Stocks Comparison
American Tower vs Iron Mountain: revenue, profit, margins and growth compared
American Tower brought in $10.6B of revenue in fiscal 2025, Iron Mountain $6.9B in fiscal 2025. Revenue changed by +5.1% at American Tower and +12.2% at Iron Mountain on the year before, so Iron Mountain grew faster. American Tower kept 23.8% of its revenue as net profit, Iron Mountain 2.1%. Free cash flow was $3.8B at American Tower and -$931.6M at Iron Mountain.
Side by side, latest fiscal year
| AMT | IRM | |
|---|---|---|
| Fiscal year ended | FY2025 (December 31, 2025) | FY2025 (December 31, 2025) |
| Revenue | $10.6B | $6.9B |
| Revenue growth | +5.1% | +12.2% |
| Net income | $2.5B | $144.6M |
| Net margin | 23.8% | 2.1% |
| Free cash flow | $3.8B | -$931.6M |
| Free cash flow margin | 35.5% | -13.5% |
| Earnings per share (diluted) | $5.40 | $0.49 |
| Cash | $1.5B | $158.5M |
| Debt | $3.4B | $16.4B |
| Price to earnings | 31.3 | 227.3 |
| Market value | $78.8B | $33.2B |
| Dividend yield | 3.98% | 2.89% |
| Rank by revenue in sector | #2 of 162 · Real estate | #5 of 162 · Real estate |
Over the years
Questions about American Tower and Iron Mountain
Which is bigger by revenue, American Tower or Iron Mountain?
American Tower is bigger by revenue: $10.6B in fiscal 2025, against $6.9B for Iron Mountain in fiscal 2025.
Which keeps more of its revenue as profit, American Tower or Iron Mountain?
American Tower had a net margin of 23.8% in fiscal 2025; Iron Mountain had 2.1% in fiscal 2025.
Which grew revenue faster, American Tower or Iron Mountain?
In their latest fiscal years revenue changed by +5.1% at American Tower and +12.2% at Iron Mountain.
Where do these numbers come from?
From the annual reports each company files with the SEC (10-K, or 20-F and 40-F for foreign companies), read from their XBRL data. Margins and growth are simple arithmetic on those figures. Nothing here is a recommendation.