Iron MountainIRM
13F holders, Q4 2024 (December 31)1,066holders +14
76new positions
107sold out
9famous investors
$105.12avg. 13F price*
At the end of Q4 2024, 1,066 institutions reported holding Iron Mountain Inc. (IRM) in their 13F filings, up 14 from Q3 2024. 76 opened new positions and 107 sold out. The largest holders were Vanguard Group Inc. ($4.9B), BlackRock, Inc. ($3.4B) and State Street Corp. ($1.8B). 9 famous investors held it, including Steve Cohen (0.4% of Point72 Asset Management's portfolio), Joel Greenblatt (0.1% of Gotham Asset Management's portfolio) and Ken Griffin (0.1% of Citadel Advisors's portfolio).
- Company
- Iron Mountain Inc.
- Filed as
- IRON MTN INC DEL (Q4 2024)
- Sector
- Real Estate
- CUSIP
- 46284V101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2024 → Q4 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 76 | $124.1M |
| Exits | 107 | $141.5M |
All 13F filers, Q3 2024 → Q4 2024: 11,738,929 shares bought and 17,308,245 shares sold, net −5,569,316 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,066 holders
| Vanguard Group Inc. | 0.09% | Add +0.0% | 46,605,170 | $4.9B |
| BlackRock, Inc. | 0.07% | Add +2.4% | 32,072,872 | $3.4B |
| State Street Corp. | 0.07% | Add +0.3% | 16,621,783 | $1.8B |
| Cohen & Steers, Inc. | 2.97% | Reduce -15.9% | 14,907,846 | $1.6B |
| Geode Capital Management, LLC | 0.06% | Reduce -4.2% | 7,912,109 | $832.9M |
| Northern Trust Corp. | 0.06% | Add +56.1% | 4,326,476 | $454.8M |
| Dimensional Fund Advisors LP | 0.11% | Add +0.4% | 4,219,263 | $443.5M |
| Capital World Investors | 0.06% | Reduce -7.3% | 3,817,417 | $401.2M |
| Charles Schwab Investment Management Inc. | 0.07% | Add +2.7% | 3,478,790 | $365.7M |
| Morgan Stanley | 0.03% | Reduce -7.0% | 3,386,215 | $355.9M |
| Norges Bank | 0.05% | Add +1.0% | 3,313,186 | $348.2M |
| Deutsche Bank AG | 0.13% | Reduce -6.4% | 3,253,738 | $342.0M |
| Legal & General Group Plc | 0.09% | Reduce -9.3% | 3,182,440 | $334.5M |
| Daiwa Securities Group Inc. | 1.40% | Reduce -5.7% | 2,947,121 | $309.8M |
| Nuveen Asset Management, LLC | 0.08% | Add +39.0% | 2,548,970 | $267.9M |
| Invesco Ltd. | 0.05% | Add +17.2% | 2,482,820 | $261.0M |
| Pictet Asset Management Holding SA | 0.26% | Add +0.1% | 2,329,022 | $244.8M |
| Agf Management Ltd. | 1.12% | Reduce -4.1% | 2,133,904 | $224.3M |
| Bank of New York Mellon Corp | 0.04% | Reduce -2.1% | 2,034,912 | $213.9M |
| TD Asset Management Inc | 0.18% | Add +125.4% | 1,952,432 | $205.2M |
| Russell Investments Group, Ltd. | 0.27% | Reduce -11.0% | 1,855,832 | $195.0M |
| JPMorgan Chase & Co. | 0.01% | Reduce -19.9% | 1,750,066 | $183.9M |
| Centersquare Investment Management LLC | 1.89% | Reduce -2.3% | 1,706,252 | $179.3M |
| Ameriprise Financial Inc. | 0.04% | Reduce -6.2% | 1,590,370 | $167.3M |
| Wellington Management Group LLP | 0.03% | Reduce -35.3% | 1,547,708 | $162.7M |
| Bank of America Corp. | 0.01% | Add +17.3% | 1,478,520 | $155.4M |
| Amundi | 0.05% | Reduce -11.4% | 1,438,801 | $148.0M |
| Prudential Financial Inc. | 0.20% | Reduce -15.2% | 1,363,213 | $143.3M |
| Duff & Phelps Investment Management Co. | 1.57% | Add +0.5% | 1,246,311 | $131.0M |
| Point72 Asset Management | 0.35% | Add +439.8% | 1,200,660 | $126.2M |
| DekaBank Deutsche Girozentrale | 0.21% | No change | 1,122,500 | $116.3M |
| PGGM Investments | 1.52% | Add +0.1% | 1,084,387 | $114.0M |
| Goldman Sachs Group Inc. | 0.02% | Reduce -18.8% | 1,061,207 | $111.5M |
| CIBC Private Wealth Group LLC | 0.19% | Reduce -0.9% | 1,016,176 | $104.5M |
| Sumitomo Mitsui Trust Group, Inc. | 0.06% | Add +1.1% | 910,723 | $95.7M |
| UBS Group AG | 0.02% | Reduce -14.9% | 903,264 | $94.9M |
| T. Rowe Price Associates Inc. | 0.01% | Add +7.0% | 877,238 | $92.2M |
| Sei Investments Co. | 0.11% | Reduce -7.5% | 848,367 | $89.2M |
| Swiss National Bank | 0.06% | Reduce -4.7% | 828,761 | $87.1M |
| Captrust Financial Advisors | 0.24% | Reduce -16.3% | 796,317 | $83.7M |
| Epoch Investment Partners, Inc. | 0.38% | Reduce -41.1% | 747,550 | $78.6M |
| HSBC Holdings PLC | 0.05% | Add +6.6% | 743,548 | $78.0M |
| Welch & Forbes LLC | 0.92% | Reduce -1.1% | 679,762 | $71.4M |
| Aew Capital Management L P | 3.45% | Add +55.6% | 678,887 | $71.4M |
| FMR LLC | 0.00% | Add +9.3% | 667,739 | $70.2M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.07% | Add +7.5% | 657,443 | $69.5M |
| Wells Fargo & Company | 0.02% | Reduce -5.6% | 660,778 | $69.5M |
| Rhumbline Advisers | 0.06% | Reduce -4.8% | 637,206 | $67.0M |
| Bank of Montreal | 0.03% | Reduce -1.3% | 630,709 | $66.3M |
| American Century Companies Inc. | 0.04% | Reduce -22.2% | 625,395 | $65.7M |
| Aberdeen Group plc | 0.12% | Add +0.6% | 630,036 | $65.4M |
| Citadel Advisors | 0.06% | Add +817.5% | 604,340 | $63.5M |
| LPL Financial LLC | 0.02% | Reduce -3.7% | 568,835 | $59.8M |
| Asset Management One Co., Ltd. | 0.20% | Reduce -1.4% | 562,541 | $58.9M |
| Alliancebernstein L.P. | 0.02% | Reduce -8.8% | 555,832 | $58.4M |
| CBRE Investment Management Listed Real Assets LLC | 1.01% | Add +158.3% | 541,028 | $56.9M |
| Raymond James Financial Inc. | 0.02% | — | 525,841 | $55.3M |
| Neuberger Berman Group LLC | 0.04% | Reduce -21.1% | 515,234 | $54.2M |
| APG Asset Management US Inc. | 0.41% | Add +7.1% | 514,208 | $54.0M |
| Royal Bank of Canada | 0.01% | Add +1.5% | 500,617 | $52.6M |
| BNP Paribas Financial Markets | 0.04% | Reduce -4.3% | 497,147 | $52.3M |
| California Public Employees Retirement System | 0.03% | Reduce -5.2% | 496,456 | $52.2M |
| Nomura Asset Management Co. Ltd. | 0.15% | Add +4.0% | 474,591 | $49.9M |
| Border to Coast Pensions Partnership Ltd | 0.95% | Reduce -3.2% | 460,000 | $48.3M |
| Cookson Peirce & Co. Inc. | 2.17% | Reduce -1.1% | 454,552 | $47.8M |
| Adelante Capital Management LLC | 3.09% | Add +12.3% | 445,897 | $46.9M |
| CANADA LIFE ASSURANCE Co | 0.08% | Add +3.6% | 435,397 | $45.7M |
| California State Teachers Retirement System | 0.05% | Reduce -7.6% | 434,493 | $45.7M |
| Aviva PLC | 0.12% | Reduce -1.9% | 429,473 | $45.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Reduce -86.6% | 426,223 | $44.8M |
| Intech Investment Management LLC | 0.43% | Add +100.0% | 420,200 | $44.2M |
| Principal Financial Group Inc. | 0.02% | Add +17.9% | 415,368 | $43.7M |
| Barclays PLC | 0.02% | Reduce -31.4% | 405,421 | $42.6M |
| National Pension Service | 0.04% | Reduce -12.3% | 402,813 | $42.3M |
| KBC Group NV | 0.12% | Add +31.7% | 402,261 | $42.3M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.08% | — | 377,576 | $39.7M |
| Eventide Asset Management, LLC | 0.72% | Add +8.7% | 373,863 | $39.3M |
| Balyasny Asset Management L.P. | 0.09% | Add +5098.0% | 366,668 | $38.5M |
| Marble Harbor Investment Counsel, LLC | 4.02% | Reduce -1.0% | 346,570 | $36.4M |
| Blair William & Co. | 0.10% | Add +0.2% | 334,522 | $35.2M |
| Adell Harriman & Carpenter Inc. | 2.41% | Add +0.4% | 329,829 | $34.7M |
| Rockefeller Capital Management L.P. | 0.09% | Reduce -46.1% | 312,873 | $32.9M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.08% | Reduce -4.7% | 294,679 | $31.0M |
| State Board of Administration of Florida Retirement System | 0.06% | Reduce -0.4% | 289,226 | $30.4M |
| Swedbank AB | 0.04% | Add +26.7% | 288,938 | $30.4M |
| Stifel Financial Corp. | 0.03% | Reduce -3.6% | 269,834 | $28.4M |
| New York State Teachers Retirement System | 0.06% | Reduce -3.3% | 252,631 | $26.6M |
| Macquarie Group Ltd. | 0.03% | Reduce -9.2% | 258,972 | $26.0M |
| Envestnet Asset Management Inc. | 0.01% | Reduce -46.1% | 245,463 | $25.8M |
| Waterfront Capital Partners, LLC | 4.67% | Reduce -1.1% | 237,847 | $25.0M |
| Schonfeld Strategic Advisors LLC | 0.16% | Add +1475.6% | 235,628 | $24.8M |
| Andra AP-fonden | 0.39% | Add +0.9% | 234,000 | $24.6M |
| Retirement Systems of Alabama | 0.09% | Add +0.1% | 233,176 | $24.5M |
| Ensign Peak Advisors, Inc | 0.04% | Add +3.5% | 232,200 | $24.4M |
| Regions Financial Corp. | 0.18% | Add +5.6% | 230,776 | $24.3M |
| Credit Agricole S A | 0.08% | Add +23.0% | 229,068 | $24.1M |
| Public Sector Pension Investment Board | 0.10% | Add +340.4% | 225,181 | $23.7M |
| Commonwealth Equity Services, LLC | 0.03% | Add +1.1% | 225,063 | $23.7M |
| Man Group plc | 0.07% | Add +287.7% | 220,738 | $23.2M |
| First Trust Advisors LP | 0.02% | Reduce -12.6% | 219,258 | $23.0M |
"% of holder's portfolio" is IRM's weight in each manager's 13F, not the share of Iron Mountain Inc. the manager owns.