AMT - CIK 0001053507
As of 2026-06-10, AMERICAN TOWER CORP /MA/ (AMT) has a market capitalization of $89.86 B, making it the #170 most valuable US-listed company.
| Date | Market cap |
|---|---|
| 2026-06-10 | $89.86 B |
| 2026-05-29 | $86.88 B |
| 2026-05-28 | $86.18 B |
| 2026-05-26 | $85.91 B |
| 2026-05-25 | $85.65 B |
| 2026-05-24 | $85.65 B |
| 2026-05-22 | $85.65 B |
Readings accumulate daily as market data refreshes, combining SEC-reported share counts with live prices.
As of 2026-06-10, AMERICAN TOWER CORP /MA/ (AMT) has a market capitalization of $89.86 B, making it the #170 most valuable US-listed company.
AMERICAN TOWER CORP /MA/ is the #170 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.