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Iron Mountain price to book ratio IRM

Market value divided by the book value of the company's net assets, since 2010.

Today, Oct 23, 2026
n/m
not a meaningful number
Last meaningful
107×
Apr 2024
10-year median
7.3×
10-year range
3.8× to 112×
Peer median
2.5×

Iron Mountain's price to book ratio is not a meaningful number today: shareholders' equity was zero, negative or not reported, so price to book does not exist.

It was last meaningful in Apr 2024, at 107×.

On the days it had one over the last ten years, its median was 7.3×, from 3.8× in Mar 2018 to 112× in Mar 2024.

Price to book ratio over time

The dashed line is the 10-year median and the shaded band the middle half of its days.

Open the interactive chart, with overlays and comparisons

Year by year

YearEnd of yearLowHigh
2024107×74.2×112×
202377.8×23.0×77.8×
202227.4×12.8×30.2×
202115.6×8.8×15.6×
20209.1×4.3×9.3×
20196.0×4.9×6.4×
20184.8×3.8×5.3×
20175.4×4.1×5.9×
20164.0×3.9×17.6×
20159.4×8.4×17.4×
201416.9×4.8×16.9×
20135.5×4.4×6.8×
20124.1×3.3×4.9×
20113.4×2.5×3.5×
20102.6×1.9×2.6×

Against its peers

Companies in REIT - Specialty nearest Iron Mountain's size, closest first, today.

CompanyPrice to book ratio
IRMIron Mountainn/m
CCICrown Castlen/m
VMRKVivmark Residential4.5×
SBACSBA Communicationsn/m
HSTHost Hotels & Resorts2.7×
DLRDigital Realty Trust2.3×
KIMKimco Realty1.5×
LAMRLamar Advertising16.0×
WPCW. P. Carey1.7×
WYWeyerhaeuser1.5×
OHIOmega Healthcare Investors2.6×
Peer median2.5×

What the price to book ratio tells you

Market value divided by the accounting value of the company's net assets. Below 1 means the market values the business at less than what it owns on paper.

Book value misses brands, software and people, so asset-light companies always look expensive on it. Most useful for banks and industrials.

More on Iron Mountain

Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.