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Closing prices for 09 October 2026
Next earnings report: 04 November 2026 · Earnings calendar
The series is stated in the current share scale after splits; dividends are not included in the price
Iron Mountain Incorporated (Delaware)Common Stock REIT trades on NYSE under the ticker IRM. The company belongs to the Real estate sector. The trading history on this page starts on 22 August 2016.
Over the past 52 weeks IRM has traded between 77.77 $ and 134.68 $. As of 09 October 2026 the price stood 64.56 % of the way from the 52-week low to the high.
Over one year IRM shares rose 8.65 %; over six months they rose 4.70 %. Volatility over 90 days is 30.47 %. Dividends are not included: this is price change only, as of 09 October 2026.
IRM trades at a price-to-earnings ratio of 124, above the sector median of 23.2. Price to sales is 4.6, above the sector median of 3.9. Calculated from reports for the period ending 31 March 2026.
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| 09 October 2026 | 113.70 | 115.03 | 113.03 | 114.51 | 1M |
| 08 October 2026 | 115.34 | 115.63 | 110.46 | 112.97 | 2M |
| 07 October 2026 | 115.34 | 116.58 | 114.79 | 115.75 | 1M |
| 06 October 2026 | 113.96 | 117.41 |
Based on the last 12 months of reports, through 31 March 2026
The sector median covers every company in the sector on the US market, loss-making ones included.
Iron Mountain stores corporate documents in secure warehouses and builds data centres on the same foundation.
The paper archive is a business with a rare property: a box is deposited once and paid for monthly for decades. Destroying an archive is more expensive and riskier than continuing to pay, so churn is exceptionally low and prices can be raised with inflation without losing volume.
The second line is data centres, into which the company channels archive profits. The logic is the same: a long lease, a reliable tenant, growing demand. The difference is that this requires capital and faces real competitors. The trust form obliges distributing profit, hence sensitivity to rates. The company pays a high dividend.
Address:85 NEW HAMPSHIRE AVENUE, SUITE 150 PEASE INTERNATIONAL TRADEPORT, PORTSMOUTH, NH, 03801, US
Iron Mountain Incorporated (Delaware)Common Stock REIT reported revenue of 7.2B $ and net income of 272M $ over the last four quarters. Net margin is 3.76 %. Revenue changed by +15.64 % year over year. Earnings per share are 0.92 $. Market capitalisation is 33.7B $.
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| 113.96 |
| 116.50 |
| 1M |
| 05 October 2026 | 113.32 | 114.13 | 112.05 | 112.33 | 2M |
| 02 October 2026 | 112.77 | 114.74 | 112.15 | 113.39 | 2M |
| 01 October 2026 | 110.72 | 111.58 | 108.96 | 111.13 | 2M |
| 30 September 2026 | 112.00 | 112.46 | 109.31 | 110.95 | 2M |
| 29 September 2026 | 110.58 | 112.34 | 110.57 | 111.50 | 2M |
| 28 September 2026 | 110.90 | 112.27 | 109.65 | 111.05 | 1M |
| 25 September 2026 | 113.82 | 114.50 | 110.72 | 111.38 | 1M |
| 24 September 2026 | 114.56 | 115.06 | 113.18 | 114.09 | 1M |
| 23 September 2026 | 115.75 | 117.32 | 114.79 | 115.09 | 2M |
| 22 September 2026 | 116.45 | 118.47 | 116.45 | 118.13 | 2M |
| 21 September 2026 | 115.48 | 117.14 | 114.39 | 116.89 | 1M |
| 18 September 2026 | 114.40 | 114.73 | 112.61 | 114.34 | 3M |
| 17 September 2026 | 113.79 | 114.87 | 113.45 | 114.00 | 2M |
| 16 September 2026 | 112.85 | 115.30 | 111.99 | 112.15 | 2M |
| 15 September 2026 | 111.11 | 113.23 | 109.13 | 112.04 | 2M |
| 14 September 2026 | 113.26 | 114.20 | 110.50 | 112.06 | 1M |