AA vs CSTM vs RIO Stock Comparison

Alcoa, Constellium Se and Rio Tinto Prices as of Nov 3, 2026 Peers: Industry group
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AA Alcoa Corp
$39.52 -5.8% 1M +6.2% 1Y
Market cap
$10.66B
P/E
7.0x
Revenue (TTM)
$14.31B
Div. yield
0.01%
Aluminum Basic Materials
2 wins
CSTM Constellium Se
$23.04 -5.5% 1M +42.0% 1Y
Market cap
$3.05B
P/E
5.3x
Revenue (TTM)
$10.05B
Div. yield
–
Metal Fabrication Industrials
6 wins
RIO Rio Tinto Plc
$81.63 -13.4% 1M +16.0% 1Y
Market cap
$136.96B
P/E
–
Revenue (TTM)
—
Div. yield
–
Iron Ore Basic Materials
3 wins

Head to Head

11 decided of 12

Constellium Se leads on 6 of the 12 questions below (Constellium Se 6, Rio Tinto 3, Alcoa 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAACSTMRIOLeader
Larger companyMarket capitalisation $10.66B $3.05B $136.96B RIO
Cheaper on earningsLower P/E, profitable companies only 7.0x 5.3x — CSTM
Cheaper on forward earningsLower price / next fiscal year consensus EPS 6.1x 5.5x 10.4x CSTM
Faster revenue growthRevenue growth, trailing twelve months +11.2% +26.1% — CSTM
More profitableNet margin, trailing twelve months 10.7% 5.7% — AA
Better return on capitalReturn on invested capital 22.4% 26.9% — CSTM
Less leveragedLower net debt / EBITDA 0.1x 1.1x — AA
Higher dividend yieldTrailing dividend yield 0.01% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +6.2% +42.0% +16.0% CSTM
Better 5-year returnAnnualised price return, 5 years -3.1%/yr +3.7%/yr +6.1%/yr RIO
Less volatileAnnualised volatility, 1 year 53.4% 44.8% 30.9% RIO
Higher overall scoreMean of the five percentile scores vs peers 71/100 75/100 — CSTM

Percentile Scorecard

AACSTMRIO

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

AxisAACSTMRIO
Valuation 97 #6 of 168 98 #5 of 204 –
Growth 80 #32 of 152 100 #1 of 191 –
Profitability 69 #39 of 124 67 #63 of 189 –
Financial Health 29 #119 of 166 20 #177 of 221 26 #123 of 166
Shareholder Returns 79 #25 of 115 90 #17 of 158 98 #3 of 115
Overall 71 75 –
  • AA ranked among 177 companies in Metals and Mining
  • CSTM ranked among 223 companies in Machinery
  • RIO ranked among 177 companies in Metals and Mining

Price Performance

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

Returns

PeriodAACSTMRIOSPY
1 month -5.8%-5.5%-13.4% -2.0%
3 months -15.6%-22.4%-17.5% -2.2%
6 months -37.3%-30.1%-18.8% +4.2%
Year to date -25.6%+22.2%+2.0% +10.6%
1 year +6.2%+42.0%+16.0% +10.4%
3 years +49.0%+35.1%+23.1% +73.6%
3 years, per year +14.2%+10.6%+7.2% +20.2%
5 years -14.8%+19.9%+34.1% +61.6%
5 years, per year -3.1%+3.7%+6.1% +10.1%
10 years +63.6%+347.4%+136.2% +261.3%
10 years, per year +5.0%+16.2%+9.0% +13.7%

Risk

MeasureAACSTMRIOSPY
Volatility, 1Y 53.4%44.8%30.9% 12.8%
Downside volatility, 1Y 52.9%42.3%32.5% 12.8%
Beta vs S&P 500, 1Y 1.591.971.28 1.00
Return / volatility, 1Y 0.120.940.52 0.81
Max drawdown, 5Y -76.3%-66.3%-39.0% -25.4%
From 52-week high -52.8%-36.3%-27.1% -3.2%
52-week high $83.79$36.15$112.04 $779.14
52-week low $35.26$14.75$67.89 $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.

MultipleAACSTMRIO
P/E now vs peer median 6.8xmedian 12.4x 5.4xmedian 25.4x —median 12.4x
P/S now vs peer median 0.7xmedian 2.9x 0.3xmedian 1.9x —median 2.9x
EV/EBITDA now vs peer median 3.2xmedian 7.2x 3.1xmedian 14.5x —median 7.2x
P/FCF now vs peer median 11.7xmedian 14.8x 9.7xmedian 23.6x —median 14.8x
P/B now vs peer median 1.3xmedian 2.1x 2.3xmedian 2.2x 1.8xmedian 2.1x
PEG now vs peer median 0.15median 0.26 —median 1.21 —median 0.26

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 monthsAACSTMRIO
Revenue $14.31B $10.05B –
Gross profit $3.14B $1.61B –
Operating income $2.73B $1.20B –
Net income $1.51B $576.00M –
Free cash flow $890.00M $319.00M –
R&D $18.00M $53.00M –
EPS (diluted) $5.74 $4.13 –
Cash & equivalents $4.41B $158.00M $8.91B
Total debt $4.82B $1.82B $21.82B
Shares (diluted) 266.00M 138.99M 1.63B
Enterprise value $1.95B $2.46B $97.78B

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
MetricAACSTMRIO
P/E 6.8x 5.4x –
P/FCF 11.7x 9.7x –
P/Operating cash flow 6.5x 4.9x –
P/S 0.7x 0.3x –
P/B 1.3x 2.3x 1.8x
P/Tangible book 1.3x 2.5x 2.0x
EV/EBITDA 3.2x 3.1x –
EV/EBIT 4.0x 4.0x –
EV/Revenue 0.8x 0.5x –
EV/FCF 12.2x 14.9x –
EV/Operating cash flow 6.7x 7.5x –
PEG (3Y EPS CAGR) 0.15 – –

Growth

14 metrics
MetricAACSTMRIO
Revenue growth (1Y) 11.2% 26.1% –
Revenue CAGR (3Y) 10.5% – –
Gross profit growth (1Y) 32.5% 54.0% –
Gross profit CAGR (3Y) 70.3% – –
Operating income growth (1Y) 169.5% 82.1% –
Operating income CAGR (3Y) 144.7% – –
Net income growth (1Y) 34.9% 400.9% –
Net income CAGR (3Y) 52.7% – –
EPS growth (1Y) 30.8% 413.6% –
EPS CAGR (3Y) 46.5% – –
Operating cash flow growth (1Y) 51.4% 92.2% –
Operating cash flow CAGR (3Y) 426.9% – –
Free cash flow growth (1Y) 71.5% 897.5% –
Free cash flow CAGR (3Y) 55.6% – –

Profitability

14 metrics
MetricAACSTMRIO
Gross margin 21.9% 16.1% –
EBITDA margin 23.7% 15.3% –
Operating margin 19.0% 11.9% –
Pretax margin 11.3% 8.1% –
Net margin 10.7% 5.7% –
FCF margin 6.2% 3.2% –
Operating cash flow margin 11.2% 6.3% –
Return on equity 19.3% 44.4% –
Return on assets 8.1% 9.7% –
Return on invested capital 22.4% 26.9% –
Return on capital employed 18.6% 31.0% –
Asset turnover 0.8x 1.7x –
Cash conversion (OCF / net income) 1.1x 1.1x –
Stock comp / revenue 0.4% – –

Financial Health

11 metrics
MetricAACSTMRIO
Debt / assets 23.7% 31.0% 16.3%
Debt / equity 0.6x 1.4x 0.3x
Net debt / EBITDA 0.1x 1.1x –
Debt / FCF 5.4x 5.7x –
Liabilities / assets 59.5% 77.1% 46.3%
Equity / assets 40.5% 22.9% 53.7%
Interest coverage 21.1x 11.0x –
Current ratio 2.3x 1.5x 1.4x
Quick ratio 1.5x 0.6x 1.2x
Cash ratio 1.1x 0.1x 0.6x
Altman Z-score 2.03 3.20 –

Shareholder Returns

7 metrics
MetricAACSTMRIO
Dividend yield 1.3% – 5.7%
Net buyback yield – 3.8% –
Shareholder yield 1.3% 3.8% 5.7%
Payout ratio (earnings) 7.0% – –
Payout ratio (FCF) 11.9% – –
Dividend growth (1Y) 1.9% – –
Dividend CAGR (3Y) 14.3% – –

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.

ConsensusAACSTMRIO
Forward P/E 6.1xFY2026 5.5xFY2026 10.4xFY2026
EPS, next fiscal year $6.50FY2026 $4.18FY2026 $7.84FY2026
EPS growth, next FY +72.4%FY2026 +237.1%FY2026 +17.2%FY2026
EPS growth, the year after -11.4% -32.3% +9.1%
Revenue, next fiscal year $13.74BFY2026 $10.71BFY2026 $67.58BFY2026
Revenue growth, next FY +7.1%FY2026 +26.8%FY2026 +17.2%FY2026
Revenue growth, the year after +13.8% +1.3% -8.0%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAACSTMRIO
Held by institutions 77.8% 88.6% 7.9%
Institutions holding 711 387 969
Change in shares held, QoQ +2.9% -4.5% -1.1%
Institutions buying 357 255 504
Institutions selling 244 109 284
Buyers to sellers 1.46 2.34 1.77

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.

AACSTMRIO
AA 1.00 0.55 0.57
CSTM 0.55 1.00 0.54
RIO 0.57 0.54 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AA, CSTM and RIO?

Rio Tinto (RIO) is the largest by market capitalisation: Alcoa (AA) $10.66B, Constellium Se (CSTM) $3.05B, Rio Tinto (RIO) $136.96B.

Which stock is cheaper, AA, CSTM and RIO?

Constellium Se (CSTM) trades on the lowest price-to-earnings ratio (Alcoa (AA) 7.0x, Constellium Se (CSTM) 5.3x). On next year's consensus earnings, Constellium Se (CSTM) is cheapest (Alcoa (AA) 6.1x, Constellium Se (CSTM) 5.5x, Rio Tinto (RIO) 10.4x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Constellium Se (CSTM) grew revenue fastest over the trailing twelve months: Alcoa (AA) +11.2%, Constellium Se (CSTM) +26.1%.

Which company is more profitable?

Alcoa (AA) has the highest net margin (Alcoa (AA) 10.7%, Constellium Se (CSTM) 5.7%). On return on invested capital, Constellium Se (CSTM) leads (Alcoa (AA) 22.4%, Constellium Se (CSTM) 26.9%).

Which stock has performed better?

Over the past year Constellium Se (CSTM) returned the most: Alcoa (AA) +6.2%, Constellium Se (CSTM) +42.0%, Rio Tinto (RIO) +16.0%. Over five years, Rio Tinto (RIO) compounded fastest (Alcoa (AA) -3.1%/yr, Constellium Se (CSTM) +3.7%/yr, Rio Tinto (RIO) +6.1%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Alcoa (AA) 0.01%, Constellium Se (CSTM) 0.00%, Rio Tinto (RIO) 0.00%. Constellium Se (CSTM) and Rio Tinto (RIO) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Rio Tinto (RIO) has been the steadiest (Alcoa (AA) 53.4%, Constellium Se (CSTM) 44.8%, Rio Tinto (RIO) 30.9%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AA, CSTM and RIO?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Constellium Se (CSTM) 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.