Question 1

What is Iron Mountain's P/E ratio?

Accepted Answer

Iron Mountain (IRM) P/E ratio is 136.6× as of July 22, 2026. The ratio is calculated by dividing market capitalisation by trailing twelve-month earnings (net income), using USD-normalised financials (IAS 21 exchange-rate translation for non-USD reporters).

Question 2

How is the P/E ratio calculated?

Accepted Answer

P/E = Share Price ÷ Trailing Twelve-Month (TTM) Diluted EPS, or equivalently Market Capitalisation ÷ TTM Net Income. All inputs are sourced from audited GAAP/IFRS filings and translated to USD using period-end exchange rates so the multiple is comparable across companies and currencies.

Question 3

What is the P/E ratio?

Accepted Answer

The price-to-earnings (P/E) ratio, also called the earnings multiple, measures how much investors pay per dollar of a company's trailing twelve-month (TTM) earnings. It is calculated as share price ÷ TTM diluted EPS (equivalent to market capitalisation ÷ TTM net income). A higher P/E implies the market is pricing in stronger future earnings growth or lower risk; a lower P/E can signal slower expected growth, higher risk, or potential undervaluation.

Question 4

What is a good P/E ratio for Iron Mountain?

Accepted Answer

There is no universal "good" P/E. As a rule of thumb, the S&P 500 has historically averaged a P/E in the mid-to-high teens; mature, slow-growth businesses commonly trade in the 10–18× range, while high-growth or asset-light companies often trade at 25–50×+. What matters is the comparison to sector peers and to the company's own historical range. For Iron Mountain specifically, the relevant sector benchmark is the current sector median of 28.1×.

Question 5

Is Iron Mountain's P/E ratio high or low?

Accepted Answer

Iron Mountain's P/E ratio of 136.6× is above its own 5-year average of 129.7× and above the sector median of 28.1×. That places the current reading at the 61th percentile of its 10-year history. A higher multiple usually reflects stronger expected growth, lower perceived risk, or higher returns on capital; a lower multiple reflects the opposite.

Question 6

What is Iron Mountain's historical P/E ratio range?

Accepted Answer

In the available daily series, Iron Mountain (IRM) P/E ratio has ranged from a low of 13.1× in 2012 to a high of 760.6× in 2025. The 5-year average is 129.7× and the 5-year median is 86.7×.

Question 7

What was Iron Mountain's P/E ratio in 2025?

Accepted Answer

Iron Mountain (IRM) P/E ratio at the end of 2025 was 171.0×. Annual values reflect the multiple on the last trading day of each calendar year, using the trailing twelve-month earnings figure available at that date.

Question 8

Why does Iron Mountain's P/E ratio change over time?

Accepted Answer

Valuation multiples move with two inputs: the numerator (market capitalisation, which tracks the share price) and the denominator (earnings). Share-price changes — driven by interest rates, earnings expectations, risk appetite, and broader market sentiment — typically dominate short-term moves, while changes in the underlying fundamental drive the longer-term trend. As a result, the ratio can rise during stock-price rallies even if the business itself has not become more valuable, and fall during sell-offs even when fundamentals are improving.


2025	$24.7B	$145M	171.0×	-0.2×	Dec 31, 2025
2024	$30.8B	$180M	171.2×	+60.1×	Dec 31, 2024
2023	$20.5B	$184M	111.0×	+85.0×	Dec 31, 2023
2022	$14.5B	$557M	26.1×	-7.6×	Dec 31, 2022
2021	$15.2B	$450M	33.7×	+8.9×	Dec 31, 2021
2020	$8.5B	$343M	24.8×	-9.4×	Dec 31, 2020
2019	$9.16B	$267M	34.2×	+8.5×	Dec 31, 2019
2018	$9.28B	$360M	25.7×	-31.4×	Dec 31, 2018
2017	$10.5B	$184M	57.1×	-24.6×	Dec 31, 2017
2016	$8.56B	$105M	81.7×	+35.4×	Dec 31, 2016
2015	$5.7B	$123M	46.3×	+22.2×	Dec 31, 2015
2014	$7.87B	$326M	24.1×	-35.9×	Dec 31, 2014
2013	$5.82B	$96.9M	60.0×	+27.5×	Dec 31, 2013
2012	$5.59B	$172M	32.6×	+19.2×	Dec 31, 2012
2011	$5.28B	$396M	13.3×	—	Dec 31, 2011
2010	$5.01B	-$53.9M	—	—	Dec 31, 2010
2009	$4.63B	$221M	21.0×	-39.9×	Dec 31, 2009
2008	$4.99B	$82M	60.8×	+12.3×	Dec 31, 2008
2007	$7.42B	$153M	48.5×	+6.0×	Dec 31, 2007
2006	$5.48B	$129M	42.5×	-5.0×	Dec 31, 2006
2005	$5.54B	$117M	47.6×	+5.6×	Dec 31, 2005
2004	$3.95B	$94.2M	41.9×	+2.0×	Dec 31, 2004
2003	$3.38B	$84.6M	39.9×	-3.5×	Dec 31, 2003
2002	$2.81B	$64.7M	43.4×	—	Dec 31, 2002


Digital Realty Trust (DLR)	45.1×
Weyerhaeuser (WY)	44.4×
Agree Realty (ADC)	41.1×
Mid-America Apartment Communities (MAA)	36.5×
Tanger (SKT)	31.0×
CBRE Group (CBRE)	30.4×
Prologis (PLD)	30.0×
Extra Space Storage (EXR)	29.3×
STAG Industrial (STAG)	28.2×
American Tower (AMT)	28.0×
Camden Property Trust (CPT)	26.4×
BXP (BXP)	26.0×
Invitation Homes (INVH)	25.8×
Public Storage (PSA)	25.0×
Kimco Realty (KIM)	24.5×
UDR (UDR)	22.5×
Regency Centers (REG)	22.1×
NNN REIT (NNN)	20.5×
AvalonBay Communities (AVB)	20.0×
SBA Communications (SBAC)	17.9×
Host Hotels & Resorts (HST)	13.1×
Simon Property Group (SPG)	12.9×
Arbor Realty Trust (ABR)	12.6×
VICI Properties (VICI)	9.4×
Apartment Investment and Management (AIV)	1.0×

P/E Ratio for Iron Mountain (IRM) 2002-2026

P/E Ratio daily chart for Iron Mountain (IRM)

Historical P/E Ratio for Iron Mountain (IRM) from 2002 to 2025

About P/E Ratio at Iron Mountain (IRM)

Iron Mountain P/E Ratio by Year

Iron Mountain P/E Ratio 2025: 171.0×

Iron Mountain P/E Ratio 2024: 171.2×

Iron Mountain P/E Ratio 2023: 111.0×

Iron Mountain P/E Ratio 2022: 26.1×

Iron Mountain P/E Ratio 2021: 33.7×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

Iron Mountain (IRM) Key Financials