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Disclosery

IRM IRON MTN INC DEL

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REIT (common), issuer CIK 1020569

989 managers (1,014 13F filers) reported a position in IRM shares at 2025-12-31, 257,267,304 shares in all. 72 filers opened a position and 106 filers sold out during the quarter.

Managers
989
13F filers
1,014
New
72
Added
326
Reduced
408
Sold out
106
Shares held by filers
257,267,304

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, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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
HM PAYSON & CO12,526$1.04M0.01%013F-HRTimeline
REIK & CO., LLC12,480$1.04M0.28%-1,50013F-HRTimeline
Comprehensive Money Management Services…12,360$1.03M0.71%-1,20013F-HRTimeline
Diversify Advisory Services, LLCgroup of 2 filers holding10,737$1.02M-7,551Timeline
WIREGRASS INVESTMENT MANAGEMENT LLC12,284$1.02M0.85%13F-HRTimeline
Assenagon Asset Management S.A.12,202$1.01M<0.01%+47813F-HRTimeline
Widmann Financial Services, Inc.12,110$1M0.61%013F-HRTimeline
TOKIO MARINE ASSET MANAGEMENT CO LTDin group TOKIO MARINE HOLDINGS, INC.12,034$998K0.03%+17813F-HRTimelineGroup
SEGALL BRYANT & HAMILL, LLC12,009$996K0.01%013F-HRTimeline
Abbot Financial Management, Inc.11,877$985K0.41%+32513F-HRTimeline
EP Wealth Advisors, LLC11,863$984K0.01%13F-HRTimeline
CHOREO, LLC11,800$984K0.01%-2,03813F-HRTimeline
HB Wealth Management, LLC11,827$981K0.01%-1,35913F-HRTimeline
Verdence Capital Advisors LLC11,791$978K0.06%-8,94113F-HRTimeline
MITCHELL MCLEOD PUGH & WILLIAMS INC10,200$977K0.14%new13F-HRTimeline
Campbell & CO Investment Adviser LLC11,764$976K0.05%+5,44413F-HRTimeline
Advisory Services Network, LLC11,724$972K0.01%-42513F-HRTimeline
Kessler Investment Group, LLC11,703$971K0.41%-5913F-HRTimeline
Elo Mutual Pension Insurance Co11,697$970K0.01%-18,45313F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…11,685$969K<0.01%-713F-HRTimeline
Kintegral Advisory, LLCin group Kintegral Advisory, LLC11,528$966K0.08%-31513F-HRTimelineGroup
Ullmann Wealth Partners Group, LLC9,356$963K0.1%+5713F-HRTimeline
DELTA CAPITAL MANAGEMENT LLC11,610$963K0.54%013F-HRTimeline
Wealthcare Advisory Partners LLCin group Wealthcare Advisory Partners …11,509$955K0.02%-1,21613F-HRTimelineGroup
Spire Wealth Managementin group Spire Wealth Management11,473$952K0.03%-2,52313F-HRTimelineGroup
Bleakley Financial Group, LLC11,403$946K0.02%+70913F-HRTimeline
Retirement Planning Co of New England, …11,308$938K0.38%-5813F-HRTimeline
BURLING WEALTH PARTNERS, LLC11,268$935K0.15%-12413F-HRTimeline
Crestwood Advisors Group, LLC11,243$933K0.02%+7,83913F-HRTimeline
CARY STREET PARTNERS ASSET MANAGEMENT L…group of 2 filers holding11,174$927K-934Timeline
Coppell Advisory Solutions LLC11,071$923K0.09%+6113F-HRTimeline
Truvestments Capital LLC11,109$922K0.17%-38913F-HRTimeline
LEVEL FOUR ADVISORY SERVICES, LLCin group LEVEL FOUR ADVISORY SERVICES,…11,043$916K0.03%+71313F-HRTimelineGroup
Glenview Trust Co11,000$912K0.01%013F-HRTimeline
Cynosure Group, LLC11,000$912K0.09%+6,30113F-HRTimeline
J.M. Arbour, LLC10,860$901K0.9%13F-HRTimeline
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise10,812$897K0.03%-21,75213F-HRTimelineGroup
MOODY NATIONAL BANK TRUST DIVISIONin group MOODY NATIONAL BANK TRUST DIV…10,812$897K0.09%-8,13013F-HRTimelineGroup
INGALLS & SNYDER LLC10,745$891K0.03%-1013F-HRTimeline
Wellington Shields & Co., LLCin group Wellington Shields Capital Ma…10,643$883K0.22%013F-HRTimelineGroup
Essex Financial Services, Inc.group of 2 filers holding10,603$879K-1,739Timeline
Unifi Asset Management LP10,593$879K0.95%13F-HRTimeline
Beacon Financial Advisory LLC10,543$875K0.2%-3,29313F-HRTimeline
EntryPoint Capital, LLC10,503$871K0.34%new13F-HRTimeline
OMERS ADMINISTRATION Corp10,475$869K0.01%013F-HRTimeline
Leonteq Securities AG10,467$868K0.05%+7,86513F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP10,430$865K<0.01%-2,64913F-HRTimeline
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA10,408$863K<0.01%13F-HRTimelineGroup
PLIMOTH TRUST CO LLC10,328$857K0.19%013F-HRTimeline
Guardian Asset Advisors, LLC10,225$848K0.44%-29313F-HRTimeline
ODDO BHF ASSET MANAGEMENT SAS10,064$835K0.03%-2,21213F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
North Dakota State Investment Board10,059$834K0.03%13F-HRTimeline
Farther Finance Advisors, LLC10,026$832K0.01%+3,55613F-HRTimeline
Smith Group Asset Management, LLC10,000$830K0.04%013F-HRTimeline
Munich Reinsurance Co Stock Corp in Mun…9,791$816K0.02%new13F-HRTimeline
Apollon Wealth Management, LLCin group Apollon Wealth Management, LLC9,749$809K0.01%-76113F-HRTimelineGroup
Capital Investment Advisory Services, L…9,639$800K0.06%-4513F-HRTimeline
Orion Porfolio Solutions, LLC9,584$795K0.01%+1,14513F-HRTimeline
BEACON INVESTMENT ADVISORS LLC9,570$794K0.32%-22913F-HRTimeline
DAVENPORT & Co LLC9,479$787K<0.01%+10813F-HRTimeline
ATWOOD & PALMER INC9,464$785K0.04%+1013F-HRTimeline
Redhawk Wealth Advisors, Inc.9,440$783K0.09%-2,27213F-HRTimeline
VERUS CAPITAL PARTNERS, LLC9,434$783K0.05%+2413F-HR/ATimeline
Havemeyer Place LP9,388$779K0.15%13F-HRTimeline
DENALI ADVISORS LLC9,321$773K0.09%+6913F-HRTimeline
INDEPENDENT FINANCIAL GROUP, LLC9,316$773K0.02%013F-HRTimeline
Advisors Capital Management, LLC9,314$773K0.01%+3,89813F-HRTimeline
WEDBUSH SECURITIES INC9,294$771K0.02%+1,03713F-HRTimeline
Sequoia Financial Advisors, LLC9,273$769K<0.01%-84113F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp9,269$769K0.01%-19313F-HRTimelineGroup
V-Square Quantitative Management LLC9,178$761K0.08%new13F-HRTimeline
Compound Planning, Inc.9,018$748K0.02%+4,95013F-HRTimeline
Founders Financial Alliance, LLC8,977$745K0.14%+2113F-HRTimeline
Future Financial Wealth Managment LLC8,056$744K0.5%-34313F-HRTimeline
Savant Capital, LLCin group Savant Capital, LLC8,949$742K<0.01%-44813F-HRTimelineGroup
Arista Wealth Management, LLC8,845$734K0.09%-3,45613F-HRTimeline
Mechanics Bank Trust Department8,829$732K0.1%+3,73613F-HRTimeline
GREENLEAF TRUST8,693$721K0.01%-28413F-HRTimeline
Herold Advisors, Inc.8,650$718K0.16%013F-HRTimeline
Callan Family Office, LLC8,622$715K0.02%+2,55613F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC8,522$707K0.01%-1,03513F-HRTimelineGroup
Bramshill Investments, LLC8,296$688K0.04%+5513F-HRTimeline
AE Wealth Management LLC8,245$684K<0.01%-5,32113F-HRTimeline
RIK SAYLOR FINANCIAL, INC.8,166$677K0.5%-5013F-HRTimeline
Strait & Sound Wealth Management LLC8,127$674K0.25%-1,38913F-HRTimeline
Colonial River Investments, LLC8,086$671K0.24%-46313F-HRTimeline
AXXCESS WEALTH MANAGEMENT, LLC8,086$671K0.01%-2,45613F-HR/ATimeline
SECURIAN ASSET MANAGEMENT, INC8,037$667K0.03%-6,16013F-HRTimeline
RNC CAPITAL MANAGEMENT LLC8,000$664K0.03%013F-HRTimeline
BAILARD, INC.7,942$659K0.01%-713F-HRTimeline
Keating Financial Advisory Services, In…7,885$654K0.09%13F-HRTimeline
Archer Investment Corp7,800$647K0.15%013F-HRTimeline
Independence Bank of Kentucky7,749$643K0.08%+2513F-HRTimeline
MINDSET WEALTH MANAGEMENT, LLC7,748$643K0.17%+38413F-HRTimeline
Arkadios Wealth Advisors7,748$643K0.01%+4,47113F-HRTimeline
Empowered Funds, LLC7,725$641K0.01%-62113F-HR/ATimeline
Cardinal Point Capital Management ULC7,610$638K0.04%-59013F-HRTimeline
MassMutual Private Wealth & Trust, FSB7,648$634K0.02%+22513F-HRTimeline
Trivium Point Advisory, LLC7,648$634K0.06%-9213F-HRTimeline
Prospera Financial Services Inc7,630$633K0.01%+1,71013F-HRTimeline
Ascent Group, LLCin group Ascent Group, LLC7,628$633K0.02%+19313F-HRTimelineGroup
Mathes Company, Inc.7,550$626K0.22%013F-HRTimeline
HARBOUR INVESTMENTS, INC.7,422$616K0.01%-1,77813F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…7,411$615K0.01%+1,88913F-HRTimelineGroup
PRINCETON CAPITAL MANAGEMENT LLC7,401$614K0.16%013F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC7,317$607K0.01%-18913F-HRTimeline
CENTAURUS FINANCIAL, INC.7,215$599K0.03%+19813F-HRTimeline
MGO ONE SEVEN LLC7,169$595K0.01%+10013F-HRTimeline
Badgley Phelps Wealth Managers, LLC7,095$595K0.01%-15013F-HRTimeline
Chicago Partners Investment Group LLC6,316$591K0.01%+97413F-HRTimeline
TBH Global Asset Management, LLC7,118$590K0.1%-3613F-HRTimeline
Bay Colony Advisory Group, Inc d/b/a Ba…7,011$582K0.07%-37713F-HRTimeline
Fiduciary Group, LLC7,000$581K0.05%013F-HRTimeline
Beacon Pointe Advisors, LLC6,971$578K<0.01%-2,04213F-HRTimeline
Cresset Asset Management, LLC6,711$562K<0.01%+2,90713F-HRTimeline
Summit Financial, LLC6,680$560K0.01%-5,03113F-HRTimeline
Ballentine Partners, LLC6,556$544K0.01%-60413F-HRTimeline
CX Institutional6,546$543K0.02%-4,70013F-HRTimeline
Integrated Wealth Concepts LLC6,538$542K0.01%-1,13413F-HRTimeline
AlphaGrep UK Ltd6,538$542K0.18%13F-HRTimeline
Measured Wealth Private Client Group, L…6,525$541K0.14%-1,30713F-HRTimeline
Prime Capital Investment Advisors, LLC6,516$540K0.01%-86313F-HRTimeline
Checchi Capital Advisers, LLC6,513$540K0.04%-43613F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding6,478$537K+3,213Timeline
HUB Investment Partners, LLC6,473$537K0.01%-5,29213F-HRTimeline
Canada Post Corp Registered Pension Plan6,457$536K0.02%+1,57013F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC6,404$531K<0.01%-4,66513F-HRTimelineGroup
Columbia Asset Management6,392$530K0.09%013F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK6,348$527K<0.01%+63513F-HRTimelineGroup
Ascentis Independent Advisorsin group Ascentis Wealth Management, L…6,341$526K0.08%-9413F-HRTimelineGroup
GROUP ONE TRADING LLC6,294$522K0.02%-3,18913F-HRTimeline
Gerber Kawasaki Wealth & Investment Man…6,292$522K0.02%-4013F-HRTimeline
Integrated Advisors Network LLC6,238$517K0.02%-1,15613F-HRTimeline
Advisory Advocates, LLC6,145$510K0.51%13F-HRTimeline
QUADRANT CAPITAL GROUP LLC6,073$504K0.02%-53113F-HRTimeline
SHEETS SMITH WEALTH MANAGEMENT5,988$497K0.05%+7813F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC5,835$488K0.01%+2,50413F-HRTimeline
West Wealth Group, LLC5,850$485K0.1%+29913F-HRTimeline
Pinnacle Family Advisors, LLC5,849$485K0.21%+2313F-HRTimeline
Somerset Trust Co5,827$483K0.15%+4213F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.5,756$477K<0.01%-138,28313F-HRTimelineGroup
Entropy Technologies, LP5,614$466K0.03%new13F-HRTimeline
SIGNATUREFD, LLC5,605$465K0.01%-11013F-HRTimeline
WASHINGTON TRUST Co5,586$463K0.02%013F-HRTimeline
Garden State Investment Advisory Servic…5,505$461K0.11%013F-HRTimeline
FIDELIS CAPITAL PARTNERS, LLC5,551$460K0.03%-16213F-HRTimeline
OneDigital Investment Advisors LLC5,494$456K<0.01%-30013F-HRTimeline
Dynamic Technology Lab Private Ltd5,387$447K0.1%new13F-HRTimeline
Aprio Wealth Management, LLC5,385$447K0.03%+2,83213F-HRTimeline
Financial Management Professionals, Inc.5,265$441K0.05%-813F-HRTimeline
PEAK6 LLCin group PEAK6 LLC5,317$441K0.01%new13F-HR/ATimelineGroup
Simplicity Wealth,LLC5,294$439K0.03%new13F-HRTimeline
Valued Retirements, Inc.5,190$431K0.42%013F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.5,159$428K<0.01%+1213F-HRTimelineGroup
SYON CAPITAL LLC5,105$423K0.02%+1,20113F-HRTimeline
Kingsview Wealth Management, LLC5,095$423K0.01%-813F-HRTimeline
Kapstone Financial Advisors LLC5,095$423K0.21%-10013F-HRTimeline
PROFUND ADVISORS LLC5,087$422K0.01%+79713F-HRTimeline
PRUDENTIAL PLCin group PRUDENTIAL PLC5,066$420K<0.01%-72,50613F-HRTimelineGroup
ATALANTA SOSNOFF CAPITAL, LLCin group ATALANTA SOSNOFF CAPITAL, LLC5,065$420K0.01%-16013F-HRTimelineGroup
CFO CAPITAL MANAGEMENT LLC5,039$418K0.31%13F-HRTimeline
Estabrook Capital Management5,025$417K0.06%-31213F-HRTimeline
NorthStar Asset Management LLC /NJ/5,015$416K0.19%013F-HRTimeline
Brooklyn Investment Group4,987$412K0.02%+1,88713F-HRTimeline
M&G PLCin group M&G PLC4,963$412K<0.01%new13F-HRTimelineGroup
Performance Wealth Partners, LLC4,939$410K0.01%013F-HRTimeline
Smith Asset Management Co., LLC4,921$408K0.34%-29413F-HRTimeline
GF FUND MANAGEMENT CO. LTD.4,894$406K0.01%+5313F-HRTimeline
Curi Capital, LLC4,809$403K0.01%+38813F-HRTimeline
U.S. Capital Wealth Advisors, LLC4,795$398K0.01%-1,88713F-HRTimeline
Welch Group, LLC4,781$397K0.02%+25013F-HRTimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…4,780$397K0.01%-58,22013F-HRTimelineGroup
Linscomb Wealth, Inc.4,757$395K0.02%-21213F-HRTimeline
Carnegie Investment Counsel4,755$394K0.01%+2,37813F-HRTimeline
TD Waterhouse Canada Inc.4,755$394K<0.01%-1,04713F-HRTimeline
ATLAS CAPITAL ADVISORS INC.4,742$393K0.04%13F-HRTimeline
High Net Worth Advisory Group LLC4,692$389K0.09%013F-HRTimeline
NORDEN GROUP LLC4,681$388K0.04%new13F-HRTimeline
Horizon Investments, LLC4,680$388K<0.01%+14413F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC4,674$388K0.03%new13F-HRTimeline
JB Capital LLC4,671$387K0.02%new13F-HRTimeline
American Institute for Advanced Investm…4,670$387K0.25%-3,39513F-HRTimeline
Arax Advisory Partners4,624$384K0.01%-3,85913F-HRTimeline
DRW Securities, LLC4,607$382K0.03%-9,80713F-HRTimeline
AUGUSTINE ASSET MANAGEMENT INC4,596$381K0.08%-20413F-HRTimeline
INTEGRITY ALLIANCE, LLC.4,545$377K0.01%-32913F-HRTimeline
GAMMA Investing LLC4,530$376K0.02%-1,96713F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…4,521$375K0.01%-3,17113F-HRTimelineGroup
Wilmington Savings Fund Society, FSB4,503$374K0.01%-1713F-HRTimeline
HANCOCK WHITNEY CORP4,461$370K0.01%-6813F-HRTimeline
GSA CAPITAL PARTNERS LLP4,456$370K0.03%new13F-HRTimeline
Teamwork Financial Advisors, LLC4,453$369K0.04%-1613F-HRTimeline
QUEST INVESTMENT MANAGEMENT LLC4,428$367K0.04%+713F-HRTimeline
TD PRIVATE CLIENT WEALTH LLC4,422$367K0.01%-33313F-HRTimeline
FIDUCIARY FAMILY OFFICE, LLC4,362$362K0.1%-4,32413F-HRTimeline
Ameliora Wealth Management Ltd.4,350$361K0.11%013F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC4,340$360K<0.01%+1,44013F-HRTimelineGroup
Aspen Investment Management Inc4,342$360K0.11%-19713F-HRTimeline
ARMSTRONG ADVISORY GROUP, INC4,335$360K0.02%013F-HRTimeline
WealthBridge Capital Management, LLC4,291$356K0.08%-2013F-HRTimeline