EN DE
STOCK COMPARISON

Atmos Energy vs Naturgy Energy Group: Fair Value & Quality

Both stocks run through our valuation models. Here is how Atmos Energy (ATO) and Naturgy Energy Group (NTGY) compare, as of Aug 8, 2026.

As of Aug 8, 2026, Fair Value Calculator sees Naturgy Energy Group as the more attractively valued of the two: Atmos Energy trades at $172 versus a fair value of $85.67 (-50%), while Naturgy Energy Group trades at €28.78 versus €35.80 (+24%).
Atmos Energy
ATO · USD · Utilities
-50%
upside to fair value
overvalued
Price$172
Fair Value$85.67
Quality48/100
Naturgy Energy Group
NTGY.MC · EUR · Utilities
+24%
upside to fair value
undervalued
Price€28.78
Fair Value€35.80
Quality61/100

Head-to-head numbers

Green value = the better side for that row (for valuation multiples: lower = cheaper).

Atmos EnergyNaturgy Energy Group
Valuation
21.9×P/E (TTM)13.0×
6.08×P/S (TTM)1.62×
2.19×P/B3.30×
15.1×EV/EBITDA7.9×
2.15×PEG6.40×
2.1%Dividend yield—
$3.74Dividend per share—
Profitability
28%Net margin11%
39%Operating margin18%
10%Return on equity22%
4%Return on assets6%
Growth
1%Revenue growth (YoY)-7%
3.8%Avg. growth/yr (3Y)-17.0%
10.8%Avg. growth/yr (5Y)4.9%
Balance & size
0.66×Debt / equity1.38×
$30BMarket cap$31B
expensiveGrowth qualityhealthy

Atmos Energy leads: 8 to 5 metric wins.

Dash = not meaningfully computable, for example with negative equity.

Quality in detail

The quality score, broken down into the same factor families as on the stock page, 0 to 100 per family.

Atmos Energyof which business quality 40 · market factors 61 Naturgy Energy Groupof which business quality 52 · market factors 67
ProfitabilityMargins and returns on capital today
39
45
Quality GrowthAre margins and returns improving?
42
37
CashflowEarnings quality: real cash, not paper profit
45
67
Fin. StrengthBalance sheet, leverage, solvency risk
46
30
InvestmentDisciplined investing over empire-building
30
71
Low VolatilityCalm price path (market factor)
95
94
MomentumPrice trend over the last 3–12 months (market factor)
44
50
52W MomentumDistance to the 52-week high (market factor)
50
64
Net IssuanceBuybacks instead of dilution
29
76

What the models say

The median fair value (base case) per model family, each in the currency of its trading venue. Green = above the current price, red = below.

Atmos Energy

Earnings-Based$43.23
Dividend Discount$56.29
Multiples$119
Asset-Based$54.42
Economic Profit$54.17
Growth Earnings$126

16 of 16 models see the stock below the current price.

Naturgy Energy Group

DCF Models€32.33
Earnings-Based€26.55
Dividend Discount€23.41
Multiples€42.38
Asset-Based€6.76
Growth DCF€32.80
Economic Profit€20.95
Growth Earnings€33.88

9 of 24 models see the stock below the current price.

Scenario ranges

From our cautious bear case to the optimistic bull case. The white tick is the current price: left of fair value means room to run.

Atmos Energy
Bear $52.83Fair Value $85.67Bull $121
$172 = current price (white tick)
Naturgy Energy Group
Bear €21.46Fair Value €35.80Bull €49.13
€28.78 = current price (white tick)

Compare two other stocks

Tap a field and type again, ticker or company name.

Free, no sign-up

Ranked within their sector

Where each stock sits within its sector peer group. Band = middle 50% of peers, tick = median, dot = this stock.

Atmos Energy · Utilities

Quality score48 · below median
Fair value upside-50% · bottom 25%

Naturgy Energy Group · Utilities

Quality score61 · Top 25%
Fair value upside+24% · above median

Bottom line

As of Aug 8, 2026, Fair Value Calculator sees Naturgy Energy Group as the more attractively valued of the two: Atmos Energy trades at $172 versus a fair value of $85.67 (-50%), while Naturgy Energy Group trades at €28.78 versus €35.80 (+24%).

Naturgy Energy Group has the higher quality score (61/100).

See the full analysis →
Atmos Energy · Naturgy Energy Group

More comparisons

Popular match-ups from the same sectors, all with fair value and quality score.

Related to Atmos Energy

Alphabet Inc Class C vs Verizon CommunicationsAlphabet Inc Class C vs At&tAlphabet Inc Class C vs NetEaseAmazon.com vs Toyota Motor Corporation

Related to Naturgy Energy Group

Amazon.com vs PDD HoldingsAmazon.com vs Sony GroupMeta Platforms vs Verizon CommunicationsMeta Platforms vs At&t
Free · Top-25 report

See the undervalued quality stocks every month

Just your email for the monthly Top-25 report of the most undervalued quality stocks, with fair value, quality and price target. Plus 14 days of Pro to try, no card.

Free. You confirm by email (double opt-in) and can unsubscribe anytime in one click. Not financial advice.

A model-based valuation snapshot from 21 models. Values change with price and fundamentals; the date shown above applies.