Market Cap

The Southern Company Market Capitalization:

$95.99 Billion

USD as of Jan. 1, 2026

business The Southern Company Company Profile

The Southern Company Main Stock Listing

NYSE: SO

Market Capitalization History of The Southern Company

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
Duke Energy Corporation $91.33 B
American Electric Power Company, Inc. $61.99 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 The Southern Company market cap

Date Market Cap YoY Change
Jan. 1, 2026 $95.99 B 6.51%
Jan. 1, 2025 $90.13 B 15.24%
Jan. 1, 2024 $78.21 B 0.60%
Jan. 1, 2023 $77.74 B 4.63%
Jan. 1, 2022 $74.30 B 17.94%
Jan. 1, 2021 $63.00 B -16.31%
Jan. 1, 2020 $75.27 B 44.86%
Jan. 1, 2019 $51.96 B 7.74%
Jan. 1, 2018 $48.23 B -8.74%
Jan. 1, 2017 $52.85 B 1.04%
Jan. 1, 2016 $52.31 B -3.55%
Jan. 1, 2015 $54.23 B 22.99%
Jan. 1, 2014 $44.09 B -6.76%
Jan. 1, 2013 $47.29 B -2.92%
Jan. 1, 2012 $48.71 B 21.11%
Jan. 1, 2011 $40.22 B 17.56%
Jan. 1, 2010 $34.21 B -4.33%
Jan. 1, 2009 $35.76 B -8.03%
Jan. 1, 2008 $38.89 B -0.44%
Jan. 1, 2007 $39.06 B 4.97%
Jan. 1, 2006 $37.21 B 3.05%
Jan. 1, 2005 $36.11 B 13.32%
Jan. 1, 2004 $31.86 B 5.79%
Jan. 1, 2003 $30.12 B 14.28%
Jan. 1, 2002 $26.36 B 38.28%
Jan. 1, 2001 $19.06 B

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

Company Description

Southern Company is an electric utility company. Through its subsidiaries, it serves 9 million natural gas and electric utility customers in Alabama, Georgia, Illinois, Mississippi, Tennessee, and Virginia. With origins dating back to 1924, it now operates multiple coal-fired, nuclear, and natural gas power plants as well as some renewable energy sources.

business The Southern Company Company Profile

The Southern Company Categories

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

Stocks & Indices

The Southern Company has the following listings and related stock indices.


Stock: NYSE: SO

Stock: FSX: SOT

Stock: NYSE: SOJD

Stock: XETR: SOT

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.