← All companies
IRON MOUNTAIN INC
IRM - CIK 0001020569
Market cap$37.04 B
Rank#405
SEC filings2,723
Market capitalization of IRON MOUNTAIN INC
As of 2026-06-11, IRON MOUNTAIN INC (IRM) has a market capitalization of $37.04 B, making it the #405 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-06-11 | $37.04 B |
| 2026-06-10 | $36.70 B |
| 2026-05-29 | $37.63 B |
| 2026-05-28 | $37.79 B |
| 2026-05-26 | $38.18 B |
| 2026-05-25 | $37.62 B |
| 2026-05-24 | $37.62 B |
| 2026-05-22 | $37.62 B |
Readings accumulate daily as market data refreshes, combining SEC-reported share counts with live prices.
Market Cap of similar companies
Frequently asked questions
What is IRON MOUNTAIN INC's market cap?
As of 2026-06-11, IRON MOUNTAIN INC (IRM) has a market capitalization of $37.04 B, making it the #405 most valuable US-listed company.
Where does IRON MOUNTAIN INC rank by market cap?
IRON MOUNTAIN INC is the #405 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.