Skip to main content
Livermore
Livermore
ZHEN

Iron Mountain Inc

IRM
Exchange
NYSE
Industry
Real Estate Investment Trusts
SEC CIK
0001020569

In the last 90 days, Iron Mountain Inc insiders filed 0 open-market purchases and 6 sales; 1,173 institutions reported holding it in 13F filings for Q2 2026, worth $32.4B in total; no superinvestor holds it.

Q1 2025 vs. Q4 2024

How the institutions holding Iron Mountain Inc changed between Q4 2024 and Q1 2025.

All holders in Q1 2025All holders in Q4 2024

13F holders of IRM: Q4 2024 compared with Q1 2025
MeasureQ4 2024Of which not filed for Q1 2025Q1 2025Change
Holders1,06716995−56
Shares237.3M2.92M245.2M+10.9M (+4.6%)
Value$24.9B$307.1M$21.1B−$3.56B (−14.4%)

16 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (88)

Institutions that held Iron Mountain Inc at the end of Q1 2025 but not at the end of Q4 2024.

Institutions new to IRM in Q1 2025
InstitutionSharesValue% of portfolio
Nuveen, LLC2,234,200$192.2M0.06%
Contour Asset Management LLC1,427,250$122.8M5.12%
Worldquant Millennium Advisors LLC260,981$22.5M0.14%
Lasalle Investment Management Securities LLC194,144$16.7M0.73%
Alyeska Investment Group, L.P.176,584$15.2M0.06%
Two Sigma Investments, LP175,533$15.1M0.03%
Eisler Capital Management Ltd.107,720$9.26M0.28%
ASR Vermogensbeheer N.V.90,601$7.80M0.12%
Renaissance Technologies LLC85,763$7.38M0.01%
Virginia Retirement Systems Et Al85,400$7.35M0.05%
Banco Santander, S.A.77,016$6.63M0.07%
B&I Capital AG76,660$6.60M2.14%
Bowen Hanes & Co Inc75,000$6.45M0.18%
Kempen Capital Management N.V.70,641$6.08M0.06%
Tudor Investment Corp Et Al50,109$4.31M0.04%
Prevail Innovative Wealth Advisors, LLC31,648$2.72M0.73%
Algert Global LLC31,523$2.71M0.07%
OP Asset Management Ltd30,309$2.61M0.04%
Rakuten Investment Management, Inc.26,840$2.28M0.01%
Aurora Investment Counsel25,444$2.19M1.21%
Entropy Technologies, LP24,177$2.08M0.20%
Banque Cantonale Vaudoise23,815$2.05M0.09%
Connor, Clark & Lunn Investment Management Ltd.23,263$2.00M0.01%
Aigen Investment Management, LP23,104$1.99M0.32%
Susquehanna Portfolio Strategies, LLC21,247$1.83M0.79%
Natixis19,581$1.68M0.01%
AG2R la Mondiale Gestion D'Actifs15,836$1.56M0.08%
Virtus Investment Advisers, Inc.14,385$1.24M0.34%
GWN Securities Inc.10,877$1.05M0.06%
Jefferies Financial Group Inc.10,764$926.1K0.02%
Fiduciary Family Office, LLC8,582$738.4K0.25%
Kentucky Retirement Systems Insurance Trust Fund8,466$728.4K0.05%
Point72 (DIFC) Ltd8,171$703.0K0.07%
United Services Automobile Association7,308$621.9K0.02%
Inceptionr LLC7,214$620.7K0.19%
Integrity Alliance, LLC.6,559$564.3K0.02%
Virtu Financial LLC5,695$490.0K0.03%
EntryPoint Capital, LLC5,311$457.0K0.21%
Linscomb & Williams, Inc.5,033$433.0K0.02%
Dark Forest Capital Management LP4,994$429.7K0.02%
Accuvest Global Advisors4,776$411.0K0.35%
Farringdon Capital, Ltd.4,540$390.6K0.20%
M&G Plc4,376$376.3K0.00%
MBB Public Markets I LLC3,604$310.1K0.04%
Long Road Investment Counsel, LLC3,500$301.1K0.12%
Mechanics Bank Trust Department3,428$294.9K0.04%
Sowell Financial Services LLC3,314$285.1K0.01%
Fortis Capital Management LLC3,089$265.8K0.05%
Advisor Resource Council3,419$230.5K0.02%
Brookwood Investment Group LLC2,602$223.9K0.04%
Samalin Investment Counsel, LLC2,526$217.4K0.09%
Capital Square, LLC2,522$217.0K0.13%
Lighthouse Investment Partners, LLC2,500$215.1K0.01%
Iron Financial, LLC2,483$213.6K0.12%
Arrowpoint Investment Partners (Singapore) Pte. Ltd.2,458$211.5K0.10%
Waldron Private Wealth LLC2,338$202.9K0.01%
Argentarii, LLC2,333$200.7K0.10%
Blue Bell Private Wealth Management, LLC1,969$169.4K0.03%
Quest Partners LLC1,095$94.2K0.01%
Plante Moran Financial Advisors, LLC555$47.8K0.00%
Zions Bancorporation, National Association536$46.1K0.00%
Richards, Merrill & Peterson, Inc.500$43.0K0.02%
Franchise Capital Ltd455$39.1K0.02%
Wayfinding Financial, LLC432$37.0K0.02%
Ramirez Asset Management, Inc.400$34.4K0.01%
Cranbrook Wealth Management, LLC300$25.8K0.01%
Financial Network Wealth Advisors LLC300$25.8K0.03%
Private Wealth Asset Management, LLC215$18.5K0.00%
Main Street Group, LTD200$17.2K0.01%
Provenance Wealth Advisors, LLC189$16.3K0.00%
Global Wealth Strategies & Associates150$12.9K0.00%
South State Corp.129$11.1K0.00%
Saudi Central Bank115$9.89K0.05%
Creative Financial Designs Inc90$7.74K0.00%
S&T Bank75$6.45K0.00%
Marshall & Sterling Wealth Advisors Inc.69$5.94K0.00%
Wealth Preservation Advisors, LLC46$3.96K0.00%
Activest Wealth Management33$2.84K0.00%
Hughes Financial Services, LLC25$2.17K0.00%
Ogorek Anthony Joseph25$2.00K0.00%
Rialto Wealth Management, LLC23$1.98K0.00%
Dogwood Wealth Management LLC20$1.73K0.00%
CBIZ Investment Advisory Services, LLC17$1.48K0.00%
Hantz Financial Services, Inc.7$1.00K0.00%
American Capital Advisory, LLC7$6030.00%
Greenline Partners, LLC7$6020.00%
Bear Mountain Capital, Inc.4$3630.00%
GoalVest Advisory LLC4$3440.00%

Sold out (144)

Institutions that held Iron Mountain Inc at the end of Q4 2024 and filed for Q1 2025 without it.

Showing the largest 100 of 144 by value.

Institutions that sold out of IRM in Q1 2025
InstitutionShares, Q4 2024Value, Q4 2024
Agf Management Ltd2,133,904$224.3M
Eventide Asset Management, LLC373,863$39.3M
Churchill Management Corp173,539$18.2M
Bamco Inc90,138$9.47M
Concentric Capital Strategies, LP86,377$9.08M
Parallax Volatility Advisers, L.P.80,698$8.48M
MinichMacGregor Wealth Management, LLC73,663$7.74M
Quantitative Investment Management, LLC63,416$6.67M
Mizuho Markets Americas LLC55,775$5.86M
Achmea Investment Management B.V.42,770$4.50M
Chapin Davis, Inc.34,819$4.14M
Terra Nova Asset Management LLC32,890$3.46M
Laurion Capital Management LP30,626$3.22M
GSI Capital Advisors LLC26,029$2.74M
Acadian Asset Management LLC22,027$2.31M
Dorsey Wright & Associates21,641$2.27M
Twin Tree Management, LP19,989$2.10M
Marshall Wace, LLP18,374$1.93M
Green Alpha Advisors, LLC15,971$1.68M
Railway Pension Investments Ltd15,800$1.66M
Herbst Group, LLC13,975$1.47M
Coppell Advisory Solutions LLC14,026$1.45M
Proequities, Inc.12,293$1.35M
Lombard Odier Asset Management (Switzerland) SA11,965$1.26M
IMC-Chicago, LLC10,973$1.15M
iA Global Asset Management Inc.10,505$1.10M
Highland Capital Management, LLC9,852$1.04M
HRT Financial LP9,500$998.0K
Axecap Investments, LLC9,149$961.7K
Twinbeech Capital LP9,094$955.9K
Virtus ETF Advisers LLC8,983$944.2K
Versor Investments LP8,707$915.2K
Allstate Corp8,513$894.8K
Fig Financial Advisory Services Inc8,502$893.7K
Bridgefront Capital, LLC8,340$876.6K
Ibex Wealth Advisors7,908$831.2K
Prelude Capital Management, LLC7,471$785.3K
Madden Securities Corp7,300$767.3K
Pinkerton Retirement Specialists, LLC7,165$753.1K
Strategy Asset Managers LLC7,084$744.6K
Harvest Fund Management Co., Ltd6,571$691.0K
Hartford Funds Management Co LLC6,082$639.3K
Goldstone Financial Group, LLC5,852$615.1K
Williamson Legacy Group, LLC5,834$613.2K
Retireful, LLC5,423$570.0K
Secure Asset Management, LLC5,358$563.1K
Canada Post Corp Registered Pension Plan4,957$521.0K
Freestone Grove Partners LP4,936$518.8K
Moneta Group Investment Advisors LLC4,931$518.3K
OneAscent Financial Services LLC4,751$501.0K
Groupe la Francaise4,808$500.2K
Scotia Capital Inc.4,618$485.7K
Atomi Financial Group, Inc.4,559$479.1K
Ontario Teachers Pension Plan Board4,131$434.2K
Balboa Wealth Partners4,031$423.7K
Sienna Gestion3,844$404.0K
Trustmark National Bank Trust Department3,593$377.7K
Stevens Capital Management LP3,564$375.0K
Callan Family Office, LLC3,461$363.8K
Cresset Asset Management, LLC3,317$348.7K
Johnson Investment Counsel Inc3,231$339.6K
Core Wealth Partners LLC3,127$328.6K
Yeomans Consulting Group, Inc.3,104$326.3K
OneAscent Wealth Management LLC3,039$319.0K
Apriem Advisors3,000$315.3K
Capital City Trust Co2,940$309.0K
Alethea Capital Management, LLC2,884$303.1K
LMR Partners LLP2,847$299.2K
Schechter Investment Advisors, LLC2,846$299.1K
NorthCrest Asset Manangement, LLC2,826$297.0K
Clark Capital Management Group, Inc.2,776$291.8K
BSW Wealth Partners2,723$286.2K
Kovack Advisors, Inc.2,542$267.2K
Personal Cfo Solutions, LLC2,446$257.1K
Nwam LLC2,436$256.1K
Twelve Points Wealth Management LLC2,404$252.7K
Bristlecone Advisors, LLC2,394$251.6K
Texas Bank & Trust Co2,334$245.3K
Gsa Capital Partners LLP2,329$245.0K
Wesbanco Bank Inc2,329$244.8K
Strategic Financial Concepts, LLC2,308$242.6K
Mayflower Financial Advisors, LLC2,306$242.4K
Pegasus Asset Management, Inc.2,300$241.8K
Ignite Planners, LLC2,286$241.6K
Scientech Research LLC2,282$239.9K
Naples Global Advisors, LLC2,250$238.1K
Commerzbank Aktiengesellschaft2,280$237.0K
Bingham Private Wealth, LLC2,241$235.6K
Mystic Asset Management, Inc.2,226$234.1K
Financial Sense Advisors, Inc.2,216$232.9K
Community Bank & Trust, Waco, Texas2,200$231.0K
HBK Sorce Advisory LLC2,130$223.8K
Stiles Financial Services Inc2,127$223.6K
XTX Topco Ltd2,124$223.3K
Anb Bank2,116$222.4K
New Century Financial Group, LLC2,099$221.9K
Clayton Financial Group LLC2,102$220.9K
FNY Investment Advisers, LLC2,100$220.0K
Sagespring Wealth Partners, LLC2,086$219.2K
Mission Creek Capital Partners, Inc.2,085$219.2K

Not filed for Q1 2025 yet (16)

Institutions that held Iron Mountain Inc at the end of Q4 2024 and haven't filed a 13F for Q1 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding IRM in Q4 2024 that haven't filed for Q1 2025
InstitutionShares, Q4 2024Value, Q4 2024
Nuveen Asset Management, LLC2,548,970$267.9M
Swedbank AB288,938$30.4M
Madison Investment Advisors, LLC24,369$2.56M
Eagle Ridge Investment Management19,702$2.07M
Wetherby Asset Management Inc9,230$970.2K
Sherman Porfolios, LLC7,476$785.8K
Global Retirement Partners, LLC7,345$772.1K
Private Portfolio Partners LLC4,480$470.9K
Buckingham Capital Management, Inc.3,483$366.1K
Geller Advisors LLC3,288$347.9K
TrinityPoint Wealth, LLC3,194$335.7K
Oliver Lagore Vanvalin Investment Group500$52.6K
WR Wealth Planners, LLC328$34.5K
AlphaMark Advisors, LLC291$31.0K
Zions Bancorporation, N.A.229$24.1K
Cassady Schiller Wealth Management, LLC19$2.00K