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AMERICAN TOWER CORP /MA/
AMT - Company ID 0001053507
Market cap$81.93 B
Rank#200
Filings1,012
Market capitalization of AMERICAN TOWER CORP /MA/
As of 2026-09-08, AMERICAN TOWER CORP /MA/ (AMT) has a market capitalization of $81.93 B, making it the #200 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-09-08 | $81.93 B |
| 2026-09-07 | $81.93 B |
| 2026-09-06 | $81.93 B |
| 2026-09-05 | $81.93 B |
| 2026-09-04 | $81.93 B |
| 2026-09-03 | $82.81 B |
| 2026-09-02 | $80.56 B |
| 2026-09-01 | $82.01 B |
| 2026-08-31 | $81.86 B |
| 2026-08-30 | $82.10 B |
| 2026-08-29 | $82.10 B |
| 2026-08-28 | $82.10 B |
Market Cap of similar companies
Frequently asked questions
What is AMERICAN TOWER CORP /MA/'s market cap?
As of 2026-09-08, AMERICAN TOWER CORP /MA/ (AMT) has a market capitalization of $81.93 B, making it the #200 most valuable US-listed company.
Where does AMERICAN TOWER CORP /MA/ rank by market cap?
AMERICAN TOWER CORP /MA/ is the #200 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.