Iron Mountain (IRM) - Market capitalization

Market cap: S$32.56 Billion

As of December 2025 Iron Mountain has a market cap of S$32.56 Billion. This makes Iron Mountain the world's 912th 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	S$32.56 B	-22.04%
2024	S$41.77 B	54.79%
2023	S$26.98 B	38.9%
2022	S$19.42 B	-5.16%
2021	S$20.48 B	82.26%
2020	S$11.23 B	-8.96%
2019	S$12.34 B	-2.63%
2018	S$12.67 B	-10.74%
2017	S$14.20 B	14.68%
2016	S$12.38 B	53.37%
2015	S$8.07 B	-24.66%
2014	S$10.71 B	45.61%
2013	S$7.36 B	2.03%
2012	S$7.21 B	-2.55%
2011	S$7.40 B	14.87%
2010	S$6.44 B	-0.9%
2009	S$6.50 B	-8.81%
2008	S$7.13 B	-32.76%
2007	S$10.60 B	25.99%
2006	S$8.41 B	-9.04%
2005	S$9.25 B	43.33%
2004	S$6.45 B	12.32%
2003	S$5.74 B	18.01%
2002	S$4.87 B	6.86%
2001	S$4.55 B	27.8%
2000	S$3.56 B	68.17%
1999	S$2.12 B	109.19%
1998	S$1.01 B	52.34%
1997	S$0.66 B

End of Day market cap according to different sources

On Dec 4th, 2025 the market cap of Iron Mountain was reported to be:

S$32.55 Billion

by Nasdaq

S$32.56 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Equifax EFX	S$33.72 B	3.56%	🇺🇸 USA
Cintas CTAS	S$96.08 B	195.04%	🇺🇸 USA
Automatic Data Processing ADP	S$136.15 B	318.08%	🇺🇸 USA
Pitney Bowes PBI	S$2.19 B	-93.27%	🇺🇸 USA
Dun & Bradstreet DNB	S$5.28 B	-83.76%	🇺🇸 USA
Fiserv FI	S$44.46 B	36.53%	🇺🇸 USA
Tradeweb TW	S$30.54 B	-6.20%	🇺🇸 USA
Moody's MCO	S$113.75 B	249.30%	🇺🇸 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: S$32.56 Billion