American Tower vs Iron Mountain
Both are primarily Data Center Operators (Colo) companies. American Tower is larger by market cap ($75.6B vs $33.8B). American Tower reports higher tracked revenue ($10.6B vs $6.9B).
Shared segment: AI & Data Center.
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Side-by-side
| American Tower | Iron Mountain | |
|---|---|---|
| Market cap | $75.6B | $33.8B |
| Revenue | $10.6B (FY2025) | $6.9B (FY2025) |
| Primary segment | Data Center Operators (Colo) | Data Center Operators (Colo) |
| Market position | major | major |
| Country | United States | United States |
| Tracked suppliers | 4 | 4 |
| Tracked customers | 5 | 5 |
| Chokepoint / criticality | 8/100 | 8/100 |
Market caps/revenue from the wafergraph dataset · data as of 2026-10-04. Criticality is a graph-derived chokepoint score (0–100). Coverage is partial; "Unpriced" means no reliable market cap.
How American Tower and Iron Mountain compare
- Size: American Tower is the larger company by market cap.
- Revenue: American Tower reports higher tracked revenue.
- Supply-chain criticality: Both companies have the same chokepoint score (8/100).
- Footprint: American Tower (United States) vs Iron Mountain (United States).
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Cite as: wafergraph, “American Tower vs Iron Mountain”, https://wafergraph.com/compare/american_tower-vs-iron_mountain (data as of 2026-10-04).
Frequently asked questions3
- Is American Tower bigger than Iron Mountain?
- American Tower is larger by market cap ($75.6B vs $33.8B).
- What's the difference between American Tower and Iron Mountain?
- American Tower is a major in Data Center Operators (Colo) based in United States; Iron Mountain is a major in Data Center Operators (Colo) based in United States. Both operate in the AI & Data Center segment.
- Who are American Tower's and Iron Mountain's suppliers?
- wafergraph tracks 4 suppliers for American Tower and 4 for Iron Mountain.