Is Atco or Iberdrola S.A. more undervalued?

As of Sep 5, 2026, Atco is at -34% to fair value and Iberdrola S.A. at -58%. Atco is the less overvalued of the two. Model-based estimate, not financial advice.

Which has higher quality, Atco or Iberdrola S.A.?

Atco has a quality score of 43/100 and Iberdrola S.A. 44/100. Iberdrola S.A. leads on quality.

STOCK COMPARISON

Atco vs Iberdrola S.A.: Fair Value & Quality

Both stocks run through our valuation models. Here is how Atco (ACO-X) and Iberdrola S.A. (IBE) compare, as of Sep 5, 2026.

As of Sep 5, 2026, Fair Value Calculator sees Atco as the less overvalued of the two: Atco trades at C$72.78 versus a fair value of C$48.13 (-34%), while Iberdrola S.A. trades at €19.89 versus €8.45 (-58%).

Atco

ACO-X.TO · CAD · Utilities

-34%

upside to fair value

overvalued

PriceC$72.78

Fair ValueC$48.13

Quality43/100

Iberdrola S.A.

IBE.MC · EUR · Utilities

-58%

upside to fair value

overvalued

Price€19.89

Fair Value€8.45

Quality44/100

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Head-to-head numbers

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

AtcoIberdrola S.A.

Valuation

56.4×P/E (TTM)26.2×

1.11×P/S (TTM)3.68×

1.27×P/B3.20×

8.6×EV/EBITDA14.3×

1.14×PEG3.50×

−33.9%Fair value upside−57.5%

2.8%Dividend yield3.5%

C$2.02Dividend per share€0.69

Profitability

28%Operating margin22%

0.45×EBIT margin trend (5Y)1.35×

3%Return on equity10%

2%Return on assets4%

Growth

1%Revenue growth (YoY)-5%

1.1%Avg. growth/yr (3Y)-5.5%

5.5%Avg. growth/yr (5Y)6.6%

−6.7%Value creation/yr+14.4%

Balance & size

1.2×Interest coverage (EBIT/interest)2.4×

2.80×Debt / equity0.84×

$6BMarket cap$160B

expensiveGrowth qualityweak

Even match: 8 to 8 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.

Atcoof which business quality 39 · market factors 81 Iberdrola S.A.of which business quality 42 · market factors 73

ProfitabilityMargins and returns on capital today

Quality GrowthAre margins and returns improving?

CashflowEarnings quality: real cash, not paper profit

Fin. StrengthBalance sheet, leverage, solvency risk

InvestmentDisciplined investing over empire-building

Low VolatilityCalm price path (market factor)

MomentumPrice trend over the last 3–12 months (market factor)

52W MomentumDistance to the 52-week high (market factor)

Net IssuanceBuybacks instead of dilution

What the models say

How far the median fair value (base case) per model family sits from the current price, in percent. The amount in the currency of the trading venue is shown underneath.

above the price, more than 15% above close to the price, 85% to 115% of the price below the price, more than 15% below

Model family	AtcoPrice C$72.78	Iberdrola S.A.Price €19.89
DCF Models	-48%below the priceC$38.02	-62%below the price€7.63
Earnings-Based	-81%below the priceC$13.55	-57%below the price€8.64
Dividend Discount	n/a	-85%below the price€3.06
Multiples	-64%below the priceC$26.00	-16%below the price€16.73
Asset-Based	-59%below the priceC$30.01	-74%below the price€5.10
Growth DCF	n/a	-60%below the price€7.98
Economic Profit	-57%below the priceC$31.25	-55%below the price€8.89
Growth Earnings	-71%below the priceC$21.47	-27%below the price€14.45
Minimum	-81%below the priceC$13.55	-85%below the price€3.06
Maximum	-48%below the priceC$38.02	-16%below the price€16.73
Median	-62%below the priceC$28.01	-58%below the price€8.31
Geometric mean	-65%below the priceC$25.42	-60%below the price€8.05

Minimum, maximum, median and geometric mean refer to the family values in this table. Geometric because deviations are ratios: half the price and twice the price average to 100%, not 125%.

Atco: 9 of 10 models see the stock below the current price.

Iberdrola S.A.: 23 of 23 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.

Atco

Bear C$36.11Fair Value C$48.13Bull C$60.17

C$72.78 = current price (white tick)

Iberdrola S.A.

Bear €7.06Fair Value €8.45Bull €17.90

€19.89 = current price (white tick)

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Ranked within their sector

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

Atco · Utilities

Quality score43 · below median

Fair value upside-34% · below median

Iberdrola S.A. · Utilities

Quality score44 · below median

Fair value upside-58% · bottom 25%

Bottom line

Iberdrola S.A. has the higher quality score (44/100).

See the full analysis →

Atco · Iberdrola S.A.

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A model-based valuation snapshot from 26 models. Values change with price and fundamentals; the date shown above applies.