AEP vs TLN vs SO Stock Comparison

American Electric Power, Talen Energy and Southern Prices as of Oct 28, 2026 Peers: Industry group
TLN Talen Energy Corp
$347.75 +14.6% 1M -11.7% 1Y
Market cap
$16.00B
P/E
–
Revenue (TTM)
$3.44B
Div. yield
–
Independent Power Producers Utilities
2 wins
SO Southern Co
$91.56 +11.2% 1M -2.5% 1Y
Market cap
$105.85B
P/E
22.7x
Revenue (TTM)
$30.18B
Div. yield
0.03%
Regulated Electric Utilities Utilities
6 wins

Head to Head

11 decided of 12

Southern leads on 6 of the 12 questions below (Southern 6, American Electric Power 3, Talen Energy 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAEPTLNSOLeader
Larger companyMarket capitalisation $70.38B $16.00B $105.85B SO
Cheaper on earningsLower P/E, profitable companies only 25.5x -86.5x 22.7x SO
Cheaper on forward earningsLower price / next fiscal year consensus EPS 21.3x 17.3x 18.9x TLN
Faster revenue growthRevenue growth, trailing twelve months +10.3% +60.8% +6.4% TLN
More profitableNet margin, trailing twelve months 12.1% -5.4% 15.4% SO
Better return on capitalReturn on invested capital 5.5% 0.9% 5.1% AEP
Less leveragedLower net debt / EBITDA 6.0x 19.3x 5.3x SO
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.03% –
Better 1-year returnPrice return, last 12 months +11.4% -11.7% -2.5% AEP
Better 5-year returnAnnualised price return, 5 years +8.6%/yr — +8.0%/yr AEP
Less volatileAnnualised volatility, 1 year 19.4% 57.1% 17.9% SO
Higher overall scoreMean of the five percentile scores vs peers 40/100 43/100 43/100 SO

Percentile Scorecard

AEPTLNSO

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

AxisAEPTLNSO
Valuation 24 #51 of 67 26 #18 of 24 36 #43 of 67
Growth 64 #24 of 65 59 #10 of 23 55 #30 of 65
Profitability 57 #27 of 62 36 #15 of 23 79 #14 of 62
Financial Health 28 #45 of 62 9 #22 of 24 34 #41 of 62
Shareholder Returns 29 #48 of 67 83 #4 of 19 12 #59 of 67
Overall 40 43 43
  • AEP ranked among 67 companies in Regulated Utilities
  • TLN ranked among 24 companies in Power Generation
  • SO ranked among 67 companies in Regulated Utilities

Price Performance

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

Returns

PeriodAEPTLNSOSPY
1 month +8.5%+14.6%+11.2% +0.9%
3 months -0.9%+10.0%-4.7% +5.9%
6 months -4.6%-1.2%-2.1% +8.5%
Year to date +11.2%-7.2%+5.0% +13.3%
1 year +11.4%-11.7%-2.5% +12.4%
3 years +71.1%+556.1%+37.6% +88.1%
3 years, per year +19.6%+87.3%+11.2% +23.5%
5 years +51.3%—+46.9% +68.2%
5 years, per year +8.6%—+8.0% +11.0%
10 years +102.2%—+80.6% +263.4%
10 years, per year +7.3%—+6.1% +13.8%

Risk

MeasureAEPTLNSOSPY
Volatility, 1Y 19.4%57.1%17.9% 12.7%
Downside volatility, 1Y 19.3%61.7%17.5% 12.7%
Beta vs S&P 500, 1Y -0.072.04-0.23 1.00
Return / volatility, 1Y 0.59-0.21-0.14 0.98
Max drawdown, 5Y -32.2%-35.7%-23.3% -25.4%
From 52-week high -7.6%-20.6%-7.6% -0.9%
52-week high $138.69$438.12$99.11 $779.14
52-week low $113.70$286.52$82.35 $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.

MultipleAEPTLNSO
P/E now vs peer median 25.3xmedian 20.8x -86.3xmedian 24.9x 22.4xmedian 20.8x
P/S now vs peer median 3.1xmedian 2.9x 4.8xmedian 2.7x 3.5xmedian 2.9x
EV/EBITDA now vs peer median 13.9xmedian 13.1x 53.8xmedian 11.6x 13.0xmedian 13.1x
P/FCF now vs peer median -12.1xmedian 35.3x 29.3xmedian 13.8x -32.2xmedian 35.3x
P/B now vs peer median 2.1xmedian 1.7x 10.2xmedian 2.1x 2.5xmedian 1.7x
PEG now vs peer median 2.73median 2.18 —median 0.61 0.70median 2.18

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 monthsAEPTLNSO
Revenue $22.79B $3.44B $30.18B
Gross profit $15.43B – $25.14B
Operating income $5.24B $88.00M $7.31B
Net income $3.07B -$185.00M $4.66B
Free cash flow -$5.75B $568.00M -$3.27B
EPS (diluted) $5.02 $-4.03 $4.08
Cash & equivalents $375.00M $231.00M $2.98B
Total debt $52.84B $9.57B $295.00B
Shares (diluted) 550.63M 45.90M 1.14B
Enterprise value $67.55B $13.55B $96.90B

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
MetricAEPTLNSO
P/E 25.3x -86.3x 22.4x
P/FCF -12.1x 29.3x -32.2x
P/Operating cash flow 9.1x 20.9x 9.9x
P/S 3.1x 4.8x 3.5x
P/B 2.1x 10.2x 2.5x
P/Tangible book 2.1x 10.2x 2.5x
EV/EBITDA 13.9x 53.8x 13.0x
EV/EBIT 23.3x 295.4x 24.4x
EV/Revenue 5.4x 7.6x 5.9x
EV/FCF -21.2x 45.8x -54.4x
EV/Operating cash flow 15.9x 32.7x 16.7x
PEG (3Y EPS CAGR) 2.73 – 0.70

Growth

14 metrics
MetricAEPTLNSO
Revenue growth (1Y) 10.3% 60.8% 6.4%
Revenue CAGR (3Y) 5.4% – 3.0%
Gross profit growth (1Y) 8.1% – 5.3%
Gross profit CAGR (3Y) 7.8% – 1.6%
Operating income growth (1Y) 2.2% -34.3% 1.5%
Operating income CAGR (3Y) 19.5% – 14.7%
Net income growth (1Y) -17.4% -206.9% 8.7%
Net income CAGR (3Y) 15.7% – 16.2%
EPS growth (1Y) 5.2% -203.2% 5.6%
EPS CAGR (3Y) 9.2% – 31.9%
Operating cash flow growth (1Y) 17.1% 1,121% 15.5%
Operating cash flow CAGR (3Y) 22.6% – 23.7%
Free cash flow growth (1Y) -63.5% 422.7% -152.2%
Free cash flow CAGR (3Y) -19.1% – -3.1%

Profitability

14 metrics
MetricAEPTLNSO
Gross margin 67.7% – 83.3%
EBITDA margin 38.4% 14.1% 45.2%
Operating margin 23.0% 2.6% 24.2%
Pretax margin 15.4% -3.6% 17.4%
Net margin 12.1% -5.4% 15.4%
FCF margin -25.2% 16.5% -10.8%
Operating cash flow margin 33.8% 23.2% 35.3%
Return on equity 9.6% -13.6% 9.2%
Return on assets 2.7% -1.4% 2.9%
Return on invested capital 5.5% 0.9% 5.1%
Return on capital employed 5.0% 0.8% 5.1%
Asset turnover 0.2x 0.3x 0.2x
Cash conversion (OCF / net income) 2.5x -4.3x 2.3x
Stock comp / revenue – 2.8% –

Financial Health

11 metrics
MetricAEPTLNSO
Debt / assets 43.5% 63.5% 46.6%
Debt / equity 1.6x 5.8x 1.8x
Net debt / EBITDA 6.0x 19.3x 5.3x
Debt / FCF -9.2x 16.9x -23.1x
Liabilities / assets 72.6% 89.1% 73.9%
Equity / assets 27.4% 10.9% 26.1%
Interest coverage 2.4x 0.2x 2.3x
Current ratio 0.5x 0.8x 0.8x
Quick ratio 0.3x 0.4x 0.4x
Cash ratio 0.0x 0.2x 0.2x
Altman Z-score 0.92 0.88 –

Shareholder Returns

7 metrics
MetricAEPTLNSO
Dividend yield 3.0% – 3.3%
Net buyback yield – 1.8% –
Shareholder yield 3.0% 1.8% 3.3%
Payout ratio (earnings) – – 66.6%
Payout ratio (FCF) – – -94.8%
Dividend growth (1Y) – – 4.7%
Dividend CAGR (3Y) – – 1.2%

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.

ConsensusAEPTLNSO
Forward P/E 21.3xFY2026 17.3xFY2026 18.9xFY2026
EPS, next fiscal year $6.01FY2026 $20.11FY2026 $4.84FY2026
EPS growth, next FY +0.7%FY2026 – +12.6%FY2026
EPS growth, the year after +19.0% +60.6% -3.1%
Revenue, next fiscal year $23.09BFY2026 $4.61BFY2026 $31.54BFY2026
Revenue growth, next FY +5.5%FY2026 +78.8%FY2026 +6.7%FY2026
Revenue growth, the year after +3.5% +4.7% +8.8%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAEPTLNSO
Held by institutions 92.1% 100.0% 72.5%
Institutions holding 1,985 637 2,363
Change in shares held, QoQ +13.2% +5.4% +5.7%
Institutions buying 1,065 379 1,248
Institutions selling 584 190 724
Buyers to sellers 1.82 1.99 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.

AEPTLNSO
AEP 1.00 0.12 0.77
TLN 0.12 1.00 0.00
SO 0.77 0.00 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AEP, TLN and SO?

Southern (SO) is the largest by market capitalisation: American Electric Power (AEP) $70.38B, Talen Energy (TLN) $16.00B, Southern (SO) $105.85B.

Which stock is cheaper, AEP, TLN and SO?

Southern (SO) trades on the lowest price-to-earnings ratio (American Electric Power (AEP) 25.5x, Talen Energy (TLN) -86.5x, Southern (SO) 22.7x). On next year's consensus earnings, Talen Energy (TLN) is cheapest (American Electric Power (AEP) 21.3x, Talen Energy (TLN) 17.3x, Southern (SO) 18.9x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Talen Energy (TLN) grew revenue fastest over the trailing twelve months: American Electric Power (AEP) +10.3%, Talen Energy (TLN) +60.8%, Southern (SO) +6.4%.

Which company is more profitable?

Southern (SO) has the highest net margin (American Electric Power (AEP) 12.1%, Talen Energy (TLN) -5.4%, Southern (SO) 15.4%). On return on invested capital, American Electric Power (AEP) leads (American Electric Power (AEP) 5.5%, Talen Energy (TLN) 0.9%, Southern (SO) 5.1%).

Which stock has performed better?

Over the past year American Electric Power (AEP) returned the most: American Electric Power (AEP) +11.4%, Talen Energy (TLN) -11.7%, Southern (SO) -2.5%. Over five years, American Electric Power (AEP) compounded fastest (American Electric Power (AEP) +8.6%/yr, Southern (SO) +8.0%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: American Electric Power (AEP) 0.00%, Talen Energy (TLN) 0.00%, Southern (SO) 0.03%. American Electric Power (AEP) and Talen Energy (TLN) 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%, Talen Energy (TLN) 57.1%, Southern (SO) 17.9%). Volatility measures how widely the price swings, not the risk of the business.

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

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.