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 2021
Institutional positions in Iron Mountain Inc as of Sep 30, 2021. 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
- 711
- +31 vs. Q2 2021
- Shares held
- 228.6M
- +133.0K (+0.1%) vs. Q2 2021
- Total value
- $9.94B
- +$260.5M (+2.7%) vs. Q2 2021
- New holders
- 73
- 282 more added
- Sold out
- 42
- 244 more reduced
7 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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 2021
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sheaff Brock Investment Advisors, LLC | 184,731 | $8.03M | 0.78% | −2,481−1.3% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 186,088 | $8.09M | 0.02% | +2,439+1.3% | Added |
| Toronto Dominion Bank | 188,520 | $8.19M | 0.01% | −27,543−12.7% | Reduced |
| SEI Investments Co | 189,059 | $8.24M | 0.02% | +99,516+111.1% | Added |
| Gilman Hill Asset Management, LLC | 190,801 | $8.29M | 2.12% | −782−0.4% | Reduced |
| State of Alaska, Department of Revenue | 192,732 | $8.37M | 0.08% | +27,279+16.5% | Added |
| Voya Investment Management LLC | 193,079 | $8.39M | 0.02% | +38,376+24.8% | Added |
| Vancity Investment Management Ltd | 196,192 | $8.53M | 1.09% | −923−0.5% | Reduced |
| Advisor Group Holdings, Inc. | 197,560 | $8.59M | 0.02% | +21,297+12.1% | Added |
| Crossmark Global Holdings, Inc. | 197,829 | $8.60M | 0.20% | +180,974+1,073.7% | Added |
| American National Insurance Co | 201,350 | $8.75M | 0.33% | −190−0.1% | Reduced |
| Moody National Bank Trust Division | 201,520 | $8.76M | 0.13% | −233−0.1% | Reduced |
| Andra AP-fonden | 206,200 | $8.96M | 0.18% | +12,300+6.3% | Added |
| WealthTrust Axiom LLC | 207,506 | $9.02M | 3.05% | −9,328−4.3% | Reduced |
| Korea Investment CORP | 212,100 | $9.22M | 0.03% | +107,900+103.6% | Added |
| SG Americas Securities, LLC | 214,355 | $9.31M | 0.05% | −130,970−37.9% | Reduced |
| Storebrand Asset Management AS | 217,266 | $9.44M | 0.05% | −7,175−3.2% | Reduced |
| Tdam USA Inc. | 230,478 | $10.0M | 0.66% | −6,533−2.8% | Reduced |
| TCW Group Inc | 231,364 | $10.1M | 0.09% | −64,104−21.7% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 234,348 | $10.2M | 0.05% | +22,632+10.7% | Added |
| Commonwealth Equity Services, LLC | 236,997 | $10.3M | 0.03% | +43,777+22.7% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 238,670 | $10.4M | 0.02% | 00.0% | Unchanged |
| Pictet Asset Management SA | 239,896 | $10.4M | 0.01% | +239,896 | New |
| Canada Pension Plan Investment Board | 246,613 | $10.7M | 0.01% | +241,891+5,122.6% | Added |
| Royal Bank of Canada | 250,737 | $10.9M | 0.00% | −44,163−15.0% | Reduced |
| Prudential Financial Inc | 245,945 | $10.9M | 0.02% | −173,960−41.4% | Reduced |
| Commerce Bank | 253,221 | $11.0M | 0.08% | −268,470−51.5% | Reduced |
| Nisa Investment Advisors, LLC | 253,790 | $11.0M | 0.07% | +55,890+28.2% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 254,993 | $11.1M | 0.06% | −19,800−7.2% | Reduced |
| United Capital Financial Advisers, LLC | 257,284 | $11.2M | 0.06% | −3,452−1.3% | Reduced |
| Hall Private Wealth Advisors | 260,198 | $11.3M | 7.21% | −66,112−20.3% | Reduced |
| Manufacturers Life Insurance Company, The | 261,178 | $11.3M | 0.01% | −25,891−9.0% | Reduced |
| Blair William & Co | 264,208 | $11.5M | 0.04% | +8,989+3.5% | Added |
| Adell Harriman & Carpenter Inc | 277,545 | $12.1M | 1.26% | +275+0.1% | Added |
| Boston Common Asset Management, LLC | 277,674 | $12.1M | 0.52% | +2,600+0.9% | Added |
| Swedbank AB | 285,100 | $12.4M | 0.02% | +3,442+1.2% | Added |
| Zimmer Partners, LP | 287,500 | $12.5M | 0.20% | +175,000+155.6% | Added |
| First Trust Advisors LP | 291,075 | $12.6M | 0.01% | +165,117+131.1% | Added |
| Great West Life Assurance Co | 292,672 | $12.8M | 0.03% | +9,195+3.2% | Added |
| Retirement Systems of Alabama | 296,322 | $12.9M | 0.05% | −7,316−2.4% | Reduced |
| Adage Capital Partners GP, L.L.C. | 300,352 | $13.1M | 0.03% | −4,500−1.5% | Reduced |
| Robeco Institutional Asset Management B.V. | 313,411 | $13.6M | 0.03% | +19,536+6.6% | Added |
| Nomura Asset Management Co Ltd | 324,016 | $14.1M | 0.08% | −28,761−8.2% | Reduced |
| Credit Suisse AG | 329,997 | $14.3M | 0.01% | −30,825−8.5% | Reduced |
| New York State Common Retirement Fund | 343,200 | $14.9M | 0.02% | +14,882+4.5% | Added |
| State Board of Administration of Florida Retirement System | 350,114 | $15.2M | 0.03% | −5,196−1.5% | Reduced |
| TD Asset Management Inc | 350,516 | $15.2M | 0.02% | −6,032−1.7% | Reduced |
| New York State Teachers Retirement System | 359,833 | $15.6M | 0.03% | +25,571+7.6% | Added |
| STRS Ohio | 363,125 | $15.8M | 0.06% | +35,540+10.8% | Added |
| Principal Financial Group Inc | 370,899 | $16.1M | 0.01% | +6,746+1.9% | Added |
| United Bank | 381,464 | $16.6M | 2.22% | −10,236−2.6% | Reduced |
| Raymond James & Associates | 382,286 | $16.6M | 0.01% | +29,734+8.4% | Added |
| Stifel Financial Corp | 384,830 | $16.7M | 0.02% | +96,031+33.3% | Added |
| Avalon Investment & Advisory | 385,294 | $16.7M | 0.39% | −29,825−7.2% | Reduced |
| Susquehanna Fundamental Investments, LLC | 385,716 | $16.8M | 0.31% | −45,761−10.6% | Reduced |
| PGGM Investments | 387,973 | $16.9M | 0.09% | +5,665+1.5% | Added |
| LPL Financial LLC | 408,260 | $17.7M | 0.02% | +9,548+2.4% | Added |
| HSBC Holdings PLC | 429,173 | $18.8M | 0.02% | −278,956−39.4% | Reduced |
| Allianz Asset Management GmbH | 474,809 | $20.6M | 0.02% | +221,836+87.7% | Added |
| Marble Harbor Investment Counsel, LLC | 474,921 | $20.6M | 2.78% | +800.0% | Added |
| Bank of Montreal | 470,499 | $20.9M | 0.01% | +55,454+13.4% | Added |
| Citigroup Inc | 482,604 | $21.0M | 0.02% | −257,597−34.8% | Reduced |
| Handelsbanken Fonder AB | 496,786 | $21.6M | 0.11% | +13,278+2.7% | Added |
| California State Teachers Retirement System | 509,591 | $22.1M | 0.03% | −9,813−1.9% | Reduced |
| Envestnet Asset Management Inc | 514,395 | $22.4M | 0.01% | +4,976+1.0% | Added |
| Rhumbline Advisers | 519,472 | $22.6M | 0.03% | +4,489+0.9% | Added |
| Price T Rowe Associates Inc | 522,828 | $22.7M | 0.00% | −7,903−1.5% | Reduced |
| Alliancebernstein L.P. | 539,700 | $23.4M | 0.01% | −38,160−6.6% | Reduced |
| AXA S.A. | 551,800 | $24.0M | 0.07% | +43,400+8.5% | Added |
| Ameriprise Financial Inc | 569,192 | $24.8M | 0.01% | +83,213+17.1% | Added |
| UBS Group AG | 631,436 | $27.4M | 0.01% | +90,428+16.7% | Added |
| American Century Companies Inc | 642,979 | $27.9M | 0.02% | −151,215−19.0% | Reduced |
| California Public Employees Retirement System | 672,259 | $29.2M | 0.02% | −1,581,932−70.2% | Reduced |
| Asset Management One Co.,Ltd. | 702,389 | $30.5M | 0.12% | −75,640−9.7% | Reduced |
| Welch & Forbes LLC | 722,326 | $31.4M | 0.52% | +2,843+0.4% | Added |
| First Republic Investment Management, Inc. | 730,400 | $31.7M | 0.08% | +60,901+9.1% | Added |
| Rockefeller Capital Management L.P. | 744,175 | $32.3M | 0.17% | +21,724+3.0% | Added |
| Goldman Sachs Group Inc | 864,502 | $37.6M | 0.01% | +94,664+12.3% | Added |
| Bank of America Corp | 915,598 | $39.8M | 0.00% | +110,196+13.7% | Added |
| Janus Henderson Group PLC | 959,069 | $41.7M | 0.02% | +573,868+149.0% | Added |
| Barclays PLC | 993,080 | $43.1M | 0.03% | +155,028+18.5% | Added |
| Nordea Investment Management AB | 982,431 | $43.7M | 0.06% | +50,538+5.4% | Added |
| Nuveen Asset Management, LLC | 1,038,172 | $45.1M | 0.01% | −165,492−13.7% | Reduced |
| Parametric Portfolio Associates LLC | 1,043,163 | $45.3M | 0.03% | −5,924−0.6% | Reduced |
| Wells Fargo & Company | 1,061,146 | $46.1M | 0.01% | −166,537−13.6% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,137,086 | $49.4M | 0.13% | −18,504−1.6% | Reduced |
| Swiss National Bank | 1,144,447 | $49.7M | 0.03% | −34,600−2.9% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,153,112 | $50.1M | 0.03% | −47,993−4.0% | Reduced |
| UBS Asset Management Americas Inc | 1,218,576 | $52.9M | 0.02% | −199,932−14.1% | Reduced |
| Pacer Advisors, Inc. | 1,552,850 | $67.5M | 0.86% | +365,854+30.8% | Added |
| Legal & General Group Plc | 1,919,441 | $83.4M | 0.03% | +37,371+2.0% | Added |
| Deutsche Bank AG | 1,960,601 | $85.2M | 0.04% | −94,251−4.6% | Reduced |
| JPMorgan Chase & Co | 2,382,906 | $103.5M | 0.01% | −150,410−5.9% | Reduced |
| Norges Bank | 2,616,436 | $113.7M | 0.03% | +41,884+1.6% | Added |
| LSV Asset Management | 2,686,994 | $116.7M | 0.21% | +349,858+15.0% | Added |
| Amundi | 2,725,513 | $118.4M | 0.08% | +25,464+0.9% | Added |
| Bank of New York Mellon Corp | 3,216,489 | $139.8M | 0.03% | −26,750−0.8% | Reduced |
| Charles Schwab Investment Management Inc | 3,413,868 | $148.3M | 0.05% | +107,354+3.2% | Added |
| Epoch Investment Partners, Inc. | 3,559,169 | $154.6M | 0.86% | −185,970−5.0% | Reduced |
| FMR LLC | 4,156,502 | $180.6M | 0.01% | −17,356−0.4% | Reduced |