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Iron Mountain Incorporated (Delaware)Common Stock REITStock · Real EstateUS REITs 2.0% · S&P 500 Equal Weight 0.2% · S&P 500 0.06% · Russell 1000 0.05% · Russell 3000 0.05% · US Stock Market 0.05% · MSCI World 0.04% · MSCI ACWI 0.04%
$115.18+2.02%
as of market close, Sep 11, 2026
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Iron Mountain Incorporated (Delaware)Common Stock REIT returns by year

Through September 11, 2026

Iron Mountain Incorporated (Delaware)Common Stock REIT returns by year (1997–2026)#

Iron Mountain Incorporated (Delaware)Common Stock REIT annual returns by year
YearTotal return
2026YTD
+40.9%
2025
-18.2%
2024
+54.5%
2023
+46.5%
2022
-0.1%
2021
+87.7%
2020
+1.0%
2019
+5.9%
2018
-8.0%
2017
+23.6%
2016
+27.5%
2015
-25.7%
2014
+61.7%
2013
+1.3%
2012
+16.8%
2011
+26.8%
2010
+11.6%
2009
-8.0%
2008
-33.2%
2007
+34.3%
2006
-2.1%
2005
+38.5%
2004
+15.7%
2003
+19.8%
2002
+13.0%
2001
+18.0%
2000
-5.6%
1999
+9.0%
1998
+50.3%
1997
+19.0%
Annualized
+16.7%
1997–2026
Average year
+16.6%
29 full years
Best year
+87.7%
2021
Worst year
-33.2%
2008
Positive years
21/29
72% up

Total return by period#

Annual

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. Past performance does not predict future returns; not investment advice.

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 16.7% a year (the compound annual growth rate) and an average calendar-year return of 16.6%.
What were Iron Mountain Incorporated (Delaware)Common Stock REIT's best and worst years?
Over 1997–2026, the best year was 2021 (+87.7%) and the worst was 2008 (-33.2%).
How often is Iron Mountain Incorporated (Delaware)Common Stock REIT up in a year?
21 of the 29 full years since 1997 were positive — about 72% of the time.

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