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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 2023

Institutional positions in Iron Mountain Inc as of Dec 31, 2023. 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
891
+72 vs. Q3 2023
Shares held
233.7M
+4.86M (+2.1%) vs. Q3 2023
Total value
$16.4B
+$2.74B (+20.1%) vs. Q3 2023
New holders
136
277 more added
Sold out
64
346 more reduced

12 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2023: 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 2023: 891 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 2023: $16.4B
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 2023

Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q3 2023.

Institutions holding IRM in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Mission Creek Capital Partners, Inc.2,972$208.0K0.05%+2,972New
Whittier Trust Co2,978$208.4K0.00%−250−7.7%Reduced
Clean Yield Group3,000$209.9K0.09%00.0%Unchanged
Channel Wealth LLC3,000$209.9K0.10%+3,000New
Change Path, LLC3,004$210.0K0.01%+3,004New
Miracle Mile Advisors, LLC3,006$210.4K0.01%+3,006New
Pine Valley Investments Ltd Liability Co3,025$211.7K0.02%+3,025New
Landscape Capital Management, L.L.C.3,044$213.0K0.02%+3,044New
Monticello Wealth Management, LLC3,065$214.5K0.02%−1,320−30.1%Reduced
XML Financial, LLC3,068$214.7K0.02%+3,068New
Boston Financial Mangement LLC3,100$216.9K0.01%+3,100New
Cigna Investments Inc3,095$217.0K0.04%+3,095New
Cresset Asset Management, LLC3,106$217.4K0.00%+3,106New
Wiley Bros.-Aintree Capital, LLC3,110$217.4K0.05%+3,110New
Relyea Zuckerberg Hanson LLC3,121$218.4K0.04%+3,121New
Sovereign Financial Group, Inc.3,141$219.8K0.07%+3,141New
Westpac Banking Corp3,143$219.9K0.02%00.0%Unchanged
Kovitz Investment Group Partners, LLC3,191$223.3K0.00%+3,191New
Cypress Capital Group3,200$223.9K0.03%+3,200New
Apriem Advisors3,200$223.9K0.03%+3,200New
Geller Advisors LLC3,182$224.7K0.02%−323−9.2%Reduced
Meiji Yasuda Asset Management Co Ltd.3,214$224.9K0.01%−81,159−96.2%Reduced
Ameritas Investment Partners, Inc.3,245$227.1K0.01%−332−9.3%Reduced
Keystone Wealth Services, LLC3,258$228.0K0.08%+3,258New
Jacobi Capital Management LLC3,288$230.1K0.02%+3,288New
Community Bank & Trust, Waco, Texas3,300$231.0K0.06%+3,300New
Advisor Resource Council3,305$231.3K0.03%+3,305New
Advisors Management Group Inc3,309$232.0K0.06%−189−5.4%Reduced
Retirement Income Solutions, Inc3,350$234.4K0.06%−650−16.3%Reduced
Huntington National Bank3,356$234.9K0.00%−1,235−26.9%Reduced
International Assets Investment Management, LLC3,388$237.1K0.03%+3,388New
Power Corp of Canada3,416$239.1K0.02%+3,416New
Davis R M Inc3,418$239.2K0.01%00.0%Unchanged
Ballentine Partners, LLC3,446$241.2K0.00%+3,446New
Lokken Investment Group LLC3,474$243.1K0.14%00.0%Unchanged
CAPROCK Group, Inc.3,449$243.6K0.02%+3,449New
Buckingham Capital Management, Inc.3,483$243.7K0.03%+3,483New
Dakota Wealth Management3,495$244.6K0.01%−1,041−22.9%Reduced
Robinson Smith Wealth Advisors LLC3,500$244.9K0.24%+3,500New
Philadelphia Trust Co3,500$245.0K0.02%00.0%Unchanged
Nations Financial Group Inc,3,524$246.6K0.02%−265−7.0%Reduced
Lebenthal Global Advisors, LLC3,538$247.6K0.06%+3,538New
Beaumont Financial Advisors, LLC3,541$247.8K0.02%−164−4.4%Reduced
Panagora Asset Management Inc3,610$252.6K0.00%−87−2.4%Reduced
E&G Advisors, LP3,625$253.7K0.09%−2,500−40.8%Reduced
Strategic Blueprint, LLC3,625$253.7K0.02%+11+0.3%Added
Triasima Portfolio Management inc.3,700$258.9K0.02%−500−11.9%Reduced
Private Trust Co NA3,738$261.6K0.03%+17+0.5%Added
Walker Asset Management, LLC3,754$262.7K0.19%+3,754New
Grey Street Capital, LLC3,731$263.5K0.13%00.0%Unchanged
Inspire Trust Co, N.A.3,794$265.5K0.27%+3,794New
Core Wealth Partners LLC3,796$265.7K0.22%+287+8.2%Added
Ledgewood Wealth Advisors, LLC3,806$266.3K0.25%+3,806New
Sigma Planning Corp3,809$266.6K0.02%−3,667−49.1%Reduced
Aire Advisors, LLC3,828$268.1K0.07%+38+1.0%Added
Onyx Bridge Wealth Group LLC3,838$268.6K0.05%+26+0.7%Added
Fisher Asset Management, LLC3,867$270.7K0.00%+3,867New
Park National Corp3,905$273.3K0.01%00.0%Unchanged
Raleigh Capital Management Inc.3,914$273.9K0.13%+83+2.2%Added
Perigon Wealth Management, LLC3,926$274.7K0.01%+406+11.5%Added
Stephens Inc3,938$275.6K0.00%−679−14.7%Reduced
FDx Advisors, Inc.3,948$276.0K0.02%−105−2.6%Reduced
Sachetta, LLC3,993$279.5K0.13%+3,993New
Citizens Business Bank4,000$279.9K0.06%00.0%Unchanged
Consolidated Planning Corp4,001$280.0K0.05%+4,001New
Advisors Capital Management, LLC4,024$282.0K0.01%+15+0.4%Added
Cetera Trust Company, N.A4,050$283.4K0.18%+4,050New
Howland Capital Management LLC4,016$283.7K0.01%00.0%Unchanged
Brinker Capital Investments, LLC4,225$287.5K0.00%−118−2.7%Reduced
Orion Portfolio Solutions, LLC4,225$287.5K0.00%−118−2.7%Reduced
Bogart Wealth, LLC4,109$287.5K0.02%00.0%Unchanged
NEOS Investment Management LLC4,124$288.6K0.03%+4,124New
Norris Financial Group, LLC4,136$289.4K0.18%+4,136New
Koshinski Asset Management, Inc.4,175$292.2K0.04%−118−2.7%Reduced
Curi Capital4,191$293.3K0.04%−6−0.1%Reduced
Nelson, Van Denburg & Campbell Wealth Management Group, LLC4,220$295.4K0.02%+39+0.9%Added
Verdence Capital Advisors LLC4,228$295.9K0.03%+17+0.4%Added
TrinityPoint Wealth, LLC4,260$298.1K0.05%−119−2.7%Reduced
TRUE Private Wealth Advisors4,322$302.4K0.04%−20.0%Reduced
IFP Advisors, Inc4,349$304.3K0.01%−173−3.8%Reduced
Horizon Investments, LLC4,359$305.0K0.01%−28−0.6%Reduced
Prossimo Advisors, LLC4,385$307.0K0.65%−180−3.9%Reduced
Edmp, Inc.4,387$307.0K0.28%00.0%Unchanged
Crown Wealth Group, LLC4,390$307.2K0.18%+240+5.8%Added
Armstrong Advisory Group, Inc4,483$313.7K0.03%00.0%Unchanged
Personal Cfo Solutions, LLC4,499$314.9K0.05%−199−4.2%Reduced
Wulff, Hansen & Co.4,520$316.3K0.35%−200−4.2%Reduced
Welch Group, LLC4,531$317.1K0.02%00.0%Unchanged
Goldstone Financial Group, LLC4,558$319.0K0.08%−262−5.4%Reduced
Federated Hermes, Inc.4,599$321.8K0.00%+179+4.0%Added
Wealthcare Advisory Partners LLC4,605$322.2K0.01%−1,449−23.9%Reduced
Scotia Capital Inc.4,610$322.5K0.00%−10−0.2%Reduced
Richard W. Paul & Associates, LLC4,624$323.6K0.14%−190−3.9%Reduced
Concurrent Investment Advisors, LLC4,691$328.2K0.02%+4,691New
High Net Worth Advisory Group LLC4,692$328.3K0.12%00.0%Unchanged
CX Institutional4,728$330.9K0.02%−8−0.2%Reduced
Teamwork Financial Advisors, LLC4,741$331.8K0.06%−5,019−51.4%Reduced
Cornerstone Wealth Management, LLC4,743$331.9K0.03%−99−2.0%Reduced
Quantinno Capital Management LP4,766$334.0K0.01%+4,766New
Toroso Investments, LLC4,795$335.6K0.01%+335+7.5%Added