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

ATO has the lower trailing P/E: ATO trades at 19.43 and AWK at 23.82. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, ATO or AWK?

Over the past five years, ATO grew revenue faster — ATO at a 8.23% CAGR versus AWK at 6.32%.

Does ATO or AWK pay a bigger dividend?

ATO yields 2.43% and AWK yields 2.46% based on trailing dividends and the latest price.

Is ATO or AWK more profitable?

ATO runs the higher net margin — ATO at 28.50% versus AWK at 21.35%.

How have ATO and AWK total returns compared?

Over the past 10 years, ATO delivered 11.25% and AWK delivered 8.93% annualized total return. Past performance doesn't predict future results.

Atmos Energy Corporation (ATO) vs American Water Works Company, Inc. (AWK)

A side-by-side comparison of Atmos Energy Corporation and American Water Works Company, Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of September 10, 2026. Differences are shown without an overall score or investment verdict.

ATO

Atmos Energy Corporation

$27.24B

$163.19UtilitiesDelayed quote: Sep 11, 2026, 4:00 PM EDT

AWK

American Water Works Company, Inc.

$27.36B

$137.69UtilitiesDelayed quote: Sep 11, 2026, 4:00 PM EDT

Total return — ATO vs AWK

growth of $100 · dividends reinvested · last 10y

ATO +176.4% (+10.7%/yr)AWK +131.3% (+8.7%/yr)ATO compounded faster over this window

ATO AWK

ATO vs AWK: by the numbers

•AWK is the larger company ($27.36B vs $27.24B market cap).
•ATO trades at the lower trailing earnings multiple (19.43 vs 23.82 P/E), one valuation lens rather than an overall verdict.
•ATO converts more revenue to profit (28.50% vs 21.35% net margin).
•ATO grew revenue faster over the past five years (8.23% vs 6.32% CAGR).
•AWK pays the higher dividend yield (2.46% vs 2.43%).

Metrics side by side

Valuation

Metric	ATO	AWK
P/E ratio	19.43	23.82
Forward P/E	19.30	22.64
P/S ratio	5.53	5.18
P/B ratio	1.79	2.35
EV / EBITDA	14.24	14.98

Profitability

Metric	ATO	AWK
Gross margin	52.37%	47.20%
Operating margin	36.97%	36.94%
Net margin	28.50%	21.35%
ROE	9.19%	9.67%
ROIC	4.81%	4.35%

Dividends

Metric	ATO	AWK
Dividend yield	2.43%	2.46%
Payout ratio	47.62%	59.60%

Growth (annualized)

Metric	ATO	AWK
Revenue CAGR (5Y)	8.23%	6.32%
EPS CAGR (5Y)	9.05%	7.78%
Total return CAGR (5Y)	14.90%	-3.36%

Frequently asked

Which has the lower trailing P/E, ATO or AWK?: ATO has the lower trailing P/E: ATO trades at 19.43 and AWK at 23.82. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, ATO or AWK?: Over the past five years, ATO grew revenue faster — ATO at a 8.23% CAGR versus AWK at 6.32%.
Does ATO or AWK pay a bigger dividend?: ATO yields 2.43% and AWK yields 2.46% based on trailing dividends and the latest price.
Is ATO or AWK more profitable?: ATO runs the higher net margin — ATO at 28.50% versus AWK at 21.35%.
How have ATO and AWK total returns compared?: Over the past 10 years, ATO delivered 11.25% and AWK delivered 8.93% annualized total return. Past performance doesn't predict future results.

Go deeper

Full ATO analysis Full AWK analysis Interactive comparison tool

Dig into the metrics

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

Atmos Energy & American Water Works 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 September 10, 2026.