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Iron Mountain (IRM) Institutional Ownership

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$99.22 -0.71 (-0.71%)
As of 12:23 PM Eastern
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Institutional Ownership Changes (13F Filings) for Iron Mountain (NYSE:IRM)

Current
Institutional Ownership
Percentage
80.13%
Number of
Institutional Buyers
(last 12 months)
644
Total
Institutional Inflows
(last 12 months)
$4.47B
Number of
Institutional Sellers
(last 12 months)
560
Total
Institutional Outflows
(last 12 months)
$3.36B
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IRM Institutional Buying and Selling by Quarter

Iron Mountain Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
7/1/2025Harbor Investment Advisory LLC420$43K0.0%-32.9%0.000%
6/30/2025Pensionfund Sabic19,300$1.66M0.5%-13.5%0.007%
6/30/2025Pensionfund 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%
6/23/2025Swedbank 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%
5/21/2025IFM 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%
5/16/2025AQR Capital Management LLC65,165$5.53M0.0%-68.0%0.022%
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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%
5/15/2025Flputnam Investment Management Co.12,750$1.10M0.0%+1.6%0.004%
5/15/2025Royal Bank of Canada497,929$42.84M0.0%+11.1%0.169%
5/15/2025Retirement Planning Co of New England Inc.11,432$984K0.4%+1.6%0.004%
5/15/2025MAI Capital Management8,998$774K0.0%-30.1%0.003%
5/15/2025Quarry LP2,399$206K0.0%+174.2%0.001%
5/15/2025Nomura Holdings Inc.74,514$6.41M0.0%+70.4%0.025%
5/15/2025Baird Financial Group Inc.62,310$5.36M0.0%-4.9%0.021%
5/15/2025Vident Advisory LLC9,201$792K0.0%+113.3%0.003%
5/15/2025Evergreen Capital Management LLC3,317$285K0.0%+9.3%0.001%
5/15/2025The Manufacturers Life Insurance Company 195,137$16.79M0.0%+3.6%0.066%
5/15/2025Canada Pension Plan Investment Board109,343$9.41M0.0%-49.7%0.037%
5/15/2025Safe Harbor Fiduciary LLC20,026$1.72M1.8%-0.6%0.007%
5/15/2025Lansforsakringar Fondforvaltning AB publ 96,475$8.30M0.1%-0.7%0.033%
5/15/2025OMERS ADMINISTRATION Corp10,475$901K0.0%-14.1%0.004%
5/15/2025BNP Paribas Financial Markets578,174$49.75M0.0%+16.3%0.196%
5/15/2025Cascade Investment Group Inc.21,080$1.81M1.4%-2.2%0.007%
5/15/2025Eisler Capital Management Ltd.107,720$9.26M0.1%N/A0.037%
5/14/2025Truvestments Capital LLC14,311$1.23M0.3%-0.7%0.005%
5/14/2025B. Metzler seel. Sohn & Co. AG21,193$1.82M0.0%-14.2%0.007%
5/14/2025RB Capital Management LLC45,098$3.88M0.9%-2.7%0.015%
5/14/2025CreativeOne Wealth LLC3,119$268K0.0%-68.5%0.001%
5/14/2025Ieq Capital LLC18,264$1.57M0.0%+7.7%0.006%
5/14/2025Samalin Investment Counsel LLC2,526$217K0.1%N/A0.001%
5/14/2025Rafferty Asset Management LLC32,029$2.76M0.0%-17.0%0.011%
5/14/2025Epoch Investment Partners Inc.714,025$61.44M0.3%-4.5%0.242%
5/14/2025FORA Capital LLC36,263$3.12M0.3%-25.7%0.012%
5/14/2025WealthTrust Axiom LLC45,217$3.89M1.2%-2.3%0.015%
5/14/2025Corebridge Financial Inc.73,436$6.32M0.0%-3.7%0.025%
5/14/2025Freedom Investment Management Inc.4,834$416K0.0%+4.2%0.002%
5/14/2025MetLife Investment Management LLC91,868$7.90M0.0%-1.8%0.031%
5/14/2025Jump Financial LLC301,213$25.92M0.4%+725.6%0.102%
5/14/2025SVB Wealth LLC9,880$850K0.0%-9.2%0.003%
5/14/2025Cbre Investment Management Listed Real Assets LLC772,190$66.44M1.0%+42.7%0.262%
5/14/2025APG Asset Management N.V.158,200$12.60M0.0%-0.6%0.054%
5/14/2025Smartleaf Asset Management LLC1,670$142K0.0%-6.9%0.001%
5/14/2025Aew Capital Management L P669,267$57.58M2.8%-1.4%0.227%
5/14/2025Northwestern Mutual Wealth Management Co.54,772$4.71M0.0%+3.2%0.019%
5/14/2025Trinity Legacy Partners LLC38,642$3.33M0.8%-13.1%0.013%
5/14/2025APG Asset Management US Inc.582,174$50.59M0.4%+13.2%0.197%
5/14/2025AlphaQuest LLC1,095$94K0.0%N/A0.000%
5/14/2025Kestra Advisory Services LLC88,000$7.57M0.0%+4.5%0.030%
379 passengers walked away from this (Ad)

Elon Musk just wrote a $51 million check to back this material’s next phase… Because it’s not just saving lives in aviation — it’s solving the biggest flaw in AI. And only one U.S. company has the patent.

Chris Rowe breaks the story in this urgent briefing: Watch before it disappears.
5/14/2025Ameriprise Financial Inc.1,554,684$132.39M0.0%-2.2%0.527%
5/14/2025Norinchukin Bank The28,668$2.47M0.0%+9.9%0.010%
5/14/2025CW Advisors LLC29,559$2.55M0.0%-10.2%0.010%
5/14/2025Price T Rowe Associates Inc. MD824,103$70.91M0.0%-6.1%0.279%
5/14/2025Candriam S.C.A.70,017$6.02M0.0%-9.2%0.024%
5/14/2025GM Advisory Group LLC7,302$628K0.0%-6.3%0.002%
5/14/2025Erste Asset Management GmbH24,500$2.09M0.0%-71.7%0.008%
5/14/2025EntryPoint Capital LLC5,311$457K0.2%N/A0.002%
5/14/2025Venture Visionary Partners LLC32,618$2.81M0.1%-61.6%0.011%
5/14/2025Bowen Hanes & Co. Inc.75,000$6.45M0.2%N/A0.025%
(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, 1,094 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 894 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 44,374,128 shares in the last 24 months. This purchase volume represents approximately $4.47B in transactions.

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

Of the 560 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 32,099,515 shares in the last 24 months. This volume of shares sold represents approximately $3.36B in transactions.


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This page (NYSE:IRM) was last updated on 7/2/2025 by MarketBeat.com Staff
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