Iron Mountain (IRM) Market Cap 1997–2026

As of October 29, 2026, Iron Mountain had a market cap of $35.24 billion, which increased by 2.35% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.

Data updated: Oct 29, 2026, 4:00 PM ET
Iron Mountain logo

Iron Mountain Inc. (IRM)

🌍 United States 📈 NYSE 🏭 Real Estate 🏢 Specialized REITs
Latest Market Cap
$35.24B ▲ 2.35%
Start of 2026
$24.52B ▲ 43.72%
1 Year Ago
$29.92B ▲ 17.78%
All-Time High
$39.58B ▼ 10.97%


Loading data...

Note: Each point on the chart represents the market capitalization at the end of the trading day.
Source: Data compiled from EDGAR filings, Bloomberg and Yahoo Finance.

📈 Iron Mountain Market Cap History by Year and Month

Iron Mountain Market Cap History by Year and Month
Year / MonthMarket Cap% Change
2026$35.24B▲ 43.72%
$35.24B▲ 6.69%
$33.03B▼ 3.81%
$34.34B▼ 5.63%
$36.39B▼ 3.14%
$37.57B▼ 1.55%
$38.16B▲ 2.39%
$37.27B▲ 23.33%
$30.22B▼ 5.71%
$32.05B▲ 17.70%
$27.23B▲ 11.05%
2025$24.52B▼ 20.54%
2024$30.859B▲ 51.03%
2023$20.433B▲ 41.00%
2022$14.492B▼ 4.43%
All market cap values reflect closing prices for the period shown.

📊 Iron Mountain Market Cap and Other Industry Peers

Below are selected companies from the Real Estate sector / subsector:

  1. $102.29B
  2. $86.28B
  3. $67.68B
  4. $59.24B
  5. $44.27B
  6. $37.84B
  7. $37.08B
  8. $35.24B
  9. $31.31B
  10. $27B
  11. $19.61B
  12. $17.6B
  13. $17.05B
  14. $16.15B
  15. $14.23B
  16. $11.49B
  17. $9.26B
  18. $5.72B
  19. $4.47B
  20. $4.34B

Data reflect the most recent market capitalization values available.

Note: Market capitalization figures are based on available sources and may differ slightly from actual values, particularly for historical data.