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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 2021

Institutional positions in Iron Mountain Inc as of Dec 31, 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
754
+53 vs. Q3 2021
Shares held
228.4M
−36.3K (0.0%) vs. Q3 2021
Total value
$12.0B
+$2.01B (+20.3%) vs. Q3 2021
New holders
126
265 more added
Sold out
73
243 more reduced

10 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2021: 754 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 2021: $12.0B
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, Q4 2021

Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q3 2021.

Institutions holding IRM in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Coldstream Capital Management Inc6,622$347.0K0.01%+6,622New
Washington Trust Bank6,519$341.0K0.03%−60−0.9%Reduced
E&G Advisors, LP6,500$340.0K0.08%00.0%Unchanged
Accuvest Global Advisors6,473$339.0K0.15%00.0%Unchanged
Penserra Capital Management LLC6,509$339.0K0.01%+3,802+140.5%Added
Cigna Investments Inc6,480$338.0K0.03%−2,250−25.8%Reduced
Vicus Capital7,216$336.0K0.03%+7,216New
Hudson Valley Investment Advisors Inc6,400$335.0K0.05%00.0%Unchanged
SeaCrest Wealth Management, LLC6,390$334.0K0.04%+111+1.8%Added
CPR Investments Inc.6,358$333.0K0.24%+6,358New
Cohen & Steers, Inc.6,344$332.0K0.00%+6,344New
Everence Capital Management Inc6,300$330.0K0.02%−16,270−72.1%Reduced
Seeyond6,304$329.0K0.03%+6,304New
Detalus Advisors, LLC6,128$321.0K0.15%−933−13.2%Reduced
Abbot Financial Management, Inc.6,100$319.0K0.14%00.0%Unchanged
Laird Norton Trust Company, LLC6,090$318.0K0.03%00.0%Unchanged
Linscomb & Williams, Inc.6,018$315.0K0.02%−36−0.6%Reduced
Patriot Financial Group Insurance Agency, LLC5,977$313.0K0.05%−277−4.4%Reduced
Kingsview Wealth Management, LLC5,982$313.0K0.01%+427+7.7%Added
Harvest Fund Management Co., Ltd5,920$310.0K0.05%+3,517+146.4%Added
Meeder Asset Management Inc5,903$309.0K0.03%−7,029−54.4%Reduced
High Net Worth Advisory Group LLC5,901$309.0K0.11%+5,901New
Tradewinds, LLC.4,415$309.0K0.36%+4,415New
J.W. Cole Advisors, Inc.5,882$308.0K0.02%+24+0.4%Added
Veritable, L.P.5,843$306.0K0.00%+5,843New
Verdence Capital Advisors LLC5,786$303.0K0.04%+15+0.3%Added
Montag A & Associates Inc5,765$302.0K0.01%+550+10.5%Added
American Portfolios Advisors5,718$299.2K0.01%+2,129+59.3%Added
Wellington Management Group LLP5,686$298.0K0.00%+83+1.5%Added
Southland Equity Partners LLC5,682$297.3K0.12%−374−6.2%Reduced
Beaumont Financial Partners, LLC1,995$296.0K0.02%−3,971−66.6%Reduced
Bristlecone Advisors, LLC5,642$295.0K0.04%00.0%Unchanged
Greenleaf Trust5,429$284.0K0.00%−112−2.0%Reduced
Axiom Investment Management LLC5,435$283.0K0.27%00.0%Unchanged
Washington Trust Co5,402$283.0K0.01%00.0%Unchanged
Personal Cfo Solutions, LLC5,352$280.0K0.05%−2,051−27.7%Reduced
Good Life Advisors, LLC5,345$280.0K0.03%+251+4.9%Added
Ieq Capital, LLC5,317$278.0K0.01%−144−2.6%Reduced
XML Financial, LLC5,266$276.0K0.03%+57+1.1%Added
Advisors Management Group Inc5,204$272.0K0.08%+10.0%Added
Nations Financial Group Inc,5,195$272.0K0.04%00.0%Unchanged
Fagan Associates, Inc.5,175$271.0K0.05%+5,175New
Essex Savings Bank5,167$270.0K0.09%00.0%Unchanged
Cullinan Associates Inc5,125$268.0K0.01%00.0%Unchanged
Toth Financial Advisory Corp5,112$268.0K0.04%+37+0.7%Added
Resource Consulting Group Inc5,123$268.0K0.09%+5,123New
Point72 Hong Kong Ltd5,064$265.0K0.02%−9,840−66.0%Reduced
Morse Asset Management, Inc5,000$262.0K0.06%+5,000New
West Wealth Group, LLC5,000$261.0K0.10%+5,000New
Raymond James Trust N.A.4,944$259.0K0.01%−2,733−35.6%Reduced
Bluefin Capital Management, LLC4,930$258.0K0.02%−630−11.3%Reduced
TrinityPoint Wealth, LLC4,938$258.0K0.05%+4,938New
Two Sigma Securities, LLC4,909$257.0K0.05%+4,909New
LMR Partners LLP4,888$256.0K0.00%+4,888New
Perfromance Wealth Partners, LLC4,889$256.0K0.01%+4,889New
Quad-Cities Investment Group, LLC4,864$255.0K0.16%+24+0.5%Added
IndexIQ Advisors LLC4,802$251.0K0.01%−161−3.2%Reduced
Private Portfolio Partners LLC4,786$250.5K0.06%+10.0%Added
IBM Retirement Fund4,773$250.0K0.03%−3,363−41.3%Reduced
Flagship Harbor Advisors, LLC4,764$249.0K0.02%−1,470−23.6%Reduced
Ci Investments Inc.4,741$248.0K0.00%−779−14.1%Reduced
Edmp, Inc.4,688$248.0K0.25%00.0%Unchanged
International Assets Investment Management, LLC4,716$247.0K0.04%−742−13.6%Reduced
Wulff, Hansen & Co.4,720$247.0K0.21%+4,720New
Brighton Jones LLC4,723$247.0K0.01%+4,723New
Gitterman Wealth Management, LLC4,696$245.0K0.18%+4,696New
Brown Brothers Harriman & Co4,657$244.0K0.00%00.0%Unchanged
Laurel Wealth Advisors, Inc.4,655$244.0K0.02%+20.0%Added
Bradley Foster & Sargent Inc4,504$236.0K0.00%+4,504New
Community Bank of Raymore4,460$233.0K0.10%+4,460New
Wealthspire Advisors, LLC4,375$229.0K0.01%+4,375New
Norris Financial Group, LLC4,363$228.3K0.14%−1,509−25.7%Reduced
Freestone Capital Holdings, LLC4,335$227.0K0.01%+4,335New
Guild Investment Management, Inc.4,236$222.0K0.22%+4,236New
Steward Partners Investment Advisory, LLC4,206$220.0K0.00%+2,338+125.2%Added
Pinnacle Private Wealth, LLC4,177$219.0K0.07%+4,177New
MSH Capital Advisors LLC4,173$218.4K0.10%+4,173New
Signaturefd, LLC4,101$215.0K0.01%+291+7.6%Added
Jupiter Asset Management Ltd4,062$213.0K0.00%−33,850−89.3%Reduced
Moneta Group Investment Advisors LLC4,070$213.0K0.01%+4,070New
Integrated Wealth Concepts LLC4,047$212.0K0.01%−8,113−66.7%Reduced
Brinker Capital Investments, LLC4,033$211.0K0.00%+4,033New
Brown Advisory Inc4,017$210.0K0.00%+4,017New
Marco Investment Management LLC4,000$209.0K0.02%+4,000New
Hunter Associates Investment Management LLC4,000$209.0K0.06%+4,000New
Wealthsource Partners, LLC3,991$209.0K0.02%+3,991New
Murphy, Middleton, Hinkle & Parker, Inc.4,000$209.0K0.11%+4,000New
IHT Wealth Management, LLC3,980$208.0K0.02%+3,980New
Seelaus Asset Management LLC3,950$207.0K0.11%+3,950New
Ameritas Investment Partners, Inc.3,944$206.0K0.01%00.0%Unchanged
Park National Corp3,905$204.0K0.01%+3,905New
Aevitas Wealth Management, Inc.3,879$203.0K0.12%+3,879New
Sunbelt Securities, Inc.4,523$202.0K0.03%+4,523New
HB Wealth Management, LLC3,851$202.0K0.00%+3,851New
Benjamin F. Edwards & Company, Inc.3,842$201.0K0.01%+80+2.1%Added
Checchi Capital Advisers, LLC3,831$200.0K0.02%+3,831New
IFP Advisors, Inc3,810$199.0K0.00%−585−13.3%Reduced
TD Waterhouse Canada Inc.3,699$192.5K0.00%+3,699New
Migdal Insurance & Financial Holdings Ltd.3,658$192.0K0.00%+161+4.6%Added
Surevest, LLC3,597$188.0K0.04%+3,597New