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IRON MOUNTAIN INC
IRM - Company ID 0001020569
Market cap$35.55 B
Rank#420
Filings2,724
Market capitalization of IRON MOUNTAIN INC
As of 2026-07-09, IRON MOUNTAIN INC (IRM) has a market capitalization of $35.55 B, making it the #420 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-07-09 | $35.55 B |
| 2026-07-08 | $34.35 B |
| 2026-07-07 | $34.44 B |
| 2026-07-06 | $34.53 B |
| 2026-07-05 | $34.86 B |
| 2026-07-04 | $34.86 B |
| 2026-07-03 | $34.86 B |
| 2026-07-02 | $34.88 B |
| 2026-07-01 | $36.27 B |
| 2026-06-30 | $37.25 B |
| 2026-06-29 | $38.34 B |
| 2026-06-28 | $39.40 B |
Market Cap of similar companies
Frequently asked questions
What is IRON MOUNTAIN INC's market cap?
As of 2026-07-09, IRON MOUNTAIN INC (IRM) has a market capitalization of $35.55 B, making it the #420 most valuable US-listed company.
Where does IRON MOUNTAIN INC rank by market cap?
IRON MOUNTAIN INC is the #420 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.