Iron Mountain (IRM) - Market capitalization

Market cap: C$51.40 Billion

As of May 2026 Iron Mountain has a market cap of C$51.40 Billion. This makes Iron Mountain the world's 666th 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 2026

End of year Market Cap

Year	Marketcap	Change
2026	C$51.40 B	54.89%
2025	C$33.18 B	-24.74%
2024	C$44.09 B	62.71%
2023	C$27.10 B	37.82%
2022	C$19.66 B	1.84%
2021	C$19.31 B	78.27%
2020	C$10.83 B	-9.42%
2019	C$11.95 B	-5.4%
2018	C$12.64 B	-5.31%
2017	C$13.35 B	16.1%
2016	C$11.49 B	45.22%
2015	C$7.91 B	-15.88%
2014	C$9.41 B	52.21%
2013	C$6.18 B	5.42%
2012	C$5.86 B	0.88%
2011	C$5.81 B	16.27%
2010	C$5.00 B	2.61%
2009	C$4.87 B	-19.62%
2008	C$6.06 B	-17.53%
2007	C$7.35 B	15.04%
2006	C$6.39 B	-1.23%
2005	C$6.47 B	36.13%
2004	C$4.75 B	8.31%
2003	C$4.38 B	-1.01%
2002	C$4.43 B	13.03%
2001	C$3.92 B	27.23%
2000	C$3.08 B	67.82%
1999	C$1.83 B	94.59%
1998	C$0.94 B	67.4%
1997	C$0.56 B

End of Day market cap according to different sources

On May 14th, 2026 the market cap of Iron Mountain was reported to be:

C$52.31 Billion

by Nasdaq

C$52.30 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Automatic Data Processing ADP	C$117.77 B	129.10%	🇺🇸 USA
Cintas CTAS	C$93.05 B	81.02%	🇺🇸 USA
Equifax EFX	C$26.27 B	-48.89%	🇺🇸 USA
Fiserv FISV	C$40.45 B	-21.31%	🇺🇸 USA
Moody's MCO	C$103.99 B	102.30%	🇺🇸 USA
Tradeweb TW	C$33.33 B	-35.16%	🇺🇸 USA
Pitney Bowes PBI	C$2.92 B	-94.31%	🇺🇸 USA
Dun & Bradstreet DNB	C$5.61 B	-89.07%	🇺🇸 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: C$51.40 Billion