Southern Company (SO) - Market capitalization

Market cap: C$138.14 Billion

As of September 2026 Southern Company has a market cap of C$138.14 Billion. This makes Southern Company the world's 242th 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	C$138.14 B	5.09%
2025	C$131.44 B	0.56%
2024	C$130.71 B	28.87%
2023	C$101.43 B	-3.85%
2022	C$105.49 B	13.89%
2021	C$92.62 B	11.96%
2020	C$82.73 B	-5.56%
2019	C$87.60 B	41.64%
2018	C$61.84 B	1.93%
2017	C$60.68 B	-6.33%
2016	C$64.78 B	9.49%
2015	C$59.16 B	14.3%
2014	C$51.76 B	33.31%
2013	C$38.82 B	5.08%
2012	C$36.95 B	-8.95%
2011	C$40.58 B	25.91%
2010	C$32.23 B	12.19%
2009	C$28.73 B	-17.87%
2008	C$34.98 B	18.51%
2007	C$29.51 B	-7.85%
2006	C$32.03 B	7.44%
2005	C$29.81 B	-0.17%
2004	C$29.86 B	3.58%
2003	C$28.83 B	-10.3%
2002	C$32.14 B	13.88%
2001	C$28.22 B	-16.91%
2000	C$33.97 B	50.51%
1999	C$22.57 B	-27.38%
1998	C$31.08 B	21.32%
1997	C$25.61 B	22.12%
1996	C$20.97 B

End of Day market cap according to different sources

On Sep 17th, 2026 the market cap of Southern Company was reported to be:

C$139.68 Billion

by Nasdaq

C$139.76 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
American Electric Power AEP	C$91.71 B	-33.61%	🇺🇸 USA
Dominion Energy D	C$78.38 B	-43.26%	🇺🇸 USA
FirstEnergy FE	C$36.74 B	-73.40%	🇺🇸 USA
NRG Energy NRG	C$30.84 B	-77.67%	🇺🇸 USA
Nextera Energy NEE	C$235.42 B	70.42%	🇺🇸 USA
Duke Energy DUK	C$128.13 B	-7.24%	🇺🇸 USA
Entergy ETR	C$68.34 B	-50.52%	🇺🇸 USA
PPL PPL	C$35.22 B	-74.50%	🇺🇸 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: C$138.14 Billion