$128.36+$3.81 (+3.06%)as of market close, Jul 24, 2026
IRM monthly returns
Iron Mountain Incorporated (Delaware)Common Stock REIT has averaged 1.21% per month, positive in 54% of months. Month-by-month returns for Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) below, through July 24, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.
Average month
+1.2%
355 months
Best month
+33.5%
Dec 1999
Worst month
-25.8%
Jun 2013
Positive months
54%
of all months
Iron Mountain Incorporated (Delaware)Common Stock REIT monthly returns#
| Month | Path | Total return |
|---|---|---|
| Jul 2026 | +1.2% | |
| Jun 2026 | -1.1% | |
| May 2026 | +1.8% | |
| Apr 2026 | +23.4% | |
| Mar 2026 | -5.7% | |
| Feb 2026 | +17.6% | |
| Jan 2026 | +11.1% | |
| Dec 2025 | -3.9% | |
| Nov 2025 | -16.1% | |
| Oct 2025 | +1.0% | |
| Sep 2025 | +10.4% | |
| Aug 2025 | -5.2% |
Monthly total return (since Aug 2021)
-20%-10%+0%+10%+20%
20222023202420252026
Methodology#
Monthly returns are total returns (dividends reinvested), computed from IRM's split- and dividend-adjusted month-end closes. The table shows the most recent 120 months and the bar chart the most recent 60. See the year-by-year returns for the annual view. Past performance does not predict future returns; not investment advice.
See also: S&P 500 · Nasdaq-100 · Dow Jones · Russell 2000 · US Bond Market · Gold · Silver · Bitcoin · Ethereum
FAQ
- What is Iron Mountain Incorporated (Delaware)Common Stock REIT's average monthly return?
- Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) has averaged about 1.21% per month, positive in roughly 54% of months. The best month was Dec 1999 (+33.5%) and the worst was Jun 2013 (-25.8%).