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, Q4 2021
Institutional positions in Iron Mountain Inc as of Dec 31, 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
- 754
- +53 vs. Q3 2021
- Shares held
- 228.4M
- −36.3K (0.0%) vs. Q3 2021
- Total value
- $12.0B
- +$2.01B (+20.3%) vs. Q3 2021
- New holders
- 126
- 265 more added
- Sold out
- 73
- 243 more reduced
10 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2021
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Royal London Asset Management Ltd | 97,179 | $5.09M | 0.02% | −2,363−2.4% | Reduced |
| Foresight Capital Management Advisors, Inc. | 97,365 | $5.09M | 4.96% | +97,365 | New |
| Evergreen Capital Management LLC | 97,494 | $5.10M | 0.20% | +2,932+3.1% | Added |
| Pensionfund DSM Netherlands | 99,500 | $5.21M | 0.60% | 00.0% | Unchanged |
| WBI Investments | 103,173 | $5.26M | 0.84% | −2,465−2.3% | Reduced |
| Baker Ellis Asset Management LLC | 104,983 | $5.49M | 0.97% | +1,297+1.3% | Added |
| Westpac Banking Corp | 105,101 | $5.50M | 0.06% | +34,579+49.0% | Added |
| Amalgamated Bank | 105,845 | $5.54M | 0.04% | −8,623−7.5% | Reduced |
| NN Investment Partners Holdings N.V. | 107,170 | $5.61M | 0.03% | +23,111+27.5% | Added |
| ProShare Advisors LLC | 107,559 | $5.63M | 0.01% | +18,283+20.5% | Added |
| Treasurer of the State of North Carolina | 107,832 | $5.64M | 0.03% | +410+0.4% | Added |
| Daiwa Securities Group Inc. | 109,235 | $5.72M | 0.03% | +7,696+7.6% | Added |
| Woodstock Corp | 109,819 | $5.75M | 0.60% | −2,000−1.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 112,548 | $5.89M | 0.03% | −65,303−36.7% | Reduced |
| Avantax Advisory Services, Inc. | 112,760 | $5.90M | 0.09% | +6,727+6.3% | Added |
| American Trust Investment Advisors, LLC | 113,571 | $5.94M | 2.96% | +370+0.3% | Added |
| Truist Financial Corp | 117,057 | $6.13M | 0.01% | −14,929−11.3% | Reduced |
| Natixis Advisors, L.P. | 117,344 | $6.14M | 0.02% | +7,190+6.5% | Added |
| Ensign Peak Advisors, Inc | 119,878 | $6.27M | 0.01% | +83,672+231.1% | Added |
| Neuberger Berman Group LLC | 129,890 | $6.53M | 0.01% | −25,478−16.4% | Reduced |
| Brookstone Capital Management | 139,899 | $6.55M | 0.11% | −2,065−1.5% | Reduced |
| Berger Financial Group, Inc | 125,235 | $6.55M | 0.87% | +691+0.6% | Added |
| Andra AP-fonden | 129,600 | $6.78M | 0.14% | −76,600−37.1% | Reduced |
| Ar Asset Management Inc | 131,600 | $6.89M | 1.75% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 136,045 | $7.12M | 0.01% | −2,271−1.6% | Reduced |
| Forsta Ap-Fonden | 137,400 | $7.19M | 0.07% | +22,900+20.0% | Added |
| Nisa Investment Advisors, LLC | 158,721 | $7.29M | 0.05% | −95,069−37.5% | Reduced |
| Janney Montgomery Scott LLC | 149,584 | $7.83M | 0.03% | +5,963+4.2% | Added |
| CIBC World Markets Corp | 155,069 | $8.12M | 0.04% | −29,339−15.9% | Reduced |
| Greystone Financial Group, LLC | 155,396 | $8.13M | 1.95% | +29,778+23.7% | Added |
| Snowden Capital Advisors LLC | 158,435 | $8.29M | 0.42% | +177+0.1% | Added |
| State of New Jersey Common Pension Fund D | 159,127 | $8.33M | 0.02% | −6,602−4.0% | Reduced |
| Trust Co of Virginia | 160,268 | $8.39M | 0.84% | +1,210+0.8% | Added |
| Standard Life Aberdeen plc | 160,941 | $8.42M | 0.02% | −11,988−6.9% | Reduced |
| Atalanta Sosnoff Capital, LLC | 164,265 | $8.60M | 0.19% | +389+0.2% | Added |
| Public Employees Retirement System of Ohio | 165,052 | $8.64M | 0.03% | −5,030−3.0% | Reduced |
| Mutual Advisors, LLC | 169,261 | $8.86M | 0.47% | +5,330+3.3% | Added |
| Sargent Investment Group, LLC | 170,475 | $8.92M | 2.03% | +6,400+3.9% | Added |
| Swiss Life Asset Management Ltd | 173,430 | $9.08M | 0.12% | −1,109−0.6% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 173,649 | $9.09M | 0.03% | −4,078−2.3% | Reduced |
| Advisor Group Holdings, Inc. | 173,928 | $9.10M | 0.02% | −23,632−12.0% | Reduced |
| SEI Investments Co | 173,287 | $9.12M | 0.02% | −15,772−8.3% | Reduced |
| Guggenheim Capital LLC | 175,036 | $9.16M | 0.05% | +7,352+4.4% | Added |
| Pictet Asset Management SA | 186,005 | $9.73M | 0.01% | −53,891−22.5% | Reduced |
| State of Alaska, Department of Revenue | 188,464 | $9.86M | 0.10% | −4,268−2.2% | Reduced |
| Canada Pension Plan Investment Board | 188,818 | $9.88M | 0.01% | −57,795−23.4% | Reduced |
| Sheaff Brock Investment Advisors, LLC | 189,631 | $9.92M | 0.86% | +4,900+2.7% | Added |
| WealthTrust Axiom LLC | 194,448 | $10.2M | 3.25% | −13,058−6.3% | Reduced |
| Gilman Hill Asset Management, LLC | 196,438 | $10.3M | 2.29% | +5,637+3.0% | Added |
| Vancity Investment Management Ltd | 202,361 | $10.6M | 1.22% | +6,169+3.1% | Added |
| Toronto Dominion Bank | 203,907 | $10.7M | 0.01% | +15,387+8.2% | Added |
| Tdam USA Inc. | 204,882 | $10.7M | 0.67% | −25,596−11.1% | Reduced |
| Millennium Management LLC | 206,924 | $10.8M | 0.01% | +29,090+16.4% | Added |
| Dai-Ichi Life Insurance Company, Ltd | 209,805 | $11.0M | 0.14% | +80,000+61.6% | Added |
| Commonwealth Equity Services, LLC | 210,888 | $11.0M | 0.02% | −26,109−11.0% | Reduced |
| Storebrand Asset Management AS | 212,486 | $11.1M | 0.05% | −4,780−2.2% | Reduced |
| Crossmark Global Holdings, Inc. | 219,535 | $11.5M | 0.25% | +21,706+11.0% | Added |
| Prudential Financial Inc | 250,667 | $12.1M | 0.02% | +4,722+1.9% | Added |
| Robeco Institutional Asset Management B.V. | 237,806 | $12.4M | 0.03% | −75,605−24.1% | Reduced |
| TCW Group Inc | 243,985 | $12.8M | 0.11% | +12,621+5.5% | Added |
| Hall Private Wealth Advisors | 247,561 | $13.0M | 8.05% | −12,637−4.9% | Reduced |
| Allspring Global Investments Holdings, LLC | 247,706 | $13.0M | 0.01% | +247,706 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 253,130 | $13.0M | 0.05% | +18,782+8.0% | Added |
| Manufacturers Life Insurance Company, The | 253,130 | $13.2M | 0.01% | −8,048−3.1% | Reduced |
| Commerce Bank | 254,054 | $13.3M | 0.09% | +833+0.3% | Added |
| Natixis | 258,818 | $13.5M | 0.05% | +152,831+144.2% | Added |
| Raymond James Financial Services Advisors, Inc. | 267,390 | $14.0M | 0.03% | +109,660+69.5% | Added |
| United Capital Financial Advisers, LLC | 268,348 | $14.0M | 0.06% | +11,064+4.3% | Added |
| Blair William & Co | 270,398 | $14.2M | 0.04% | +6,190+2.3% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 271,792 | $14.2M | 0.03% | +85,704+46.1% | Added |
| BNP Paribas Arbitrage, SA | 283,045 | $14.8M | 0.04% | +141,390+99.8% | Added |
| Adell Harriman & Carpenter Inc | 286,060 | $15.0M | 1.39% | +8,515+3.1% | Added |
| Swedbank AB | 285,493 | $15.0M | 0.03% | +393+0.1% | Added |
| Retirement Systems of Alabama | 292,038 | $15.3M | 0.05% | −4,284−1.4% | Reduced |
| Great West Life Assurance Co | 300,057 | $15.7M | 0.03% | +7,385+2.5% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 303,242 | $15.9M | 0.02% | +64,572+27.1% | Added |
| TD Asset Management Inc | 306,213 | $16.0M | 0.01% | −44,303−12.6% | Reduced |
| Adage Capital Partners GP, L.L.C. | 308,552 | $16.1M | 0.03% | +8,200+2.7% | Added |
| Avalon Investment & Advisory | 319,801 | $16.7M | 0.41% | −65,493−17.0% | Reduced |
| HSBC Holdings PLC | 326,641 | $17.1M | 0.02% | −102,532−23.9% | Reduced |
| Susquehanna Fundamental Investments, LLC | 327,990 | $17.2M | 0.45% | −57,726−15.0% | Reduced |
| Boston Common Asset Management, LLC | 328,712 | $17.2M | 0.69% | +51,038+18.4% | Added |
| Credit Suisse AG | 329,040 | $17.2M | 0.01% | −957−0.3% | Reduced |
| New York State Teachers Retirement System | 337,378 | $17.7M | 0.03% | −22,455−6.2% | Reduced |
| Citigroup Inc | 345,317 | $18.1M | 0.02% | −137,287−28.4% | Reduced |
| Nomura Asset Management Co Ltd | 345,454 | $18.1M | 0.09% | +21,438+6.6% | Added |
| New York State Common Retirement Fund | 347,151 | $18.2M | 0.02% | +3,951+1.2% | Added |
| First Trust Advisors LP | 348,767 | $18.3M | 0.02% | +57,692+19.8% | Added |
| AustralianSuper Pty Ltd | 361,287 | $18.3M | 0.10% | +361,287 | New |
| State Board of Administration of Florida Retirement System | 350,625 | $18.3M | 0.03% | +511+0.1% | Added |
| STRS Ohio | 354,379 | $18.5M | 0.06% | −8,746−2.4% | Reduced |
| Renaissance Technologies LLC | 357,563 | $18.7M | 0.02% | +184,200+106.3% | Added |
| Principal Financial Group Inc | 363,328 | $19.0M | 0.01% | −7,571−2.0% | Reduced |
| United Bank | 374,073 | $19.6M | 2.41% | −7,391−1.9% | Reduced |
| Cookson Peirce & Co Inc | 379,897 | $19.9M | 1.11% | +379,897 | New |
| Voya Investment Management LLC | 382,793 | $20.0M | 0.04% | +189,714+98.3% | Added |
| Korea Investment CORP | 383,100 | $20.0M | 0.05% | +171,000+80.6% | Added |
| PGGM Investments | 386,721 | $20.2M | 0.10% | −1,252−0.3% | Reduced |
| LPL Financial LLC | 400,321 | $20.9M | 0.02% | −7,939−1.9% | Reduced |
| Bank of Montreal | 412,775 | $21.8M | 0.01% | −57,724−12.3% | Reduced |