Iron Mountain (IRM) just reported Q1 2026 results that caught investors' attention, with double digit revenue growth, a sharp jump in net income, and raised full year guidance across its information management platform.

The Q1 2026 update and raised guidance have coincided with strong momentum in the share price, with a 30 day share price return of 24.12% and year to date share price return of 54.04%. The 5 year total shareholder return of 275.10% points to a powerful longer term compounding story.

If strong execution in data infrastructure catches your eye, it may be worth widening your watchlist and checking out 38 AI infrastructure stocks

With the stock up sharply and trading only a fraction below the average analyst price target, the key question now is simple: does Iron Mountain still offer value, or is the market already pricing in years of future growth?

Most Popular Narrative: 19.9% Undervalued

At a last close of $128.22 versus a narrative fair value of $160.00, Iron Mountain is framed as materially undervalued, with the story centered on its shift from legacy storage to a broader information infrastructure platform.

Iron Mountain is deeply embedded in industries that cannot afford data loss, compliance failures, or audit gaps. Healthcare systems, banks, insurers, and government agencies require secure storage, retention management, and disaster recovery solutions. This regulatory dependence supports recurring demand and low customer churn.

Curious what justifies that higher fair value? The narrative leans heavily on recurring cash flows, a maturing digital mix, and data center economics that assume meaningful earnings expansion ahead.

Result: Fair Value of $160 (UNDERVALUED)

However, you should weigh the risk that growth in digital and data center services falls short of expectations, or that compliance-driven demand softens and limits the thesis.

Another View: Rich P/E Signals Pricing Power

That 19.9% discount to a $160 fair value sits alongside a very different message from the market. Iron Mountain trades on a P/E of 140.1x, compared with 22x for peers, 28.5x for the wider Specialized REITs group, and a fair ratio of 45.5x. That gap suggests investors are already paying a steep premium for growth and execution, so the real question is whether you think earnings can grow enough to close it.

For a closer look at how this valuation stacks up against peers and that fair ratio, start with See what the numbers say about this price — find out in our valuation breakdown.

Next Steps

Mixed messages on value and risk so far? Take a moment to look through the underlying data, then pressure test both sides with 3 key rewards and 4 important warning signs

Looking for more investment ideas?

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.