackRock Inc. | 22,381,853 | $1.27B | 0.04% | −23,877−0.1% | Reduced |
| Capital World Investors | 20,360,030 | $1.16B | 0.22% | −5,126,447−20.1% | Reduced |
| State Street Corp | 13,915,104 | $799.1M | 0.04% | +117,817+0.9% | Added |
| Cohen & Steers, Inc. | 7,725,767 | $438.9M | 0.92% | +4,798,010+163.9% | Added |
| Geode Capital Management, LLC | 7,392,778 | $419.1M | 0.05% | −389,150−5.0% | Reduced |
| Deutsche Bank AG | 4,541,862 | $258.1M | 0.14% | −42,334−0.9% | Reduced |
| Morgan Stanley | 4,375,104 | $248.6M | 0.02% | −488,293−10.0% | Reduced |
| Dimensional Fund Advisors LP | 4,271,464 | $242.7M | 0.08% | +52,274+1.2% | Added |
| Northern Trust Corp | 3,865,926 | $219.7M | 0.04% | +71,749+1.9% | Added |
| Amundi | 3,811,690 | $217.3M | 0.11% | +627,055+19.7% | Added |
| Charles Schwab Investment Management Inc | 3,795,269 | $215.6M | 0.06% | +19,337+0.5% | Added |
| FMR LLC | 3,732,135 | $212.1M | 0.02% | −80,326−2.1% | Reduced |
| Pictet Asset Management SA | 3,369,780 | $191.5M | 0.23% | +39,746+1.2% | Added |
| Epoch Investment Partners, Inc. | 2,725,178 | $154.8M | 0.90% | −160,192−5.6% | Reduced |
| Bank of New York Mellon Corp | 2,365,962 | $134.4M | 0.03% | −148,297−5.9% | Reduced |
| Legal & General Group Plc | 2,283,697 | $129.8M | 0.04% | +171,754+8.1% | Added |
| Invesco Ltd. | 2,166,096 | $123.1M | 0.03% | −48,130−2.2% | Reduced |
| Norges Bank | 2,064,551 | $117.3M | 0.02% | −12,516−0.6% | Reduced |
| JPMorgan Chase & Co | 1,959,785 | $111.4M | 0.01% | +141,684+7.8% | Added |
| Daiwa Securities Group Inc. | 1,867,040 | $106.1M | 0.70% | +1,753,325+1,541.9% | Added |
| Prudential Financial Inc | 1,314,926 | $74.7M | 0.11% | +844,211+179.3% | Added |
| CIBC Private Wealth Group, LLC | 1,254,063 | $71.3M | 0.16% | +63,315+5.3% | Added |
| DekaBank Deutsche Girozentrale | 1,122,995 | $63.6M | 0.14% | +49,666+4.6% | Added |
| Russell Investments Group, Ltd. | 1,084,084 | $61.4M | 0.12% | +106,471+10.9% | Added |
| Swiss National Bank | 1,052,861 | $59.8M | 0.04% | −100,900−8.7% | Reduced |
| Neuberger Berman Group LLC | 1,018,538 | $57.9M | 0.05% | −140,242−12.1% | Reduced |
| Agf Management Ltd | 977,795 | $55.6M | 0.40% | −26,382−2.6% | Reduced |
| UBS Asset Management Americas Inc | 1,037,676 | $54.9M | 0.03% | 00.0% | Unchanged |
| Sumitomo Mitsui Trust Holdings, Inc. | 963,316 | $54.7M | 0.04% | −101,077−9.5% | Reduced |
| Rockefeller Capital Management L.P. | 896,935 | $51.0M | 0.20% | −96,131−9.7% | Reduced |
| Bank of America Corp | 881,538 | $50.1M | 0.01% | −638,883−42.0% | Reduced |
| Nuveen Asset Management, LLC | 870,377 | $49.5M | 0.02% | −28,609−3.2% | Reduced |
| Canada Pension Plan Investment Board | 867,590 | $49.3M | 0.07% | +2,000+0.2% | Added |
| UBS Group AG | 862,308 | $49.0M | 0.02% | +257,544+42.6% | Added |
| Goldman Sachs Group Inc | 834,129 | $47.4M | 0.01% | −226,123−21.3% | Reduced |
| American Century Companies Inc | 824,730 | $46.9M | 0.04% | −33,977−4.0% | Reduced |
| Welch & Forbes LLC | 744,524 | $42.3M | 0.67% | −1610.0% | Reduced |
| Wellington Management Group LLP | 725,549 | $41.2M | 0.01% | +56,745+8.5% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 717,670 | $40.8M | 0.13% | +671,934+1,469.2% | Added |
| Wells Fargo & Company | 679,386 | $38.6M | 0.01% | −26,791−3.8% | Reduced |
| Asset Management One Co.,Ltd. | 675,384 | $38.4M | 0.16% | +4,839+0.7% | Added |
| Rhumbline Advisers | 649,133 | $36.9M | 0.04% | −9,059−1.4% | Reduced |
| Citadel Advisors LLC | 616,764 | $35.0M | 0.04% | +402,227+187.5% | Added |
| Intech Investment Management LLC | 606,810 | $34.5M | 0.36% | −461,331−43.2% | Reduced |
| Border to Coast Pensions Partnership Ltd | 606,040 | $34.4M | 0.86% | 00.0% | Unchanged |
| Barclays PLC | 599,593 | $34.1M | 0.02% | +281,617+88.6% | Added |
| Envestnet Asset Management Inc | 598,724 | $34.0M | 0.02% | −106,036−15.0% | Reduced |
| California Public Employees Retirement System | 585,081 | $33.2M | 0.03% | −14,898−2.5% | Reduced |
| Bank of Montreal | 581,287 | $33.0M | 0.02% | +83,869+16.9% | Added |
| Ameriprise Financial Inc | 549,059 | $31.2M | 0.01% | −131,028−19.3% | Reduced |
| Royal Bank of Canada | 525,374 | $29.9M | 0.01% | −70,844−11.9% | Reduced |
| Credit Suisse AG | 522,971 | $29.7M | 0.03% | +136,911+35.5% | Added |
| Stifel Financial Corp | 516,367 | $29.3M | 0.04% | −91,044−15.0% | Reduced |
| Pacer Advisors, Inc. | 493,749 | $28.1M | 0.11% | −156,402−24.1% | Reduced |
| California State Teachers Retirement System | 475,649 | $27.0M | 0.04% | −10,840−2.2% | Reduced |
| Price T Rowe Associates Inc | 475,549 | $27.0M | 0.00% | +1,678+0.4% | Added |
| LPL Financial LLC | 471,266 | $26.8M | 0.02% | +40,629+9.4% | Added |
| Marble Harbor Investment Counsel, LLC | 466,909 | $26.5M | 3.34% | −1,855−0.4% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 444,705 | $25.3M | 0.04% | +28,997+7.0% | Added |
| Millennium Management LLC | 440,687 | $25.0M | 0.03% | +269,813+157.9% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 423,978 | $24.1M | 0.05% | +37,858+9.8% | Added |
| National Pension Service | 428,189 | $24.0M | 0.04% | −39,135−8.4% | Reduced |
| SG Americas Securities, LLC | 414,783 | $23.6M | 0.20% | +105,494+34.1% | Added |
| Cookson Peirce & Co Inc | 408,059 | $23.2M | 1.42% | −7,799−1.9% | Reduced |
| Nomura Asset Management Co Ltd | 402,004 | $22.8M | 0.11% | +9,200+2.3% | Added |
| Alliancebernstein L.P. | 397,575 | $22.6M | 0.01% | +3,186+0.8% | Added |
| CI Private Wealth, LLC | 393,465 | $22.4M | 0.05% | +352,788+867.3% | Added |
| Brookstone Capital Management | 368,952 | $21.4M | 0.43% | +6,615+1.8% | Added |
| HSBC Holdings PLC | 369,192 | $20.9M | 0.02% | +52,342+16.5% | Added |
| Aviva PLC | 366,678 | $20.8M | 0.08% | −48,955−11.8% | Reduced |
| Raymond James & Associates | 356,722 | $20.3M | 0.02% | −34,291−8.8% | Reduced |
| Blair William & Co | 352,651 | $20.0M | 0.07% | −5,820−1.6% | Reduced |
| New York State Common Retirement Fund | 346,054 | $19.7M | 0.03% | +30,254+9.6% | Added |
| Principal Financial Group Inc | 343,693 | $19.5M | 0.01% | −13,714−3.8% | Reduced |
| Adell Harriman & Carpenter Inc | 321,111 | $18.4M | 1.87% | −3,765−1.2% | Reduced |
| TD Asset Management Inc | 323,463 | $18.4M | 0.02% | −36,185−10.1% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 322,578 | $18.3M | 0.04% | −18,017−5.3% | Reduced |
| New York State Teachers Retirement System | 319,250 | $18.1M | 0.04% | −3,768−1.2% | Reduced |
| Great West Life Assurance Co | 315,768 | $18.0M | 0.04% | −2,782−0.9% | Reduced |
| State Board of Administration of Florida Retirement System | 313,509 | $17.8M | 0.04% | −7,983−2.5% | Reduced |
| SEI Investments Co | 307,382 | $17.5M | 0.03% | +119,166+63.3% | Added |
| Dana Investment Advisors, Inc. | 305,578 | $17.4M | 0.86% | −18,827−5.8% | Reduced |
| United Bank | 301,007 | $17.1M | 2.10% | −16,995−5.3% | Reduced |
| Captrust Financial Advisors | 283,920 | $16.1M | 0.06% | −2,049−0.7% | Reduced |
| BNP Paribas Arbitrage, SA | 281,783 | $16.0M | 0.03% | +26,747+10.5% | Added |
| Crossmark Global Holdings, Inc. | 252,837 | $15.3M | 0.33% | +10,876+4.5% | Added |
| First Trust Advisors LP | 260,702 | $14.8M | 0.02% | −33,201−11.3% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 250,990 | $14.3M | 0.03% | +11,588+4.8% | Added |
| Lazard Asset Management LLC | 244,307 | $13.9M | 0.02% | +8,640+3.7% | Added |
| Retirement Systems of Alabama | 244,152 | $13.9M | 0.06% | −18,719−7.1% | Reduced |
| Adage Capital Partners GP, L.L.C. | 240,552 | $13.7M | 0.03% | +74,500+44.9% | Added |
| Swedbank AB | 235,702 | $13.4M | 0.02% | −33,272−12.4% | Reduced |
| Uniplan Investment Counsel, Inc. | 226,364 | $12.9M | 0.93% | +226,364 | New |
| United Capital Financial Advisers, LLC | 225,797 | $12.8M | 0.07% | +362+0.2% | Added |
| Citigroup Inc | 225,179 | $12.8M | 0.02% | −129,485−36.5% | Reduced |
| Cinctive Capital Management LP | 214,329 | $12.2M | 0.48% | −5,083−2.3% | Reduced |
| Guggenheim Capital LLC | 212,797 | $12.1M | 0.10% | −4,648−2.1% | Reduced |
| Manufacturers Life Insurance Company, The | 207,365 | $11.8M | 0.01% | −3,828−1.8% | Reduced |
| Gilman Hill Asset Management, LLC | 205,753 | $11.7M | 2.18% | −1,681−0.8% | Reduced |