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 28.4 against 86.7, a gap that is only a bargain if the two are growing at similar rates. Over the past year IRM returned +39% against -13% for AMT. Ryufin's sector-relative Smart Score puts AMT ahead, 7/10 against 4/10.
| Figure | AMT | IRM |
|---|---|---|
| Last close | $176 | $121 |
| Market cap | $82B | $38B |
| Trailing P/Elower is cheaper for the same earnings, not automatically better | 28.4 | 86.7 |
| Dividend yield | 3.8% | 2.7% |
| 1-year return | -13% | +39% |
| 5-year return | -27% | +237% |
| Ryufin Smart Scoresector-relative, 1–10 | 7/10 | 4/10 |
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 Q1 2026, net income $879M. 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 read the correlation.