Free Trial

Iron Mountain (IRM) Institutional Ownership

Iron Mountain logo
$98.16 +0.90 (+0.93%)
Closing price 03:59 PM Eastern
Extended Trading
$96.84 -1.32 (-1.35%)
As of 07:29 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

Institutional Ownership Changes (13F Filings) for Iron Mountain (NYSE:IRM)

Current
Institutional Ownership
Percentage
80.13%
Number of
Institutional Buyers
(last 12 months)
647
Total
Institutional Inflows
(last 12 months)
$4.48B
Number of
Institutional Sellers
(last 12 months)
560
Total
Institutional Outflows
(last 12 months)
$3.36B
Get IRM Insider Trade Alerts

Want to know when executives and insiders are buying or selling Iron Mountain stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Skip Chart & View Institutional Buying and Selling Data

IRM Institutional Buying and Selling by Quarter

Iron Mountain Major Shareholders & Ownership History

Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
7/16/2025Beaumont Financial Advisors LLC2,830$290K0.0%-12.0%0.001%
7/16/2025Strategic Investment Solutions Inc. IL1,923$197K0.1%-30.4%0.001%
7/16/2025Hartford Investment Management Co.17,740$1.82M0.1%-1.4%0.006%
7/16/2025Perigon Wealth Management LLC3,400$349K0.0%-8.8%0.001%
7/15/2025Retireful LLC2,602$267K0.2%N/A0.001%
7/15/2025TD Private Client Wealth LLC6,869$705K0.0%+14.5%0.002%
7/15/2025Public Employees Retirement System of Ohio92,597$9.50M0.0%+0.6%0.031%
7/15/2025Kentucky Trust Co20,065$2.06M1.2%-2.6%0.007%
7/15/2025Financial Management Professionals Inc.5,240$542K0.1%-6.0%0.002%
7/15/2025Ballentine Partners LLC6,889$707K0.0%+27.9%0.002%
7/15/2025Fifth Third Bancorp21,090$2.16M0.0%+2.4%0.007%
7/15/2025SJS Investment Consulting Inc.2,000$205K0.0%+25.0%0.001%
7/15/2025Fortitude Family Office LLC3,118$320K0.1%-32.3%0.001%
7/14/2025 E&G Advisors LP3,200$328K0.1%-8.6%0.001%
7/14/2025 Golden State Equity Partners6,346$651K0.1%+23.2%0.002%
7/14/2025 Oliver Luxxe Assets LLC2,000$205K0.0%-96.1%0.001%
7/14/2025 Mechanics Bank Trust Department4,483$460K0.1%+30.8%0.002%
7/14/2025 GAMMA Investing LLC5,476$562K0.0%+37.9%0.002%
7/14/2025 U.S. Capital Wealth Advisors LLC6,862$704K0.0%-93.9%0.002%
7/14/2025 Park Avenue Securities LLC20,454$2.10M0.0%+52.6%0.007%
7/14/2025 Avanza Fonder AB16,925$1.74M0.1%N/A0.006%
7/11/2025 Farther Finance Advisors LLC5,382$552K0.0%+12.8%0.002%
7/11/2025 UMB Bank n.a.2,316$238K0.0%-8.5%0.001%
7/11/2025 Global X Japan Co. Ltd.907$93K0.0%+20.1%0.000%
7/11/2025 SeaCrest Wealth Management LLC3,112$319K0.0%-5.2%0.001%
7/11/2025 Diversified Trust Co3,452$354K0.0%N/A0.001%
7/11/2025 Perpetual Ltd9,820$1.01M0.0%-7.1%0.003%
7/11/2025 TCV Trust & Wealth Management Inc.140,427$14.40M1.3%-1.3%0.048%
7/11/2025 Kingstone Capital Partners Texas LLC98,400$10.09M0.0%N/A0.033%
7/11/2025 IFM Investors Pty Ltd103,029$10.57M0.1%-9.7%0.035%
7/10/2025 Oliver Lagore Vanvalin Investment Group500$51K0.0%N/A0.000%
7/10/2025 Kozak & Associates Inc.1,000$99K0.0%N/A0.000%
7/10/2025 Moody National Bank Trust Division25,424$2.61M0.2%+6.2%0.009%
7/10/2025 Redhawk Wealth Advisors Inc.13,086$1.34M0.2%-2.2%0.004%
7/10/2025 NorthCrest Asset Manangement LLC2,826$285K0.0%N/A0.001%
7/10/2025 Wealth Enhancement Advisory Services LLC50,250$5.06M0.0%+2.4%0.017%
7/10/2025 Swedbank AB315,060$32.32M0.0%+4.0%0.107%
7/10/2025 Secure Asset Management LLC4,641$476K0.1%N/A0.002%
7/10/2025 Sumitomo Mitsui DS Asset Management Company Ltd97,014$9.95M0.1%+2.2%0.033%
7/10/2025 Focus Financial Network Inc.12,685$1.31M0.1%+7.4%0.004%
$100 Trillion “AI Metal” Found in American Ghost Town (Ad)

Jeff Brown recently traveled to a ghost town in the middle of an American desert… To investigate what could be the biggest technology story of this decade. In short, he believes what he's holding in his hand is the key to the $100 trillion AI boom… And only one company here in the U.S. can mine this obscure metal.

Click here to get the details on this virtual monopoly.
7/9/2025 Chesley Taft & Associates LLC11,492$1.18M0.1%-1.5%0.004%
7/9/2025 Woodstock Corp55,378$5.68M0.5%+3.6%0.019%
7/9/2025 Czech National Bank72,119$7.40M0.1%+6.9%0.024%
7/9/2025 MassMutual Private Wealth & Trust FSB7,434$763K0.0%+5.0%0.003%
7/8/2025 Atwood & Palmer Inc.9,445$969K0.1%+14.5%0.003%
7/8/2025 Richard P Slaughter Associates Inc2,229$229K0.0%-12.4%0.001%
7/8/2025 E. Ohman J or Asset Management AB12,703$1.30M0.0%-6.6%0.004%
7/8/2025 Parallel Advisors LLC3,397$348K0.0%-9.5%0.001%
7/7/2025 Wesbanco Bank Inc.2,029$208K0.0%N/A0.001%
7/7/2025 Somerset Trust Co5,721$587K0.2%+4.0%0.002%
7/7/2025 RB Capital Management LLC45,619$4.68M1.1%+1.2%0.015%
7/1/2025 Harbor Investment Advisory LLC420$43K0.0%-32.9%0.000%
6/30/2025Pensionfund Sabic19,300$1.66M0.5%-13.5%0.007%
6/30/2025 Pensionfund DSM Netherlands38,500$3.31M2.2%-9.4%0.013%
6/26/2025AG2R LA Mondiale Gestion D Actifs15,836$1.36M0.1%N/A0.005%
6/23/2025 Swedbank AB303,030$26.07M0.0%+4.9%0.103%
6/18/2025Voya Investment Management LLC134,366$11.56M0.0%-2.2%0.046%
6/10/2025BROOKFIELD Corp ON 14,022$1.21M0.0%+26.1%0.005%
5/28/2025Strs Ohio190,800$16.42M0.1%N/A0.065%
5/28/2025Ellsworth Advisors LLC25,194$2.17M0.6%+0.9%0.009%
5/27/2025Advisors Capital Management LLC4,612$397K0.0%+13.6%0.002%
5/21/2025Geneos Wealth Management Inc.978$84K0.0%-14.4%0.000%
5/21/2025Schmidt P J Investment Management Inc.2,360$203K0.0%-17.5%0.001%
5/21/2025 IFM Investors Pty Ltd114,068$9.81M0.1%-7.1%0.039%
5/20/2025Belpointe Asset Management LLC2,476$213K0.0%-65.8%0.001%
5/20/2025Intech Investment Management LLC448,761$38.61M0.4%+6.8%0.152%
5/20/2025Focus Partners Wealth149,537$12.90M0.0%+22.4%0.051%
5/20/2025Integrity Alliance LLC.6,559$564K0.0%N/A0.002%
5/20/2025Aspen Investment Management Inc4,531$390K0.2%+9.7%0.002%
5/19/2025Smith Asset Management Co. LLC6,655$573K0.5%N/A0.002%
5/19/2025UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC422,423$36.35M0.0%-0.9%0.143%
5/16/2025Woodline Partners LP24,742$2.13M0.0%+41.0%0.008%
5/16/2025Empowered Funds LLC5,728$493K0.0%+10.3%0.002%
5/16/2025MBB Public Markets I LLC3,604$310K0.0%N/A0.001%
5/16/2025United Services Automobile Association7,308$622K0.0%N/A0.002%
5/16/2025Meiji Yasuda Asset Management Co Ltd.4,454$383K0.0%-14.9%0.002%
5/16/2025Arete Wealth Advisors LLC5,655$487K0.0%-23.5%0.002%
5/16/2025Aristeia Capital L.L.C.3,640$313K0.0%+24.4%0.001%
5/16/2025Goldman Sachs Group Inc.1,974,922$169.92M0.0%+86.1%0.669%
5/16/2025Adelante Capital Management LLC390,346$33.59M2.4%-12.5%0.132%
5/16/2025UniSuper Management Pty Ltd113,493$9.77M0.1%+3.7%0.038%
5/16/2025Polar Asset Management Partners Inc.56,046$4.82M0.1%-60.4%0.019%
5/16/2025Nissay Asset Management Corp Japan ADV78,949$6.79M0.0%+1.6%0.027%
5/16/2025NewEdge Advisors LLC27,396$2.36M0.0%-8.6%0.009%
5/16/2025Nippon Life Global Investors Americas Inc.58,610$5.08M0.2%-49.9%0.020%
5/16/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.29,904$2.57M0.0%+4.5%0.010%
5/16/2025Integrated Wealth Concepts LLC7,745$666K0.0%-20.8%0.003%
5/16/2025Hancock Whitney Corp5,089$438K0.0%-56.7%0.002%
5/16/2025DoubleLine ETF Adviser LP17,189$1.48M0.5%-18.4%0.006%
5/16/2025Alliancebernstein L.P.599,714$51.60M0.0%+7.9%0.203%
This Cold War “Accident” Could Unleash New $100 Trillion AI Boom (Ad)

Obscure Metal More Valuable than Gold and Bitcoin… COMBINED? This strange "AI Metal" holds the key to the $100 trillion AI boom. Which is why Jeff Brown recently traveled to a location that has one of the highest concentrations of this metal in the world. And you won't believe what he uncovered.

Click here to see the details because this could be the biggest tech story of this decade.
5/16/2025AQR Capital Management LLC65,165$5.53M0.0%-68.0%0.022%
5/16/2025Atalanta Sosnoff Capital LLC5,741$494K0.0%+15.1%0.002%
5/16/2025Advisors Asset Management Inc.62,318$5.36M0.1%-5.2%0.021%
5/16/2025Alyeska Investment Group L.P.176,584$15.19M0.1%N/A0.060%
5/16/2025American Trust Investment Advisors LLC63,514$5.47M2.3%-6.4%0.022%
5/16/2025Amundi1,099,934$91.41M0.0%-23.6%0.373%
5/16/2025Adage Capital Partners GP L.L.C.318,052$27.37M0.1%+178.6%0.108%
5/15/2025Federation des caisses Desjardins du Quebec42,272$3.64M0.0%+22.8%0.014%
5/15/2025EP Wealth Advisors LLC14,936$1.29M0.0%-14.2%0.005%
5/15/2025Contour Asset Management LLC1,427,250$122.80M4.9%N/A0.484%
(Data available from 1/1/2016 forward)

IRM Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of IRM shares?

During the previous two years, 1,096 institutional investors and hedge funds held shares of Iron Mountain. The most heavily invested institutionals were Vanguard Group Inc. ($4.03B), State Street Corp ($1.98B), Cohen & Steers Inc. ($1.57B), BlackRock Inc. ($1.27B), Geode Capital Management LLC ($832.88M), Capital World Investors ($401.25M), and Northern Trust Corp ($367.16M).Learn more on Iron Mountain's institutional investors.

What percentage of Iron Mountain's stock is owned by institutional investors?

80.13% of Iron Mountain's stock is owned by institutional investors. Learn more on IRM's institutional investor holdings.

Which institutional investors have been buying Iron Mountain's stock?

Of the 902 institutional investors that purchased Iron Mountain's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Cohen & Steers Inc. ($19.83M), Wealthfront Advisers LLC ($6.80M), Norges Bank ($6.58M), Daiwa Securities Group Inc. ($4.45M), UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($2.67M), Wellington Management Group LLP ($2.29M), and Nuveen LLC ($2.23M).

How much institutional buying is happening at Iron Mountain?

Institutional investors have bought a total of 44,488,589 shares in the last 24 months. This purchase volume represents approximately $4.48B in transactions.

Which of Iron Mountain's major shareholders have been selling company stock?

Of the 556 institutional investors that sold Iron Mountain's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Cohen & Steers Inc. ($2.82M), UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC ($2.75M), FMR LLC ($2.68M), Wellington Management Group LLP ($2.31M), TD Asset Management Inc ($1.77M), Daiwa Securities Group Inc. ($1.62M), and Canada Pension Plan Investment Board ($1.13M).

How much institutional selling is happening at Iron Mountain?

Institutional investors have sold a total of 32,148,338 shares in the last 24 months. This volume of shares sold represents approximately $3.36B in transactions.



This page (NYSE:IRM) was last updated on 7/16/2025 by MarketBeat.com Staff
From Our Partners