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AMERICAN TOWER CORP /MA/
AMT - Company ID 0001053507
Market cap$76.87 B
Rank#213
Filings1,012
Market capitalization of AMERICAN TOWER CORP /MA/
As of 2026-07-09, AMERICAN TOWER CORP /MA/ (AMT) has a market capitalization of $76.87 B, making it the #213 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-07-09 | $76.87 B |
| 2026-07-08 | $76.89 B |
| 2026-07-07 | $76.99 B |
| 2026-07-06 | $75.04 B |
| 2026-07-05 | $77.35 B |
| 2026-07-04 | $77.35 B |
| 2026-07-03 | $77.35 B |
| 2026-07-02 | $77.43 B |
| 2026-07-01 | $77.38 B |
| 2026-06-30 | $76.70 B |
| 2026-06-29 | $78.57 B |
| 2026-06-28 | $81.81 B |
Market Cap of similar companies
Frequently asked questions
What is AMERICAN TOWER CORP /MA/'s market cap?
As of 2026-07-09, AMERICAN TOWER CORP /MA/ (AMT) has a market capitalization of $76.87 B, making it the #213 most valuable US-listed company.
Where does AMERICAN TOWER CORP /MA/ rank by market cap?
AMERICAN TOWER CORP /MA/ is the #213 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.