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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, Q4 2024

Institutional positions in Iron Mountain Inc as of Dec 31, 2024. 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
1,067
+30 vs. Q3 2024
Shares held
237.3M
−4.59M (−1.9%) vs. Q3 2024
Total value
$24.9B
−$3.75B (−13.1%) vs. Q3 2024
New holders
139
364 more added
Sold out
109
409 more reduced

19 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2024: 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 holdersQ4 2024: 1,067 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 heldQ4 2024: $24.9B
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, Q4 2024

Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q3 2024.

Institutions holding IRM in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
RMB Capital Management, LLC3,813$400.8K0.01%−10.0%Reduced
Ledgewood Wealth Advisors, LLC3,806$400.0K0.26%00.0%Unchanged
Citizens Business Bank3,800$399.4K0.07%−200−5.0%Reduced
Highland Capital Management Fund Advisors, L.P.3,800$399.4K0.05%00.0%Unchanged
Strategic Blueprint, LLC3,798$399.2K0.02%+78+2.1%Added
Parallel Advisors, LLC3,765$395.8K0.01%+60+1.6%Added
Crown Wealth Group, LLC3,758$395.0K0.16%+12+0.3%Added
RMR Wealth Builders3,752$394.4K0.04%−139−3.6%Reduced
Leonteq Securities AG3,730$392.1K0.04%+3,421+1,107.1%Added
E&G Advisors, LP3,700$388.9K0.11%00.0%Unchanged
Aire Advisors, LLC3,696$388.5K0.08%−177−4.6%Reduced
International Assets Investment Management, LLC3,689$386.4K0.03%−444,955−99.2%Reduced
Onyx Bridge Wealth Group LLC3,661$385.1K0.06%+17+0.5%Added
Destination Wealth Management3,646$383.2K0.01%−61−1.6%Reduced
Cetera Trust Company, N.A3,625$381.0K0.25%−225−5.8%Reduced
Blue Rock Wealth Management LLC3,600$378.4K0.40%+3,600New
Trustmark National Bank Trust Department3,593$377.7K0.03%−448−11.1%Reduced
Stevens Capital Management LP3,564$375.0K0.15%+1,806+102.7%Added
Palacios Wealth Management, LLC3,525$373.3K0.40%+3,525New
Raleigh Capital Management Inc.3,532$371.3K0.14%−771−17.9%Reduced
TRUE Private Wealth Advisors3,532$371.2K0.05%00.0%Unchanged
Philadelphia Trust Co3,500$368.0K0.03%00.0%Unchanged
Buckingham Capital Management, Inc.3,483$366.1K0.04%00.0%Unchanged
Lokken Investment Group LLC3,474$365.2K0.16%00.0%Unchanged
Richard W. Paul & Associates, LLC3,469$364.6K0.13%−656−15.9%Reduced
Callan Family Office, LLC3,461$363.8K0.02%+3,461New
Severin Investments, LLC3,449$362.6K0.36%+3,449New
Mission Wealth Management, LP3,445$362.1K0.01%−36−1.0%Reduced
Natural Investments, LLC3,439$361.0K0.10%+3,439New
LaSalle St. Investment Advisors, LLC3,414$358.0K0.11%+3,414New
Foster & Motley Inc3,400$357.0K0.02%−320−8.6%Reduced
Southland Equity Partners LLC3,391$356.5K0.08%−541−13.8%Reduced
Retirement Income Solutions, Inc3,350$352.1K0.07%00.0%Unchanged
Chicago Partners Investment Group LLC3,396$349.3K0.01%−82−2.4%Reduced
Cresset Asset Management, LLC3,317$348.7K0.00%−71−2.1%Reduced
Advisors Management Group Inc3,309$348.0K0.08%00.0%Unchanged
Geller Advisors LLC3,288$347.9K0.02%−85−2.5%Reduced
Huntington National Bank3,309$347.8K0.00%−421−11.3%Reduced
Howland Capital Management LLC3,279$347.0K0.02%00.0%Unchanged
Sigma Planning Corp3,272$343.9K0.01%−1,329−28.9%Reduced
Beaumont Financial Advisors, LLC3,233$339.8K0.03%−208−6.0%Reduced
Johnson Investment Counsel Inc3,231$339.6K0.00%+1,188+58.1%Added
Miracle Mile Advisors, LLC3,215$337.9K0.01%+84+2.7%Added
TrinityPoint Wealth, LLC3,194$335.7K0.05%−44−1.4%Reduced
Stratos Wealth Partners, LTD.3,194$335.7K0.00%+8+0.3%Added
Keystone Financial Group3,173$333.5K0.03%−1,048−24.8%Reduced
Whittier Trust Co3,157$331.8K0.00%+144+4.8%Added
Sovereign Financial Group, Inc.3,142$330.3K0.08%00.0%Unchanged
Jacobi Capital Management LLC3,138$329.9K0.02%−162−4.9%Reduced
Keystone Wealth Services, LLC3,127$328.7K0.09%+77+2.5%Added
Core Wealth Partners LLC3,127$328.6K0.19%−790−20.2%Reduced
Wedmont Private Capital3,247$328.5K0.02%+170+5.5%Added
Yeomans Consulting Group, Inc.3,104$326.3K0.12%−1,627−34.4%Reduced
American Investment Services, Inc.3,103$326.2K0.06%00.0%Unchanged
Prospera Financial Services Inc3,091$325.1K0.01%+283+10.1%Added
Crestwood Advisors Group LLC3,071$322.8K0.01%+81+2.7%Added
Evergreen Capital Management LLC3,034$321.0K0.01%00.0%Unchanged
Meeder Advisory Services, Inc.3,042$319.8K0.02%−105−3.3%Reduced
Clean Yield Group3,042$319.7K0.10%00.0%Unchanged
OneAscent Wealth Management LLC3,039$319.0K0.13%−726−19.3%Reduced
Apriem Advisors3,000$315.3K0.04%00.0%Unchanged
Asset Planning,Inc3,000$315.3K0.24%+3,000New
Park Square Financial Group, LLC2,991$314.4K0.22%+2,991New
Cigna Investments Inc2,989$314.0K0.06%−54−1.8%Reduced
IMA Wealth, Inc.2,954$312.6K0.04%00.0%Unchanged
Intrua Financial, LLC2,954$310.5K0.05%−1,737−37.0%Reduced
Cooper Financial Group2,952$310.3K0.04%+140+5.0%Added
Capital City Trust Co2,940$309.0K0.08%00.0%Unchanged
Aristeia Capital LLC2,926$307.6K0.01%−112−3.7%Reduced
Charter Oak Capital Management, LLC2,924$307.3K0.03%+4+0.1%Added
Relyea Zuckerberg Hanson LLC2,918$306.8K0.04%+2+0.1%Added
Fifth Third Wealth Advisors LLC2,899$304.7K0.02%−29−1.0%Reduced
Alethea Capital Management, LLC2,884$303.1K0.26%+2,884New
Cynosure Management, LLC2,864$301.0K0.04%+2,864New
Schmidt P J Investment Management Inc2,860$300.6K0.05%00.0%Unchanged
Ameritas Investment Partners, Inc.2,859$300.5K0.01%−112−3.8%Reduced
Private Trust Co NA2,854$300.0K0.03%−372−11.5%Reduced
LMR Partners LLP2,847$299.2K0.01%−1,039−26.7%Reduced
Schechter Investment Advisors, LLC2,846$299.1K0.02%−67−2.3%Reduced
Premier Path Wealth Partners, LLC2,844$298.9K0.05%+106+3.9%Added
Cypress Capital Group2,835$298.0K0.04%00.0%Unchanged
NorthCrest Asset Manangement, LLC2,826$297.0K0.01%00.0%Unchanged
Daymark Wealth Partners, LLC2,815$295.9K0.01%+81+3.0%Added
Jordan Park Group LLC2,803$294.6K0.02%00.0%Unchanged
Clark Capital Management Group, Inc.2,776$291.8K0.00%+518+22.9%Added
BSW Wealth Partners2,723$286.2K0.04%+501+22.5%Added
Jaffetilchin Investment Partners, LLC2,722$286.1K0.02%−5,197−65.6%Reduced
Capstone Investment Advisors, LLC2,719$285.8K0.00%+2,718+271,800.0%Added
Investment House LLC2,700$283.8K0.02%00.0%Unchanged
Seelaus Asset Management LLC2,700$283.8K0.26%00.0%Unchanged
Allen Investment Management LLC2,696$283.4K0.00%00.0%Unchanged
Aberdeen Wealth Management LLC2,645$278.0K0.19%00.0%Unchanged
Seed Wealth Management, Inc.2,620$275.4K0.22%00.0%Unchanged
Segment Wealth Management, LLC2,600$273.3K0.02%00.0%Unchanged
Robinson Smith Wealth Advisors LLC2,600$273.3K0.23%00.0%Unchanged
Allen Mooney & Barnes Investment Advisors LLC2,597$273.0K0.05%+10.0%Added
Centerpoint Advisory Group2,585$271.7K0.26%+2,585New
Mather Group, LLC.2,582$271.4K0.00%+113+4.6%Added
Great Valley Advisor Group, Inc.2,580$271.1K0.01%−99−3.7%Reduced
Warm Springs Advisors Inc.2,574$270.6K0.25%+2,574New