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 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 |
|---|---|---|---|---|---|
| Vanguard Group Inc | 46,643,352 | $4.18B | 0.08% | +266,118+0.6% | Added |
| BlackRock Inc. | 27,891,960 | $2.50B | 0.06% | +4,783,129+20.7% | Added |
| Cohen & Steers, Inc. | 23,051,016 | $2.07B | 4.33% | −604,022−2.6% | Reduced |
| State Street Corp | 17,516,178 | $1.58B | 0.07% | +3,704,370+26.8% | Added |
| Geode Capital Management, LLC | 8,129,343 | $728.9M | 0.06% | +808,857+11.0% | Added |
| Daiwa Securities Group Inc. | 4,517,699 | $404.9M | 2.15% | −44,466−1.0% | Reduced |
| Dimensional Fund Advisors LP | 4,286,068 | $384.1M | 0.10% | −5250.0% | Reduced |
| Capital World Investors | 4,116,146 | $368.9M | 0.06% | +230.0% | Added |
| Deutsche Bank AG | 3,923,723 | $351.6M | 0.16% | +71,576+1.9% | Added |
| Morgan Stanley | 3,655,486 | $327.6M | 0.03% | +197,051+5.7% | Added |
| Legal & General Group Plc | 3,453,291 | $309.5M | 0.09% | +1,289,876+59.6% | Added |
| Wellington Management Group LLP | 3,379,577 | $302.9M | 0.05% | +731,123+27.6% | Added |
| FMR LLC | 3,293,020 | $295.1M | 0.02% | +324,598+10.9% | Added |
| Charles Schwab Investment Management Inc | 3,244,640 | $290.8M | 0.06% | +19,479+0.6% | Added |
| Norges Bank | 3,238,615 | $290.2M | 0.04% | −99,986−3.0% | Reduced |
| Northern Trust Corp | 2,968,422 | $266.0M | 0.04% | +52,798+1.8% | Added |
| Pictet Asset Management Holding SA | 2,712,745 | $243.1M | 0.28% | −375,888−12.2% | Reduced |
| Centersquare Investment Management LLC | 2,409,602 | $215.9M | 2.34% | +871,116+56.6% | Added |
| Amundi | 2,250,829 | $206.6M | 0.08% | −726,505−24.4% | Reduced |
| Invesco Ltd. | 2,257,536 | $202.3M | 0.04% | +247,043+12.3% | Added |
| Agf Management Ltd | 2,245,393 | $201.2M | 1.12% | +972,101+76.3% | Added |
| Russell Investments Group, Ltd. | 2,178,969 | $195.2M | 0.31% | +171,980+8.6% | Added |
| JPMorgan Chase & Co | 2,135,256 | $191.4M | 0.02% | −319,820−13.0% | Reduced |
| Bank of New York Mellon Corp | 2,126,237 | $190.6M | 0.04% | +6,562+0.3% | Added |
| Prudential Financial Inc | 2,102,156 | $188.4M | 0.28% | +239,214+12.8% | Added |
| Nuveen Asset Management, LLC | 1,680,899 | $150.9M | 0.04% | +90,662+5.7% | Added |
| Goldman Sachs Group Inc | 1,615,304 | $144.8M | 0.03% | +794,991+96.9% | Added |
| Epoch Investment Partners, Inc. | 1,579,482 | $141.6M | 0.65% | −106,736−6.3% | Reduced |
| Ameriprise Financial Inc | 1,409,491 | $127.2M | 0.03% | −62,455−4.2% | Reduced |
| Bank of America Corp | 1,312,594 | $117.6M | 0.01% | −8,632−0.7% | Reduced |
| Duff & Phelps Investment Management Co | 1,298,330 | $116.4M | 1.48% | +402,625+45.0% | Added |
| DekaBank Deutsche Girozentrale | 1,182,515 | $105.3M | 0.19% | +56,503+5.0% | Added |
| SEI Investments Co | 1,125,491 | $100.9M | 0.14% | +181,763+19.3% | Added |
| CIBC Private Wealth Group, LLC | 1,049,216 | $97.4M | 0.18% | −7,591−0.7% | Reduced |
| Captrust Financial Advisors | 904,225 | $81.0M | 0.26% | +47,280+5.5% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 903,856 | $81.0M | 0.06% | −52,333−5.5% | Reduced |
| Swiss National Bank | 867,761 | $77.8M | 0.05% | −6,700−0.8% | Reduced |
| American Century Companies Inc | 828,630 | $74.3M | 0.05% | +44,574+5.7% | Added |
| Heitman Real Estate Securities LLC | 765,561 | $68.6M | 4.34% | −173,772−18.5% | Reduced |
| Rockefeller Capital Management L.P. | 763,644 | $68.4M | 0.19% | +101,427+15.3% | Added |
| Voloridge Investment Management, LLC | 747,947 | $67.0M | 0.25% | +61,176+8.9% | Added |
| Welch & Forbes LLC | 711,885 | $66.0M | 0.88% | −15,756−2.2% | Reduced |
| Canada Pension Plan Investment Board | 731,515 | $65.6M | 0.06% | −165,475−18.4% | Reduced |
| HSBC Holdings PLC | 705,792 | $63.3M | 0.04% | +118,410+20.2% | Added |
| Wells Fargo & Company | 685,599 | $61.4M | 0.02% | −31,701−4.4% | Reduced |
| Rhumbline Advisers | 672,308 | $60.3M | 0.06% | +34,773+5.5% | Added |
| Neuberger Berman Group LLC | 652,768 | $58.5M | 0.05% | −33,599−4.9% | Reduced |
| UBS Group AG | 648,092 | $58.1M | 0.02% | −352,805−35.2% | Reduced |
| Barclays PLC | 636,961 | $57.1M | 0.03% | +50,057+8.5% | Added |
| Price T Rowe Associates Inc | 632,826 | $56.7M | 0.01% | +40,053+6.8% | Added |
| Alliancebernstein L.P. | 614,846 | $55.1M | 0.02% | +239,561+63.8% | Added |
| Bank of Montreal | 620,509 | $55.0M | 0.03% | +40,328+7.0% | Added |
| Aew Capital Management L P | 588,900 | $52.8M | 2.55% | +456,780+345.7% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 577,034 | $51.7M | 0.06% | +61,774+12.0% | Added |
| Asset Management One Co.,Ltd. | 566,666 | $50.8M | 0.19% | −13,536−2.3% | Reduced |
| Border to Coast Pensions Partnership Ltd | 565,000 | $50.7M | 1.20% | +3,960+0.7% | Added |
| Korea Investment CORP | 561,770 | $50.3M | 0.13% | +472,463+529.0% | Added |
| California Public Employees Retirement System | 531,826 | $47.7M | 0.03% | −8,561−1.6% | Reduced |
| Envestnet Asset Management Inc | 502,452 | $45.0M | 0.02% | −16,895−3.3% | Reduced |
| LPL Financial LLC | 501,499 | $44.9M | 0.02% | +43,498+9.5% | Added |
| UBS Asset Management Americas Inc | 497,729 | $44.6M | 0.01% | −1,044,438−67.7% | Reduced |
| California State Teachers Retirement System | 475,346 | $42.6M | 0.05% | +7,373+1.6% | Added |
| Cookson Peirce & Co Inc | 461,823 | $41.4M | 1.99% | +63,824+16.0% | Added |
| Aviva PLC | 455,265 | $40.8M | 0.11% | +116,619+34.4% | Added |
| Nomura Asset Management Co Ltd | 449,272 | $40.3M | 0.14% | +24,490+5.8% | Added |
| Jane Street Group, LLC | 448,135 | $40.2M | 0.04% | +248,662+124.7% | Added |
| Marble Harbor Investment Counsel, LLC | 438,960 | $39.3M | 4.63% | −7,121−1.6% | Reduced |
| Waterfront Capital Partners, LLC | 437,733 | $39.2M | 5.04% | +182,733+71.7% | Added |
| Great West Life Assurance Co | 406,156 | $36.4M | 0.07% | +44,022+12.2% | Added |
| APG Asset Management US Inc. | 400,000 | $35.9M | 0.21% | +400,000 | New |
| National Pension Service | 398,291 | $35.7M | 0.04% | −18,837−4.5% | Reduced |
| Stifel Financial Corp | 386,517 | $34.6M | 0.04% | −75,227−16.3% | Reduced |
| Raymond James & Associates | 354,082 | $31.7M | 0.02% | +5,284+1.5% | Added |
| Blair William & Co | 348,146 | $31.2M | 0.10% | −1,265−0.4% | Reduced |
| Principal Financial Group Inc | 340,766 | $30.5M | 0.02% | −6,498−1.9% | Reduced |
| Royal Bank of Canada | 337,842 | $30.3M | 0.01% | −3,715−1.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 334,581 | $30.0M | 0.10% | +217,617+186.1% | Added |
| Standard Life Aberdeen plc | 332,855 | $29.8M | 0.06% | +99,515+42.6% | Added |
| Adell Harriman & Carpenter Inc | 332,675 | $29.8M | 2.30% | +5,117+1.6% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 329,036 | $29.5M | 0.08% | −79,032−19.4% | Reduced |
| State Board of Administration of Florida Retirement System | 308,846 | $27.7M | 0.05% | −12,646−3.9% | Reduced |
| Macquarie Group Ltd | 300,758 | $27.0M | 0.03% | +125,080+71.2% | Added |
| Eventide Asset Management, LLC | 299,913 | $26.9M | 0.46% | +52,211+21.1% | Added |
| Adage Capital Partners GP, L.L.C. | 281,152 | $25.2M | 0.05% | −5,200−1.8% | Reduced |
| New York State Common Retirement Fund | 277,278 | $24.8M | 0.03% | +5,157+1.9% | Added |
| TD Asset Management Inc | 271,365 | $24.3M | 0.02% | −8,510−3.0% | Reduced |
| New York State Teachers Retirement System | 268,054 | $24.0M | 0.05% | −19,545−6.8% | Reduced |
| BNP Paribas Arbitrage, SA | 249,420 | $22.4M | 0.02% | −147,616−37.2% | Reduced |
| Citigroup Inc | 247,484 | $22.2M | 0.02% | +11,386+4.8% | Added |
| Pacer Advisors, Inc. | 241,661 | $21.7M | 0.05% | −51,252−17.5% | Reduced |
| Knights of Columbus Asset Advisors LLC | 241,135 | $21.6M | 1.41% | +65,234+37.1% | Added |
| CI Private Wealth, LLC | 237,677 | $21.3M | 0.04% | −9,040−3.7% | Reduced |
| Retirement Systems of Alabama | 234,314 | $21.0M | 0.08% | −7,102−2.9% | Reduced |
| Andra AP-fonden | 232,300 | $20.8M | 0.35% | −62,674−21.2% | Reduced |
| Commonwealth Equity Services, LLC | 230,536 | $20.7M | 0.03% | +17,362+8.1% | Added |
| Swedbank AB | 229,212 | $20.5M | 0.03% | −13,213−5.5% | Reduced |
| Moran Wealth Management, LLC | 224,603 | $20.1M | 0.66% | +224,603 | New |
| Ensign Peak Advisors, Inc | 223,686 | $20.0M | 0.04% | +30,293+15.7% | Added |
| United Bank | 220,820 | $19.8M | 2.46% | −25,669−10.4% | Reduced |
| Natixis Advisors, L.P. | 210,976 | $18.9M | 0.04% | +44,228+26.5% | Added |