Current
$36.1B
5-Year Average
$22.6B
All-Time High
$39.8B
All-Time Low
$1.84B
Market cap daily chart for Iron Mountain (IRM)
Aug 2, 2021 – Jul 29, 2026 · 1,253 trading days
Market Cap growth chart for Iron Mountain (IRM) from 2017 to 2026
Latest: +46.1%
Market Cap history table for Iron Mountain (IRM) from 1996 to 2026
| 2026 | $36.1B | +46.1% | +$11.4B | ||
| 2025 | $24.7B | -20.7% | -$6.43B | ||
| 2024 | $31.1B | +51.4% | +$10.6B | ||
| 2023 | $20.6B | +41.1% | +$5.99B | ||
| 2022 | $14.6B | -4.3% | -$648M | ||
| 2021 | $15.2B | +78.9% | +$6.72B | ||
| 2020 | $8.51B | -7.2% | -$659M | ||
| 2019 | $9.17B | -1.3% | -$122M | ||
| 2018 | $9.29B | -7.7% | -$778M | ||
| 2017 | $10.1B | +25.4% | +$2.04B | ||
| 2016 | $8.03B | +40.2% | +$2.3B | ||
| 2015 | $5.73B | -24.7% | -$1.88B | ||
| 2014 | $7.61B | +30.3% | +$1.77B | ||
| 2013 | $5.84B | +7.6% | +$410M | ||
| 2012 | $5.43B | -10.0% | -$605M | ||
| 2011 | $6.03B | +19.5% | +$983M | ||
| 2010 | $5.05B | +8.7% | +$403M | ||
| 2009 | $4.65B | -7.5% | -$378M | ||
| 2008 | $5.03B | -32.8% | -$2.45B | ||
| 2007 | $7.48B | +35.4% | +$1.96B | ||
| 2006 | $5.52B | -0.9% | -$51.9M | ||
| 2005 | $5.58B | +39.4% | +$1.58B | ||
| 2004 | $4B | +16.7% | +$572M | ||
| 2003 | $3.43B | +20.7% | +$587M | ||
| 2002 | $2.84B | +16.3% | +$398M | ||
| 2001 | $2.44B | +23.9% | +$471M | ||
| 2000 | $1.97B | +50.4% | +$661M | ||
| 1999 | $1.31B | +87.1% | +$610M | ||
| 1998 | $701M | +117.6% | +$379M | ||
| 1997 | $322M | -32.7% | -$156M | ||
| 1996 | $478M | — | — |
- 2026$36.1B+46.1%
- 2025$24.7B-20.7%
- 2024$31.1B+51.4%
- 2023$20.6B+41.1%
- 2022$14.6B-4.3%
- 2021$15.2B+78.9%
- 2020$8.51B-7.2%
- 2019$9.17B-1.3%
- 2018$9.29B-7.7%
- 2017$10.1B+25.4%
- 2016$8.03B+40.2%
- 2015$5.73B-24.7%
- 2014$7.61B+30.3%
- 2013$5.84B+7.6%
- 2012$5.43B-10.0%
- 2011$6.03B+19.5%
- 2010$5.05B+8.7%
- 2009$4.65B-7.5%
- 2008$5.03B-32.8%
- 2007$7.48B+35.4%
- 2006$5.52B-0.9%
- 2005$5.58B+39.4%
- 2004$4B+16.7%
- 2003$3.43B+20.7%
- 2002$2.84B+16.3%
- 2001$2.44B+23.9%
- 2000$1.97B+50.4%
- 1999$1.31B+87.1%
- 1998$701M+117.6%
- 1997$322M-32.7%
- 1996$478M—
Market Cap values are taken from Iron Mountain's reported income statements (share counts) and end-of-day prices (quarterly 10-Q and annual 10-K filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the filing date. YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.
About Market Cap at Iron Mountain (IRM)
According to Iron Mountain's latest reported financial statements, the company's latest reported market cap is $30.5B. Market capitalization is the total dollar value of all outstanding shares — shares outstanding × stock price — and the standard measure of a company's equity value. On this page, historical market cap snaps filing-period share counts to closing prices on or before each statement date (not intraday tick data).
Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .
As of the 2026 fiscal year, Iron Mountain (IRM) reported market cap of $36.1B – surged 46.1% year-over-year.
Iron Mountain market cap has grown on net over the period, with a +18.8% compound annual growth rate over 2021–2026 (5 years).
2026 marks the peak market cap at $36.1B, with the historical low of $322M recorded in 1997.
Iron Mountain Market Cap by Year
Iron Mountain Market Cap 2026: $36.1B
Iron Mountain market cap in 2026 was $36.1B, surged 46.1% from 2025. This figure represents the highest annual value in the available history.
Iron Mountain Market Cap 2025: $24.7B
2025's market cap for Iron Mountain came in at $24.7B, declined 20.7% below 2024.
Iron Mountain Market Cap 2024: $31.1B
Iron Mountain posted market cap of $31.1B in 2024, surged 51.4% from 2023.
Iron Mountain Market Cap 2023: $20.6B
In 2023, Iron Mountain reported market cap of $20.6B, surged 41.1% from 2022.
Iron Mountain Market Cap 2022: $14.6B
Iron Mountain market cap in 2022 was $14.6B.
See more financial history for Iron Mountain (IRM).
Sector peers by Market Cap
Real Estate peers of Iron Mountain (IRM), ranked by their latest market cap
| $170B | |
| $136B | |
| $99.4B | |
| $83.5B | |
| $76.4B | |
| $69.6B | |
| $61.4B | |
| $61.1B |
- $170B
- $136B
- $99.4B
- $83.5B
- $61.4B
- $61.1B
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Iron Mountain (IRM) Key Financials
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Deep-dives across the income statement, cash flow, capital return, and valuation
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- Stock Split History6 splits
How this company returns cash to shareholders — buybacks, dividends, and stock splits.