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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, Q3 2023

Institutional positions in Iron Mountain Inc as of Sep 30, 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
831
+22 vs. Q2 2023
Shares held
229.7M
+6.17M (+2.8%) vs. Q2 2023
Total value
$13.7B
+$977.9M (+7.7%) vs. Q2 2023
New holders
88
289 more added
Sold out
66
315 more reduced

8 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2023: 831 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 heldQ3 2023: $13.7B
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, Q3 2023

Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q2 2023.

Institutions holding IRM in Q3 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Capital Advisors, Ltd. LLC4$00.00%00.0%Unchanged
Key Financial Inc1$590.00%00.0%Unchanged
Bokf, NA3$1770.00%−80−96.4%Reduced
Perkins Coie Trust Co4$2370.00%+4New
Carmel Capital Partners, LLC4$2380.00%+4New
Tortoise Investment Management, LLC5$2970.00%+5New
Wolff Wiese Magana LLC5$2980.00%00.0%Unchanged
Crewe Advisors LLC7$4170.00%+2+40.0%Added
Cornerstone Planning Group LLC15$8920.00%+15New
Baker Avenue Asset Management, LP17$1.01K0.00%00.0%Unchanged
JJJ Advisors Inc.19$1.13K0.00%00.0%Unchanged
Versant Capital Management, Inc19$1.13K0.00%00.0%Unchanged
Stone House Investment Management, LLC20$1.19K0.00%+20New
Northwest Investment Counselors, LLC21$1.26K0.00%+21New
NewSquare Capital LLC24$1.43K0.00%+24New
Caldwell Sutter Capital, Inc.25$1.49K0.00%−25−50.0%Reduced
Trifecta Capital Advisors, LLC27$1.61K0.00%00.0%Unchanged
Hollencrest Capital Management29$1.72K0.00%00.0%Unchanged
Macroview Investment Management LLC33$1.96K0.00%+33New
Kelly Financial Services LLC36$2.14K0.00%00.0%Unchanged
Raffa Wealth Management, LLC39$2.32K0.00%00.0%Unchanged
DecisionPoint Financial, LLC41$2.44K0.00%+41New
SkyView Investment Advisors, LLC45$3.00K0.00%00.0%Unchanged
Rise Advisors, LLC52$3.08K0.00%+1+2.0%Added
Quarry LP67$3.98K0.00%−12−15.2%Reduced
Bartlett & Co. LLC70$4.00K0.00%00.0%Unchanged
Asset Dedication, LLC60$4.00K0.00%+60New
Bartlett & Co. Wealth Management LLC70$4.21K0.00%00.0%Unchanged
MV Capital Management, Inc.83$4.93K0.00%00.0%Unchanged
Red Tortoise LLC94$5.59K0.00%00.0%Unchanged
McIlrath & Eck, LLC100$5.95K0.00%00.0%Unchanged
Ameliora Wealth Management Ltd.100$5.95K0.00%00.0%Unchanged
Hoese & Co LLP100$5.95K0.01%00.0%Unchanged
Ronald Blue Trust, Inc.120$6.00K0.00%+24+25.0%Added
Colonial Trust Advisors112$6.66K0.00%−3−2.6%Reduced
Moisand Fitzgerald Tamayo, LLC113$6.72K0.00%00.0%Unchanged
Nemes Rush Group LLC113$6.72K0.00%+113New
Tradition Wealth Management, LLC122$7.00K0.00%+1+0.8%Added
Bell Investment Advisors, Inc120$7.13K0.00%−6−4.8%Reduced
Earnest Partners LLC133$7.91K0.00%00.0%Unchanged
Benjamin Edwards Inc138$8.00K0.00%+1+0.7%Added
Anchor Investment Management, LLC135$8.03K0.00%00.0%Unchanged
Park Place Capital Corp141$8.38K0.00%00.0%Unchanged
Carmichael Hill & Associates, Inc.143$8.50K0.00%00.0%Unchanged
Sandy Spring Bank148$8.77K0.00%+101+214.9%Added
Assetmark, Inc154$9.13K0.00%+29+23.2%Added
Kozak & Associates, Inc.162$9.39K0.00%+4+2.5%Added
Provence Wealth Management Group159$9.47K0.01%+159New
Coston, McIsaac & Partners177$10.0K0.00%+2+1.1%Added
Chesapeake Asset Management LLC170$10.1K0.01%00.0%Unchanged
Prestige Wealth Management Group LLC179$10.8K0.00%00.0%Unchanged
HHM Wealth Advisors, LLC184$10.9K0.00%00.0%Unchanged
Sturgeon Ventures LLP185$11.0K0.01%00.0%Unchanged
Farmers & Merchants Investments Inc205$12.2K0.00%+10+5.1%Added
Chilton Capital Management LLC205$12.2K0.00%00.0%Unchanged
JFS Wealth Advisors, LLC220$13.1K0.00%00.0%Unchanged
Zions Bancorporation, N.A.229$13.6K0.00%00.0%Unchanged
Quent Capital, LLC240$14.3K0.00%00.0%Unchanged
Covestor Ltd246$15.0K0.01%−5−2.0%Reduced
Livforsakringsbolaget Skandia, Omsesidigt261$15.7K0.00%00.0%Unchanged
Loomis Sayles & Co L P269$16.0K0.00%−832−75.6%Reduced
Institutional & Family Asset Management, LLC273$16.3K0.00%00.0%Unchanged
GW&K Investment Management, LLC279$17.0K0.00%+2+0.7%Added
First Personal Financial Services290$17.2K0.00%−100−25.6%Reduced
Desjardins Global Asset Management Inc.293$17.4K0.00%−952−76.5%Reduced
IAG Wealth Partners, LLC295$17.5K0.00%00.0%Unchanged
WR Wealth Planners, LLC300$17.8K0.01%00.0%Unchanged
Sofos Investments, Inc.306$17.8K0.00%+249+436.8%Added
Clear Street Markets LLC300$18.0K0.01%−781−72.2%Reduced
Capital Analysts, LLC318$19.0K0.00%+2+0.6%Added
Whittier Trust Co of Nevada Inc329$19.6K0.00%00.0%Unchanged
Piscataqua Savings Bank353$21.0K0.02%00.0%Unchanged
Stonebridge Capital Advisors LLC363$21.6K0.00%00.0%Unchanged
First Community Trust NA385$22.9K0.03%00.0%Unchanged
Glassman Wealth Services393$23.4K0.00%+74+23.2%Added
AdvisorNet Financial, Inc400$23.8K0.00%−274−40.7%Reduced
Canton Hathaway, LLC400$24.0K0.01%+400New
EverSource Wealth Advisors, LLC404$24.0K0.00%+400+10,000.0%Added
Harbor Investment Advisory, LLC417$24.8K0.00%+200+92.2%Added
PFS Partners, LLC419$24.9K0.02%00.0%Unchanged
Manchester Capital Management LLC425$25.3K0.00%+419+6,983.3%Added
Johnson Financial Group, Inc.430$25.6K0.00%00.0%Unchanged
Ci Investments Inc.443$26.0K0.00%+35+8.6%Added
Trust Co of Vermont450$26.8K0.00%00.0%Unchanged
Baystate Wealth Management LLC464$27.6K0.00%+5+1.1%Added
Hanson & Doremus Investment Management475$28.0K0.01%+475New
Barrett & Company, Inc.500$29.7K0.02%00.0%Unchanged
Hazlett, Burt & Watson, Inc.500$30.0K0.02%00.0%Unchanged
Sunbelt Securities, Inc.516$30.7K0.00%00.0%Unchanged
Compass Wealth Management LLC525$31.2K0.01%00.0%Unchanged
Webster Bank, N. A.557$33.1K0.00%00.0%Unchanged
Financial Avengers, Inc.568$33.7K0.02%+6+1.1%Added
Bank of New Hampshire575$34.2K0.01%00.0%Unchanged
Muzinich & Co., Inc.587$34.9K0.03%+587New
Lindbrook Capital, LLC607$36.1K0.00%+42+7.4%Added
West Tower Group, LLC627$37.3K0.02%−458−42.2%Reduced
TFC Financial Management630$37.5K0.01%+630New
GeoWealth Management, LLC645$38.0K0.00%+329+104.1%Added
Tucker Asset Management LLC655$38.9K0.01%00.0%Unchanged
Newbridge Financial Services Group, Inc.659$39.2K0.02%+4+0.6%Added