Samsung SDI Co.

0L2T.L

Hardware, Equipment & Parts · Technology

Price

75.60 GBp

+4.60 (+6.48%)

Market Cap

£23.36B

Exchange

London Stock Exchange

Winston Score

Winston is serious

Below-average fundamentals — multiple weak pillars.

Data as of Aug 12, 2026 · filings through Jun 30, 2026

Share count rising — dilution

+15.0% over 4y

The company has issued more shares over this period, which dilutes each existing shareholder’s stake.

Diluted shares outstanding: 273.8M (2021) → 314.8M (2025)

Samsung SDI makes rechargeable batteries and electronic materials. Its main products are lithium-ion battery cells used in electric vehicles, smartphones, laptops, and energy storage systems. The company is a subsidiary of South Korea's Samsung Group and is one of the largest battery manufacturers in the world.

Samsung SDI earns money by selling battery packs and cells to automakers like BMW, Stellantis, and Rivian, as well as to consumer electronics companies. It operates factories in South Korea, Hungary, China, and the United States, and generates tens of billions of dollars in annual revenue. The company's main competitive advantage is its long-standing relationships with major automakers and its advanced battery technology, but its current negative operating margin signals that high production costs and weak demand are squeezing profits. The key risk going forward is slower-than-expected electric vehicle adoption, which could keep battery prices low and factories underutilized for longer than the company can comfortably absorb.

Winston Score History

Growth Profile

For growth stock investors

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

Revenue Growth

+18.6% YoY

YoY Growth Rate

Steady revenue growth

EPS Growth

+295.3% YoY

YoY Growth Rate

EPS growth accelerating

R&D Spend

$887M/ year

↓ Declining (-100% vs prior year)

0.0% of revenue

Below sector average (15%)

R&D spend declining — could signal cost-cutting or efficiency

Insider Activity

80.3%ownership

→ Flat

Insider ownership roughly steady over the past year

Cash Runway

~8 years

$15.8T cash & investments

Quarterly Free Cash Flow

↓ Burn rate worsening

$15.8T cash & investments at current burn rate

Growth context

Samsung SDI Co. is growing revenue at 19% year-over-year. The Winston Score measures business quality today — these growth metrics show what could matter tomorrow.

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.

Each metric is explained in plain language so you know exactly what you're looking at. Start your free trial now.

Quality

Gross Margin

0.0%

Thin — 0.0% gross margin

Operating Margin

5.4%

Thin — 5.4% operating margin

ROCE

0.6%

Weak — 0.6% return on capital

ROIC between 0% and 5%. They earn a few cents back per dollar invested in the business.

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Growth

Sales YoY

+7.2%

Steady sales growth (+7.2% YoY)

EPS YoY

N/A

Data not available

EPS Consistency

2/8 quarters

Earnings rarely grow — volatile business

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Cash Flow

Cash Conversion

419%

Turns 419% of profit into real cash

FCF Margin

-13.9%

Burning cash (-13.9%)

Free cash flow is negative. They are burning cash, not generating it.

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Stability

Debt / Equity

0.52

Conservative — low debt load (0.52)

Interest Cover

N/A

Data not available

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Valuation

P/E Ratio (TTM)

0.0x

Attractive valuation — P/E 0.0

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

P/E vs Forward

N/A

not available

Data not available

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Dividends

Dividend Yield

0.29%

Small dividend — 0.29% yield

Modest yield. The bulk of any return needs to come from price appreciation.

Dividend Growth

-5.2%

Dividend cut (-5.2% YoY) — warning sign

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