← All companies
AMERICAN ELECTRIC POWER CO INC
AEP - CIK 0000004904
Market cap$69.93 B
Rank#242
SEC filings1,005
Market capitalization of AMERICAN ELECTRIC POWER CO INC
As of 2026-06-11, AMERICAN ELECTRIC POWER CO INC (AEP) has a market capitalization of $69.93 B, making it the #242 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-06-11 | $69.93 B |
| 2026-06-10 | $70.12 B |
| 2026-05-29 | $69.15 B |
| 2026-05-28 | $70.50 B |
| 2026-05-26 | $71.50 B |
| 2026-05-25 | $71.60 B |
| 2026-05-24 | $71.60 B |
| 2026-05-22 | $71.60 B |
Readings accumulate daily as market data refreshes, combining SEC-reported share counts with live prices.
Market Cap of similar companies
Frequently asked questions
What is AMERICAN ELECTRIC POWER CO INC's market cap?
As of 2026-06-11, AMERICAN ELECTRIC POWER CO INC (AEP) has a market capitalization of $69.93 B, making it the #242 most valuable US-listed company.
Where does AMERICAN ELECTRIC POWER CO INC rank by market cap?
AMERICAN ELECTRIC POWER CO INC is the #242 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.