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 2023
Institutional positions in Iron Mountain Inc as of Sep 30, 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
- 831
- +22 vs. Q2 2023
- Shares held
- 229.7M
- +6.17M (+2.8%) vs. Q2 2023
- Total value
- $13.7B
- +$977.9M (+7.7%) vs. Q2 2023
- New holders
- 88
- 289 more added
- Sold out
- 66
- 315 more reduced
8 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2023: 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 2023
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| QRG Capital Management, Inc. | 146,719 | $8.72M | 0.15% | +146,719 | New |
| Voya Investment Management LLC | 147,516 | $8.77M | 0.01% | −43,911−22.9% | Reduced |
| Ensign Peak Advisors, Inc | 148,493 | $8.83M | 0.02% | −14,198−8.7% | Reduced |
| Nisa Investment Advisors, LLC | 152,869 | $9.09M | 0.07% | +5,635+3.8% | Added |
| Sargent Investment Group, LLC | 154,725 | $9.20M | 2.22% | −9,365−5.7% | Reduced |
| Intech Investment Management LLC | 154,760 | $9.20M | 0.14% | −452,050−74.5% | Reduced |
| UniSuper Management Pty Ltd | 155,970 | $9.27M | 0.11% | 00.0% | Unchanged |
| State of New Jersey Common Pension Fund D | 156,870 | $9.33M | 0.03% | −7,009−4.3% | Reduced |
| Natixis Advisors, L.P. | 158,076 | $9.40M | 0.03% | +22,816+16.9% | Added |
| HighTower Advisors, LLC | 159,030 | $9.45M | 0.02% | +92,924+140.6% | Added |
| Chevy Chase Trust Holdings, Inc. | 164,050 | $9.75M | 0.04% | −3,715−2.2% | Reduced |
| Janney Montgomery Scott LLC | 166,011 | $9.87M | 0.04% | −2,116−1.3% | Reduced |
| Standard Life Aberdeen plc | 169,404 | $10.1M | 0.03% | +4,058+2.5% | Added |
| Sheaff Brock Investment Advisors, LLC | 170,602 | $10.1M | 1.02% | −2,950−1.7% | Reduced |
| Storebrand Asset Management AS | 171,276 | $10.2M | 0.05% | −12,299−6.7% | Reduced |
| Trust Co of Virginia | 172,322 | $10.2M | 1.13% | −378−0.2% | Reduced |
| State of Alaska, Department of Revenue | 173,326 | $10.3M | 0.13% | +398+0.2% | Added |
| D. E. Shaw & Co., Inc. | 174,524 | $10.4M | 0.02% | +28,460+19.5% | Added |
| Susquehanna International Group, LLP | 180,136 | $10.7M | 0.02% | +17,498+10.8% | Added |
| Advisor Group Holdings, Inc. | 180,300 | $10.7M | 0.02% | +38,410+27.1% | Added |
| Aew Capital Management L P | 180,990 | $10.8M | 0.45% | +73,960+69.1% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 183,800 | $10.9M | 0.03% | −3,582−1.9% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 184,370 | $11.0M | 0.02% | −260,335−58.5% | Reduced |
| State of Wisconsin Investment Board | 186,877 | $11.1M | 0.03% | +17,439+10.3% | Added |
| Guggenheim Capital LLC | 190,825 | $11.3M | 0.10% | −21,972−10.3% | Reduced |
| Gilman Hill Asset Management, LLC | 191,310 | $11.4M | 2.25% | −14,443−7.0% | Reduced |
| Churchill Management Corp | 191,758 | $11.4M | 0.19% | −9,242−4.6% | Reduced |
| SG Americas Securities, LLC | 192,518 | $11.4M | 0.15% | −222,265−53.6% | Reduced |
| Commonwealth Equity Services, LLC | 198,302 | $11.8M | 0.02% | +10,063+5.3% | Added |
| United Capital Financial Advisers, LLC | 204,256 | $12.1M | 0.08% | −21,541−9.5% | Reduced |
| Lazard Asset Management LLC | 206,956 | $12.3M | 0.02% | −37,351−15.3% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 214,090 | $12.7M | 0.02% | −36,900−14.7% | Reduced |
| Allianz Asset Management GmbH | 214,524 | $12.8M | 0.03% | −16,430−7.1% | Reduced |
| Manufacturers Life Insurance Company, The | 222,270 | $13.2M | 0.01% | +14,905+7.2% | Added |
| First Trust Advisors LP | 222,610 | $13.2M | 0.02% | −38,092−14.6% | Reduced |
| Jane Street Group, LLC | 224,178 | $13.3M | 0.02% | +159,295+245.5% | Added |
| Uniplan Investment Counsel, Inc. | 229,308 | $13.5M | 1.04% | +2,944+1.3% | Added |
| SEI Investments Co | 231,332 | $13.8M | 0.02% | −76,050−24.7% | Reduced |
| Citigroup Inc | 237,090 | $14.1M | 0.02% | +11,911+5.3% | Added |
| Swedbank AB | 241,702 | $14.4M | 0.03% | +6,000+2.5% | Added |
| Retirement Systems of Alabama | 242,962 | $14.4M | 0.07% | −1,190−0.5% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 254,031 | $15.1M | 0.07% | +174,813+220.7% | Added |
| Crossmark Global Holdings, Inc. | 257,978 | $15.4M | 0.35% | +5,141+2.0% | Added |
| ExodusPoint Capital Management, LP | 277,132 | $16.5M | 0.21% | +78,725+39.7% | Added |
| TD Asset Management Inc | 287,910 | $17.1M | 0.02% | −35,553−11.0% | Reduced |
| Adage Capital Partners GP, L.L.C. | 290,152 | $17.2M | 0.04% | +49,600+20.6% | Added |
| Dana Investment Advisors, Inc. | 292,319 | $17.4M | 0.89% | −13,259−4.3% | Reduced |
| United Bank | 295,262 | $17.6M | 2.31% | −5,745−1.9% | Reduced |
| Royal Bank of Canada | 313,408 | $18.6M | 0.01% | −211,966−40.3% | Reduced |
| State Board of Administration of Florida Retirement System | 313,939 | $18.7M | 0.04% | +430+0.1% | Added |
| Great West Life Assurance Co | 314,558 | $18.7M | 0.04% | −1,210−0.4% | Reduced |
| Aviva PLC | 315,287 | $18.7M | 0.08% | −51,391−14.0% | Reduced |
| Brookstone Capital Management | 314,391 | $18.8M | 0.41% | −54,561−14.8% | Reduced |
| New York State Teachers Retirement System | 316,095 | $18.8M | 0.05% | −3,155−1.0% | Reduced |
| New York State Common Retirement Fund | 316,640 | $18.8M | 0.03% | −29,414−8.5% | Reduced |
| CI Private Wealth, LLC | 317,388 | $18.9M | 0.04% | −76,077−19.3% | Reduced |
| Adell Harriman & Carpenter Inc | 325,631 | $19.4M | 2.01% | +4,520+1.4% | Added |
| Balyasny Asset Management LLC | 326,624 | $19.4M | 0.05% | +310,607+1,939.2% | Added |
| Mirae Asset Global Investments Co., Ltd. | 345,344 | $20.5M | 0.05% | +22,766+7.1% | Added |
| Principal Financial Group Inc | 353,664 | $21.0M | 0.02% | +9,971+2.9% | Added |
| Blair William & Co | 353,827 | $21.0M | 0.08% | +1,176+0.3% | Added |
| Raymond James & Associates | 359,759 | $21.4M | 0.02% | +3,037+0.9% | Added |
| Voloridge Investment Management, LLC | 359,924 | $21.4M | 0.11% | +288,309+402.6% | Added |
| HSBC Holdings PLC | 360,586 | $21.5M | 0.02% | −8,606−2.3% | Reduced |
| State of Tennessee, Treasury Department | 362,537 | $21.6M | 0.09% | +260,042+253.7% | Added |
| Alliancebernstein L.P. | 364,810 | $21.7M | 0.01% | −32,765−8.2% | Reduced |
| Cookson Peirce & Co Inc | 405,203 | $24.1M | 1.58% | −2,856−0.7% | Reduced |
| Nomura Asset Management Co Ltd | 405,661 | $24.1M | 0.11% | +3,657+0.9% | Added |
| Pacer Advisors, Inc. | 407,677 | $24.2M | 0.09% | −86,072−17.4% | Reduced |
| National Pension Service | 413,929 | $24.8M | 0.04% | −14,260−3.3% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 435,101 | $25.9M | 0.05% | +11,123+2.6% | Added |
| California State Teachers Retirement System | 455,449 | $27.1M | 0.04% | −20,200−4.2% | Reduced |
| Marble Harbor Investment Counsel, LLC | 461,402 | $27.4M | 3.60% | −5,507−1.2% | Reduced |
| LPL Financial LLC | 473,604 | $28.2M | 0.02% | +2,338+0.5% | Added |
| Price T Rowe Associates Inc | 474,443 | $28.2M | 0.00% | −1,106−0.2% | Reduced |
| Stifel Financial Corp | 483,519 | $28.7M | 0.04% | −32,848−6.4% | Reduced |
| Credit Suisse AG | 535,844 | $31.9M | 0.03% | +12,873+2.5% | Added |
| Barclays PLC | 564,488 | $33.6M | 0.02% | −35,105−5.9% | Reduced |
| Asset Management One Co.,Ltd. | 567,274 | $33.7M | 0.15% | −108,110−16.0% | Reduced |
| Envestnet Asset Management Inc | 568,244 | $33.8M | 0.02% | −30,480−5.1% | Reduced |
| Brookfield Asset Management Inc. | 575,809 | $34.2M | 0.21% | +575,809 | New |
| California Public Employees Retirement System | 578,558 | $34.4M | 0.03% | −6,523−1.1% | Reduced |
| Bank of Montreal | 546,709 | $34.6M | 0.02% | −34,578−5.9% | Reduced |
| Border to Coast Pensions Partnership Ltd | 581,040 | $34.8M | 0.93% | −25,000−4.1% | Reduced |
| Wells Fargo & Company | 640,480 | $38.1M | 0.01% | −38,906−5.7% | Reduced |
| First Republic Investment Management, Inc. | 646,426 | $38.4M | 0.11% | +646,426 | New |
| Rhumbline Advisers | 647,059 | $38.5M | 0.04% | −2,074−0.3% | Reduced |
| Neuberger Berman Group LLC | 710,885 | $42.3M | 0.04% | −307,653−30.2% | Reduced |
| Welch & Forbes LLC | 737,694 | $43.9M | 0.73% | −6,830−0.9% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 743,910 | $44.2M | 0.14% | +26,240+3.7% | Added |
| Captrust Financial Advisors | 767,677 | $45.6M | 0.17% | +483,757+170.4% | Added |
| Nuveen Asset Management, LLC | 832,937 | $49.5M | 0.02% | −37,440−4.3% | Reduced |
| Rockefeller Capital Management L.P. | 835,557 | $49.7M | 0.19% | −61,378−6.8% | Reduced |
| Canada Pension Plan Investment Board | 859,490 | $51.1M | 0.07% | −8,100−0.9% | Reduced |
| Heitman Real Estate Securities LLC | 868,819 | $51.7M | 3.11% | +868,819 | New |
| Goldman Sachs Group Inc | 880,709 | $52.4M | 0.01% | +46,580+5.6% | Added |
| UBS Group AG | 892,448 | $53.1M | 0.02% | +30,140+3.5% | Added |
| Swiss National Bank | 938,061 | $55.8M | 0.04% | −114,800−10.9% | Reduced |
| Bank of America Corp | 946,771 | $56.3M | 0.01% | +65,233+7.4% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 950,703 | $56.5M | 0.05% | −12,613−1.3% | Reduced |