Iron Mountain Incorporated
Iron Mountain Incorporated partners with more than 240,000 customers across 61 countries, including approximately 95% of the Fortune 1000. They serve as the trusted guardians of what matters most, helping to unlock what's possible. By connecting physical, digital, and intelligent workflows, lifecycle solutions help organizations realize enterprise value on a scale. From complex challenges across information management and digital transformation to data security, data centers, and asset lifecycle management, the firm empower organizations to navigate an ever-changing landscape to prepare for tomorrow's possibilities. Their longstanding commitment to safety, security, sustainability, and continuous innovation defines everything they do. Iron Mountain Incorporated was founded in 1951 and is incorporated in Delaware and is based in Portsmouth, New Hampshire.
What does it do?
Iron Mountain is essentially a massive storage and security company — but for businesses, not households. Imagine a giant, climate-controlled warehouse where banks, hospitals, and law firms store millions of physical documents, backup tapes, and hard drives they can't just throw away. Beyond physical storage, Iron Mountain also runs data centers — the large buildings full of servers that power the internet and AI applications. If a Fortune 500 company needs to store sensitive files or run critical digital infrastructure, there's a good chance Iron Mountain is involved.
Iron Mountain sits at a rare crossroads: it has a boring, cash-generating legacy business in physical document storage, and a fast-growing data center business that's riding the AI infrastructure wave. Investors care right now because the explosion in demand for data centers — driven by AI companies needing massive computing power — gives Iron Mountain a growth engine that most traditional storage companies simply don't have. With $35B in market value and a growing footprint in 61 countries, it's become one of the more interesting real estate plays in the AI era.
How does it make money?
Iron Mountain makes money in two main ways. First, its records and information management business — the physical storage side — charges companies recurring fees to store and manage documents and tapes. This is slow-growing but incredibly sticky; customers almost never move their physical records once stored. Second, its data center business rents out server space and power to tech companies and enterprises, generating long-term lease revenue. Total revenue grew from $6.1B to $6.9B in the latest year, roughly 13% growth, with data centers being the faster-growing piece of the pie.
Why do investors care?
The growth story at Iron Mountain is really about the data center pivot. AI companies like Microsoft, Google, and Amazon need enormous amounts of physical space to run their servers, and Iron Mountain is actively building and leasing that space. If AI infrastructure spending continues to surge — which most analysts expect — Iron Mountain's data center segment could become a much larger share of its revenue over time. What has to go right: data center demand stays hot, Iron Mountain keeps winning big leases, and its heavy debt load (common for real estate companies) doesn't become a problem if interest rates stay elevated.
Deep Dive
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