| IRM Market Cap History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the IRM market cap history going back to 2/20/2015:
Also see: IRM Shares Outstanding History and IRM YTD Return |
IRM Market Cap History — Iron Mountain Capitalization Over Time
As of 4/24/2026 Iron Mountain has a market cap of 34.52 billion. Investors often follow the IRM market cap history to compare the size of the company over time.
This page shows IRM market capitalization trends over time, with 45 market cap datapoints presented, dating back to 2/20/2015.
| IRM Market Cap History Chart | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
IRM Historical Market Cap: +14.35% CAGR 
Mouse over chart for data details
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| IRM Stock Price Chart |
| About Iron Mountain Inc (New) |
| Iron Mountain Inc is a provider of information management services. Co. offers a range of services, including digital transformation, data centers, secure records storage, information management, asset lifecycle management, secure destruction, and art storage and logistics. Co. helps businesses to unlock value and intelligence from their stored digital and physical assets. It serves to protect its customers' work. Its segments include Global Records and Information Management (Global RIM) Business and Global Data Center Business. We show 45 historical shares outstanding datapoints in our IRM shares outstanding history coverage, used to compute IRM market cap on those dates. Understanding the changing numbers of shares outstanding, the changing share price, and the resulting changing IRM market cap history over the course of time is important for investors interested in comparing IRM's market cap history versus its peers. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies, and then calculating their respective market caps. Comparing the share price of IRM versus a peer is one thing; comparing IRM market cap versus a peer is a completely different story. Furthermore, via fluctuation both in per-share price and in the number of shares outstanding (via issuance of new shares over time, the repurchase of existing shares), the market cap for a company like IRM can fluctuate over the course of history. With this page we aim to empower investors researching IRM by allowing them to research the IRM market cap history. |
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| Video: The Importance of Market Cap | |
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Video: The Importance of Market Cap
| IRM Share Performance |
| Market Cap Peers |
| Iron Mountain (IRM) is categorized under the Technology sector; to help you further research historical market cap numbers, below are some other companies in the same sector:
IRNT Market Cap History ISNS Market Cap History ISSC Market Cap History ITI Market Cap History ITRI Market Cap History IVDA Market Cap History JAMF Market Cap History JCOM Market Cap History JCS Market Cap History JKHY Market Cap History More Technology companies » |
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