Market Cap

Iron Mountain Incorporated Market Capitalization:

$29.71 Billion

USD as of July 1, 2025

business Iron Mountain Incorporated Company Profile

Iron Mountain Incorporated Main Stock Listing

NYSE: IRM

Market Capitalization History of Iron Mountain Incorporated

Market capitalizations are calculated from the opening stock price at the beginning of each month.

Top Competitors by Market Capitalization

Industry: REIT—Specialty
Company Market Cap (USD)
American Tower $103.81 B
Equinix, Inc. (REIT) $77.78 B
Crown Castle International Corp. (REIT) $44.93 B
SBA Communications Corporation $25.13 B
Weyerhaeuser Company $19.36 B
Sector: Real Estate
Company Market Cap (USD)
American Tower $103.81 B
Prologis, Inc. $100.50 B
Welltower Inc. $98.56 B
Equinix, Inc. (REIT) $77.78 B
Simon Property Group, Inc. $62.88 B

Yearly evolution of Iron Mountain Incorporated market cap

Date Market Cap YoY Change
Jan. 1, 2025 $32.67 B 68.07%
Jan. 1, 2024 $19.43 B 36.57%
Jan. 1, 2023 $14.23 B 9.44%
Jan. 1, 2022 $13.00 B 36.38%
Jan. 1, 2021 $9.53 B 6.52%
Jan. 1, 2020 $8.95 B -15.03%
Jan. 1, 2019 $10.53 B 6.19%
Jan. 1, 2018 $9.92 B -2.15%
Jan. 1, 2017 $10.14 B 29.99%
Jan. 1, 2016 $7.80 B -30.87%
Jan. 1, 2015 $11.28 B 63.22%
Jan. 1, 2014 $6.91 B -22.80%
Jan. 1, 2013 $8.95 B 11.00%
Jan. 1, 2012 $8.07 B 26.36%
Jan. 1, 2011 $6.38 B 6.69%
Jan. 1, 2010 $5.98 B 11.73%
Jan. 1, 2009 $5.35 B -40.51%
Jan. 1, 2008 $9.00 B 22.91%
Jan. 1, 2007 $7.32 B 0.70%
Jan. 1, 2006 $7.27 B 47.80%
Jan. 1, 2005 $4.92 B 1.61%
Jan. 1, 2004 $4.84 B 31.28%
Jan. 1, 2003 $3.69 B -1.06%
Jan. 1, 2002 $3.73 B 29.23%
Jan. 1, 2001 $2.88 B

Market capitalization is calculated from the opening stock price at the beginning of each year.

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Iron Mountain Incorporated Categories

United States languages Real Estate languages REIT—Specialty
United States Real Estate United States REIT—Specialty

Stocks & Indices

Iron Mountain Incorporated has the following listings and related stock indices.


Stock: NYSE: IRM

Stock: FSX: I5M

What is a company's market capitalization?

The market capitalization of a company, more simply referred to as "market cap", is the total market value of a publicly traded company's outstanding shares. It is often considered as a key indicator of what a company is worth.