Southern Company (SO) - Market capitalization

Market cap: £78.09 Billion

As of February 2026 Southern Company has a market cap of £78.09 Billion. This makes Southern Company the world's 213th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Southern Company from 1996 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	£78.09 B	9.57%
2025	£71.27 B	-1.82%
2024	£72.59 B	20.93%
2023	£60.02 B	-6.59%
2022	£64.26 B	19.34%
2021	£53.84 B	13.11%
2020	£47.60 B	-6.94%
2019	£51.15 B	43.01%
2018	£35.76 B	0.16%
2017	£35.71 B	-8.59%
2016	£39.06 B	35.73%
2015	£28.78 B	0.46%
2014	£28.65 B	29.56%
2013	£22.11 B	-3.81%
2012	£22.99 B	-10.44%
2011	£25.66 B	22.89%
2010	£20.88 B	23.79%
2009	£16.87 B	-14.04%
2008	£19.63 B	31.8%
2007	£14.89 B	6.04%
2006	£14.04 B	-5.41%
2005	£14.84 B	14.65%
2004	£12.95 B	4.23%
2003	£12.42 B	-2.11%
2002	£12.69 B	3.86%
2001	£12.22 B	-19.56%
2000	£15.19 B	56.86%
1999	£9.68 B	-20.33%
1998	£12.15 B	11.38%
1997	£10.91 B	22.03%
1996	£8.94 B

End of Day market cap according to different sources

On Feb 24th, 2026 the market cap of Southern Company was reported to be:

£79.39 Billion

by Nasdaq

£78.09 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
American Electric Power AEP	£53.00 B	-32.13%	🇺🇸 USA
Dominion Energy D	£40.28 B	-48.41%	🇺🇸 USA
FirstEnergy FE	£21.65 B	-72.27%	🇺🇸 USA
NRG Energy NRG	£29.40 B	-62.34%	🇺🇸 USA
Nextera Energy NEE	£147.56 B	88.96%	🇺🇸 USA
Duke Energy DUK	£73.94 B	-5.31%	🇺🇸 USA
Entergy ETR	£35.22 B	-54.89%	🇺🇸 USA
PPL PPL	£20.87 B	-73.27%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of Southern Company (SO)

Market cap: £78.09 Billion