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, Q3 2024
Institutional positions in Iron Mountain Inc as of Sep 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
- 1,056
- +100 vs. Q2 2024
- Shares held
- 242.6M
- +22.7M (+10.3%) vs. Q2 2024
- Total value
- $28.8B
- +$9.07B (+46.0%) vs. Q2 2024
- New holders
- 165
- 323 more added
- Sold out
- 65
- 416 more reduced
11 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2024
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Varma Mutual Pension Insurance Co | 110,638 | $13.7M | 0.11% | −6,600−5.6% | Reduced |
| Advisor Group Holdings, Inc. | 115,475 | $13.7M | 0.03% | −2,966−2.5% | Reduced |
| CIBC World Markets Corp | 117,334 | $13.9M | 0.10% | +79,544+210.5% | Added |
| Sheaff Brock Investment Advisors, LLC | 117,863 | $14.0M | 1.23% | −21,172−15.2% | Reduced |
| Vert Asset Management LLC | 119,937 | $14.3M | 4.91% | +2,273+1.9% | Added |
| Allspring Global Investments Holdings, LLC | 120,891 | $14.4M | 0.02% | −7,315−5.7% | Reduced |
| Franklin Resources Inc | 121,209 | $14.7M | 0.00% | −36,472−23.1% | Reduced |
| Sargent Investment Group, LLC | 127,610 | $15.2M | 2.72% | +1,250+1.0% | Added |
| IFM Investors Pty Ltd | 128,021 | $15.2M | 0.15% | −150−0.1% | Reduced |
| Nisa Investment Advisors, LLC | 128,343 | $15.4M | 0.09% | −13,493−9.5% | Reduced |
| Millennium Management LLC | 129,242 | $15.4M | 0.01% | +51,205+65.6% | Added |
| Sanctuary Advisors, LLC | 129,034 | $15.4M | 0.10% | +95,499+284.8% | Added |
| Royal London Asset Management Ltd | 129,845 | $15.4M | 0.04% | 00.0% | Unchanged |
| Ar Asset Management Inc | 130,600 | $15.5M | 3.45% | 00.0% | Unchanged |
| Treasurer of the State of North Carolina | 130,880 | $15.6M | 0.06% | +600+0.5% | Added |
| HighTower Advisors, LLC | 131,174 | $15.6M | 0.02% | +7,529+6.1% | Added |
| Mutual Advisors, LLC | 123,823 | $15.6M | 0.46% | +1,829+1.5% | Added |
| Danske Bank A/S | 138,256 | $16.4M | 0.05% | −800−0.6% | Reduced |
| Gillson Capital LP | 143,400 | $17.0M | 1.55% | +106,200+285.5% | Added |
| Cambridge Investment Research Advisors, Inc. | 145,699 | $17.3M | 0.06% | −5,635−3.7% | Reduced |
| Toronto Dominion Bank | 146,076 | $17.4M | 0.03% | +2,010+1.4% | Added |
| Railway Pension Investments Ltd | 147,900 | $17.6M | 0.21% | 00.0% | Unchanged |
| QRG Capital Management, Inc. | 149,407 | $17.8M | 0.19% | −25,374−14.5% | Reduced |
| Voya Investment Management LLC | 150,333 | $17.9M | 0.02% | −16,371−9.8% | Reduced |
| Trust Co of Virginia | 152,509 | $18.1M | 1.62% | −12,603−7.6% | Reduced |
| Susquehanna International Group, LLP | 153,126 | $18.2M | 0.03% | +34,862+29.5% | Added |
| Burney Co | 153,869 | $18.3M | 0.65% | −600.0% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 157,279 | $18.7M | 0.06% | −2,778−1.7% | Reduced |
| Pinebridge Investments, L.P. | 158,655 | $18.9M | 0.14% | −27,505−14.8% | Reduced |
| Bamco Inc | 159,114 | $18.9M | 0.05% | +159,114 | New |
| Storebrand Asset Management AS | 160,935 | $19.1M | 0.06% | +6,708+4.3% | Added |
| AQR Capital Management LLC | 163,702 | $19.1M | 0.03% | +113,464+225.9% | Added |
| Resona Asset Management Co.,Ltd. | 163,299 | $19.2M | 0.11% | −6,672−3.9% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 161,869 | $19.2M | 0.04% | +7,687+5.0% | Added |
| National Bank of Canada | 168,692 | $20.0M | 0.03% | +72,131+74.7% | Added |
| Nippon Life Global Investors Americas, Inc. | 168,230 | $20.1M | 0.86% | +22,630+15.5% | Added |
| Cetera Investment Advisers | 171,080 | $20.3M | 0.04% | −2,115−1.2% | Reduced |
| Dana Investment Advisors, Inc. | 171,116 | $20.3M | 0.67% | −25,085−12.8% | Reduced |
| Churchill Management Corp | 173,022 | $20.6M | 0.24% | −4,233−2.4% | Reduced |
| State of Alaska, Department of Revenue | 173,192 | $20.6M | 0.22% | +528+0.3% | Added |
| Adage Capital Partners GP, L.L.C. | 176,452 | $21.0M | 0.04% | −104,700−37.2% | Reduced |
| CIBC World Markets Inc. | 179,008 | $21.3M | 0.05% | +109,216+156.5% | Added |
| United Capital Financial Advisers, LLC | 180,754 | $21.5M | 0.18% | −5,094−2.7% | Reduced |
| Knights of Columbus Asset Advisors LLC | 181,354 | $21.6M | 1.43% | −59,781−24.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 184,786 | $22.0M | 0.07% | −149,795−44.8% | Reduced |
| Credit Agricole S A | 186,272 | $22.1M | 0.12% | +62,099+50.0% | Added |
| State of Wisconsin Investment Board | 186,755 | $22.2M | 0.06% | +18,520+11.0% | Added |
| Worldquant Millennium Advisors LLC | 193,747 | $23.0M | 0.17% | +189,380+4,336.6% | Added |
| Pacer Advisors, Inc. | 198,107 | $23.5M | 0.05% | −43,554−18.0% | Reduced |
| New York State Common Retirement Fund | 200,678 | $23.8M | 0.03% | −76,600−27.6% | Reduced |
| Natixis Advisors, L.P. | 201,574 | $24.0M | 0.05% | −9,402−4.5% | Reduced |
| Lord, Abbett & Co. LLC | 203,000 | $24.1M | 0.08% | +203,000 | New |
| Handelsbanken Fonder AB | 207,545 | $24.7M | 0.10% | +21,806+11.7% | Added |
| Raymond James Financial Services Advisors, Inc. | 207,961 | $24.7M | 0.03% | +16,175+8.4% | Added |
| Cbre Clarion Securities LLC | 209,492 | $24.9M | 0.40% | +209,492 | New |
| Manufacturers Life Insurance Company, The | 209,648 | $24.9M | 0.02% | +4,150+2.0% | Added |
| Intech Investment Management LLC | 210,155 | $25.0M | 0.28% | +62,441+42.3% | Added |
| Moran Wealth Management, LLC | 215,147 | $25.6M | 0.79% | −9,456−4.2% | Reduced |
| Regions Financial Corp | 218,461 | $26.0M | 0.19% | +218,461 | New |
| United Bank | 218,463 | $26.0M | 3.02% | −2,357−1.1% | Reduced |
| CI Private Wealth, LLC | 222,229 | $26.4M | 0.04% | −15,448−6.5% | Reduced |
| Point72 Asset Management, L.P. | 222,409 | $26.4M | 0.09% | +222,409 | New |
| Commonwealth Equity Services, LLC | 222,702 | $26.5M | 0.04% | −7,834−3.4% | Reduced |
| Ensign Peak Advisors, Inc | 224,441 | $26.7M | 0.05% | +755+0.3% | Added |
| Swedbank AB | 228,052 | $27.1M | 0.03% | −1,160−0.5% | Reduced |
| Andra AP-fonden | 231,900 | $27.6M | 0.41% | −400−0.2% | Reduced |
| Retirement Systems of Alabama | 233,044 | $27.7M | 0.10% | −1,270−0.5% | Reduced |
| Waterfront Capital Partners, LLC | 240,592 | $28.6M | 5.25% | −197,141−45.0% | Reduced |
| First Trust Advisors LP | 250,856 | $29.8M | 0.03% | +43,087+20.7% | Added |
| New York State Teachers Retirement System | 261,188 | $31.0M | 0.06% | −6,866−2.6% | Reduced |
| Citigroup Inc | 268,389 | $31.9M | 0.03% | +20,905+8.4% | Added |
| Twin Tree Management, LP | 274,438 | $32.6M | 0.76% | +274,438 | New |
| Stifel Financial Corp | 279,961 | $33.3M | 0.03% | −106,556−27.6% | Reduced |
| Macquarie Group Ltd | 285,069 | $33.9M | 0.04% | −15,689−5.2% | Reduced |
| State Board of Administration of Florida Retirement System | 290,306 | $34.5M | 0.07% | −18,540−6.0% | Reduced |
| KBC Group NV | 305,392 | $36.3M | 0.11% | +240,195+368.4% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 309,293 | $36.8M | 0.09% | −19,743−6.0% | Reduced |
| Adell Harriman & Carpenter Inc | 328,370 | $39.0M | 2.84% | −4,305−1.3% | Reduced |
| Blair William & Co | 333,944 | $39.7M | 0.12% | −14,202−4.1% | Reduced |
| Eventide Asset Management, LLC | 343,836 | $40.9M | 0.70% | +43,923+14.6% | Added |
| Raymond James & Associates | 348,747 | $41.4M | 0.03% | −5,335−1.5% | Reduced |
| Marble Harbor Investment Counsel, LLC | 350,001 | $41.6M | 4.55% | −88,959−20.3% | Reduced |
| Principal Financial Group Inc | 352,451 | $41.9M | 0.02% | +11,685+3.4% | Added |
| Adelante Capital Management LLC | 397,223 | $47.2M | 3.05% | +381,596+2,441.9% | Added |
| Great West Life Assurance Co | 420,257 | $50.0M | 0.09% | +14,101+3.5% | Added |
| Aew Capital Management L P | 436,397 | $51.9M | 2.23% | −152,503−25.9% | Reduced |
| Aviva PLC | 437,599 | $52.0M | 0.13% | −17,666−3.9% | Reduced |
| Envestnet Asset Management Inc | 455,603 | $54.1M | 0.02% | −46,849−9.3% | Reduced |
| Nomura Asset Management Co Ltd | 456,295 | $54.2M | 0.17% | +7,023+1.6% | Added |
| National Pension Service | 459,478 | $54.6M | 0.05% | +61,187+15.4% | Added |
| Cookson Peirce & Co Inc | 459,515 | $54.6M | 2.56% | −2,308−0.5% | Reduced |
| California State Teachers Retirement System | 470,341 | $55.9M | 0.07% | −5,005−1.1% | Reduced |
| Border to Coast Pensions Partnership Ltd | 475,000 | $56.3M | 1.15% | −90,000−15.9% | Reduced |
| APG Asset Management US Inc. | 480,000 | $56.8M | 0.38% | +80,000+20.0% | Added |
| Royal Bank of Canada | 493,303 | $58.6M | 0.01% | +155,461+46.0% | Added |
| BNP Paribas Arbitrage, SA | 519,264 | $61.7M | 0.06% | +269,844+108.2% | Added |
| California Public Employees Retirement System | 523,387 | $62.2M | 0.04% | −8,439−1.6% | Reduced |
| Acadian Asset Management LLC | 560,640 | $66.6M | 0.21% | +476,415+565.6% | Added |
| Asset Management One Co.,Ltd. | 570,237 | $67.8M | 0.24% | +3,571+0.6% | Added |
| Rockefeller Capital Management L.P. | 580,819 | $69.0M | 0.19% | −182,825−23.9% | Reduced |