Iron Mountain Incorporated (IRM) P/E Ratio History
Historical price-to-earnings valuation from 1999 to 2026
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IRM Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of May 6, 2026, Iron Mountain Incorporated (IRM) trades at a price-to-earnings ratio of 268.8x, with a stock price of $131.70 and trailing twelve-month earnings per share of $0.91.
The current P/E is 108% above its 5-year average of 129.1x. Over the past five years, IRM's P/E has ranged from a low of 19.8x to a high of 711.3x, placing the current valuation at the 90th percentile of its historical range.
Compared to the Real Estate sector median P/E of 24.1x, IRM trades at a 1013% premium to its sector peers. The sector includes 170 companies with P/E ratios ranging from 1.1x to 165.1x.
Relative to the broader market, IRM commands a significant premium over the S&P 500 median P/E of 25.1x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our IRM DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
IRM P/E vs Peers
P/E ratio compared to closely matched public peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $30B | 30.5 | 7.00 | +14% | |
| $52B | 33.2 | 4.45 | -15% | |
| $9B | 26.8 | 2.35 | -15% | |
| $3B | 59.9 | 10.46 | -41% | |
| $6B | 178.0 | - | -75% | |
| $7B | 26.1Lowest | 12.80 | +40% | |
| $8B | 41.3 | 3.75 | -28% | |
| $68B | 54.9 | 1.89Best | +122%Best | |
| $106B | 78.4 | 2.91 | +62% |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
IRM Historical P/E Data (1999–2026)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Date | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2026 Q1 | $102.14 | $0.91 | 112.2x | +45% | |
| FY2025 Q4 | Wed Dec 31 2025 00:00:00 GM | $82.95 | $0.48 | 171.3x | +121% |
| FY2025 Q3 | $101.94 | $0.53 | 190.8x | +146% | |
| FY2025 Q2 | Mon Jun 30 2025 00:00:00 GM | $102.57 | $0.14 | 711.3x | +817% |
| FY2025 Q1 | Mon Mar 31 2025 00:00:00 GM | $86.04 | $0.41 | 207.7x | +168% |
| FY2024 Q4 | $105.11 | $0.61 | 172.3x | +122% | |
| FY2024 Q3 | Mon Sep 30 2024 00:00:00 GM | $118.83 | $0.36 | 333.3x | +330% |
| FY2024 Q2 | Sun Jun 30 2024 00:00:00 GM | $89.62 | $0.78 | 115.4x | +49% |
| FY2024 Q1 | Sun Mar 31 2024 00:00:00 GM | $80.21 | $0.66 | 122.1x | +57% |
| FY2023 Q4 | Sun Dec 31 2023 00:00:00 GM | $69.98 | $0.63 | 111.6x | +44% |
| FY2023 Q3 | Sat Sep 30 2023 00:00:00 GM | $59.45 | $0.95 | 62.6x | -19% |
| FY2023 Q2 | Fri Jun 30 2023 00:00:00 GM | $56.82 | $1.30 | 43.7x | -44% |
Average P/E for displayed period: 77.5x
Full IRM Stock Analysis
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Start ComparisonIRM — Frequently Asked Questions
Quick answers to the most common questions about buying IRM stock.
Is IRM stock overvalued or undervalued?
IRM trades at 268.8x P/E, above its 5-year average of 129.1x. The 90th percentile ranking indicates a premium to historical valuation.
How does IRM's valuation compare to peers?
Iron Mountain Incorporated P/E of 268.8x compares to sector median of 24.1x. The premium reflects expected growth above peers.
What is IRM's PEG ratio?
IRM PEG ratio is N/A. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 1999-2026.