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

AEE has the lower trailing P/E: AEE trades at 19.30 and ATO at 21.25. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, AEE or ATO?

Over the past five years, ATO grew revenue faster — AEE at a 7.86% CAGR versus ATO at 8.80%.

Does AEE or ATO pay a bigger dividend?

AEE yields 2.66% and ATO yields 2.24% based on trailing dividends and the latest price.

Is AEE or ATO more profitable?

ATO runs the higher net margin — AEE at 17.86% versus ATO at 27.58%.

How have AEE and ATO total returns compared?

Over the past 10 years, AEE delivered 10.82% and ATO delivered 10.61% annualized total return. Past performance doesn't predict future results.

Ameren Corporation (AEE) vs Atmos Energy Corporation (ATO)

A side-by-side comparison of Ameren Corporation and Atmos Energy Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of July 31, 2026. Differences are shown without an overall score or investment verdict.

AEE

Ameren Corporation

$30.33B

$109.61UtilitiesDelayed quote: Jul 31, 2026, 4:00 PM EDT

ATO

Atmos Energy Corporation

$28.84B

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

Total return — AEE vs ATO

growth of $100 · dividends reinvested · last 30y

AEE +959.1%ATO +2401.5%ATO compounded faster

AEE ATO

AEE vs ATO: by the numbers

•AEE is the larger company ($30.33B vs $28.84B market cap).
•AEE trades at the lower trailing earnings multiple (19.30 vs 21.25 P/E), one valuation lens rather than an overall verdict.
•ATO converts more revenue to profit (27.58% vs 17.86% net margin).
•ATO grew revenue faster over the past five years (8.80% vs 7.86% CAGR).
•AEE pays the higher dividend yield (2.66% vs 2.24%).

Metrics side by side

Valuation

Metric	AEE	ATO
P/E ratio	19.30	21.25
Forward P/E	20.37	20.48
P/S ratio	3.49	5.94
P/B ratio	2.23	1.94
PEG ratio	0.87	2.18
EV / EBITDA	8.41	15.32

Profitability

Metric	AEE	ATO
Gross margin	29.58%	51.43%
Operating margin	24.87%	35.87%
Net margin	17.86%	27.58%
ROE	11.42%	9.03%
ROIC	4.01%	4.58%

Dividends

Metric	AEE	ATO
Dividend yield	2.66%	2.24%
Payout ratio	54.28%	51.33%

Growth (annualized)

Metric	AEE	ATO
Revenue CAGR (5Y)	7.86%	8.80%
EPS CAGR (5Y)	8.79%	9.05%
Total return CAGR (5Y)	8.62%	14.67%

Frequently asked

Which has the lower trailing P/E, AEE or ATO?: AEE has the lower trailing P/E: AEE trades at 19.30 and ATO at 21.25. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, AEE or ATO?: Over the past five years, ATO grew revenue faster — AEE at a 7.86% CAGR versus ATO at 8.80%.
Does AEE or ATO pay a bigger dividend?: AEE yields 2.66% and ATO yields 2.24% based on trailing dividends and the latest price.
Is AEE or ATO more profitable?: ATO runs the higher net margin — AEE at 17.86% versus ATO at 27.58%.
How have AEE and ATO total returns compared?: Over the past 10 years, AEE delivered 10.82% and ATO delivered 10.61% annualized total return. Past performance doesn't predict future results.

Go deeper

Full AEE analysis Full ATO analysis Interactive comparison tool

Dig into the metrics

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

Ameren & Atmos 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 July 31, 2026.