Start with its own history
At 30.00×, IRM is 59.0% below its 10-observation annual average. A lower multiple can reflect a lower price, higher earnings, or weaker growth expectations—not necessarily a bargain.
NYSE · IRMREIT - SpecialtyUpdated Nov 4, 2026
Iron Mountain Incorporated P/E ratio
Current valuation, historical context, and peer comparisons.
Current P/E ratio
30.00×
59.0% belowthe 10-year annual average
Share price118.81
÷Earnings per share3.96
Price and EPS in quote currency. Calculation details
Investors are paying 30.00 for every 1 of reported earnings per share.
P/E over time
2016 – 2025
Annual P/ESelected-period average 73.12×
3-year average150.89×3 positive annual observations
5-year average102.44×5 positive annual observations
10-year average73.12×10 positive annual observations
Peer median · TTM68.48×2 peers with positive P/E
Historical P/E ratios
Annual period-end data · 25 observations
| Period end | P/E | Change |
|---|---|---|
| Dec 31, 2025 | 169.29× | -1.8% |
| Dec 31, 2024 | 172.31× | +55.1% |
| Dec 31, 2023 | 111.08× | +327.8% |
| Dec 31, 2022 | 25.96× | -22.6% |
| Dec 31, 2021 | 33.54× | +35.4% |
| Dec 31, 2020 | 24.77× | -27.7% |
| Dec 31, 2019 | 34.27× | +34.3% |
| Dec 31, 2018 | 25.52× | -56.7% |
View all 25 annual observations +
| Period end | P/E | Change |
|---|---|---|
| Dec 31, 2017 | 58.95× | -22.0% |
| Dec 31, 2016 | 75.53× | +62.2% |
| Dec 31, 2015 | 46.57× | +101.2% |
| Dec 31, 2014 | 23.15× | -61.1% |
| Dec 31, 2013 | 59.51× | +89.7% |
| Dec 31, 2012 | 31.36× | +106.7% |
| Dec 31, 2011 | 15.17× | N/M |
| Dec 31, 2010 | N/M | N/M |
| Dec 31, 2009 | 20.88× | -65.4% |
| Dec 31, 2008 | 60.32× | +25.5% |
| Dec 31, 2007 | 48.08× | +13.4% |
| Dec 31, 2006 | 42.40× | -14.1% |
| Dec 31, 2005 | 49.39× | +19.0% |
| Dec 31, 2004 | 41.49× | +3.9% |
| Dec 31, 2003 | 39.93× | -15.6% |
| Dec 31, 2002 | 47.32× | N/M |
| Dec 31, 2001 | N/M | N/M |
Change is relative to the preceding observation. N/M values are excluded from averages.
How IRM compares
Company P/E vs. peer trailing-12-month ratios
| Company | P/E ratio |
|---|---|
 IRM This stockIron Mountain Incorporated | 30.00× |
 DLRDigital Realty Trust, Inc. | 73.95× |
 EQIXEquinix, Inc. | 63.01× |
 VNETVNET Group, Inc. | N/M |
 BLZEBackblaze, Inc. | N/M |
 RXTRackspace Technology, Inc. | N/M |
Peers are selected by the data provider. Business models and earnings definitions can differ.
Put the numbers in context
What does IRM’s P/E tell you?
Compare like with like
The median of the 2 positive peer ratios above is 68.48×. Check growth, margins, debt, and earnings quality before interpreting the gap. A faster-growing business may justify a higher multiple.
Check what drives earnings
One-off gains can temporarily lower P/E; unusual charges can raise it. Reported earnings and forward estimates answer different questions. Pair this view with return on equity and liquidity for a fuller picture.
Keep your research connected
Take IRM into your spreadsheet
Pull historical P/E into Excel or Google Sheets with Wisesheets. Build your own comparisons alongside the rest of your financial model.
Explore WisesheetsQuarterly P/E · latest quarterLQ selects the latest reported quarter. Requires the Wisesheets add-in. See available data
=WISE("IRM", "PE Ratio", "LQ")Sources & calculation methodology
Current P/E
Share price 118.81 ÷ EPS 3.96 = 30.00×. Data is supplied by Financial Modeling Prep through Wisesheets. Quote feed updated Nov 4, 2026; this is not a real-time trading quote.
History & averages
Annual and quarterly P/E observations are provided separately from the current quote. Averages use the latest 3, 5, or 10 annual observations, excluding missing and nonpositive ratios. Pre-IPO observations are omitted. These are period-end observations, not daily averages.
Data definitions and limitations
The current quote feed does not specify the exact EPS filing-period end or whether EPS is basic or diluted. We do not label it as forward P/E. Peer ratios are explicitly trailing-12-month (TTM) values. Historical observations do not include independently verified price and EPS inputs. Sources may update on different schedules; rounded inputs can produce small calculation differences. Historical comparisons describe past pricing, not an estimate of fair value.
IRM P/E ratio: common questions
The essentials behind the numbers.
Iron Mountain Incorporated's current P/E is 30.00× based on the quote data last updated Nov 4, 2026. It represents the share price divided by reported earnings per share. Prices and earnings may refresh on different schedules.
Annual P/E uses earnings for a completed fiscal year. Trailing-12-month (TTM) P/E uses the latest four quarters, while forward P/E uses forecast earnings. These are not interchangeable. This page labels peer ratios as TTM and shows dated annual or quarterly historical observations; it does not show forward estimates.
N/M means not meaningful: the feed has no positive P/E for that observation. Negative or zero earnings should not be ranked as a low positive valuation multiple. N/M observations are excluded from the averages shown above.
Divide the share price by earnings per share (EPS). For example, a share price of 100 and EPS of 5 gives a P/E of 20×. This page uses the price and EPS supplied together in the quote when both are positive.
Price timestamps, EPS definitions, share classes, adjustments, and fiscal periods can differ. A forward P/E also uses forecast earnings rather than reported earnings. Compare the inputs and as-of dates before comparing two displayed ratios.
Not necessarily. The average describes previous market pricing, not fair value. Changes in earnings quality, growth expectations, debt, accounting, and business risk can justify a different multiple today.