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 |
|---|---|---|---|---|---|
| Metropolitan Life Insurance Co | 61,154 | $3.20M | 0.04% | −1,617−2.6% | Reduced |
| Peapack Gladstone Financial Corp | 60,511 | $3.17M | 0.06% | −120.0% | Reduced |
| Nepsis, Inc. | 59,894 | $3.13M | 0.91% | +104+0.2% | Added |
| CIBC Private Wealth Group, LLC | 59,896 | $3.13M | 0.01% | +40,364+206.7% | Added |
| Nissay Asset Management Corp | 59,429 | $3.11M | 0.02% | +868+1.5% | Added |
| SG Americas Securities, LLC | 58,855 | $3.08M | 0.02% | −155,500−72.5% | Reduced |
| Achmea Investment Management B.V. | 58,428 | $3.06M | 0.15% | 00.0% | Unchanged |
| Comerica Bank | 68,976 | $3.04M | 0.02% | −165−0.2% | Reduced |
| Yousif Capital Management, LLC | 58,005 | $3.04M | 0.03% | +58,005 | New |
| Edgestream Partners, L.P. | 57,490 | $3.01M | 0.19% | +31,130+118.1% | Added |
| Madden Securities Corp | 56,744 | $2.97M | 1.39% | −546−1.0% | Reduced |
| The PNC Financial Services Group, Inc. | 55,947 | $2.93M | 0.00% | −50,923−47.6% | Reduced |
| Teacher Retirement System of Texas | 55,849 | $2.92M | 0.01% | −16,355−22.7% | Reduced |
| Tower Research Capital LLC (TRC) | 55,302 | $2.89M | 0.05% | +37,875+217.3% | Added |
| Vectors Research Management, LLC | 54,823 | $2.87M | 0.61% | +2,000+3.8% | Added |
| Vident Investment Advisory, LLC | 54,337 | $2.85M | 0.07% | +1,902+3.6% | Added |
| Moody Lynn & Lieberson, LLC | 54,076 | $2.83M | 0.19% | +54,076 | New |
| Russell Investments Group, Ltd. | 54,003 | $2.83M | 0.00% | −3,951−6.8% | Reduced |
| HNP Capital LLC | 53,966 | $2.82M | 0.64% | +1,994+3.8% | Added |
| MML Investors Services, LLC | 53,317 | $2.79M | 0.02% | −546−1.0% | Reduced |
| Werlinich Asset Management, LLC | 52,840 | $2.77M | 2.01% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 52,382 | $2.76M | 0.01% | +10,487+25.0% | Added |
| Utah Retirement Systems | 51,914 | $2.72M | 0.03% | +100+0.2% | Added |
| Moody National Bank Trust Division | 51,080 | $2.67M | 0.08% | −150,440−74.7% | Reduced |
| Eaton Vance Management | 50,881 | $2.66M | 0.00% | +203+0.4% | Added |
| British Columbia Investment Management Corp | 50,719 | $2.65M | 0.01% | −2,633−4.9% | Reduced |
| EAM Global Investors LLC | 50,211 | $2.63M | 0.47% | +22,003+78.0% | Added |
| Disciplined Equity Management, Inc. | 49,535 | $2.59M | 2.50% | +49,535 | New |
| Public Sector Pension Investment Board | 48,310 | $2.53M | 0.01% | −7,584−13.6% | Reduced |
| Vert Asset Management LLC | 48,266 | $2.53M | 2.08% | +48,266 | New |
| State of Tennessee, Treasury Department | 48,047 | $2.51M | 0.01% | −738−1.5% | Reduced |
| TKG Advisors, LLC | 47,530 | $2.49M | 1.96% | +47,530 | New |
| Schroder Investment Management Group | 47,142 | $2.47M | 0.00% | +1,440+3.2% | Added |
| Shell Asset Management Co | 46,981 | $2.46M | 0.05% | +7,243+18.2% | Added |
| Cetera Investment Advisers | 46,788 | $2.45M | 0.04% | +4,112+9.6% | Added |
| National Asset Management, Inc. | 46,466 | $2.43M | 0.07% | −241−0.5% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 46,007 | $2.41M | 0.05% | +2,621+6.0% | Added |
| Hussman Strategic Advisors, Inc. | 46,000 | $2.41M | 0.53% | +46,000 | New |
| Searle & Co. | 45,200 | $2.37M | 0.86% | 00.0% | Unchanged |
| Gulf International Bank (UK) Ltd | 45,064 | $2.36M | 0.03% | +45,064 | New |
| Castleview Partners, LLC | 123,080 | $2.35M | 0.02% | +123,080 | New |
| D.A. Davidson & Co. | 44,498 | $2.33M | 0.02% | +6,005+15.6% | Added |
| DnB Asset Management AS | 44,268 | $2.32M | 0.01% | +4,352+10.9% | Added |
| Baird Financial Group, Inc. | 44,065 | $2.31M | 0.01% | −5,696−11.4% | Reduced |
| Pensionfund Sabic | 44,000 | $2.30M | 0.43% | 00.0% | Unchanged |
| Virtus ETF Advisers LLC | 43,963 | $2.30M | 0.87% | +7,679+21.2% | Added |
| Hartford Investment Management Co | 43,864 | $2.29M | 0.05% | +2,597+6.3% | Added |
| Mackay Shields LLC | 43,826 | $2.29M | 0.02% | −2,232−4.8% | Reduced |
| GWM Advisors LLC | 43,787 | $2.29M | 0.03% | +14,361+48.8% | Added |
| Pacitti Group Inc. | 43,318 | $2.27M | 1.47% | +455+1.1% | Added |
| Thrivent Financial for Lutherans | 43,291 | $2.27M | 0.00% | −1,523−3.4% | Reduced |
| SeaBridge Investment Advisors LLC | 43,024 | $2.25M | 0.72% | −11,015−20.4% | Reduced |
| Agf Investments Inc. | 42,812 | $2.24M | 0.02% | −12,777−23.0% | Reduced |
| CIBC World Markets Inc. | 42,566 | $2.23M | 0.01% | −200−0.5% | Reduced |
| ING Groep NV | 42,174 | $2.21M | 0.02% | +12,028+39.9% | Added |
| Sculati Wealth Management, LLC | 42,061 | $2.20M | 1.06% | +735+1.8% | Added |
| Roberts Wealth Advisors, LLC | 40,424 | $2.12M | 0.76% | −1,788−4.2% | Reduced |
| IFM Investors Pty Ltd | 40,190 | $2.10M | 0.04% | 00.0% | Unchanged |
| U.S. Capital Wealth Advisors, LLC | 40,141 | $2.10M | 0.08% | −37,063−48.0% | Reduced |
| Texas Permanent School Fund | 39,938 | $2.09M | 0.03% | −4,781−10.7% | Reduced |
| Globeflex Capital L P | 39,326 | $2.06M | 0.42% | +33,882+622.4% | Added |
| DuPont Capital Management Corp | 39,225 | $2.05M | 0.07% | −3,842−8.9% | Reduced |
| Xponance, Inc. | 38,970 | $2.04M | 0.03% | +3,505+9.9% | Added |
| AE Wealth Management LLC | 38,874 | $2.03M | 0.01% | −942−2.4% | Reduced |
| Public Employees Retirement Association of Colorado | 38,491 | $2.01M | 0.01% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 38,232 | $2.00M | 0.02% | +254+0.7% | Added |
| Horizon Investments, LLC | 37,877 | $1.98M | 0.06% | +2,013+5.6% | Added |
| Ziegler Capital Management, LLC | 39,054 | $1.98M | 0.07% | −3,340−7.9% | Reduced |
| RB Capital Management, LLC | 37,517 | $1.96M | 0.61% | +1,448+4.0% | Added |
| Mercer Global Advisors Inc | 37,184 | $1.95M | 0.01% | −3,965−9.6% | Reduced |
| Bessemer Group Inc | 36,944 | $1.93M | 0.00% | +1,483+4.2% | Added |
| Mathes Company, Inc. | 36,850 | $1.93M | 0.66% | −2,300−5.9% | Reduced |
| American National Insurance Co | 36,660 | $1.92M | 0.42% | −164,690−81.8% | Reduced |
| Vestcor Inc | 36,375 | $1.90M | 0.07% | −25,786−41.5% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 36,344 | $1.90M | 0.02% | +70+0.2% | Added |
| Madison Asset Management, LLC | 36,160 | $1.89M | 0.02% | +2,538+7.5% | Added |
| Independent Advisor Alliance | 35,433 | $1.85M | 0.09% | +446+1.3% | Added |
| Cutler Group LP | 35,316 | $1.85M | 0.13% | +30,821+685.7% | Added |
| Advisory Services Network, LLC | 35,064 | $1.83M | 0.05% | −18,013−33.9% | Reduced |
| Jefferies Group LLC | 34,500 | $1.81M | 0.03% | +23,302+208.1% | Added |
| Sippican Capital Advisors | 34,432 | $1.80M | 1.53% | −1,530−4.3% | Reduced |
| McMillion Capital Management Inc | 34,137 | $1.79M | 0.97% | +34,137 | New |
| CoreFirst Bank & Trust | 33,840 | $1.77M | 1.15% | −240−0.7% | Reduced |
| Kavar Capital Partners Group, LLC | 33,623 | $1.76M | 0.37% | −675−2.0% | Reduced |
| Holderness Investments Co | 33,471 | $1.75M | 0.52% | +200+0.6% | Added |
| Redwood Investment Management, LLC | 33,486 | $1.75M | 0.23% | +8,232+32.6% | Added |
| Lockheed Martin Investment Management Co | 33,428 | $1.75M | 0.09% | +33,428 | New |
| Fayez Sarofim & Co | 32,983 | $1.73M | 0.01% | +13,840+72.3% | Added |
| Dumont & Blake Investment Advisors LLC | 32,310 | $1.69M | 0.44% | +1,343+4.3% | Added |
| AQR Capital Management LLC | 32,165 | $1.68M | 0.00% | −2,478−7.2% | Reduced |
| Ancora Advisors, LLC | 31,875 | $1.67M | 0.04% | +454+1.4% | Added |
| Churchill Management Corp | 31,559 | $1.65M | 0.02% | +31,559 | New |
| Los Angeles Capital Management LLC | 31,410 | $1.64M | 0.01% | +11,235+55.7% | Added |
| Norinchukin Bank, The | 31,283 | $1.64M | 0.02% | +372+1.2% | Added |
| Eqis Capital Management, Inc. | 30,856 | $1.61M | 0.12% | +2,339+8.2% | Added |
| Alps Advisors Inc | 30,824 | $1.61M | 0.02% | −2,594−7.8% | Reduced |
| Griffin Asset Management, Inc. | 30,811 | $1.61M | 0.20% | −4,177−11.9% | Reduced |
| Oppenheimer & Co Inc | 30,191 | $1.58M | 0.03% | −1,295−4.1% | Reduced |
| Northwestern Mutual Wealth Management Co | 29,835 | $1.56M | 0.00% | +4,961+19.9% | Added |
| Herbst Group, LLC | 29,386 | $1.54M | 0.95% | +29,386 | New |