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 2021
Institutional positions in Iron Mountain Inc as of Sep 30, 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
- 711
- +31 vs. Q2 2021
- Shares held
- 228.6M
- +133.0K (+0.1%) vs. Q2 2021
- Total value
- $9.94B
- +$260.5M (+2.7%) vs. Q2 2021
- New holders
- 73
- 282 more added
- Sold out
- 42
- 244 more reduced
7 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2021
Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Nissay Asset Management Corp | 58,561 | $2.54M | 0.02% | +2,772+5.0% | Added |
| M&T Bank Corp | 59,627 | $2.59M | 0.01% | +877+1.5% | Added |
| Nepsis, Inc. | 59,790 | $2.60M | 0.82% | +59,790 | New |
| HighTower Advisors, LLC | 60,132 | $2.61M | 0.01% | −2,612−4.2% | Reduced |
| G&S Capital LLC | 60,273 | $2.62M | 1.44% | +60,273 | New |
| Peapack Gladstone Financial Corp | 60,523 | $2.63M | 0.05% | −8,732−12.6% | Reduced |
| Vestcor Inc | 62,161 | $2.70M | 0.10% | −36,059−36.7% | Reduced |
| Metropolitan Life Insurance Co | 62,771 | $2.73M | 0.04% | −478−0.8% | Reduced |
| Donoghue Forlines LLC | 63,149 | $2.74M | 0.53% | +35,862+131.4% | Added |
| USS Investment Management Ltd | 63,698 | $2.77M | 0.02% | −15,583−19.7% | Reduced |
| Acadian Asset Management LLC | 63,811 | $2.77M | 0.01% | +30,641+92.4% | Added |
| MetLife Investment Management | 65,376 | $2.84M | 0.03% | −1,564−2.3% | Reduced |
| Salem Investment Counselors Inc | 65,773 | $2.86M | 0.16% | +2,175+3.4% | Added |
| U.S. Capital Wealth Advisors, LLC | 77,204 | $2.86M | 0.12% | +77,204 | New |
| Oliver Luxxe Assets LLC | 68,323 | $2.97M | 0.82% | −59,361−46.5% | Reduced |
| Cetera Advisors LLC | 69,023 | $3.00M | 0.06% | +4,776+7.4% | Added |
| Banco Bilbao Vizcaya Argentaria, S.A. | 69,320 | $3.01M | 0.05% | +143+0.2% | Added |
| Westpac Banking Corp | 70,522 | $3.06M | 0.03% | −4,500−6.0% | Reduced |
| Truvestments Capital LLC | 70,580 | $3.07M | 1.69% | +2,412+3.5% | Added |
| Victory Capital Management Inc | 71,755 | $3.12M | 0.00% | −22,357−23.8% | Reduced |
| Advisors Asset Management, Inc. | 71,907 | $3.12M | 0.05% | +4,154+6.1% | Added |
| Teacher Retirement System of Texas | 72,204 | $3.14M | 0.02% | +34,437+91.2% | Added |
| Exchange Traded Concepts, LLC | 72,343 | $3.14M | 0.08% | +71,598+9,610.5% | Added |
| Comerica Bank | 69,141 | $3.18M | 0.02% | −11,873−14.7% | Reduced |
| Cetera Advisor Networks LLC | 74,062 | $3.22M | 0.04% | +3,849+5.5% | Added |
| Peak Financial Advisors LLC | 75,283 | $3.27M | 2.88% | +63,225+524.3% | Added |
| Breiter Capital Management Inc | 75,644 | $3.29M | 1.88% | +52,228+223.0% | Added |
| State of Michigan Retirement System | 77,996 | $3.39M | 0.02% | +100+0.1% | Added |
| Squarepoint Ops LLC | 79,546 | $3.46M | 0.02% | +79,546 | New |
| Arizona State Retirement System | 81,029 | $3.52M | 0.03% | −492−0.6% | Reduced |
| National Pension Service | 83,245 | $3.62M | 0.01% | +83,245 | New |
| Burney Co | 83,312 | $3.62M | 0.17% | +12,867+18.3% | Added |
| NN Investment Partners Holdings N.V. | 84,059 | $3.65M | 0.02% | +4,643+5.8% | Added |
| Beck Capital Management, LLC | 86,534 | $3.76M | 1.26% | −2,428−2.7% | Reduced |
| Nelson Capital Management, LLC | 87,800 | $3.81M | 0.76% | −591−0.7% | Reduced |
| Aviva PLC | 87,857 | $3.82M | 0.02% | −4,858−5.2% | Reduced |
| American International Group, Inc. | 88,122 | $3.83M | 0.02% | −1,676−1.9% | Reduced |
| ProShare Advisors LLC | 89,276 | $3.88M | 0.01% | +1,317+1.5% | Added |
| Erste Asset Management GmbH | 88,000 | $3.90M | 0.08% | +5,500+6.7% | Added |
| Moors & Cabot, Inc. | 90,841 | $3.94M | 0.25% | +5,774+6.8% | Added |
| Azimuth Capital Management LLC | 91,668 | $3.98M | 0.17% | +160+0.2% | Added |
| Wealthfront Advisers LLC | 92,692 | $4.03M | 0.02% | +40,632+78.0% | Added |
| Chicago Capital, LLC | 93,465 | $4.06M | 0.15% | −240.0% | Reduced |
| Sonora Investment Management, LLC | 94,509 | $4.11M | 0.51% | −1,955−2.0% | Reduced |
| Evergreen Capital Management LLC | 94,562 | $4.11M | 0.19% | +94,562 | New |
| Siemens Fonds Invest GmbH | 95,218 | $4.14M | 0.28% | +3,051+3.3% | Added |
| Private Advisor Group, LLC | 96,798 | $4.21M | 0.03% | +21,489+28.5% | Added |
| Cambridge Investment Research Advisors, Inc. | 97,931 | $4.25M | 0.02% | −12,742−11.5% | Reduced |
| AMP Capital Investors Ltd | 98,796 | $4.29M | 0.02% | −10,172−9.3% | Reduced |
| Bank of Nova Scotia | 99,021 | $4.30M | 0.01% | +43,404+78.0% | Added |
| Pensionfund DSM Netherlands | 99,500 | $4.32M | 0.55% | 00.0% | Unchanged |
| Royal London Asset Management Ltd | 99,542 | $4.32M | 0.02% | −2,112−2.1% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 100,000 | $4.34M | 0.01% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 100,354 | $4.36M | 0.19% | +1,129+1.1% | Added |
| Daiwa Securities Group Inc. | 101,539 | $4.41M | 0.03% | +1,049+1.0% | Added |
| WBI Investments | 105,638 | $4.45M | 0.75% | −4,661−4.2% | Reduced |
| Baker Ellis Asset Management LLC | 103,686 | $4.49M | 0.86% | +1,433+1.4% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 105,365 | $4.58M | 0.04% | −4,200−3.8% | Reduced |
| Natixis | 105,987 | $4.61M | 0.02% | −168,868−61.4% | Reduced |
| Avantax Advisory Services, Inc. | 106,033 | $4.61M | 0.08% | −1,807−1.7% | Reduced |
| Franklin Resources Inc | 106,803 | $4.64M | 0.00% | +99,062+1,279.7% | Added |
| The PNC Financial Services Group, Inc. | 106,870 | $4.64M | 0.00% | +6,478+6.5% | Added |
| Treasurer of the State of North Carolina | 107,422 | $4.67M | 0.03% | +3,489+3.4% | Added |
| Natixis Advisors, L.P. | 110,154 | $4.79M | 0.02% | +11,439+11.6% | Added |
| Woodstock Corp | 111,819 | $4.86M | 0.57% | −727−0.6% | Reduced |
| Oregon Public Employees Retirement Fund | 112,789 | $4.90M | 0.06% | +5,775+5.4% | Added |
| American Trust Investment Advisors, LLC | 113,201 | $4.92M | 2.77% | −5,640−4.7% | Reduced |
| Amalgamated Bank | 114,468 | $4.97M | 0.04% | −3,066−2.6% | Reduced |
| Forsta Ap-Fonden | 114,500 | $4.97M | 0.06% | +28,400+33.0% | Added |
| Cubist Systematic Strategies, LLC | 116,484 | $5.06M | 0.06% | −157,708−57.5% | Reduced |
| Berger Financial Group, Inc | 124,544 | $5.41M | 0.98% | −2,919−2.3% | Reduced |
| Greystone Financial Group, LLC | 125,618 | $5.46M | 1.62% | −44,122−26.0% | Reduced |
| Dai-Ichi Life Insurance Company, Ltd | 129,805 | $5.64M | 0.07% | 00.0% | Unchanged |
| Duality Advisers, LP | 129,996 | $5.65M | 0.43% | +52,924+68.7% | Added |
| Ar Asset Management Inc | 131,600 | $5.72M | 1.60% | +3,000+2.3% | Added |
| Truist Financial Corp | 131,986 | $5.74M | 0.01% | +4,486+3.5% | Added |
| Tudor Investment Corp Et Al | 136,100 | $5.91M | 0.12% | +100,444+281.7% | Added |
| State of Wisconsin Investment Board | 138,316 | $6.01M | 0.01% | +9,516+7.4% | Added |
| Qube Research & Technologies Ltd | 138,697 | $6.03M | 0.08% | −100,116−41.9% | Reduced |
| Macquarie Group Ltd | 140,186 | $6.09M | 0.01% | +2,694+2.0% | Added |
| Brookstone Capital Management | 141,964 | $6.14M | 0.11% | +14,990+11.8% | Added |
| BNP Paribas Arbitrage, SA | 141,655 | $6.15M | 0.01% | −97,374−40.7% | Reduced |
| Janney Montgomery Scott LLC | 143,621 | $6.24M | 0.03% | +27,433+23.6% | Added |
| Neuberger Berman Group LLC | 155,368 | $6.54M | 0.01% | −16,197−9.4% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 157,730 | $6.85M | 0.01% | +47,776+43.5% | Added |
| Snowden Capital Advisors LLC | 158,258 | $6.88M | 0.34% | +4,237+2.8% | Added |
| Trust Co of Virginia | 159,058 | $6.91M | 0.77% | −520.0% | Reduced |
| Atalanta Sosnoff Capital, LLC | 163,876 | $7.12M | 0.17% | +1,806+1.1% | Added |
| Mutual Advisors, LLC | 163,931 | $7.12M | 0.42% | +1,672+1.0% | Added |
| Sargent Investment Group, LLC | 164,075 | $7.13M | 1.73% | +4,252+2.7% | Added |
| State of New Jersey Common Pension Fund D | 165,729 | $7.20M | 0.02% | −1,734−1.0% | Reduced |
| Guggenheim Capital LLC | 167,684 | $7.29M | 0.04% | −42,576−20.2% | Reduced |
| Public Employees Retirement System of Ohio | 170,082 | $7.39M | 0.03% | −7,059−4.0% | Reduced |
| Renaissance Technologies LLC | 173,363 | $7.53M | 0.01% | −199,200−53.5% | Reduced |
| Swiss Life Asset Management Ltd | 174,539 | $7.58M | 0.11% | +14,019+8.7% | Added |
| Standard Life Aberdeen plc | 172,929 | $7.63M | 0.02% | −1,147−0.7% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 177,727 | $7.72M | 0.03% | −6,256−3.4% | Reduced |
| Millennium Management LLC | 177,834 | $7.73M | 0.01% | −169,402−48.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 177,851 | $7.73M | 0.04% | −25,306−12.5% | Reduced |
| CIBC World Markets Corp | 184,408 | $8.01M | 0.05% | +53,044+40.4% | Added |