Market Cap

American Electric Power Company, Inc. Market Capitalization:

$61.99 Billion

USD as of Jan. 1, 2026

business American Electric Power Company, Inc. Company Profile

American Electric Power Company, Inc. Main Stock Listing

NASDAQ: AEP

Market Capitalization History of American Electric Power Company, Inc.

Market capitalizations are calculated from the opening stock price at the beginning of each month.

Top Competitors by Market Capitalization

Industry: Utilities—Regulated Electric
Company Market Cap (USD)
NextEra Energy $168.55 B
The Southern Company $95.99 B
Duke Energy Corporation $91.33 B
Xcel Energy Inc. $44.18 B
Endesa, SA $37.95 B
Sector: Utilities
Company Market Cap (USD)
NextEra Energy $168.55 B
Iberdrola, SA $146.18 B
Siemens Energy $123.41 B
Constellation Energy $114.42 B
Enel SpA $106.27 B

Yearly evolution of American Electric Power Company, Inc. market cap

Date Market Cap YoY Change
Jan. 1, 2026 $61.99 B 19.42%
Jan. 1, 2025 $51.91 B 18.37%
Jan. 1, 2024 $43.85 B -10.00%
Jan. 1, 2023 $48.72 B 6.32%
Jan. 1, 2022 $45.83 B 11.73%
Jan. 1, 2021 $41.02 B -22.37%
Jan. 1, 2020 $52.84 B 31.72%
Jan. 1, 2019 $40.11 B 15.03%
Jan. 1, 2018 $34.87 B 7.37%
Jan. 1, 2017 $32.48 B 5.07%
Jan. 1, 2016 $30.91 B -2.93%
Jan. 1, 2015 $31.84 B 28.68%
Jan. 1, 2014 $24.75 B 7.77%
Jan. 1, 2013 $22.96 B 14.48%
Jan. 1, 2012 $20.06 B 10.87%
Jan. 1, 2011 $18.09 B 2.97%
Jan. 1, 2010 $17.57 B 10.53%
Jan. 1, 2009 $15.89 B -26.63%
Jan. 1, 2008 $21.66 B -1.84%
Jan. 1, 2007 $22.07 B 16.64%
Jan. 1, 2006 $18.92 B 5.87%
Jan. 1, 2005 $17.87 B 7.96%
Jan. 1, 2004 $16.55 B 38.23%
Jan. 1, 2003 $11.97 B -43.41%
Jan. 1, 2002 $21.16 B -3.49%
Jan. 1, 2001 $21.93 B

Market capitalization is calculated from the opening stock price at the beginning of each year.

Company Description

American Electric Power, also known by the acronym AEP, is an electric utility company. Tracing its origins to 1906, AEP now operates in power generation primarily with coal-fueled power plants, but also with natural gas and nuclear plants, and wind, hydro, pumped storage, and other sources. It is also involved in power transmission and delivery through local subsidiaries in Ohio, Texas, Tennessee, West Virginia, Indiana, Michigan, Kentucky, Oklahoma, Arkansas, and Louisiana.

business American Electric Power Company, Inc. Company Profile

American Electric Power Company, Inc. Categories

United States languages Utilities languages Utilities—Regulated Electric
United States Utilities United States Utilities—Regulated Electric

Stocks & Indices

American Electric Power Company, Inc. has the following listings and related stock indices.


Stock: NASDAQ: AEP

Stock: FSX: AEP

What is a company's market capitalization?

The market capitalization of a company, more simply referred to as "market cap", is the total market value of a publicly traded company's outstanding shares. It is often considered as a key indicator of what a company is worth.