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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
Channel Wealth LLC2,569$270.0K0.09%−249−8.8%Reduced
Skopos Labs, Inc.2,553$268.3K0.08%+26+1.0%Added
Perennial Investment Advisors, LLC2,545$267.5K0.03%−4−0.2%Reduced
Kovack Advisors, Inc.2,542$267.2K0.03%−13−0.5%Reduced
Savvy Advisors, Inc.2,527$265.6K0.03%+766+43.5%Added
Boothbay Fund Management, LLC2,501$262.9K0.01%+2,501New
Duncan Williams Asset Management, LLC2,466$259.2K0.10%+13+0.5%Added
Dynamic Advisor Solutions LLC2,456$258.2K0.01%−133−5.1%Reduced
Personal Cfo Solutions, LLC2,446$257.1K0.05%−2,567−51.2%Reduced
Nwam LLC2,436$256.1K0.02%00.0%Unchanged
EverSource Wealth Advisors, LLC2,427$255.1K0.01%+751+44.8%Added
Fielder Capital Group LLC2,408$253.1K0.08%−31−1.3%Reduced
Twelve Points Wealth Management LLC2,404$252.7K0.07%−748−23.7%Reduced
Bristlecone Advisors, LLC2,394$251.6K0.02%00.0%Unchanged
Ausdal Financial Partners, Inc.2,349$246.9K0.02%−145−5.8%Reduced
Texas Bank & Trust Co2,334$245.3K0.10%+2,334New
Gsa Capital Partners LLP2,329$245.0K0.02%+2,329New
Wesbanco Bank Inc2,329$244.8K0.01%+345+17.4%Added
Diversify Wealth Management, LLC2,415$244.3K0.02%+2,415New
Bedel Financial Consulting, Inc.2,337$242.9K0.03%+20+0.9%Added
Strategic Financial Concepts, LLC2,308$242.6K0.05%+5+0.2%Added
Mayflower Financial Advisors, LLC2,306$242.4K0.04%+50+2.2%Added
Pegasus Asset Management, Inc.2,300$241.8K0.09%00.0%Unchanged
Ignite Planners, LLC2,286$241.6K0.05%+2+0.1%Added
Scientech Research LLC2,282$239.9K0.07%+2,282New
Carnegie Capital Asset Management, LLC2,277$239.3K0.01%−28−1.2%Reduced
Naples Global Advisors, LLC2,250$238.1K0.02%−200−8.2%Reduced
Commerzbank Aktiengesellschaft2,280$237.0K0.01%+329+16.9%Added
Bingham Private Wealth, LLC2,241$235.6K0.25%+2,241New
Mystic Asset Management, Inc.2,226$234.1K0.06%+10.0%Added
Heritage Wealth Advisors2,222$233.6K0.01%00.0%Unchanged
Financial Sense Advisors, Inc.2,216$232.9K0.08%+2,216New
Community Bank & Trust, Waco, Texas2,200$231.0K0.05%−100−4.3%Reduced
Canandaigua National Bank & Trust Co2,150$226.0K0.02%00.0%Unchanged
HBK Sorce Advisory LLC2,130$223.8K0.01%+39+1.9%Added
Stiles Financial Services Inc2,127$223.6K0.08%00.0%Unchanged
XTX Topco Ltd2,124$223.3K0.02%+2,124New
Anb Bank2,116$222.4K0.10%+2,116New
New Century Financial Group, LLC2,099$221.9K0.09%−23−1.1%Reduced
Clayton Financial Group LLC2,102$220.9K0.08%00.0%Unchanged
Penserra Capital Management LLC2,106$220.0K0.00%+715+51.4%Added
FNY Investment Advisers, LLC2,100$220.0K0.11%+2,100New
Sagespring Wealth Partners, LLC2,086$219.2K0.01%+2,086New
Mission Creek Capital Partners, Inc.2,085$219.2K0.05%+2+0.1%Added
Bridgewater Associates, LP2,074$218.0K0.00%+2,074New
Saxony Capital Management, LLC2,062$216.7K0.19%+8+0.4%Added
Capital Asset Advisory Services LLC2,032$214.8K0.01%00.0%Unchanged
Mosaic Family Wealth Partners, LLC2,040$214.4K0.03%00.0%Unchanged
Moloney Securities Asset Management, LLC2,034$213.8K0.03%−86−4.1%Reduced
Syon Capital LLC2,014$211.7K0.02%−82−3.9%Reduced
Affinity Investment Advisors, LLC2,013$211.6K0.18%00.0%Unchanged
Cullen/Frost Bankers, Inc.2,000$210.2K0.00%−17−0.8%Reduced
Financial Perspectives, Inc2,000$210.2K0.07%00.0%Unchanged
Clear Street Markets LLC2,000$210.2K0.08%+2,000New
Tower Wealth Partners, Inc.1,987$208.9K0.11%+83+4.4%Added
Empower Advisory Group, LLC1,985$208.6K0.00%−90−4.3%Reduced
Clarius Group, LLC1,972$207.3K0.01%−232−10.5%Reduced
Secured Retirement Advisors, LLC1,967$206.8K0.12%+120+6.5%Added
TPG Advisors LLC1,954$205.4K0.16%00.0%Unchanged
Legacy Advisors, LLC1,940$205.3K0.02%+39+2.1%Added
Modera Wealth Management, LLC1,928$202.6K0.00%00.0%Unchanged
Fulton Bank, N.A.1,924$202.2K0.01%00.0%Unchanged
Wolverine Trading, LLC1,948$202.0K0.00%−1,674−46.2%Reduced
Deseret Mutual Benefit Administrators1,919$201.7K0.10%+58+3.1%Added
Coastline Trust Co1,812$190.5K0.02%−3,335−64.8%Reduced
Monetary Management Group Inc1,800$189.2K0.05%00.0%Unchanged
Smartleaf Asset Management LLC1,793$185.9K0.02%+147+8.9%Added
NVWM, LLC1,694$178.1K0.04%00.0%Unchanged
Values First Advisors, Inc.1,682$176.8K0.10%−353−17.3%Reduced
Plato Investment Management Ltd1,661$175.2K0.01%00.0%Unchanged
Central Trust Co1,647$173.1K0.00%−1−0.1%Reduced
Tower View Investment Management & Research LLC1,642$172.6K0.09%+10+0.6%Added
Security National Bank1,619$170.2K0.02%00.0%Unchanged
SJS Investment Consulting Inc.1,600$168.2K0.03%−169−9.6%Reduced
First Financial Corp1,500$157.7K0.07%00.0%Unchanged
Quadrant Capital Group LLC1,480$155.6K0.01%+86+6.2%Added
Muzinich & Co., Inc.1,472$154.7K0.11%+385+35.4%Added
HHM Wealth Advisors, LLC1,471$154.6K0.02%+9+0.6%Added
Livforsakringsbolaget Skandia, Omsesidigt1,461$154.5K0.01%−600−29.1%Reduced
Ci Investments Inc.1,467$154.0K0.00%+98+7.2%Added
Newbridge Financial Services Group, Inc.1,461$153.6K0.04%+71+5.1%Added
Addison Advisors LLC1,391$146.2K0.04%−57−3.9%Reduced
Towarzystwo Funduszy Inwestycyjnych Pzu SA1,380$145.1K0.05%+500+56.8%Added
Toth Financial Advisory Corp1,354$142.3K0.02%00.0%Unchanged
First Horizon Advisors, Inc.1,350$141.9K0.00%00.0%Unchanged
Vision Financial Markets LLC1,350$141.9K0.15%+1,350New
Silvant Capital Management LLC1,292$135.8K0.01%00.0%Unchanged
Transce3nd, LLC1,285$135.1K0.05%+1,285New
Parkside Financial Bank & Trust1,276$134.1K0.02%+1+0.1%Added
Peoples Bank1,235$129.8K0.09%00.0%Unchanged
Eagle Bay Advisors LLC1,161$122.9K0.08%+5+0.4%Added
Carolinas Wealth Consulting LLC1,144$121.0K0.02%−5−0.4%Reduced
Geneos Wealth Management Inc.1,142$120.0K0.00%−20−1.7%Reduced
Lavaca Capital LLC1,101$115.7K0.05%+1,101New
First Command Advisory Services, Inc.1,100$115.6K0.00%00.0%Unchanged
Sentry Investment Management LLC1,090$115.0K0.05%−178−14.0%Reduced
Rosenberg Matthew Hamilton1,075$113.0K0.03%+1,075New
Sittner & Nelson, LLC1,026$107.9K0.05%00.0%Unchanged
Lazard Asset Management LLC1,017$106.0K0.00%+10+1.0%Added
Hexagon Capital Partners LLC1,000$105.1K0.02%00.0%Unchanged