Iron Mountain IRM Book value per share
Book value per share at other companies
Other financials
Where this comes from
Calculated from Iron Mountain’s reported figures.
Based on the most recent quarter.
The official record: Iron Mountain’s 10-Q, filed April 30, 2026, on SEC EDGAR. View the filing →
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Questions, answered.
- What is Iron Mountain's book value per share?
- Iron Mountain (IRM) reported book value per share of -$4.07 in Q1 2026.
- How has Iron Mountain's book value per share changed year-over-year?
- Iron Mountain's book value per share decreased by 73.0% year-over-year, from -$2.35 to -$4.07.
- What is the long-term trend for Iron Mountain's book value per share?
- Over 4 years (2021 to 2025), Iron Mountain's book value per share has grown at a -4.6% compound annual growth rate (CAGR), from $13.54 to -$11.20.
- What does book value per share mean?
- The accounting net worth of the company behind each share.
- How do you interpret book value per share?
- A steadily rising book value per share reflects retained earnings compounding into equity. Compare against the share price (price-to-book) to gauge how the market values that book equity.
- How does book value per share compare across companies?
- Most meaningful for asset- and equity-heavy businesses (financials, industrials); less informative for asset-light firms whose value is intangible.