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 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 |
|---|---|---|---|---|---|
| Vanguard Group Inc | 48,504,119 | $2.05B | 0.05% | −118,109−0.2% | Reduced |
| Capital World Investors | 32,712,961 | $1.38B | 0.24% | +39,255+0.1% | Added |
| BlackRock Inc. | 23,134,540 | $979.1M | 0.03% | +258,708+1.1% | Added |
| State Street Corp | 13,457,306 | $577.6M | 0.03% | +841,781+6.7% | Added |
| Geode Capital Management, LLC | 6,098,671 | $258.4M | 0.04% | +67,748+1.1% | Added |
| Invesco Ltd. | 4,877,382 | $206.4M | 0.05% | +54,089+1.1% | Added |
| Dimensional Fund Advisors LP | 4,266,177 | $180.5M | 0.06% | +14,291+0.3% | Added |
| FMR LLC | 4,173,858 | $176.6M | 0.01% | −1,034,668−19.9% | Reduced |
| Epoch Investment Partners, Inc. | 3,745,139 | $158.5M | 0.85% | −1,210,838−24.4% | Reduced |
| Northern Trust Corp | 3,664,176 | $155.1M | 0.03% | −57,883−1.6% | Reduced |
| Charles Schwab Investment Management Inc | 3,306,514 | $139.9M | 0.05% | +39,874+1.2% | Added |
| Bank of New York Mellon Corp | 3,243,239 | $137.3M | 0.03% | +87,337+2.8% | Added |
| Morgan Stanley | 3,055,300 | $129.3M | 0.02% | +1,123,761+58.2% | Added |
| Amundi | 2,700,049 | $114.3M | 0.08% | +2,700,049 | New |
| Norges Bank | 2,574,552 | $109.0M | 0.02% | −129,937−4.8% | Reduced |
| JPMorgan Chase & Co | 2,533,316 | $107.2M | 0.01% | −128,322−4.8% | Reduced |
| LSV Asset Management | 2,337,136 | $98.9M | 0.17% | −79,000−3.3% | Reduced |
| California Public Employees Retirement System | 2,254,191 | $95.4M | 0.07% | −12,192−0.5% | Reduced |
| Deutsche Bank AG | 2,054,852 | $87.0M | 0.04% | −5,895−0.3% | Reduced |
| Legal & General Group Plc | 1,882,070 | $79.6M | 0.03% | +102,033+5.7% | Added |
| UBS Asset Management Americas Inc | 1,418,508 | $60.0M | 0.03% | −363,357−20.4% | Reduced |
| Wells Fargo & Company | 1,227,683 | $52.0M | 0.01% | +297,464+32.0% | Added |
| Nuveen Asset Management, LLC | 1,203,664 | $50.9M | 0.02% | −102,379−7.8% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,201,105 | $50.8M | 0.03% | −106,739−8.2% | Reduced |
| Pacer Advisors, Inc. | 1,186,996 | $50.2M | 0.72% | −122,976−9.4% | Reduced |
| Swiss National Bank | 1,179,047 | $49.9M | 0.03% | +71,447+6.5% | Added |
| Mirae Asset Global Investments Co., Ltd. | 1,155,590 | $48.9M | 0.14% | +90,366+8.5% | Added |
| Parametric Portfolio Associates LLC | 1,049,087 | $44.4M | 0.02% | +98,784+10.4% | Added |
| Nordea Investment Management AB | 931,893 | $39.4M | 0.05% | +46,327+5.2% | Added |
| State of Tennessee, Treasury Department | 903,516 | $38.2M | 0.15% | −49,857−5.2% | Reduced |
| Barclays PLC | 838,052 | $35.5M | 0.03% | +335,658+66.8% | Added |
| Bank of America Corp | 805,402 | $34.1M | 0.00% | −141,311−14.9% | Reduced |
| American Century Companies Inc | 794,194 | $33.6M | 0.02% | −1,032,762−56.5% | Reduced |
| Asset Management One Co.,Ltd. | 778,029 | $32.9M | 0.12% | −29,685−3.7% | Reduced |
| Goldman Sachs Group Inc | 769,838 | $32.6M | 0.01% | +153,318+24.9% | Added |
| Citigroup Inc | 740,201 | $31.3M | 0.03% | +35,800+5.1% | Added |
| Rockefeller Capital Management L.P. | 722,451 | $30.6M | 0.17% | −20,242−2.7% | Reduced |
| Welch & Forbes LLC | 719,483 | $30.4M | 0.51% | −416−0.1% | Reduced |
| HSBC Holdings PLC | 708,129 | $30.0M | 0.04% | +270,916+62.0% | Added |
| First Republic Investment Management, Inc. | 669,499 | $28.3M | 0.07% | +3,688+0.6% | Added |
| Alliancebernstein L.P. | 577,860 | $24.5M | 0.01% | +96,343+20.0% | Added |
| UBS Group AG | 541,008 | $22.9M | 0.01% | +83,059+18.1% | Added |
| Price T Rowe Associates Inc | 530,731 | $22.5M | 0.00% | −12,090−2.2% | Reduced |
| Commerce Bank | 521,691 | $22.1M | 0.16% | −1970.0% | Reduced |
| California State Teachers Retirement System | 519,404 | $22.0M | 0.03% | −19,038−3.5% | Reduced |
| Rhumbline Advisers | 514,983 | $21.8M | 0.03% | −25,539−4.7% | Reduced |
| Envestnet Asset Management Inc | 509,419 | $21.6M | 0.01% | −9,021−1.7% | Reduced |
| AXA S.A. | 508,400 | $21.5M | 0.06% | −126,500−19.9% | Reduced |
| Ameriprise Financial Inc | 485,979 | $20.6M | 0.01% | −74,819−13.3% | Reduced |
| Handelsbanken Fonder AB | 483,508 | $20.5M | 0.11% | +414,436+600.0% | Added |
| Marble Harbor Investment Counsel, LLC | 474,841 | $20.1M | 2.59% | −4,651−1.0% | Reduced |
| Susquehanna Fundamental Investments, LLC | 431,477 | $18.3M | 0.33% | 00.0% | Unchanged |
| Bank of Montreal | 415,045 | $17.9M | 0.01% | +185,231+80.6% | Added |
| Prudential Financial Inc | 419,905 | $17.8M | 0.02% | −13,275−3.1% | Reduced |
| Avalon Investment & Advisory | 415,119 | $17.6M | 0.39% | −29,111−6.6% | Reduced |
| LPL Financial LLC | 398,712 | $16.9M | 0.02% | +20,696+5.5% | Added |
| United Bank | 391,700 | $16.6M | 2.23% | −4,452−1.1% | Reduced |
| Janus Henderson Group PLC | 385,201 | $16.3M | 0.01% | +277,012+256.0% | Added |
| PGGM Investments | 382,308 | $16.2M | 0.07% | +42,534+12.5% | Added |
| Renaissance Technologies LLC | 372,563 | $15.8M | 0.02% | +258,100+225.5% | Added |
| TD Asset Management Inc | 356,548 | $15.6M | 0.02% | −76,142−17.6% | Reduced |
| Principal Financial Group Inc | 364,153 | $15.4M | 0.01% | +7,013+2.0% | Added |
| Credit Suisse AG | 360,822 | $15.3M | 0.01% | −72,775−16.8% | Reduced |
| State Board of Administration of Florida Retirement System | 355,310 | $15.0M | 0.03% | −4,210−1.2% | Reduced |
| Nomura Asset Management Co Ltd | 352,777 | $14.9M | 0.09% | −3,094−0.9% | Reduced |
| Raymond James & Associates | 352,552 | $14.9M | 0.01% | −436,081−55.3% | Reduced |
| Millennium Management LLC | 347,236 | $14.7M | 0.02% | −185,229−34.8% | Reduced |
| SG Americas Securities, LLC | 345,325 | $14.6M | 0.08% | −18,593−5.1% | Reduced |
| New York State Teachers Retirement System | 334,262 | $14.1M | 0.03% | −43,344−11.5% | Reduced |
| New York State Common Retirement Fund | 328,318 | $13.9M | 0.01% | −9,982−3.0% | Reduced |
| STRS Ohio | 327,585 | $13.9M | 0.05% | −16,651−4.8% | Reduced |
| Hall Private Wealth Advisors | 326,310 | $13.8M | 8.99% | +326,310 | New |
| Adage Capital Partners GP, L.L.C. | 304,852 | $12.9M | 0.03% | −7,500−2.4% | Reduced |
| Retirement Systems of Alabama | 303,638 | $12.8M | 0.05% | −2,436−0.8% | Reduced |
| TCW Group Inc | 295,468 | $12.5M | 0.11% | +49,085+19.9% | Added |
| Royal Bank of Canada | 294,900 | $12.5M | 0.00% | +27,101+10.1% | Added |
| Robeco Institutional Asset Management B.V. | 293,875 | $12.4M | 0.03% | +48,330+19.7% | Added |
| Stifel Financial Corp | 288,799 | $12.2M | 0.02% | +34,620+13.6% | Added |
| Manufacturers Life Insurance Company, The | 287,069 | $12.1M | 0.01% | +867+0.3% | Added |
| Great West Life Assurance Co | 283,477 | $12.0M | 0.03% | +51,128+22.0% | Added |
| Swedbank AB | 281,658 | $11.9M | 0.02% | +16,428+6.2% | Added |
| Adell Harriman & Carpenter Inc | 277,270 | $11.7M | 1.24% | +6,695+2.5% | Added |
| Boston Common Asset Management, LLC | 275,074 | $11.6M | 0.50% | +18,663+7.3% | Added |
| Natixis | 274,855 | $11.6M | 0.05% | +93,734+51.8% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 274,793 | $11.6M | 0.07% | +2,498+0.9% | Added |
| Cubist Systematic Strategies, LLC | 274,192 | $11.6M | 0.13% | +268,243+4,509.0% | Added |
| United Capital Financial Advisers, LLC | 260,736 | $11.0M | 0.06% | −12,577−4.6% | Reduced |
| Blair William & Co | 255,219 | $10.8M | 0.04% | −14,831−5.5% | Reduced |
| Allianz Asset Management GmbH | 252,973 | $10.7M | 0.01% | +203,448+410.8% | Added |
| Tdam USA Inc. | 237,011 | $10.4M | 0.64% | −14,628−5.8% | Reduced |
| Pictet Asset Management Ltd | 242,822 | $10.3M | 0.01% | +107,076+78.9% | Added |
| BNP Paribas Arbitrage, SA | 239,029 | $10.1M | 0.02% | +174,884+272.6% | Added |
| Qube Research & Technologies Ltd | 238,813 | $10.1M | 0.13% | +238,813 | New |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 238,670 | $10.1M | 0.02% | +238,670 | New |
| Swiss Life Asset Management Ltd | 160,520 | $9.93M | 0.13% | −108,534−40.3% | Reduced |
| Storebrand Asset Management AS | 224,441 | $9.50M | 0.05% | −14,090−5.9% | Reduced |
| WealthTrust Axiom LLC | 216,834 | $9.18M | 2.95% | −792−0.4% | Reduced |
| Toronto Dominion Bank | 216,063 | $9.14M | 0.01% | +32,566+17.7% | Added |
| QS Investors, LLC | 214,023 | $9.06M | 0.11% | +47,840+28.8% | Added |
| Maplelane Capital, LLC | 212,453 | $8.99M | 0.70% | +212,453 | New |