Iron Mountain's book value per share for the quarter that ended in Mar. 2026 was $-4.08.
Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the book value growth rate using book value per share data.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Iron Mountain was 72.00% per year. The lowest was -43.20% per year. And the median was 3.30% per year.
Iron Mountain's current price is $121.51. Its book value per share for the quarter that ended in Mar. 2026 was $-4.08. Hence, today's PB Ratio of Iron Mountain is .
During the past 13 years, the highest P/B Ratio of Iron Mountain was 1422.54. The lowest was 3.81. And the median was 7.41.
Iron Mountain (NYSE:IRM) Book Value per Share Explanation
Usually a company's book value and Tangible Book per Share may not reflect its true value. The assets may be carried on the balance sheets at the original cost minus depreciation. This may underestimate the true economic values of the assets. It also may over-estimate their true economic value because the assets can become obsolete.
For financial companies such as banks and insurance companies, their assets may be reported in current market value of the assets owned. Book values of financial companies are more accurate indicator of the economic value of the company.
Iron Mountain Book Value per Share Related Terms
Iron Mountain Book Value per Share Historical Data
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The historical data trend for Iron Mountain's Book Value per Share can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
IRM vs CCI, SBAC, WY: Book Value per Share Comparison
For the REIT - Specialty subindustry, Iron Mountain's PB Ratio, along with its competitors' market caps and PB Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Iron Mountain PB Ratio vs REITs Industry
For the REITs industry and Real Estate sector, Iron Mountain's PB Ratio distribution charts can be found below:
* The bar in red indicates where Iron Mountain's PB Ratio falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Iron Mountain (IRM) has a Book Value per Share of $-4.08 as of Mar. 2026. Book value per share gives the per-share value of a company's stockholder equity. View historical data on Iron Mountain and its competitors.
Is Iron Mountain's Book Value per Share too high?
Iron Mountain's current Book Value per Share is $-4.08. Overall, Iron Mountain has a GF Score™ of 85/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Iron Mountain's Book Value per Share compare to CCI and SBAC?
Iron Mountain's Book Value per Share of $-4.08 can be compared against companies in the REITs industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Book Value per Share for a REITs company?
A good Book Value per Share depends on the REITs industry context. However, Book Value per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Book Value per Share mean?
A high Book Value per Share can signal that a stock is expensive relative to its fundamentals. Book value per share gives the per-share value of a company's stockholder equity. View historical data on Iron Mountain and its competitors. Iron Mountain's current Book Value per Share is $-4.08. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Iron Mountain stock overvalued right now?
Based on GuruFocus' analysis, Iron Mountain (IRM) is currently considered Modestly Overvalued. The stock's GF Value™ is $108.02, compared to a current price of $121.51 — trading 12.5% above its estimated fair value. The current Book Value per Share is $-4.08. Iron Mountain's overall GF Score™ is 85/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Book Value per Share calculated?
Book Value per Share is calculated from a company's financial statements. For Iron Mountain (IRM), the current Book Value per Share is $-4.08 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Iron Mountain (IRM) Overvalued in 2026?
Based on GuruFocus' analysis, Iron Mountain stock appears to be overvalued.
The current stock price of $121.51 is trading 12.5% above its estimated GF Value™ of $108.02.
GuruFocus considers Iron Mountain to be Modestly Overvalued.
Key valuation signals for IRM:
Book Value per Share: $-4.08
GF Value™: $108.02 vs. price of $121.51 (12.5% above fair value)
No single metric tells the full story. See the IRM stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Iron Mountain Inc is an information management services provider organized and operated as a real estate investment trust. The company offers solutions to its clients to address their information management, digital transformation, information security, data center, and asset lifecycle management (ALM) needs. Its customers come from various industries, including commercial, legal, financial, healthcare, technology, etc. The company has two reportable segments: Global Records and Information Management (Global RIM) and Global Data Center. Maximum revenue is generated from the Global RIM segment, which offers data and records management, secure shredding, consumer storage, and other related services. Geographically, the company generates maximum revenue from the United States.
85GF Score
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Book Value per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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