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 8 sales; 1,173 institutions reported holding it in 13F filings for Q2 2026, worth $32.4B in total; no superinvestor holds it.
13F holders, Q1 2023
Institutional positions in Iron Mountain Inc as of Mar 31, 2023. 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
- 790
- +20 vs. Q4 2022
- Shares held
- 225.9M
- −2.74M (−1.2%) vs. Q4 2022
- Total value
- $12.0B
- +$601.6M (+5.3%) vs. Q4 2022
- New holders
- 74
- 302 more added
- Sold out
- 54
- 266 more reduced
12 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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, Q1 2023
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 47,666,664 | $2.52B | 0.06% | +236,740+0.5% | Added |
| Capital World Investors | 25,486,477 | $1.35B | 0.28% | +5,3060.0% | Added |
| BlackRock Inc. | 22,405,730 | $1.19B | 0.04% | −213,158−0.9% | Reduced |
| State Street Corp | 13,797,287 | $738.3M | 0.04% | −451,341−3.2% | Reduced |
| Geode Capital Management, LLC | 7,781,928 | $411.0M | 0.05% | +837,623+12.1% | Added |
| Morgan Stanley | 4,863,397 | $257.3M | 0.03% | −200,230−4.0% | Reduced |
| Deutsche Bank AG | 4,584,196 | $242.5M | 0.14% | +436,842+10.5% | Added |
| Dimensional Fund Advisors LP | 4,219,190 | $223.2M | 0.08% | +116,057+2.8% | Added |
| FMR LLC | 3,812,461 | $201.7M | 0.02% | +78,256+2.1% | Added |
| Northern Trust Corp | 3,794,177 | $200.7M | 0.04% | +57,881+1.5% | Added |
| Charles Schwab Investment Management Inc | 3,775,932 | $199.8M | 0.06% | +35,769+1.0% | Added |
| Pictet Asset Management SA | 3,330,034 | $176.2M | 0.22% | −279,289−7.7% | Reduced |
| Amundi | 3,184,635 | $167.1M | 0.09% | −544,106−14.6% | Reduced |
| Cohen & Steers, Inc. | 2,927,757 | $154.8M | 0.33% | +2,927,651+2,761,934.9% | Added |
| Epoch Investment Partners, Inc. | 2,885,370 | $152.7M | 0.91% | +260,980+9.9% | Added |
| Bank of New York Mellon Corp | 2,514,259 | $133.0M | 0.03% | −78,160−3.0% | Reduced |
| Invesco Ltd. | 2,214,226 | $117.2M | 0.03% | −1,937,062−46.7% | Reduced |
| Legal & General Group Plc | 2,111,943 | $111.7M | 0.04% | +62,247+3.0% | Added |
| Norges Bank | 2,077,067 | $109.9M | 0.02% | +116,136+5.9% | Added |
| JPMorgan Chase & Co | 1,818,101 | $96.2M | 0.01% | +3,181+0.2% | Added |
| Bank of America Corp | 1,520,421 | $80.4M | 0.01% | +569,660+59.9% | Added |
| CIBC Private Wealth Group, LLC | 1,190,748 | $79.4M | 0.23% | +2,726+0.2% | Added |
| Neuberger Berman Group LLC | 1,158,780 | $61.3M | 0.06% | +45,737+4.1% | Added |
| Swiss National Bank | 1,153,761 | $61.0M | 0.04% | −27,700−2.3% | Reduced |
| Intech Investment Management LLC | 1,068,141 | $56.5M | 0.46% | −238,068−18.2% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 1,064,393 | $56.3M | 0.04% | −395,926−27.1% | Reduced |
| Goldman Sachs Group Inc | 1,060,252 | $56.1M | 0.02% | +156,149+17.3% | Added |
| DekaBank Deutsche Girozentrale | 1,073,329 | $55.2M | 0.14% | +53,416+5.2% | Added |
| UBS Asset Management Americas Inc | 1,037,676 | $54.9M | 0.03% | +29,008+2.9% | Added |
| Agf Management Ltd | 1,004,177 | $53.1M | 0.36% | +60,628+6.4% | Added |
| Rockefeller Capital Management L.P. | 993,066 | $52.5M | 0.23% | +410,773+70.5% | Added |
| Russell Investments Group, Ltd. | 977,613 | $51.5M | 0.10% | +181,856+22.9% | Added |
| Nuveen Asset Management, LLC | 898,986 | $47.6M | 0.02% | +23,981+2.7% | Added |
| Canada Pension Plan Investment Board | 865,590 | $45.8M | 0.07% | +43,238+5.3% | Added |
| American Century Companies Inc | 858,707 | $45.4M | 0.04% | +23,740+2.8% | Added |
| First Republic Investment Management, Inc. | 773,914 | $40.9M | 0.09% | −11,843−1.5% | Reduced |
| Welch & Forbes LLC | 744,685 | $39.4M | 0.67% | −5,460−0.7% | Reduced |
| Wells Fargo & Company | 706,177 | $37.4M | 0.01% | +3,814+0.5% | Added |
| Ameriprise Financial Inc | 680,087 | $36.1M | 0.01% | +131,454+24.0% | Added |
| Asset Management One Co.,Ltd. | 670,545 | $35.5M | 0.16% | −23,139−3.3% | Reduced |
| Wellington Management Group LLP | 668,804 | $35.4M | 0.01% | −163,818−19.7% | Reduced |
| Rhumbline Advisers | 658,192 | $34.8M | 0.04% | +33,910+5.4% | Added |
| Pacer Advisors, Inc. | 650,151 | $34.4M | 0.15% | −87,319−11.8% | Reduced |
| Stifel Financial Corp | 607,411 | $32.1M | 0.05% | +10,303+1.7% | Added |
| Border to Coast Pensions Partnership Ltd | 606,040 | $32.1M | 0.86% | −100,000−14.2% | Reduced |
| UBS Group AG | 604,764 | $32.0M | 0.01% | −193,732−24.3% | Reduced |
| California Public Employees Retirement System | 599,979 | $31.7M | 0.03% | −85,705−12.5% | Reduced |
| Royal Bank of Canada | 596,218 | $31.5M | 0.01% | −30,515−4.9% | Reduced |
| Envestnet Asset Management Inc | 704,760 | $30.0M | 0.01% | +127,573+22.1% | Added |
| Bank of Montreal | 497,418 | $26.3M | 0.02% | −799,074−61.6% | Reduced |
| California State Teachers Retirement System | 486,489 | $25.7M | 0.04% | −4,774−1.0% | Reduced |
| Price T Rowe Associates Inc | 473,871 | $25.1M | 0.00% | +11,608+2.5% | Added |
| Marble Harbor Investment Counsel, LLC | 468,764 | $24.8M | 3.21% | −2,868−0.6% | Reduced |
| National Pension Service | 467,324 | $24.2M | 0.04% | −44,515−8.7% | Reduced |
| Prudential Financial Inc | 470,715 | $23.6M | 0.04% | +213,777+83.2% | Added |
| LPL Financial LLC | 430,637 | $22.8M | 0.02% | −1,535−0.4% | Reduced |
| Cookson Peirce & Co Inc | 415,858 | $22.0M | 1.41% | +3,849+0.9% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 415,708 | $22.0M | 0.04% | +144,715+53.4% | Added |
| Aviva PLC | 415,633 | $22.0M | 0.10% | +196,371+89.6% | Added |
| Alliancebernstein L.P. | 394,389 | $20.9M | 0.01% | −31,460−7.4% | Reduced |
| Nomura Asset Management Co Ltd | 392,804 | $20.8M | 0.11% | +4,821+1.2% | Added |
| Raymond James & Associates | 391,013 | $20.7M | 0.02% | −14,146−3.5% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 386,120 | $20.4M | 0.05% | +36,547+10.5% | Added |
| Credit Suisse AG | 386,060 | $20.4M | 0.02% | −33,057−7.9% | Reduced |
| Brookstone Capital Management | 362,337 | $19.3M | 0.38% | +46,106+14.6% | Added |
| TD Asset Management Inc | 359,648 | $19.0M | 0.02% | +15,931+4.6% | Added |
| Blair William & Co | 358,471 | $19.0M | 0.08% | −3,090−0.9% | Reduced |
| Principal Financial Group Inc | 357,407 | $18.9M | 0.01% | +1,651+0.5% | Added |
| Citigroup Inc | 354,664 | $18.8M | 0.03% | +100,699+39.7% | Added |
| Avalon Investment & Advisory | 351,747 | $18.6M | 0.51% | −6,810−1.9% | Reduced |
| Voya Investment Management LLC | 341,748 | $18.1M | 0.02% | −110,580−24.4% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 340,595 | $18.0M | 0.04% | −73,415−17.7% | Reduced |
| STRS Ohio | 329,096 | $17.4M | 0.08% | −60,168−15.5% | Reduced |
| Adell Harriman & Carpenter Inc | 324,876 | $17.2M | 1.85% | +4,490+1.4% | Added |
| Dana Investment Advisors, Inc. | 324,405 | $17.2M | 0.87% | −3,423−1.0% | Reduced |
| New York State Teachers Retirement System | 323,018 | $17.1M | 0.04% | −15,622−4.6% | Reduced |
| State Board of Administration of Florida Retirement System | 321,492 | $17.0M | 0.04% | 00.0% | Unchanged |
| Great West Life Assurance Co | 318,550 | $16.9M | 0.04% | +2,976+0.9% | Added |
| United Bank | 318,002 | $16.8M | 2.15% | −17,570−5.2% | Reduced |
| Barclays PLC | 317,976 | $16.8M | 0.02% | −615,578−65.9% | Reduced |
| HSBC Holdings PLC | 316,850 | $16.7M | 0.02% | −206,181−39.4% | Reduced |
| New York State Common Retirement Fund | 315,800 | $16.7M | 0.02% | −12,500−3.8% | Reduced |
| Allianz Asset Management GmbH | 312,299 | $16.5M | 0.03% | +3,774+1.2% | Added |
| SG Americas Securities, LLC | 309,289 | $16.4M | 0.22% | −123,415−28.5% | Reduced |
| First Trust Advisors LP | 293,903 | $15.6M | 0.02% | +63,715+27.7% | Added |
| Captrust Financial Advisors | 285,969 | $15.1M | 0.07% | +11,158+4.1% | Added |
| Swedbank AB | 268,974 | $14.2M | 0.03% | −3,663−1.3% | Reduced |
| Korea Investment CORP | 265,507 | $14.0M | 0.04% | +58,626+28.3% | Added |
| Retirement Systems of Alabama | 262,871 | $13.9M | 0.06% | −7,661−2.8% | Reduced |
| BNP Paribas Arbitrage, SA | 255,036 | $13.5M | 0.03% | +9,796+4.0% | Added |
| Crossmark Global Holdings, Inc. | 241,961 | $12.8M | 0.30% | +7,410+3.2% | Added |
| Raymond James Financial Services Advisors, Inc. | 239,402 | $12.7M | 0.02% | +20,057+9.1% | Added |
| Lazard Asset Management LLC | 235,667 | $12.5M | 0.02% | +225,661+2,255.3% | Added |
| United Capital Financial Advisers, LLC | 225,435 | $11.9M | 0.07% | −8,552−3.7% | Reduced |
| Cinctive Capital Management LP | 219,412 | $11.6M | 0.43% | −92,388−29.6% | Reduced |
| Guggenheim Capital LLC | 217,445 | $11.5M | 0.10% | +12,414+6.1% | Added |
| Citadel Advisors LLC | 214,537 | $11.4M | 0.01% | −216,776−50.3% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 211,670 | $11.2M | 0.03% | −32,065−13.2% | Reduced |
| Manufacturers Life Insurance Company, The | 211,193 | $11.2M | 0.01% | −1,636−0.8% | Reduced |
| Gilman Hill Asset Management, LLC | 207,434 | $11.0M | 2.23% | +1,579+0.8% | Added |