Market Cap for American Electric Power Company (AEP)
According to American Electric Power Company's latest reported financial statements, the company's latest reported market cap is $59.98B USD. Market capitalization is the total dollar value of all outstanding shares — shares outstanding × stock price — and the standard measure of a company's equity value. On this page, historical market cap snaps filing-period share counts to closing prices on or before each statement date (not intraday tick data).
Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .
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Latest period
$59.98B
YoY change
+16.6%
5Y CAGR
+9.4%
Peak year (2026)
$69.94B
Latest annual
$69.94B
Market Cap history chart for American Electric Power Company (AEP) from 1985 to 2026
Market Cap history table for American Electric Power Company (AEP) from 1985 to 2026
| Fiscal year | Period ended | Reported | Market Cap | YoY |
|---|---|---|---|---|
| 2026 | $69.94B | +16.6% | ||
| 2025 | $59.98B | +22.4% | ||
| 2024 | $49.01B | +16.0% | ||
| 2023 | $42.25B | -13.3% | ||
| 2022 | $48.76B | +9.2% | ||
| 2021 | $44.64B | +7.8% | ||
| 2020 | $41.40B | -11.6% | ||
| 2019 | $46.81B | +26.8% | ||
| 2018 | $36.90B | +1.8% | ||
| 2017 | $36.24B | +17.1% | ||
| 2016 | $30.96B | +8.3% | ||
| 2015 | $28.59B | -3.7% | ||
| 2014 | $29.69B | +30.4% | ||
| 2013 | $22.76B | +10.0% | ||
| 2012 | $20.70B | +3.9% | ||
| 2011 | $19.93B | +15.5% | ||
| 2010 | $17.26B | +8.1% | ||
| 2009 | $15.97B | +18.9% | ||
| 2008 | $13.43B | -27.9% | ||
| 2007 | $18.63B | +10.4% | ||
| 2006 | $16.88B | +16.3% | ||
| 2005 | $14.52B | +6.8% | ||
| 2004 | $13.60B | +17.5% | ||
| 2003 | $11.57B | +27.5% | ||
| 2002 | $9.07B | -35.3% | ||
| 2001 | $14.02B | -6.4% | ||
| 2000 | $14.97B | +45.2% | ||
| 1999 | $10.31B | +14.7% | ||
| 1998 | $8.99B | -8.0% | ||
| 1997 | $9.77B | +27.0% | ||
| 1996 | $7.69B | +2.2% | ||
| 1995 | $7.53B | +24.1% | ||
| 1994 | $6.07B | -11.3% | ||
| 1993 | $6.84B | +12.0% | ||
| 1992 | $6.11B | -3.3% | ||
| 1991 | $6.32B | +20.4% | ||
| 1990 | $5.24B | -17.9% | ||
| 1989 | $6.39B | +21.1% | ||
| 1988 | $5.27B | +3.9% | ||
| 1987 | $5.07B | -4.7% | ||
| 1986 | $5.32B | +18.0% | ||
| 1985 | $4.51B | — |
Market Cap values are taken from American Electric Power Company's reported income statements (10-Q quarterly and 10-K annual filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the date the filing was reported; YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.
Analysis
American Electric Power Company (AEP) most recent annual market cap stands at $69.94B (2026) – grew 16.6% year-over-year.
American Electric Power Company market cap compound annual growth for the 2021–2026 (5 years) window is +9.4%, sustaining 3 straight years of year-over-year growth.
The dataset's maximum market cap sits at $69.94B (2026); the minimum reading of $4.51B dates to 1985.
Within Utilities, American Electric Power Company (AEP) ranks 6th among 8 peers we track. The peer median for market cap is $97.46B.
American Electric Power Company Market Cap by Year
American Electric Power Company Market Cap 2026: $69.94B
American Electric Power Company market cap in 2026 was $69.94B, grew 16.6% from 2025. This figure represents the highest annual value in the available history.
American Electric Power Company Market Cap 2025: $59.98B
American Electric Power Company market cap in 2025 was $59.98B, grew 22.4% from 2024.
American Electric Power Company Market Cap 2024: $49.01B
American Electric Power Company market cap in 2024 was $49.01B, grew 16.0% from 2023.
American Electric Power Company Market Cap 2023: $42.25B
American Electric Power Company market cap in 2023 was $42.25B, declined 13.3% below 2022.
American Electric Power Company Market Cap 2022: $48.76B
American Electric Power Company market cap in 2022 was $48.76B.
See more financial history for American Electric Power Company (AEP).
Sector peers — Market Cap
Companies in the same sector as American Electric Power Company, ranked by their latest market cap.
| Company | Market Cap | Sector |
|---|---|---|
| GE Vernova Inc. (GEV) | $292.62B | Utilities |
| NextEra Energy, Inc. (NEE) | $201.26B | Utilities |
| The Southern Company (SO) | $106.43B | Utilities |
| Duke Energy Corporation (DUK) | $99.46B | Utilities |
| Constellation Energy Corporation (CEG) | $95.47B | Utilities |
| Sempra (SRE) | $60.69B | Utilities |
| Dominion Energy, Inc. (D) | $55.28B | Utilities |
| Vistra Corp. (VST) | $54.55B | Utilities |
Frequently asked questions
What is American Electric Power Company's market cap?
- Latest reported market cap for American Electric Power Company (AEP) is $59.98B (period ending December 31, 2025).
How has American Electric Power Company market cap changed year-over-year?
- American Electric Power Company (AEP) market cap changed +16.6% year-over-year on the latest annual filing.
What is the long-term growth rate of American Electric Power Company market cap?
- American Electric Power Company (AEP) market cap compound annual growth rate is +9.4% over the most recent 5 years available.
When did American Electric Power Company market cap hit its highest annual value?
- American Electric Power Company market cap reached its highest annual value of $69.94B in 2026.
What was American Electric Power Company market cap in 2025?
- American Electric Power Company (AEP) market cap in 2025 was $59.98B.
What was American Electric Power Company market cap in 2026?
- American Electric Power Company (AEP) market cap in 2026 was $69.94B.
Metrics overview
Pick a metric for charts, filings, and peers — each row shows the latest TTM or annual value with year-over-year change.
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AEP Overview
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