DTE Energy Company (DTE)
DTE Energy provides regulated electricity and natural gas across Michigan.
Utilities stock comparison
DTE vs SO: which business are you actually underwriting?
Compare DTE Energy Company with The Southern Company using their business models, SEC classifications, fiscal calendars, current primary filings, and the research questions that matter. This is a thesis framework—not a price target or automatic winner.
- Sector
- Utilities
- Industry
- Same SIC
- Shared themes
- 2
- Updated
- 2026-02-19
DTE vs SO: quick comparison
| Company fact | DTE | SO |
|---|---|---|
| Company | DTE Energy Company | The Southern Company |
| Exchange | NYSE | NYSE |
| Headquarters | Not recorded | Atlanta, Georgia |
| Founded | Not recorded | 1945 |
| SEC industry | Electric Services | Electric Services |
| Fiscal year-end | December 31 | December 31 |
| Latest annual filing | 10-K · 2026-02-17 | 10-K · 2026-02-19 |
How the businesses differ
The Southern Company (SO)
Southern Company provides regulated electricity and natural gas across several southeastern states. It recently completed new nuclear units, expanding its low-carbon generation base.
The useful starting point is not which ticker has performed better. It is whether the two companies convert the same economic forces into revenue and cash flow in the same way. DTE is classified by the SEC as Electric Services, while SO is classified as Electric Services. The matching industry code strengthens the peer comparison, although product mix can still differ materially.
Which thesis does each company fit?
Use the distinction below to decide which filing deserves deeper work. It is a research routing rule, not a recommendation or prediction.
Study DTE when…
- Interest rates and dividend-yield competition
- Data-center and AI electricity demand
- Rate-case outcomes and regulation
- The grid buildout and energy transition
Study SO when…
- Interest rates and dividend-yield competition
- Data-center and AI electricity demand
- Rate-case outcomes and regulation
- The grid buildout and energy transition
Shared research themes
US marketsRates & central banks
SEC filing comparison and disclosure evidence
Start with primary filings because fiscal calendars and accounting presentation can make superficially similar quarters incomparable.DTE's fiscal year ends December 31, while SO's ends December 31. Normalize the reporting periods before comparing growth, margins, capital intensity, or guidance.
The current verified House Clerk snapshot contains 0matched transaction rows for DTEand 0 for SO. These delayed, range-based disclosures can identify a filing to inspect; they do not establish motive, conviction, or a real-time trading signal.
DTE primary filings
SO primary filings
What this comparison cannot tell you
This page does not contain licensed live prices, a valuation model, earnings estimates, portfolio constraints, or a forecast of future returns. SEC classifications can be broad, company descriptions can lag strategic change, and the latest annual filing may predate a material acquisition or divestiture. Read subsequent quarterly and current reports before making a decision.
A stronger business is not automatically the better stock. Starting valuation, expectations, capital structure, cyclicality, dilution, and the probability of each thesis determine the investment outcome. Use this comparison to frame the work, then verify the numbers in the linked filings and current company disclosures.
More comparisons involving DTE or SO
DTE vs SO FAQs
Are DTE and SO direct competitors?
DTE Energy Company and The Southern Company share the SEC industry classification “Electric Services.” That makes the operating comparison relevant, but it does not prove that every product, customer, or revenue stream competes directly.
Which is better, DTE or SO?
There is no context-free winner. Compare the operating exposures, filing evidence, valuation, balance sheet, and risks against the specific thesis you are testing. This page deliberately does not turn a static profile into a buy or sell recommendation.
Does this DTE vs SO comparison include live prices?
No. Yield Theory does not republish unlicensed real-time market data. Use a regulated broker or licensed quote provider for current prices, then use the primary filings here to test the business thesis.
Where does the company information come from?
Company classifications, fiscal year-ends, and filing links come from the SEC EDGAR submissions API snapshot refreshed 2026-08-10. Business summaries and research themes are maintained by Yield Theory.
Data snapshot: SEC EDGAR submissions API, refreshed 2026-08-10. Independent educational research; not investment advice.
Go beyond DTE vs SO.
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