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 |
|---|---|---|---|---|---|
| Cubist Systematic Strategies, LLC | 274,192 | $11.6M | 0.13% | +268,243+4,509.0% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 274,793 | $11.6M | 0.07% | +2,498+0.9% | Added |
| Natixis | 274,855 | $11.6M | 0.05% | +93,734+51.8% | Added |
| Boston Common Asset Management, LLC | 275,074 | $11.6M | 0.50% | +18,663+7.3% | Added |
| Adell Harriman & Carpenter Inc | 277,270 | $11.7M | 1.24% | +6,695+2.5% | Added |
| Swedbank AB | 281,658 | $11.9M | 0.02% | +16,428+6.2% | Added |
| Great West Life Assurance Co | 283,477 | $12.0M | 0.03% | +51,128+22.0% | Added |
| Manufacturers Life Insurance Company, The | 287,069 | $12.1M | 0.01% | +867+0.3% | Added |
| Stifel Financial Corp | 288,799 | $12.2M | 0.02% | +34,620+13.6% | Added |
| Robeco Institutional Asset Management B.V. | 293,875 | $12.4M | 0.03% | +48,330+19.7% | Added |
| Royal Bank of Canada | 294,900 | $12.5M | 0.00% | +27,101+10.1% | Added |
| TCW Group Inc | 295,468 | $12.5M | 0.11% | +49,085+19.9% | Added |
| Retirement Systems of Alabama | 303,638 | $12.8M | 0.05% | −2,436−0.8% | Reduced |
| Adage Capital Partners GP, L.L.C. | 304,852 | $12.9M | 0.03% | −7,500−2.4% | Reduced |
| Hall Private Wealth Advisors | 326,310 | $13.8M | 8.99% | +326,310 | New |
| STRS Ohio | 327,585 | $13.9M | 0.05% | −16,651−4.8% | Reduced |
| New York State Common Retirement Fund | 328,318 | $13.9M | 0.01% | −9,982−3.0% | Reduced |
| New York State Teachers Retirement System | 334,262 | $14.1M | 0.03% | −43,344−11.5% | Reduced |
| SG Americas Securities, LLC | 345,325 | $14.6M | 0.08% | −18,593−5.1% | Reduced |
| Millennium Management LLC | 347,236 | $14.7M | 0.02% | −185,229−34.8% | Reduced |
| Raymond James & Associates | 352,552 | $14.9M | 0.01% | −436,081−55.3% | Reduced |
| Nomura Asset Management Co Ltd | 352,777 | $14.9M | 0.09% | −3,094−0.9% | Reduced |
| State Board of Administration of Florida Retirement System | 355,310 | $15.0M | 0.03% | −4,210−1.2% | Reduced |
| Credit Suisse AG | 360,822 | $15.3M | 0.01% | −72,775−16.8% | Reduced |
| Principal Financial Group Inc | 364,153 | $15.4M | 0.01% | +7,013+2.0% | Added |
| TD Asset Management Inc | 356,548 | $15.6M | 0.02% | −76,142−17.6% | Reduced |
| Renaissance Technologies LLC | 372,563 | $15.8M | 0.02% | +258,100+225.5% | Added |
| PGGM Investments | 382,308 | $16.2M | 0.07% | +42,534+12.5% | Added |
| Janus Henderson Group PLC | 385,201 | $16.3M | 0.01% | +277,012+256.0% | Added |
| United Bank | 391,700 | $16.6M | 2.23% | −4,452−1.1% | Reduced |
| LPL Financial LLC | 398,712 | $16.9M | 0.02% | +20,696+5.5% | Added |
| Avalon Investment & Advisory | 415,119 | $17.6M | 0.39% | −29,111−6.6% | Reduced |
| Prudential Financial Inc | 419,905 | $17.8M | 0.02% | −13,275−3.1% | Reduced |
| Bank of Montreal | 415,045 | $17.9M | 0.01% | +185,231+80.6% | Added |
| Susquehanna Fundamental Investments, LLC | 431,477 | $18.3M | 0.33% | 00.0% | Unchanged |
| Marble Harbor Investment Counsel, LLC | 474,841 | $20.1M | 2.59% | −4,651−1.0% | Reduced |
| Handelsbanken Fonder AB | 483,508 | $20.5M | 0.11% | +414,436+600.0% | Added |
| Ameriprise Financial Inc | 485,979 | $20.6M | 0.01% | −74,819−13.3% | Reduced |
| AXA S.A. | 508,400 | $21.5M | 0.06% | −126,500−19.9% | Reduced |
| Envestnet Asset Management Inc | 509,419 | $21.6M | 0.01% | −9,021−1.7% | Reduced |
| Rhumbline Advisers | 514,983 | $21.8M | 0.03% | −25,539−4.7% | Reduced |
| California State Teachers Retirement System | 519,404 | $22.0M | 0.03% | −19,038−3.5% | Reduced |
| Commerce Bank | 521,691 | $22.1M | 0.16% | −1970.0% | Reduced |
| Price T Rowe Associates Inc | 530,731 | $22.5M | 0.00% | −12,090−2.2% | Reduced |
| UBS Group AG | 541,008 | $22.9M | 0.01% | +83,059+18.1% | Added |
| Alliancebernstein L.P. | 577,860 | $24.5M | 0.01% | +96,343+20.0% | Added |
| First Republic Investment Management, Inc. | 669,499 | $28.3M | 0.07% | +3,688+0.6% | Added |
| HSBC Holdings PLC | 708,129 | $30.0M | 0.04% | +270,916+62.0% | Added |
| Welch & Forbes LLC | 719,483 | $30.4M | 0.51% | −416−0.1% | Reduced |
| Rockefeller Capital Management L.P. | 722,451 | $30.6M | 0.17% | −20,242−2.7% | Reduced |
| Citigroup Inc | 740,201 | $31.3M | 0.03% | +35,800+5.1% | Added |
| Goldman Sachs Group Inc | 769,838 | $32.6M | 0.01% | +153,318+24.9% | Added |
| Asset Management One Co.,Ltd. | 778,029 | $32.9M | 0.12% | −29,685−3.7% | Reduced |
| American Century Companies Inc | 794,194 | $33.6M | 0.02% | −1,032,762−56.5% | Reduced |
| Bank of America Corp | 805,402 | $34.1M | 0.00% | −141,311−14.9% | Reduced |
| Barclays PLC | 838,052 | $35.5M | 0.03% | +335,658+66.8% | Added |
| State of Tennessee, Treasury Department | 903,516 | $38.2M | 0.15% | −49,857−5.2% | Reduced |
| Nordea Investment Management AB | 931,893 | $39.4M | 0.05% | +46,327+5.2% | Added |
| Parametric Portfolio Associates LLC | 1,049,087 | $44.4M | 0.02% | +98,784+10.4% | Added |
| Mirae Asset Global Investments Co., Ltd. | 1,155,590 | $48.9M | 0.14% | +90,366+8.5% | Added |
| Swiss National Bank | 1,179,047 | $49.9M | 0.03% | +71,447+6.5% | Added |
| Pacer Advisors, Inc. | 1,186,996 | $50.2M | 0.72% | −122,976−9.4% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,201,105 | $50.8M | 0.03% | −106,739−8.2% | Reduced |
| Nuveen Asset Management, LLC | 1,203,664 | $50.9M | 0.02% | −102,379−7.8% | Reduced |
| Wells Fargo & Company | 1,227,683 | $52.0M | 0.01% | +297,464+32.0% | Added |
| UBS Asset Management Americas Inc | 1,418,508 | $60.0M | 0.03% | −363,357−20.4% | Reduced |
| Legal & General Group Plc | 1,882,070 | $79.6M | 0.03% | +102,033+5.7% | Added |
| Deutsche Bank AG | 2,054,852 | $87.0M | 0.04% | −5,895−0.3% | Reduced |
| California Public Employees Retirement System | 2,254,191 | $95.4M | 0.07% | −12,192−0.5% | Reduced |
| LSV Asset Management | 2,337,136 | $98.9M | 0.17% | −79,000−3.3% | Reduced |
| JPMorgan Chase & Co | 2,533,316 | $107.2M | 0.01% | −128,322−4.8% | Reduced |
| Norges Bank | 2,574,552 | $109.0M | 0.02% | −129,937−4.8% | Reduced |
| Amundi | 2,700,049 | $114.3M | 0.08% | +2,700,049 | New |
| Morgan Stanley | 3,055,300 | $129.3M | 0.02% | +1,123,761+58.2% | Added |
| Bank of New York Mellon Corp | 3,243,239 | $137.3M | 0.03% | +87,337+2.8% | Added |
| Charles Schwab Investment Management Inc | 3,306,514 | $139.9M | 0.05% | +39,874+1.2% | Added |
| Northern Trust Corp | 3,664,176 | $155.1M | 0.03% | −57,883−1.6% | Reduced |
| Epoch Investment Partners, Inc. | 3,745,139 | $158.5M | 0.85% | −1,210,838−24.4% | Reduced |
| FMR LLC | 4,173,858 | $176.6M | 0.01% | −1,034,668−19.9% | Reduced |
| Dimensional Fund Advisors LP | 4,266,177 | $180.5M | 0.06% | +14,291+0.3% | Added |
| Invesco Ltd. | 4,877,382 | $206.4M | 0.05% | +54,089+1.1% | Added |
| Geode Capital Management, LLC | 6,098,671 | $258.4M | 0.04% | +67,748+1.1% | Added |
| State Street Corp | 13,457,306 | $577.6M | 0.03% | +841,781+6.7% | Added |
| BlackRock Inc. | 23,134,540 | $979.1M | 0.03% | +258,708+1.1% | Added |
| Capital World Investors | 32,712,961 | $1.38B | 0.24% | +39,255+0.1% | Added |
| Vanguard Group Inc | 48,504,119 | $2.05B | 0.05% | −118,109−0.2% | Reduced |
| Westside Investment Management, Inc. | 26 | – | – | 00.0% | Unchanged |
| River Road Asset Management, LLC | 0 | $0 | 0.00% | −388,510−100.0% | Sold out |
| Prudential PLC | 0 | $0 | 0.00% | −320,475−100.0% | Sold out |
| Capital Square, LLC | 0 | $0 | 0.00% | −80,134−100.0% | Sold out |
| Caisse de Depot Et Placement du Quebec | 0 | $0 | 0.00% | −66,608−100.0% | Sold out |
| Jennison Associates LLC | 0 | $0 | 0.00% | −59,154−100.0% | Sold out |
| Northwest & Ethical Investments L.P. | 0 | $0 | 0.00% | −47,574−100.0% | Sold out |
| Columbia Asset Management | 0 | $0 | 0.00% | −43,594−100.0% | Sold out |
| Bramshill Investments, LLC | 0 | $0 | 0.00% | −42,439−100.0% | Sold out |
| Mathes Company, Inc. | 0 | $0 | 0.00% | −38,950−100.0% | Sold out |
| Fernwood Investment Management, LLC | 0 | $0 | 0.00% | −28,562−100.0% | Sold out |
| Telemus Capital, LLC | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −16,039−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −12,727−100.0% | Sold out |