PE Ratio: 133.58

Basis: Latest stored market observation. Source: stored company filings and market data; unavailable inputs remain N/A.

The P/E ratio is 133.58 as of Monday, August 10, 2026.

PE Ratio (133.58) = Close Price ($122.39) / Diluted TTM EPS ($0.92)

IRM PE Ratio Metrics

P/E vs. its own history

At 133.6, P/E is above its 20-year median — higher than 89% of readings in its 20-year history.

P/E Comparison

PE Ratio Formula & Definition

PE Ratio = Share Price / Diluted EPS (TTM)

The price-to-earnings ratio measures how much investors pay for each dollar of trailing earnings. A lower PE can indicate a cheaper valuation; a higher PE implies higher growth expectations.

Expanded definitions: Investopedia, Wikipedia, Corporate Finance Institute

PE Ratio FAQ

What is the P/E ratio for Iron Mountain Incorporated (IRM)?

The P/E ratio for IRM stock is 133.58.

What is the TTM average P/E ratio for Iron Mountain Incorporated (IRM)?

The TTM average P/E ratio for IRM stock is 171.93.

What is the 3Y average P/E ratio for Iron Mountain Incorporated (IRM)?

The 3Y average P/E ratio for IRM stock is 158.51.

What is the 5Y average P/E ratio for Iron Mountain Incorporated (IRM)?

The 5Y average P/E ratio for IRM stock is 103.47.

What is the 10Y average P/E ratio for Iron Mountain Incorporated (IRM)?

The 10Y average P/E ratio for IRM stock is 70.19.

What is the 15Y average P/E ratio for Iron Mountain Incorporated (IRM)?

The 15Y average P/E ratio for IRM stock is 45.16.

What is the 20Y average P/E ratio for Iron Mountain Incorporated (IRM)?

The 20Y average P/E ratio for IRM stock is 40.51.

Showing the most recent 260 of 4,842 data points. The chart above shows the full history.

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