American Tower Corporation (AMT) vs Iron Mountain Incorporated (IRM)
AMT leads on 10 of 13 compared metrics.
A side-by-side comparison of American Tower Corporation and Iron Mountain Incorporated across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of July 20, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).
AMT
American Tower Corporation
$167.06Real EstateDelayed quote: Jul 20, 2026, 4:00 PM EDT
IRM
Iron Mountain Incorporated
$124.23Real EstateDelayed quote: Jul 20, 2026, 4:00 PM EDT
Total return — AMT vs IRM
growth of $100 · dividends reinvested · last 28yAMT +1240.5%IRM +3817.4%IRM compounded faster
AMT IRM
AMT vs IRM: by the numbers
- •AMT is the larger company ($77.83B vs $36.96B market cap).
- •AMT trades at the lower earnings multiple (26.99 vs 136.07 P/E).
- •AMT converts more revenue to profit (26.60% vs 3.76% net margin).
- •IRM grew revenue faster over the past five years (11.73% vs 5.68% CAGR).
- •AMT pays the higher dividend yield (4.18% vs 2.73%).
Which is better, AMT or IRM?
Metric tally: AMT 10 · IRM 3It depends on what you're optimizing for:
ValueAMT(lower P/E)
GrowthIRM(faster 5Y revenue CAGR)
IncomeAMT(higher dividend yield)
QualityAMT(higher ROIC)
Metrics side by side
Valuation
| Metric | AMT | IRM |
|---|---|---|
| P/E ratio | 26.99● | 136.07 |
| Forward P/E | 25.37● | 52.17 |
| P/S ratio | 7.21 | 5.11● |
| P/B ratio | 21.35 | — |
| PEG ratio | 2.76 | — |
| EV / EBITDA | 17.70● | 24.22 |
Profitability
| Metric | AMT | IRM |
|---|---|---|
| Gross margin | 73.37%● | 25.69% |
| Operating margin | 44.24%● | 18.01% |
| Net margin | 26.60%● | 3.76% |
| ROE | 78.79%● | -14.74% |
| ROIC | 8.85%● | 5.72% |
Dividends
| Metric | AMT | IRM |
|---|---|---|
| Dividend yield | 4.18%● | 2.73% |
| Payout ratio | 129.26% | 689.18% |
Growth (annualized)
| Metric | AMT | IRM |
|---|---|---|
| Revenue CAGR (5Y) | 5.68% | 11.73%● |
| EPS CAGR (5Y) | 7.23%● | -16.26% |
| Total return CAGR (5Y) | -7.14% | 28.03%● |
Frequently asked
- Which is better, AMT or IRM?
- It depends on your goal. value: AMT (lower P/E); growth: IRM (faster 5Y revenue CAGR); income: AMT (higher dividend yield); quality: AMT (higher ROIC). Across all compared metrics, AMT leads 10 to 3.
- Is AMT or IRM cheaper?
- On trailing earnings, AMT is cheaper: AMT trades at a 26.99 P/E and IRM at 136.07.
- Which has grown faster, AMT or IRM?
- Over the past five years, IRM grew revenue faster — AMT at a 5.68% CAGR versus IRM at 11.73%.
- Does AMT or IRM pay a bigger dividend?
- AMT yields 4.18% and IRM yields 2.73% based on trailing dividends and the latest price.
- Is AMT or IRM more profitable?
- AMT runs the higher net margin — AMT at 26.60% versus IRM at 3.76%.
- Which has been the better investment, AMT or IRM?
- Over the past 10-year, IRM delivered the higher annualized total return — AMT at 6.24% versus IRM at 18.17%. Past performance doesn't predict future results.
Go deeper
Dig into the metrics
American Tower P/E ratioIron Mountain P/E ratioAmerican Tower dividend yieldIron Mountain dividend yieldAmerican Tower ROEIron Mountain ROEAmerican Tower operating marginIron Mountain operating marginAmerican Tower revenue growthIron Mountain revenue growthAmerican Tower free cash flowIron Mountain free cash flow
American Tower & Iron Mountain appear in these rankings
Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified July 20, 2026.