Iron Mountain (IRM) - Market capitalization

Market cap: NZ$43.58 Billion

As of December 2025 Iron Mountain has a market cap of NZ$43.58 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	NZ$43.58 B	-20.01%
2024	NZ$54.49 B	68.64%
2023	NZ$32.31 B	41.55%
2022	NZ$22.82 B	2.9%
2021	NZ$22.18 B	88.41%
2020	NZ$11.77 B	-13.4%
2019	NZ$13.59 B	-1.73%
2018	NZ$13.83 B	-7.47%
2017	NZ$14.95 B	21.04%
2016	NZ$12.35 B	48.11%
2015	NZ$8.34 B	-19.44%
2014	NZ$10.35 B	46.43%
2013	NZ$7.06 B	-1.42%
2012	NZ$7.17 B	-2.1%
2011	NZ$7.32 B	12.94%
2010	NZ$6.48 B	1.68%
2009	NZ$6.37 B	-25.78%
2008	NZ$8.59 B	-10.69%
2007	NZ$9.62 B	23.48%
2006	NZ$7.79 B	-4.18%
2005	NZ$8.13 B	46.61%
2004	NZ$5.54 B	6.57%
2003	NZ$5.20 B	-2.97%
2002	NZ$5.36 B	-9.54%
2001	NZ$5.93 B	27.69%
2000	NZ$4.64 B	90.52%
1999	NZ$2.43 B	109.18%
1998	NZ$1.16 B	71.3%
1997	NZ$0.68 B

End of Day market cap according to different sources

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

NZ$43.56 Billion

by Nasdaq

NZ$43.58 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

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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: NZ$43.58 Billion