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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, Q2 2025

Institutional positions in Iron Mountain Inc as of Jun 30, 2025. 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
1,045
+59 vs. Q1 2025
Shares held
248.8M
+4.03M (+1.6%) vs. Q1 2025
Total value
$25.5B
+$4.48B (+21.3%) vs. Q1 2025
New holders
121
391 more added
Sold out
62
356 more reduced

9 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: 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.

Institutional holdersQ2 2025: 1,045 institutions
Q1 2021: 630 institutionsQ2 2021: 687 institutionsQ3 2021: 711 institutionsQ4 2021: 754 institutionsQ1 2022: 777 institutionsQ2 2022: 767 institutionsQ3 2022: 743 institutionsQ4 2022: 782 institutionsQ1 2023: 790 institutionsQ2 2023: 817 institutionsQ3 2023: 831 institutionsQ4 2023: 891 institutionsQ1 2024: 938 institutionsQ2 2024: 967 institutionsQ3 2024: 1,056 institutionsQ4 2024: 1,067 institutionsQ1 2025: 995 institutionsQ2 2025: 1,045 institutionsQ3 2025: 1,017 institutionsQ4 2025: 1,011 institutionsQ1 2026: 1,090 institutionsQ2 2026: 1,173 institutions
Value heldQ2 2025: $25.5B
Q1 2021: $8.44BQ2 2021: $9.70BQ3 2021: $9.94BQ4 2021: $12.0BQ1 2022: $12.4BQ2 2022: $10.9BQ3 2022: $10.0BQ4 2022: $11.4BQ1 2023: $12.0BQ2 2023: $12.9BQ3 2023: $13.7BQ4 2023: $16.4BQ1 2024: $19.0BQ2 2024: $22.2BQ3 2024: $28.8BQ4 2024: $24.9BQ1 2025: $21.1BQ2 2025: $25.5BQ3 2025: $25.5BQ4 2025: $21.4BQ1 2026: $25.9BQ2 2026: $32.4B
Institutions holding IRM and their total value by quarter
QuarterHoldersValue
Q2 20261,173$32.4B
Q1 20261,090$25.9B
Q4 20251,011$21.4B
Q3 20251,017$25.5B
Q2 20251,045$25.5B
Q1 2025995$21.1B
Q4 20241,067$24.9B
Q3 20241,056$28.8B
Q2 2024967$22.2B
Q1 2024938$19.0B
Q4 2023891$16.4B
Q3 2023831$13.7B
Q2 2023817$12.9B
Q1 2023790$12.0B
Q4 2022782$11.4B
Q3 2022743$10.0B
Q2 2022767$10.9B
Q1 2022777$12.4B
Q4 2021754$12.0B
Q3 2021711$9.94B
Q2 2021687$9.70B
Q1 2021630$8.44B

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q1 2025.

Institutions holding IRM in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Leonteq Securities AG3,400$348.7K0.02%−8,506−71.4%Reduced
Perigon Wealth Management, LLC3,400$348.7K0.01%−328−8.8%Reduced
Parallel Advisors, LLC3,397$348.5K0.01%−355−9.5%Reduced
Retirement Income Solutions, Inc3,350$343.6K0.06%00.0%Unchanged
Aprio Wealth Management, LLC3,350$343.6K0.04%+3,350New
Southland Equity Partners LLC3,331$341.6K0.07%−65−1.9%Reduced
Dynamic Advisor Solutions LLC3,316$340.1K0.01%+241+7.8%Added
Foster & Motley Inc3,318$340.0K0.02%−57−1.7%Reduced
Richmond Investment Services, LLC3,299$338.4K0.07%+3,299New
Evergreen Capital Management LLC3,292$337.7K0.01%−25−0.8%Reduced
Capital Square, LLC3,427$335.8K0.18%+905+35.9%Added
Jacobi Capital Management LLC3,260$334.4K0.02%+119+3.8%Added
Advisors Management Group Inc3,259$334.0K0.06%−50−1.5%Reduced
Mission Wealth Management, LP3,240$332.3K0.01%−201−5.8%Reduced
Sovereign Financial Group, Inc.3,222$330.5K0.07%+77+2.4%Added
Sowell Financial Services LLC3,218$330.1K0.01%−96−2.9%Reduced
Skopos Labs, Inc.3,203$328.5K0.04%+249+8.4%Added
E&G Advisors, LP3,200$328.2K0.09%−300−8.6%Reduced
Cooper Financial Group3,155$323.6K0.04%+113+3.7%Added
Tiaa Trust, National Association3,145$322.6K0.00%+3,145New
CWA Asset Management Group, LLC3,140$322.0K0.01%−507−13.9%Reduced
Relyea Zuckerberg Hanson LLC3,136$321.7K0.04%+208+7.1%Added
Keystone Wealth Services, LLC3,127$320.7K0.08%00.0%Unchanged
Fortitude Family Office, LLC3,118$319.8K0.11%−1,491−32.3%Reduced
SeaCrest Wealth Management, LLC3,112$319.2K0.03%−169−5.2%Reduced
American Investment Services, Inc.3,103$318.3K0.08%00.0%Unchanged
Fortis Capital Management LLC3,093$317.3K0.05%+4+0.1%Added
Crestwood Advisors Group LLC3,047$312.6K0.01%+171+5.9%Added
Clean Yield Group3,022$310.0K0.09%00.0%Unchanged
EntryPoint Capital, LLC3,007$308.4K0.15%−2,304−43.4%Reduced
Asset Planning,Inc3,000$307.7K0.23%00.0%Unchanged
Onyx Bridge Wealth Group LLC2,986$306.6K0.04%−534−15.2%Reduced
IMA Wealth, Inc.2,957$305.6K0.03%+3+0.1%Added
TRUE Private Wealth Advisors2,976$305.2K0.03%+107+3.7%Added
Integrity Alliance, LLC.2,945$302.1K0.02%−3,614−55.1%Reduced
MBB Public Markets I LLC2,937$301.2K0.03%−667−18.5%Reduced
Charter Oak Capital Management, LLC2,931$300.6K0.03%00.0%Unchanged
LaSalle St. Investment Advisors, LLC2,929$300.0K0.08%00.0%Unchanged
Premier Path Wealth Partners, LLC2,887$296.1K0.04%+97+3.5%Added
Cigna Investments Inc2,889$296.0K0.05%−47−1.6%Reduced
Perennial Investment Advisors, LLC2,865$293.9K0.03%+29+1.0%Added
Change Path, LLC2,833$290.6K0.01%−286−9.2%Reduced
Fifth Third Wealth Advisors LLC2,832$290.5K0.01%−182−6.0%Reduced
Beaumont Financial Advisors, LLC2,830$290.3K0.02%−387−12.0%Reduced
Whittier Trust Co2,820$289.2K0.00%−445−13.6%Reduced
Jordan Park Group LLC2,803$287.5K0.02%00.0%Unchanged
ICONIQ Capital, LLC2,792$286.4K0.00%+2,792New
Ameritas Investment Partners, Inc.2,785$285.7K0.01%−74−2.6%Reduced
Destination Wealth Management2,784$285.6K0.01%−862−23.6%Reduced
Wedmont Private Capital2,872$285.0K0.01%+58+2.1%Added
Carnegie Capital Asset Management, LLC2,777$284.8K0.01%00.0%Unchanged
Seelaus Asset Management LLC2,775$284.6K0.25%00.0%Unchanged
NorthCrest Asset Manangement, LLC2,826$284.5K0.01%+2,826New
Stevens Capital Management LP2,769$284.0K0.08%+2,769New
Daymark Wealth Partners, LLC2,767$283.8K0.01%+135+5.1%Added
Howland Capital Management LLC2,727$281.1K0.01%00.0%Unchanged
Syon Capital LLC2,736$280.6K0.02%+2,736New
Jaffetilchin Investment Partners, LLC2,722$279.2K0.02%00.0%Unchanged
XTX Topco Ltd2,702$277.1K0.01%+2,702New
Savvy Advisors, Inc.2,701$277.0K0.02%+33+1.2%Added
Allen Mooney & Barnes Investment Advisors LLC2,700$277.0K0.05%+2+0.1%Added
Richard W. Paul & Associates, LLC2,700$276.9K0.10%−742−21.6%Reduced
Investment House LLC2,700$276.9K0.01%00.0%Unchanged
Allen Investment Management LLC2,696$276.5K0.00%00.0%Unchanged
Assetmark, Inc2,686$275.5K0.00%+1,371+104.3%Added
Sagespring Wealth Partners, LLC2,685$275.4K0.01%+2,685New
Raleigh Capital Management Inc.2,681$275.0K0.12%−810−23.2%Reduced
Keystone Financial Group2,679$274.7K0.02%−502−15.8%Reduced
Aberdeen Wealth Management LLC2,645$271.3K0.18%00.0%Unchanged
Walker Asset Management, LLC2,625$269.2K0.16%+26+1.0%Added
Ameritas Advisory Services, LLC2,623$269.0K0.01%−1,558−37.3%Reduced
Channel Wealth LLC2,621$268.8K0.08%+2+0.1%Added
Keybank National Association2,615$268.2K0.00%−175−6.3%Reduced
Retireful, LLC2,602$266.9K0.18%+2,602New
Advisory Alpha, LLC2,550$261.6K0.01%+2,550New
Samalin Investment Counsel, LLC2,548$261.4K0.10%+22+0.9%Added
Centerpoint Advisory Group2,535$260.0K0.23%00.0%Unchanged
Segment Wealth Management, LLC2,534$259.9K0.02%−44−1.7%Reduced
Seed Wealth Management, Inc.2,530$259.5K0.19%−90−3.4%Reduced
Mather Group, LLC.2,526$259.1K0.00%+59+2.4%Added
Atomi Financial Group, Inc.2,517$258.2K0.01%+2,517New
Iron Financial, LLC2,517$258.2K0.14%+34+1.4%Added
Patton Fund Management, Inc.2,510$257.5K0.06%+2,510New
Nwam LLC2,578$257.4K0.01%+2,578New
Duncan Williams Asset Management, LLC2,504$256.8K0.08%+22+0.9%Added
Larson Financial Group LLC2,449$251.2K0.01%+790+47.6%Added
HBK Sorce Advisory LLC2,419$248.1K0.01%+2,419New
Maven Securities LTD2,406$246.8K0.06%+2,406New
Private Trust Co NA2,405$246.7K0.02%+100+4.3%Added
Geneos Wealth Management Inc.2,399$246.1K0.01%+1,421+145.3%Added
Fielder Capital Group LLC2,390$245.2K0.07%−19−0.8%Reduced
Schmidt P J Investment Management Inc2,360$242.1K0.04%00.0%Unchanged
Brookwood Investment Group LLC2,358$241.8K0.04%−244−9.4%Reduced
Waldron Private Wealth LLC2,338$241.6K0.01%00.0%Unchanged
Bedel Financial Consulting, Inc.2,352$241.3K0.03%00.0%Unchanged
Ausdal Financial Partners, Inc.2,352$241.3K0.02%−94−3.8%Reduced
Diversify Wealth Management, LLC2,595$239.1K0.01%−50−1.9%Reduced
Wealth Alliance2,328$238.8K0.03%+2,328New
Personal Cfo Solutions, LLC2,326$238.6K0.04%+2,326New
Umb Bank N A2,316$237.6K0.00%−214−8.5%Reduced