Which has the lower trailing P/E, ATO or WEC?

WEC has the lower trailing P/E: ATO trades at 21.25 and WEC at 21.21. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, ATO or WEC?

Over the past five years, ATO grew revenue faster — ATO at a 8.80% CAGR versus WEC at 4.98%.

Does ATO or WEC pay a bigger dividend?

ATO yields 2.24% and WEC yields 3.37% based on trailing dividends and the latest price.

Is ATO or WEC more profitable?

ATO runs the higher net margin — ATO at 27.58% versus WEC at 16.72%.

How have ATO and WEC total returns compared?

Over the past 10 years, ATO delivered 10.61% and WEC delivered 8.81% annualized total return. Past performance doesn't predict future results.

Atmos Energy Corporation (ATO) vs WEC Energy Group, Inc. (WEC)

A side-by-side comparison of Atmos Energy Corporation and WEC Energy Group, Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of August 1, 2026. Differences are shown without an overall score or investment verdict.

ATO

Atmos Energy Corporation

$28.84B

$172.78UtilitiesAt close: Jul 31, 2026, 4:00 PM ET

WEC

WEC Energy Group, Inc.

$35.64B

$109.42UtilitiesAt close: Jul 31, 2026, 4:00 PM ET

Total return — ATO vs WEC

growth of $100 · dividends reinvested · last 30y

ATO +2401.5%WEC +2250.0%ATO compounded faster

ATO WEC

ATO vs WEC: by the numbers

•WEC is the larger company ($35.64B vs $28.84B market cap).
•ATO converts more revenue to profit (27.58% vs 16.72% net margin).
•ATO grew revenue faster over the past five years (8.80% vs 4.98% CAGR).
•WEC pays the higher dividend yield (3.37% vs 2.24%).

Metrics side by side

Valuation

Metric	ATO	WEC
P/E ratio	21.25	21.21
Forward P/E	20.48	19.54
P/S ratio	5.94	3.55
P/B ratio	1.94	0.87
PEG ratio	2.18	20.88
EV / EBITDA	15.32	10.02

Profitability

Metric	ATO	WEC
Gross margin	51.43%	49.91%
Operating margin	35.87%	24.12%
Net margin	27.58%	16.72%
ROE	9.03%	4.09%
ROIC	4.58%	5.25%

Dividends

Metric	ATO	WEC
Dividend yield	2.24%	3.37%
Payout ratio	51.33%	75.93%

Growth (annualized)

Metric	ATO	WEC
Revenue CAGR (5Y)	8.80%	4.98%
EPS CAGR (5Y)	9.05%	5.04%
Total return CAGR (5Y)	14.67%	6.58%

Frequently asked

Which has the lower trailing P/E, ATO or WEC?: WEC has the lower trailing P/E: ATO trades at 21.25 and WEC at 21.21. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, ATO or WEC?: Over the past five years, ATO grew revenue faster — ATO at a 8.80% CAGR versus WEC at 4.98%.
Does ATO or WEC pay a bigger dividend?: ATO yields 2.24% and WEC yields 3.37% based on trailing dividends and the latest price.
Is ATO or WEC more profitable?: ATO runs the higher net margin — ATO at 27.58% versus WEC at 16.72%.
How have ATO and WEC total returns compared?: Over the past 10 years, ATO delivered 10.61% and WEC delivered 8.81% annualized total return. Past performance doesn't predict future results.

Go deeper

Full ATO analysis Full WEC analysis Interactive comparison tool

Dig into the metrics

Atmos Energy P/E ratio WEC Energy P/E ratio Atmos Energy dividend yield WEC Energy dividend yield Atmos Energy ROE WEC Energy ROE Atmos Energy operating margin WEC Energy operating margin Atmos Energy revenue growth WEC Energy revenue growth Atmos Energy free cash flow WEC Energy free cash flow

Atmos Energy & WEC Energy appear in these rankings

Highest Dividend Yield Stocks 25+ Year Dividend Growers Highest Operating Margin Stocks

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified August 1, 2026.