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SGL Carbon SE

SGL.DE
33
Chemicals · Basic Materials
Exchange
Frankfurt Stock Exchange (XETRA)
Winston Score
33
Winston is serious
Below-average fundamentals — multiple weak pillars.
Data as of Aug 23, 2026 · filings through Jun 30, 2026
How the score breaks down
Quality
Mixed
Growth
Weak
Cash Flow
Weak
Stability
Good
Valuation
Data not available

Winston Score History

The full picture

SGL Carbon SE is a German company that makes products out of carbon and graphite — two materials known for being very strong, very light, and able to handle extreme heat. Its main products include carbon fiber, graphite electrodes, and specialty components used in industries like electric vehicles, semiconductors, solar panels, and steel production. The company supplies manufacturers across Europe, North America, and Asia.

SGL Carbon earns money by selling these materials and components directly to industrial customers, not consumers. It is headquartered in Wiesbaden, Germany, and operates production sites across multiple continents, giving it a global footprint despite its relatively small size. Its main competitive advantage is deep technical expertise in carbon-based materials, which are difficult to manufacture at high quality. The key growth driver is rising demand for carbon fiber in electric vehicle batteries and lightweight parts, but the company faces risk from cyclical downturns in steel and industrial markets, which can quickly reduce orders for its graphite products.

Growth Profile

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

Revenue Growth

-4.2% YoY

YoY Growth Rate

Revenue declining

EPS Growth

+123.0% YoY

YoY Growth Rate

EPS growth accelerating

Insider Activity

54.4%ownership

Flat

Insider ownership roughly steady over the past year

Cash Position

Cash flow positive

€275M cash & investments

Quarterly Free Cash Flow

↓ Burn rate worsening

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

Revenue declining

SGL Carbon SE's revenue is actually shrinking. In a growth stock, that removes the core investment thesis. The low Winston Score here may be warranted — unless there's a turnaround story.

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

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Quality

Profit per sale
Gross Margin
24.5%
Thin — 24.5% gross margin
Profit after running costs
Operating Margin
10.5%
Modest — 10.5% operating margin
Return on the money invested
ROCE
14.9%
Good — 14.9% return on capital

ROIC between 5% and 15%. They earn 5 to 15 cents back per year on every dollar invested.

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Growth

Sales growth
Sales YoY
-16.0%
Shrinking sales (-16.0% YoY)
Profit growth
EPS YoY
N/A
Data not available
How steady the profit is
EPS Consistency
3/8 quarters
Earnings rarely grow — volatile business

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Cash Flow

Profit that turns into cash
Cash Conversion
N/A
Data not available
Spare cash per sale
FCF Margin
6.3%
Modest free cash flow (6.3%)

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
0.49
Conservative — low debt load (0.49)
Covers its interest
Interest Cover
3.72x
Tight — interest eats into profit (3.7x)

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

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Valuation

Price vs profit
P/E Ratio (TTM)
N/M
no trend
Negative earnings — P/E not meaningful
Cheaper or dearer next year
P/E vs Forward
N/A
not available
Data not available

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Dividends

Not applicable for this business.
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