Iron MountainIRM
13F holders, Q3 2024 (September 30)1,052holders +87
148new positions
65sold out
7famous investors
$118.85avg. 13F price*
At the end of Q3 2024, 1,052 institutions reported holding Iron Mountain Inc. (IRM) in their 13F filings, up 87 from Q2 2024. 148 opened new positions and 65 sold out. The largest holders were Vanguard Group Inc. ($5.5B), BlackRock, Inc. ($3.7B) and Cohen & Steers, Inc. ($2.1B). 7 famous investors held it, including Paul Tudor Jones (0.1% of Tudor Investment Corporation's portfolio), Joel Greenblatt (0.1% of Gotham Asset Management's portfolio) and Steve Cohen (0.1% of Point72 Asset Management's portfolio).
- Company
- Iron Mountain Inc.
- Filed as
- IRON MTN INC DEL (Q3 2024)
- Sector
- Real Estate
- CUSIP
- 46284V101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2024 → Q3 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 148 | $275.9M |
| Exits | 65 | $35.7M |
All 13F filers, Q2 2024 → Q3 2024: 12,577,733 shares bought and 21,941,664 shares sold, net −9,363,931 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,052 holders
| Vanguard Group Inc. | 0.10% | Reduce -0.1% | 46,603,838 | $5.5B |
| BlackRock, Inc. | 0.08% | — | 31,309,637 | $3.7B |
| Cohen & Steers, Inc. | 3.75% | Reduce -23.1% | 17,726,012 | $2.1B |
| State Street Corp. | 0.08% | Reduce -5.4% | 16,567,777 | $2.0B |
| Geode Capital Management, LLC | 0.08% | Add +1.6% | 8,257,965 | $978.5M |
| Dimensional Fund Advisors LP | 0.12% | Reduce -1.9% | 4,204,166 | $499.6M |
| Capital World Investors | 0.08% | Reduce 0.0% | 4,115,969 | $489.1M |
| Morgan Stanley | 0.03% | Reduce -0.4% | 3,640,914 | $432.6M |
| Legal & General Group Plc | 0.11% | Add +1.6% | 3,509,980 | $417.1M |
| Deutsche Bank AG | 0.17% | Reduce -11.4% | 3,477,450 | $413.2M |
| Charles Schwab Investment Management Inc. | 0.08% | Add +4.4% | 3,386,315 | $402.4M |
| Norges Bank | 0.05% | Add +1.3% | 3,279,993 | $389.8M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.10% | Add +537.0% | 3,170,550 | $376.8M |
| Daiwa Securities Group Inc. | 1.73% | Reduce -30.8% | 3,126,559 | $371.5M |
| Northern Trust Corp. | 0.05% | Reduce -6.6% | 2,771,730 | $329.4M |
| Wellington Management Group LLP | 0.05% | Reduce -29.2% | 2,393,628 | $284.4M |
| Pictet Asset Management Holding SA | 0.30% | Reduce -14.2% | 2,326,860 | $276.4M |
| Agf Management Ltd. | 1.35% | Reduce -0.9% | 2,224,856 | $264.4M |
| JPMorgan Chase & Co. | 0.02% | Add +2.4% | 2,185,870 | $259.7M |
| Invesco Ltd. | 0.05% | Reduce -6.1% | 2,119,037 | $251.8M |
| Russell Investments Group, Ltd. | 0.36% | Reduce -4.3% | 2,084,580 | $247.3M |
| Bank of New York Mellon Corp | 0.05% | Reduce -2.3% | 2,078,400 | $247.0M |
| Nuveen Asset Management, LLC | 0.06% | Add +9.1% | 1,833,946 | $218.4M |
| Centersquare Investment Management LLC | 1.95% | Reduce -27.5% | 1,747,219 | $207.6M |
| Ameriprise Financial Inc. | 0.05% | Add +20.3% | 1,695,898 | $204.3M |
| Amundi | 0.07% | Reduce -27.9% | 1,623,697 | $193.0M |
| Prudential Financial Inc. | 0.27% | Reduce -23.5% | 1,608,149 | $191.1M |
| Goldman Sachs Group Inc. | 0.03% | Reduce -19.1% | 1,307,203 | $155.3M |
| Epoch Investment Partners, Inc. | 0.68% | Reduce -19.7% | 1,268,923 | $150.8M |
| Bank of America Corp. | 0.01% | Reduce -4.0% | 1,260,728 | $149.8M |
| Duff & Phelps Investment Management Co. | 1.69% | Reduce -4.5% | 1,240,606 | $147.4M |
| DekaBank Deutsche Girozentrale | 0.24% | Reduce -5.1% | 1,122,500 | $131.6M |
| PGGM Investments | 1.65% | Add +3204.4% | 1,083,653 | $128.8M |
| Canada Pension Plan Investment Board | 0.12% | Add +46.1% | 1,069,110 | $127.0M |
| UBS Group AG | 0.04% | Add +63.7% | 1,061,134 | $126.1M |
| CIBC Private Wealth Group LLC | 0.22% | Reduce -2.3% | 1,024,943 | $121.8M |
| Captrust Financial Advisors | 0.34% | Add +5.2% | 951,552 | $113.1M |
| Sei Investments Co. | 0.14% | Reduce -18.6% | 916,623 | $108.9M |
| Sumitomo Mitsui Trust Group, Inc. | 0.07% | Reduce -0.4% | 900,563 | $107.0M |
| Swiss National Bank | 0.07% | Add +0.3% | 869,961 | $103.4M |
| TD Asset Management Inc | 0.09% | Add +219.2% | 866,124 | $101.1M |
| T. Rowe Price Associates Inc. | 0.01% | Add +29.6% | 820,134 | $97.5M |
| American Century Companies Inc. | 0.06% | Reduce -3.0% | 803,674 | $95.5M |
| Wells Fargo & Company | 0.02% | Add +2.1% | 700,037 | $83.2M |
| HSBC Holdings PLC | 0.05% | Reduce -1.2% | 697,488 | $82.8M |
| Welch & Forbes LLC | 1.04% | Reduce -3.4% | 687,469 | $81.7M |
| Rhumbline Advisers | 0.07% | Reduce -0.4% | 669,476 | $79.6M |
| Neuberger Berman Group LLC | 0.06% | Reduce -0.0% | 652,616 | $77.6M |
| Bank of Montreal | 0.04% | Add +3.0% | 638,985 | $74.6M |
| Aberdeen Group plc | 0.14% | Add +88.2% | 626,280 | $73.8M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.08% | Add +6.0% | 611,874 | $72.7M |
| FMR LLC | 0.00% | Reduce -81.4% | 611,049 | $72.6M |
| Heitman Real Estate Securities LLC | 3.95% | Reduce -20.3% | 610,200 | $72.5M |
| Alliancebernstein L.P. | 0.02% | Reduce -0.9% | 609,232 | $72.4M |
| Barclays PLC | 0.03% | Reduce -7.2% | 591,302 | $70.3M |
| LPL Financial LLC | 0.03% | Add +17.8% | 590,630 | $70.2M |
| Rockefeller Capital Management L.P. | 0.19% | Reduce -23.9% | 580,819 | $69.0M |
| Asset Management One Co., Ltd. | 0.24% | Add +0.6% | 570,237 | $67.8M |
| Acadian Asset Management LLC | 0.21% | Add +565.6% | 560,640 | $66.6M |
| California Public Employees Retirement System | 0.04% | Reduce -1.6% | 523,387 | $62.2M |
| BNP Paribas Financial Markets | 0.06% | Add +108.2% | 519,264 | $61.7M |
| Royal Bank of Canada | 0.01% | Add +46.0% | 493,303 | $58.6M |
| APG Asset Management US Inc. | 0.38% | Add +20.0% | 480,000 | $56.8M |
| Border to Coast Pensions Partnership Ltd | 1.15% | Reduce -15.9% | 475,000 | $56.3M |
| California State Teachers Retirement System | 0.07% | Reduce -1.1% | 470,341 | $55.9M |
| Cookson Peirce & Co. Inc. | 2.56% | Reduce -0.5% | 459,515 | $54.6M |
| National Pension Service | 0.05% | Add +15.4% | 459,478 | $54.6M |
| Nomura Asset Management Co. Ltd. | 0.17% | Add +1.6% | 456,295 | $54.2M |
| Envestnet Asset Management Inc. | 0.02% | Reduce -9.3% | 455,603 | $54.1M |
| Aviva PLC | 0.14% | Reduce -3.9% | 437,599 | $52.0M |
| Aew Capital Management L P | 2.23% | Reduce -25.9% | 436,397 | $51.9M |
| CANADA LIFE ASSURANCE Co | 0.09% | Add +3.5% | 420,257 | $50.0M |
| Adelante Capital Management LLC | 3.05% | Add +2441.9% | 397,223 | $47.2M |
| Principal Financial Group Inc. | 0.02% | Add +3.4% | 352,451 | $41.9M |
| Marble Harbor Investment Counsel, LLC | 4.55% | Reduce -20.3% | 350,001 | $41.6M |
| Raymond James & Associates | 0.03% | Reduce -1.5% | 348,747 | $41.4M |
| Eventide Asset Management, LLC | 0.70% | Add +14.7% | 343,836 | $40.9M |
| Blair William & Co. | 0.12% | Reduce -4.1% | 333,944 | $39.7M |
| Adell Harriman & Carpenter Inc. | 2.84% | Reduce -1.3% | 328,370 | $39.0M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.09% | Reduce -6.0% | 309,293 | $36.8M |
| KBC Group NV | 0.11% | Add +368.4% | 305,392 | $36.3M |
| State Board of Administration of Florida Retirement System | 0.07% | Reduce -6.0% | 290,306 | $34.5M |
| Macquarie Group Ltd. | 0.04% | Reduce -5.2% | 285,069 | $33.9M |
| Stifel Financial Corp. | 0.03% | Reduce -27.6% | 279,961 | $33.3M |
| Twin Tree Management, LP | 0.76% | New | 274,438 | $32.6M |
| Citigroup Inc. | 0.03% | Add +8.4% | 268,389 | $31.9M |
| New York State Teachers Retirement System | 0.06% | Reduce -2.6% | 261,188 | $31.0M |
| First Trust Advisors LP | 0.03% | Add +20.7% | 250,856 | $29.8M |
| Waterfront Capital Partners, LLC | 5.25% | Reduce -45.0% | 240,592 | $28.6M |
| Retirement Systems of Alabama | 0.10% | Reduce -0.5% | 233,044 | $27.7M |
| Andra AP-fonden | 0.41% | Reduce -0.2% | 231,900 | $27.6M |
| Swedbank AB | 0.03% | Reduce -0.5% | 228,052 | $27.1M |
| Ensign Peak Advisors, Inc | 0.05% | Add +0.3% | 224,441 | $26.7M |
| Commonwealth Equity Services, LLC | 0.04% | Reduce -3.4% | 222,702 | $26.5M |
| Point72 Asset Management | 0.09% | New | 222,409 | $26.4M |
| Corient Private Wealth LP | 0.04% | Reduce -6.5% | 222,229 | $26.4M |
| United Bank | 3.02% | Reduce -1.1% | 218,463 | $26.0M |
| Regions Financial Corp. | 0.19% | New | 218,461 | $26.0M |
| Moran Wealth Management, LLC | 0.79% | Reduce -4.2% | 215,147 | $25.6M |
| Intech Investment Management LLC | 0.28% | Add +42.3% | 210,155 | $25.0M |
"% of holder's portfolio" is IRM's weight in each manager's 13F, not the share of Iron Mountain Inc. the manager owns.