Iron Mountain Incorporated IRM
111.38
(2.71)
(2.38%)
as of 25 Sep
- Market cap
- $34.0B
- P/E
- 79.6×
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S&P 500 Member
Dividend Champion (10y)
Cash Flow Champion (3y)
Revenue Champion (5y)
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Iron Mountain Incorporated (IRM) Shares outstanding
Iron Mountain Incorporated's shares outstanding at the end of fiscal 2025 was $297.8M, unchanged from fiscal 2024. At the end of the quarter to 30 June 2026 it was $299.8M. Over the past ten years it has ranged from $212.1M (fiscal 2015) to $297.8M (fiscal 2025) — the current reading is the highest in ten years. Iron Mountain Incorporated ranks 7th of 18 Reit Specialty companies by shares outstanding.
Shares outstanding, annual
Annual
| Period | Shares outstanding | Change |
|---|---|---|
| FY2025 | $297.8M | 0.53% |
| FY2024 | $296.2M | 0.77% |
| FY2023 | $294.0M | 0.52% |
| FY2022 | $292.4M | 0.50% |
| FY2021 | $291.0M | 0.81% |
| FY2020 | $288.6M | 0.33% |
| FY2019 | $287.7M | 0.36% |
| FY2018 | $286.7M | 7.42% |
| FY2017 | $266.8M | 7.92% |
| FY2016 | $247.3M | 16.57% |
Quarterly
| Period | Shares outstanding | Change |
|---|---|---|
| Jun 2026 | $299.8M | 0.34% |
| Mar 2026 | $298.8M | 0.34% |
| Dec 2025 | $297.8M | (0.06%) |
| Sep 2025 | $298.0M | 0.89% |
| 42 more quarters | Free account |
Against its own ten years
Low $212.1M
High $297.8M
Ten-year median
$288.6M
Current reading's percentile
100
Shares outstanding against peers
| Company | Shares outstanding |
|---|---|
| WY Weyerhaeuser Company compare | $721.9M |
| AMT American Tower Corporation compare | $466.3M |
| CCI Crown Castle Inc. compare | $434.0M |
| DLR Digital Realty Trust, Inc. compare | $361.5M |
| IRM Iron Mountain Incorporated | $299.8M |
| GLPI Gaming and Leisure Properties, Inc. compare | $285.9M |
| SBAC SBA Communications Corporation compare | $106.3M |
| LAMR Lamar Advertising Company compare | $101.6M |
| EQIX Equinix, Inc. compare | $99.1M |
What Shares outstanding is
Shares (Diluted, Weighted) tells an investor how many shares a company’s earnings are spread across once potential new shares are counted.
Reported line item
More on IRM
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- Net income
- EBITDA
- Free cash flow
- Operating cash flow
- Gross margin
- Operating margin
- Net margin
- Free cash flow margin
- P/E ratio
- P/S ratio
- P/B ratio
- Price to free cash flow
- EV/EBITDA
- EV/Sales
- Return on equity
- Return on assets
- Return on invested capital
- Debt to equity
- Current ratio
- Total debt
- Book value per share
- Revenue growth
- The full statement