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Iron Mountain (IRM) Institutional Ownership

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$104.53 -1.30 (-1.23%)
As of 03:27 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)
683
Total
Institutional Inflows
(last 12 months)
$5.19B
Number of
Institutional Sellers
(last 12 months)
566
Total
Institutional Outflows
(last 12 months)
$3.52B
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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
10/21/2025Tectonic Advisors LLC148,375$15.13M0.8%+15.6%0.050%
10/21/2025RB Capital Management LLC46,739$4.77M1.0%+2.5%0.016%
10/20/2025Allspring Global Investments Holdings LLC111,781$11.43M0.0%-0.3%0.038%
10/20/2025Merit Financial Group LLC19,930$2.03M0.0%+0.5%0.007%
10/20/2025Security National Bank1,254$128K0.0%-24.6%0.000%
10/20/2025Moody Lynn & Lieberson LLC14,569$1.49M0.1%+2.5%0.005%
10/20/2025VIRGINIA RETIREMENT SYSTEMS ET Al132,600$13.52M0.1%+8.4%0.045%
10/20/2025Ascent Group LLC7,435$758K0.0%+9.4%0.003%
10/20/2025Diversified Trust Co2,764$282K0.0%-19.9%0.001%
10/20/2025Continuum Advisory LLC2,077$212K0.0%+5.3%0.001%
10/17/2025Ethic Inc.48,712$4.97M0.1%-9.2%0.016%
10/17/2025Dumont & Blake Investment Advisors LLC29,896$3.05M0.7%-1.1%0.010%
10/17/2025Kavar Capital Partners Group LLC3,650$372K0.0%-12.0%0.001%
10/17/2025Sowell Financial Services LLC3,050$311K0.0%-5.2%0.001%
10/17/2025Apollon Wealth Management LLC10,510$1.07M0.0%-23.8%0.004%
10/16/2025 Carnegie Investment Counsel2,377$242K0.0%-14.4%0.001%
10/16/2025 Burney Co.49,603$5.06M0.2%-25.8%0.017%
10/16/2025 HBK Sorce Advisory LLC2,233$236K0.0%-7.7%0.001%
10/16/2025 Blue Trust Inc.1,699$173K0.0%+61.2%0.001%
10/16/2025 Avanza Fonder AB22,699$2.31M0.1%+34.1%0.008%
10/16/2025 Foresight Capital Management Advisors Inc.82,051$8.36M4.7%-5.4%0.028%
10/15/2025 CWM LLC11,739$1.20M0.0%+39.5%0.004%
10/15/2025 Spirit of America Management Corp NY38,950$3.97M0.8%-9.9%0.013%
10/15/2025 World Investment Advisors11,194$1.14M0.0%+33.1%0.004%
10/15/2025 Fiduciary Planning LLC2,382$243K0.1%N/A0.001%
10/15/2025 Brookstone Capital Management207,443$21.15M0.3%+40.1%0.070%
10/15/2025 Southland Equity Partners LLC3,096$316K0.1%-7.1%0.001%
10/15/2025 James Hambro & Partners LLP2,972$303K0.0%-54.3%0.001%
10/15/2025 Global X Japan Co. Ltd.776$79K0.0%-14.4%0.000%
10/15/2025 Swedbank AB284,858$29.04M0.0%-9.6%0.096%
10/15/2025 Vontobel Holding Ltd.1,078,487$109.94M0.3%N/A0.365%
10/15/2025 DAVENPORT & Co LLC9,371$955K0.0%-4.9%0.003%
10/15/2025 IFM Investors Pty Ltd103,586$10.46M0.1%+0.5%0.035%
10/14/2025 Highline Wealth Partners LLC15,199$1.55M0.4%-8.5%0.005%
10/14/2025 Monument Capital Management6,239$636K0.2%-4.8%0.002%
10/14/2025 Yousif Capital Management LLC45,857$4.68M0.0%-6.2%0.016%
10/14/2025 Farther Finance Advisors LLC6,470$660K0.0%+20.2%0.002%
10/14/2025 HBK Sorce Advisory LLC3,573$377K0.0%+47.7%0.001%
10/14/2025 Exchange Traded Concepts LLC3,715$379K0.0%+82.6%0.001%
10/14/2025 Kentucky Trust Co19,270$1.96M1.1%-4.0%0.007%
10/14/2025 Brighton Jones LLC2,134$218K0.0%N/A0.001%
10/14/2025 Community Bank of Raymore14,291$1.46M1.0%+7.1%0.005%
10/10/2025 Sound Income Strategies LLC1,110$116K0.0%+21.0%0.000%
10/10/2025 Natural Investments LLC3,581$365K0.1%+3.1%0.001%
10/10/2025 Corsicana & Co.900$92K0.1%N/A0.000%
10/10/2025 Flputnam Investment Management Co.18,746$1.91M0.0%+3.7%0.006%
10/10/2025 Perpetual Ltd9,130$931K0.0%-7.0%0.003%
10/10/2025 Focus Financial Network Inc.12,998$1.33M0.0%+2.5%0.004%
10/10/2025 Signal Advisors Wealth LLC5,047$515K0.0%N/A0.002%
10/9/2025 Jackson Square Capital LLC5,999$612K0.1%N/A0.002%
10/9/2025 Secure Asset Management LLC3,938$403K0.1%-15.1%0.001%
10/9/2025 U.S. Capital Wealth Advisors LLC6,682$681K0.0%-2.6%0.002%
10/9/2025 Redhawk Wealth Advisors Inc.11,712$1.19M0.1%-10.5%0.004%
10/9/2025 Voya Investment Management LLC62,625$6.38M0.0%-23.3%0.021%
10/9/2025 Dynamic Advisor Solutions LLC3,101$316K0.0%-6.5%0.001%
10/8/2025 Wedmont Private Capital3,157$334K0.0%+9.9%0.001%
10/8/2025 Czech National Bank75,013$7.65M0.1%+4.0%0.025%
10/7/2025 Channel Wealth LLC2,022$206K0.1%-22.9%0.001%
10/7/2025 Woodstock Corp63,057$6.43M0.6%+13.9%0.021%
10/7/2025 Assenagon Asset Management S.A.11,724$1.20M0.0%+1.6%0.004%
10/7/2025 Sonora Investment Management Group LLC87,250$8.89M0.6%-2.5%0.030%
10/7/2025 Oak Thistle LLC11,980$1.22M0.2%+85.2%0.004%
10/6/2025 Moody National Bank Trust Division18,942$1.93M0.2%-25.5%0.006%
10/6/2025 Venture Visionary Partners LLC33,180$3.38M0.1%+0.6%0.011%
10/2/2025 GAMMA Investing LLC6,497$662K0.0%+18.6%0.002%
10/1/2025 Praxis Investment Management Inc.20,717$2.11M0.1%+16.5%0.007%
9/26/2025Corient Private Wealth LLC220,275$22.59M0.0%-1.6%0.075%
9/24/2025Texas Permanent School Fund Corp26,780$2.75M0.0%-27.6%0.009%
9/12/2025Valeo Financial Advisors LLC2,088$214K0.0%N/A0.001%
9/4/2025Osaic Holdings Inc.119,147$12.22M0.0%-1.7%0.040%
8/29/2025Evolution Wealth Management Inc.952$98K0.1%N/A0.000%
8/29/2025Centaurus Financial Inc.6,568$674K0.0%+2.1%0.002%
8/27/2025Orion Porfolio Solutions LLC7,966$817K0.0%-8.0%0.003%
8/26/2025Thrivent Financial for Lutherans107,292$11.00M0.0%-15.9%0.036%
8/26/2025MASTERINVEST Kapitalanlage GmbH18,437$1.89M0.2%N/A0.006%
8/21/2025Pathway Financial Advisers LLC10,153$1.04M0.3%-2.1%0.003%
8/20/2025Kentucky Retirement Systems18,654$1.91M0.1%-6.1%0.006%
8/20/2025Kentucky Retirement Systems Insurance Trust Fund7,917$812K0.1%-6.5%0.003%
8/20/2025Coppell Advisory Solutions LLC13,061$1.34M0.2%N/A0.004%
8/19/2025B. Riley Wealth Advisors Inc.4,060$416K0.0%N/A0.001%
8/19/2025Advisory Services Network LLC11,664$1.14M0.0%-2.9%0.004%
8/18/2025Hudson Bay Capital Management LP6,108$626K0.0%N/A0.002%
8/18/2025Tyler Stone Wealth Management18,607$1.91M0.3%+1.0%0.006%
8/18/2025Nomura Holdings Inc.2,772$284K0.0%-96.3%0.001%
8/18/2025Geneos Wealth Management Inc.2,399$246K0.0%+145.3%0.001%
8/18/2025CYBER HORNET ETFs LLC767$79K0.1%N/A0.000%
8/16/2025Public Sector Pension Investment Board60,672$6.22M0.0%-22.8%0.021%
8/16/2025Headlands Technologies LLC1,122$115K0.0%N/A0.000%
8/15/2025Strategic Investment Advisors MI4,008$407K0.0%-31.6%0.001%
8/15/2025CANADA LIFE ASSURANCE Co437,654$44.95M0.1%-1.3%0.148%
8/15/2025Adelante Capital Management LLC403,205$41.36M2.9%+3.3%0.137%
8/15/2025Tower Research Capital LLC TRC 19,882$2.04M0.1%+85.8%0.007%
8/15/2025MUFG Securities EMEA plc865$89K0.0%N/A0.000%
8/15/2025Corient Private Wealth LLC220,602$22.63M0.0%-1.4%0.075%
8/15/2025State of Tennessee Department of Treasury100,097$10.27M0.0%-2.3%0.034%
8/15/2025Captrust Financial Advisors769,181$78.90M0.2%-4.3%0.260%
8/15/2025Prevail Innovative Wealth Advisors LLC46,555$4.78M1.1%+47.1%0.016%
8/15/2025BROOKFIELD Corp ON 14,193$1.46M0.0%+1.2%0.005%
8/15/2025Vident Advisory LLC9,817$1.01M0.0%+6.7%0.003%
8/15/2025Two Sigma Securities LLC8,798$902K0.1%N/A0.003%
(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, 1,101 institutional investors and hedge funds held shares of Iron Mountain. The most heavily invested institutionals were Vanguard Group Inc. ($4.83B), State Street Corp ($1.74B), Cohen & Steers Inc. ($1.57B), Geode Capital Management LLC ($826.19M), Invesco Ltd. ($439.98M), Norges Bank ($419.46M), and Capital World Investors ($401.25M).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 915 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. ($15.04M), Norges Bank ($10.67M), Wealthfront Advisers LLC ($6.80M), Invesco Ltd. ($3.25M), Daiwa Securities Group Inc. ($2.90M), UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($2.67M), and Wellington Management Group LLP ($2.29M).

How much institutional buying is happening at Iron Mountain?

Institutional investors have bought a total of 50,741,144 shares in the last 24 months. This purchase volume represents approximately $5.19B in transactions.

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

Of the 564 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. ($1.57M), and Canada Pension Plan Investment Board ($961.15K).

How much institutional selling is happening at Iron Mountain?

Institutional investors have sold a total of 33,577,024 shares in the last 24 months. This volume of shares sold represents approximately $3.52B in transactions.


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This page (NYSE:IRM) was last updated on 10/21/2025 by MarketBeat.com Staff
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