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Iron Mountain (IRM) Institutional Ownership

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$92.00 +0.13 (+0.14%)
Closing price 03:59 PM Eastern
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$92.00 0.00 (0.00%)
As of 04:12 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.
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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)
698
Total
Institutional Inflows
(last 12 months)
$5.10B
Number of
Institutional Sellers
(last 12 months)
569
Total
Institutional Outflows
(last 12 months)
$3.55B
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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
8/27/2025 Orion Porfolio Solutions LLC7,966$817K0.0%-8.0%0.003%
8/26/2025 Thrivent Financial for Lutherans107,292$11.00M0.0%-15.9%0.036%
8/26/2025 MASTERINVEST Kapitalanlage GmbH18,437$1.89M0.2%N/A0.006%
8/21/2025 Pathway Financial Advisers LLC10,153$1.04M0.3%-2.1%0.003%
8/20/2025 Kentucky Retirement Systems18,654$1.91M0.1%-6.1%0.006%
8/20/2025 Kentucky Retirement Systems Insurance Trust Fund7,917$812K0.1%-6.5%0.003%
8/20/2025 Coppell Advisory Solutions LLC13,061$1.34M0.2%N/A0.004%
8/19/2025 B. Riley Wealth Advisors Inc.4,060$416K0.0%N/A0.001%
8/19/2025 Advisory Services Network LLC11,664$1.14M0.0%-2.9%0.004%
8/18/2025 Hudson Bay Capital Management LP6,108$626K0.0%N/A0.002%
8/18/2025 Tyler Stone Wealth Management18,607$1.91M0.3%+1.0%0.006%
8/18/2025 Nomura Holdings Inc.2,772$284K0.0%-96.3%0.001%
8/18/2025 Geneos Wealth Management Inc.2,399$246K0.0%+145.3%0.001%
8/18/2025 CYBER HORNET ETFs LLC767$79K0.1%N/A0.000%
8/16/2025 Public Sector Pension Investment Board60,672$6.22M0.0%-22.8%0.021%
8/16/2025 Headlands Technologies LLC1,122$115K0.0%N/A0.000%
8/15/2025 Strategic Investment Advisors MI4,008$407K0.0%-31.6%0.001%
8/15/2025 CANADA LIFE ASSURANCE Co437,654$44.95M0.1%-1.3%0.148%
8/15/2025 Adelante Capital Management LLC403,205$41.36M2.9%+3.3%0.137%
8/15/2025 Tower Research Capital LLC TRC 19,882$2.04M0.1%+85.8%0.007%
8/15/2025 MUFG Securities EMEA plc865$89K0.0%N/A0.000%
8/15/2025 Corient Private Wealth LLC220,602$22.63M0.0%-1.4%0.075%
8/15/2025 State of Tennessee Department of Treasury100,097$10.27M0.0%-2.3%0.034%
8/15/2025 Captrust Financial Advisors769,181$78.90M0.2%-4.3%0.260%
8/15/2025 Prevail Innovative Wealth Advisors LLC46,555$4.78M1.1%+47.1%0.016%
8/15/2025 BROOKFIELD Corp ON 14,193$1.46M0.0%+1.2%0.005%
8/15/2025 Vident Advisory LLC9,817$1.01M0.0%+6.7%0.003%
8/15/2025 Two Sigma Securities LLC8,798$902K0.1%N/A0.003%
8/15/2025 Smartleaf Asset Management LLC1,479$151K0.0%-11.4%0.001%
8/15/2025 Snowden Capital Advisors LLC14,889$1.54M0.0%-10.8%0.005%
8/15/2025 Royal London Asset Management Ltd.143,234$14.69M0.0%-3.9%0.048%
8/15/2025 Rafferty Asset Management LLC37,390$3.84M0.0%+16.7%0.013%
8/15/2025 Orion Porfolio Solutions LLC7,966$817K0.0%-8.0%0.003%
8/15/2025 MML Investors Services LLC78,764$8.08M0.0%-2.5%0.027%
8/15/2025 Man Group plc55,123$5.65M0.0%-74.3%0.019%
8/15/2025 HRT Financial LP83,708$8.59M0.0%N/A0.028%
8/15/2025 Hudson Bay Capital Management LP6,108$626K0.0%N/A0.002%
8/15/2025 ICONIQ Capital LLC2,792$286K0.0%N/A0.001%
8/15/2025 IHT Wealth Management LLC16,951$1.74M0.0%-0.8%0.006%
8/15/2025 Great Valley Advisor Group Inc.4,284$440K0.0%+28.8%0.001%
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8/15/2025 EP Wealth Advisors LLC17,146$1.76M0.0%+14.8%0.006%
8/15/2025 Engineers Gate Manager LP66,745$6.85M0.1%+21.1%0.023%
8/15/2025 Curi Capital LLC4,853$500K0.0%+27.3%0.002%
8/15/2025 BI Asset Management Fondsmaeglerselskab A S14,219$1.46M0.0%+22.4%0.005%
8/15/2025 BNP Paribas Financial Markets426,625$43.76M0.0%-26.2%0.144%
8/15/2025 BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp46,215$4.74M0.0%-17.7%0.016%
8/15/2025 Brevan Howard Capital Management LP61,532$6.31M0.0%N/A0.021%
8/15/2025 Balyasny Asset Management L.P.388,197$39.82M0.1%-29.9%0.131%
8/15/2025 Bamco Inc. NY107,524$11.03M0.0%N/A0.036%
8/15/2025 Bank of America Corp DE1,249,442$128.16M0.0%+12.0%0.423%
8/15/2025 Adage Capital Partners GP L.L.C.560,252$57.47M0.1%+76.2%0.190%
8/15/2025 AQR Capital Management LLC106,009$10.77M0.0%+62.7%0.036%
8/15/2025 Ameriprise Financial Inc.1,705,824$175.93M0.0%+9.7%0.578%
8/14/2025 CTC Alternative Strategies Ltd.4,795$492K0.4%N/A0.002%
8/14/2025 Lighthouse Investment Partners LLC50,200$5.15M0.2%+1,908.0%0.017%
8/14/2025 Nia Impact Advisors LLC52,502$5.39M1.9%-18.1%0.018%
8/14/2025 California State Teachers Retirement System452,201$46.38M0.1%+4.9%0.153%
8/14/2025 Worldquant Millennium Advisors LLC268,157$27.51M0.1%+2.7%0.091%
8/14/2025 Canada Pension Plan Investment Board107,956$11.07M0.0%-1.3%0.037%
8/14/2025 Quantinno Capital Management LP88,511$9.08M0.0%+117.4%0.030%
8/14/2025 DZ BANK AG Deutsche Zentral Genossenschafts Bank Frankfurt am Main377,807$38.75M0.0%+215.4%0.128%
8/14/2025 Diversify Advisory Services LLC17,214$1.77M0.1%+165.6%0.006%
8/14/2025 Lavaca Capital LLC300$31K0.0%-72.8%0.000%
8/14/2025 Alliancebernstein L.P.561,286$57.57M0.0%-6.4%0.190%
8/14/2025 Peapack Gladstone Financial Corp56,085$5.75M0.1%-0.9%0.019%
8/14/2025 HUB Investment Partners LLC11,570$1.19M0.0%+8.4%0.004%
8/14/2025 Treasurer of the State of North Carolina137,047$14.06M0.0%+2.9%0.046%
8/14/2025 Glenview Trust co11,005$1.13M0.0%N/A0.004%
8/14/2025 The Manufacturers Life Insurance Company 186,034$19.08M0.0%-4.7%0.063%
8/14/2025 Sei Investments Co.885,080$90.78M0.1%+4.2%0.300%
8/14/2025 NewEdge Advisors LLC32,646$3.35M0.0%+19.2%0.011%
8/14/2025 Investment Management Corp of Ontario7,191$738K0.0%-13.3%0.002%
8/14/2025 AXA S.A.101,843$10.45M0.0%+285.0%0.034%
8/14/2025 State Street Corp16,809,643$1.74B0.1%+0.6%5.691%
8/14/2025 Daiwa Securities Group Inc.2,954,927$303.09M1.1%+7.4%1.000%
8/14/2025 CoreFirst Bank & Trust24,834$2.55M1.4%-1.0%0.008%
8/14/2025 SVB Wealth LLC8,222$843K0.0%-16.8%0.003%
8/14/2025 Natixis12,358$1.27M0.0%-36.9%0.004%
8/14/2025 Ossiam15,273$1.57M0.0%-1.7%0.005%
8/14/2025 Bank of Nova Scotia42,189$4.33M0.0%-2.9%0.014%
8/14/2025 California Public Employees Retirement System493,885$50.66M0.0%+3.1%0.167%
8/14/2025 Cary Street Partners Financial LLC12,185$1.25M0.0%-2.0%0.004%
8/14/2025 Cerity Partners LLC35,292$3.62M0.0%+3.6%0.012%
8/14/2025 Federated Hermes Inc.162,932$16.71M0.0%+1,537.3%0.055%
8/13/2025 Jump Financial LLC3,515$361K0.0%-98.8%0.001%
8/13/2025 Brown Advisory Inc.12,885$1.32M0.0%+2.6%0.004%
8/13/2025 Amundi1,600,818$159.46M0.1%+45.5%0.542%
8/13/2025 Epoch Investment Partners Inc.683,612$70.12M0.4%-4.3%0.231%
8/13/2025 GeoWealth Management LLC23,632$2.42M0.1%-0.5%0.008%
8/13/2025 Royal Fund Management LLC14,560$1.49M0.1%+9.4%0.005%
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8/13/2025 Baird Financial Group Inc.48,670$4.99M0.0%-21.9%0.016%
8/13/2025 First Trust Advisors LP57,703$5.92M0.0%-62.0%0.020%
8/13/2025 Crescent Grove Advisors LLC13,255$1.37M0.1%+1.5%0.004%
8/13/2025 Guggenheim Capital LLC12,605$1.29M0.0%+3.2%0.004%
8/13/2025 EverSource Wealth Advisors LLC1,322$136K0.0%+29.4%0.000%
8/13/2025 Invesco Ltd.4,289,583$439.98M0.1%+50.6%1.452%
8/13/2025 CW Advisors LLC54,950$5.64M0.1%+85.9%0.019%
8/13/2025 Beacon Pointe Advisors LLC7,813$801K0.0%+9.0%0.003%
8/13/2025 Quantbot Technologies LP17,498$1.80M0.0%-24.2%0.006%
8/13/2025 M&T Bank Corp86,327$8.86M0.0%+1.3%0.029%
(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, 1,097 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 916 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 49,802,424 shares in the last 24 months. This purchase volume represents approximately $5.10B in transactions.

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

Of the 569 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 33,769,813 shares in the last 24 months. This volume of shares sold represents approximately $3.55B in transactions.


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This page (NYSE:IRM) was last updated on 8/28/2025 by MarketBeat.com Staff
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