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

ATO has the lower trailing P/E: ATO trades at 18.71 and NRG at 24.99. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, ATO or NRG?

Over the past five years, NRG grew revenue faster — ATO at a 8.23% CAGR versus NRG at 15.13%.

Does ATO or NRG pay a bigger dividend?

ATO yields 2.55% and NRG yields 1.96% based on trailing dividends and the latest price.

Is ATO or NRG more profitable?

ATO runs the higher net margin — ATO at 28.50% versus NRG at 2.31%.

How have ATO and NRG total returns compared?

Over the past 10 years, ATO delivered 10.33% and NRG delivered 26.43% annualized total return. Past performance doesn't predict future results.

Atmos Energy Corporation (ATO) vs NRG Energy, Inc. (NRG)

A side-by-side comparison of Atmos Energy Corporation and NRG Energy, Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of October 4, 2026. Differences are shown without an overall score or investment verdict.

ATO

Atmos Energy Corporation

$26.23B

$157.17UtilitiesDelayed quote: Oct 2, 2026, 4:00 PM EDT

NRG

NRG Energy, Inc.

$20.09B

$95.23UtilitiesDelayed quote: Oct 2, 2026, 4:00 PM EDT

Total return — ATO vs NRG

growth of $100 · dividends reinvested · last 10y

ATO +165.8% (+10.3%/yr)NRG +967.4% (+26.7%/yr)NRG compounded faster over this window

ATO NRG

ATO vs NRG: by the numbers

•ATO is the larger company ($26.23B vs $20.09B market cap).
•ATO trades at the lower trailing earnings multiple (18.71 vs 24.99 P/E), one valuation lens rather than an overall verdict.
•ATO converts more revenue to profit (28.50% vs 2.31% net margin).
•NRG grew revenue faster over the past five years (15.13% vs 8.23% CAGR).
•ATO pays the higher dividend yield (2.55% vs 1.96%).

Metrics side by side

Valuation

Metric	ATO	NRG
P/E ratio	18.71	24.99
Forward P/E	17.40	10.71
PEG ratio	2.12	1.77
P/S ratio	5.33	0.55
P/B ratio	1.72	4.14
EV / EBITDA	13.85	10.36
FCF yield	N/A	1.73%

Profitability

Metric	ATO	NRG
Gross margin	52.37%	16.42%
Operating margin	36.97%	5.38%
Net margin	28.50%	2.31%
ROE	9.19%	17.49%
ROIC	4.81%	5.38%

Dividends

Metric	ATO	NRG
Dividend yield	2.55%	1.96%
Payout ratio	47.62%	48.95%

Growth (annualized)

Metric	ATO	NRG
Revenue CAGR (5Y)	8.23%	15.13%
EPS CAGR (5Y)	9.05%	14.48%
FCF CAGR (5Y)	N/A	-22.77%
Total return CAGR (5Y)	14.89%	21.69%

Frequently asked

Which has the lower trailing P/E, ATO or NRG?: ATO has the lower trailing P/E: ATO trades at 18.71 and NRG at 24.99. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, ATO or NRG?: Over the past five years, NRG grew revenue faster — ATO at a 8.23% CAGR versus NRG at 15.13%.
Does ATO or NRG pay a bigger dividend?: ATO yields 2.55% and NRG yields 1.96% based on trailing dividends and the latest price.
Is ATO or NRG more profitable?: ATO runs the higher net margin — ATO at 28.50% versus NRG at 2.31%.
How have ATO and NRG total returns compared?: Over the past 10 years, ATO delivered 10.33% and NRG delivered 26.43% annualized total return. Past performance doesn't predict future results.

Go deeper

Full ATO analysis Full NRG analysis Interactive comparison tool

Dig into the metrics

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

Atmos Energy & NRG Energy appear in these rankings

Highest Dividend Yield Stocks 25+ Year Dividend Growers Fastest Revenue Growth Stocks 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 October 4, 2026.