Iron Mountain

IRMNYSE United States Real Estate Real Estate Investment Trusts

Market cap

$36.067 B

$121.15 -0.66%

Close of 7 Aug 2026

Revenue

$6.90B

#538 by revenue

Earnings

—

Not reported

Shares outstanding

297,702,812

Latest filing cover page

P/E ratio

—

Cap ÷ net income

Real Estate Investment Trusts — ranked by market cap

All 179 →

#8Public StoragePSA$57.7B
#9VentasVTR$47.9B
#10Iron MountainIRM$36.1B
#11Crown CastleCCI$32.2B
#12Extra Space StorageEXR$31.6B

Where these numbers come from

Share counts and financials for Iron Mountain are taken from its own SEC filings via EDGAR — public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 9 Aug 2026. Read the methodology.