American Electric Power Company, Inc. (AEP)

NASDAQ: AEP · Real-Time Price · USD

135.60

+0.53 (0.39%)

At close: Apr 28, 2026, 4:00 PM EDT

135.59

-0.01 (-0.01%)

After-hours: Apr 28, 2026, 4:02 PM EDT

AEP Market Cap

AEP has a market cap or net worth of $73.57 billion as of April 28, 2026. Its market cap has increased by 33.76% in one year.

Market Cap

73.57B

Enterprise Value

122.78B

1-Year Change

33.76%

Ranking

#227

Market Cap Chart

Since December 1, 1998, AEP's market cap has increased from $8.98B to $73.57B, an increase of 719.04%. That is a compound annual growth rate of 7.97%.

Market Cap History

Date	Market Cap	% Change
Apr 27, 2026	73.05B	18.36%
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.

Market Capitalization

Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.

Formula: Market Cap = Stock Price * Shares Outstanding

Full Definition

Related Stocks

Company	Market Cap
The Southern Company	105.71B
The Southern Company	105.71B
Duke Energy	98.90B
National Grid	87.17B
Dominion Energy	54.94B
Entergy	51.93B
Xcel Energy	49.56B
Exelon	47.67B

Market Cap Rankings