TAC vs SO vs SU Stock Comparison

Transalta, Southern and Suncor Energy Prices as of Oct 26, 2026 Peers: Industry group
TAC Transalta Corp
$12.28 +6.5% 1M -28.9% 1Y
Market cap
$3.82B
P/E
–
Revenue (TTM)
$1.64B
Div. yield
0.01%
Independent Power Producers Utilities
SO Southern Co
$92.56 +11.7% 1M -3.5% 1Y
Market cap
$105.29B
P/E
22.6x
Revenue (TTM)
$30.18B
Div. yield
0.03%
Regulated Electric Utilities Utilities
6 wins
SU Suncor Energy Inc
$79.48 +16.5% 1M +99.5% 1Y
Market cap
$92.80B
P/E
6.8x
Revenue (TTM)
-$3.60B
Div. yield
-0.03%
Integrated Oil and Gas Energy
6 wins

Head to Head

12 decided of 12

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

QuestionTACSOSULeader
Larger companyMarket capitalisation $3.82B $105.29B $92.80B SO
Cheaper on earningsLower P/E, profitable companies only -69.8x 22.6x 6.8x SU
Cheaper on forward earningsLower price / next fiscal year consensus EPS 51.2x 19.1x 8.5x SU
Faster revenue growthRevenue growth, trailing twelve months -8.8% +6.4% -108.8% SO
More profitableNet margin, trailing twelve months -3.3% 15.4% — SO
Better return on capitalReturn on invested capital 0.0% 5.1% — SO
Less leveragedLower net debt / EBITDA 4.8x 5.3x 0.5x SU
Higher dividend yieldTrailing dividend yield 0.01% 0.03% -0.03% SO
Better 1-year returnPrice return, last 12 months -28.9% -3.5% +99.5% SU
Better 5-year returnAnnualised price return, 5 years +1.5%/yr +8.1%/yr +28.3%/yr SU
Less volatileAnnualised volatility, 1 year 40.7% 17.9% 27.5% SO
Higher overall scoreMean of the five percentile scores vs peers 46/100 43/100 64/100 SU

Percentile Scorecard

TACSOSU

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

AxisTACSOSU
Valuation 70 #8 of 24 36 #43 of 67 74 #27 of 99
Growth 27 #17 of 23 53 #31 of 65 65 #35 of 97
Profitability 55 #11 of 23 78 #15 of 64 72 #28 of 96
Financial Health 30 #17 of 24 35 #42 of 64 75 #26 of 102
Shareholder Returns 47 #11 of 20 15 #57 of 67 35 #50 of 76
Overall 46 43 64
  • TAC ranked among 24 companies in Power Generation
  • SO ranked among 67 companies in Regulated Utilities
  • SU ranked among 103 companies in Oil and Gas Upstream

Price Performance

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

Returns

PeriodTACSOSUSPY
1 month +6.5%+11.7%+16.5% -0.8%
3 months -8.6%-4.1%+24.2% +3.5%
6 months -2.5%-1.3%+23.3% +7.0%
Year to date -2.8%+6.1%+79.2% +12.2%
1 year -28.9%-3.5%+99.5% +13.0%
3 years +67.1%+39.1%+144.8% +86.3%
3 years, per year +18.7%+11.6%+34.8% +23.1%
5 years +7.9%+47.8%+247.2% +68.6%
5 years, per year +1.5%+8.1%+28.3% +11.0%
10 years +174.7%+81.6%+169.5% +258.0%
10 years, per year +10.6%+6.1%+10.4% +13.6%

Risk

MeasureTACSOSUSPY
Volatility, 1Y 40.7%17.9%27.5% 12.7%
Downside volatility, 1Y 44.3%17.5%28.2% 12.7%
Beta vs S&P 500, 1Y 1.09-0.23-0.39 1.00
Return / volatility, 1Y -0.71-0.193.63 1.02
Max drawdown, 5Y -48.4%-23.3%-37.3% -25.4%
From 52-week high -30.7%-6.6%0.0% -1.8%
52-week high $17.73$99.11$79.48 $779.14
52-week low $11.53$82.35$39.51 $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.

MultipleTACSOSU
P/E now vs peer median -66.6xmedian 24.4x 22.6xmedian 20.8x 7.1xmedian 13.5x
P/S now vs peer median 2.2xmedian 2.7x 3.5xmedian 2.9x -26.4xmedian 2.1x
EV/EBITDA now vs peer median 11.3xmedian 11.3x 13.1xmedian 13.1x 11.4xmedian 5.9x
P/FCF now vs peer median 12.9xmedian 12.9x -32.6xmedian 36.7x 4.8xmedian 11.0x
P/B now vs peer median 2.8xmedian 2.1x 2.5xmedian 1.7x 2.0xmedian 1.5x
PEG now vs peer median 2.10median 0.59 0.71median 2.23 0.19median 2.27

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 monthsTACSOSU
Revenue $1.64B $30.18B -$3.60B
Gross profit $1.05B $25.14B –
Operating income $201.41M $7.31B $1.71B
Net income -$17.93M $4.66B $8.93B
Free cash flow $281.42M -$3.27B $19.78B
EPS (diluted) $-0.18 $4.08 $11.22
Cash & equivalents $212.54M $2.98B $5.37B
Total debt $2.98B $295.00B $9.85B
Shares (diluted) 297.00M 1.14B 1.22B
Enterprise value $2.72B $96.35B $78.54B

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
MetricTACSOSU
P/E -66.6x 22.6x 7.1x
P/FCF 12.9x -32.6x 4.8x
P/Operating cash flow 7.6x 10.0x 6.0x
P/S 2.2x 3.5x -26.4x
P/B 2.8x 2.5x 2.0x
P/Tangible book 3.2x 2.5x 2.0x
EV/EBITDA 11.3x 13.1x 11.4x
EV/EBIT 31.3x 24.5x 58.2x
EV/Revenue 3.8x 5.9x -27.6x
EV/FCF 22.4x -54.8x 5.0x
EV/Operating cash flow 13.1x 16.8x 6.3x
PEG (3Y EPS CAGR) 2.10 0.71 0.19

Growth

14 metrics
MetricTACSOSU
Revenue growth (1Y) -8.8% 6.4% -108.8%
Revenue CAGR (3Y) -14.4% 3.0% -27.6%
Gross profit growth (1Y) -4.9% 5.3% –
Gross profit CAGR (3Y) -12.3% 1.6% –
Operating income growth (1Y) 44.6% 1.5% 18.0%
Operating income CAGR (3Y) -29.4% 14.7% –
Net income growth (1Y) 81.0% 8.7% 57.7%
Net income CAGR (3Y) -27.1% 16.2% 13.8%
EPS growth (1Y) 60.3% 5.6% 55.0%
EPS CAGR (3Y) -31.7% 31.9% 36.9%
Operating cash flow growth (1Y) 9.7% 15.5% 9.5%
Operating cash flow CAGR (3Y) -14.2% 23.7% 8.9%
Free cash flow growth (1Y) 38.4% -152.2% 5.0%
Free cash flow CAGR (3Y) -2.3% -3.1% 17.4%

Profitability

14 metrics
MetricTACSOSU
Gross margin 63.9% 83.3% –
EBITDA margin 34.0% 45.2% –
Operating margin 12.3% 24.2% –
Pretax margin 0.4% 17.4% –
Net margin -3.3% 15.4% –
FCF margin 17.2% -10.8% –
Operating cash flow margin 29.4% 35.3% -438.8%
Return on equity -1.5% 9.2% 29.1%
Return on assets -0.3% 2.9% 14.6%
Return on invested capital 0.0% 5.1% –
Return on capital employed – 5.1% 2.1%
Asset turnover 0.3x 0.2x 0.0x
Cash conversion (OCF / net income) -26.9x 2.3x 1.8x
Stock comp / revenue – – -3.5%

Financial Health

11 metrics
MetricTACSOSU
Debt / assets 47.9% 46.6% 10.4%
Debt / equity 2.3x 1.8x 0.2x
Net debt / EBITDA 4.8x 5.3x 0.5x
Debt / FCF 10.6x -23.1x 0.5x
Liabilities / assets 79.1% 73.9% 49.2%
Equity / assets 20.9% 26.1% 50.8%
Interest coverage 0.8x 2.3x –
Current ratio – 0.8x 1.7x
Quick ratio – 0.4x 1.0x
Cash ratio – 0.2x 0.5x
Altman Z-score – – –

Shareholder Returns

7 metrics
MetricTACSOSU
Dividend yield 2.3% 3.2% 3.0%
Net buyback yield -6.2% – -3.8%
Shareholder yield -4.0% 3.2% -0.8%
Payout ratio (earnings) -193.0% 66.6% 31.6%
Payout ratio (FCF) 12.3% -94.8% 14.3%
Dividend growth (1Y) -5.0% 4.7% -0.7%
Dividend CAGR (3Y) 3.6% 1.2% -1.4%

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.

ConsensusTACSOSU
Forward P/E 51.2xFY2026 19.1xFY2026 8.5xFY2026
EPS, next fiscal year $0.24FY2026 $4.84FY2026 $9.31FY2026
EPS growth, next FY +71.4%FY2026 +12.6%FY2026 +177.1%FY2026
EPS growth, the year after +54.2% -3.1% -18.8%
Revenue, next fiscal year $1.40BFY2026 $31.54BFY2026 $45.87BFY2026
Revenue growth, next FY -20.0%FY2026 +6.7%FY2026 +28.8%FY2026
Revenue growth, the year after +23.2% +8.8% -12.0%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersTACSOSU
Held by institutions – 72.5% 65.2%
Institutions holding – 2,363 752
Change in shares held, QoQ – +5.7% -5.1%
Institutions buying – 1,248 367
Institutions selling – 724 252
Buyers to sellers – 1.72 1.46

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.

TACSOSU
TAC 1.00 0.02 0.09
SO 0.02 1.00 0.11
SU 0.09 0.11 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, TAC, SO and SU?

Southern (SO) is the largest by market capitalisation: Transalta (TAC) $3.82B, Southern (SO) $105.29B, Suncor Energy (SU) $92.80B.

Which stock is cheaper, TAC, SO and SU?

Suncor Energy (SU) trades on the lowest price-to-earnings ratio (Transalta (TAC) -69.8x, Southern (SO) 22.6x, Suncor Energy (SU) 6.8x). On next year's consensus earnings, Suncor Energy (SU) is cheapest (Transalta (TAC) 51.2x, Southern (SO) 19.1x, Suncor Energy (SU) 8.5x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Southern (SO) grew revenue fastest over the trailing twelve months: Transalta (TAC) -8.8%, Southern (SO) +6.4%, Suncor Energy (SU) -108.8%.

Which company is more profitable?

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

Which stock has performed better?

Over the past year Suncor Energy (SU) returned the most: Transalta (TAC) -28.9%, Southern (SO) -3.5%, Suncor Energy (SU) +99.5%. Over five years, Suncor Energy (SU) compounded fastest (Transalta (TAC) +1.5%/yr, Southern (SO) +8.1%/yr, Suncor Energy (SU) +28.3%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Southern (SO) has the highest dividend yield: Transalta (TAC) 0.01%, Southern (SO) 0.03%, Suncor Energy (SU) -0.03%. Suncor Energy (SU) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Southern (SO) has been the steadiest (Transalta (TAC) 40.7%, Southern (SO) 17.9%, Suncor Energy (SU) 27.5%). Volatility measures how widely the price swings, not the risk of the business.

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

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.