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Side-by-side financial comparison of Diversified Energy Co (DEC) and Southern Company (SO), based on the latest 10-Q / 10-K filings. Click either name above to swap in a different company.

Southern Company is the larger business by last-quarter revenue ($7.0B vs $499.8M, roughly 14.0× Diversified Energy Co). Diversified Energy Co runs the higher net margin — 34.2% vs 4.9%, a 29.4% gap on every dollar of revenue.

DTE Energy is a Detroit-based diversified energy company involved in the development and management of energy-related businesses and services in the United States and Canada. Its operating units include an electric utility serving 2.2 million customers and a natural gas utility serving 1.3 million customers in Michigan.

Southern Company is an American gas and electric utility holding company based in the Southern United States. It is headquartered in Atlanta, Georgia, with executive offices located in Birmingham, Alabama. As of 2021 it is the second largest utility company in the U.S. in terms of customer base. Through its subsidiaries it serves 9 million gas and electric utility customers in 6 states. Southern Company's regulated regional electric utilities serve a 120,000-square-mile (310,000 km2) territor...

DEC vs SO — Head-to-Head

Bigger by revenue
SO
SO
14.0× larger
SO
$7.0B
$499.8M
DEC
Higher net margin
DEC
DEC
29.4% more per $
DEC
34.2%
4.9%
SO

Income Statement — Q3 2025 vs Q4 2025

Metric
DEC
DEC
SO
SO
Revenue
$499.8M
$7.0B
Net Profit
$171.1M
$341.0M
Gross Margin
Operating Margin
36.2%
13.1%
Net Margin
34.2%
4.9%
Revenue YoY
10.1%
Net Profit YoY
-26.8%
EPS (diluted)
$2.14
$0.38

Green = leading value per metric. Periods may differ when fiscal calendars don't align — see 8-quarter trend below.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history — bar widths are scaled to the larger of the two companies so you can eyeball the size gap and growth trajectory without doing math. Quarters aligned by calendar period (report date) so offset fiscal years line up.

Revenue
DEC
DEC
SO
SO
Q4 25
$7.0B
Q3 25
$499.8M
$7.8B
Q2 25
$600.3M
$7.0B
Q1 25
$62.5M
$7.8B
Q4 24
$6.3B
Q3 24
$7.3B
Q2 24
$6.5B
Q1 24
$6.6B
Net Profit
DEC
DEC
SO
SO
Q4 25
$341.0M
Q3 25
$171.1M
$1.7B
Q2 25
$297.7M
$880.0M
Q1 25
$-323.2M
$1.3B
Q4 24
$466.0M
Q3 24
$1.5B
Q2 24
$1.2B
Q1 24
$1.1B
Operating Margin
DEC
DEC
SO
SO
Q4 25
13.1%
Q3 25
36.2%
33.2%
Q2 25
48.5%
25.3%
Q1 25
-300.9%
25.9%
Q4 24
16.7%
Q3 24
32.6%
Q2 24
30.0%
Q1 24
25.6%
Net Margin
DEC
DEC
SO
SO
Q4 25
4.9%
Q3 25
34.2%
21.9%
Q2 25
49.6%
12.6%
Q1 25
-517.0%
16.3%
Q4 24
7.3%
Q3 24
21.1%
Q2 24
18.6%
Q1 24
16.1%
EPS (diluted)
DEC
DEC
SO
SO
Q4 25
$0.38
Q3 25
$2.14
$1.54
Q2 25
$3.67
$0.79
Q1 25
$-5.52
$1.21
Q4 24
$0.48
Q3 24
$1.39
Q2 24
$1.09
Q1 24
$1.03

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest filing — the kind of financial-strength check premium terminals charge for.

Metric
DEC
DEC
SO
SO
Cash + ST InvestmentsLiquidity on hand
$1.6B
Total DebtLower is stronger
$65.6B
Stockholders' EquityBook value
$36.0B
Total Assets
$155.7B
Debt / EquityLower = less leverage
1.82×

8-quarter trend — quarters aligned by calendar period so offset fiscal years match up.

Cash + ST Investments
DEC
DEC
SO
SO
Q4 25
$1.6B
Q3 25
$3.3B
Q2 25
$23.7M
$1.3B
Q1 25
$2.3B
Q4 24
$1.1B
Q3 24
$1.0B
Q2 24
$1.2B
Q1 24
$713.0M
Total Debt
DEC
DEC
SO
SO
Q4 25
$65.6B
Q3 25
$64.6B
Q2 25
$63.0B
Q1 25
$62.9B
Q4 24
$58.8B
Q3 24
$61.3B
Q2 24
$59.9B
Q1 24
$59.4B
Stockholders' Equity
DEC
DEC
SO
SO
Q4 25
$36.0B
Q3 25
$38.3B
Q2 25
$727.7M
$37.3B
Q1 25
$37.2B
Q4 24
$33.2B
Q3 24
$36.9B
Q2 24
$36.1B
Q1 24
$35.6B
Total Assets
DEC
DEC
SO
SO
Q4 25
$155.7B
Q3 25
$153.2B
Q2 25
$5.7B
$148.9B
Q1 25
$148.1B
Q4 24
$145.2B
Q3 24
$144.0B
Q2 24
$141.9B
Q1 24
$140.1B
Debt / Equity
DEC
DEC
SO
SO
Q4 25
1.82×
Q3 25
1.69×
Q2 25
1.69×
Q1 25
1.69×
Q4 24
1.77×
Q3 24
1.66×
Q2 24
1.66×
Q1 24
1.67×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Net income can be massaged; cash flow is harder to fake.

Metric
DEC
DEC
SO
SO
Operating Cash FlowLast quarter
$2.6B
Free Cash FlowOCF − Capex
$-1.7B
FCF MarginFCF / Revenue
-24.2%
Capex IntensityCapex / Revenue; lower = less reinvestment burden
61.4%
Cash ConversionOCF / Net Profit; >1× = earnings back up with cash
7.62×
TTM Free Cash FlowTrailing 4 quarters
$-2.9B

8-quarter trend — quarters aligned by calendar period so offset fiscal years match up.

Operating Cash Flow
DEC
DEC
SO
SO
Q4 25
$2.6B
Q3 25
$3.8B
Q2 25
$2.2B
Q1 25
$1.3B
Q4 24
$2.2B
Q3 24
$3.6B
Q2 24
$2.7B
Q1 24
$1.3B
Free Cash Flow
DEC
DEC
SO
SO
Q4 25
$-1.7B
Q3 25
$559.0M
Q2 25
$-619.0M
Q1 25
$-1.2B
Q4 24
$-576.0M
Q3 24
$1.3B
Q2 24
$563.0M
Q1 24
$-459.0M
FCF Margin
DEC
DEC
SO
SO
Q4 25
-24.2%
Q3 25
7.1%
Q2 25
-8.9%
Q1 25
-15.3%
Q4 24
-9.1%
Q3 24
17.9%
Q2 24
8.7%
Q1 24
-6.9%
Capex Intensity
DEC
DEC
SO
SO
Q4 25
61.4%
Q3 25
41.1%
Q2 25
40.2%
Q1 25
31.3%
Q4 24
43.4%
Q3 24
31.8%
Q2 24
32.9%
Q1 24
26.6%
Cash Conversion
DEC
DEC
SO
SO
Q4 25
7.62×
Q3 25
2.21×
Q2 25
2.48×
Q1 25
0.98×
Q4 24
4.66×
Q3 24
2.36×
Q2 24
2.23×
Q1 24
1.22×

Financial Flow Comparison

Sankey diagram of revenue → gross profit → operating profit → net profit for each company. Charts shown full-width and stacked so both segment hierarchies are readable side-by-side on desktop and mobile.

Revenue Breakdown by Segment

DEC
DEC

Segment breakdown not available.

SO
SO

Other$3.9B57%
Retail Electric Commercial$1.6B23%
Natural Gas Distribution Residential$689.0M10%
Natural Gas Distribution Transportation$371.0M5%
Wholesale Non Affiliates$123.0M2%
Natural Gas Distribution Other$76.0M1%
Wholesale Electric Non PPA Revenues$62.0M1%
Wholesale Affiliates$55.0M1%
Retail Electric Other$31.0M0%
Alternative Energy$20.0M0%
Natural Gas Distribution Industrial$15.0M0%

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