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 |
|---|---|---|---|---|---|
| Advisor Group Holdings, Inc. | 197,560 | $8.59M | 0.02% | +21,297+12.1% | Added |
| Vancity Investment Management Ltd | 196,192 | $8.53M | 1.09% | −923−0.5% | Reduced |
| Voya Investment Management LLC | 193,079 | $8.39M | 0.02% | +38,376+24.8% | Added |
| State of Alaska, Department of Revenue | 192,732 | $8.37M | 0.08% | +27,279+16.5% | Added |
| Gilman Hill Asset Management, LLC | 190,801 | $8.29M | 2.12% | −782−0.4% | Reduced |
| SEI Investments Co | 189,059 | $8.24M | 0.02% | +99,516+111.1% | Added |
| Toronto Dominion Bank | 188,520 | $8.19M | 0.01% | −27,543−12.7% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 186,088 | $8.09M | 0.02% | +2,439+1.3% | Added |
| Sheaff Brock Investment Advisors, LLC | 184,731 | $8.03M | 0.78% | −2,481−1.3% | Reduced |
| CIBC World Markets Corp | 184,408 | $8.01M | 0.05% | +53,044+40.4% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 177,851 | $7.73M | 0.04% | −25,306−12.5% | Reduced |
| Millennium Management LLC | 177,834 | $7.73M | 0.01% | −169,402−48.8% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 177,727 | $7.72M | 0.03% | −6,256−3.4% | Reduced |
| Standard Life Aberdeen plc | 172,929 | $7.63M | 0.02% | −1,147−0.7% | Reduced |
| Swiss Life Asset Management Ltd | 174,539 | $7.58M | 0.11% | +14,019+8.7% | Added |
| Renaissance Technologies LLC | 173,363 | $7.53M | 0.01% | −199,200−53.5% | Reduced |
| Public Employees Retirement System of Ohio | 170,082 | $7.39M | 0.03% | −7,059−4.0% | Reduced |
| Guggenheim Capital LLC | 167,684 | $7.29M | 0.04% | −42,576−20.2% | Reduced |
| State of New Jersey Common Pension Fund D | 165,729 | $7.20M | 0.02% | −1,734−1.0% | Reduced |
| Sargent Investment Group, LLC | 164,075 | $7.13M | 1.73% | +4,252+2.7% | Added |
| Mutual Advisors, LLC | 163,931 | $7.12M | 0.42% | +1,672+1.0% | Added |
| Atalanta Sosnoff Capital, LLC | 163,876 | $7.12M | 0.17% | +1,806+1.1% | Added |
| Trust Co of Virginia | 159,058 | $6.91M | 0.77% | −520.0% | Reduced |
| Snowden Capital Advisors LLC | 158,258 | $6.88M | 0.34% | +4,237+2.8% | Added |
| Raymond James Financial Services Advisors, Inc. | 157,730 | $6.85M | 0.01% | +47,776+43.5% | Added |
| Neuberger Berman Group LLC | 155,368 | $6.54M | 0.01% | −16,197−9.4% | Reduced |
| Janney Montgomery Scott LLC | 143,621 | $6.24M | 0.03% | +27,433+23.6% | Added |
| BNP Paribas Arbitrage, SA | 141,655 | $6.15M | 0.01% | −97,374−40.7% | Reduced |
| Brookstone Capital Management | 141,964 | $6.14M | 0.11% | +14,990+11.8% | Added |
| Macquarie Group Ltd | 140,186 | $6.09M | 0.01% | +2,694+2.0% | Added |
| Qube Research & Technologies Ltd | 138,697 | $6.03M | 0.08% | −100,116−41.9% | Reduced |
| State of Wisconsin Investment Board | 138,316 | $6.01M | 0.01% | +9,516+7.4% | Added |
| Tudor Investment Corp Et Al | 136,100 | $5.91M | 0.12% | +100,444+281.7% | Added |
| Truist Financial Corp | 131,986 | $5.74M | 0.01% | +4,486+3.5% | Added |
| Ar Asset Management Inc | 131,600 | $5.72M | 1.60% | +3,000+2.3% | Added |
| Duality Advisers, LP | 129,996 | $5.65M | 0.43% | +52,924+68.7% | Added |
| Dai-Ichi Life Insurance Company, Ltd | 129,805 | $5.64M | 0.07% | 00.0% | Unchanged |
| Greystone Financial Group, LLC | 125,618 | $5.46M | 1.62% | −44,122−26.0% | Reduced |
| Berger Financial Group, Inc | 124,544 | $5.41M | 0.98% | −2,919−2.3% | Reduced |
| Cubist Systematic Strategies, LLC | 116,484 | $5.06M | 0.06% | −157,708−57.5% | Reduced |
| Forsta Ap-Fonden | 114,500 | $4.97M | 0.06% | +28,400+33.0% | Added |
| Amalgamated Bank | 114,468 | $4.97M | 0.04% | −3,066−2.6% | Reduced |
| American Trust Investment Advisors, LLC | 113,201 | $4.92M | 2.77% | −5,640−4.7% | Reduced |
| Oregon Public Employees Retirement Fund | 112,789 | $4.90M | 0.06% | +5,775+5.4% | Added |
| Woodstock Corp | 111,819 | $4.86M | 0.57% | −727−0.6% | Reduced |
| Natixis Advisors, L.P. | 110,154 | $4.79M | 0.02% | +11,439+11.6% | Added |
| Treasurer of the State of North Carolina | 107,422 | $4.67M | 0.03% | +3,489+3.4% | Added |
| The PNC Financial Services Group, Inc. | 106,870 | $4.64M | 0.00% | +6,478+6.5% | Added |
| Franklin Resources Inc | 106,803 | $4.64M | 0.00% | +99,062+1,279.7% | Added |
| Avantax Advisory Services, Inc. | 106,033 | $4.61M | 0.08% | −1,807−1.7% | Reduced |
| Natixis | 105,987 | $4.61M | 0.02% | −168,868−61.4% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 105,365 | $4.58M | 0.04% | −4,200−3.8% | Reduced |
| Baker Ellis Asset Management LLC | 103,686 | $4.49M | 0.86% | +1,433+1.4% | Added |
| WBI Investments | 105,638 | $4.45M | 0.75% | −4,661−4.2% | Reduced |
| Daiwa Securities Group Inc. | 101,539 | $4.41M | 0.03% | +1,049+1.0% | Added |
| TD Private Client Wealth LLC | 100,354 | $4.36M | 0.19% | +1,129+1.1% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 100,000 | $4.34M | 0.01% | 00.0% | Unchanged |
| Royal London Asset Management Ltd | 99,542 | $4.32M | 0.02% | −2,112−2.1% | Reduced |
| Pensionfund DSM Netherlands | 99,500 | $4.32M | 0.55% | 00.0% | Unchanged |
| Bank of Nova Scotia | 99,021 | $4.30M | 0.01% | +43,404+78.0% | Added |
| AMP Capital Investors Ltd | 98,796 | $4.29M | 0.02% | −10,172−9.3% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 97,931 | $4.25M | 0.02% | −12,742−11.5% | Reduced |
| Private Advisor Group, LLC | 96,798 | $4.21M | 0.03% | +21,489+28.5% | Added |
| Siemens Fonds Invest GmbH | 95,218 | $4.14M | 0.28% | +3,051+3.3% | Added |
| Evergreen Capital Management LLC | 94,562 | $4.11M | 0.19% | +94,562 | New |
| Sonora Investment Management, LLC | 94,509 | $4.11M | 0.51% | −1,955−2.0% | Reduced |
| Chicago Capital, LLC | 93,465 | $4.06M | 0.15% | −240.0% | Reduced |
| Wealthfront Advisers LLC | 92,692 | $4.03M | 0.02% | +40,632+78.0% | Added |
| Azimuth Capital Management LLC | 91,668 | $3.98M | 0.17% | +160+0.2% | Added |
| Moors & Cabot, Inc. | 90,841 | $3.94M | 0.25% | +5,774+6.8% | Added |
| Erste Asset Management GmbH | 88,000 | $3.90M | 0.08% | +5,500+6.7% | Added |
| ProShare Advisors LLC | 89,276 | $3.88M | 0.01% | +1,317+1.5% | Added |
| American International Group, Inc. | 88,122 | $3.83M | 0.02% | −1,676−1.9% | Reduced |
| Aviva PLC | 87,857 | $3.82M | 0.02% | −4,858−5.2% | Reduced |
| Nelson Capital Management, LLC | 87,800 | $3.81M | 0.76% | −591−0.7% | Reduced |
| Beck Capital Management, LLC | 86,534 | $3.76M | 1.26% | −2,428−2.7% | Reduced |
| NN Investment Partners Holdings N.V. | 84,059 | $3.65M | 0.02% | +4,643+5.8% | Added |
| Burney Co | 83,312 | $3.62M | 0.17% | +12,867+18.3% | Added |
| National Pension Service | 83,245 | $3.62M | 0.01% | +83,245 | New |
| Arizona State Retirement System | 81,029 | $3.52M | 0.03% | −492−0.6% | Reduced |
| Squarepoint Ops LLC | 79,546 | $3.46M | 0.02% | +79,546 | New |
| State of Michigan Retirement System | 77,996 | $3.39M | 0.02% | +100+0.1% | Added |
| Breiter Capital Management Inc | 75,644 | $3.29M | 1.88% | +52,228+223.0% | Added |
| Peak Financial Advisors LLC | 75,283 | $3.27M | 2.88% | +63,225+524.3% | Added |
| Cetera Advisor Networks LLC | 74,062 | $3.22M | 0.04% | +3,849+5.5% | Added |
| Comerica Bank | 69,141 | $3.18M | 0.02% | −11,873−14.7% | Reduced |
| Exchange Traded Concepts, LLC | 72,343 | $3.14M | 0.08% | +71,598+9,610.5% | Added |
| Teacher Retirement System of Texas | 72,204 | $3.14M | 0.02% | +34,437+91.2% | Added |
| Advisors Asset Management, Inc. | 71,907 | $3.12M | 0.05% | +4,154+6.1% | Added |
| Victory Capital Management Inc | 71,755 | $3.12M | 0.00% | −22,357−23.8% | Reduced |
| Truvestments Capital LLC | 70,580 | $3.07M | 1.69% | +2,412+3.5% | Added |
| Westpac Banking Corp | 70,522 | $3.06M | 0.03% | −4,500−6.0% | Reduced |
| Banco Bilbao Vizcaya Argentaria, S.A. | 69,320 | $3.01M | 0.05% | +143+0.2% | Added |
| Cetera Advisors LLC | 69,023 | $3.00M | 0.06% | +4,776+7.4% | Added |
| Oliver Luxxe Assets LLC | 68,323 | $2.97M | 0.82% | −59,361−46.5% | Reduced |
| U.S. Capital Wealth Advisors, LLC | 77,204 | $2.86M | 0.12% | +77,204 | New |
| Salem Investment Counselors Inc | 65,773 | $2.86M | 0.16% | +2,175+3.4% | Added |
| MetLife Investment Management | 65,376 | $2.84M | 0.03% | −1,564−2.3% | Reduced |
| Acadian Asset Management LLC | 63,811 | $2.77M | 0.01% | +30,641+92.4% | Added |
| USS Investment Management Ltd | 63,698 | $2.77M | 0.02% | −15,583−19.7% | Reduced |