American Electric Power Company, Inc. (AEP)

AEP Market Cap

AEP has a market cap or net worth of $69.92 billion as of May 19, 2026. Its market cap has increased by 21.83% in one year.

• Market Cap: 69.92B
• Enterprise Value: 121.14B
• 1-Year Change: 21.83%
• Ranking: #247
• Category: Large-Cap
• Stock Price: $128.50

Market Cap Chart

Since December 1, 1998, AEP's market cap has increased from $8.98B to $69.92B, an increase of 678.43%. That is a compound annual growth rate of 7.75%.

Market Cap History

Date	Market Cap	% Change
May 18, 2026	69.47B	12.56%
Dec 31, 2025	61.72B	25.66%
Dec 31, 2024	49.12B	15.00%
Dec 29, 2023	42.71B	-12.46%
Dec 30, 2022	48.79B	8.89%
Dec 31, 2021	44.81B	8.41%
Dec 31, 2020	41.33B	-11.46%
Dec 31, 2019	46.68B	26.67%
Dec 31, 2018	36.86B	1.84%
Dec 29, 2017	36.19B	16.89%
Dec 30, 2016	30.96B	8.25%
Dec 31, 2015	28.60B	-3.73%
Dec 31, 2014	29.71B	30.43%
Dec 31, 2013	22.78B	9.97%
Dec 31, 2012	20.71B	3.82%
Dec 30, 2011	19.95B	15.44%
Dec 31, 2010	17.28B	3.99%
Dec 31, 2009	16.62B	23.73%
Dec 31, 2008	13.43B	-27.89%
Dec 31, 2007	18.62B	10.57%
Dec 29, 2006	16.84B	15.35%
Dec 30, 2005	14.60B	7.46%
Dec 31, 2004	13.59B	12.75%
Dec 31, 2003	12.05B	30.14%
Dec 31, 2002	9.26B	-33.98%

View and export this data all the way back to 1998. Sign Up Today.

Data Source: Nasdaq Data Link Last updated: May 18, 2026

Market cap data is provided by Nasdaq Data Link. The current market cap updates continuously throughout the trading day, while the historical market cap is updated daily after market close.

Update frequency:

Daily

Last checked:

May 19, 2026

Data Sources Report a data error

Related Stocks

Company	Market Cap
The Southern Company	105.64B
The Southern Company	105.64B
Duke Energy	95.77B
National Grid	82.07B
Dominion Energy	59.42B
Entergy	50.18B
Xcel Energy	48.76B
Exelon	44.99B