Iron Mountain (IRM) - Market capitalization

Market cap: A$37.02 Billion

As of December 2025 Iron Mountain has a market cap of A$37.02 Billion. This makes Iron Mountain the world's 937th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Iron Mountain from 1997 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	A$37.02 B	-25.07%
2024	A$49.40 B	64.73%
2023	A$29.99 B	40.83%
2022	A$21.29 B	1.9%
2021	A$20.90 B	89.17%
2020	A$11.04 B	-15.52%
2019	A$13.07 B	-0.72%
2018	A$13.17 B	-3.15%
2017	A$13.60 B	14.58%
2016	A$11.87 B	51.5%
2015	A$7.83 B	-20.94%
2014	A$9.91 B	52.17%
2013	A$6.51 B	14.73%
2012	A$5.67 B	1.82%
2011	A$5.57 B	13.19%
2010	A$4.92 B	-4.48%
2009	A$5.15 B	-27.05%
2008	A$7.06 B	-16.15%
2007	A$8.43 B	21.05%
2006	A$6.96 B	-8.33%
2005	A$7.59 B	48.53%
2004	A$5.11 B	12.36%
2003	A$4.55 B	-8.65%
2002	A$4.98 B	3.27%
2001	A$4.82 B	31.08%
2000	A$3.68 B	89.88%
1999	A$1.93 B	93.29%
1998	A$1.00 B	65.53%
1997	A$0.60 B

End of Day market cap according to different sources

On Dec 12th, 2025 the market cap of Iron Mountain was reported to be:

A$37.01 Billion

by Nasdaq

A$37.02 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

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Automatic Data Processing ADP	A$161.98 B	337.52%	🇺🇸 USA
Pitney Bowes PBI	A$2.64 B	-92.85%	🇺🇸 USA
Dun & Bradstreet DNB	A$6.13 B	-83.43%	🇺🇸 USA
Fiserv FI	A$51.56 B	39.28%	🇺🇸 USA
Tradeweb TW	A$35.18 B	-4.96%	🇺🇸 USA
Moody's MCO	A$131.14 B	254.24%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of Iron Mountain (IRM)

Market cap: A$37.02 Billion