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 2024
Institutional positions in Iron Mountain Inc as of Jun 30, 2024. 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
- 967
- +42 vs. Q1 2024
- Shares held
- 248.0M
- +11.4M (+4.8%) vs. Q1 2024
- Total value
- $22.2B
- +$3.28B (+17.3%) vs. Q1 2024
- New holders
- 105
- 327 more added
- Sold out
- 63
- 374 more reduced
13 institutions that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2024: 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 2024
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Marble Harbor Investment Counsel, LLC | 438,960 | $39.3M | 4.63% | −7,121−1.6% | Reduced |
| Jane Street Group, LLC | 448,135 | $40.2M | 0.04% | +248,662+124.7% | Added |
| Nomura Asset Management Co Ltd | 449,272 | $40.3M | 0.14% | +24,490+5.8% | Added |
| Aviva PLC | 455,265 | $40.8M | 0.11% | +116,619+34.4% | Added |
| Cookson Peirce & Co Inc | 461,823 | $41.4M | 1.99% | +63,824+16.0% | Added |
| California State Teachers Retirement System | 475,346 | $42.6M | 0.05% | +7,373+1.6% | Added |
| UBS Asset Management Americas Inc | 497,729 | $44.6M | 0.01% | −1,044,438−67.7% | Reduced |
| LPL Financial LLC | 501,499 | $44.9M | 0.02% | +43,498+9.5% | Added |
| Envestnet Asset Management Inc | 502,452 | $45.0M | 0.02% | −16,895−3.3% | Reduced |
| California Public Employees Retirement System | 531,826 | $47.7M | 0.03% | −8,561−1.6% | Reduced |
| Korea Investment CORP | 561,770 | $50.3M | 0.13% | +472,463+529.0% | Added |
| Border to Coast Pensions Partnership Ltd | 565,000 | $50.7M | 1.20% | +3,960+0.7% | Added |
| Asset Management One Co.,Ltd. | 566,666 | $50.8M | 0.19% | −13,536−2.3% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 577,034 | $51.7M | 0.06% | +61,774+12.0% | Added |
| Aew Capital Management L P | 588,900 | $52.8M | 2.55% | +456,780+345.7% | Added |
| Bank of Montreal | 620,509 | $55.0M | 0.03% | +40,328+7.0% | Added |
| Alliancebernstein L.P. | 614,846 | $55.1M | 0.02% | +239,561+63.8% | Added |
| Price T Rowe Associates Inc | 632,826 | $56.7M | 0.01% | +40,053+6.8% | Added |
| Barclays PLC | 636,961 | $57.1M | 0.03% | +50,057+8.5% | Added |
| UBS Group AG | 648,092 | $58.1M | 0.02% | −352,805−35.2% | Reduced |
| Neuberger Berman Group LLC | 652,768 | $58.5M | 0.05% | −33,599−4.9% | Reduced |
| Rhumbline Advisers | 672,308 | $60.3M | 0.06% | +34,773+5.5% | Added |
| Wells Fargo & Company | 685,599 | $61.4M | 0.02% | −31,701−4.4% | Reduced |
| HSBC Holdings PLC | 705,792 | $63.3M | 0.04% | +118,410+20.2% | Added |
| Canada Pension Plan Investment Board | 731,515 | $65.6M | 0.06% | −165,475−18.4% | Reduced |
| Welch & Forbes LLC | 711,885 | $66.0M | 0.88% | −15,756−2.2% | Reduced |
| Voloridge Investment Management, LLC | 747,947 | $67.0M | 0.25% | +61,176+8.9% | Added |
| Rockefeller Capital Management L.P. | 763,644 | $68.4M | 0.19% | +101,427+15.3% | Added |
| Heitman Real Estate Securities LLC | 765,561 | $68.6M | 4.34% | −173,772−18.5% | Reduced |
| American Century Companies Inc | 828,630 | $74.3M | 0.05% | +44,574+5.7% | Added |
| Swiss National Bank | 867,761 | $77.8M | 0.05% | −6,700−0.8% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 903,856 | $81.0M | 0.06% | −52,333−5.5% | Reduced |
| Captrust Financial Advisors | 904,225 | $81.0M | 0.26% | +47,280+5.5% | Added |
| CIBC Private Wealth Group, LLC | 1,049,216 | $97.4M | 0.18% | −7,591−0.7% | Reduced |
| SEI Investments Co | 1,125,491 | $100.9M | 0.14% | +181,763+19.3% | Added |
| DekaBank Deutsche Girozentrale | 1,182,515 | $105.3M | 0.19% | +56,503+5.0% | Added |
| Duff & Phelps Investment Management Co | 1,298,330 | $116.4M | 1.48% | +402,625+45.0% | Added |
| Bank of America Corp | 1,312,594 | $117.6M | 0.01% | −8,632−0.7% | Reduced |
| Ameriprise Financial Inc | 1,409,491 | $127.2M | 0.03% | −62,455−4.2% | Reduced |
| Epoch Investment Partners, Inc. | 1,579,482 | $141.6M | 0.65% | −106,736−6.3% | Reduced |
| Goldman Sachs Group Inc | 1,615,304 | $144.8M | 0.03% | +794,991+96.9% | Added |
| Nuveen Asset Management, LLC | 1,680,899 | $150.9M | 0.04% | +90,662+5.7% | Added |
| Prudential Financial Inc | 2,102,156 | $188.4M | 0.28% | +239,214+12.8% | Added |
| Bank of New York Mellon Corp | 2,126,237 | $190.6M | 0.04% | +6,562+0.3% | Added |
| JPMorgan Chase & Co | 2,135,256 | $191.4M | 0.02% | −319,820−13.0% | Reduced |
| Russell Investments Group, Ltd. | 2,178,969 | $195.2M | 0.31% | +171,980+8.6% | Added |
| Agf Management Ltd | 2,245,393 | $201.2M | 1.12% | +972,101+76.3% | Added |
| Invesco Ltd. | 2,257,536 | $202.3M | 0.04% | +247,043+12.3% | Added |
| Amundi | 2,250,829 | $206.6M | 0.08% | −726,505−24.4% | Reduced |
| Centersquare Investment Management LLC | 2,409,602 | $215.9M | 2.34% | +871,116+56.6% | Added |
| Pictet Asset Management Holding SA | 2,712,745 | $243.1M | 0.28% | −375,888−12.2% | Reduced |
| Northern Trust Corp | 2,968,422 | $266.0M | 0.04% | +52,798+1.8% | Added |
| Norges Bank | 3,238,615 | $290.2M | 0.04% | −99,986−3.0% | Reduced |
| Charles Schwab Investment Management Inc | 3,244,640 | $290.8M | 0.06% | +19,479+0.6% | Added |
| FMR LLC | 3,293,020 | $295.1M | 0.02% | +324,598+10.9% | Added |
| Wellington Management Group LLP | 3,379,577 | $302.9M | 0.05% | +731,123+27.6% | Added |
| Legal & General Group Plc | 3,453,291 | $309.5M | 0.09% | +1,289,876+59.6% | Added |
| Morgan Stanley | 3,655,486 | $327.6M | 0.03% | +197,051+5.7% | Added |
| Deutsche Bank AG | 3,923,723 | $351.6M | 0.16% | +71,576+1.9% | Added |
| Capital World Investors | 4,116,146 | $368.9M | 0.06% | +230.0% | Added |
| Dimensional Fund Advisors LP | 4,286,068 | $384.1M | 0.10% | −5250.0% | Reduced |
| Daiwa Securities Group Inc. | 4,517,699 | $404.9M | 2.15% | −44,466−1.0% | Reduced |
| Geode Capital Management, LLC | 8,129,343 | $728.9M | 0.06% | +808,857+11.0% | Added |
| State Street Corp | 17,516,178 | $1.58B | 0.07% | +3,704,370+26.8% | Added |
| Cohen & Steers, Inc. | 23,051,016 | $2.07B | 4.33% | −604,022−2.6% | Reduced |
| BlackRock Inc. | 27,891,960 | $2.50B | 0.06% | +4,783,129+20.7% | Added |
| Vanguard Group Inc | 46,643,352 | $4.18B | 0.08% | +266,118+0.6% | Added |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −1,271,739−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −833,604−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −183,185−100.0% | Sold out |
| Mason & Associates, LLC | 0 | $0 | 0.00% | −95,114−100.0% | Sold out |
| American International Group, Inc. | 0 | $0 | 0.00% | −78,997−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −70,388−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −60,791−100.0% | Sold out |
| Texas Permanent School Fund | 0 | $0 | 0.00% | −60,281−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −45,856−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −35,604−100.0% | Sold out |
| Summit Partners Public Asset Management, LLC | 0 | $0 | 0.00% | −35,000−100.0% | Sold out |
| DoubleLine ETF Adviser LP | 0 | $0 | 0.00% | −22,428−100.0% | Sold out |
| Metropolitan Life Insurance Co | 0 | $0 | 0.00% | −20,792−100.0% | Sold out |
| Lincoln National Corp | 0 | $0 | 0.00% | −16,961−100.0% | Sold out |
| Childress Capital Advisors, LLC | 0 | $0 | 0.00% | −13,020−100.0% | Sold out |
| Tompkins Financial Corp | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| Hunter Associates Investment Management LLC | 0 | $0 | 0.00% | −10,700−100.0% | Sold out |
| Savoie Capital LLC | 0 | $0 | 0.00% | −10,545−100.0% | Sold out |
| Hartline Investment Corp | 0 | $0 | 0.00% | −9,544−100.0% | Sold out |
| Norris Financial Group, LLC | 0 | $0 | 0.00% | −7,736−100.0% | Sold out |
| Accuvest Global Advisors | 0 | $0 | 0.00% | −6,473−100.0% | Sold out |
| BancorpSouth Bank | 0 | $0 | 0.00% | −5,318−100.0% | Sold out |
| Choate Investment Advisors | 0 | $0 | 0.00% | −5,107−100.0% | Sold out |
| Private Portfolio Partners LLC | 0 | $0 | 0.00% | −5,030−100.0% | Sold out |
| Advisors Preferred, LLC | 0 | $0 | 0.00% | −4,951−100.0% | Sold out |
| Jackson Creek Investment Advisors LLC | 0 | $0 | 0.00% | −4,617−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −4,210−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −4,200−100.0% | Sold out |
| Catalyst Funds Management Pty Ltd | 0 | $0 | 0.00% | −4,200−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −3,892−100.0% | Sold out |
| Duality Advisers, LP | 0 | $0 | 0.00% | −3,611−100.0% | Sold out |
| GTS Securities LLC | 0 | $0 | 0.00% | −3,421−100.0% | Sold out |
| BTC Capital Management, Inc. | 0 | $0 | 0.00% | −3,403−100.0% | Sold out |