Ticker League

Current

$106.03B

As of Jun 12, 2026

5-Year Average

$84.77B

All-Time High

$110.19B

Oct 15, 2025

All-Time Low

$15.46B

Dec 11, 2001

Market cap daily chart for Southern Company (SO)

Jun 16, 2021 – Jun 12, 2026 · 1,254 trading days

Market Cap growth chart for Southern Company (SO) from 1985 to 2026

Latest: +9.6%

Market Cap history table for Southern Company (SO) from 1985 to 2026

  • 2026$106.03B+9.6%
  • 2025$96.70B+6.5%
  • 2024$90.80B+17.9%
  • 2023$76.99B-0.3%
  • 2022$77.19B+6.1%
  • 2021$72.76B+12.0%
  • 2020$64.99B-3.1%
  • 2019$67.08B+47.7%
  • 2018$45.40B-6.3%
  • 2017$48.46B-0.5%
  • 2016$48.71B+14.2%
  • 2015$42.65B-4.4%
  • 2014$44.61B+22.3%
  • 2013$36.48B-1.8%
  • 2012$37.16B-6.3%
  • 2011$39.67B+24.5%
  • 2010$31.86B+20.3%
  • 2009$26.49B-7.6%
  • 2008$28.68B-2.8%
  • 2007$29.49B+7.0%
  • 2006$27.57B+6.6%
  • 2005$25.86B+3.8%
  • 2004$24.91B+12.5%
  • 2003$22.14B+9.2%
  • 2002$20.27B+15.2%
  • 2001$17.59B+32.8%
  • 2000$13.24B+34.9%
  • 1999$9.82B-20.4%
  • 1998$12.34B+14.3%
  • 1997$10.80B+16.4%
  • 1996$9.27B-7.0%
  • 1995$9.98B+25.8%
  • 1994$7.93B-7.6%
  • 1993$8.58B+30.2%
  • 1992$6.59B+13.9%
  • 1991$5.78B+33.9%
  • 1990$4.32B-9.7%
  • 1989$4.79B+13.0%
  • 1988$4.24B+7.7%
  • 1987$3.93B+6.3%
  • 1986$3.70B+23.9%
  • 1985$2.98B

Market Cap values are taken from Southern Company's reported income statements (share counts) and end-of-day prices (quarterly 10-Q and annual 10-K filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the filing date. YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.

About Market Cap at Southern Company (SO)

According to Southern Company's latest reported financial statements, the company's latest reported market cap is $108.87B. Market capitalization is the total dollar value of all outstanding shares — shares outstanding × stock price — and the standard measure of a company's equity value. On this page, historical market cap snaps filing-period share counts to closing prices on or before each statement date (not intraday tick data).

Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .

Southern Company (SO) most recent annual market cap stands at $106.03B (2026) – grew 9.6% year-over-year.

Southern Company market cap compound annual growth for the 2021–2026 (5 years) window is +7.8%, sustaining 3 straight years of year-over-year growth.

The record annual market cap stands at $106.03B, reached in 2026; the historical low of $2.98B was recorded in 1985.

Southern Company Market Cap by Year

Southern Company Market Cap 2026: $106.03B

Southern Company market cap in 2026 was $106.03B, grew 9.6% from 2025. This figure represents the highest annual value in the available history.

Southern Company Market Cap 2025: $96.70B

2025's market cap for Southern Company came in at $96.70B, grew 6.5% from 2024.

Southern Company Market Cap 2024: $90.80B

Southern Company posted market cap of $90.80B in 2024, grew 17.9% from 2023.

Southern Company Market Cap 2023: $76.99B

In 2023, Southern Company reported market cap of $76.99B, edged down 0.3% below 2022.

Southern Company Market Cap 2022: $77.19B

Southern Company market cap in 2022 was $77.19B.

See more financial history for Southern Company (SO).

Sector peers by Market Cap

Utilities peers of Southern Company (SO), ranked by their latest market cap

Frequently asked questions