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Corning

GLW
60
Hardware, Equipment & Parts · Technology
Also trades as: 0R2X.L · GLW.DE
Winston Score
60
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
Good
Growth
Strong
Cash Flow
Exceptional
Stability
Good
Valuation
Good
Dividends
Weak

Winston Score History

The full picture

Corning makes specialty glass and materials that go inside everyday products. Its most famous product is Gorilla Glass, the tough screen cover used on smartphones made by Apple, Samsung, and others. Corning also makes the glass fiber cables that carry internet data around the world, and special glass used in TV screens, cars, and scientific lab equipment.

Corning earns money by selling its materials and components to large manufacturers, not directly to consumers. It operates globally, with major customers and facilities across the United States, Asia, and Europe, and generates roughly $14 billion in annual revenue. The company's main advantage is its deep expertise in glass science, which is hard for competitors to copy quickly. The biggest growth driver right now is demand for fiber optic cable, as telecom companies and data center operators spend heavily to expand high-speed internet networks — though a slowdown in smartphone sales or capital spending by telecom companies remains a real risk to revenue.

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Growth Profile

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

Revenue Growth

+16.6% YoY

YoY Growth Rate

Steady revenue growth

EPS Growth

+18.2% YoY

YoY Growth Rate

Steady EPS growth

Insider Activity

8.4%ownership

Flat

Insider ownership roughly steady over the past year

Cash Position

Cash flow positive

$2.5B cash & investments

Quarterly Free Cash Flow

↑ Burn rate improving

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

Growth + cash flow

Corning is a rare growth stock that's already generating positive cash flow while growing at 17%. The Winston Score doesn't fully credit this transition from "burner" to "earner."

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
36.1%
Modest — 36.1% gross margin
Profit after running costs
Operating Margin
15.5%
Healthy — 15.5% operating margin
Return on the money invested
ROCE
12.5%
Good — 12.5% 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
+19.4%
Fast-growing sales (+19.4% YoY)
Profit growth
EPS YoY
+135.1%
Earnings growing fast (+135.1% YoY)

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

How steady the profit is
EPS Consistency
6/8 quarters
Earnings grew in most of the last 8 quarters

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Cash Flow

Profit that turns into cash
Cash Conversion
206%
Turns 206% of profit into real cash
Spare cash per sale
FCF Margin
14.1%
Converts sales into free cash efficiently (14.1%)

FCF margin between 10% and 20%. Every $100 in sales becomes $10 to $20 in real cash.

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Stability

What it owes vs what it owns
Debt / Equity
0.67
Moderate — manageable debt (0.67)
Covers its interest
Interest Cover
7.35x
Adequate interest coverage (7.4x)

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

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Valuation

Price vs profit
P/E Ratio (TTM)
67.8x
no trend
Expensive — P/E 67.8

P/E over 35. The market is pricing in heavy, sustained growth.

Cheaper or dearer next year
P/E vs Forward
+33.7
GROWING
Earnings expected to grow meaningfully — cheaper on forward P/E (67.8 → 34.1)

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Dividends

Dividend
Dividend Yield
0.76%
no trend
Small dividend — 0.76% yield

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

Dividend record
Dividend Growth
+0.0%
no trend
Dividend flat

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