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Disclosery

IRM IRON MTN INC DEL

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REIT (common), issuer CIK 1020569

1,131 managers (1,167 13F filers) reported a position in IRM shares at 2026-06-30, 257,035,619 shares in all. 142 filers opened a position and 60 filers sold out during the quarter.

Managers
1,131
13F filers
1,167
New
142
Added
445
Reduced
383
Sold out
60
Shares held by filers
257,035,619

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding76,741$9.69M+596Timeline
MetLife Investment Management, LLCin group MetLife Investment Management…76,417$9.65M0.04%-1,03613F-HRTimelineGroup
STATE OF MICHIGAN RETIREMENT SYSTEM76,146$9.62M0.04%-1,10013F-HRTimeline
SEB Asset Management AB75,873$9.58M0.04%+6,64313F-HRTimeline
TUDOR INVESTMENT CORP ET AL75,389$9.52M0.04%+38,18113F-HRTimeline
Azimuth Capital Investment Management L…75,180$9.5M0.32%-5513F-HRTimeline
Private Advisor Group, LLC75,127$9.49M0.04%-10,18213F-HRTimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …75,637$9.48M0.01%+2,68213F-HRTimelineGroup
Allworth Financial LP74,559$9.42M0.04%-1,78713F-HRTimeline
CIBC Asset Management Inc71,468$9.03M0.02%-51213F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.71,225$9M0.07%+6,27313F-HRTimeline
Wealthfront Advisers LLC70,478$8.9M0.02%+68513F-HRTimeline
Chicago Capital, LLC69,881$8.83M0.21%-14,07013F-HRTimeline
UniSuper Management Pty Ltd69,636$8.8M0.05%-22,27213F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…69,555$8.79M0.04%+8,94413F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…68,906$8.7M<0.01%+33713F-HRTimelineGroup
PensionDanmark Pensionsforsikringsaktie…68,465$8.65M0.07%+7,43813F-HRTimeline
Varma Mutual Pension Insurance Co67,938$8.58M0.05%-19,00013F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS67,481$8.52M0.02%-23,75213F-HRTimelineGroup
LEE DANNER & BASS INC66,834$8.44M0.49%-30713F-HRTimeline
XPONANCE LLC66,624$8.42M0.05%+10,63513F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding66,562$8.41M-66,282Timeline
HOURGLASS CAPITAL, LLC66,050$8.34M1.64%-3,65013F-HR/ATimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP65,892$8.32M0.01%-113,31013F-HRTimelineGroup
OVERSEA-CHINESE BANKING Corp Ltdin group OVERSEA-CHINESE BANKING Corp …65,390$8.26M0.2%-27,04613F-HRTimelineGroup
PFA Pension, Forsikringsaktieselskab65,111$8.22M0.02%+1,41413F-HRTimeline
WOODSTOCK CORP65,102$8.22M0.68%-39513F-HRTimeline
Vestcor Inc64,949$8.2M0.2%+43913F-HRTimeline
Woodline Partners LP64,861$8.19M0.03%+7,00113F-HRTimeline
Pensionfund PDNgroup of 2 filers holding62,800$7.93M0Timeline
INTACT INVESTMENT MANAGEMENT INC.in group INTACT INVESTMENT MANAGEMENT …61,700$7.79M0.22%-9,90013F-HRTimelineGroup
BAROMETER CAPITAL MANAGEMENT INC.61,400$7.76M2.16%new13F-HRTimeline
THOMPSON SIEGEL & WALMSLEY LLC61,100$7.72M0.14%-1,00013F-HRTimeline
Federation des caisses Desjardins du Qu…60,455$7.64M0.02%+5,55713F-HRTimeline
FORESIGHT CAPITAL MANAGEMENT ADVISORS, …59,644$7.53M3.66%-8,64513F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC58,470$7.39M0.01%+23513F-HRTimelineGroup
Raiffeisen Bank International AGin group Raiffeisen Bank International…54,892$7.13M0.08%-32,76513F-HRTimelineGroup
ProShare Advisors LLC56,341$7.12M0.01%+1,79313F-HRTimeline
Hennion & Walsh Asset Management, Inc.56,304$7.11M0.2%+5,25813F-HRTimeline
NewEdge Advisors, LLC56,273$7.11M0.02%+14,45513F-HRTimeline
PEAPACK GLADSTONE FINANCIAL CORP55,863$7.06M0.08%-1,51013F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …56,671$6.91M0.01%+21813F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…61,836$6.88M0.01%+8,42513F-HRTimeline
Advisors Asset Management, Inc.54,419$6.87M0.1%+4,02013F-HRTimeline
PINEBRIDGE INVESTMENTS LLC53,335$6.74M0.06%+13,85913F-HRTimeline
SHELTON CAPITAL MANAGEMENT52,840$6.67M0.12%new13F-HRTimeline
Candriam S.C.A.52,275$6.6M0.03%-1,55213F-HRTimeline
Werlinich Asset Management, LLC51,982$6.57M2.51%013F-HRTimeline
New Age Alpha Advisors, LLC51,605$6.52M0.28%+1813F-HRTimeline
AMALGAMATED BANK51,190$6.47M0.04%-2,07713F-HRTimeline
Gotham Asset Management, LLC51,161$6.46M0.02%+11,42913F-HRTimeline
VAN LANSCHOT KEMPEN INVESTMENT MANAGEME…50,585$6.39M0.05%+11813F-HRTimeline
Rakuten Investment Management, Inc.in group Rakuten Group, Inc.48,661$6.32M0.02%+4,76813F-HRTimelineGroup
NIA IMPACT ADVISORS, LLC49,661$6.27M2.6%-21113F-HRTimeline
MACKENZIE FINANCIAL CORP49,443$6.25M0.01%+13,85113F-HRTimeline
Ethic Inc.49,180$6.21M0.08%+3,25413F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP45,566$6.03M<0.01%+1,03013F-HRTimelineGroup
Baird Financial Group, Inc.in group Baird Financial Group, Inc.47,658$6.02M0.01%+4,95113F-HRTimelineGroup
RB Capital Management, LLC46,766$5.91M1.16%-59713F-HRTimeline
Fideuram Asset Management (Ireland) dac43,870$5.69M0.11%+14,88213F-HRTimeline
Utah Retirement Systems44,878$5.67M0.05%-2,80913F-HRTimeline
BRITISH COLUMBIA INVESTMENT MANAGEMENT …44,611$5.63M0.04%+3,87213F-HRTimeline
New York Life Investment Management LLCin group New York Life Investment Mana…44,375$5.61M0.04%+18213F-HRTimelineGroup
Police & Firemen's Retirement System of…44,283$5.59M0.04%-84513F-HRTimeline
Ranch Capital Advisors Inc.42,611$5.41M1.71%+3,37813F-HRTimeline
Steward Partners Investment Advisory, L…42,548$5.37M0.03%-2,23713F-HRTimeline
Cinctive Capital Management LP42,348$5.35M0.21%new13F-HRTimeline
Moors & Cabot, Inc.41,490$5.24M0.2%+21313F-HRTimeline
HRT FINANCIAL LP41,293$5.21M0.01%-87,04513F-HRTimeline
HOLDERNESS INVESTMENTS CO40,621$5.13M0.86%+28213F-HRTimeline
First National Trust Co39,708$5.02M0.17%-10,91013F-HRTimeline
Schonfeld Strategic Advisors LLC39,438$4.98M0.03%-209,44813F-HRTimeline
WealthTrust Axiom LLC39,223$4.95M1.11%-16113F-HRTimeline
D.A. DAVIDSON & CO.38,708$4.89M0.03%+22713F-HRTimeline
SPIRIT OF AMERICA MANAGEMENT CORP/NY38,650$4.88M0.92%+20013F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC38,410$4.87M0.01%+2,20113F-HRTimelineGroup
YOUSIF CAPITAL MANAGEMENT, LLC38,277$4.83M0.05%-1,63713F-HRTimeline
Waverly Advisors, LLC37,733$4.77M0.03%+1,71513F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC37,168$4.69M0.01%+12,90513F-HRTimelineGroup
Rafferty Asset Management, LLC37,029$4.68M0.01%+7,92113F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND36,589$4.62M0.05%+2,70013F-HRTimeline
ING GROEP NV36,581$4.62M0.02%+30513F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC35,776$4.52M0.02%-9,82313F-HRTimeline
American Trust Investment Advisors, LLC34,838$4.4M2.17%-2,30813F-HRTimeline
Trinity Legacy Partners, LLC36,011$4.38M0.88%-2,85313F-HRTimeline
Venture Visionary Partners LLC34,434$4.35M0.12%-7,73913F-HRTimeline
B. Metzler seel. Sohn & Co. AGin group B. Metzler seel. Sohn & Co. AG34,219$4.32M0.04%+6,40713F-HRTimelineGroup
EASTERLY INVESTMENT PARTNERS LLC34,196$4.32M0.22%-27,80013F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP33,422$4.22M0.01%-60913F-HRTimelineGroup
OP Asset Management Ltd33,379$4.22M0.04%+2,68113F-HRTimeline
Jupiter Topco LLCin group Janus Henderson33,266$4.2M<0.01%13F-HRTimelineGroup
Munich Reinsurance Co Stock Corp in Mun…32,749$4.14M0.09%new13F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP32,177$4.06M0.04%+46313F-HRTimelineGroup
Elo Mutual Pension Insurance Co31,834$4.02M0.05%new13F-HRTimeline
Smithfield Trust Co31,715$4.01M0.16%013F-HRTimeline
Knights of Columbus Asset Advisors LLC31,649$4M0.2%013F-HRTimeline
Norinchukin Bank, Thein group Norinchukin Bank, The31,291$3.95M0.04%-15013F-HRTimelineGroup
Siemens Fonds Invest GmbH30,782$3.89M0.19%+12813F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…30,640$3.87M0.04%-82513F-HRTimelineGroup
Buckland Partners Management Co LLC30,000$3.82M1.87%013F-HRTimeline
REGIONS FINANCIAL CORPin group REGIONS FINANCIAL CORP29,921$3.78M0.02%-9,59513F-HRTimelineGroup
Heritage Trust Co29,698$3.75M0.32%-10013F-HRTimeline
ELEVATUS WELATH MANAGEMENT29,662$3.75M0.91%new13F-HRTimeline
Gradient Investments LLCin group Gradient Investments LLC29,602$3.74M0.05%+3,16313F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD29,362$3.71M<0.01%new13F-HRTimeline
Avanza Fonder AB28,747$3.63M0.08%+6,04813F-HRTimeline
J.W. COLE ADVISORS, INC.28,494$3.6M0.06%-95613F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\28,400$3.59M<0.01%+1,12013F-HRTimelineGroup
Cyndeo Wealth Partners, LLC28,031$3.54M0.17%-1,92013F-HRTimeline
DUMONT & BLAKE INVESTMENT ADVISORS LLC27,503$3.47M0.78%-70113F-HRTimeline
Cander Asset Management LP27,360$3.46M0.64%-105,89313F-HRTimeline
Naviter Wealth, LLC27,040$3.44M0.31%+5,07613F-HRTimeline
Simmons Bankin group Simmons Bank27,160$3.43M0.2%+23,61513F-HRTimelineGroup
BURNEY CO/27,160$3.43M0.09%-2,90813F-HRTimeline
Merit Financial Group, LLC26,724$3.38M0.02%+1,69113F-HR/ATimeline
Meridian Wealth Advisors, LLC26,615$3.36M0.38%+1,21613F-HRTimeline
Fiduciary Trust Coin group Fiduciary Trust Co26,462$3.34M0.04%+6,14613F-HRTimelineGroup
Kentucky Retirement Systemsgroup of 2 filers holding26,207$3.31M+18,486Timeline
FIFTH THIRD BANK, NATIONAL ASSOCIATIONgroup of 2 filers holding25,876$3.27M-655Timeline
Independent Advisor Alliance25,745$3.25M0.08%-4213F-HRTimeline
Metis Global Partners, LLC25,667$3.24M0.07%+13,72513F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC25,211$3.19M<0.01%-4,34913F-HRTimelineGroup
WESTPAC BANKING CORPin group WESTPAC BANKING CORP25,195$3.18M0.2%+1,88413F-HRTimelineGroup
LANARK FINANCIAL, INC.25,089$3.17M0.21%-33713F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC24,902$3.15M0.02%+9513F-HRTimelineGroup
Erste Asset Management GmbHin group Erste Asset Management GmbH24,000$3.12M0.02%+1,00013F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC24,616$3.11M0.03%+15,38213F-HRTimelineGroup
One Capital Management, LLC30,034$3.07M0.09%013F-HRTimeline
PFG Investments, LLC24,046$3.04M0.12%+47713F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC23,651$3.01M0.01%+2,94313F-HRTimelineGroup
Sterling Capital Management LLC23,532$2.97M0.05%+13,64913F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC23,293$2.94M0.05%+5,40813F-HR/ATimelineGroup
Entropy Technologies, LP23,082$2.92M0.12%-3,31713F-HRTimeline
CORRADO ADVISORS, LLC22,979$2.9M1.34%-50413F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…22,954$2.9M0.02%013F-HRTimeline
Capital Investment Advisors, LLC22,809$2.88M0.04%-36513F-HRTimeline
MAI Capital Management22,736$2.88M0.01%+2,50213F-HRTimeline
Gulf International Bank (UK) Ltd22,470$2.84M0.06%-50013F-HRTimeline
CoreFirst Bank & Trust22,399$2.83M1.41%-23013F-HRTimeline
Nepsis Inc.22,032$2.78M0.94%-49813F-HRTimeline
Pasadena Private Wealth, LLC21,601$2.73M0.35%-913F-HRTimeline
STOCK YARDS BANK & TRUST CO21,499$2.72M0.08%-24013F-HR/ATimeline
Ameritas Investment Partners, Inc.group of 2 filers holding21,413$2.7M+13,263Timeline
NewEdge Wealth, LLC21,343$2.7M0.03%+1,97813F-HRTimeline
KCM INVESTMENT ADVISORS LLC21,311$2.69M0.08%013F-HRTimeline
MASTERINVEST Kapitalanlage GmbH21,228$2.68M0.23%013F-HRTimeline
BENJAMIN EDWARDS INCin group BENJAMIN EDWARDS INC21,006$2.65M0.02%-81013F-HRTimelineGroup
Saudi Central Bank20,823$2.63M0.03%+9,91213F-HRTimeline
PRAXIS INVESTMENT MANAGEMENT INC20,717$2.62M0.14%013F-HRTimeline
Sippican Capital Advisors20,602$2.6M1.59%-2,12513F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC20,062$2.53M<0.01%-1,76813F-HRTimelineGroup
Ancora Advisors LLCin group Ancora Advisors LLC19,766$2.5M0.05%-1,12613F-HRTimelineGroup
OPPENHEIMER ASSET MANAGEMENT INC.group of 2 filers holding19,753$2.5M-5,451Timeline
Edgestream Partners, L.P.19,236$2.43M0.07%-82113F-HRTimeline
GRS Advisors, LLC19,231$2.43M0.21%013F-HRTimeline
GABLES CAPITAL MANAGEMENT INC.19,192$2.42M0.88%-15013F-HRTimeline
Osmosis Investment Management UK Ltd19,143$2.42M0.11%-38,56713F-HRTimeline
Allianz Asset Management GmbHin group Allianz SE22,577$2.42M<0.01%+29913F-HRTimelineGroup
Blue Sparrow, LLC /DE19,130$2.42M0.02%013F-HRTimeline
Vectors Research Management, LLC18,994$2.4M0.63%-5,57113F-HRTimeline
Investment Management Corp of Ontario18,935$2.39M0.03%-2,20013F-HRTimeline
ABN AMRO INVESTMENT SOLUTIONSin group ABN AMRO INVESTMENT SOLUTIONS18,832$2.38M0.02%+3,01913F-HRTimelineGroup
GeoWealth Management, LLC18,781$2.37M0.07%-3,36313F-HRTimeline
Emerald Investment Advisers, LLCin group EMERALD ADVISERS, LLC18,535$2.34M0.16%+8,71713F-HRTimelineGroup
Integrated Wealth Concepts LLC18,392$2.32M0.01%+2,02913F-HRTimeline
Connor, Clark & Lunn Investment Managem…17,996$2.27M<0.01%new13F-HRTimeline
HORIZON KINETICS ASSET MANAGEMENT LLC17,845$2.25M0.03%-56013F-HRTimeline
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…17,484$2.21M0.02%+15,34213F-HRTimelineGroup
Kentucky Trust Co17,465$2.21M1.06%-1,40013F-HRTimeline
ALPS ADVISORS INC17,427$2.2M0.01%new13F-HRTimeline
Community Bank of Raymore17,301$2.19M1.29%+1,43013F-HRTimeline
AG2R LA MONDIALE GESTION D'ACTIFS17,290$2.18M0.08%-1,67313F-HRTimeline
Diversify Advisory Services, LLCgroup of 2 filers holding17,100$2.17M+8,485Timeline
Madison Asset Management, LLCin group Madison Asset Management, LLC17,052$2.15M0.03%013F-HRTimelineGroup
RFG Advisory, LLC16,910$2.14M0.03%-8813F-HRTimeline
Claro Advisors Inc.16,771$2.12M0.22%+3213F-HRTimeline
CASCADE INVESTMENT GROUP, INC.16,756$2.12M1.19%-1,02513F-HRTimeline
Crescent Grove Advisors, LLC16,389$2.08M0.18%+33513F-HRTimeline
Arax Advisory Partners16,454$2.08M0.01%+12,46913F-HRTimeline
COMMERCE BANKin group COMMERCE BANK16,371$2.07M0.01%-2213F-HRTimelineGroup
HARTFORD INVESTMENT MANAGEMENT CO16,354$2.07M0.06%-52513F-HRTimeline
Investor's Fiduciary Advisor Network, L…16,270$2.06M0.7%-4,35713F-HRTimeline
Summit Trail Advisors, LLC15,993$2.02M0.03%-1,44513F-HRTimeline
Crossmark Global Holdings, Inc.15,990$2.02M0.03%+17213F-HRTimeline
Maryland State Retirement & Pension Sys…15,980$2.02M0.03%+1,27713F-HRTimeline
CAPITAL FINANCIAL GROUP INC\CO\ /ADV15,979$2.02M1.06%-1,49313F-HRTimeline
HB Wealth Management, LLC15,577$1.97M0.01%+17113F-HRTimeline
INSPIRE TRUST CO, N.A.15,500$1.96M0.27%-2,05913F-HRTimeline
Royal Fund Management, LLC15,471$1.95M0.16%-17813F-HRTimeline
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC15,432$1.95M0.03%-2,50013F-HRTimelineGroup
KING LUTHER CAPITAL MANAGEMENT CORP15,262$1.93M0.01%-4013F-HRTimeline
Louisiana State Employees Retirement Sy…15,200$1.92M0.03%+10013F-HR/ATimeline
Snowden Capital Advisors LLC15,052$1.91M0.05%-78213F-HRTimeline
Trust Investment Advisors15,117$1.91M0.91%+1,16213F-HRTimeline
Compound Planning, Inc.14,936$1.89M0.05%+3,96913F-HRTimeline
Empowered Funds, LLC14,840$1.87M0.01%-8,24213F-HRTimeline
Farther Finance Advisors, LLC14,689$1.86M0.01%+4,16113F-HRTimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD14,640$1.85M0.05%+80013F-HRTimeline
Kessler Investment Group, LLC14,594$1.84M0.79%-6313F-HRTimeline
One Charles Private Wealth Services, LLC14,538$1.84M0.42%-43713F-HRTimeline