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IRM
Iron Mountain Incorporated (Delaware)Common Stock REITStock · Real EstateS&P 500 0.1%
$128.36+$3.81 (+3.06%)as of market close, Jul 24, 2026
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IRM returns by year

Iron Mountain Incorporated (Delaware)Common Stock REIT has returned +13.3% annually (CAGR) since 1997. Calendar-year, monthly and weekly total returns for Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) below, through July 24, 2026 — the most recent year is year-to-date.

Annualized (CAGR)
+13.3%
1997–2026
Average year
+12.5%
29 full years
Best year
+77.5%
2021
Worst year
-33.2%
2008
Positive years
18/29
62% up

Iron Mountain Incorporated (Delaware)Common Stock REIT returns by year (19972026)#

Calendar-year returns with each year's path and its dividend contribution (dividend return = total minus price return).

Iron Mountain Incorporated (Delaware)Common Stock REIT annual returns by year
YearTotal return
2026YTD
+54.7%
2025
-21.1%
2024
+50.2%
2023
+40.4%
2022
-4.7%
2021
+77.5%
2020
-7.5%
2019
-1.7%
2018
-14.1%
2017
+16.2%
2016
+20.3%
2015
-30.1%

Total return by period

-50%+0%+50%
'97'00'03'06'09'12'15'18'21'24

Methodology#

Returns are total returns (dividends reinvested), computed from IRM's split- and dividend-adjusted closes. The bar chart switches between annual and monthly periods. Annualized return is the compound annual growth rate over the full period. The current year is year-to-date. See also the periodic table of returns. 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 annual return?
Since 1997, Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) has returned about 13.3% a year (the compound annual growth rate) and an average calendar-year return of 12.5%.
What were Iron Mountain Incorporated (Delaware)Common Stock REIT's best and worst years?
Over 1997–2026, the best year was 2021 (+77.5%) and the worst was 2008 (-33.2%).
How often is Iron Mountain Incorporated (Delaware)Common Stock REIT up in a year?
18 of the 29 full years since 1997 were positive — about 62% of the time.