Iron Mountain Incorporated (Delaware)Common Stock REIT trailing returns
Iron Mountain Incorporated (Delaware)Common Stock REIT's 10-year return is +19.7% a year (CAGR) (+504.9% cumulative). How Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) has performed over the last day, week, month and year, over 5, 10, 20 and 30 years, and since inception, through October 27, 2026 — price return and dividends side by side, with the worst drop inside each window.
Trailing returns by period#
To 2026-10-27. Price return + dividends = total return. Per year (CAGR) for windows of a year or more, with the cumulative total return beneath. Worst drop: the deepest fall in the price from a high inside the window, and when it bottomed.
| Period | Price | DivsDividends | Total | Worst drop |
|---|---|---|---|---|
| 1 day | +2.0% | +0.0% | +2.0% | — |
| 5 days | +2.0% | +0.0% | +2.0% | -4.1%Oct 23 |
| 1 month | +3.6% | +0.0% | +3.6% | -5.6%Oct 23 |
| YTD | +39.0% | +3.2% | +42.2% | -17.4%Oct 23 |
| 1 year | +8.3% | +3.6% | +12.0% | -25.9%Dec 2025 |
| 5 years | +20.4% | +4.6% | +25.0%+205.3% | -40.0%Apr 2025 |
| 10 years | +13.4% | +6.3% | +19.7%+504.9% | -48.1%Apr 2020 |
| 20 years | +7.7% | +5.7% | +13.4%+1137.0% | -55.7%Mar 2009 |
| 30 years | +10.8% | +3.9% | +14.7%+5967.3% | -55.7%Mar 2009 |
| Since inception (1996) | +12.7% | +3.9% | +16.5%+10905.7% | -55.7%Mar 2009 |
Growth of IRM#
Actual level with dividends reinvested (solid); dashed lines are each window's constant-rate path from start to today.
- 5 years+25.0%/year · +205.3%
- 10 years+19.7%/year · +504.9%
- 20 years+13.4%/year · +1137.0%
- 30 years+14.7%/year · +5967.3%
Methodology#
Trailing returns measure from the closest close about N years before the latest close (2026-10-27). Cumulative return is the total change over the window; annualized return is the compound annual growth rate (CAGR), shown for windows of a year or more. Price return is the change in IRM's closing price; total return reinvests dividends (from its split- and dividend-adjusted closes); the dividends column is the difference between the two. The worst drop is the largest fall in the closing price from a high to a later low inside the window, the way a drawdown is usually quoted. See the year-by-year returns for the calendar breakdown. Past performance does not predict future returns; not investment advice.
FAQ#
- What is Iron Mountain Incorporated (Delaware)Common Stock REIT's 10-year return?
- Over the last 10 years, Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) returned about +19.7% a year annualized (+504.9% cumulative total return).
- What is Iron Mountain Incorporated (Delaware)Common Stock REIT's 20-year annualized return?
- Over the last 20 years, Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) compounded at about +13.4% a year (+1137.0% cumulative).
- What is Iron Mountain Incorporated (Delaware)Common Stock REIT's 30-year annualized return?
- Over the last 30 years, Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) compounded at about +14.7% a year (+5967.3% cumulative).
- What is Iron Mountain Incorporated (Delaware)Common Stock REIT's return since inception?
- Since 1996, Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) has compounded at about +16.5% a year — +10905.7% in total.