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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, Q2 2021

Institutional positions in Iron Mountain Inc as of Jun 30, 2021. 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
687
+60 vs. Q1 2021
Shares held
229.0M
+3.86M (+1.7%) vs. Q1 2021
Total value
$9.70B
+$1.37B (+16.4%) vs. Q1 2021
New holders
112
253 more added
Sold out
52
218 more reduced

3 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2021: 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 holdersQ2 2021: 687 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 heldQ2 2021: $9.70B
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, Q2 2021

Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q1 2021.

Institutions holding IRM in Q2 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Winton Group Ltd11,908$504.0K0.03%−9,125−43.4%Reduced
Krane Funds Advisors LLC11,893$503.0K0.02%−208−1.7%Reduced
Winfield Associates, Inc.11,880$503.0K0.19%−100−0.8%Reduced
BTC Capital Management, Inc.11,745$497.0K0.06%−6,867−36.9%Reduced
Versor Investments LP11,689$495.0K0.02%−5,271−31.1%Reduced
E. Ohman J:or Asset Management AB11,653$493.2K0.02%00.0%Unchanged
Carroll Financial Associates, Inc.11,617$491.0K0.03%+36+0.3%Added
World Asset Management Inc11,516$487.0K0.04%−618−5.1%Reduced
Alpha Paradigm Partners, LLC11,405$483.0K0.18%+3,512+44.5%Added
Bailard, Inc.11,396$482.0K0.02%+775+7.3%Added
Sawtooth Solutions, LLC11,319$479.0K0.09%+1,926+20.5%Added
Delta Capital Management LLC11,230$475.0K0.29%−970−8.0%Reduced
Alpha Cubed Investments, LLC11,168$473.0K0.03%00.0%Unchanged
Lombard Odier Asset Management (Switzerland) SA10,945$463.0K0.02%+10,945New
Aigen Investment Management, LP10,860$460.0K0.08%+10,860New
Kovack Advisors, Inc.10,440$442.0K0.05%−221−2.1%Reduced
Catalyst Capital Advisors LLC10,370$439.0K0.02%00.0%Unchanged
Demars Financial Group, LLC10,246$434.0K0.26%+30+0.3%Added
Atlantic Union Bankshares Corp10,090$427.0K0.04%−637−5.9%Reduced
Plimoth Trust Co LLC10,078$427.0K0.12%00.0%Unchanged
Nomura Holdings Inc10,070$426.0K0.00%+10,070New
Southport Management, L.L.C.10,000$423.2K1.43%−5,000−33.3%Reduced
Illinois Municipal Retirement Fund9,835$416.0K0.02%+9,835New
B. Riley Wealth Management, Inc.9,771$414.0K0.05%+800+8.9%Added
Proequities, Inc.9,597$412.0K0.03%+136+1.4%Added
Lincoln National Corp9,724$412.0K0.01%+159+1.7%Added
Atom Investors LP9,691$410.0K0.09%+9,691New
Essex Financial Services, Inc.11,051$409.0K0.06%00.0%Unchanged
Vident Investment Advisory, LLC9,677$409.0K0.01%+9,677New
Corrado Advisors, LLC9,620$407.0K0.25%+17+0.2%Added
Ethic Inc.9,624$407.0K0.05%+4,062+73.0%Added
Lee Danner & Bass Inc9,608$407.0K0.04%+9,608New
Detalus Advisors, LLC9,528$403.0K0.21%−11,506−54.7%Reduced
TD Ameritrade Investment Management, LLC9,534$403.0K0.00%+545+6.1%Added
Investors Research Corp9,479$401.0K0.14%00.0%Unchanged
Armor Investment Advisors, LLC9,427$399.0K0.24%−566−5.7%Reduced
Centaurus Financial, Inc.9,283$393.0K0.03%−478−4.9%Reduced
Wolverine Trading, LLC9,234$391.0K0.01%−5,274−36.4%Reduced
Impax Asset Management Group plc9,239$391.0K0.00%−10.0%Reduced
Federation des caisses Desjardins du Quebec9,129$386.2K0.00%+1,858+25.6%Added
Merit Financial Group, LLC9,100$385.0K0.04%00.0%Unchanged
GM Advisory Group, Inc.8,925$378.0K0.04%−2,000−18.3%Reduced
Tectonic Advisors LLC8,892$376.0K0.08%+863+10.7%Added
Raymond James Trust N.A.8,831$374.0K0.01%−6,259−41.5%Reduced
Cigna Investments Inc8,817$372.0K0.03%−1,400−13.7%Reduced
CenterStar Asset Management, LLC–$369.0K0.40%–New
Invst, LLC8,400$364.0K0.06%+1,555+22.7%Added
Augustine Asset Management Inc8,543$362.0K0.19%+8,543New
Founders Financial Alliance, LLC8,538$361.0K0.16%+1,232+16.9%Added
Wetherby Asset Management Inc8,481$359.0K0.02%+8,481New
H&H Retirement Design & Management INC8,082$355.0K0.22%+110+1.4%Added
Atwood & Palmer Inc8,330$353.0K0.03%00.0%Unchanged
Dark Forest Capital Management LP8,342$353.0K0.15%+8,342New
Verition Fund Management LLC8,273$350.0K0.01%+8,273New
IBM Retirement Fund8,136$344.0K0.03%−1,720−17.5%Reduced
Texas Yale Capital Corp.8,125$344.0K0.02%00.0%Unchanged
Black Swift Group, LLC8,115$343.0K0.17%+750+10.2%Added
BP PLC8,023$340.0K0.01%−3,519−30.5%Reduced
Charter Trust Co8,041$340.0K0.03%00.0%Unchanged
ExodusPoint Capital Management, LP8,013$339.0K0.01%−75,146−90.4%Reduced
Steel Peak Wealth Management LLC7,846$332.0K0.02%−1,631−17.2%Reduced
Franklin Resources Inc7,741$328.0K0.00%−21,506−73.5%Reduced
Van Hulzen Asset Management, LLC7,750$328.0K0.05%+7,750New
Stock Yards Bank & Trust Co7,732$327.0K0.02%−300−3.7%Reduced
Wedbush Securities Inc7,668$325.0K0.02%+983+14.7%Added
Sheets Smith Wealth Management7,665$324.0K0.04%00.0%Unchanged
Redpoint Investment Management Pty Ltd7,643$323.0K0.03%−2,001−20.7%Reduced
Washington Trust Bank7,600$322.0K0.04%+422+5.9%Added
Kentucky Retirement Systems Insurance Trust Fund7,515$318.0K0.03%−651−8.0%Reduced
Fiduciary Group LLC7,250$314.0K0.04%00.0%Unchanged
Personal Cfo Solutions, LLC7,392$313.0K0.06%+83+1.1%Added
Mackenzie Financial Corp7,367$312.0K0.00%−507−6.4%Reduced
Scotia Capital Inc.7,367$312.0K0.00%+7,367New
Mission Creek Capital Partners, Inc.7,357$311.0K0.05%+7+0.1%Added
Fca Corp7,200$305.0K0.09%00.0%Unchanged
TBH Global Asset Management, LLC7,195$304.0K0.07%+15+0.2%Added
Principle Wealth Partners LLC7,110$301.0K0.03%+7,110New
Inscription Capital, LLC7,110$301.0K0.03%+7,110New
BNP PARIBAS ASSET MANAGEMENT Holding S.A.7,033$298.0K0.00%−143,214−95.3%Reduced
Gerber Kawasaki Wealth & Investment Management7,043$298.0K0.03%+7,043New
Royal Fund Management, LLC6,996$296.0K0.05%−208−2.9%Reduced
Meristem Family Wealth, LLC6,916$293.0K0.05%+6,916New
Coastal Investment Advisors, Inc.6,846$290.0K0.07%+641+10.3%Added
Seeyond6,842$289.0K0.03%+6,842New
Vestmark Advisory Solutions, Inc.6,638$281.0K0.02%−769−10.4%Reduced
Keybank National Association6,614$280.0K0.00%+494+8.1%Added
Dynamic Technology Lab Private Ltd6,624$280.0K0.03%+6,624New
Citizens Business Bank6,611$279.0K0.04%−4,036−37.9%Reduced
SeaCrest Wealth Management, LLC6,573$278.0K0.03%+24+0.4%Added
E&G Advisors, LP0$275.0K0.07%−7,800−100.0%Reduced
Accuvest Global Advisors6,473$274.0K0.14%00.0%Unchanged
Hudson Valley Investment Advisors Inc6,400$271.0K0.05%00.0%Unchanged
Beaumont Financial Partners, LLC6,365$269.0K0.02%−439−6.5%Reduced
Global Retirement Partners, LLC6,349$269.0K0.03%+30.0%Added
Park Avenue Securities LLC6,334$268.0K0.01%+487+8.3%Added
Bristlecone Advisors, LLC6,266$265.0K0.04%00.0%Unchanged
Flagship Harbor Advisors, LLC6,234$264.0K0.03%−222−3.4%Reduced
New England Investment & Retirement Group, Inc.6,247$264.0K0.06%+6,247New
Livforsakringsbolaget Skandia, Omsesidigt6,161$261.0K0.02%+3,700+150.3%Added
XTX Topco Ltd6,158$261.0K0.09%+6,158New