Iron Mountain (IRM) Seasonality
Recurring seasonal patterns for IRM — the calendar windows where Iron Mountain has historically tended to rise or fall, with the win rate (how often it repeated) and average return for each, based on the last 10 years of price history.
IRM seasonality at a glance
Over the last 10 years, IRM's strongest seasonal window has been Aug 13 – Sep 12: it ended higher in 10 of 10 years (100% win rate) with an average return of +4.53% across a 30-day hold. On the weak side, IRM has historically declined between Dec 7 – Jan 6, falling in 9 of 10 years (average -3.11%).
In total, our analysis finds 760 recurring seasonal windows for Iron Mountain — 598 bullish and 162 bearish. The next high-win-rate window, Jul 28 – Aug 7, opens tomorrow. These figures describe historical behaviour only — not a forecast.
IRM's upcoming & recent seasonal patterns
Holding period:10-day20-day30-dayOrdered by season — windows opening soon first, plus a couple of recently completed high-performers. Holding-period colors help you compare durations at a glance.
| Status | Seasonal window | Hold | Avg return | Win rate | This year |
|---|---|---|---|---|---|
| Completedended 4d ago | Jul 13 – Jul 23 | 10d | +1.28% | 80% | +1.78% |
| Completedended 32d ago | May 26 – Jun 25 | 30d | +3.12% | 80% | +2.77% |
| Active30d left | Jul 27 – Aug 26 | 30d | +4.96% | 80% | — |
| Upcomingtomorrow | Jul 28 – Aug 7 | 10d | +2.50% | 80% | — |
| Upcomingtomorrow | Jul 28 – Aug 27 | 30d | +5.06% | 80% | — |
| Upcomingin 2d | Jul 29 – Aug 8 | 10d | +2.06% | 80% | — |
| Upcomingin 2d | Jul 29 – Aug 28 | 30d | +4.83% | 80% | — |
Win rate = how often the pattern repeated in the same direction. Average return = the mean move across all analysed years. Past performance does not guarantee future results.
Explore IRM seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
IRM seasonality FAQ
What has historically been the best month to buy IRM stock?
Based on the last 10 years of price data, IRM's strongest seasonal window starts in August: Aug 13 to Sep 12, which ended higher in 10 of 10 years (100% win rate) with an average return of +4.53%. Past seasonal patterns do not guarantee future performance.
What is IRM's strongest seasonal pattern?
IRM's highest-win-rate pattern in our data is the Aug 13 – Sep 12 window (30-day hold): up in 10 of the last 10 years with an average move of +4.53%.
When has IRM historically performed worst?
IRM's weakest recurring window has been Dec 7 to Jan 6, declining in 9 of 10 years with an average return of -3.11%.
How reliable are IRM's seasonal patterns?
Each IRM pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. IRM currently shows 760 recurring windows (598 bullish, 162 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is IRM stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing Iron Mountain's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where IRM has repeatedly risen (bullish) or fallen (bearish). Each pattern is scored by its win rate and average return so you can judge how reliable and how strong it has been.
Seasonality is one input among many — it works best alongside your own research and risk management. Learn more in our guide to seasonal analysis and the tutorials.