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The Southern Company (SO)

The Southern Company at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

The Southern Company (SO) is a Regulated Electric company based in US with a market capitalization of $103.4B. Revenue grew 10.6% year-over-year and free cash flow was negative at -$3.6B. This page tracks SO's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

US · 28.31K employees · IPO Dec 31, 1981

Valuation

Valuation & price

$92.55 · as of May 17, 2026 · -7.2% vs 52w high

23.6

P/E ratio

Latest-FY diluted EPS

2.87

P/B ratio

Market cap ÷ book equity

—

Dividend yield

Price — last 12 months

$99.68$92.21$84.73Jul 25Dec 25Jun 26Jul 7, 25$91.66Jul 9, 25$91.96Jul 11, 25$92.66Jul 15, 25$92.47Jul 17, 25$93.33Jul 21, 25$94.79Jul 23, 25$95.13Jul 25, 25$95.35Jul 29, 25$95.20Jul 31, 25$94.48Aug 4, 25$96.00Aug 6, 25$94.68Aug 8, 25$94.69Aug 12, 25$93.96Aug 14, 25$94.19Aug 19, 25$94.18Aug 21, 25$94.62Aug 25, 25$93.13Aug 27, 25$93.28Aug 29, 25$92.30Sep 3, 25$91.66Sep 5, 25$91.78Sep 9, 25$91.21Sep 11, 25$92.13Sep 15, 25$92.28Sep 17, 25$91.63Sep 19, 25$91.80Sep 23, 25$93.72Sep 25, 25$93.69Sep 29, 25$93.91Oct 2, 25$93.89Oct 6, 25$95.49Oct 8, 25$96.18Oct 10, 25$98.29Oct 14, 25$99.68Oct 16, 25$98.43Oct 20, 25$97.69Oct 22, 25$97.48Oct 24, 25$95.88Oct 28, 25$93.91Oct 30, 25$95.07Nov 3, 25$93.15Nov 5, 25$91.41Nov 7, 25$91.44Nov 11, 25$91.14Nov 14, 25$90.69Nov 18, 25$90.69Nov 20, 25$88.57Nov 24, 25$89.14Nov 26, 25$90.24Dec 1, 25$89.01Dec 3, 25$87.98Dec 5, 25$86.28Dec 9, 25$85.49Dec 11, 25$84.73Dec 15, 25$86.00Dec 17, 25$87.03Dec 19, 25$85.28Dec 23, 25$86.39Dec 26, 25$87.17Dec 31, 25$87.20Jan 5, 26$86.87Jan 7, 26$86.27Jan 9, 26$87.01Jan 13, 26$87.55Jan 15, 26$88.78Jan 20, 26$88.82Jan 22, 26$87.51Jan 26, 26$88.16Jan 28, 26$88.33Jan 30, 26$89.31Feb 3, 26$90.13Feb 5, 26$91.08Feb 9, 26$89.38Feb 11, 26$90.86Feb 17, 26$92.00Feb 19, 26$95.05Feb 23, 26$95.18Feb 25, 26$95.92Feb 27, 26$97.38Mar 3, 26$96.79Mar 5, 26$97.20Mar 9, 26$97.25Mar 11, 26$96.26Mar 13, 26$98.01Mar 17, 26$98.27Mar 19, 26$96.23Mar 23, 26$93.75Mar 25, 26$94.61Mar 27, 26$95.55Apr 1, 26$96.94Apr 6, 26$96.94Apr 8, 26$97.17Apr 10, 26$97.15Apr 14, 26$95.96Apr 16, 26$94.90Apr 20, 26$93.51Apr 22, 26$91.87Apr 24, 26$93.49Apr 28, 26$94.41Apr 30, 26$96.70May 4, 26$95.99May 6, 26$93.51May 8, 26$91.80May 12, 26$93.47May 15, 26$92.55May 19, 26$94.14May 21, 26$94.24May 26, 26$94.09May 28, 26$92.52Jun 1, 26$89.03Jun 3, 26$90.49Jun 5, 26$92.60Jun 9, 26$92.95Jun 11, 26$93.27Jun 15, 26$93.82Jun 17, 26$92.53Jun 22, 26$93.43Jun 24, 26$95.78Jun 30, 26$96.47
$84.0852-week range$99.72
Loading valuation history…

Fundamentals

Key fundamentals

$103.4B

Market cap

10.6%

Revenue growth (YoY)

29.8%

Gross margin

-$3.6B

Free cash flow (USD)

$64.2B

Net debt

0.6%

Share dilution

3/5

Graham criteria passed

Defensive-investor screen

Utilities

Sector

Trajectory

Long-term trends

Revenue by year

2016 → 2025

FY 2016$19.9BFY 2017$23.0BFY 2018$23.5BFY 2019$21.4BFY 2020$20.4BFY 2021$23.1BFY 2022$29.3BFY 2023$25.3BFY 2024$26.7BFY 2025$29.6B
$19.9B$29.6B

Free cash flow by year

2016 → 2025

FY 2016$-2.4BFY 2017$-1.0BFY 2018$-1.1BFY 2019$-1.8BFY 2020$-745.0MFY 2021$-1.1BFY 2022$-1.6BFY 2023$-1.5BFY 2024$833.0MFY 2025$-3.6B
-$2.4B-$3.6B

Gross margin by year

2021 → 2025

FY 202144.3%FY 202236.3%FY 202346.4%FY 202449.9%FY 202529.8%
44.3%29.8%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

0

Insider buys · 90 days

2

Insider sells · 90 days

Earnings

Last report: 10-Q filed Apr 30, 2026

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • 8-K eventStock Issuance AgreementJun 8, 2026Filing
  • FinancingSecurities RegistrationJun 5, 2026Filing
  • Insider sellInsider Sell $9KKim Matthew M. · Comptroller · $9.1KJun 1, 2026Filing
  • 8-K eventAnnual Meeting ResultsMay 15, 2026Filing
  • Insider sellInsider Sell $10KKim Matthew M. · Comptroller · $9.7KMay 4, 2026Filing
  • Quarterly report10-Q FiledApr 30, 2026Filing
  • 8-K eventEarnings ReleaseApr 30, 2026Filing

Questions

Frequently asked questions

What is The Southern Company's market cap?

The Southern Company (SO) has a market capitalization of $103.4B.

What is SO's P/E ratio?

SO trades at a price-to-earnings ratio of 23.6, based on its latest fiscal-year diluted earnings per share and the most recent cached price.

What is SO's price-to-book (P/B) ratio?

SO trades at 2.87 times book value per share.

Are insiders buying SO stock?

SEC Form 4 filings show no open-market insider buys at The Southern Company in the last 90 days (2 sells).

Same arena

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AEP

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D

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SOMN

The Southern Company

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ETR

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Timeline

Every filing, insider trade & earnings on a price-anchored timeline

Filing Analyzer

Search the actual 10-K / 10-Q text with AI research angles

News

Latest press coverage in one feed

Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.