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Constellium SE

CSTM
55
Aluminum · Basic Materials
Winston Score
55
Winston is curious
A decent business — some strong pillars, some weaker.
Data as of Aug 23, 2026 · filings through Jun 30, 2026
How the score breaks down
Quality
Mixed
Growth
Strong
Cash Flow
Good
Stability
Good
Valuation
Good

Winston Score History

The full picture

Constellium SE is a European company that turns raw aluminum into finished metal products used in cars, airplanes, and food and beverage packaging. Its main customers are automakers, aerospace companies like Airbus and Boeing, and packaging manufacturers. Constellium is one of the larger specialty aluminum rollers and extruders in the world, known for making high-strength aluminum parts that help reduce vehicle and aircraft weight.

The company earns revenue by selling aluminum products by volume, with prices tied partly to the underlying cost of aluminum metal plus a conversion fee for processing. Constellium operates plants across Europe and North America, generating roughly $8 billion in annual revenue. Its competitive edge comes from long-term contracts with major aerospace and automotive customers and technical expertise in specialized alloys that are hard to replicate quickly. The key growth driver is rising demand for lightweight aluminum in electric vehicles, while the main risk is exposure to volatile aluminum prices and a cyclical auto and aerospace market.

Growth Profile

When traditional metrics don't capture the full picture, these are the signals growth stock investors use instead.

Revenue Growth

+53.8% YoY

YoY Growth Rate

Revenue accelerating

EPS Growth

+311.5% YoY

YoY Growth Rate

Strong earnings growth

Insider Activity

8.9%ownership

Flat

Insider ownership roughly steady over the past year

Cash Position

Cash flow positive

$198M cash & investments

Quarterly Free Cash Flow

↑ Burn rate improving

Company generates more cash than it spends — no dilution risk from fundraising

Revenue accelerating

Constellium SE grew revenue 54% year-over-year and the growth rate is speeding up. That's the kind of momentum growth investors look for — the question is whether margins can follow.

The Winston Score above measures business quality today. Growth stocks often score lower because they invest in the future rather than maximising current profits. These metrics show what matters most for evaluating that future.

Score breakdown

Every number that matters to educated investors.

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Quality

Profit per sale
Gross Margin
12.7%
Thin — 12.7% gross margin
Profit after running costs
Operating Margin
4.0%
Thin — 4.0% operating margin
Return on the money invested
ROCE
20.2%
Exceptional — 20.2% return on capital

ROIC between 15% and 25%. Every dollar invested in the business earns 15 to 25 cents back per year.

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Growth

Sales growth
Sales YoY
+42.0%
Fast-growing sales (+42.0% YoY)
Profit growth
EPS YoY
>+1,000%
Earnings growing fast (>+1,000% YoY)

Earnings growing 25%+ a year. The compounder zone.

How steady the profit is
EPS Consistency
5/8 quarters
Mixed — about half the quarters showed growth

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Cash Flow

Profit that turns into cash
Cash Conversion
103%
Turns 103% of profit into real cash
Spare cash per sale
FCF Margin
2.3%
Thin free cash flow (2.3%)

FCF margin between 0% and 10%. Some cash from sales, but not a lot.

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Stability

What it owes vs what it owns
Debt / Equity
1.54
Elevated debt (1.54)
Covers its interest
Interest Cover
7.52x
Adequate interest coverage (7.5x)

Interest coverage between 3 and 8. Profits cover interest several times over.

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Valuation

Price vs profit
P/E Ratio (TTM)
6.6x
no trend
Attractive valuation — P/E 6.6

P/E under 10. The price tag is small relative to last year's profit.

Cheaper or dearer next year
P/E vs Forward
-3.4
SLOWING
Earnings expected to fall — forward P/E higher than today

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Dividends

Not applicable for this business.
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