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Disclosery

IRM IRON MTN INC DEL

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REIT (common), issuer CIK 1020569

1,057 managers (1,089 13F filers) reported a position in IRM shares at 2026-03-31, 253,245,822 shares in all. 157 filers opened a position and 95 filers sold out during the quarter.

Managers
1,057
13F filers
1,089
New
157
Added
403
Reduced
348
Sold out
95
Shares held by filers
253,245,822

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
TOKIO MARINE ASSET MANAGEMENT CO LTDin group TOKIO MARINE HOLDINGS, INC.12,867$1.31M0.05%+83313F-HRTimelineGroup
Daiichi Life Insurance Co., Ltd.in group Daiichi Life Insurance Co., L…12,754$1.3M0.04%-33513F-HRTimelineGroup
CHOREO, LLC12,624$1.3M0.02%+82413F-HRTimeline
WIREGRASS INVESTMENT MANAGEMENT LLC12,728$1.3M1.08%+44413F-HRTimeline
E. Ohman J:or Asset Management AB12,703$1.3M0.03%013F-HRTimeline
Comprehensive Money Management Services…12,540$1.28M0.84%+18013F-HRTimeline
HM PAYSON & CO12,526$1.28M0.02%013F-HRTimeline
REIK & CO., LLC12,480$1.27M0.35%013F-HRTimeline
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD12,363$1.26M0.01%-13,87313F-HRTimelineGroup
Advisory Services Network, LLC12,356$1.26M0.02%+63213F-HRTimeline
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise12,356$1.26M0.05%+1,54413F-HRTimelineGroup
LDR Capital Management LLC12,344$1.26M1.7%-2,81613F-HRTimeline
Chicago Partners Investment Group LLC10,693$1.25M0.03%+4,37713F-HRTimeline
Crestwood Advisors Group, LLC12,260$1.25M0.02%+1,01713F-HRTimeline
Chesley Taft & Associates LLC12,237$1.25M0.05%-50013F-HRTimeline
Widmann Financial Services, Inc.12,125$1.24M0.74%+1513F-HRTimeline
Bleakley Financial Group, LLC12,119$1.24M0.02%+71613F-HRTimeline
Assenagon Asset Management S.A.12,050$1.23M<0.01%-15213F-HRTimeline
Focus Financial Network, Inc.11,923$1.23M0.04%-1,27813F-HRTimeline
SEGALL BRYANT & HAMILL, LLC12,009$1.23M0.02%013F-HR/ATimeline
Metis Global Partners, LLC11,942$1.22M0.03%-1,58813F-HRTimeline
Abbot Financial Management, Inc.11,877$1.21M0.52%013F-HRTimeline
Dana Investment Advisors, Inc.11,836$1.21M0.04%-35,30113F-HRTimeline
Ascentis Independent Advisorsin group Ascentis Wealth Management, L…11,822$1.21M0.09%+5,48113F-HRTimelineGroup
Tema ETFs LLC11,780$1.2M0.08%-8,31913F-HRTimeline
CARY STREET PARTNERS ASSET MANAGEMENT L…group of 2 filers holding11,777$1.2M+603Timeline
DELTA CAPITAL MANAGEMENT LLC11,610$1.19M0.65%013F-HRTimeline
F/m Investments LLC11,275$1.15M0.08%-10,74513F-HRTimeline
Verdence Capital Advisors LLC11,273$1.15M0.07%-51813F-HRTimeline
Beacon Pointe Advisors, LLC11,217$1.15M0.01%+4,24613F-HRTimeline
MOODY NATIONAL BANK TRUST DIVISIONin group MOODY NATIONAL BANK TRUST DIV…11,210$1.14M0.11%+39813F-HRTimelineGroup
Savant Capital, LLCin group Savant Capital, LLC11,160$1.14M0.01%+2,21113F-HRTimelineGroup
Kintegral Advisory, LLCin group Kintegral Advisory, LLC11,038$1.14M0.11%-49013F-HRTimelineGroup
LEVEL FOUR ADVISORY SERVICES, LLCin group LEVEL FOUR ADVISORY SERVICES,…11,094$1.13M0.04%+5113F-HRTimelineGroup
Retirement Planning Co of New England, …11,048$1.13M0.46%-26013F-HRTimeline
Glenview Trust Co11,016$1.13M0.02%+1613F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP10,976$1.12M<0.01%+54613F-HRTimeline
Compound Planning, Inc.10,967$1.12M0.03%+1,94913F-HRTimeline
Saudi Central Bank10,911$1.11M0.02%new13F-HRTimeline
Guardian Asset Advisors, LLC10,911$1.11M0.65%+68613F-HRTimeline
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA10,850$1.11M0.01%+44213F-HRTimelineGroup
Vident Advisory, LLCin group Vident Advisory, LLC10,782$1.1M0.01%+2,26013F-HRTimelineGroup
INGALLS & SNYDER LLC10,735$1.1M0.04%-1013F-HRTimeline
Truvestments Capital LLC10,694$1.09M0.2%-41513F-HRTimeline
BRIGHTON JONES LLC10,675$1.09M0.02%new13F-HR/ATimeline
BURLING WEALTH PARTNERS, LLC10,671$1.09M0.18%-59713F-HRTimeline
Wellington Shields & Co., LLCin group Wellington Shields Capital Ma…10,643$1.09M0.28%013F-HRTimelineGroup
Beacon Financial Advisory LLC10,621$1.08M0.24%+7813F-HRTimeline
J.M. Arbour, LLC10,601$1.08M1.04%-25913F-HRTimeline
Essex Financial Services, Inc.group of 2 filers holding10,601$1.08M-2Timeline
HIGHLINE WEALTH PARTNERS LLC10,503$1.07M0.27%-2,38813F-HRTimeline
TD Waterhouse Canada Inc.10,610$1.07M<0.01%+5,85513F-HRTimeline
Sequoia Financial Advisors, LLC10,464$1.07M0.01%+1,19113F-HRTimeline
Farther Finance Advisors, LLC10,528$1.06M0.01%+50213F-HRTimeline
PLIMOTH TRUST CO LLC10,328$1.05M0.24%013F-HRTimeline
MITCHELL MCLEOD PUGH & WILLIAMS INC10,200$1.04M0.15%013F-HRTimeline
Smith Group Asset Management, LLC10,000$1.02M0.05%013F-HRTimeline
Sterling Capital Management LLC9,883$1.01M0.02%-7,51113F-HRTimeline
CREATIVE FINANCIAL DESIGNS INC /ADV9,879$1.01M0.06%+9,74013F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…9,839$1M0.06%new13F-HRTimelineGroup
Emerald Investment Advisers, LLCin group EMERALD ADVISERS, LLC9,818$1M0.09%13F-HRTimelineGroup
Apollon Wealth Management, LLCin group Apollon Wealth Management, LLC9,700$991K0.02%-4913F-HRTimelineGroup
Wealthcare Advisory Partners LLCin group Wealthcare Advisory Partners …9,693$990K0.02%-1,81613F-HRTimelineGroup
Diversify Advisory Services, LLCgroup of 2 filers holding8,615$987K-2,122Timeline
ATWOOD & PALMER INC9,476$968K0.05%+1213F-HRTimeline
DAVENPORT & Co LLC9,465$965K0.01%-1413F-HRTimeline
Ullmann Wealth Partners Group, LLC9,439$964K0.1%+8313F-HRTimeline
BEACON INVESTMENT ADVISORS LLC9,388$959K0.36%-18213F-HRTimeline
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.9,386$958K0.01%-64,43813F-HRTimeline
DENALI ADVISORS LLC9,358$956K0.11%+3713F-HRTimeline
Redhawk Wealth Advisors, Inc.9,344$954K0.11%-9613F-HRTimeline
Mechanics Bank Trust Department9,273$947K0.13%+44413F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC9,234$943K0.01%new13F-HRTimelineGroup
Capital Investment Advisory Services, L…9,234$943K0.07%-40513F-HRTimeline
OSTRUM ASSET MANAGEMENT9,222$942K0.05%+8,32213F-HRTimeline
ODDO BHF ASSET MANAGEMENT SAS9,183$938K0.04%-88113F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
INDEPENDENT FINANCIAL GROUP, LLC9,145$934K0.02%-17113F-HR/ATimeline
EP Wealth Advisors, LLC9,113$931K<0.01%-2,75013F-HRTimeline
GREENLEAF TRUST9,079$927K0.01%+38613F-HRTimeline
Orion Porfolio Solutions, LLC9,034$923K0.01%-55013F-HRTimeline
Founders Financial Alliance, LLC9,019$921K0.17%+4213F-HRTimeline
WEDBUSH SECURITIES INC9,007$920K0.03%-28713F-HRTimeline
Advisors Capital Management, LLC8,992$918K0.01%-32213F-HRTimeline
Callan Family Office, LLC8,743$893K0.02%+12113F-HRTimeline
OFI INVEST ASSET MANAGEMENT8,724$891K0.01%+5,28013F-HRTimeline
VERUS CAPITAL PARTNERS, LLC8,701$889K0.06%-73313F-HRTimeline
Brooklyn Investment Group8,679$886K0.03%+3,69213F-HRTimeline
Ascent Group, LLCin group Ascent Group, LLC8,652$884K0.03%+1,02413F-HRTimelineGroup
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp8,628$881K0.02%-64113F-HRTimelineGroup
Campbell & CO Investment Adviser LLC8,613$880K0.05%-3,15113F-HRTimeline
V-Square Quantitative Management LLC8,557$874K0.09%-62113F-HRTimeline
Herold Advisors, Inc.8,500$868K0.19%-15013F-HRTimeline
Future Financial Wealth Managment LLC7,646$868K0.56%-41013F-HRTimeline
North Dakota State Investment Board8,480$866K0.04%-1,57913F-HRTimeline
SYON CAPITAL LLC8,353$853K0.04%+3,24813F-HRTimeline
Trivium Point Advisory, LLC8,329$851K0.15%+68113F-HRTimeline
Bramshill Investments, LLC8,243$842K0.07%-5313F-HRTimeline
RIK SAYLOR FINANCIAL, INC.8,180$836K0.63%+1413F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding8,150$832K+1,672Timeline
Strait & Sound Wealth Management LLC8,136$831K0.32%+913F-HRTimeline
RNC CAPITAL MANAGEMENT LLC8,000$817K0.04%013F-HRTimeline
Cresset Asset Management, LLC7,925$816K<0.01%+1,21413F-HRTimeline
Colonial River Investments, LLC7,987$816K0.29%-9913F-HRTimeline
BAILARD, INC.7,942$811K0.02%013F-HRTimeline
SECURIAN ASSET MANAGEMENT, INC7,937$811K0.03%-10013F-HRTimeline
EntryPoint Capital, LLC7,819$799K0.23%-2,68413F-HRTimeline
Archer Investment Corp7,800$797K0.17%013F-HRTimeline
Kentucky Retirement Systemsgroup of 2 filers holding7,721$789K-18,420Timeline
COLDSTREAM CAPITAL MANAGEMENT INC7,705$787K0.01%+38813F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK7,520$768K<0.01%+1,17213F-HRTimelineGroup
MGO ONE SEVEN LLC7,510$767K0.02%+34113F-HRTimeline
Prospera Financial Services Inc7,495$766K0.01%-13513F-HRTimeline
MassMutual Private Wealth & Trust, FSB7,489$765K0.02%-15913F-HRTimeline
Mathes Company, Inc.7,400$756K0.28%-15013F-HRTimeline
PRINCETON CAPITAL MANAGEMENT LLC7,401$756K0.21%013F-HRTimeline
Arkadios Wealth Advisors7,386$754K0.01%-36213F-HRTimeline
GTS SECURITIES LLC7,330$749K0.03%+4,21113F-HRTimeline
Larson Financial Group LLC7,290$745K0.02%+5,33813F-HRTimeline
CENTAURUS FINANCIAL, INC.7,115$727K0.03%-10013F-HRTimeline
TBH Global Asset Management, LLC7,070$722K0.15%-4813F-HRTimeline
Bay Colony Advisory Group, Inc d/b/a Ba…7,004$715K0.09%-713F-HRTimeline
Fiduciary Group, LLC7,000$715K0.06%013F-HRTimeline
Checchi Capital Advisers, LLC6,980$713K0.05%+46713F-HRTimeline
Badgley Phelps Wealth Managers, LLC6,926$707K0.01%-16913F-HRTimeline
Prime Capital Investment Advisors, LLC6,912$706K0.01%+39613F-HRTimeline
Avior Wealth Management, LLC6,889$704K0.02%new13F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC6,870$702K0.02%+1,03513F-HRTimeline
IHT Wealth Management, LLC6,868$702K0.02%-9,46113F-HRTimeline
HighPoint Advisor Group LLC6,789$693K0.03%-15,61313F-HRTimeline
GAMMA Investing LLC6,621$676K0.03%+2,09113F-HRTimeline
QUADRANT CAPITAL GROUP LLC6,576$672K0.02%+50313F-HR/ATimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…6,504$664K0.01%-90713F-HRTimelineGroup
Canada Post Corp Registered Pension Plan6,457$660K0.03%013F-HRTimeline
Summit Financial, LLC6,380$657K0.01%-30013F-HRTimeline
Kingsview Wealth Management, LLC6,426$656K0.01%+1,33113F-HRTimeline
Aprio Wealth Management, LLC6,379$652K0.04%+99413F-HRTimeline
Gerber Kawasaki Wealth & Investment Man…6,364$650K0.02%+7213F-HRTimeline
Horizon Investments, LLC6,353$649K0.01%+1,67313F-HRTimeline
Aigen Investment Management, LP6,255$639K0.16%new13F-HRTimeline
HARBOUR INVESTMENTS, INC.6,174$631K0.01%-1,24813F-HRTimeline
Independence Bank of Kentucky6,124$626K0.08%-1,62513F-HRTimeline
SIGNATUREFD, LLC6,120$625K0.01%+51513F-HRTimeline
FIDELIS CAPITAL PARTNERS, LLC6,111$624K0.04%+56013F-HRTimeline
SHEETS SMITH WEALTH MANAGEMENT6,025$615K0.07%+3713F-HRTimeline
Cardinal Point Capital Management ULC5,905$608K0.04%-1,70513F-HRTimeline
Columbia Asset Management5,912$604K0.11%-48013F-HRTimeline
Machina Capital S.A.S.5,910$604K0.12%new13F-HRTimeline
CX Institutional5,893$602K0.02%-65313F-HRTimeline
Pinnacle Family Advisors, LLC5,880$601K0.28%+3113F-HRTimeline
West Wealth Group, LLC5,865$599K0.12%+1513F-HRTimeline
Ballentine Partners, LLC5,843$597K0.01%-71313F-HRTimeline
Somerset Trust Co5,675$580K0.18%-15213F-HRTimeline
WASHINGTON TRUST Co5,586$571K0.02%013F-HRTimeline
AE Wealth Management LLC5,506$562K<0.01%-2,73913F-HRTimeline
Simplicity Wealth,LLC5,497$561K0.03%+20313F-HRTimeline
TD PRIVATE CLIENT WEALTH LLC5,486$560K0.01%+1,06413F-HRTimeline
Financial Management Professionals, Inc.5,337$550K0.06%+7213F-HRTimeline
BROWN BROTHERS HARRIMAN & COin group BROWN BROTHERS HARRIMAN & CO5,231$534K<0.01%+3,13713F-HRTimelineGroup
HUB Investment Partners, LLC5,230$534K0.01%-1,24313F-HRTimeline
Valued Retirements, Inc.5,190$530K0.52%013F-HRTimeline
Destination Wealth Management5,186$530K0.01%+1,90413F-HRTimeline
M&G PLCin group M&G PLC5,193$530K<0.01%+23013F-HRTimelineGroup
HANCOCK WHITNEY CORP4,202$529K0.01%-25913F-HRTimeline
GROUP ONE TRADING LLC5,151$526K0.02%-1,14313F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management5,138$525K0.02%-6,33513F-HRTimelineGroup
ATALANTA SOSNOFF CAPITAL, LLCin group ATALANTA SOSNOFF CAPITAL, LLC5,072$518K0.01%+713F-HRTimelineGroup
Welch Group, LLC5,069$518K0.02%+28813F-HRTimeline
PRUDENTIAL PLCin group PRUDENTIAL PLC5,066$517K<0.01%013F-HRTimelineGroup
Estabrook Capital Management5,025$513K0.07%013F-HRTimeline
NorthStar Asset Management LLC /NJ/5,015$512K0.25%013F-HRTimeline
U.S. Capital Wealth Advisors, LLC4,991$510K0.01%+19613F-HRTimeline
Linscomb Wealth, Inc.4,954$506K0.02%+19713F-HRTimeline
Kapstone Financial Advisors LLC4,952$506K0.25%-14313F-HRTimeline
Performance Wealth Partners, LLC4,941$505K0.01%+213F-HRTimeline
LBP AM SA4,874$498K0.01%-130,04213F-HRTimeline
Cornerstone Wealth Group, LLC4,198$495K0.03%+18413F-HRTimeline
DAYMARK WEALTH PARTNERS, LLC4,806$491K0.02%+2,10413F-HRTimeline
Smith Asset Management Co., LLC4,756$486K0.42%-16513F-HRTimeline
OneDigital Investment Advisors LLC4,738$484K<0.01%-75613F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC4,715$482K<0.01%-1,68913F-HRTimelineGroup
Bridgewater Associates, LP4,694$479K<0.01%new13F-HRTimeline
High Net Worth Advisory Group LLC4,692$479K0.11%013F-HRTimeline
JB Capital LLC4,626$473K0.02%-4513F-HRTimeline
AUGUSTINE ASSET MANAGEMENT INC4,612$471K0.11%+1613F-HRTimeline
AlphaGrep UK Ltd4,610$471K0.14%-1,92813F-HRTimeline
Curi Capital, LLC4,567$469K0.01%-24213F-HRTimeline
Clearstead Advisors, LLC4,578$468K<0.01%+2,81113F-HRTimeline
Wilmington Savings Fund Society, FSB4,503$460K0.01%013F-HRTimeline
Aspen Investment Management Inc4,496$459K0.14%+15413F-HRTimeline
Krilogy Financial LLC3,885$457K0.01%+57713F-HRTimeline
GF FUND MANAGEMENT CO. LTD.4,464$456K0.01%-43013F-HRTimeline
QUEST INVESTMENT MANAGEMENT LLC4,437$453K0.05%+913F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC4,413$451K<0.01%+7313F-HRTimelineGroup
Measured Wealth Private Client Group, L…4,366$446K0.12%-2,15913F-HRTimeline
ADVISORS MANAGEMENT GROUP INC /ADV4,305$439K0.08%+1,26813F-HRTimeline
Wealthspire Advisors, LLC4,284$438K<0.01%new13F-HRTimeline
BCO Wealth Management LLC4,275$437K0.26%013F-HRTimeline
Advisory Advocates, LLC4,250$434K0.44%-1,89513F-HRTimeline
FIDUCIARY FAMILY OFFICE, LLC4,236$433K0.12%-12613F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.4,187$428K<0.01%-97213F-HRTimelineGroup