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Assessing Iron Mountain (IRM) Valuation After Data Center Concerns And Short Seller Scrutiny

Simply Wall St·04/04/2026 11:22:17
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Iron Mountain (IRM) is back in focus after Baron Real Estate Income Fund exited its position, citing weak new data center bookings and a short report raising questions about accounting adjustments and leverage.

See our latest analysis for Iron Mountain.

The recent short report and softer data center bookings have not stopped the stock’s momentum, with a 24.10% year to date share price return and a 38.52% 1 year total shareholder return. However, the 30 day share price return of 3.73% suggests that near term enthusiasm has cooled.

If this kind of mixed sentiment around a single name has you thinking about broader opportunities, it could be worth scanning for 20 top founder-led companies

So with strong multi year total returns, ongoing questions around data center growth and accounting, and shares trading at a discount to analyst price targets and intrinsic value estimates, is there still a buying opportunity here, or is future growth already priced in?

Most Popular Narrative: 35.4% Undervalued

At a last close of $103.30 against a narrative fair value of $160.00, the current price sits well below what this thesis argues Iron Mountain is worth.

While physical storage is mature, it remains highly sticky and cash generative. At the same time, digital solutions and data center operations are growing faster and increasing the company’s long-term relevance.

Read the complete narrative.

Want to see how a mature records business is being used to fund a higher growth digital and data center platform? The key tension in this narrative is how recurring legacy cash flows, projected digital growth and future margins interact to justify a much higher fair value. Curious which assumptions really do the heavy lifting in that $160.00 figure?

Result: Fair Value of $160.00 (UNDERVALUED)

Have a read of the narrative in full and understand what's behind the forecasts.

However, two pressure points stand out: slower or more volatile data center bookings, and any renewed scrutiny of accounting or leverage that dents confidence in those cash flows.

Find out about the key risks to this Iron Mountain narrative.

Next Steps

With sentiment clearly split between long term potential and the risk list, it makes sense to move fast and weigh the evidence for yourself by checking the 3 key rewards and 4 important warning signs

Looking for more investment ideas?

If Iron Mountain has you thinking harder about where your money is working hardest, do not stop here. Broaden your watchlist before the next move passes you by.

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.

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