AEP vs SO vs TAC Stock Comparison

American Electric Power, Southern and Transalta Prices as of Oct 26, 2026 Peers: Industry group
SO Southern Co
$92.56 +11.7% 1M -3.5% 1Y
Market cap
$104.75B
P/E
22.5x
Revenue (TTM)
$30.18B
Div. yield
0.03%
Regulated Electric Utilities Utilities
6 wins
TAC Transalta Corp
$12.28 +6.5% 1M -28.9% 1Y
Market cap
$3.77B
P/E
–
Revenue (TTM)
$1.64B
Div. yield
0.01%
Independent Power Producers Utilities
2 wins

Head to Head

12 decided of 12

Southern leads on 6 of the 12 questions below (Southern 6, American Electric Power 4, Transalta 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAEPSOTACLeader
Larger companyMarket capitalisation $70.22B $104.75B $3.77B SO
Cheaper on earningsLower P/E, profitable companies only 25.4x 22.5x -68.9x SO
Cheaper on forward earningsLower price / next fiscal year consensus EPS 21.5x 19.1x 51.2x SO
Faster revenue growthRevenue growth, trailing twelve months +10.3% +6.4% -8.8% AEP
More profitableNet margin, trailing twelve months 12.1% 15.4% -3.3% SO
Better return on capitalReturn on invested capital 5.5% 5.1% 0.0% AEP
Less leveragedLower net debt / EBITDA 6.0x 5.3x 4.8x TAC
Higher dividend yieldTrailing dividend yield 0.00% 0.03% 0.01% SO
Better 1-year returnPrice return, last 12 months +11.4% -3.5% -28.9% AEP
Better 5-year returnAnnualised price return, 5 years +8.9%/yr +8.1%/yr +1.5%/yr AEP
Less volatileAnnualised volatility, 1 year 19.4% 17.9% 40.7% SO
Higher overall scoreMean of the five percentile scores vs peers 41/100 43/100 46/100 TAC

Percentile Scorecard

AEPSOTAC

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisAEPSOTAC
Valuation 23 #52 of 67 36 #43 of 67 70 #8 of 24
Growth 64 #24 of 65 53 #31 of 65 27 #17 of 23
Profitability 59 #27 of 64 78 #15 of 64 55 #11 of 23
Financial Health 29 #46 of 64 35 #42 of 64 30 #17 of 24
Shareholder Returns 30 #47 of 67 15 #57 of 67 47 #11 of 20
Overall 41 43 46
  • AEP ranked among 67 companies in Regulated Utilities
  • SO ranked among 67 companies in Regulated Utilities
  • TAC ranked among 24 companies in Power Generation

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodAEPSOTACSPY
1 month +9.2%+11.7%+6.5% -0.8%
3 months -3.3%-4.1%-8.6% +3.5%
6 months -4.3%-1.3%-2.5% +7.0%
Year to date +12.1%+6.1%-2.8% +12.2%
1 year +11.4%-3.5%-28.9% +13.0%
3 years +72.5%+39.1%+67.1% +86.3%
3 years, per year +19.9%+11.6%+18.7% +23.1%
5 years +53.3%+47.8%+7.9% +68.6%
5 years, per year +8.9%+8.1%+1.5% +11.0%
10 years +103.4%+81.6%+174.7% +258.0%
10 years, per year +7.4%+6.1%+10.6% +13.6%

Risk

MeasureAEPSOTACSPY
Volatility, 1Y 19.4%17.9%40.7% 12.7%
Downside volatility, 1Y 19.2%17.5%44.3% 12.7%
Beta vs S&P 500, 1Y -0.07-0.231.09 1.00
Return / volatility, 1Y 0.59-0.19-0.71 1.02
Max drawdown, 5Y -32.2%-23.3%-48.4% -25.4%
From 52-week high -6.8%-6.6%-30.7% -1.8%
52-week high $138.69$99.11$17.73 $779.14
52-week low $113.70$82.35$11.53 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleAEPSOTAC
P/E now vs peer median 25.5xmedian 20.8x 22.6xmedian 20.8x -66.6xmedian 24.4x
P/S now vs peer median 3.1xmedian 2.9x 3.5xmedian 2.9x 2.2xmedian 2.7x
EV/EBITDA now vs peer median 14.0xmedian 13.1x 13.1xmedian 13.1x 11.3xmedian 11.3x
P/FCF now vs peer median -12.2xmedian 36.7x -32.6xmedian 36.7x 12.9xmedian 12.9x
P/B now vs peer median 2.1xmedian 1.7x 2.5xmedian 1.7x 2.8xmedian 2.1x
PEG now vs peer median 2.76median 2.23 0.71median 2.23 2.10median 0.59

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsAEPSOTAC
Revenue $22.79B $30.18B $1.64B
Gross profit $15.43B $25.14B $1.05B
Operating income $5.24B $7.31B $201.41M
Net income $3.07B $4.66B -$17.93M
Free cash flow -$5.75B -$3.27B $281.42M
EPS (diluted) $5.02 $4.08 $-0.18
Cash & equivalents $375.00M $2.98B $212.54M
Total debt $52.84B $295.00B $2.98B
Shares (diluted) 550.63M 1.14B 297.00M
Enterprise value $67.39B $95.81B $2.67B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricAEPSOTAC
P/E 25.5x 22.6x -66.6x
P/FCF -12.2x -32.6x 12.9x
P/Operating cash flow 9.1x 10.0x 7.6x
P/S 3.1x 3.5x 2.2x
P/B 2.1x 2.5x 2.8x
P/Tangible book 2.1x 2.5x 3.2x
EV/EBITDA 14.0x 13.1x 11.3x
EV/EBIT 23.4x 24.5x 31.3x
EV/Revenue 5.4x 5.9x 3.8x
EV/FCF -21.3x -54.8x 22.4x
EV/Operating cash flow 15.9x 16.8x 13.1x
PEG (3Y EPS CAGR) 2.76 0.71 2.10

Growth

14 metrics
MetricAEPSOTAC
Revenue growth (1Y) 10.3% 6.4% -8.8%
Revenue CAGR (3Y) 5.4% 3.0% -14.4%
Gross profit growth (1Y) 8.1% 5.3% -4.9%
Gross profit CAGR (3Y) 7.8% 1.6% -12.3%
Operating income growth (1Y) 2.2% 1.5% 44.6%
Operating income CAGR (3Y) 19.5% 14.7% -29.4%
Net income growth (1Y) -17.4% 8.7% 81.0%
Net income CAGR (3Y) 15.7% 16.2% -27.1%
EPS growth (1Y) 5.2% 5.6% 60.3%
EPS CAGR (3Y) 9.2% 31.9% -31.7%
Operating cash flow growth (1Y) 17.1% 15.5% 9.7%
Operating cash flow CAGR (3Y) 22.6% 23.7% -14.2%
Free cash flow growth (1Y) -63.5% -152.2% 38.4%
Free cash flow CAGR (3Y) -19.1% -3.1% -2.3%

Profitability

14 metrics
MetricAEPSOTAC
Gross margin 67.7% 83.3% 63.9%
EBITDA margin 38.4% 45.2% 34.0%
Operating margin 23.0% 24.2% 12.3%
Pretax margin 15.4% 17.4% 0.4%
Net margin 12.1% 15.4% -3.3%
FCF margin -25.2% -10.8% 17.2%
Operating cash flow margin 33.8% 35.3% 29.4%
Return on equity 9.6% 9.2% -1.5%
Return on assets 2.7% 2.9% -0.3%
Return on invested capital 5.5% 5.1% 0.0%
Return on capital employed 5.0% 5.1% –
Asset turnover 0.2x 0.2x 0.3x
Cash conversion (OCF / net income) 2.5x 2.3x -26.9x
Stock comp / revenue – – –

Financial Health

11 metrics
MetricAEPSOTAC
Debt / assets 43.5% 46.6% 47.9%
Debt / equity 1.6x 1.8x 2.3x
Net debt / EBITDA 6.0x 5.3x 4.8x
Debt / FCF -9.2x -23.1x 10.6x
Liabilities / assets 72.6% 73.9% 79.1%
Equity / assets 27.4% 26.1% 20.9%
Interest coverage 2.4x 2.3x 0.8x
Current ratio 0.5x 0.8x –
Quick ratio 0.3x 0.4x –
Cash ratio 0.0x 0.2x –
Altman Z-score 0.92 – –

Shareholder Returns

7 metrics
MetricAEPSOTAC
Dividend yield 2.9% 3.2% 2.3%
Net buyback yield – – -6.2%
Shareholder yield 2.9% 3.2% -4.0%
Payout ratio (earnings) – 66.6% -193.0%
Payout ratio (FCF) – -94.8% 12.3%
Dividend growth (1Y) – 4.7% -5.0%
Dividend CAGR (3Y) – 1.2% 3.6%

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusAEPSOTAC
Forward P/E 21.5xFY2026 19.1xFY2026 51.2xFY2026
EPS, next fiscal year $6.01FY2026 $4.84FY2026 $0.24FY2026
EPS growth, next FY +0.7%FY2026 +12.6%FY2026 +71.4%FY2026
EPS growth, the year after +19.0% -3.1% +54.2%
Revenue, next fiscal year $23.09BFY2026 $31.54BFY2026 $1.40BFY2026
Revenue growth, next FY +5.5%FY2026 +6.7%FY2026 -20.0%FY2026
Revenue growth, the year after +3.5% +8.8% +23.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAEPSOTAC
Held by institutions 92.1% 72.5% –
Institutions holding 1,984 2,363 –
Change in shares held, QoQ +13.2% +5.7% –
Institutions buying 1,064 1,248 –
Institutions selling 584 724 –
Buyers to sellers 1.82 1.72 –

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

AEPSOTAC
AEP 1.00 0.72 0.13
SO 0.72 1.00 0.02
TAC 0.13 0.02 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AEP, SO and TAC?

Southern (SO) is the largest by market capitalisation: American Electric Power (AEP) $70.22B, Southern (SO) $104.75B, Transalta (TAC) $3.77B.

Which stock is cheaper, AEP, SO and TAC?

Southern (SO) trades on the lowest price-to-earnings ratio (American Electric Power (AEP) 25.4x, Southern (SO) 22.5x, Transalta (TAC) -68.9x). On next year's consensus earnings, Southern (SO) is cheapest (American Electric Power (AEP) 21.5x, Southern (SO) 19.1x, Transalta (TAC) 51.2x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

American Electric Power (AEP) grew revenue fastest over the trailing twelve months: American Electric Power (AEP) +10.3%, Southern (SO) +6.4%, Transalta (TAC) -8.8%.

Which company is more profitable?

Southern (SO) has the highest net margin (American Electric Power (AEP) 12.1%, Southern (SO) 15.4%, Transalta (TAC) -3.3%). On return on invested capital, American Electric Power (AEP) leads (American Electric Power (AEP) 5.5%, Southern (SO) 5.1%, Transalta (TAC) 0.0%).

Which stock has performed better?

Over the past year American Electric Power (AEP) returned the most: American Electric Power (AEP) +11.4%, Southern (SO) -3.5%, Transalta (TAC) -28.9%. Over five years, American Electric Power (AEP) compounded fastest (American Electric Power (AEP) +8.9%/yr, Southern (SO) +8.1%/yr, Transalta (TAC) +1.5%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Southern (SO) has the highest dividend yield: American Electric Power (AEP) 0.00%, Southern (SO) 0.03%, Transalta (TAC) 0.01%. American Electric Power (AEP) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Southern (SO) has been the steadiest (American Electric Power (AEP) 19.4%, Southern (SO) 17.9%, Transalta (TAC) 40.7%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AEP, SO and TAC?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Southern (SO) leads on 6. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.