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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 8 sales; 1,173 institutions reported holding it in 13F filings for Q2 2026, worth $32.4B in total; no superinvestor holds it.

13F holders, Q1 2024

Institutional positions in Iron Mountain Inc as of Mar 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
938
+57 vs. Q4 2023
Shares held
237.3M
+3.71M (+1.6%) vs. Q4 2023
Total value
$19.0B
+$2.65B (+16.2%) vs. Q4 2023
New holders
126
310 more added
Sold out
69
328 more reduced

10 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2024: 938 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 heldQ1 2024: $19.0B
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, Q1 2024

Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q4 2023.

Institutions holding IRM in Q1 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Dogwood Wealth Management LLC0$20.00%0Unchanged
Impact Partnership Wealth, LLC0$340.00%−255−100.0%Reduced
Key Financial Inc1$800.00%00.0%Unchanged
Quest Partners LLC1$800.00%+1New
PFG Private Wealth Management, LLC3$2430.00%00.0%Unchanged
MCF Advisors LLC4$3240.00%+4New
Tortoise Investment Management, LLC5$4010.00%00.0%Unchanged
Wolff Wiese Magana LLC5$4020.00%00.0%Unchanged
TFC Financial Management7$5620.00%+1+16.7%Added
Sofos Investments, Inc.10$7770.00%+9+900.0%Added
Aspect Partners, LLC11$8820.00%+3+37.5%Added
Capital Advisors, Ltd. LLC15$1.00K0.00%+11+275.0%Added
Venturi Wealth Management, LLC15$1.20K0.00%00.0%Unchanged
Bokf, NA21$1.67K0.00%+6+40.0%Added
Northwest Investment Counselors, LLC22$1.74K0.00%+22New
Jamison Private Wealth Management, Inc.25$2.01K0.00%+25New
Versant Capital Management, Inc26$2.08K0.00%00.0%Unchanged
Trifecta Capital Advisors, LLC27$2.17K0.00%00.0%Unchanged
Hollencrest Capital Management29$2.33K0.00%00.0%Unchanged
Colonial Trust Advisors30$2.41K0.00%−82−73.2%Reduced
Kelly Financial Services LLC36$2.89K0.00%00.0%Unchanged
Delos Wealth Advisors, LLC36$2.89K0.00%+36New
Pineridge Advisors LLC37$2.97K0.00%−36−49.3%Reduced
Raffa Wealth Management, LLC39$3.13K0.00%00.0%Unchanged
Bruce G. Allen Investments, LLC41$3.29K0.00%−38−48.1%Reduced
Core Wealth Advisors, Inc.43$3.45K0.00%00.0%Unchanged
Asset Dedication, LLC60$5.00K0.00%00.0%Unchanged
Manchester Capital Management LLC66$5.29K0.00%−411−86.2%Reduced
Planning Capital Management Corp72$5.78K0.00%00.0%Unchanged
RFP Financial Group LLC84$6.74K0.00%00.0%Unchanged
Farmers & Merchants Trust Co of Chambersburg PA87$7.00K0.00%+87New
Red Tortoise LLC94$7.54K0.00%00.0%Unchanged
MV Capital Management, Inc.95$7.62K0.00%+1+1.1%Added
New Covenant Trust Company, N.A.98$7.86K0.01%+98New
Hoese & Co LLP100$7.86K0.01%00.0%Unchanged
McIlrath & Eck, LLC100$8.02K0.00%00.0%Unchanged
Ameliora Wealth Management Ltd.100$8.02K0.00%00.0%Unchanged
LRI Investments, LLC106$8.50K0.00%+106New
Moisand Fitzgerald Tamayo, LLC113$9.06K0.00%00.0%Unchanged
Bell Investment Advisors, Inc126$10.1K0.00%+9+7.7%Added
Exchange Traded Concepts, LLC135$10.8K0.00%−241−64.1%Reduced
Park Place Capital Corp141$11.3K0.00%00.0%Unchanged
Carmichael Hill & Associates, Inc.143$11.5K0.00%00.0%Unchanged
Optiver Holding B.V.152$12.2K0.00%+152New
Tidemark, LLC154$12.4K0.01%00.0%Unchanged
Kozak & Associates, Inc.165$13.5K0.00%+2+1.2%Added
SRS Capital Advisors, Inc.169$13.5K0.00%−15,026−98.9%Reduced
Chesapeake Asset Management LLC170$13.6K0.01%00.0%Unchanged
Pin Oak Investment Advisors Inc174$14.0K0.01%00.0%Unchanged
Coston, McIsaac & Partners181$14.0K0.00%+2+1.1%Added
Tucker Asset Management LLC180$14.4K0.00%00.0%Unchanged
HHM Wealth Advisors, LLC184$14.8K0.00%00.0%Unchanged
Assetmark, Inc196$15.7K0.00%+20+11.4%Added
Rise Advisors, LLC197$15.8K0.01%+145+278.8%Added
Clear Street Markets LLC200$16.0K0.01%−1,100−84.6%Reduced
Farmers & Merchants Investments Inc205$16.4K0.00%00.0%Unchanged
Chilton Capital Management LLC205$16.4K0.00%00.0%Unchanged
Zions Bancorporation, N.A.229$18.4K0.00%00.0%Unchanged
Quent Capital, LLC240$19.3K0.00%00.0%Unchanged
Old Point Trust & Financial Services N A250$20.1K0.01%+250New
Naples Money Management LLC254$20.4K0.02%−2,018−88.8%Reduced
Livforsakringsbolaget Skandia, Omsesidigt261$21.1K0.00%00.0%Unchanged
Institutional & Family Asset Management, LLC273$21.9K0.00%00.0%Unchanged
Covestor Ltd285$23.0K0.01%+33+13.1%Added
Central Pacific Bank - Trust Division292$23.2K0.00%+292New
Fernwood Investment Management, LLC290$23.3K0.01%+290New
IAG Wealth Partners, LLC295$23.7K0.01%00.0%Unchanged
Trust Co of Vermont300$24.1K0.00%00.0%Unchanged
Dunhill Financial, LLC300$24.1K0.02%+3+1.0%Added
WR Wealth Planners, LLC305$24.5K0.01%+305New
Whittier Trust Co of Nevada Inc329$26.4K0.00%00.0%Unchanged
Loomis Sayles & Co L P355$28.0K0.00%+102+40.3%Added
Piscataqua Savings Bank353$28.3K0.02%00.0%Unchanged
Walleye Capital LLC356$28.6K0.00%+356New
GW&K Investment Management, LLC357$29.0K0.00%−12−3.3%Reduced
Quarry LP387$31.0K0.01%+328+555.9%Added
Canton Hathaway, LLC400$32.0K0.01%00.0%Unchanged
Barrett & Company, Inc.400$32.1K0.02%00.0%Unchanged
AdvisorNet Financial, Inc416$33.4K0.00%00.0%Unchanged
PFS Partners, LLC419$33.6K0.02%00.0%Unchanged
Bartlett & Co. Wealth Management LLC440$35.6K0.00%00.0%Unchanged
CVA Family Office, LLC455$36.5K0.01%00.0%Unchanged
Headlands Technologies LLC471$37.8K0.01%+471New
Hanson & Doremus Investment Management475$38.0K0.01%00.0%Unchanged
Continuum Advisory, LLC482$38.4K0.01%+482New
Natixis483$38.7K0.00%−33,709−98.6%Reduced
Hazlett, Burt & Watson, Inc.500$40.0K0.02%00.0%Unchanged
GPS Wealth Strategies Group, LLC500$40.1K0.01%−631−55.8%Reduced
Heritage Wealth Advisors500$40.1K0.00%00.0%Unchanged
Transcendent Capital Group LLC510$40.9K0.02%00.0%Unchanged
Muzinich & Co., Inc.587$41.1K0.04%00.0%Unchanged
Sunbelt Securities, Inc.517$41.5K0.00%00.0%Unchanged
Compass Wealth Management LLC525$42.1K0.01%00.0%Unchanged
Webster Bank, N. A.557$44.7K0.00%00.0%Unchanged
AllSquare Wealth Management LLC559$44.8K0.03%−153−21.5%Reduced
Main Street Group, LTD570$45.5K0.02%+4+0.7%Added
North Star Investment Management Corp.570$45.7K0.00%−400−41.2%Reduced
Financial Avengers, Inc.580$46.1K0.02%+6+1.0%Added
Annis Gardner Whiting Capital Advisors, LLC585$47.3K0.02%−2,059−77.9%Reduced
Caitlin John, LLC593$47.6K0.04%−92−13.4%Reduced