AMT vs IRM
American Tower and Iron Mountain, both Real Estate
American Tower is the larger company at $82B against $38B. On trailing earnings AMT is the cheaper of the two at a P/E of 25.0 against 81.8, a gap that is only a bargain if the two are growing at similar rates. Over the past year IRM returned +19% against -1.9% for AMT.
| Figure | AMT | IRM |
|---|---|---|
| Last close | $182 | $115 |
| Market cap | $82B | $38B |
| Trailing P/Elower is cheaper for the same earnings, not automatically better | 25.0 | 81.8 |
| Dividend yield | 4.0% | 2.9% |
| 1-year return | -1.9% | +19% |
| 5-year return | -28% | +195% |
Figures from SEC filings and end-of-day closes. Highlighting marks the higher or lower number, which is not the same as the better investment, a low P/E can be a warning and a high one can be deserved.
American Tower
Revenue of $2.7B in Q2 2026, net income $888M. Its largest reported line is Property, 93% of the disclosed total.
Iron Mountain
Revenue of $2.0B in Q2 2026, net income $106M. Its largest reported line is Storage Rental, 49% of the disclosed total.
Open these two in the interactive comparison to add more names, change the period or see the correlation.