Iron Mountain’s first-quarter results look exceptional on the surface, and in many respects they are. But a closer reading of the numbers reveals a growth story that is partly dependent on conditions that have already begun to shift, making this a quarter that raises as many questions about durability as it answers about momentum. In the first quarter of 2026, Iron Mountain reported revenue of $1.94 billion, up 21.6% year over year, with organic revenue growth of 17.2%, its highest organic rate in more than a quarter century. Adjusted EBITDA rose 22.1% to $708 million, and adjusted funds from operations climbed 22% to $426 million. Growth was concentrated in what the company calls its “growth businesses” — data centers, digital solutions and Asset Lifecycle Management (ALM) — which collectively expanded more than 50% year over year and now account for more than 30% of total revenue.
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