Quick Answer
IRON MOUNTAIN INC reported Total Assets of $21.13 billion for fiscal year 2025.
IRON MOUNTAIN INC Total Assets — Annual History
| Fiscal Year | Total Assets | YoY Change |
|---|---|---|
| 2025 | $21.13B | +12.9% |
| 2024 | $18.72B | +7.1% |
| 2023 | $17.47B | +8.3% |
| 2022 | $16.14B | +11.7% |
| 2021 | $14.45B | +2.1% |
| 2020 | $14.15B | +2.4% |
| 2019 | $13.82B | +16.5% |
| 2018 | $11.86B | +8.0% |
| 2017 | $10.98B | +15.7% |
| 2016 | $9.49B | +49.4% |
| 2015 | $6.35B | -2.6% |
| 2014 | $6.52B | -1.3% |
| 2013 | $6.61B | +3.9% |
| 2012 | $6.36B | +5.2% |
| 2011 | $6.04B | -5.8% |
| 2010 | $6.42B | -6.3% |
| 2009 | $6.85B | — |
Quarterly Total Assets
| Quarter Ending | Total Assets | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | $20.63B | +11.7% | +2.3% |
| June 30, 2025 | $20.18B | +12.3% | +4.2% |
| March 31, 2025 | $19.36B | +8.6% | +3.4% |
| December 31, 2024 | $18.72B | +7.1% | +1.3% |
| September 30, 2024 | $18.47B | +9.4% | +2.8% |
| June 30, 2024 | $17.97B | +7.7% | +0.8% |
| March 31, 2024 | $17.83B | +8.3% | +2.0% |
| December 31, 2023 | $17.47B | +8.3% | +3.5% |
- IRON MOUNTAIN INC showed an increase of +12.9% in Total Assets compared to the prior fiscal year.
- Over the 2009–2025 period, IRON MOUNTAIN INC’s total assets has grown by 208.3% (from $6.85 billion to $21.13 billion).
- The most recent figure is from IRON MOUNTAIN INC’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 12, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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