Southern Company Market Cap ($97.89 Billion)

$97.89 Billion USD · Rank #263

Market Cap & Net Worth: Southern Company (SO)

Southern Company market cap. Southern Company (NYSE:SO) has a market capitalization of $97.89 Billion ($97.89 Billion) as of October 31, 2026. Listed on the NYSE stock exchange, this USA-based company holds position #263 globally and #137 in its home market, demonstrating a -0.12% decrease in market value over the past year.

Market capitalization, also known as net worth in stock markets, is calculated by multiplying Southern Company's stock price $93.71 by its total outstanding shares 1101104843 (1.10 Billion).

Southern Company Market Cap History (2015–2026)

Southern Company market cap history from 2015 to 2026. Data shows growth from $35.00 Billion to $103.18 Billion (10.59% CAGR). Check Southern Company (SO) stock price for real-time trading data and today's change.

Index Memberships

Southern Company is a constituent of 5 market indices:

Index	Total Market Cap	Weight (%)	Rank by Market Cap
Dow Jones Composite Average DJA	$17.84 Trillion	0.55%	#28 of 65
DJC: Dow Jones-UBS Commodity Index DJC	$24.76 Trillion	0.91%	#30 of 65
Dow Jones Utility DJU	$875.88 Billion	6.87%	#2 of 15
S&P 500 Index GSPC	$61.47 Trillion	0.22%	#109 of 503
S&P 100 OEX	$44.16 Trillion	0.31%	#81 of 101

Weight: Southern Company's market cap as a percentage of total index value. Rank: Position among all constituents by market cap.

Southern Company Market Cap to Earnings & Revenue Ratios Timeline

This chart shows how Southern Company's valuation ratios have evolved. The Price to Sales (P/S) ratio compares market cap to revenue, while the Price to Earnings (P/E) ratio compares market cap to net income. Lower values may indicate a more undervalued company relative to its financial performance. Also see SO cash flow conversion for how efficiently the company converts equity into cash flow.

Latest Price to Sales (P/S) Ratio

3.39x

Southern Company's market cap is 3.39 times its annual revenue

Industry average: 0.19x Higher than industry average

Latest Price to Earnings (P/E) Ratio

20.60x

Southern Company's market cap is 20.60 times its annual earnings

Industry average: 1.19x Higher than industry average

What These Ratios Tell Investors:

Price to Sales (P/S) Ratio: Shows how much investors are paying for each dollar of the company's sales. Lower P/S ratios may indicate undervaluation.
Price to Earnings (P/E) Ratio: Shows how much investors are paying for each dollar of the company's earnings. This is one of the most common valuation metrics.
Trends in these ratios over time can indicate changing investor sentiment about the company's future growth prospects.
Industry comparison provides context for whether the company is valued higher or lower than peers.

Year	Market Cap (USD)	Revenue (USD)	Net Income (USD)	P/S Ratio	P/E Ratio
2015	$35.00 Billion	$17.49 Billion	$2.42 Billion	2.00x	14.46x
2016	$38.47 Billion	$19.90 Billion	$2.49 Billion	1.93x	15.43x
2017	$39.40 Billion	$23.03 Billion	$880.00 Million	1.71x	44.77x
2018	$37.92 Billion	$23.50 Billion	$2.24 Billion	1.61x	16.91x
2019	$57.50 Billion	$21.42 Billion	$4.75 Billion	2.68x	12.10x
2020	$57.87 Billion	$20.38 Billion	$3.13 Billion	2.84x	18.46x
2021	$67.31 Billion	$23.11 Billion	$2.41 Billion	2.91x	27.95x
2022	$72.86 Billion	$29.28 Billion	$3.54 Billion	2.49x	20.61x
2023	$74.47 Billion	$25.25 Billion	$3.98 Billion	2.95x	18.73x
2024	$90.64 Billion	$26.72 Billion	$4.40 Billion	3.39x	20.60x

Competitor Companies of SO by Market Capitalization

Companies near Southern Company in the global market cap rankings as of October 31, 2026. See SO equity to assets ratio to understand what proportion of total assets are financed by equity.

Key companies related to Southern Company by market ranking:

Nextera Energy Inc (NYSE:NEE): Ranked #126 globally with a market cap of $174.34 Billion USD.
Duke Energy Corporation (NYSE:DUK): Ranked #265 globally with a market cap of $97.35 Billion USD.
National Grid PLC ADR (NYSE:NGG): Ranked #312 globally with a market cap of $86.46 Billion USD.
National Grid plc (F:NNGD): Ranked #399 globally with a market cap of $71.15 Billion USD ( €60.86 Billion EUR).

Market capitalization comparison (in billions USD)

Rank	Company	Symbol	Market Cap	Price
#126	Nextera Energy Inc	NYSE:NEE	$174.34 Billion	$83.71
#265	Duke Energy Corporation	NYSE:DUK	$97.35 Billion	$127.39
#312	National Grid PLC ADR	NYSE:NGG	$86.46 Billion	$86.96
#399	National Grid plc	F:NNGD	$71.15 Billion	€72.50

Market Capitalization of Southern Company (2015–2026)

Market capitalization of Southern Company from 2015 to today. Between 2015 and today, Southern Company's market cap moved from $35.00 Billion to $ 103.18 Billion, with a yearly change of 10.59%.

Year	Market Cap	Change (%)
2026	$103.18 Billion	+7.47%
2025	$96.02 Billion	+5.93%
2024	$90.64 Billion	+21.72%
2023	$74.47 Billion	+2.21%
2022	$72.86 Billion	+8.24%
2021	$67.31 Billion	+16.32%
2020	$57.87 Billion	+0.63%
2019	$57.50 Billion	+51.65%
2018	$37.92 Billion	-3.75%
2017	$39.40 Billion	+2.42%
2016	$38.47 Billion	+9.92%
2015	$35.00 Billion	--

End of Day Market Cap According to Different Sources

On Oct 31st, 2026 the market cap of Southern Company was reported to be:

Source	Market Cap
Yahoo Finance	$97.89 Billion USD
MoneyControl	$97.89 Billion USD
MarketWatch	$97.89 Billion USD
marketcap.company	$97.89 Billion USD
Reuters	$97.89 Billion USD

Market cap values may vary slightly between sources due to differences in calculation methods, timing, and data refresh rates.

About Southern Company

NYSE:SO USA Utilities - Regulated Electric

Market Cap

$103.18 Billion

Market Cap Rank

#263 Global

#137 in USA

Share Price

$93.71

Change (1 day)

+0.77%

52-Week Range

$82.35 - $99.11

All Time High

$99.72