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, Q4 2022
Institutional positions in Iron Mountain Inc as of Dec 31, 2022. 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
- 782
- +54 vs. Q3 2022
- Shares held
- 228.9M
- +3.02M (+1.3%) vs. Q3 2022
- Total value
- $11.4B
- +$1.43B (+14.3%) vs. Q3 2022
- New holders
- 93
- 300 more added
- Sold out
- 39
- 251 more reduced
15 institutions that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2022
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Schonfeld Strategic Advisors LLC | 76,143 | $3.80M | 0.03% | +8,104+11.9% | Added |
| Hourglass Capital, LLC | 76,750 | $3.83M | 1.35% | +50+0.1% | Added |
| Burney Co | 76,800 | $3.83M | 0.19% | −19,834−20.5% | Reduced |
| Woodstock Corp | 77,159 | $3.85M | 0.51% | −1,502−1.9% | Reduced |
| Avantax Advisory Services, Inc. | 77,476 | $3.86M | 0.05% | +2,070+2.7% | Added |
| State of Michigan Retirement System | 79,046 | $3.94M | 0.03% | +400+0.5% | Added |
| MML Investors Services, LLC | 79,666 | $3.97M | 0.03% | +5,476+7.4% | Added |
| Salem Investment Counselors Inc | 78,848 | $3.98M | 0.17% | −2,925−3.6% | Reduced |
| American International Group, Inc. | 80,091 | $3.99M | 0.03% | −2,094−2.5% | Reduced |
| Moors & Cabot, Inc. | 80,305 | $4.00M | 0.28% | −864−1.1% | Reduced |
| Renaissance Technologies LLC | 80,600 | $4.02M | 0.01% | −53,900−40.1% | Reduced |
| TD Private Client Wealth LLC | 82,015 | $4.09M | 0.19% | −1,668−2.0% | Reduced |
| Arizona State Retirement System | 82,280 | $4.10M | 0.04% | +2,501+3.1% | Added |
| Allspring Global Investments Holdings, LLC | 83,267 | $4.15M | 0.01% | −6,302−7.0% | Reduced |
| Fifth Third Bancorp | 83,682 | $4.17M | 0.02% | −9,674−10.4% | Reduced |
| Handelsbanken Fonder AB | 84,347 | $4.21M | 0.03% | −402,699−82.7% | Reduced |
| MetLife Investment Management | 84,478 | $4.21M | 0.03% | −1,600−1.9% | Reduced |
| Meiji Yasuda Asset Management Co Ltd. | 84,596 | $4.22M | 0.21% | −317−0.4% | Reduced |
| Swiss Life Asset Management Ltd | 84,647 | $4.22M | 0.07% | −26,106−23.6% | Reduced |
| Siemens Fonds Invest GmbH | 85,507 | $4.26M | 0.43% | −1,208−1.4% | Reduced |
| USS Investment Management Ltd | 85,560 | $4.26M | 0.06% | +11,900+16.2% | Added |
| Baker Ellis Asset Management LLC | 87,122 | $4.34M | 0.84% | −3,645−4.0% | Reduced |
| La Banque Postale Asset Management SA | 87,489 | $4.36M | 0.12% | +87,489 | New |
| Ensign Peak Advisors, Inc | 89,336 | $4.45M | 0.01% | +2,900+3.4% | Added |
| Westpac Banking Corp | 89,768 | $4.47M | 0.07% | +11,230+14.3% | Added |
| PFS Investments Inc. | 90,422 | $4.51M | 0.08% | +166+0.2% | Added |
| Bridgewater Associates, LP | 90,623 | $4.52M | 0.02% | +29,163+47.5% | Added |
| Chicago Capital, LLC | 92,156 | $4.59M | 0.25% | 00.0% | Unchanged |
| Sonora Investment Management Group, LLC | 92,754 | $4.62M | 0.42% | −1,910−2.0% | Reduced |
| Macquarie Group Ltd | 96,836 | $4.83M | 0.01% | +8,702+9.9% | Added |
| State of Tennessee, Treasury Department | 98,482 | $4.91M | 0.02% | −3,432−3.4% | Reduced |
| M&T Bank Corp | 100,551 | $5.01M | 0.02% | −437−0.4% | Reduced |
| Royal London Asset Management Ltd | 101,149 | $5.04M | 0.02% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 102,175 | $5.09M | 0.03% | −101,140−49.7% | Reduced |
| Daiwa Securities Group Inc. | 102,550 | $5.11M | 0.04% | −77−0.1% | Reduced |
| Knights of Columbus Asset Advisors LLC | 103,219 | $5.15M | 0.53% | +103,219 | New |
| Berger Financial Group, Inc | 104,120 | $5.19M | 0.69% | +1,918+1.9% | Added |
| Victory Capital Management Inc | 106,631 | $5.32M | 0.01% | −35,481−25.0% | Reduced |
| Azimuth Capital Investment Management LLC | 106,845 | $5.33M | 0.27% | −2,395−2.2% | Reduced |
| Erste Asset Management GmbH | 107,400 | $5.37M | 0.11% | +10,200+10.5% | Added |
| Amalgamated Bank | 109,123 | $5.44M | 0.05% | +1,960+1.8% | Added |
| State of Wisconsin Investment Board | 109,241 | $5.45M | 0.02% | +12,130+12.5% | Added |
| Cetera Advisor Networks LLC | 114,171 | $5.69M | 0.05% | +13,560+13.5% | Added |
| SEI Investments Co | 117,663 | $5.87M | 0.01% | −12,947−9.9% | Reduced |
| James Hambro & Partners | 119,147 | $5.94M | 0.45% | +69,810+141.5% | Added |
| D. E. Shaw & Co., Inc. | 119,841 | $5.97M | 0.01% | +103,193+619.9% | Added |
| Aew Capital Management L P | 121,630 | $6.06M | 0.24% | +121,630 | New |
| Cambridge Investment Research Advisors, Inc. | 121,713 | $6.07M | 0.03% | +3,255+2.7% | Added |
| CIBC World Markets Corp | 127,951 | $6.38M | 0.04% | +4,544+3.7% | Added |
| Treasurer of the State of North Carolina | 129,447 | $6.45M | 0.04% | −1,030−0.8% | Reduced |
| Natixis Advisors, L.P. | 129,999 | $6.48M | 0.02% | +4,710+3.8% | Added |
| EWG Elevate Inc. | 131,097 | $6.54M | 3.29% | +3,565+2.8% | Added |
| Ar Asset Management Inc | 131,600 | $6.56M | 1.86% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 138,301 | $6.89M | 0.01% | +112,078+427.4% | Added |
| Snowden Capital Advisors LLC | 138,384 | $6.90M | 0.29% | −4,053−2.8% | Reduced |
| WealthTrust Axiom LLC | 140,039 | $6.98M | 2.43% | −3,524−2.5% | Reduced |
| Andra AP-fonden | 141,500 | $7.05M | 0.21% | +54,900+63.4% | Added |
| Susquehanna Fundamental Investments, LLC | 144,259 | $7.19M | 0.12% | −42,859−22.9% | Reduced |
| Teacher Retirement System of Texas | 144,663 | $7.21M | 0.05% | +71,381+97.4% | Added |
| Standard Life Aberdeen plc | 147,239 | $7.34M | 0.02% | +10,258+7.5% | Added |
| Nisa Investment Advisors, LLC | 147,962 | $7.38M | 0.06% | +1,710+1.2% | Added |
| Advisor Group Holdings, Inc. | 150,159 | $7.49M | 0.02% | −19,999−11.8% | Reduced |
| Public Employees Retirement System of Ohio | 154,983 | $7.73M | 0.03% | +3,019+2.0% | Added |
| Ardsley Advisory Partners LP | 155,000 | $7.73M | 1.96% | +10,000+6.9% | Added |
| La Financiere de L'Echiquier | 159,150 | $7.93M | 0.50% | −26,953−14.5% | Reduced |
| Janney Montgomery Scott LLC | 160,115 | $7.98M | 0.03% | +13,383+9.1% | Added |
| Toronto Dominion Bank | 162,079 | $8.07M | 0.01% | +7,488+4.8% | Added |
| State of New Jersey Common Pension Fund D | 163,879 | $8.17M | 0.03% | 00.0% | Unchanged |
| Forsta Ap-Fonden | 164,200 | $8.19M | 0.09% | +70,500+75.2% | Added |
| Mutual Advisors, LLC | 166,893 | $8.32M | 0.37% | −624−0.4% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 167,207 | $8.34M | 0.04% | −10,289−5.8% | Reduced |
| Sheaff Brock Investment Advisors, LLC | 175,394 | $8.74M | 0.97% | +870.0% | Added |
| Trust Co of Virginia | 176,417 | $8.79M | 1.00% | +5,648+3.3% | Added |
| Storebrand Asset Management AS | 186,329 | $9.29M | 0.05% | +518+0.3% | Added |
| Commonwealth Equity Services, LLC | 186,522 | $9.30M | 0.02% | +2,107+1.1% | Added |
| State of Alaska, Department of Revenue | 187,086 | $9.32M | 0.12% | +1,960+1.1% | Added |
| Sargent Investment Group, LLC | 190,003 | $9.47M | 2.94% | +8,333+4.6% | Added |
| CIBC Private Wealth Group, LLC | 1,188,022 | $10.2M | 0.03% | −43,042−3.5% | Reduced |
| Guggenheim Capital LLC | 205,031 | $10.2M | 0.09% | +25,552+14.2% | Added |
| Gilman Hill Asset Management, LLC | 205,855 | $10.3M | 2.10% | +3,425+1.7% | Added |
| Korea Investment CORP | 206,881 | $10.3M | 0.03% | +18,166+9.6% | Added |
| Manufacturers Life Insurance Company, The | 212,829 | $10.6M | 0.01% | −7,361−3.3% | Reduced |
| Robeco Institutional Asset Management B.V. | 213,979 | $10.7M | 0.03% | +13,577+6.8% | Added |
| Aviva PLC | 219,262 | $10.9M | 0.05% | −70,379−24.3% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 219,345 | $10.9M | 0.02% | −4,622−2.1% | Reduced |
| First Trust Advisors LP | 230,188 | $11.5M | 0.01% | +47,492+26.0% | Added |
| United Capital Financial Advisers, LLC | 233,987 | $11.7M | 0.07% | −3,729−1.6% | Reduced |
| Crossmark Global Holdings, Inc. | 234,551 | $11.7M | 0.29% | +9,231+4.1% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 243,735 | $12.2M | 0.03% | +950.0% | Added |
| BNP Paribas Arbitrage, SA | 245,240 | $12.2M | 0.03% | +121,598+98.3% | Added |
| Hall Private Wealth Advisors | 248,262 | $12.4M | 7.04% | +1,719+0.7% | Added |
| Citigroup Inc | 253,965 | $12.7M | 0.02% | −140,645−35.6% | Reduced |
| Prudential Financial Inc | 256,938 | $12.8M | 0.02% | −217,876−45.9% | Reduced |
| Retirement Systems of Alabama | 270,532 | $13.5M | 0.06% | −8,450−3.0% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 270,993 | $13.5M | 0.02% | −209,676−43.6% | Reduced |
| Swedbank AB | 272,637 | $13.6M | 0.03% | −22,818−7.7% | Reduced |
| Captrust Financial Advisors | 274,811 | $13.7M | 0.07% | +11,098+4.2% | Added |
| AXA S.A. | 291,908 | $14.6M | 0.05% | −15,174−4.9% | Reduced |
| Adage Capital Partners GP, L.L.C. | 295,652 | $14.7M | 0.04% | −500−0.2% | Reduced |
| Allianz Asset Management GmbH | 308,525 | $15.4M | 0.03% | −7,910−2.5% | Reduced |